CN213562145U

CN213562145U - Flat pressing mechanism

Info

Publication number: CN213562145U
Application number: CN202022343892.9U
Authority: CN
Inventors: 袁荡
Original assignee: Shanghai Chufeng Electromechanical Co ltd
Current assignee: Shanghai Chufeng Electromechanical Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-29
Anticipated expiration: 2030-10-20

Abstract

The application discloses flat pressing mechanism belongs to fixing device technical field, including telescoping device, aggregate unit, guider and closing device. The linkage device comprises a plurality of pull rods which are vertically distributed along the circumferential direction of the workpiece at intervals. The guiding device comprises a plurality of guiding seats fixed on the processing platform. A telescopic cavity matched with the pull rod and a guide cavity horizontally communicated with the telescopic cavity are arranged in the guide seat. The pressing device comprises a pressing block arranged in the guide cavity. The pressing block is connected with the pull rod through a transmission device. The telescopic motion of the telescopic device drives the pull rod to ascend or descend in a vertical synchronous mode, the pull rod converts vertical movement into horizontal movement of the pressing block in the guide cavity through the transmission device, and therefore workpieces are synchronously pressed in the horizontal direction, and the clamping effect is good. The flat pressing mechanism is compact in overall structure, very simple in structure and control and easy to operate.

Description

Flat pressing mechanism

Technical Field

The utility model relates to a fixing device technical field especially relates to a flat pressing mechanism.

Background

In the field of mechanical manufacturing, many components have different shapes that are difficult to secure effectively during machining. Significant time and labor costs are typically wasted.

Currently, there are also clamping devices that compress the workpiece in different directions. However, due to the sequential stress, the workpiece is often moved to its original position, which easily affects the processing precision of the workpiece, and even causes the deformation of the workpiece during the moving process. In addition, the number of the used hydraulic components is large, so that the manufacturing cost is high, and the later maintenance is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flat pressing mechanism drives the aggregate unit through the telescoping device and stretches out and draws back, makes the pull rod drive the compact heap in the guide holder and compress tightly the work piece in equidirectional synchronization, can effectively fix the work piece.

In order to realize the utility model discloses above at least one purpose, the utility model provides a flat pressing mechanism for the level compresses tightly the work piece, wherein flat pressing mechanism includes:

a telescoping device;

the linkage device comprises at least three pull rods which are vertically distributed along the circumferential direction of the workpiece at intervals, and one end of each of the at least three pull rods is fixedly connected with the telescopic device so as to synchronously stretch under the power action of the telescopic device;

the guide device comprises at least three guide seats fixed on a processing platform, the guide seats are matched with the pull rod and are provided with a telescopic cavity for the other end of the pull rod to stretch and a guide cavity horizontally communicated with the telescopic cavity, and the guide cavities are positioned on the same horizontal plane and are opposite to the circumferential virtual center line; and

the pressing device comprises pressing blocks and a transmission device, the pressing blocks are respectively arranged in the guide cavities and are matched with the corresponding pull rods through the transmission device, so that the pressing blocks are driven by the pull rods to synchronously approach to the workpiece or synchronously leave from the workpiece, and the workpiece is pressed or loosened.

The utility model relates to a flat pressing mechanism provides power through the telescoping device and drives the synchronous flexible of at least three pull rod among the aggregate unit. Under the limiting effect of the guide device and the transmission effect of the transmission device, the vertical movement of the pull rod is converted into the horizontal movement of the pressing block, so that the workpiece is synchronously pressed or loosened. Because the workpiece is fixed in a circumferential synchronous mode, the problem that stress is sequential in the prior art is well solved, the workpiece is clamped more stably, and the workpiece cannot move in the process of being pressed. The flat pressing mechanism is compact in overall structure, simple in structure and control, easy to operate and wider in application range.

Furthermore, the telescopic device is an oil cylinder.

Furthermore, the linkage device further comprises a linkage pulling plate, the linkage pulling plate is vertically fixed on a telescopic rod of the telescopic device, and at least three pulling rods are vertically fixed on the linkage pulling plate along the circumferential direction, so that the pulling rods are synchronously driven by the telescopic device to perform telescopic motion under the action of the linkage pulling plate.

Furthermore, the guiding device further comprises a bushing sleeved on the pull rod, the bushing is fixedly connected to one end, close to the telescopic device, of the guide seat so as to provide a guiding effect for the pull rod, reduce abrasion of the pull rod and prolong the service life of the pull rod.

Furthermore, the transmission device comprises a fulcrum pin fixedly arranged on the pressing block, the pull rod is obliquely provided with a waist-shaped hole matched with the fulcrum pin along the length direction, and when the pull rod performs telescopic motion, the fulcrum pin is limited by the waist-shaped hole, so that the fulcrum pin drives the pressing block to horizontally move in the horizontal direction of the guide cavity.

Furthermore, one end of the waist-shaped hole, which is far away from the telescopic device, inclines towards the direction close to the virtual center line relative to the other end of the waist-shaped hole.

Furthermore, an elastic device is arranged in the guide cavity and is arranged at one end of the pressing block, which is far away from the virtual center line, so that when the workpiece is pressed, a rebound force is provided, and the workpiece can be conveniently loosened by the flat pressing mechanism.

Furthermore, the pressing block is plate-shaped, and a profiling structure is arranged at one end, close to the virtual center line, of the pressing block so as to be attached to the circumferential side edge of the pressed workpiece, so that the workpiece is fixed more stably.

Furthermore, the profile modeling structure is a triangular protrusion horizontally arranged, and the top end of the triangular protrusion is in arc transition.

Further, the profiling structure is a concave structure or a vertical plane structure.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a schematic structural diagram of a platen press according to a preferred embodiment of the present application.

Fig. 2 is a schematic structural diagram of a platen press mechanism according to a preferred embodiment of the present application with the processing platform removed.

FIG. 3 is a partial cross-sectional view of a platen press mechanism with the processing platen removed in accordance with a preferred embodiment of the present application.

FIG. 4 is a top view of the platen press mechanism with the processing platen removed in accordance with a preferred embodiment of the present application.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

With reference to fig. 1 to 4 of the specification, a platen press according to a preferred embodiment of the present invention is used for horizontally pressing a workpiece 10, wherein the platen press includes a telescopic device 1, a linkage 2, a guiding device and a pressing device.

The telescopic device 1 is preferably a cylinder. The telescopic power is provided by the oil cylinder.

The linkage 2 includes three pull rods 21 vertically spaced along the circumferential direction of the workpiece 10. The distribution positions of the three tie rods 21 can be appropriately adjusted according to the shape of the workpiece to be pressed. For example, for clamping a circular workpiece, as shown in fig. 1 of the specification, three tie rods 21 may be uniformly distributed at 120 ° in the circumferential direction. Obviously, the number of the pull rods 21 can also be adjusted appropriately according to the shape of the workpiece 10, wherein for a square workpiece 10, one pull rod 21 can be arranged on each of the four sides of the part; wherein for a diamond-shaped workpiece 10, one tie rod 21 may be provided on each side of the diamond. Therefore, the specific distribution position and the specific number of the tie rods 21 in the present application are not limited in detail herein, and are within the scope of the present application. The lower ends of the three pull rods 21 are fixedly connected to the telescopic device 1 so as to synchronously move upwards or downwards under the power action of the telescopic device 1.

Wherein the guiding means comprise three guiding seats 3 fixed to the processing platform 20. The guide seat 3 is matched with the pull rod 21 and is provided with a telescopic cavity 31 for the upper end of the pull rod 21 to stretch and retract and a guide cavity 32 horizontally communicated with the telescopic cavity 31. The guide cavities 32 are located on the same horizontal plane and are opposite to the circumferential virtual center line 101.

Wherein, the pressing device comprises a pressing block 4 and a transmission device. The pressing blocks 4 are respectively arranged in the guide cavities 32 and are matched with the corresponding pull rods 21 through the transmission device, so that the pull rods 21 drive the pressing blocks to synchronously approach the workpiece 10 or synchronously move away from the workpiece 10, and the workpiece 10 is pressed or loosened.

Preferably, the linkage 2 further comprises a linkage pulling plate 22. The linkage pulling plate 22 is vertically fixed on the telescopic rod of the telescopic device 1, and the three pulling rods 21 are vertically fixed on the linkage pulling plate 22 along the circumferential direction. The telescopic rod of the telescopic device 1 drives the linkage pulling plate 22 to move up and down when being telescopic, and the three pulling rods 21 can synchronously ascend or descend under the action of the linkage pulling plate 22, so that the synchronism of the three pulling rods 21 is realized, and the pressing blocks 4 are synchronously driven to press the workpiece or the workpiece 10 is synchronously driven to loosen the workpiece 10.

Preferably, in consideration of wear of the drawbar 21 due to long-term friction among moving parts, the drawbar 21 must be replaced when the clearance between the drawbar 21 and the telescopic cavity 31 is worn to a certain extent. Therefore, the pull rod 21 is also sleeved with a bushing 211. The bushing 211 is fixedly connected to the bottom end of the guide holder 3. The bushing 211 is made of a material having a low hardness and a high wear resistance, so that the wear of the drawbar 21 and the shoe 3 can be reduced. The bushing 211 is replaced when worn to a certain extent to save the cost of replacing the drawbar 21 or the shoe 3. Generally, the fit clearance between the bushing 211 and the pull rod 21 is smaller than the fit clearance between the guide holder 3 and the pull rod 21.

Preferably, the transmission means comprise a fulcrum pin 5 fixedly arranged to the presser block 4. The pull rod 21 is obliquely provided with a kidney-shaped hole 212 matched with the fulcrum pin 5 along the length direction, so that when the pull rod 21 performs telescopic motion, the fulcrum pin 5 is limited through the kidney-shaped hole 212, and the fulcrum pin 5 drives the pressing block 4 to horizontally move in the horizontal direction of the guide cavity 32.

In a preferred embodiment of the present invention, the upper end of the waist-shaped hole 212 is inclined toward the virtual center line 101 with respect to the lower end. When the telescopic device 1 extends upwards, the three pull rods 21 rise synchronously and force the fulcrum pins 5 to move outwards through the respective kidney-shaped holes 212, so that the three pressing blocks 4 synchronously release the workpiece 10. Similarly, when the workpiece 10 needs to be pressed, the telescopic rods of the telescopic device 1 are controlled to retract, and the three pull rods 21 force the fulcrum pins 5 to move horizontally inwards at the same time through the respective kidney-shaped holes 212, so that the workpiece 10 is synchronously pressed.

Preferably, an elastic device 6 is also arranged in the guide cavity 32. The elastic device 6 is arranged at one end of the pressing block 4 far away from the virtual center line 101 to provide a rebound force when the workpiece 10 is pressed, so that the flat pressing mechanism releases the workpiece 10.

Preferably, the holding-down block 4 is plate-shaped. One end of the pressing block 4 close to the virtual center line 101 is provided with a profiling structure 41 so as to be attached to the circumferential side of the pressed workpiece 10, so that the workpiece 10 is fixed more stably.

For a workpiece 10 with a groove on the circumferential side, the profile structure 41 is a horizontally arranged triangular protrusion, similar to a push bucket of a bulldozer. The top end of the triangular protrusion is in arc transition. When the workpiece 10 is pressed, the triangular protrusions at the top ends of the pressing blocks 4 simultaneously abut against the grooves on the periphery of the workpiece 10, so that the workpiece is stably pressed.

And for the workpiece 10 with a convex side edge in the circumferential direction or the workpiece 10 with a vertical plane side edge in the circumferential direction, the profiling structure 41 is correspondingly set to be a concave structure or a vertical plane structure, so that the pressing block 4 can be well attached to the circumferential side edge of the workpiece 10.

As will be readily appreciated by those skilled in the art, the contoured structure in this application lists only some of the structural configurations in the specification, and for some non-standard circumferential components, the contoured structure may be configured to cooperate with the circumferential configuration of the non-standard circumferential component.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A platen press mechanism for horizontally pressing a workpiece, wherein the platen press mechanism comprises:

a telescoping device;

and the pressing device comprises pressing blocks and a transmission device, the pressing blocks are respectively arranged in the guide cavities and are matched with the corresponding pull rods through the transmission device so as to be driven by the pull rods to synchronously approach the workpiece or synchronously depart from the workpiece.

2. The platen press mechanism of claim 1, wherein the telescoping device is a cylinder.

3. The platen press mechanism of claim 2, wherein the linkage further comprises linkage pull plates that are vertically fixed to the telescoping rods of the telescoping devices, and at least three of the pull rods are vertically fixed to the linkage pull plates in a circumferential direction.

4. The platen press mechanism of claim 1, wherein the guide further comprises a bushing disposed around the drawbar, the bushing being fixedly attached to an end of the guide block adjacent to the retractor.

5. The platen press mechanism of claim 1, wherein the transmission means comprises a fulcrum pin fixedly disposed on the pressing block, and the pull rod is provided with a kidney-shaped hole along a length direction in an inclined manner to be matched with the fulcrum pin.

6. The platen press mechanism according to claim 5, wherein one end of the kidney-shaped hole away from the retractor device is inclined with respect to the other end thereof in a direction approaching the virtual center line.

7. The platen press mechanism of claim 1, further comprising resilient means disposed within the guide cavity, the resilient means being disposed at an end of the pressing block remote from the virtual centerline to provide a resilient force when the workpiece is pressed.

8. The platen press mechanism of claim 1, wherein the hold down blocks are plate-shaped, and a contoured configuration is provided at an end of the hold down blocks adjacent the virtual centerline.

9. The platen press mechanism of claim 8, wherein the contoured structure is a horizontally disposed triangular projection having an arcuate transition at its apex.

10. The platen press mechanism of claim 8, wherein the contoured structure is a recessed structure or a vertically planar structure.