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CN-122008419-A - Moving balance weight reducing device of slicer

CN122008419ACN 122008419 ACN122008419 ACN 122008419ACN-122008419-A

Abstract

The invention provides a movable balance weight reducing device of a slicing machine, which comprises a stand column, wherein a boss is arranged in the middle of the front end surface of the stand column, a first stepped hole is formed in the boss, a speed reducer is arranged on the boss, the output end of the speed reducer downwards passes through the first stepped hole, the output end of the speed reducer is connected with a screw rod through a coupler, the screw rod is connected with a working frame through a screw rod nut, the bottom of the working frame is connected with a clamp unit, mounting supports are respectively arranged on two sides of the working frame, air cylinders are respectively arranged on two sides of the screw rod, the two air cylinders are respectively arranged on the stand column, the piston ends of the air cylinders are downwards arranged, and the piston ends of the air cylinders are respectively connected with the mounting supports through fish-eye joints. The invention adopts the structure that the screw rod vertically moves for feeding and the two sides are provided with the air cylinders for balancing and reducing the weight, improves the axial rigidity of the whole transmission, improves the positioning precision of the screw rod under the whole stroke and long-time working, prolongs the service life, improves the safety performance, and reduces the energy consumption while optimizing the cost.

Inventors

  • FENG BO
  • ZHENG JIAKUN

Assignees

  • 上海汉虹精密机械有限公司

Dates

Publication Date
20260512
Application Date
20260312

Claims (10)

  1. 1. A movable balance weight reducing device of a slicing machine comprises a stand column (1) and is characterized in that a boss is arranged in the middle of the front end face of the stand column (1), a first stepped hole is formed in the boss, a speed reducer (5) is arranged on the boss, the output end of the speed reducer (5) downwards penetrates through the first stepped hole, the output end of the speed reducer (5) is connected with a lead screw (10) through a coupler (8), the lead screw (10) is connected with a working frame (17) through a lead screw nut (11), the bottom of the working frame (17) is connected with a clamp unit (23), mounting supports (21) are respectively arranged on two sides of the working frame (17), air cylinders (18) are respectively arranged on two sides of the lead screw (10), piston ends of the air cylinders (18) are downwards arranged on the stand column (1), piston ends of the air cylinders (18) are respectively connected with a mounting support (21) through fish eye joints (19), two groups of limiting supports (14) which are arranged along the vertical direction interval, the two groups of limiting supports (14) are respectively located on any two sides of the working frame (17), and anti-collision protection blocks (15) are arranged on any one limiting support (14).
  2. 2. The movable balance weight-reducing device of the slicing machine according to claim 1, wherein guide rails (12) are further arranged on the upright post (1) at intervals along the vertical direction, the two guide rails (12) are respectively positioned between the screw rod (10) and air cylinders (18) on two sides, sliding blocks (13) are arranged on the guide rails (12) at intervals, and all the sliding blocks (13) are connected with the working frame (17).
  3. 3. The movable balance weight-reducing device of the slicing machine according to claim 1, wherein the two sides of the working frame (17) are respectively provided with a movable block (16), two anti-collision blocks (15) on the same vertical line are mutually close, and the movable range of the movable block (16) on any side is between the two anti-collision blocks (15) on the corresponding side.
  4. 4. A movable balance weight-reducing device of a slicer according to claim 3, wherein the movable block (16) is a transverse T-shaped block, the flange of the T-shaped block is connected with the working frame (17), and the web end of the T-shaped block can be contacted with the anti-collision block (15).
  5. 5. The movable balance weight-reducing device of the slicer is characterized in that the mounting support (21) is of a U-shaped lug structure, the fish eye joint (19) is arranged in an opening of the U-shaped lug structure, a first through hole is formed in the lug of the U-shaped lug structure, a pin shaft (20) is arranged in the first through hole, the pin shaft (20) penetrates through the fish eye joint (19), a clamping groove is formed in the outer ring of one end, exposed out of the mounting support (21), of the pin shaft (20), a clamping plate (22) is arranged in the clamping groove, and the clamping plate (22) is connected with a screw hole of the mounting support (21) through a bolt.
  6. 6. The movable balance weight-reducing device of the slicer is characterized in that a base plate (2) and a mounting plate (3) are sequentially arranged on the top surface of the upright post (1) upwards, and the fixed end of the air cylinder (18) is in contact with the bottom surface of the mounting plate (3).
  7. 7. The movable balance weight-reducing device of the slicer is characterized in that the input end of the speed reducer (5) is connected with an output shaft of the motor (4), an outer ring of the output end of the speed reducer (5) is provided with an upper connecting sleeve (6), the upper connecting sleeve (6) is a first stepped shaft sleeve, a small end of the first stepped shaft sleeve is arranged below, a small end outer ring of the first stepped shaft sleeve is provided with a first external thread section, the first external thread section is connected with a lower connecting sleeve (7), a second stepped hole is arranged in the first stepped shaft sleeve, the large end of the second stepped hole is arranged above, the large end of the second stepped hole is provided with a second screw hole, and the second screw hole is connected with a third external thread section of an outer ring of the coupler (8).
  8. 8. The movable balance weight reducing device of the slicer is characterized in that the large end of the first stepped hole is arranged above, a first screw hole is formed in the large end of the first stepped hole, the lower connecting sleeve (7) is a second stepped shaft sleeve, the small end of the second stepped shaft sleeve is arranged below, a second external thread section is arranged on the outer ring of the small end of the second stepped shaft sleeve and connected with the first screw hole, a third stepped hole is formed in the second stepped shaft sleeve, the large end of the third stepped hole is arranged above, a third screw hole is formed in the large end of the third stepped hole, and the third screw hole is connected with the first external thread section.
  9. 9. The movable balance weight-reducing device of the slicer is characterized in that a plurality of fourth screw holes which are uniformly distributed around the circumference are formed in the step surface of the third stepped hole, a screw rod supporting seat (9) is arranged at one end, close to the coupler (8), of a screw rod (10), and the screw rod supporting seat (9) is arranged in the third stepped hole of the lower connecting sleeve (7).
  10. 10. The movable balance weight-reducing device of the slicing machine is characterized in that the screw rod supporting seat (9) is of a flange structure, a fifth screw hole is formed in the center of the flange structure and connected with the screw rod (10), a plurality of fourth stepped holes uniformly distributed around the circumference are formed in the outer ring of the fifth screw hole, the fourth stepped holes are arranged in one-to-one correspondence with the fourth screw holes, and bolts are arranged in the fourth stepped holes and connected with the fourth screw holes.

Description

Moving balance weight reducing device of slicer Technical Field The invention relates to the technical fields of machinery, photovoltaics and semiconductors, in particular to a movable balance weight reducing device of a slicing machine. Background In the field of microtomes (particularly large, high-load industrial microtomes, such as ceramic and metal microtomes), the following technical defects exist by adopting a simple design of leading screw feeding movement and directly bearing a workbench: 1) In terms of rigidity, the lead screw needs to be made long in order to obtain a large stroke. The elongated lead screw is susceptible to buckling when subjected to axial compressive forces when mounted vertically. Not only aggravate the wearing and tearing, can also cause vibration and seizing; 2) In the aspect of precision, when a screw rod is driven to carry a heavy object to carry out bidirectional feeding, a back clearance can cause inaccurate positioning of a workbench, and in long-time continuous working, the screw rod generates a lot of heat due to friction, so that the positioning error of the workbench is caused, the size of a slice can be deviated, the consistency of the slice thickness is affected, and the control precision is reduced; 3) Life-time, the slicing process can create impact loads, particularly when cutting into, out of, or encountering internal non-uniformities in the material. Under the working condition of heavy load and even vibration impact, sudden faults such as ball fracture, screw bending and the like are easy to occur. The wear is fast, and the service life is short; 4) In the aspect of reliability, for a vertically installed slicer, the screw rod has no self-locking capability and can fall out of control under the condition of power failure or failure; 5) In the aspects of cost and energy conservation, the requirements on the specification of the screw rod are larger due to large load, and the cost, the power and the energy consumption are high. Therefore, how to design a movable balance weight-reducing device of a slicing machine becomes a problem to be solved urgently. Disclosure of Invention Aiming at the problems existing in the prior art, the invention provides a movable balance weight-reducing device of a slicing machine, which aims to solve at least one technical problem. The technical scheme is that the movable balance weight reducing device of the slicer comprises a stand column, a boss is arranged in the middle of the front end face of the stand column, a first stepped hole is formed in the boss, a speed reducer is arranged on the boss, the output end of the speed reducer penetrates through the first stepped hole downwards, the output end of the speed reducer is connected with a lead screw through a coupler, the lead screw is connected with a working frame through a lead screw nut, the bottom of the working frame is connected with a clamp unit, mounting supports are respectively arranged on two sides of the working frame, air cylinders are respectively arranged on two sides of the lead screw, the two air cylinders are respectively arranged on the stand column, the piston ends of the air cylinders are downwards arranged, the piston ends of the air cylinders are respectively connected with the mounting supports through fish eye joints, two groups of limiting supports are arranged on the stand column at intervals along the vertical direction, the two groups of limiting supports are respectively positioned on two sides of the working frame, and an anti-collision block is arranged on any one limiting support. The invention adopts a structure that a screw rod vertically moves to feed and is provided with air cylinders at two sides for balancing and weight reducing, the screw rod is focused on providing accurate and controllable linear feeding motion and is responsible for positioning precision, the air cylinders are focused on carrying most of vertical weight of a working frame (a working table) for weight reducing and balancing, the bearing of the screw rod is reduced, the bending of the screw rod is not caused by pressure, the axial rigidity of the whole transmission is improved, the positioning precision of the screw rod under the whole stroke and long-time working is improved due to the fact that thermal load and elastic deformation are greatly reduced, most of vertical load is balanced by the air cylinders, cutting force, friction force and the like to be overcome by the screw rod are reduced, at the moment of cutting, the impact load is firstly absorbed by a buffer of an air pressure system and then is transmitted to the screw rod and a motor, precise transmission parts are protected, the screw rod is converted from a heavy-pressure state to a light-load state, risks such as abrasion, heating and elastic deformation are reduced to the minimum, the service life is prolonged, the air cylinders at two sides can still provide a certain supporting force to prevent the worki