Bending machine

Abstract

A bending machine relates to the technical field of steel plate bending processing equipment and comprises two stand columns which are oppositely arranged, and blanking holes are formed in the stand columns. The upper cross beam is fixedly arranged between the two stand columns, and a plurality of oil cylinders are installed on the upper cross beam. The pressing head is located below the upper cross beam and fixedly connected with the oil cylinder, and an upper pressing die device is installed at the bottom of the pressing head. The clamping and guiding device comprises a clamping mechanism and a guiding seat, and the guiding seat is matched with the clamping mechanism; the lower cross beam is fixedly arranged between the two stand columns, the lower cross beam is provided with a lower pressing die device, the lower pressing die device is matched with the upper pressing die device, and the discharging hole is formed in the outer side of the lower pressing die device; the translation device penetrates through the two discharging holes and is fixedly arranged on the two stand columns. According to the utility model, the vertical movement of the pressure head can be clamped and guided, the pressure head is prevented from deviating, and the bending precision of a steel plate is improved; and meanwhile, formed workpieces can be directly pushed for blanking, the cost is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate bending processing equipment, in particular to a bending machine. Background Art

[0002] The manufacturing process of welded steel pipes in the prior art usually involves bending and curling a steel plate into a cylindrical shape and then welding the two edges of the steel plate to obtain a steel pipe. The steel plate bending or curling process usually uses a bending machine to repeatedly press and bend the steel plate to bend the steel plate into a tubular shape. First, a bending machine is used to bend one half of the steel plate to form a C-shaped structure, and then the other half of the steel plate is bent by the bending machine to form another C-shaped structure. The two C-shaped structures are arranged opposite to each other to form a cylindrical workpiece with an opening. After the cylindrical workpiece is removed from the bending machine, the opening is manually spot welded and butt welded to form a complete steel pipe.

[0003] In the existing process of applying pressure to bend the steel plate by a bending machine, multiple cylinders installed on the upper beam drive the same pressure head to move downward. In this process, since the pressure head is driven by the cylinder, its movement path is easily affected by the cylinder. When the cylinder applies uneven force or the pressure is insufficient, it is easy to cause the pressure head to deviate, resulting in different position intervals or pressures on the steel plate, affecting the bending angle of the steel plate, and then affecting the bending accuracy of the steel plate, requiring manual rework and adjustment, reducing production efficiency.

[0004] Moreover, after the traditional bending machine bends the steel plate into shape, it needs the help of other machines to remove the formed cylindrical workpiece from the bending machine, which requires cooperation with other machines to complete. Moreover, it occupies the working area around the bending machine, increases production costs and reduces production efficiency. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is: to provide a bending machine that can clamp and guide the vertical movement of the pressure head to prevent the pressure head from deviating and improve the bending accuracy of the steel plate; at the same time, the formed cylindrical workpiece can be directly pushed for unloading without the help of other machines, thereby reducing costs and improving efficiency.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A bending machine, comprising:

[0008] Two oppositely arranged upright posts, each upright post having a material discharge hole;

[0009] An upper crossbeam is fixedly arranged between the two upright posts, and a plurality of oil cylinders are installed on the upper crossbeam along its length direction, and the driving end of the oil cylinder is arranged below the upper crossbeam;

[0010] A pressure head, which is arranged in the same direction as the upper cross beam and is located below the upper cross beam, and is fixedly connected to the driving end of the oil cylinder. The oil cylinder is used to drive the pressure head to reciprocate in the vertical direction, and an upper die device is installed at the bottom of the pressure head;

[0011] A clamping guide device, comprising a clamping mechanism fixed to the bottom of the upper crossbeam and a guide seat fixed to the top of the pressure head, wherein the guide seat is adapted to the clamping mechanism and is used to limit the reciprocating movement of the pressure head in the vertical direction;

[0012] A lower crossbeam is fixedly arranged between the two uprights and arranged in the same direction as the upper crossbeam. The lower crossbeam is arranged below the pressure head. A lower die device is installed on the top of the lower crossbeam. The lower die device is adapted to the upper die device and is used to bend the steel plate. The feed hole is arranged on the outer side of the lower die device.

[0013] A translation device is fixed on the two columns through the two feeding holes, and is used to move the formed workpiece after the steel plate is bent out of one of the feeding holes.

[0014] Preferably, the pressing head comprises a vertically arranged pressing plate, and an upper pressing die device is installed at the bottom of the pressing plate.

[0015] Preferably, the upper die device comprises a plurality of upper pressing members arranged in a horizontal direction, and the bottom ends of the upper pressing members are convexly arranged in an arc shape;

[0016] A limiting block is convexly provided on the top of the upper pressing piece, and a limiting groove matched with the limiting block is concavely provided on the bottom of the pressing plate.

[0017] Preferably, the clamping mechanism comprises a guide mounting seat fixedly mounted on the bottom of the upper cross beam, and two guide mounting plates arranged opposite to each other are fixedly mounted on the guide mounting seat;

[0018] The guide mounting plate is provided with a guide mounting plate inclined surface, at least one adjustment plate is adjustably installed on the guide mounting plate, the two adjustment plates arranged on the two guide mounting plates are arranged opposite to each other, and the adjustment plate is provided with an adjustment plate inclined surface adapted to the guide mounting plate inclined surface.

[0019] Preferably, copper plates are installed on the opposite surfaces of the two adjustment plates;

[0020] The copper plate is provided with a concave lubrication groove, the adjustment plate is provided with an oil filling hole, the lubrication groove is communicated with the oil filling hole, and the oil filling hole is communicated with the outside through an oil passage opened in the adjustment plate.

[0021] Preferably, the lower die device comprises two lower die assemblies arranged in parallel, and the two lower die assemblies are symmetrically arranged on the outer sides of the upper die device;

[0022] The lower die assembly is detachably mounted on the top of the lower cross beam, the spacing between the two lower die assemblies is adjustable, an adjustment gap is provided between the lower die assembly and the lower cross beam, a support assembly is accommodated in the adjustment gap, and the support assembly detachably connects the lower die assembly to the lower cross beam; the width of the lower die assembly is greater than the width of the support assembly.

[0023] Preferably, the lower pressing die assembly comprises a plurality of lower pressing members sequentially arranged along the length direction of the lower cross beam, and the top and bottom ends of the lower pressing members are both convex outwards and arranged in an arc shape.

[0024] Preferably, the support assembly includes a plurality of shims arranged along the length direction of the lower cross beam, and there is a spacing between the shims;

[0025] Two mutually parallel limit strips are arranged on the lower cross beam along its length direction. The limit strip is arranged on the outer side of the washer and forms the adjustment gap with the lower pressure piece. The adjusting bolt passes through the washer to fix the limit strip to the lower pressure piece.

[0026] Preferably, the translation device comprises a driving sprocket, a driven sprocket and a feeding chain wound between the driving sprocket and the driven sprocket;

[0027] The driving sprocket is installed on the outer side of one of the pillars, and the driving sprocket is drivingly connected to the power member;

[0028] The driven sprocket is mounted on the outer side of another column;

[0029] The material unloading chain is arranged between the two lower die assemblies, the height of the material unloading chain is lower than the height of the lower die assemblies, and a translation push plate is installed on the material unloading chain;

[0030] In the bent state, the translation push plate is located outside the lower die assembly.

[0031] Preferably, the oil cylinder comprises a pressing oil cylinder and a lifting oil cylinder.

[0032] After adopting the above technical solution, the beneficial effects of the utility model are:

[0033] In the utility model, two columns, an upper crossbeam, a pressure head, a clamping guide device, a lower crossbeam and a translation device are provided, wherein the upper crossbeam and the lower crossbeam are fixedly connected to the two columns, an oil cylinder is installed on the upper crossbeam, and the oil cylinder can drive the pressure head to reciprocate in the vertical direction, and an upper die device is installed at the bottom of the pressure head, and during the movement of the pressure head, the upper die device can be driven to move together; the clamping guide device includes a clamping mechanism and a guide seat, and during the movement of the pressure head, the clamping mechanism and the guide seat are adapted to limit the pressure head from driving the upper die device to reciprocate along the vertical direction. The reciprocating movement in the vertical direction can adjust the offset distance of the pressure head, adjust the moving direction of the pressure head, and prevent the pressure head from deviating, thereby improving the bending accuracy of the bending machine and improving the production efficiency; a lower die device is installed on the lower crossbeam, and during the downward movement of the upper die device, the lower die device cooperates with the upper die device to bend the steel plate; the formed workpiece is directly moved out through one of the lower material holes by the translation device without the help of other machines, thereby improving production efficiency and reducing costs; it also reduces the occupied space and has a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Figure 1 It is a structural schematic diagram of a bending machine according to an embodiment of the utility model;

[0036] Figure 2 yes Figure 1 The main view;

[0037] Figure 3 yes Figure 1 Schematic diagram of the structure after removing the columns;

[0038] Figure 4 yes Figure 3 A magnified view of part A;

[0039] Figure 5 yes Figure 3 A magnified view of part B;

[0040] Figure 6 yes Figure 3 Side view of

[0041] Figure 7 yes Figure 6 Enlarged view of part C;

[0042] Figure 8 It is an exploded view of the upper crossbeam and the pressure head in the embodiment of the utility model;

[0043] Fig. 9 It is a schematic diagram of the positions of the guide mounting seat, the guide mounting plate, the adjustment plate, and the copper plate in the embodiment of the utility model;

[0044] In the figure:

[0045] 1. Column; 11. Feeding hole;

[0046] 2. Upper beam;

[0047] 3. Oil cylinder; 31. Pressing oil cylinder; 32. Lifting oil cylinder;

[0048] 4. Pressing head; 41. Pressing plate; 42. Limiting groove;

[0049] 5. Upper die device; 51. Upper pressing piece; 511. Limiting block;

[0050] 6. Clamping guide device; 61. Clamping mechanism; 611. Guide mounting seat; 612. Guide mounting plate; 613. Guide mounting plate inclined surface; 614. Adjustment plate; 615. Adjustment plate inclined surface; 616. Oil filling hole; 62. Guide seat; 63. Copper plate; 631. Lubrication groove;

[0051] 7. Lower beam;

[0052] 8. Lower die device; 81. Lower die assembly; 811. Lower pressing piece; 82. Adjusting gap; 83. Support assembly; 831. Washer; 84. Limiting strip; 85. Adjusting bolt;

[0053] 9. Translation device; 91. Driving sprocket; 92. Driven sprocket; 93. Unloading chain; 94. Power part; 95. Translation push plate;

[0054] Figure 2 The solid arrow in the middle represents the moving direction of the pressure head. Fig. 9 The dashed arrow in the middle represents the moving direction of the adjustment plate. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0056] like Figures 1 to 9As shown in the figure, the utility model comprises two oppositely arranged upright posts 1, and a material discharge hole 11 is provided on the upright posts 1; an upper crossbeam 2 is fixedly arranged between the two upright posts 1, and a plurality of oil cylinders 3 are installed on the upper crossbeam 2 along its length direction, and the driving end of the oil cylinder 3 is arranged below the upper crossbeam 2; a pressure head 4 is arranged in the same direction as the upper crossbeam 2 and is located below the upper crossbeam 2, and the pressure head 4 is fixedly connected to the driving end of the oil cylinder 3, and the oil cylinder 3 is used to drive the pressure head 4 to reciprocate in the vertical direction, and an upper die device 5 is installed at the bottom of the pressure head 4; the oil cylinder 3 comprises a lower pressure oil cylinder 31 And lifting cylinder 32, wherein the pressing cylinder 31 is used to drive the ram 4 to move downward, driving the upper die device 5 to move downward to bend the steel plate. After bending once, the ram 4 is lifted and moved upward by the lifting cylinder 32, driving the upper die device 5 to move upward. The downward and upward movements are performed by different cylinders 3 respectively in order to speed up the lifting efficiency of the ram, changing the traditional method of using the same cylinder for downward and upward movement. When moving upward, the pressing cylinder 31 does not do work, and is driven to move upward by the lifting cylinder 32, and the upward movement speed is fast.

[0057] The clamping guide device 6 includes a clamping mechanism 61 fixed at the bottom of the upper crossbeam 2 and a guide seat 62 fixed at the top of the ram 4. The guide seat 62 is adapted to the clamping mechanism 61 and is used to limit the reciprocating movement of the ram 4 in the vertical direction. During the movement of the ram 4, the clamping mechanism 61 and the guide seat 62 are adapted to limit the ram 4 from driving the upper die device 5 to reciprocate in the vertical direction, adjust the offset distance of the ram 4, adjust the moving direction of the ram 4, and prevent the ram 4 from deviating, thereby improving the bending accuracy of the bending machine and improving production efficiency.

[0058] The lower crossbeam 7 is fixed between the two columns 1 and arranged in the same direction as the upper crossbeam 2. The lower crossbeam 7 is arranged below the pressure head 4. A lower die device 8 is installed on the top of the lower crossbeam 7. The lower die device 8 is adapted to the upper die device 5 and is used to bend the steel plate. The feed hole 11 is arranged on the outside of the lower die device 8; the translation device 9 passes through the two feed holes 11 and is fixed on the two columns 1. The translation device 9 is used to move the formed workpiece after the steel plate is bent out of one of the feed holes 11 without the help of other machines. Therefore, the production efficiency is improved and the cost is reduced; it also reduces the occupied space and has a compact structure.

[0059] In the utility model, the pressing head 4 includes a vertically arranged pressing plate 41, and an upper pressing die device 5 is installed at the bottom of the pressing plate 41. The upper pressing die device 5 includes a plurality of upper pressing members 51 arranged in the horizontal direction, and the bottom end of the upper pressing member 51 is convexly arranged in an arc shape; a limiting block 511 is convexly arranged on the top of the upper pressing member 51, and a limiting groove 42 adapted to the limiting block 511 is concavely arranged at the bottom of the pressing plate 41. In the assembled state, the limiting block 511 is clamped in the groove of the limiting groove 42 to prevent the upper pressing member 51 from being offset, thereby preventing the bending accuracy of the steel plate from being affected and improving the bending effect.

[0060] The clamping mechanism 61 includes a guide mounting seat 611 fixed to the bottom of the upper cross beam 2, and two oppositely arranged guide mounting plates 612 are fixed on the guide mounting seat 611; a guide mounting plate inclined surface 613 is provided on the guide mounting plate 612, and at least one adjustment plate 614 is adjustably installed on the guide mounting plate 612, and the two adjustment plates 614 arranged on the two guide mounting plates 612 are arranged oppositely, and an adjustment plate inclined surface 615 adapted to the guide mounting plate inclined surface 613 is provided on the adjustment plate 614.

[0061] When the adjusting plate 614 slides along the inclined surface 613 of the guide mounting plate, the two adjusting plates 614 arranged on the two guide mounting plates 612, one of the adjusting plates 614 approaches or moves away from the other adjusting plate 614, or the two adjusting plates 614 approach or move away from each other, can clamp and guide the guide seat 62 located between the two adjusting plates 614, and the guide seat 62 is fixedly connected to the pressure head 4, thereby clamping and guiding the pressure head 4, and the pressure head 4 can only move between the two adjusting plates 614, limiting the moving direction of the pressure head 4, and preventing the pressure head 4 from deviating, and by adjusting the positions of the two adjusting plates 614, the downward movement path of the pressure head 4 can be fine-tuned, thereby improving the bending accuracy of the bending machine, improving the production efficiency, and reducing the production cost.

[0062] Among them, copper plates 63 are installed on the opposite surfaces of the two adjustment plates 614; a lubrication groove 631 is recessed on the copper plate 63, and an oil filling hole 616 is opened on the adjustment plate 614. The lubrication groove 631 is connected to the oil filling hole 616, and the oil filling hole 616 is connected to the outside through an oil channel opened in the adjustment plate 614.

[0063] During the movement of the ram 4, the copper plate 63 abuts against the guide seat 62, which can prevent direct friction between the ram 4 and the adjusting plate 614, thereby increasing the service life of the ram 4 and the adjusting plate 614; at the same time, during the process of clamping and guiding the ram 4, the copper plate 63 and the adjusting plate 614 will not move relative to each other. Therefore, the positions of the oil filling hole 616 and the lubrication groove 631 will not change relative to each other. The external lubricating oil can enter the lubrication groove 631 through the oil channel and the oil filling hole 616 to lubricate the guide seat 62 abutting against the copper plate 63, thereby reducing the friction between the ram 4 and the copper plate 63 when it moves, reducing the movement resistance, and improving the movement effect.

[0064] In the utility model, the lower die device 8 includes two lower die assemblies 81 arranged in parallel, and the two lower die assemblies 81 are symmetrically arranged on the outside of the upper die device 5; the lower die assembly 81 is detachably installed on the top of the lower cross beam 7, and the spacing between the two lower die assemblies 81 is adjustable. An adjustment gap 82 is provided between the lower die assembly 81 and the lower cross beam 7, and a support assembly 83 is accommodated in the adjustment gap 82. The support assembly 83 detachably connects the lower die assembly 81 with the lower cross beam 7; the width of the lower die assembly 81 is greater than the width of the support assembly 83.

[0065] The lower pressing die assembly 81 includes a plurality of pressing members 811 arranged in sequence along the length direction of the lower cross beam 7. The top and bottom ends of the pressing members 811 are both convex outwardly and are set in an arc shape. The bottom end of the pressing member 811 is also set in an arc shape, so that when the pressing member 811 is installed, its top and bottom ends can both cooperate with the upper pressing die device 5, and there is no need to distinguish between the top and bottom ends, thereby improving the installation efficiency.

[0066] In the utility model, the support assembly 83 includes a plurality of shims 831 arranged along the length direction of the lower cross beam 7, and there is a spacing between the shims 831 to reduce material usage and reduce costs. The shims 831 support the lower pressure piece 811 along the width direction, wherein the shims 831 and the lower pressure piece 811 are also provided with at least one adjustment gasket (not shown in the figure), which is used to cooperate with the shims 831 to adjust the position of the lower pressure piece 811; the length of the shim 831 located on the outside of the connection between two adjacent lower pressure pieces 811 is greater than the length of other shims 831, that is, one shim 831 supports the connection between two adjacent lower pressure pieces 811 at the same time.

[0067] Two mutually parallel limit bars 84 are arranged on the lower cross beam 7 along its length direction. The limit bar 84 is arranged on the outer side of the washer 831 and forms an adjustment gap 82 with the lower pressure piece 811. The adjusting bolt 85 passes through the washer 831 to fix the limit bar 84 to the lower pressure piece 811.

[0068] In the utility model, the translation device 9 includes a driving sprocket 91, a driven sprocket 92 and a feeding chain 93 wound between the driving sprocket 91 and the driven sprocket 92; wherein the driving sprocket 91 is installed on the outside of a column 1, and the driving sprocket 91 is drivingly connected to the power member 94; the driven sprocket 92 is installed on the outside of the other column 1; the feeding chain 93 is arranged between the two lower die assemblies 81, and the height of the feeding chain 93 is lower than the height of the lower die assembly 81. When the upper die assembly 5 moves downward to bend the steel plate, the feeding chain 93 will not interfere with the steel plate, and will not affect the bending effect of the upper die assembly 5 and the two lower die assemblies 81. A translation push plate 95 is installed on the unloading chain 93. In the bending state, the translation push plate 95 is located on the outside of the lower die assembly 81. The translation push plate 95 will not interfere with the steel plate and will not affect the bending effect of the upper die device 5 and the two lower die assemblies 81. At the same time, the bent molded workpiece is pushed out of the lower material hole 11 by the unloading chain 93 to complete the unloading action.

[0069] When the utility model is used, the steel plate is first placed between the upper pressing piece 51 and the lower pressing piece 811, and then the lower pressing cylinder 31 drives the pressure head 4 to move downward, and the upper pressing piece 51 cooperates with the lower pressing piece 811 to bend the steel plate. After bending once, the lifting cylinder 32 drives the pressure head 4 to move upward for the next bending. During the reciprocating movement of the pressure head 4, the guide mounting plate inclined surface 613 cooperates with the adjustment plate inclined surface 615, and the adjustment plate 614 slides along the guide mounting plate inclined surface 613 to adjust the clamping effect of the adjustment plate 614 on the guide seat 62, and adjust the offset distance and offset strength of the pressure head 4 to ensure that the pressure head 4 moves in the vertical direction; after the bending of the steel plate is completed, the formed workpiece is a cylindrical workpiece with an opening, and the unloading chain 93 drives the translation push plate 95 to move, and the formed workpiece passes through the unloading hole 11, and is removed from the utility model to complete the unloading.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bending machine, characterized in that: include: Two oppositely arranged upright posts, each upright post having a material discharge hole; An upper crossbeam is fixedly arranged between the two upright posts, and a plurality of oil cylinders are installed on the upper crossbeam along its length direction, and the driving end of the oil cylinder is arranged below the upper crossbeam; A pressure head, which is arranged in the same direction as the upper cross beam and is located below the upper cross beam, and is fixedly connected to the driving end of the oil cylinder. The oil cylinder is used to drive the pressure head to reciprocate in the vertical direction, and an upper die device is installed at the bottom of the pressure head; A clamping guide device, comprising a clamping mechanism fixed to the bottom of the upper crossbeam and a guide seat fixed to the top of the pressure head, wherein the guide seat is adapted to the clamping mechanism and is used to limit the reciprocating movement of the pressure head in the vertical direction; A lower crossbeam is fixedly arranged between the two uprights and arranged in the same direction as the upper crossbeam. The lower crossbeam is arranged below the pressure head. A lower die device is installed on the top of the lower crossbeam. The lower die device is adapted to the upper die device and is used to bend the steel plate. The feed hole is arranged on the outer side of the lower die device. A translation device is fixed on the two columns through the two feeding holes, and is used to move the formed workpiece after the steel plate is bent out of one of the feeding holes.

2. The bending machine according to claim 1, characterized in that: The pressing head comprises a vertically arranged pressing plate, and an upper pressing die device is installed at the bottom of the pressing plate.

3. The bending machine according to claim 2, characterized in that: The upper die device comprises a plurality of upper pressing members arranged in a horizontal direction, and the bottom ends of the upper pressing members are convexly arranged in an arc shape; A limiting block is convexly provided on the top of the upper pressing piece, and a limiting groove matched with the limiting block is concavely provided on the bottom of the pressing plate.

4. The bending machine according to claim 1, characterized in that: The clamping mechanism comprises a guide mounting seat fixedly arranged at the bottom of the upper cross beam, and two guide mounting plates arranged opposite to each other are fixedly arranged on the guide mounting seat; The guide mounting plate is provided with a guide mounting plate inclined surface, at least one adjustment plate is adjustably installed on the guide mounting plate, the two adjustment plates arranged on the two guide mounting plates are arranged opposite to each other, and the adjustment plate is provided with an adjustment plate inclined surface adapted to the guide mounting plate inclined surface.

5. The bending machine according to claim 4, characterized in that: Copper plates are installed on the opposite surfaces of the two adjustment plates; The copper plate is provided with a concave lubrication groove, the adjustment plate is provided with an oil filling hole, the lubrication groove is communicated with the oil filling hole, and the oil filling hole is communicated with the outside through an oil passage opened in the adjustment plate.

6. The bending machine according to claim 1, characterized in that: The lower die device comprises two lower die assemblies arranged in parallel, and the two lower die assemblies are symmetrically arranged on the outer sides of the upper die device; The lower die assembly is detachably mounted on the top of the lower cross beam, the spacing between the two lower die assemblies is adjustable, an adjustment gap is provided between the lower die assembly and the lower cross beam, a support assembly is accommodated in the adjustment gap, and the support assembly detachably connects the lower die assembly to the lower cross beam; the width of the lower die assembly is greater than the width of the support assembly.

7. The bending machine according to claim 6, characterized in that: The lower pressing die assembly comprises a plurality of lower pressing pieces arranged in sequence along the length direction of the lower cross beam, and the top and bottom ends of the lower pressing pieces are both convex outwards and arranged in an arc shape.

8. The bending machine according to claim 7, characterized in that: The support assembly includes a plurality of washers arranged along the length direction of the lower cross beam, and there are intervals between the washers; Two mutually parallel limit strips are arranged on the lower cross beam along its length direction. The limit strip is arranged on the outer side of the washer and forms the adjustment gap with the lower pressure piece. The adjusting bolt passes through the washer to fix the limit strip to the lower pressure piece.

9. The bending machine according to claim 6, characterized in that: The translation device comprises a driving sprocket, a driven sprocket and a material removal chain wound between the driving sprocket and the driven sprocket; The driving sprocket is installed on the outer side of one of the pillars, and the driving sprocket is drivingly connected to the power member; The driven sprocket is mounted on the outer side of another column; The material unloading chain is arranged between the two lower die assemblies, the height of the material unloading chain is lower than the height of the lower die assemblies, and a translation push plate is installed on the material unloading chain; In the bent state, the translation push plate is located outside the lower die assembly.

10. The bending machine according to claim 1, characterized in that: The oil cylinder comprises a pressing oil cylinder and a lifting oil cylinder.

Images