CN212704049U

CN212704049U - Bending machine

Info

Publication number: CN212704049U
Application number: CN202021497933.3U
Authority: CN
Inventors: 潘小龙; 张永丽; 全东东
Original assignee: Shaanxi Bowei Industrial Co ltd
Current assignee: Shaanxi Bowei Industrial Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-03-16
Anticipated expiration: 2030-07-25

Abstract

The application relates to a bending machine, relates to the technical field of bending equipment, and aims to solve the problem that bending pressing knives are inconvenient to replace in the related technology. The bending machine comprises a bending machine body, an upper die base is arranged on the bending machine body, a bending pressing cutter is installed on the upper die base, the upper die base comprises a mounting plate and a plurality of movable plates arranged at intervals along the length direction of the mounting plate, the movable plates are arranged on one side of the mounting plate and connected onto the mounting plate through a connecting mechanism, the connecting mechanism comprises a guide pillar, a first spring and a locking assembly, one end of the guide pillar is fixedly connected onto the side wall of the mounting plate, the other end of the guide pillar penetrates through the movable plates, the first spring is arranged between the mounting plate and the movable plates, the movable plates tend to move close to one side of. This application can carry out quick replacement to the tucking tool, and it is little to have intensity of labour, changes efficient advantage.

Description

Bending machine

Technical Field

The application relates to the technical field of bending equipment, in particular to a bending machine.

Background

The power distribution cabinet is the final-stage equipment of a power distribution system, a metal cabinet is usually used for a cabinet of the power distribution cabinet, the metal cabinet is generally manufactured by shearing, bending, welding and the like of a metal plate through mechanical equipment to enable the metal plate to generate plastic deformation to form the shape and the size of a box body, and the bending of the metal plate is usually processed through a bending machine.

Chinese patent with application number CN201920951598.0 discloses a bender, including the bender body, be fixed in the die of bending on the bender body, slide and set up the gliding drive assembly of the sword of bending pressing and the drive of bending pressing on the bender body, the mould groove has been seted up on the bender body, the die of bending inlays and adorns in the mould inslot, the size of bending die lower extreme width direction is greater than its upper end's size. When the bending machine is used, a proper bending press knife and a proper bending female die are selected, then the bending press knife is inserted into a mounting groove which is used for mounting the bending press knife on a bending machine body, the bending female die is inserted into a die groove along the length direction of the die groove, then a plate to be processed is placed on the bending female die, and the bending press knife on the bending body is driven to move towards the bending female die so as to bend the plate.

According to the related technology, the bending pressing knife is arranged on the bending machine body in a sliding mode, large friction force needs to be overcome when the bending pressing knife is replaced, and the bending pressing knife is high in labor intensity and inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

In order to improve the inconvenient problem of the broach change of bending among the correlation technique, this application provides a bender.

The application provides a bender adopts following technical scheme:

the utility model provides a bending machine, includes the bender body, be provided with the upper die base on the bender body, install the die-pressing sword of bending on the upper die base, its characterized in that, the upper die base includes mounting panel and a plurality of edges the fly leaf that mounting panel length direction interval set up, the fly leaf set up in mounting panel one side, just the fly leaf pass through coupling mechanism install in on the mounting panel, coupling mechanism includes guide pillar, first spring and locking Assembly, guide pillar one end fixed connection in on the mounting panel lateral wall, the other end runs through the fly leaf setting, first spring sets up between mounting panel and fly leaf, just the fly leaf has the trend of being close to mounting panel one side motion, locking Assembly set up in the guide pillar passes fly leaf one side.

By adopting the technical scheme, when the bending pressing knife is replaced by the bending machine, the bending pressing knife on the bending machine is firstly detached, and when the bending pressing knife is detached, the locking assembly is adjusted to move towards the direction away from the movable plate, so that force is applied to the bending pressing knife, the bending pressing knife is supported and applied to the movable plate, the movable plate overcomes the spring tension to move towards the direction away from the mounting plate for a proper distance, the bending pressing knife is taken down, and the detachment of the original bending pressing knife is completed; then, a bending pressing knife to be installed is replaced, during installation, the bending pressing knife is moved, one side, close to the upper die base, of the bending pressing knife corresponds to a gap between the installation plate and the movable plate, force is applied to the bending pressing knife, the bending pressing knife moves upwards, one side, close to the upper die base, of the bending pressing knife is inserted into the gap between the installation plate and the movable plate, force application to the bending pressing knife is stopped, the bending pressing knife is clamped between the installation plate and the movable plate under the action of a first spring, pre-clamping of the bending pressing knife is achieved, a locking assembly is adjusted, the locking assembly pushes the movable plate to move towards the direction close to the installation plate, the bending pressing knife is further fixed, and installation of; the upper die base of design, through fly leaf and coupling mechanism cooperation, the pressing tool centre gripping of will bending under the elastic force effect of first spring is between mounting panel and fly leaf, the elasticity of the pressing tool of realizing bending is tight in advance, later through locking Assembly, fix the fly leaf position, and then realize the locking of the pressing tool of bending, it can realize the dismouting to overcome first spring force in the change process, low in labor strength, the installation effectiveness is high, it is convenient to change, and directly install from the upper die base below fifty percent discount pressing tool of bending during the installation, need not extra installation space, the requirement is lower to bender locating position, the bender of being convenient for uses.

Preferably, the locking assembly comprises a nut and a pushing piece, the pushing piece is arranged on one side, close to the mounting plate, of the nut, one end, far away from the nut, of the pushing piece is abutted to the movable plate, and the guide pillar penetrates through the side wall on one side of the movable plate and is provided with threads matched with the nut.

By adopting the technical scheme, when the bending pressing knife is locked, the nut is screwed, moves towards the direction close to the movable plate and drives the pushing piece to be close to the movable plate, so that the pushing piece is abutted against the movable plate and pushes the movable plate to be continuously close to the mounting plate until the movable plate and the bending pressing knife are clamped between the pushing piece and the mounting plate, and the nut is screwed at the moment to complete the locking of the bending pressing knife; the locking assembly of design realizes the fixed to the fly leaf position through adjusting nut position, and then realizes the fixed to the sword of pressing of bending, is convenient for bend the dismantlement and the locking of sword.

Preferably, the tucking tool includes clamping part and tucking tool portion, the clamping part is close to the draw-in groove has been seted up on the lateral wall of fly leaf, the draw-in groove is followed mounting panel length direction sets up, the fly leaf corresponds on being close to the lateral wall of mounting panel one side the caulking groove has been seted up to the draw-in groove, be provided with the elasticity chucking spare in the caulking groove.

By adopting the technical scheme, in the process that the clamping part is inserted between the mounting plate and the movable plate, the clamping part is contacted with the elastic clamping piece and abuts against the elastic clamping piece, so that the elastic clamping piece is retracted into the caulking groove until the clamping part is completely inserted, the clamping groove and the caulking groove are opposite, the elastic clamping piece is reset and is embedded into the clamping groove of the clamping part, and the bending pressing knife is hung; the clamping groove and the elastic clamping piece are designed, the folding bending pressing knife is hung and matched with the connecting mechanism, the folding bending pressing knife is pre-fixed, and the bending pressing knife is convenient to mount.

Preferably, the elastic clamping piece comprises a clamping block and a second spring, the clamping block is embedded in the caulking groove, the second spring is arranged between the clamping block and the bottom wall of the caulking groove, the second spring can enable the clamping block to tend to move towards the direction far away from the bottom wall of the caulking groove, and the side wall of the clamping block close to the mounting plate is in smooth transition with the bottom wall of the clamping block.

By adopting the technical scheme, when the bending pressing knife abuts against the clamping block, the clamping block moves towards the bottom of the caulking groove, the clamping block extrudes the second spring, the second spring is compressed until the clamping block is completely pressed into the caulking groove, the clamping part of the bending pressing knife continues to move upwards until the clamping groove of the clamping part is aligned with the caulking groove, the abutting pressure on the clamping block disappears, and the clamping block extends into the clamping groove under the action of the restoring force of the second spring; the designed clamping block and the second spring are simple in structure and convenient to use, the pre-fixing strength of the bending pressing knife can be effectively improved, and the practicability is high; the side wall of the clamping block close to the mounting plate and the bottom wall of the clamping block are in smooth transition, so that the clamping block is conveniently pressed into the caulking groove by the bending pressing tool, and the mounting of the bending pressing tool is convenient.

Preferably, the side wall of the mounting plate, which is close to one side of the movable plate, is provided with a pushing assembly capable of pushing the movable plate to move in the direction away from the mounting plate.

Through adopting above-mentioned technical scheme, the subassembly is pushed away in supporting of design, can promote the fly leaf to keeping away from the motion of mounting panel direction, enlarges the interval between fly leaf and the mounting panel to through the joint between mounting panel and fly leaf, carry out assistance-localization real-time to the fly leaf, the dismantlement of the pressing sword of being convenient for bend.

Preferably, the pushing assembly comprises a sliding block and a pushing block arranged on one side, far away from the mounting plate, of the sliding block, a sliding groove for the sliding block to slide is formed in the side wall, close to the movable plate, of the mounting plate, the sliding groove comprises a vertical section and a horizontal section, and the upper end of the vertical section is communicated with the horizontal section.

By adopting the technical scheme, when the bending press knife is disassembled, the nut is screwed to drive the pushing piece to move towards the direction far away from the movable plate, the sliding block is moved to drive the pushing block to be pushed into the gap between the mounting plate and the movable plate, the movable plate is temporarily positioned, force is applied to the bending press knife to enable the bending press knife to move towards the direction close to the mounting plate until the clamping block is separated from the clamping groove, the bending press knife is moved downwards to be far away from the upper die base to complete disassembly, then the sliding block is moved to drive the pushing block to slide into the horizontal section along the vertical section, and the movable plate moves towards the direction close to the mounting plate; the sliding groove, the sliding block and the abutting block are arranged, the mounting plate is positioned in an auxiliary mode, the distance between the movable plate and the mounting plate is enlarged, and the bending pressing knife is convenient to disassemble.

Preferably, the side wall of the pushing block far away from the mounting plate is in smooth transition with the bottom wall of the pushing block.

Through adopting above-mentioned technical scheme, support the lateral wall and the diapire smooth transition that the mounting panel was kept away from to the ejector pad, be convenient for support the ejector pad and support and go into between mounting panel and the fly leaf, conveniently support the ejector pad and use.

Preferably, a lower die holder is arranged on the bending machine body, a bending female die is arranged on the lower die holder, a mounting boss is arranged on the bending female die, and a mounting groove matched with the mounting boss is formed in the lower die holder.

By adopting the technical scheme, the installation groove and the installation boss are designed, so that the bending female die can be conveniently installed and positioned, the concave-convex corresponding multidirectional limiting is realized, the positioning precision of the bending female die is improved, and the bending female die is conveniently matched with the bending press cutter.

Preferably, a fastening bolt is arranged on the lower die base, and the mounting boss is abutted against the side wall of the mounting groove through the fastening bolt.

Through adopting above-mentioned technical scheme, the fastening bolt of design for the mounting boss chucking is in the mounting groove, and through adjusting fastening bolt, fastening bolt passes the die holder butt on the mounting boss lateral wall, and promotes the mounting boss opposite side and supports and press on the mounting groove lateral wall, consolidates the installation of the die of bending, further improves the installation accuracy of the die of bending, and the die of being convenient for bend is adjusted well with the sword of pressing of bending.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the bending press tool is clamped between the mounting plate and the movable plate under the action of the elastic force of the first spring through the matching of the designed upper die base, the movable plate and the connecting mechanism, so that the elastic pre-clamping of the bending press tool is realized, then the position of the movable plate is fixed through the locking assembly, and further the locking of the bending press tool is realized, the disassembly and the assembly can be realized by overcoming the elastic force of the first spring in the replacement process, the labor intensity is low, the mounting efficiency is high, the replacement is convenient, the bending press tool is directly mounted from the lower part of the upper die base during the mounting, no additional mounting space is needed, the requirement on the placement position of the bending machine is low, and the bending;

2. the elastic clamping piece is arranged in the caulking groove and comprises the clamping block and the second spring, so that the structure is simple, the use is convenient, the pre-fixing strength of the bending pressing knife can be effectively improved, and the practicability is high; the side wall of the fixture block close to the mounting plate is in smooth transition with the bottom wall of the fixture block, so that the fixture block is conveniently pressed into the caulking groove by the bending pressing tool, and the mounting of the bending pressing tool is convenient;

3. through the fastening bolt who designs for the mounting boss chucking is in the mounting groove, and through adjusting fastening bolt, fastening bolt passes the die holder butt on the mounting boss lateral wall, and promotes the mounting boss opposite side and supports to press on the mounting groove lateral wall, consolidates the installation of the die of bending, further improves the installation accuracy of the die of bending, and the die of being convenient for to bend is adjusted well with the sword of pressing of bending.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an exploded view of the upper die base according to the embodiment of the present application.

Fig. 3 is an exploded view of a movable plate according to an embodiment of the present disclosure.

FIG. 4 is a side view of the lower die holder and the bending die of the embodiment of the present application.

Description of reference numerals: 1. a bending machine body; 2. an upper die holder; 21. mounting a plate; 211. a pushing component; 2111. a slider; 2112. pushing the block; 212. a chute; 2121. a vertical section; 2122. a horizontal segment; 22. a connecting mechanism; 221. a guide post; 222. a first spring; 223. a locking assembly; 2231. a nut; 2232. pushing the piece; 23. a movable plate; 231. caulking grooves; 232. an elastic retainer; 2321. a clamping block; 2322. a second spring; 3. a lower die holder; 31. installing a groove; 32. fastening a bolt; 4. bending a pressing cutter; 41. a clamping portion; 42. a cutter pressing part; 43. a card slot; 5. bending the female die; 51. and (5) mounting a boss.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses panel beating cornering machine.

Referring to fig. 1, the bending machine comprises a bending machine body 1, a hydraulic cylinder is fixed to a bolt in the bending machine body 1, a piston rod of the hydraulic cylinder is arranged in the vertical direction, an upper die base 2 is arranged at the end portion of the piston rod of the hydraulic cylinder, a lower die base 3 is arranged on the bending machine body 1 under the upper die base 2, a bending press knife 4 is installed on the upper die base 2, and a bending die 5 is installed on the lower die base 3.

Referring to fig. 1 and 2, the bending press blade 4 includes a clamping portion 41 and a press blade portion 42, a clamping groove 43 is formed on a side wall of the clamping portion 41, and the clamping groove 43 is arranged along a length direction of the bending machine body 1.

Referring to fig. 2, the upper die base 2 includes a mounting plate 21, a plurality of movable plates 23 arranged at intervals along the length direction of the mounting plate 21 on one side of the mounting plate 21, and a connecting mechanism 22 connecting the mounting plate 21 and the movable plates 23, wherein the top wall of the mounting plate 21 is connected with the piston rod of the hydraulic cylinder by welding, and the side wall of the movable plate 23 close to the mounting plate 21 is in smooth transition with the bottom wall of the movable plate 23; the connecting mechanism 22 comprises a guide post 221, a first spring 222 and a locking assembly 223, the guide post 221 is welded on the side wall of the mounting plate 21 close to the movable plate 23, the axial direction of the guide post 221 is perpendicular to the mounting plate 21, one end of the guide post 221, far away from the mounting plate 21, penetrates through the movable plate 23, the first spring 222 is sleeved on the guide post 221, one end of the first spring 222 is welded on the mounting plate 21, the other end of the first spring is welded on the movable plate 23, and the movable plate 23 has a tendency of moving towards the direction close to the; the locking assembly 223 includes a nut 2231 and an annular pushing member 2232, the nut 2231 is disposed on one side of the guide post 221 that passes through the movable plate 23, the pushing member 2232 is welded to a side wall of the nut 2231 that is close to the mounting plate 21, and a thread that is engaged with the nut 2231 is disposed on a side wall of the guide post 221 that passes through one side of the movable plate 23.

Referring to fig. 2 and 3, a caulking groove 231 is formed in the side wall of the movable plate 23 close to the mounting plate 21 and corresponding to the locking groove 43, and an elastic clamping member 232 is arranged in the caulking groove 231; the elastic clamping piece 232 comprises a clamping block 2321 and a second spring 2322, the clamping block 2321 is embedded in the embedding groove 231, a closing-in baffle is welded at the opening of the embedding groove 231, a limiting boss is integrally arranged on one side of the clamping block 2321 close to the bottom of the embedding groove 231, the side wall of the clamping block 2321 close to the mounting plate 21 is in smooth transition with the bottom wall of the clamping block 2321, the second spring 2322 is arranged between the clamping block 2321 and the bottom wall of the embedding groove 231, one end of the second spring 2322 is hung on the side wall of the clamping block 2321 close to the bottom wall of the embedding groove 231, the other end of the second spring 2322 is hung on the bottom wall of the embedding groove 231, and the second spring 2322 is always in a compression state.

Referring to fig. 2, in order to adjust the distance between the movable plate 23 and the mounting plate 21, a pushing assembly 211 is disposed on a side wall of the mounting plate 21 close to the movable plate 23; the pushing component 211 comprises a sliding block 2111 and a pushing block 2112 integrally arranged with the sliding block 2111, the pushing block 2112 is arranged on one side of the sliding block 2111 far away from the mounting plate 21, and the side wall of the pushing block 2112 far away from the mounting plate 21 is smoothly transited with the bottom wall of the pushing block 2112; the side wall of the mounting plate 21 close to the movable plate 23 is provided with a sliding groove 212 for the sliding block 2111 to slide, the sliding groove 212 includes a vertical section 2121 and a horizontal section 2122, and the upper end of the vertical section 2121 is communicated with the horizontal section 2122.

Referring to fig. 4, a bending groove matched with the bending press knife 4 is formed in the top wall of the bending female die 5, and an installation boss 51 is integrally formed in the bottom wall of the bending female die 5. Mounting groove 31 has been seted up on the roof of die holder 3, and bending die 5 is placed on the die holder, and installation boss 51 and the cooperation of pegging graft of mounting groove 31, set up the screw hole that communicates with mounting groove 31 on the die holder 3, and threaded connection has fastening bolt 32 in the screw hole, and fastening bolt 32 is with the chucking of installation boss 51 in mounting groove 31.

The implementation principle of the embodiment is as follows: when the bending press knife 4 is replaced in the bending machine, firstly, the bending press knife 4 on the bending machine is detached, when the bending press knife 4 is detached, the nut 2231 is screwed, the nut 2231 drives the pushing piece 2232 to move towards the direction away from the movable plate 23, the sliding block 2111 is moved, so that the sliding block 2111 drives the pushing block 2112 to be abutted between the mounting plate 21 and the movable plate 23, the movable plate 23 is pushed away from the mounting plate 21, and the movable plate 23 is temporarily positioned; applying force to the bending press knife 4 to enable the bending press knife 4 to move towards the direction close to the mounting plate 21 until the fixture block 2321 is separated from the clamping groove 43, and moving the bending press knife 4 downwards to be far away from the upper die holder 2 to finish the disassembly of the bending press knife 4; the slider 2111 is moved, so that the slider 2111 drives the abutting block 2112 to slide into the horizontal section 2122 along the vertical section 2121, the movable plate 23 is close to the mounting plate 21 under the action of the tension of the first spring 222, then the bending press blade 4 to be mounted is moved, so that one side of the bending press blade 4, which is close to the upper die holder 2, corresponds to the gap between the mounting plate 21 and the movable plate 23, force is applied to the bending press blade 4, the clamping portion 41 is inserted between the mounting plate 21 and the movable plate 23, in the process that the clamping portion 41 is inserted between the mounting plate 21 and the movable plate 23, the clamping portion 41 abuts against the fixture block 2321, the fixture block 2321 is pushed to move towards the direction close to the bottom of the caulking groove 231, the fixture block 2321 presses the second spring 2322, the second spring 2322 is compressed until the fixture block 2321 is completely pressed into the caulking groove 231, the clamping portion 41 of the bending press blade 4 continues to move upwards until the clamping groove 43 of the clamping, under the action of the restoring force of the second spring 2322, the fixture block 2321 extends into the clamping groove 43 to hang the bending press knife 4; meanwhile, the movable plate 23 is clamped between the mounting plate 21 and the movable plate 23 by the elastic force of the first spring 222; stopping applying force to the bending pressing knife 4, screwing the nut 2231, moving the nut 2231 to a direction close to the movable plate 23, and driving the pushing piece 2232 to be close to the movable plate 23, so that the pushing piece 2232 abuts against the movable plate 23, and pushing the movable plate 23 to continue to be close to the mounting plate 21 until the movable plate 23 and the bending pressing knife 4 are clamped between the pushing piece 2232 and the mounting plate 21, and at this time, screwing the nut 2231, and completing replacement of the bending pressing knife 4.

When the bending female die 5 is replaced by the bending machine, the fastening bolt 32 of the lower die holder 3 is screwed, the fastening bolt 32 moves towards the direction far away from the lower die holder 3, the fastening bolt 32 is separated from the mounting boss 51, the bending female die 5 to be replaced is taken down, the bending female die 5 to be installed is placed on the lower die holder 3, the mounting boss 51 is inserted into the mounting groove 31, the fastening bolt 32 is screwed, the fastening bolt 32 moves towards the direction close to the lower die holder 3 until the fastening bolt 32 abuts against the mounting boss 51, and the bending female die 5 is replaced.

When the bending machine works, a plate to be processed is placed on the bending female die 5, the hydraulic cylinder on the bending machine body 1 is driven, the piston rod of the hydraulic cylinder extends out, the upper die base 2 drives the bending pressing knife 4 to be close to the bending female die 5, and the plate is bent.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The bending machine comprises a bending machine body (1), wherein an upper die base (2) is arranged on the bending machine body (1), and a bending press knife (4) is installed on the upper die base (2), and is characterized in that the upper die base (2) comprises an installation plate (21) and a plurality of movable plates (23) which are arranged at intervals along the length direction of the installation plate (21), the movable plates (23) are arranged on one side of the installation plate (21), the movable plates (23) are connected to the installation plate (21) through connecting mechanisms (22), each connecting mechanism (22) comprises a guide pillar (221), a first spring (222) and a locking assembly (223), one end of each guide pillar (221) is fixedly connected to the side wall of the installation plate (21), the other end of each guide pillar penetrates through the corresponding movable plate (23), and the first spring (222) is arranged between the installation plate (21) and the movable plates (23), and the movable plate (23) tends to move towards one side close to the mounting plate (21), and the locking assembly (223) is arranged at one side of the guide post (221) penetrating through the movable plate (23).

2. The bending machine according to claim 1, wherein the locking assembly (223) comprises a nut (2231) and an ejector (2232), the ejector (2232) is disposed on one side of the nut (2231) close to the mounting plate (21), one end of the ejector (2232) far away from the nut (2231) abuts against the movable plate (23), and the guide post (221) is provided with a thread matching with the nut (2231) through a side wall of one side of the movable plate (23).

3. The bending machine according to claim 1, wherein the bending pressing knife (4) comprises a clamping portion (41) and a pressing knife portion (42), a clamping groove (43) is formed in a side wall, close to the movable plate (23), of the clamping portion (41), the clamping groove (43) is arranged along the length direction of the mounting plate (21), a caulking groove (231) is formed in a side wall, close to the mounting plate (21), of the movable plate (23) and corresponds to the clamping groove (43), and an elastic clamping piece (232) is arranged in the caulking groove (231).

4. The bending machine according to claim 3, wherein the elastic clamping piece (232) comprises a clamping block (2321) and a second spring (2322), the clamping block (2321) is embedded in the embedding groove (231), the second spring (2322) is arranged between the clamping block (2321) and the bottom wall of the embedding groove (231), the second spring (2322) enables the clamping block (2321) to tend to move in a direction away from the bottom wall of the embedding groove (231), and the side wall, close to the mounting plate (21), of the clamping block (2321) is in smooth transition with the bottom wall of the clamping block (2321).

5. The bending machine according to claim 4, wherein a pushing component (211) capable of pushing the movable plate (23) to move away from the mounting plate (21) is arranged on a side wall of the mounting plate (21) on a side close to the movable plate (23).

6. The bending machine according to claim 5, wherein the pushing assembly (211) comprises a sliding block (2111) and a pushing block (2112) arranged on one side of the sliding block (2111) far away from the mounting plate (21), a sliding groove (212) for the sliding block (2111) to slide is formed in the side wall of the mounting plate (21) close to the movable plate (23), the sliding groove (212) comprises a vertical section (2121) and a horizontal section (2122), and the upper end of the vertical section (2121) is communicated with the horizontal section (2122).

7. The bending machine according to claim 6, wherein the side wall of the side of the push abutment block (2112) remote from the mounting plate (21) is in smooth transition with the bottom wall of the push abutment block (2112).

8. The bending machine according to claim 1, wherein a lower die holder (3) is arranged on the bending machine body (1), a bending female die (5) is arranged on the lower die holder (3), an installation boss (51) is arranged on the bending female die (5), and an installation groove (31) matched with the installation boss (51) is formed in the lower die holder (3).

9. The bending machine according to claim 8, wherein a fastening bolt (32) is arranged on the lower die holder (3), and the mounting boss (51) abuts against the side wall of the mounting groove (31) through the fastening bolt (32).