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CN-121988640-A - Cutting die mechanism

CN121988640ACN 121988640 ACN121988640 ACN 121988640ACN-121988640-A

Abstract

The invention discloses a cutting die mechanism, which relates to the technical field of plate processing equipment and comprises a fixed plate, a plurality of cutter heads, a clamping assembly and a detection assembly. The clamping assembly comprises a mounting seat, a driving unit, a sleeve, a push block and a tightening rod, wherein the driving unit drives the sleeve to rotate, and the push block and the tightening rod axially move through a screw rod thread pair, so that the tightening rod is inserted into or withdrawn from a clamping groove of the tool bit, and the tool bit is automatically locked and quickly disassembled. The detection assembly comprises a movable plate with an inclined plane, a stud, a spring and a pressure sensor, and is used for monitoring the working state of the cutter head in real time, judging whether the cutter head is loose or inclined through pressure signal change, and realizing fault on-line diagnosis and positioning. The invention has the advantages of reliable clamping, convenient disassembly and replacement, monitoring state and positioning fault, and is suitable for high-precision sectional bending processing of long-size plates.

Inventors

  • CHEN HOUYUN

Assignees

  • 苏州数恒精工科技有限公司

Dates

Publication Date
20260508
Application Date
20260312

Claims (10)

  1. 1. The cutting die mechanism comprises a fixed plate (10), a plurality of cutting heads (21) are mounted on the fixed plate (10), and is characterized by further comprising a clamping assembly, wherein the clamping assembly comprises a mounting seat (20), a driving unit, a sleeve (34), a pushing block (37) and a tight supporting rod (38), the mounting seat (20) is fixed on the fixed plate (10), a movable cavity (36) and a cutting groove (23) communicated with the movable cavity (36) are formed in the mounting seat, the cutting heads (21) are inserted into the cutting groove (23), clamping grooves (22) are formed in the side surfaces of the cutting heads, the output end of the driving unit is in driving connection with the sleeve (34), the sleeve (34) is rotatably arranged in the movable cavity (36), the pushing block (37) is connected with the inner wall of the sleeve (34) through a screw thread pair, the tight supporting rod (38) is fixed on the pushing block (37), the driving unit drives the sleeve (34) to rotate, and the pushing block (37) and the clamping rod (38) are driven to extend out of the sleeve (34) along the axial direction of the clamping groove (38).
  2. 2. The cutting die mechanism according to claim 1, wherein the driving unit comprises a motor (31), a speed reducer (33) and a driving shaft (32), the output end of the motor (31) is connected with the driving shaft (32) through the speed reducer (33), and the driving shaft (32) is fixedly connected with the sleeve (34).
  3. 3. A die mechanism as claimed in claim 1, wherein one end of the sleeve (34) is rotatably supported within the movable cavity (36) by means of a bearing (35).
  4. 4. A cutting die mechanism according to claims 1-3, characterized in that a single cutting head (21) is provided with a corresponding plurality of sets of clamping assemblies.
  5. 5. The cutting die mechanism according to claim 1, further comprising a detection assembly, wherein the detection assembly comprises a movable plate (41), at least two studs (44), a spring (45) and a pressure sensor (51), the movable plate (41) is movably connected to the end portion of the cutter head (21) through the studs (44), the spring (45) is sleeved on the studs (44) and is abutted between the movable plate (41) and the cutter head (21), and the pressure sensor (51) is arranged on the cutter head (21), and the detection end of the pressure sensor is in contact with a pressure sensing plate (52) fixedly connected with the studs (44).
  6. 6. The cutting die mechanism as recited in claim 5, wherein the movable plate (41) includes a plate body (43), and a slope (42) contacting the workpiece is provided on the plate body (43).
  7. 7. A die mechanism as claimed in claim 6, wherein the extension of the plate (43) in the working direction of the tool bit (21) is to the effective working portion of the tool bit (21).
  8. 8. The cutting die mechanism as recited in claim 5, wherein the pressure sensor (51) is an elastic pressure sensor (51) having a detection end held in abutment with the pressure sensing plate (52) by its own elastic member.
  9. 9. The cutting die mechanism as recited in claim 5, wherein the number of pressure sensors (51) is consistent with the number of studs (44) and is arranged in a one-to-one correspondence.
  10. 10. A cutting die mechanism according to claim 1, wherein the fixing plate (10) has a strip-shaped structure, and a plurality of the cutter heads (21) and the corresponding clamping assemblies are sequentially arranged along the length direction of the fixing plate (10).

Description

Cutting die mechanism Technical Field The application relates to the technical field of plate processing equipment, in particular to a cutting die mechanism. Background In the field of bending processing of plates, particularly when bending is performed on plates with large length, a segmented cutting die mechanism is generally adopted. In the prior art, it is common practice to install a plurality of independent tool bits on a longer fixed plate to jointly complete the bending formation of large-size plates. However, the multi-bit segmented structure has the following main technical drawbacks in practical application: 1. The fixing reliability of the tool bit is poor, looseness is easy to occur, and the tool bit continuously bears huge and unbalanced impact load from the plate in the bending process, so that the tool bit is difficult to keep stable for a long time in the traditional fixing mode such as direct compression of a bolt. The single or multiple tool bits are very prone to slight axial or radial loosening caused by impact, resulting in a detrimental gap between the tool bit and the mounting base. The bending precision is directly affected, the bending angle of the workpiece is inconsistent or the rebound quantity is increased, the abrasion and even the breakage of the cutter head are aggravated due to abnormal collision caused by looseness, and the service life is shortened. 2. The tool bit is complicated to replace and operate, and the maintenance efficiency is low, so that the existing design is often focused on static fastening, and the convenience of maintenance is ignored. When a certain tool bit needs to be replaced due to abrasion or damage, the disassembly process is complex, and a special tool is usually required and a large amount of labor is consumed. In the case of numerous bits, this inefficient manner of replacement reduces the overall usability and production continuity of the device, increasing maintenance costs. 3. In a multi-cutter-head cooperative working environment, once the machining quality problem caused by loosening or damage occurs, the prior art lacks an effective on-line detection and diagnosis mechanism. It is difficult for an operator to quickly and accurately determine which bit or bits are abnormal, and it is often only possible to check or stop one by experience for a complete inspection. This delays the time for fault repair and also makes preventive maintenance lacking data support, and the reliability of operation of the device difficult to guarantee. Therefore, a high-precision cutting die mechanism which not only can realize high-reliability clamping, but also is convenient to detach and replace quickly, and simultaneously has on-line state monitoring and fault positioning functions is needed in the prior art so as to solve the technical problems in the bending processing of long plates. Disclosure of Invention The cutting die mechanism comprises a fixed plate, a clamping assembly, a driving unit, a sleeve, a pushing block and a tightening rod, wherein the clamping assembly comprises an installation seat, a driving unit, a sleeve, the pushing block and the tightening rod, the installation seat is fixed on the fixed plate, a movable cavity and a cutting groove communicated with the movable cavity are formed in the installation seat, the cutting head is inserted into the cutting groove, a clamping groove is formed in the side face of the cutting head, the output end of the driving unit is in driving connection with the sleeve, the sleeve is rotatably arranged in the movable cavity, the pushing block is connected with the inner wall of the sleeve through a screw rod thread pair, the tightening rod is fixed on the pushing block, the driving unit drives the sleeve to rotate, and drives the pushing block and the tightening rod to axially move along the sleeve, so that the tightening rod stretches into or withdraws from the clamping groove of the cutting head. Compared with the prior art, the technical scheme is adopted, the sleeve is driven to rotate by the driving unit, and the rotary motion is converted into the linear motion of the push block and the abutting rod through the screw rod thread pair between the sleeve and the push block, so that the abutting rod can automatically plug and lock the cutter head clamping groove. The structure realizes the rapid and reliable clamping and disassembly of the cutter head, and meanwhile, impact load in the working process is converted into the rotation moment of the sleeve through the screw thread pair and is absorbed by the bearing system, so that the driving unit is effectively protected, and the overall rigidity and durability of the system are improved. The driving unit comprises a motor, a speed reducer and a driving shaft, wherein the output end of the motor is connected with the driving shaft through the speed reducer, and the driving shaft is fixedly connected with the sleeve. Compared with the prior art, the automa