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CN-121989492-A - Height-continuously adjustable pinch roller mechanism

CN121989492ACN 121989492 ACN121989492 ACN 121989492ACN-121989492-A

Abstract

The invention discloses a pinch roller mechanism with continuously adjustable height, which comprises a left bracket, a right bracket, an eccentric shaft, a support bearing, a pinch roller and a central locking bolt, wherein the eccentric shaft comprises a first cylinder, an eccentric column, a second cylinder and a rotary table, the axis of the eccentric column is parallel to the rotation axis of the eccentric shaft and is eccentrically arranged, the first cylinder and the second cylinder of the eccentric shaft are respectively arranged on the left bracket and the right bracket and are fixedly connected with the left bracket and the right bracket through the central locking bolt, the support bearing is sleeved on the outer side surface of the eccentric column, the pinch roller is sleeved on the outer side surface of the support bearing in an interference fit manner, a half-circle angle dial is arranged on the right bracket, and a pointer is arranged on the rotary table. The invention is characterized in that the pinch roller is sleeved on the outer side surface of the eccentric column, and the outer side surface of the eccentric column generates height change relative to the rotation axis by rotating the eccentric shaft by a certain angle, thereby realizing the height adjustment of the pinch roller, having simple structure and convenient operation, realizing the same height adjustment function with lower cost, higher adjustment efficiency and smaller equipment space occupation rate.

Inventors

  • HUANG DEJIE
  • Guo Taomei
  • WANG FENG
  • LIU ZHENFENG
  • WANG XICHEN
  • ZHANG CHI

Assignees

  • 宜春万申智能装备股份有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (10)

  1. 1. The pinch roller mechanism with the height being continuously adjustable is characterized by comprising a left bracket, a right bracket, an eccentric shaft, a support bearing, a pinch roller and a center locking bolt; the left support is detachably and fixedly connected with an outer support of the tablet press, the tablet press comprises a first vertical plate, the right support is detachably and fixedly connected with the left support, the tablet press comprises a second vertical plate, the second vertical plate is arranged on the right side of the first vertical plate in parallel, the eccentric shaft comprises a first cylinder, an eccentric column, a second cylinder and a rotary table, the first cylinder, the second cylinder and the rotary table are sequentially connected from left to right, the outer diameter of the eccentric column is sequentially increased, the first cylinder, the second cylinder and the rotary table are coaxial, the coaxial axis is a rotation axis of the eccentric shaft, the eccentric column axis is parallel to the rotation axis and is eccentrically arranged, the eccentric axis is arranged, the first cylinder and the second cylinder are respectively inserted on the first vertical plate and the second vertical plate, a step surface at the left end of the rotary table is attached to the right side surface of the second vertical plate, a central hole coaxial with the rotation axis is formed in the middle of the eccentric shaft, the central locking bolt penetrates through the central hole and is in threaded connection with the first vertical plate, the left support, the right support and the eccentric shaft are fixedly locked into an integral structure, the supporting bearing sleeve is arranged on the outer side surface of the eccentric column, rotatable connection is formed with the eccentric column, the supporting bearing sleeve is arranged on the outer side surface, and the supporting bearing sleeve is matched with the inner hole of the supporting bearing; The rear side of the right side surface of the second vertical plate is provided with a half-circle angle dial along the outer periphery of the rotary table, the half-circle angle dial takes the horizontal central line position as a reference, the anticlockwise direction is positive, the clockwise direction is negative, the angle of the half-circle angle dial is 0 to 90 degrees, the angle of the half-circle angle dial is accurate to 0.1 degrees, the periphery of the right end surface of the rotary table, which is close to the outer periphery, is provided with a pointer, and the pointer is arranged on an extension line of the rotating axis and the eccentric axis on the side of the eccentric axis, which is close to the axis, of the axis connecting line of the right end surface of the rotary table; when the height of the pressing wheel is adjusted, the position of the 0-degree scale mark of the pointer pointing to the half-circle angle dial is taken as the reference position of the height adjustment of the pressing wheel, the central locking bolt is loosened, the eccentric wheel is rotated anticlockwise, the height of the pressing wheel is reduced relative to the reference position, the eccentric wheel is rotated clockwise, and the height of the pressing wheel is increased relative to the reference position.
  2. 2. The continuously height-adjustable pinch roller mechanism according to claim 1, wherein the mounting surface of the left bracket and the outer bracket of the tablet press is used as a reference surface, the height from the axis line of the pinch roller to the reference surface is used as a pinch roller height value H, and when the height of the pinch roller is adjusted, the calculation formula of the change delta H of the height of the pinch roller is as follows: △H= -esinα(1) In the formula 1, delta H is the variation of the height of the pressing wheel, e is the eccentricity of the eccentric shaft axis relative to the rotating axis, alpha is the rotating angle of the eccentric shaft relative to the reference position, and the range is-90 degrees to 90 degrees; After the height adjustment, the calculation formula of the pinch roller height value H is as follows: H=H 0 +△H (2) Substituting the formula (1) into the formula (2) to obtain: H= H 0 -esinα(3) in the formula 2 and the formula 3, H 0 is the height value of the pinch roller when the pointer points to the 0-degree scale mark; The height value H of the pressing wheel which needs to be adjusted is determined according to the thickness of the pressing plate, and under the condition that H 0 and e are determined, the alpha angle value of the eccentric shaft which needs to be rotated can be calculated according to a formula (3), so that the height of the pressing wheel can be accurately adjusted through a half circle of dial.
  3. 3. The pinch roller mechanism with continuously adjustable height according to claim 2, wherein when the pointer is positioned at the 0 degree scale mark position, an inner semicircular arc groove and an outer semicircular arc groove which are coaxial with the rotation axis are respectively arranged on the upper side and the lower side of the right end surface of the turntable, and the outer radius R1 of the inner semicircular arc groove is less than or equal to the inner radius R2 of the outer semicircular arc groove; The utility model discloses a pinch roller, including second riser right flank upper portion and interior semicircle groove, the second riser right flank upper portion is equipped with 5 second internal thread holes that are circumference equipartition around the axis of rotation, and right flank lower part is equipped with 5 third internal thread holes that are circumference equipartition around the axis of rotation with outer semicircle groove corresponding position, the carousel upside passes interior semicircle groove and 3 second internal thread hole threaded connection locking through 3 adjusting bolt, and the downside passes outer semicircle groove and 3 third internal thread hole threaded connection locking through 3 adjusting bolt to can prevent the pinch roller during operation, the eccentric shaft produces the rotation, leads to the preforming thickness and produces the deviation.
  4. 4. The pressure roller mechanism with continuously adjustable height according to claim 3, wherein one of the 5 second internal threaded holes is arranged on the vertical central line, and 2 second internal threaded holes are respectively arranged on the left side and the right side based on the second internal threaded hole; One of the 5 third internal thread holes is arranged on the vertical central line, and 2 third internal thread holes are respectively arranged on the left side and the right side of the vertical central line by taking the third internal thread hole as a reference.
  5. 5. The pressure roller mechanism with continuously adjustable height according to claim 1, wherein the inner ring of the support bearing is in clearance fit with the outer circular surface of the eccentric cylinder, and the fit clearance is 0.002mm-0.015 mm; the pinch roller is sleeved on the outer side surface of the support bearing, the inner ring of the pinch roller is in interference fit with the outer circular surface of the support bearing, and the interference is 0.005-0.05 mm; the inner diameter of the circular guide groove is in clearance fit with the outer circular surface of the first cylinder, and the fit clearance is 0.002mm-0.015 mm; and clearance fit is formed between the inside of the circular through hole and the outer circular surface of the second cylinder, and the fit clearance is 0.01 mm-0.05 mm.
  6. 6. The pressure roller mechanism with continuously adjustable height according to claim 2, wherein the left bracket is an L-shaped plate composed of a first transverse plate and a first vertical plate, the first transverse plate is arranged above the first vertical plate and extends towards the right side, a circular guide groove sleeved with a first cylinder is arranged on the right side surface of the first vertical plate, and a first coaxial inner threaded hole is arranged on the bottom surface of the circular guide groove; The right bracket is an L-shaped plate composed of a second transverse plate and a second vertical plate, the second transverse plate is arranged above the second vertical plate, is arranged right below the first transverse plate and extends towards the right side, the second transverse plate is detachably and fixedly connected with the first transverse plate, and a circular through hole sleeved with a second cylinder is formed in the second vertical plate; the first cylinder and the second cylinder are respectively sleeved in the circular guide groove and the circular through hole.
  7. 7. The continuously height-adjustable pinch roller mechanism of claim 6, wherein the upper plane of the first transverse plate is provided with a T-shaped groove penetrating through the left side surface and the right side surface of the first transverse plate, the T-shaped groove is sleeved with a transverse beam of an outer bracket of the tablet press, the upper side surface of a square groove at the lower end of the T-shaped groove is a mounting surface of the left bracket and the outer bracket of the tablet press, and the mounting surface is a reference surface of the pinch roller height H.
  8. 8. The pinch roller mechanism with continuously adjustable height according to claim 6, wherein a spacer ring is sleeved on the outer side of the eccentric column on the left side and the right side of the supporting bearing, the width of the pinch roller is identical to that of the supporting bearing, H 1 is set as H 2 , the width of the spacer ring is set as H 3 ,H 3 ＜H 1 +2H 2 , H 1 +2H 2 -H 3 =0.1 mm-1.5mm, the width of the circular guide groove is set as H 4 , the width of the first cylinder is set as H 5 ,H 4 ＞H 5 , H 4 -H 5 =0.1 mm-1.5mm, clearance fit is set between the circular guide groove and the first cylinder, and the fit clearance is set as 0.002-0.015 mm.
  9. 9. The continuously height adjustable pinch roller mechanism of claim 6, wherein an elastic washer is disposed between the upper plane of the second cross plate and the lower plane of the first cross plate; The right bracket is locked on the first transverse plate of the left bracket by threaded connection of the 4 mounting bolts respectively passing through the two rectangular holes on the second transverse plate and the elastic gasket and the 4 fourth internal threaded holes.
  10. 10. The method of assembling a continuously height adjustable puck mechanism of claim 9, comprising the steps of: S1, firstly, a second cylinder of an eccentric shaft is arranged in a circular through hole of a right bracket, a pointer points to a 0-degree position on a half circle dial, the position is designated as an initial position, a pinch roller height value H 0 of the initial position is determined, then, a pinch roller height value H required to be adjusted is determined according to the thickness of a required pressed sheet, an angle alpha required to rotate the eccentric shaft relative to the 0-degree position is calculated according to a formula 3, the eccentric shaft is rotated according to the calculated alpha, after the angle is adjusted, 3 adjusting bolts penetrate through an inner semicircular arc groove to be in threaded locking connection with corresponding second internal threaded holes, 3 adjusting bolts penetrate through an outer semicircular arc groove to be in threaded locking connection with corresponding third internal threaded holes, and the right bracket and the eccentric shaft are assembled into an integral assembly A; s2, press-fitting the pinch roller and the support bearing in place in an interference fit manner to form an integral assembly B; s3, penetrating a space ring, the integral assembly B obtained in the step 2 and the space ring into an eccentric column of an eccentric shaft on the integral assembly A obtained in the step 1 in a clearance fit manner in sequence, so as to form a new integral assembly C; S4, loading the integral assembly C obtained in the step 3 into a left bracket, enabling a first cylinder at the left end of an eccentric shaft of the integral assembly C to be inserted into a circular guide groove of the left bracket, enabling a first transverse plate to be parallel to a second transverse plate, enabling a first vertical plate to be parallel to the second vertical plate, enabling a central locking bolt to penetrate through a central hole of the eccentric shaft, enabling an end head to be in threaded connection with a first internal threaded hole, and enabling a pressing wheel to be locked and fixed with a support bearing; S5, finally, inserting an elastic washer between the first transverse plate and the first transverse plate, dividing the 4 mounting bolts into two groups, respectively penetrating through the second transverse plate and the two square holes on the elastic washer, respectively locking and connecting the end parts with the 4 fourth internal threaded holes in a threaded manner, locking and fixing the left bracket and the right bracket, and completing the assembly of the pinch roller mechanism; And S6, in the working process, if the height of the pinch roller is required to be adjusted, only the central locking bolt and the 6 adjusting bolts are required to be loosened, the rotation angle of the eccentric shaft is calculated according to the formula 3, the eccentric shaft is rotated according to the calculated angle, and then the central locking bolt and the 6 adjusting bolts are required to be re-screwed.

Description

Height-continuously adjustable pinch roller mechanism Technical Field The invention relates to the technical field of tablet presses, in particular to a height-continuously-adjustable pinch roller mechanism applied to a tablet press. Background The pressing wheel mechanism is a sheet type actuating mechanism which is applied to powder pressing in the fields of medicines, foods, chemical industry and the like and has certain compactness, hardness and thickness, and in the process of pressing the powder, different sheet types have different requirements on the compactness, hardness and thickness of the formed sheet, so that the pressing wheel mechanism is required to have the height position adjusting function of the pressing wheel for producing different sheet types of the same type of tablet press so as to ensure that the pressing wheel mechanism can adapt to the production requirements of diversified products. At present, two traditional methods for adjusting the height position of the pressing wheel are as follows: (1) The adjusting mode is relatively complex in mechanism, the adjusting mode aims at adjusting the upper and lower pair of pressing wheels to penetrate into the ceiling or the base of the equipment to be adjusted, the operation is relatively time-consuming, and meanwhile, the cost of the adjusting mechanism is relatively high. (2) The motor is adopted to add the screw rod, the automatic driving mode of the initial position is determined by combining the displacement sensor to adjust, the operation is simpler, the automatic operation can be realized, but the screw rod and the motor are introduced, the cost is higher, and the overall space size of the equipment is larger. The novel height-continuously-adjustable pinch roller mechanism is designed and innovated around the defect of adjusting the height position of the pinch roller, so that the pinch roller height position can be adjusted simply and conveniently, the same function can be achieved at lower cost, the adjusting efficiency is higher, and the space occupation rate of equipment is smaller. Disclosure of Invention In order to solve the defect of adjustment of the height position of the existing pinch roller, the invention provides a pinch roller mechanism with continuously adjustable height, which is characterized in that an eccentric shaft is arranged, the pinch roller is sleeved on the outer side surface of an eccentric column eccentric with the rotation axis of the eccentric shaft, and then the outer side surface of the eccentric column is subjected to height change relative to the rotation axis by rotating the eccentric shaft by a certain angle, so that the height change adjustment of the pinch roller is realized, the structure is simple, the operation is convenient, the same height adjustment function is realized with lower cost, higher adjustment efficiency and smaller equipment space occupation rate are realized. The invention provides a pinch roller mechanism with continuously adjustable height, which comprises a left bracket, a right bracket, an eccentric shaft, a supporting bearing, a pinch roller and a central locking bolt, wherein the left bracket is detachably and fixedly connected with an outer bracket of a tablet press and comprises a first vertical plate, the right bracket is detachably and fixedly connected with the left bracket and comprises a second vertical plate, the second vertical plate is arranged on the right side of the first vertical plate in parallel, the eccentric shaft comprises a first cylinder, an eccentric cylinder, a second cylinder and a turntable which are sequentially connected from left to right and sequentially increase in outer diameter, the first cylinder, the second cylinder and the turntable are coaxial, the coaxial axis is a rotation axis of the eccentric shaft, the eccentric cylinder axis is parallel to the rotation axis and is arranged as an eccentric axis, the first cylinder and the second cylinder are respectively inserted on the first vertical plate and the second vertical plate, the step surface of the left end of the turntable is attached to the right side surface of the second vertical plate, the eccentric shaft is provided with a central hole coaxial with the rotation axis, the central locking bolt passes through the central hole to be in threaded connection with the first vertical plate, the left bracket, the eccentric shaft and the supporting bearing are in an interference fit with the outer hole, and the outer bearing is formed on the outer side surface of the supporting bearing in an interference fit manner, and the eccentric shaft is connected with the outer side surface of the pinch roller; The rear side of the right side surface of the second vertical plate is provided with a half-circle angle dial along the outer periphery of the rotary table, the half-circle angle dial takes the horizontal central line position as a reference, the anticlockwise direction is positive, the clock