CN118253646A

CN118253646A - Clamping device for quick assembly disassembly of upper bending die

Info

Publication number: CN118253646A
Application number: CN202410528858.9A
Authority: CN
Inventors: 张一帆; 张迎年; 吴晨
Original assignee: ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL AND PATTERNS MANUFACTURING CO LTD
Current assignee: ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL AND PATTERNS MANUFACTURING CO LTD
Priority date: 2024-04-29
Filing date: 2024-04-29
Publication date: 2024-06-28

Abstract

The invention discloses a clamping device for rapidly disassembling and assembling a bending upper die, which comprises an upper die holder, a hook clamping piece and a side clamping plate, wherein the upper die holder is provided with a clamping groove; the hook clamp is arranged between the side clamp plate and the upper die holder, and the side clamp plate restricts the moving track of the hook clamp and does not separate from the moving track; when the side clamping plate moves towards the direction close to the upper die seat, the side clamping plate drives the hook clamping piece to move upwards, and the hook clamping piece drives the upper die cutting tool to move upwards until the upper die cutting tool is fixed on the upper die seat; when the side clamping plate moves in the direction away from the upper die base, the hook clamping piece and the upper die cutting tool descend to the lowest point under the action of self gravity. The vertical quick assembly disassembly work of last mould cutting tool can be accomplished, compact structure, the system is little and with low costs, stability and reliability are high, ensure installation accuracy and panel precision of bending.

Description

Clamping device for quick assembly disassembly of upper bending die

Technical Field

The invention relates to a quick assembly technology of an upper die of a bending machine, in particular to a clamping device for quick assembly and disassembly of the upper die of the bending machine.

Background

The existing clamping mechanism for the upper die of the bending machine generally adopts a mechanical clamping mechanism, is arranged between a connecting pressing plate and an upper die connecting plate, and is usually provided with a certain number of clamping devices, each clamping device is fastened by a screw, so that tens of screws are required to be loosened and tightened when the upper die is installed or replaced, the time and the labor are wasted, a special spanner is required to be equipped, and the operation is inconvenient. Meanwhile, the upper bending die is clamped by the screw tightness and the connecting plate pressing plate, the clamping force of the pressing plate is uneven, the center of the upper bending die is inconsistent, and the quality of a bending product is affected.

At present, the mechanical clamping structure is more common, for example, the quick mechanical clamping device for the upper die of the bending machine with compensation disclosed by CN201610433585.5 comprises a middle plate, a rear pressing plate, an adjusting block, a connecting plate, a front pressing plate and an eccentric shaft handle, wherein the middle plate is in inclined surface contact with the adjusting block and is fixedly connected with the connecting plate respectively, and the deflection compensation of the upper die of the bending machine can be realized through the position adjustment of the adjusting block; the front pressing plate and the middle plate are connected through a fixing bolt sleeved with a spring II and a spherical washer, and the front pressing plate can rotate along the cambered surface of the spherical washer; the front pressing plate and the rear pressing plate are fixedly connected with the middle plate; a needle bearing is arranged on the connecting plate, and an eccentric shaft handle is arranged on the front pressing plate; rubber strips are arranged at corresponding positions on the front pressing plate and the rear pressing plate, and movable inlaid strips which can be clamped into square grooves of the upper bending die are arranged. There are the following problems: since the upper die has a mounting reference surface (a surface or B surface), as shown in fig. 4, an operator is required to mount the upper die on the mounting reference surface for clamping.

There are of course other mechanical clamping mechanisms which differ slightly in their constructional form, but differ in principle, for example in the following patent numbers: 201620459476.6, 201210331803.6, etc., which are substantially free of the drawbacks indicated above and which are not described in detail herein.

Disclosure of Invention

The technical problems to be solved by the invention are as follows:

how to provide a compact structure and can accomplish the quick clamping structure of upper die of bending that upper die body goes up to install on the reference surface voluntarily.

In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention adopts the following technical scheme:

The clamping device for rapidly disassembling and assembling the upper bending die comprises an upper die holder, a hook clamping piece and a side clamping plate;

The hook clamp is arranged between the side clamp plate and the upper die holder, and the side clamp plate restricts the moving track of the hook clamp and does not separate from the moving track;

When the side clamping plate moves towards the direction close to the upper die seat, the side clamping plate drives the hook clamping piece to move upwards, and the hook clamping piece drives the upper die cutting tool to move upwards until the upper die cutting tool is fixed on the upper die seat, so that the upper die cutting tool is in a compression state;

When the side clamping plate moves in the direction away from the upper die base, the hook clamping piece and the upper die cutting tool descend to the lowest point under the action of self gravity.

Preferably:

the hook clamp comprises a hook clamp body, wherein the hook clamp body is used for hooking the upper die cutting tool to prevent falling in a natural state;

The top of the hook clamp body is integrally connected with a pressure-bearing body, and the pressure-bearing body is positioned at the top of the upper die cutting tool;

The pressure-bearing body and the hook clamping area of the hook clamping body are surrounded to form a limiting area, and the limiting area is used for limiting the vertical synchronous movement of the upper die cutting tool and the hook clamping piece.

Preferably:

the bottom of one side of the hook clamp body, which is close to the upper die holder, is provided with an inclined upward wedge-shaped surface.

Preferably:

The hook clamp piece also comprises a movable body, the two opposite side clamping plates of the movable body slide relatively and are not separated, and the hook clamp piece is integrally connected to one side of the movable body, opposite to the upper die holder.

Preferably:

the side clamping plates are provided with guide structures, and the guide structures are used for synchronously guiding the hook clamping pieces in the vertical and horizontal directions.

Preferably:

the guide structure is obliquely arranged upwards, and is positioned at the bottom of one side of the side clamping plate, which is close to the upper die holder.

Preferably:

the guide structure is a groove with an included angle of 10-89 degrees with the horizontal plane.

Preferably:

The guide structure is characterized in that a plurality of steps are continuously arranged on the lower surface of the guide structure along the depth direction of the guide structure, and a step surface matched with the steps is arranged on one side, opposite to the guide structure, of the hook clamping piece.

Preferably:

the lower surface of the top part of the hook clamping piece is provided with a boss I extending downwards;

the lower surface of the inner wall of the guide structure is provided with a boss II which extends upwards;

the boss II is located above the boss II and corresponds to the boss II in position, and the boss II are used for restraining the lowest point position of the hook clamping piece together.

Preferably:

and the side clamping plates are provided with limiting parts which are used for limiting the movement directions of the hook clamping pieces relative to the side clamping plates.

Preferably:

the side clamping plate is provided with a T-shaped mounting hole, and the limiting piece is arranged in the T-shaped mounting hole and is fixedly connected with the hook clamping piece.

Preferably:

The T-shaped mounting hole is positioned on one side of the side clamping plate, which is opposite to the upper die holder, and the section of the T-shaped hanging hole is of a structure with a large upper part and a small lower part.

Preferably:

the T-shaped mounting hole is obliquely downwards arranged, and an included angle between the T-shaped hanging hole and the horizontal plane is 10-89 degrees.

Preferably:

The limiting piece comprises a limiting pin, the limiting pin is movably arranged in the T-shaped mounting hole, and the limiting pin is in threaded connection with the hook clamping piece.

Preferably:

The limiting piece further comprises a spring sleeved on the outer side of the limiting pin.

Preferably:

the clamping device further comprises a driving piece, and the driving piece is used for driving the side clamping plate to be selectively close to or far away from the upper die holder.

Preferably:

the side clamping plate is arranged on the front side of the upper die holder;

the driving piece is arranged at the rear side of the upper die holder;

the movable end of the driving piece penetrates through the upper die seat and drives the side clamping plate to be far away from or close to the upper die seat.

Preferably:

The upper die holder is provided with a guide rod which is arranged in parallel with the moving direction of the movable end of the driving piece and used for guiding the movement of the side clamping plate when the side clamping plate is close to or far away from the upper die holder.

Preferably:

the driving piece is an air cylinder, an oil cylinder or an electric telescopic rod.

Preferably:

The clamping device further comprises a pressurizing screw rod or an operating handle, and the pressurizing screw rod or the operating handle is used for driving the side clamping plate to be close to or far away from the upper die holder.

Compared with the prior art, the invention has the following beneficial effects:

1. When the driving piece is adopted to drive the side clamping plates to approach the upper die holder, the side clamping plates restrict the movement track of the hook clamping pieces, so that the opposite side clamping plates of the hook clamping pieces can move up and down and front and back simultaneously, and further the lifting of the die cutting tool is completed and fixed on the upper die holder, and the self-loading onto the mounting reference surface is completed. The top of going up mould cutting tool is tightly laminated in the upper die base bottom surface under the effect of hook folder for go up mould cutting tool atress and can effectively transfer to the upper die base on, go up the mould cutting tool fixed back, have a rear side top of going up the mould cutting tool and receive decurrent effort, the top rear side receives a forward effort, the top front side receives a backward effort, receive ascending power with the fluting of hook folder adaptation simultaneously, make whole mould of bending have structural stability good and do not have about micro-displacement and the torsion problem when bending. The supporting point of the upper die cutting tool on the upper die seat is positioned at the inclined lower side of the fixed part area. When the side clamping plate is far away from the upper die base, the upper die cutting tool and the hook clamping piece descend to the lowest point, and the upper die cutting tool and the hook clamping piece cannot be separated, so that the upper die cutting tool and the hook clamping piece can be conveniently disassembled.

2. The die is different from the prior art that the side face of the pressing block is pressed on the inner side wall of the upper die base, and the structural stability and the reliability of the scheme are higher, so that the installation precision and the bending precision can be effectively ensured. Before the clamping action, the upper die cutting tool can be installed from bottom to top, the hook clamp body is away from the upper die cutting tool under the action of self gravity, and then the upper die cutting tool is hooked before the side clamping plate approaches the upper die holder, so that falling is prevented. When the driving piece drives the side clamping plates to be far away from the upper die base, the upper die cutting tool and the hook clamping piece can descend to the lowest point to prevent falling, the hook clamping piece can move relative to the side clamping plates, the hook clamping piece can be far away from the upper die cutting tool when the upper die cutting tool deflects and simultaneously ascends relative to the side clamping plates, separation of the upper die cutting tool and the hook clamping piece is completed, and further vertical rapid assembly and disassembly are completed.

3. When the hook clamping piece structure without the pressure-bearing body is detached, the upper die cutting tool is firstly lifted for a small distance, then the bottom of the hook clamping piece is deflected backwards, the top of the hook clamping piece is deflected forwards, the opposite side clamping plates of the hook clamping piece are driven to lift upwards and gradually separate from the upper die cutting tool, the hook clamping piece can lift upwards relative to the cutting tool when the hook clamping piece is separated from the cutting tool until the hook surface of the hook clamping piece is separated from the cutting tool, after the hook clamping piece is separated from the hook region of the upper die cutting tool, the upper die cutting tool is vertically lowered, and the position of the hook clamping piece is not changed before the hook clamping piece is completely separated from the hook region because the front and rear positions of the top of the upper die cutting tool are unchanged.

4. When the hook clamping piece structure with the pressure-bearing body is detached, after the hook clamping piece and the upper die cutting tool are lifted a certain distance, the upper die cutting tool and the upper die seat are always kept attached when lifted, the hook grooves on the hook clamping piece and the upper die cutting tool can be separated, and the upper die cutting tool falls down to be separated from the upper die seat and the hook clamping piece quickly, so that the upper die cutting tool can be separated directly from the upper die seat. The distance between the position of the hook clamping piece and the position of the upper die cutting tool at the lowest point and the position of the upper die cutting tool fixed on the upper die seat is larger than the depth of the hooking groove, so that the hooking groove is completely separated from the hooking groove of the upper die cutting tool when a pressure-bearing body contacts the upper die seat, and the upper die cutting tool can be disassembled directly upwards and downwards when moving vertically downwards. The limit area is fully attached to the top surface of the top of the upper die cutting tool and the side pressure surface.

5. The side clamping plate moving mode in the invention can adopt pneumatic, electric and hydraulic modes, a plurality of driving parts can be adopted on the whole machine, a plurality of driving parts can adopt a serial/parallel structure, the side clamping plate moving mode can be operated simultaneously or independently operated and controlled, and the rapid assembly and disassembly operations of a plurality of cutting tools can be conveniently completed simultaneously. The movement mode of the side clamping plate approaching to or separating from the upper die holder can also be completed by adopting a traditional structure such as a feeding piece (a feeding screw) and the like. The front side pressing plate is pulled back from the back through the driving piece, so that the size of the front structure can be reduced, and the use is convenient. Meanwhile, when the molds and the side clamping plates of different types are replaced, only the front structure is removed and the hook clamping pieces are replaced, so that the mold is of various preset specifications, the driving pieces on the back can be selected in advance, the workload is reduced, and the universality is high.

6. The hook clamping piece adopted by the invention has double functions, namely, the hook clamping piece is used for preventing falling of the upper die cutting tool before compression and after release of the compression, and the upper die cutting tool is fixed on the upper die seat, so that the upper die cutting tool can be effectively fixed, mechanical transmission and torsion resistance during bending are ensured, and thicker, harder or bending plates with larger bending angles can be bent.

7. According to the invention, the side clamping plates are close to the upper die seat to drive the hook clamping piece to lift and compress the upper die cutting tool, the compression surface can comprise a front side, a rear side, a top side and the top side of the hook clamping piece corresponding to the hooking region on the upper die cutting tool to form four-side clamping, so that the upper die cutting tool can be effectively ensured to obtain uniform clamping force, and the clamping structure is higher in stability.

8. The invention also adopts the driving piece and the pressing plate to be positioned at the two sides of the upper die holder, optimizes the front-back structural layout on the upper die holder, can better utilize the space, ensures that the whole clamp system is more compact, simultaneously provides a larger operation space and is convenient for installing, adjusting and replacing the die. The layout ensures that the operation and maintenance are more convenient and the working efficiency is improved. The driving piece can be used as a general piece or a standard piece of the clamping structures of the same type, so that when the clamping structures of the same type and different specifications are replaced, the driving piece at the rear side is not required to be replaced, and the workload is reduced. The clamping force can be shared more uniformly, and the stress balance of the upper die in the clamping process is ensured. The balanced distribution reduces the deformation or displacement of the die caused by uneven stress, thereby improving the stability and precision of processing.

9. In the invention, as the pressure-bearing body is arranged on the hook clamping piece, in the ascending process of the upper die body, if the width of the upper die body is obviously smaller than that of the sliding block due to the self weight of the hook clamping piece, when the upper die body is jacked on the pressure-bearing body, if the upper die body is not jacked to the position of the hook clamping piece close to the middle part, the inclined state that one end of the hook clamping piece is jacked up, the other end is stressed to be smaller and jacked up at the same height does not occur, so that the resistance between the hook clamping piece and the guide structure is increased, the problem of clamping is easy to occur, meanwhile, the straightness of movement is also poorer, serious abrasion occurs, and the phenomenon of 'virtual disassembly' that one end of the anti-falling surface is separated from the upper die body and the other end of the anti-falling surface is positioned in a notch of the upper die body is also caused, so that the disassembly at one time cannot be completed. Still can be because be provided with the hole of driving piece and guide bar on the side splint, if set up the action and keep the structure to set up in side splint upside, can appear balanced point position less problem (generally at two to three), so set up oblique ascending waist type hole in the bottom of side splint, can set up the position according to actual demand, can effectively avoid the hole of driving piece and guide bar, balanced point position can increase greatly, prevents this problem emergence at the downthehole installation action of waist type holder, ensures the straightness that guide structure and hook clamp smoothly slide and move. Compared with a mode of adopting a limiting pin and a spring, the transverse installation can be realized.

Drawings

FIG. 1 is a schematic diagram of the whole structure after clamping according to the present invention;

FIG. 2 is a schematic view of a side splint according to the present invention;

FIG. 3 is a schematic view of a hook clip according to the present invention;

FIG. 4 is a schematic view of the structure of the upper die cutting tool of the present invention;

FIG. 5 is a schematic view of the whole structure of the present invention when disassembled;

FIG. 6 is a schematic diagram of the whole structure after clamping according to the present invention;

FIG. 7 is a second schematic view of a hook clip according to the present invention;

FIG. 8 is a schematic diagram of the whole structure of FIG. 6 when detached;

FIG. 9 is a second schematic overall structure of the assembly of FIG. 6;

FIG. 10 is a schematic view of the overall structure of the side splint of the present invention;

FIG. 11 is a schematic diagram of the whole structure after clamping according to the present invention;

fig. 12 is a side view of the side splint of fig. 11.

FIG. 13 is a schematic diagram III of the overall structure of the present invention after clamping;

FIG. 14 is a schematic view of the overall structure of the present invention when disassembled;

FIG. 15 is a schematic view of the hook clamp of FIG. 13 after clamping;

FIG. 16 is a schematic view of the hook clamp of FIG. 14 when removed;

FIG. 17 is a view showing the construction of the guide grooves on the wedge-shaped surface of FIG. 13;

FIG. 18 is a diagram showing the connection between the wedge surface and the stop block of FIG. 13;

FIG. 19 is a schematic view of the side splint of FIG. 13;

FIG. 20 is an enlarged view of a portion of FIG. 19 at A;

FIG. 21 is a schematic view of the side splint of FIG. 19;

FIG. 22 is a schematic view of the structure of the clamping plate on the pressing side of the pressing screw in the present invention;

In the figure: 1. an upper die holder; 11. an upper die mounting groove; 2. a side clamping plate; 21. t-shaped hanging hole; 211. a connecting bolt; 212. a return spring; 22. a guide structure; 23. a boss; 231. a mounting base; 2311. an axial bore; 2312. a contact column; 2313. a radial hole; 2314. a spring; 2315. releasing the column; 2316. guide sleeve; 2317. a limiting hole; 2318. a positioning head; 24. a second connecting hole; 25. a first connecting hole; 3. a hook clip; 31. a movable body; 32. a hook clamp body; 321. a limiting block; 322. a limiting body; 33. a boss I; 34. a wedge surface; 341. a guide groove; 3411. a first guide part; 3412. a second guide part; 3413. a guide part III; 3414. a guide part IV; 35. a pressure-bearing body; 4. a driving member; 5. a die cutting tool is arranged; 51. a hooking groove; 6. and (5) a compensation block.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

One embodiment is:

as shown in fig. 1, the clamping device for rapidly disassembling and assembling the upper bending die comprises an upper die holder 1, a hook clamping piece 3 and a side clamping plate 2. The hook clamp 3 is arranged between the side clamping plate 2 and the upper die holder 1, and the side clamping plate 2 constrains the moving track of the hook clamp 3 without separating the two. The hook clamping piece 3 is set by the side clamping plate 2 in a track way, and the side clamping plate 2 moves along a prescribed route when moving away from and approaching the upper die holder 1.

When the side clamping plate 2 moves towards the direction approaching the upper die holder 1, the side clamping plate 2 drives the hook clamping piece 3 to move upwards, and the hook clamping piece 3 drives the upper die cutting tool 5 to move upwards until the upper die cutting tool 5 is fixed on the upper die holder 1.

When the side clamping plate 2 moves in a direction away from the upper die holder 1, the hook clamping piece 3 and the upper die cutting tool 5 descend to the lowest point under the action of self gravity, and the rear upper die cutting tool is selectively separated from the hook clamping piece at the lowest point.

In use, the hook clamp can limit the falling of the upper die blade 5 by gravity after the upper die blade is lifted into the area between the side clamping plate 2 and the upper die holder 1, so as to prevent falling. When the side clamping plate 2 is close to the upper die holder 1, the hook clamping piece can drive the upper die cutting tool to ascend, the upper die body is pressed on the upper die holder, further the ascending action is completed, and the pressing and the installation on the installation reference surface are completed. The side clamping plate 2 is close to or far from the upper die holder 1, and a screw penetrating through the side clamping plate 2 can be arranged on the upper die holder 1 and used for pressing the side clamping plate 2 towards the side close to the upper die holder 1.

One embodiment is:

As shown in fig. 3, the hook clamp 3 is subjected to further improved optimization: the hook clamp 3 includes a hook clamp body 32, and the hook clamp body 32 is used for hooking the upper die cutting tool 5 to prevent falling off in a natural state. The hook clamp body 32 is utilized to hook the upper die cutting tool 5 after being upwards arranged between the side clamping plate 2 and the upper die holder 1, so that the gravity effect can be overcome, and the falling-off can be prevented. The hook clamping surface of the hook clamping body 32 comprises an L-shaped structure (concave structure) consisting of a horizontal plane and a vertical plane, and the hook clamping body 32 is in a suspending state at the lowest point before the upper die cutting tool 5 is pressed.

As shown in fig. 7, the top of the hook clamp 32 is integrally connected with a pressure-bearing body 35, and the pressure-bearing body 35 is positioned at the top of the upper die cutting tool 5; the pressure-bearing body 35 and the hook clamping area of the hook clamping body 32 are surrounded to form a limiting area, and the limiting area is used for limiting the synchronous movement of the upper die cutting tool 5 and the hook clamping piece 3 during the upward movement.

When the die is disassembled, after the side clamping plate 2 is far away from the upper die holder 1 to the initial position (namely, the hook clamping piece 3 descends to the lowest point), the upper die cutting tool 5 actively ascends and drives the pressure-bearing body 35 to ascend, the pressure-bearing body 35 moves forwards relative to the upper die cutting tool 5 when ascending, the hook clamping body 32 is separated from the upper die cutting tool 5, and then the upper die cutting tool 5 is rapidly pulled down to finish the disassembly work. The upper die cutting tool can be firstly inclined upwards and then close to the upper die seat, and finally rapidly pulled down to finish the disassembling work.

The hook clamping piece 3 further comprises a movable body 31, the movable body 31 slides relatively to the side clamping plate 2 without separation, and the hook clamping body 32 is integrally connected to one side of the movable body 31, which is opposite to the upper die holder 1. Ensuring that the relative movement of the hook clamp 3 and the side pressure plate 2 is performed smoothly.

One embodiment is:

As shown in fig. 2, the side splint 2 is subjected to further improvement optimization treatment: the side clamping plate 2 is provided with a guiding structure 22, and the guiding structure 22 is used for synchronously guiding the hook clamping piece 3 vertically and horizontally.

The guide structure 22 is obliquely arranged upwards, and the guide structure 22 is positioned at the bottom of one side of the side clamping plate 2, which is close to the upper die holder 1. The guide structure 22 is a groove with an included angle of 10-89 degrees with the horizontal plane, preferably 45 degrees, and the vertical displacement of the hook clamping piece 3 is equal to the horizontal front-back displacement.

One embodiment is:

As shown in fig. 2, the specific structure of the guide structure 22 is further defined: the lower surface of the guide structure 22 is provided with a plurality of steps continuously arranged along the depth direction of the guide structure 22, and one side of the hook clamping piece 3, which is opposite to the guide structure 22, is provided with a step surface matched with the steps. The structure strength can be ensured, and the thickness and the volume of the side clamping plate are reduced on the premise of ensuring the stroke.

One embodiment is:

As shown in fig. 1,4, 5,6 and 7, a downward extending boss 33 is arranged on the lower surface of the top of the hook clamping piece 3; the lower surface of the inner wall of the guide structure 22 is provided with a boss II 23 which extends upwards; the first boss 33 is located above the second boss 23 and corresponds to the second boss in position, and the first boss and the second boss are used for restraining the lowest point position of the hook clamping piece 3 together. The setting of the bottommost point is realized, and the mounting strength can be ensured.

One embodiment is:

As shown in fig. 1, 2, 5, 6 and 7, the side clamping plate 2 is provided with a limiting piece, the limiting piece is used for limiting the movement direction of the hook clamping piece 3 relative to the side clamping plate 2, the side clamping plate 2 is provided with a T-shaped mounting hole 21, and the limiting piece is mounted in the T-shaped mounting hole 21 and is fixedly connected with the hook clamping piece 3. The limiting member serves to limit the lateral freedom of the hook clamp member 3 within the guide structure 22.

The T-shaped mounting hole 21 is positioned on one side of the side clamping plate 2, which is opposite to the upper die holder 1, the cross section of the T-shaped hanging hole 21 is of a structure with a large upper part and a small lower part, the T-shaped mounting hole 21 is obliquely downwards arranged, an included angle between the T-shaped hanging hole 21 and the horizontal plane is 10-89 degrees, preferably 45 degrees, and the vertical displacement of the hook clamping piece 3 is equal to the horizontal front-back displacement.

The limiting piece comprises a limiting pin 211, the limiting pin 211 is movably installed in the T-shaped installation hole 21, and the limiting pin 211 is in threaded connection with the hook clamping piece 3.

The limiting piece further comprises a spring 212 sleeved on the outer side of the limiting pin 211, and impact between bosses can be reduced by the aid of the spring 212.

One embodiment is:

As shown in fig. 11 and 12, the side clamping plate 2 is provided with a waist-shaped hole 26, the waist-shaped hole 26 is located at the bottom of one side of the side clamping plate 2 opposite to the upper die holder 1, the waist-shaped hole 26 is obliquely arranged upwards and is communicated with the guide groove structure 22, the limiting piece is a connecting pin 27 for connecting the hook clamping piece 3, and the connecting pin 27 is perpendicular to the hook clamping piece 3.

Because the pressure-bearing body is arranged on the hook clamping piece, in the upward process of the upper die body, due to the self weight of the hook clamping piece, if the width of the upper die cutting tool is obviously smaller than that of the sliding block, when the upper die cutting tool is jacked up on the pressure-bearing body, if the upper die cutting tool is not jacked to the position of the hook clamping piece close to the middle part, the inclined state that one end of the hook clamping piece is jacked up, the other end is stressed to be smaller and jacked up at the same height does not occur, so that the resistance between the hook clamping piece and the guide structure is increased, the problem of clamping is easy to occur, meanwhile, the straightness of movement is poor, serious abrasion occurs, the phenomenon that one end of the falling-preventing surface is separated from the upper die cutting tool, and the other end of the falling-preventing surface is still positioned in the notch of the upper die cutting tool is also caused, so that the one-time disassembly cannot be completed. Still can be because be provided with the hole of driving piece and guide bar on the side splint, if set up the action and keep the structure to set up in side splint upside, can appear balanced point position less problem (generally at two to three), so set up oblique ascending waist type hole in the bottom of side splint, can set up the position according to actual demand, can effectively avoid the hole of driving piece and guide bar, balanced point position can increase greatly, prevents this problem emergence at the downthehole installation action of waist type holder, ensures the straightness that guide structure and hook clamp smoothly slide and move. Compared with a mode of adopting a limiting pin and a spring, the transverse installation can be realized.

One embodiment is:

As shown in fig. 1, 5,6, 8 and 9, the clamping device further comprises a driving member 4, and the driving member 4 is used for driving the side clamping plate 2 to be selectively close to or far away from the upper die holder 1. The side clamping plate 2 is arranged on the front side of the upper die holder 1; the driving piece 4 is arranged at the rear side of the upper die holder 1; the movable end of the driving piece 4 penetrates through the upper die holder 1 and drives the side clamping plate 2 to be far away from or close to the upper die holder 1. The upper die holder 1 is provided with a guide rod which is arranged in parallel with the moving direction of the movable end of the driving piece 4 and used for moving and guiding the side clamping plate 2 when the side clamping plate is close to or far from the upper die holder 1.

The driving piece 4 is an air cylinder, an oil cylinder or an electric telescopic rod.

As shown in fig. 20, the clamping device further includes a pressing screw or an operating handle, where the pressing screw or the operating handle is used to drive the side clamping plate 2 to approach or separate from the upper die holder 1. The pressing screw penetrates through the side pressing plate and is in threaded connection with the upper die holder 1, the pressing screw is used for pressing the side clamping plate 2 to the side close to the upper die holder 1, and the operating handle is in a structure shown as 201610433585.5.

In one of the above-mentioned schemes, as shown in fig. 11 to 16, the bottom of the hook clamp 32 may be improved, a position-adjustable limiting block 321 is installed on the wedge surface 34 of the hook clamp 32, the limiting block 321 is slidably installed on the wedge surface 34, a guiding groove 341 is provided on the wedge surface 34, a limiting body 322 is installed on the limiting block 321, the limiting body 322 is rotatably installed on the limiting block 321, the free end is provided with a hook part movably installed in the guiding groove 341, the limiting body 322 has a certain elastic deformation capability in a thin rod-shaped structure, the guiding groove 341 comprises a first guiding part 3411, a second guiding part 3412, a third guiding part 3413 and a fourth guiding part 3414 which are sequentially and continuously arranged, the tail end of the fourth guiding part 3414 is communicated with the head end of the first guiding part 3411, and the tail end depth of the fourth guiding part 3414 is smaller than the head end depth of the first guiding part 3411, the depth of the groove of the first guide part 3411 is gradually reduced along the arrangement direction, the depth of the first guide part 3412 is larger than the depth of the tail end of the first guide part 3411, the depth of the second guide part 3412 is gradually reduced along the arrangement direction, the depth of the first guide part 3413 is larger than the depth of the tail end of the second guide part 3412, the depth of the third guide part 3413 is accordingly reduced along the arrangement direction, the depth of the first guide part 3414 is larger than the depth of the tail end of the third guide part 3413, the depth of the fourth guide part 3414 is gradually reduced along the arrangement direction, the joint position of the first guide part 3413 and the tail end of the second guide part 3412 is lower than the joint position of the tail end of the third guide part 3413 and the head end of the second guide part 3412, and the joint position of the first guide part 3414 and the head end of the first guide part 3411 are higher than the joint position of the fourth guide part 3414 and the first guide part 3411. The distance between the bottom surface of the limiting block 321 and the hook clamping surface of the limiting body 322 at the tail end of the second guide part 3412 is smaller than or equal to the size of the notch of the upper die cutting tool 5, and the distance between the bottom surface of the limiting block 321 and the hook clamping surface of the limiting body 322 at the head end of the first guide part 3411 is larger than the size of the notch of the upper die cutting tool 5. That is, the limiting block 321 has two limiting values (a maximum value and a minimum value, the minimum value is smaller than or equal to the size of the notch of the upper die cutting tool 5 on the hook clamping body 32, so that the notch is convenient to enter, and the maximum value is larger than the size of the notch of the upper die cutting tool 5, so that the notch is prevented from entering).

When the upper die cutting tool 5 is installed, the upper die cutting tool 5 is installed from bottom to top, the top of the upper die cutting tool 5 contacts the limiting block 321 and drives the limiting block 321 to move upwards, the limiting block 321 moves upwards relative to the hook clamp body 32 and moves backwards relatively, the limiting block 321 reaches the front end of the first 3411 guiding part 322, the hook part of the limiting block 321 and the hook clamp body 32 move upwards together along with the continuous ascending of the upper die cutting tool 5, after the limiting block 321 and the upper die cutting tool 5 are separated, the hook part of the limiting block 322 enters the front end of the third 3413 guiding part from the front end of the second 3412, and along with the continuous ascending until the hook clamp body 32 is positioned on the lower side of the upper surface of the notch inner wall of the upper die cutting tool 5, then falls down the upper die cutting tool 5, the hook clamp body 32 enters the notch under the action of gravity, then the side pressing plate 2 (under the action of the driving part 4) approaches the upper die seat, and the hook clamp body 5 is pressed and fastened on the upper die seat.

When the upper die cutting tool 5 is disassembled, the upper die cutting tool 5 is moved upwards, the lower surface of the notch of the upper die cutting tool 5 acts on the limiting block 321 to move upwards, the hook part of the limiting body 322 enters the head end of the guide part IV 3414 from the head end of the guide part III 3413, the hook clamp 32 is separated from the notch, after the limiting body 322 enters the head end of the guide part IV 3414, the upper die cutting tool 5 falls down afterwards, the limiting body 322 enters the head end of the guide part IV 3411 along the tail end of the guide part IV 3414, the limiting block 321 moves downwards and gradually approaches to the hook clamp 32, and when the limiting block 321 is completely separated from the notch, one side of the limiting block 321, which is close to the lower die seat, is a plane, and the height difference between the bottom of the limiting block 321 and the hook clamp surface of the hook clamp 32 is larger than the opening size of the notch, so that the hook clamp 32 cannot enter the notch, and the upper die cutting tool 5 falls down without obstruction, and the disassembling work on the straight side is completed.

In one embodiment, as shown in fig. 17 to 19, the local structure of the side clamping plate 2 may be improved, the side clamping plate 2 is provided with a first connecting hole 25 and a second connecting hole 24, the first connecting hole 25 is used for installing the movable end of the driving member 4, the first connecting hole 25 is internally provided with a mounting seat 231, one side of the mounting seat 231 opposite to the movable end is provided with an axial hole 2311, the axial hole 2311 is movably provided with a contact post 2312, the contact post 2312 is exposed outside the axial hole 2311 and is opposite to the movable end, a radial hole 2313 is arranged on the side of the mounting seat 231, a spring 2314 and a release post 2315 are installed in the radial hole 2313, the release post 2315 is flexibly mounted through the spring 2314, the free end portion of the release post is exposed, the exposed portion of the release post can freely enter the second connecting hole 24, one end of the contact post 2312 and the release post 2315 is in a wedge-shaped joint, the connecting hole 24 is internally provided with a guide sleeve 2316, the guide sleeve 2316 and the guide rod 2316 are axially adapted, the guide sleeve 2316 is provided with a limit pin 2317, the limit pin 2318 and the limit pin 2318 is opposite to the limit pin 2317 and the limit pin 2315.

When the movable end of the driving piece 4 drives the side clamping plate 2 to approach the upper die holder, the movable end is firstly far away from the contact column 2312, and after all the movable end is separated, the movable end drives the side clamping plate 2 to approach one side of the upper die holder, and when the side clamping plate 2 moves to the minimum distance relative to the upper die holder (when the hook clamping piece compresses and fixes the upper die cutting tool on the upper die holder), the limit head 2318 on the guide rod is matched in the limit hole 2317 of the guide sleeve 2316, so that self-locking is completed; when the movable end is disassembled, the movable end compresses the contact post 2312 gradually, so that the release post 2315 breaks away the limit head 2318 on the guide rod from the limit hole 2317, and then the side clamping plate 2 is driven to be far away from the upper die holder to the initial position. After the limit head 2318 on the guide rod is matched with the limit hole 2317 on the guide sleeve 2316, self-locking is completed, and unlocking is completed when the driving piece 4 drives the side clamping plate 2 to be far away from the upper die holder. Adverse effects caused by the failure of fixing the upper die cutting tool in the bending process are prevented.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitutions may be partial structures, devices, or method steps, or may be a complete solution. After the hook clamping piece is used for fixing the upper die body, the rear side wall of the top of the upper die body and the upper surface of the rear side of the top are subjected to pressure equalization on the upper die holder. The technical proposal and the invention concept are equivalent to or changed in accordance with the invention, and the invention is covered in the protection scope of the invention.

Claims

1. The clamping device for rapidly disassembling and assembling the upper bending die comprises an upper die holder (1) and is characterized by further comprising a hook clamping piece (3) and a side clamping plate (2);

The hook clamping piece (3) is arranged between the side clamping plate (2) and the upper die holder (1), and the side clamping plate (2) restricts the moving track of the hook clamping piece (3) and is not separated from the moving track;

When the side clamping plate (2) moves towards the direction close to the upper die holder (1), the side clamping plate (2) drives the hook clamping piece (3) to move upwards, and the hook clamping piece (3) drives the upper die cutting tool (5) to move upwards until the upper die cutting tool (5) is fixed on the upper die holder (1);

When the side clamping plate (2) moves in a direction away from the upper die holder (1), the hook clamping piece (3) and the upper die cutting tool (5) descend to the lowest point under the action of self gravity.

2. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 1, wherein:

the hook clamping piece (3) comprises a hook clamping body (32), wherein the hook clamping body (32) is used for hooking the upper die cutting tool (5) to prevent falling in a natural state;

the top of the hook clamp body (32) is integrally connected with a pressure-bearing body (35), and the pressure-bearing body (35) is positioned at the top of the upper die cutting tool (5);

The pressure-bearing body (35) and the hook clamping area of the hook clamping body (32) are surrounded to form a limiting area, and the limiting area is used for limiting the vertical synchronous movement of the upper die cutting tool (5) and the hook clamping piece (3).

3. The clamping device for quick assembly disassembly of an upper bending die according to claim 2, wherein:

the bottom of the hook clamp body (32) close to one side of the upper die holder (1) is provided with an inclined upward wedge-shaped surface (34).

4. The clamping device for quick assembly disassembly of an upper bending die according to claim 2, wherein:

The hook clamping piece (3) further comprises a movable body (31), the movable body (31) slides relatively to the side clamping plates (2) without separation, and the hook clamping body (32) is integrally connected to one side of the movable body (31) opposite to the upper die holder (1).

5. The clamping device for quick assembly disassembly of an upper bending die according to claim 1 or 4, wherein:

The side clamping plate (2) is provided with a guide structure (22), and the guide structure (22) is used for synchronously guiding the hook clamping piece (3) in the vertical direction and the horizontal direction.

6. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 5, wherein:

the guide structure (22) is obliquely arranged upwards, and the guide structure (22) is positioned at the bottom of one side of the side clamping plate (2) close to the upper die holder (1).

7. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 5, wherein:

The guide structure (22) is a groove with an included angle of 10-89 degrees with the horizontal plane.

8. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 5, wherein:

the lower surface of the guide structure (22) is provided with a plurality of steps which are continuously arranged along the depth direction of the guide structure (22), and one side of the hook clamping piece (3) right opposite to the guide structure (22) is provided with a step surface which is matched with the steps.

9. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 5, wherein:

the lower surface of the top of the hook clamping piece (3) is provided with a boss I (33) extending downwards;

the lower surface of the inner wall of the guide structure (22) is provided with a boss II (23) extending upwards;

The boss II (23) is positioned above the boss II (23) and corresponds to the boss II in position, and the boss II are used for restraining the lowest point position of the hook clamping piece (3) together.

10. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 1, wherein:

And the side clamping plate (2) is provided with a limiting part which is used for limiting the movement direction of the hook clamping piece (3) relative to the side clamping plate (2).

11. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 10, wherein:

The side clamping plate (2) is provided with a T-shaped mounting hole (21), the T-shaped mounting hole (21) is positioned on one side of the side clamping plate (2) opposite to the upper die holder (1), and the cross section of the T-shaped hanging hole (21) is of a structure with a large upper part and a small lower part;

the limiting piece is arranged in the T-shaped mounting hole (21) and is fixedly connected with the hook clamping piece (3).

12. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 11, wherein:

The T-shaped mounting hole (21) is obliquely downwards formed, and an included angle between the T-shaped hanging hole (21) and the horizontal plane is 10-89 degrees.

13. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 11, wherein:

The side clamping plate (2) is provided with a waist-shaped hole (26), the waist-shaped hole (26) is positioned at the bottom of one side of the side clamping plate (2) opposite to the upper die holder (1), the waist-shaped hole (26) is obliquely upwards distributed and is communicated with the guide groove structure (22), and the limiting piece is a connecting pin (27) for connecting the hook clamping piece (3).

14. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 10, wherein:

The limiting piece comprises a limiting pin (211), the limiting pin (211) is movably mounted in the T-shaped mounting hole (21), and the limiting pin (211) is in threaded connection with the hook clamping piece (3).

15. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 14, wherein:

the limiting piece further comprises a spring (212) sleeved on the outer side of the limiting pin (211).

16. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 1, wherein:

the clamping device further comprises a driving piece (4), and the driving piece (4) is used for driving the side clamping plate (2) to be selectively close to or far away from the upper die holder (1).

17. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 16, wherein:

the side clamping plate (2) is arranged on the front side of the upper die holder (1);

The driving piece (4) is arranged at the rear side of the upper die holder (1);

The movable end of the driving piece (4) penetrates through the upper die holder (1) and drives the side clamping plate (2) to be far away from or close to the upper die holder (1).

18. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 17, wherein:

The upper die holder (1) is provided with a guide rod, and the guide rod is arranged in parallel with the moving direction of the movable end of the driving piece (4) and is used for moving and guiding the side clamping plate (2) when the side clamping plate is close to or far from the upper die holder (1).

19. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 16, wherein:

The driving piece (4) is an air cylinder, an oil cylinder or an electric telescopic rod.

20. The clamping device for rapid disassembly and assembly of a bending upper die according to claim 1, wherein:

the driving piece (4) is a feeding piece penetrating through the side clamping plate (2).