Pressure applying device for bending machine

Abstract

A pressure applying device for a bending machine relates to the technical field of steel plate bending processing equipment and comprises an upper cross beam, a pressure head and a clamping guide device, a plurality of oil cylinders are mounted on the upper cross beam along the length direction of the upper cross beam, and driving ends of the oil cylinders are arranged below the upper cross beam; the pressing head and the upper cross beam are arranged in the same direction and located below the upper cross beam, the pressing head is fixedly connected with the driving end of the oil cylinder, and the oil cylinder is used for driving the pressing head to reciprocate in the vertical direction; the clamping and guiding device comprises a clamping mechanism fixedly arranged at the bottom of the upper cross beam and a guiding seat fixedly arranged at the top of the pressing head, and the guiding seat is matched with the clamping mechanism and used for limiting reciprocating motion of the pressing head in the vertical direction. The clamping and guiding device is arranged between the upper cross beam and the pressure head, so that the vertical movement of the pressure head can be clamped and guided, the pressure head is prevented from deviating, the bending precision of a steel plate is improved, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate bending processing equipment, in particular to a pressure device for 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. Utility Model Content

[0004] In view of this, the technical problem to be solved by the utility model is: to provide a pressure device for a bending machine, wherein a clamping guide device is arranged between the upper crossbeam and the pressure head, which can clamp and guide the vertical movement of the pressure head to prevent the pressure head from deviating, thereby improving the bending accuracy of the steel plate, improving production efficiency and reducing production costs.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A pressure device for a bending machine, comprising:

[0007] An upper crossbeam, wherein a plurality of oil cylinders are installed on the upper crossbeam along its length direction, and the driving ends of the oil cylinders are arranged below the upper crossbeam;

[0008] A pressure head, the pressure head is arranged in the same direction as the upper cross beam and is located below the upper cross beam, the pressure head is fixedly connected to the driving end of the oil cylinder, and the oil cylinder is used to drive the pressure head to reciprocate in the vertical direction;

[0009] The clamping guide device comprises a clamping mechanism fixed to the bottom of the upper cross beam and a guide seat fixed to the top of the pressure head. The guide seat is matched with the clamping mechanism and is used to limit the reciprocating movement of the pressure head in the vertical direction.

[0010] Preferably, the upper crossbeam includes two side plates arranged opposite to each other, two end plates are fixedly arranged between the two side plates, the two side plates and the two end plates together surround and form a complete accommodating area, a bottom plate is fixedly arranged between the two side plates, and the driving end of the oil cylinder passes through the bottom plate and is fixedly connected to the pressure head;

[0011] The pressure head comprises a horizontally arranged top plate, the top plate is fixedly connected to the driving end of the oil cylinder, a pressing plate is fixedly arranged at the bottom of the top plate, the pressing plate is vertically arranged with the top plate, and an upper pressing die assembly is detachably mounted at the bottom end of the pressing plate;

[0012] The guide seat is fixedly arranged on the top plate.

[0013] Preferably, the clamping mechanism includes a guide mounting seat fixedly arranged at the bottom of the side plate, the guide mounting seat is fixedly provided with two oppositely arranged guide mounting plates, the guide mounting plates are provided with guide mounting plate inclined surfaces, at least one adjustment plate is adjustably installed on the guide mounting plates, the two adjustment plates arranged on the two guide mounting plates are arranged oppositely, and the adjustment plates are provided with adjustment plate inclined surfaces that are adapted to the guide mounting plate inclined surfaces.

[0014] Preferably, copper plates are installed on the opposite surfaces of the two adjustment plates;

[0015] 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.

[0016] Preferably, a guide mounting groove is concavely provided on the guide mounting plate, and the inclined surface of the guide mounting plate is arranged at the bottom of the guide mounting groove.

[0017] Preferably, both sides of the pressing plate are fixed with horizontally arranged support plates;

[0018] The guide seat comprises two vertically arranged guide plates, the two guide plates are arranged on both sides of the pressing plate and are arranged parallel to the pressing plate, and the guide plates are fixedly connected to the support plate.

[0019] Preferably, the top of the guide plate is located above the top plate, and a connecting plate is fixedly provided between the two guide plates, and the connecting plate is fixedly connected to the top plate.

[0020] Preferably, the oil cylinder comprises a pressing oil cylinder and a lifting oil cylinder.

[0021] Preferably, the bottom plate is provided with a plurality of cylinder mounting holes along its length direction, and the cylinder mounting holes include a pressing cylinder mounting hole for mounting the pressing cylinder and a lifting cylinder mounting hole for mounting the lifting cylinder;

[0022] A plurality of oil cylinder connection grooves are concavely arranged on the upper surface of the top plate, and the oil cylinder connection grooves include a pressing oil cylinder connection groove matched with the pressing oil cylinder mounting hole and a lifting oil cylinder connection groove matched with the lifting oil cylinder mounting hole.

[0023] Preferably, the upper die assembly comprises a plurality of upper pressing pieces arranged in a horizontal direction, and the bottom ends of the upper pressing pieces are convexly arranged in an arc shape;

[0024] 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.

[0025] After adopting the above technical solution, the beneficial effects of the utility model are:

[0026] Because in the utility model, an upper crossbeam, a pressure head and a clamping guide device are provided, wherein 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; the pressure head is arranged in the same direction as the upper crossbeam and is located below the upper crossbeam, the pressure head is fixedly connected to the driving end of the oil cylinder, and the oil cylinder can drive the pressure head to reciprocate in the vertical direction; the clamping guide device includes a clamping mechanism fixedly arranged at the bottom of the upper crossbeam and a guide seat fixedly arranged at the top of the pressure head, and the guide seat is adapted to the clamping mechanism, and when the oil cylinder drives the pressure head to reciprocate in the vertical direction, the displacement distance of the pressure head can be adjusted, the moving direction of the pressure plate can be adjusted, and the pressure head can be prevented from deviating, thereby improving the bending accuracy of the bending machine, improving the production efficiency, and reducing the production cost; moreover, the utility model eliminates the existence of the traditional pressure head mounting seat, reduces the overall weight of the pressure head, reduces the difficulty of lifting the oil cylinder, and saves power. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a schematic structural diagram of a pressure-applying device for a bending machine according to an embodiment of the utility model;

[0029] Figure 2 yes Figure 1 Exploded diagram of

[0030] Figure 3 yes Figure 1 The main view;

[0031] Figure 4 yes Figure 3 AA section view;

[0032] Figure 5 yes Figure 4 Enlarged view of part C;

[0033] Figure 6 yes Figure 3 BB cross-sectional view;

[0034] Figure 7 yes Figure 6 A magnified view of the D portion;

[0035] Figure 8 yes Figure 1 A partial cross-sectional view of

[0036] Fig. 9 yes Figure 8 A magnified view of part E;

[0037] In the figure:

[0038] 1. Upper crossbeam; 11. Side plate; 12. End plate; 13. Bottom plate; 14. Cylinder mounting hole; 141. Down-pressure cylinder mounting hole; 142. Lifting cylinder mounting hole;

[0039] 2. Oil cylinder; 21. Pressing oil cylinder; 22. Lifting oil cylinder;

[0040] 3. Pressure head; 31. Top plate; 32. Pressure plate; 321. Limiting groove; 33. Support plate; 34. Oil cylinder connecting groove; 341. Pressing oil cylinder connecting groove; 342. Lifting oil cylinder connecting groove;

[0041] 4. Clamping guide device; 41. Clamping mechanism; 411. Guide mounting seat; 412. Guide mounting plate; 4121. Guide mounting plate inclined surface; 4122. Guide mounting groove; 413. Adjustment plate; 4131. Adjustment plate inclined surface; 4132. Oil filling hole; 414. Copper plate; 4141. Lubrication groove; 42. Guide seat; 421. Guide plate; 422. Connecting plate;

[0042] 5. Upper die assembly; 51. Upper pressing piece; 52. Limiting block. DETAILED DESCRIPTION

[0043] 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.

[0044] like Figures 1 to 9As shown together, the utility model includes an upper crossbeam 1, a pressure head 3, and a clamping guide device 4; wherein, a plurality of oil cylinders 2 are installed on the upper crossbeam 1 along its length direction, and the driving end of the oil cylinder 2 is arranged below the upper crossbeam 1; the pressure head 3 is arranged in the same direction as the upper crossbeam 1 and is located below the upper crossbeam 1, and the pressure head 3 is fixedly connected to the driving end of the oil cylinder 2, and the oil cylinder 2 is used to drive the pressure head 3 to reciprocate in the vertical direction. When in use, the upper crossbeam 1 is fixedly connected to the wall panels on both sides of the bending machine, the upper crossbeam 1 does not move, and the oil cylinder 2 installed on the upper crossbeam 1 drives the pressure head 3 to reciprocate in the vertical direction.

[0045] The clamping guide device 4 includes a clamping mechanism 41 fixed to the bottom of the upper cross beam 1 and a guide seat 42 fixed to the top of the pressure head 3. The guide seat 42 is adapted to the clamping mechanism 41 and is used to limit the reciprocating movement of the pressure head 3 in the vertical direction.

[0046] In the utility model, the upper crossbeam 1 includes two oppositely arranged side plates 11, and two end plates 12 are fixedly arranged between the two side plates 11. The two side plates 11 and the two end plates 12 together surround and form a complete accommodating area. A bottom plate 13 is fixedly arranged between the two side plates 11, and the driving end of the oil cylinder 2 passes through the bottom plate 13 and is fixedly connected to the pressure head 3; the pressure head 3 includes a horizontally arranged top plate 31, and the top plate 31 is fixedly connected to the driving end of the oil cylinder 2. A pressing plate 32 is fixedly arranged at the bottom of the top plate 31, and the pressing plate 32 is vertically arranged to the top plate 31. The bottom end of the pressing plate 32 is detachably installed with an upper pressing die assembly 5, and the upper pressing die assembly 5 is adapted to the lower pressing die assembly on the lower crossbeam. Under the drive of the oil cylinder 2, the steel plate is bent to make the steel plate bent into a tubular shape; a guide seat 42 is fixedly arranged on the top plate 31.

[0047] Among them, the clamping mechanism 41 includes a guide mounting seat 411 fixed to the bottom of the side plate 11, two oppositely arranged guide mounting plates 412 are fixed on the guide mounting seat 411, a guide mounting plate inclined surface 4121 is arranged on the guide mounting plate 412, at least one adjustment plate 413 is adjustably installed on the guide mounting plate 412, the two adjustment plates 413 arranged on the two guide mounting plates 412 are arranged oppositely, and an adjustment plate inclined surface 4131 adapted to the guide mounting plate inclined surface 4121 is arranged on the adjustment plate 413.

[0048] When the adjusting plate 413 slides along the inclined surface 4121 of the guide mounting plate, the two adjusting plates 413 arranged on the two guide mounting plates 412, one of the adjusting plates 413 approaches or moves away from the other adjusting plate 413, or the two adjusting plates 413 approach or move away from each other, can clamp and guide the guide seat 42 located between the two adjusting plates 413, and the guide seat 42 is fixedly connected to the pressure head 3, thereby clamping and guiding the pressure head 3, and the pressure head 3 can only move between the two adjusting plates 413, limiting the moving direction of the pressure head 3, and preventing the pressure head 3 from deviating, and by adjusting the positions of the two adjusting plates 413, the downward movement path of the pressure head 3 can be fine-tuned, thereby improving the bending accuracy of the bending machine, improving the production efficiency, and reducing the production cost.

[0049] Copper plates 414 are installed on the opposite surfaces of the two adjustment plates 413; a lubrication groove 4141 is recessed on the copper plate 414, and an oil filling hole 4132 is opened on the adjustment plate 413. The lubrication groove 4141 is connected to the oil filling hole 4132, and the oil filling hole 4132 is connected to the outside through an oil channel opened in the adjustment plate 413.

[0050] During the movement of the ram 3, the copper plate 414 abuts against the guide seat 42, which can prevent direct friction between the ram 3 and the adjusting plate 413, thereby increasing the service life of the ram 3 and the adjusting plate 413; at the same time, during the process of clamping and guiding the ram 3, the copper plate 414 and the adjusting plate 413 will not move relative to each other. Therefore, the positions of the oil filling hole 4132 and the lubrication groove 4141 will not change relative to each other. The external lubricating oil can enter the lubrication groove 4141 through the oil channel and the oil filling hole 4132 to lubricate the guide seat 42 abutting against the copper plate 414, thereby reducing the friction between the ram 3 and the copper plate 414 when it moves, reducing the movement resistance, and improving the movement effect.

[0051] The guide mounting plate 412 is provided with a guide mounting groove 4122, and the guide mounting plate inclined surface 4121 is arranged at the groove bottom of the guide mounting groove 4122. The adjustment plate 413 is clamped in the guide mounting groove 4122, and the guide mounting groove 4122 can limit the adjustment plate 413 to move with the pressure head 3, thereby improving the adjustment effect.

[0052] In the present invention, both sides of the pressing plate 32 are fixed with horizontally arranged support plates 33; the guide seat 42 includes two vertically arranged guide plates 421, which are arranged on both sides of the pressing plate 32 and are arranged parallel to the pressing plate 32, and the guide plates 421 are fixedly connected to the support plates 33. The guide plates 421 are matched with the adjustment plates 413 and the copper plates 414 to adjust the moving direction of the pressing plate 32.

[0053] The top of the guide plate 421 is located above the top plate 31, and a connecting plate 422 is fixedly arranged between the two guide plates 421, and the connecting plate 422 is fixedly connected to the top plate 31. The connecting plate 422 enhances the connection strength between the guide plate 421 and the top plate 31 and the pressing plate 32.

[0054] In the present invention, the oil cylinder 2 includes a pressing oil cylinder 21 and a lifting oil cylinder 22. When the pressure head 3 moves downward in the vertical direction, the pressing oil cylinder 21 drives it to move downward. When the steel plate is bent, the pressing oil cylinder 21 also applies pressure to it to make it bend. After the bending is completed once, since the moving speed of the pressing oil cylinder 21 is slow, a lifting oil cylinder 22 is added. When the pressure head 3 moves upward in the vertical direction, the lifting oil cylinder 22 drives the pressure head 3 to move upward, thereby increasing the upward moving speed of the pressure head 3, thereby improving the overall bending efficiency and reducing the production cost.

[0055] A plurality of cylinder mounting holes 14 are formed on the bottom plate 13 along its length direction. The cylinder mounting holes 14 include a pressing cylinder mounting hole 141 for mounting the pressing cylinder 21 and a lifting cylinder mounting hole 142 for mounting the lifting cylinder 22 .

[0056] The upper surface of the top plate 31 is concavely provided with a plurality of cylinder connection grooves 34, including a pressing cylinder connection groove 341 adapted to the pressing cylinder mounting hole 141 and a lifting cylinder connection groove 342 adapted to the lifting cylinder mounting hole 142. The pressing cylinder connection groove 341 is used to connect the pressing cylinder 21 to the top plate 31, and the lifting cylinder connection groove 342 is used to connect the lifting cylinder 22 to the top plate 31.

[0057] In the present invention, the upper die assembly 5 includes a plurality of upper pressing pieces 51 arranged in the horizontal direction, and the bottom end of the upper pressing piece 51 is convexly arranged in an arc shape; preferably, the number of the upper pressing pieces 51 is four. A stop block 52 is convexly arranged on the top of the upper pressing piece 51, and a stop groove 321 adapted to the stop block 52 is concavely arranged on the bottom of the pressing plate 32. In the assembled state, the stop block 52 is clamped in the groove of the stop groove 321 to prevent the upper pressing piece 51 from being offset, thereby preventing the bending accuracy of the steel plate from being affected and improving the bending effect.

[0058] When the utility model is in use, the upper crossbeam 1 is fixedly connected to the wall panels on both sides of the bending machine, the upper crossbeam 1 does not move, and the downward pressure cylinder 21 installed on the bottom plate 13 drives the pressure head 3 to move downward in the vertical direction, so that the pressure plate 32 drives the upper pressure piece 51 to move toward the position of the steel plate, and finally the upper pressure piece 51 cooperates with the lower pressure piece to achieve bending of the steel plate. After bending once, the pressure head 3 is driven to move upward by the lifting cylinder 22, so that the upper pressure piece 51 leaves the surface of the steel plate, which is convenient for horizontal movement of the steel plate to meet the need of bending the steel plate next time.

[0059] During the process of the ram 3 moving downward and upward, the clamping guide device 4 clamps and guides the movement of the ram 3. Specifically, before the ram 3 moves, the adjusting plate inclined surface 4131 and the guiding mounting plate inclined surface 4121 are slidably matched to change the position of the adjusting plate 413 in the horizontal direction, thereby changing the contact strength of the copper plate 414 against the guide plate 421, thereby achieving fine-tuning of the moving path of the ram 3 and preventing the ram from deviating.

[0060] 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 pressure device for a bending machine, characterized in that: include: An upper crossbeam, wherein a plurality of oil cylinders are installed on the upper crossbeam along its length direction, and the driving ends of the oil cylinders are arranged below the upper crossbeam; A pressure head, the pressure head is arranged in the same direction as the upper cross beam and is located below the upper cross beam, the pressure head is fixedly connected to the driving end of the oil cylinder, and the oil cylinder is used to drive the pressure head to reciprocate in the vertical direction; The clamping guide device comprises a clamping mechanism fixed to the bottom of the upper cross beam and a guide seat fixed to the top of the pressure head. The guide seat is matched with the clamping mechanism and is used to limit the reciprocating movement of the pressure head in the vertical direction.

2. The pressure-applying device for a bending machine according to claim 1, characterized in that: The upper crossbeam includes two side plates arranged opposite to each other, two end plates are fixedly arranged between the two side plates, the two side plates and the two end plates together surround and form a complete accommodating area, a bottom plate is fixedly arranged between the two side plates, and the driving end of the oil cylinder passes through the bottom plate and is fixedly connected to the pressure head; The pressure head comprises a horizontally arranged top plate, the top plate is fixedly connected to the driving end of the oil cylinder, a pressing plate is fixedly arranged at the bottom of the top plate, the pressing plate is vertically arranged with the top plate, and an upper pressing die assembly is detachably mounted at the bottom end of the pressing plate; The guide seat is fixedly arranged on the top plate.

3. The pressure-applying device for a bending machine according to claim 2, characterized in that: The clamping mechanism includes a guide mounting seat fixedly arranged at the bottom of the side plate, two guide mounting plates arranged opposite to each other are fixedly arranged on the guide mounting seat, a guide mounting plate inclined surface is arranged on the guide mounting plate, at least one adjustment plate is adjustably mounted on the guide mounting plate, the two adjustment plates arranged on the two guide mounting plates are arranged opposite to each other, and an adjustment plate inclined surface adapted to the guide mounting plate inclined surface is arranged on the adjustment plate.

4. The pressure-applying device for a bending machine according to claim 3, 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.

5. The pressure-applying device for a bending machine according to claim 3, characterized in that: The guide installation plate is concavely provided with a guide installation groove, and the inclined surface of the guide installation plate is arranged at the groove bottom of the guide installation groove.

6. The pressure-applying device for a bending machine according to claim 2, characterized in that: Both sides of the pressing plate are fixed with horizontally arranged support plates; The guide seat comprises two vertically arranged guide plates, the two guide plates are arranged on both sides of the pressing plate and are arranged parallel to the pressing plate, and the guide plates are fixedly connected to the support plate.

7. The pressure-applying device for a bending machine according to claim 6, characterized in that: The top of the guide plate is located above the top plate, and a connecting plate is fixedly arranged between the two guide plates, and the connecting plate is fixedly connected to the top plate.

8. The pressure-applying device for a bending machine according to claim 2, characterized in that: The oil cylinder comprises a pressing oil cylinder and a lifting oil cylinder.

9. The pressure-applying device for a bending machine according to claim 8, characterized in that: The bottom plate is provided with a plurality of oil cylinder mounting holes along its length direction, wherein the oil cylinder mounting holes include a pressing oil cylinder mounting hole for mounting the pressing oil cylinder and a lifting oil cylinder mounting hole for mounting the lifting oil cylinder; A plurality of oil cylinder connection grooves are concavely arranged on the upper surface of the top plate, and the oil cylinder connection grooves include a pressing oil cylinder connection groove matched with the pressing oil cylinder mounting hole and a lifting oil cylinder connection groove matched with the lifting oil cylinder mounting hole.

10. The pressure-applying device for a bending machine according to claim 2, characterized in that: The upper die assembly includes a plurality of upper pressing pieces arranged in a horizontal direction, and the bottom ends of the upper pressing pieces 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.

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