Pressure head for bending machine

Abstract

A pressing head for a bending machine relates to the technical field of steel plate bending equipment and comprises a horizontally arranged top plate, a plurality of oil cylinder connecting grooves are concavely formed in the upper surface of the top plate, a pressing plate is fixedly arranged at the bottom of the top plate and is perpendicular to the top plate, and an upper pressing die assembly is detachably mounted at the bottom end of the pressing plate; horizontally-arranged supporting plates are fixedly arranged on the two sides of the pressing plate, a guide seat is fixedly arranged on the top plate and fixedly connected with the two supporting plates, a plurality of vertically-arranged rib plates are fixedly arranged between the supporting plates and the top plate in the horizontal direction, and the rib plates are fixedly connected with the pressing plate. The whole weight of the pressing head can be reduced, the pressing strength of the pressing head is guaranteed, the vertical movement of the pressing head is guided, the pressing head is prevented from deviating, the bending precision 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 head 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] The existing rams used on bending machines are mostly connected to the cylinder through the ram mounting seat. For example, a ram device of a press machine disclosed in publication number CN210436686U specifically discloses in the specific implementation mode of the specification and the drawings of the specification: "The guide sleeve 1 is detachably fixed to the ram mounting seat 5 of the press machine (not shown in the figure) by common methods such as snap connection or locating pin connection. A cylindrical cavity is provided inside the guide sleeve 1, and the opening of the guide sleeve 1 faces downward. The ram body 2 is a cylindrical structure. The ram body 2 is eccentrically installed in the guide sleeve 1. When the ram body 2 rotates eccentrically in the guide sleeve 1, one side of the ram body 2 contacts the side wall of the guide sleeve 1. The rotating nut 3 is placed on the guide sleeve 1, and the rotating nut 3 is fixedly connected to the ram body 2 by a locking bolt 6." The pressure head mounting seat is connected to the pressure head body through locking bolts and guide sleeves, and its structure is complex and inconvenient to maintain. Moreover, the added guide sleeve and pressure head mounting seat also increase the overall weight, which increases the resistance when the cylinder is lifted, causing power waste, reducing lifting efficiency and increasing production costs. Utility Model Content

[0004] In view of this, the technical problem to be solved by the utility model is: to provide a pressure head for a bending machine, which can reduce the overall weight of the pressure head, ensure the pressure strength of the pressure head, and guide the vertical movement of the pressure head to prevent the pressure head from deviating, thereby improving the bending accuracy, 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 press head for a bending machine, comprising a horizontally arranged top plate, a plurality of oil cylinder connection grooves are concavely arranged on the upper surface of the top plate, a pressing plate is fixedly arranged at the bottom of the top plate, the pressing plate is arranged vertically with the top plate, and an upper pressing die assembly is detachably mounted at the bottom end of the pressing plate;

[0007] Horizontally arranged support plates are fixed on both sides of the pressure plate, a guide seat is fixed on the top plate, the guide seat is fixedly connected to the two support plates, a plurality of vertically arranged rib plates are fixedly arranged between the support plate and the top plate along the horizontal direction, and the rib plates are fixedly connected to the pressure plate.

[0008] Preferably, the guide seat includes 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.

[0009] 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.

[0010] Preferably, the oil cylinder connecting groove includes a pressing oil cylinder connecting groove and a lifting oil cylinder connecting groove.

[0011] Preferably, the bottom of the oil cylinder connecting groove is provided with an oil cylinder connecting hole which passes through the top plate.

[0012] 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.

[0013] Preferably, a limiting block is convexly provided on the top of the upper pressing member, and a limiting groove matched with the limiting block is concavely provided on the bottom of the pressing plate.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] In the utility model, a press head for a bending machine is disclosed, comprising a horizontally arranged top plate, a plurality of oil cylinder connection grooves are concavely arranged on the upper surface of the top plate, a driving end of the oil cylinder is arranged in the oil cylinder connection groove and fixedly connected to the top plate, a pressing plate is fixedly arranged at the bottom of the top plate, the pressing plate is arranged vertically with the top plate, and an upper die assembly is detachably installed at the bottom end of the pressing plate; the upper die assembly is adapted to the lower die assembly on the lower beam, and under the drive of the oil cylinder, the steel plate is bent into a tubular shape. Horizontally arranged support plates are arranged on both sides of the press plate, a guide seat is fixedly arranged on the top plate, the guide seat is fixedly connected to the two support plates, the guide seat can be adapted to the clamping guide device on the upper beam, and under the guiding action of the clamping guide device, the moving direction of the press plate can be adjusted, and the upper die assembly can be prevented from running off, thereby improving the bending accuracy of the bending machine. A plurality of rib plates are fixedly arranged between the support plate and the top plate in the horizontal direction, the rib plate is fixedly connected to the press plate, and the arrangement of the rib plate enhances the connection strength between the support plate and the top plate. At the same time, the utility model eliminates the existence of a 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

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic structural diagram of a pressure head for a bending machine according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A magnified view of part A;

[0019] In the figure:

[0020] 1. Top plate; 11. Oil cylinder connection groove; 111. Pressing oil cylinder connection groove; 112. Lifting oil cylinder connection groove; 12. Oil cylinder connection hole;

[0021] 2. Pressing plate; 21. Limiting groove;

[0022] 3. Upper die assembly; 31. Upper pressing piece; 311. Limiting block;

[0023] 4. Support board;

[0024] 5. Guide seat; 51. Guide plate; 52. Connecting plate;

[0025] 6. Rib board. DETAILED DESCRIPTION

[0026] 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.

[0027] like Figure 1 and Figure 2 As shown together, the utility model includes a horizontally arranged top plate 1, the upper surface of the top plate 1 is concavely provided with a plurality of cylinder connecting grooves 11, the driving end of the cylinder is arranged in the cylinder connecting groove 11 and fixedly connected with the top plate 1, a pressing plate 2 is fixedly arranged at the bottom of the top plate 1, the pressing plate 2 is vertically arranged with the top plate 1, and an upper pressing die assembly 3 is detachably installed at the bottom end of the pressing plate 2; the upper pressing die assembly 3 is matched with the lower pressing die assembly on the lower beam, and under the drive of the cylinder, the steel plate is bent into a tubular shape.

[0028] Both sides of the pressing plate 2 are fixed with horizontally arranged support plates 4, and the top plate 1 is fixed with a guide seat 5, which can be matched with the clamping guide device on the upper crossbeam. Under the guiding action of the clamping guide device, the moving direction of the pressing plate 2 can be adjusted, and the upper die assembly 3 can be prevented from deviating, thereby improving the bending accuracy of the bending machine. The guide seat 5 is fixedly connected to the two support plates 4, and a number of vertically arranged rib plates 6 are fixedly arranged between the support plates 4 and the top plate 1 in the horizontal direction, and the rib plates 6 are fixedly connected to the pressing plate 2. The setting of the rib plates 6 enhances the connection strength between the support plates 4 and the top plate 1.

[0029] In the present invention, the guide seat 5 includes two vertically arranged guide plates 51, which are arranged on both sides of the pressing plate 2 and are arranged parallel to the pressing plate 2, and the guide plates 51 are fixedly connected to the support plate 4. The guide plates 51 are adapted to the clamping guide device on the upper beam to adjust the moving direction of the pressing plate 2.

[0030] Preferably, the top of the guide plate 51 is located above the top plate 1, and a connecting plate 52 is fixedly arranged between the two guide plates 51, and the connecting plate 52 is fixedly connected to the top plate 1. The connecting plate 52 enhances the connection strength between the guide plate 51 and the top plate 1 and the pressing plate 2.

[0031] The oil cylinder connection groove 11 includes a pressing oil cylinder connection groove 111 and a lifting oil cylinder connection groove 112. The pressing oil cylinder connection groove 111 is used to connect the pressing oil cylinder with the top plate 1, and the lifting oil cylinder connection groove 112 is used to connect the lifting oil cylinder with the top plate 1.

[0032] Among them, the bottom of the oil cylinder connection groove 11 is provided with an oil cylinder connection hole 12 which is arranged through the top plate 1. It is convenient to fix and connect with the driving end of the oil cylinder through the oil cylinder connection hole 12 by bolts.

[0033] In the present invention, the upper die assembly 3 includes a plurality of upper pressing pieces 31 arranged in a horizontal direction, and the bottom ends of the upper pressing pieces 31 are convexly arranged in an arc shape.

[0034] A stop block 311 is convexly arranged on the top of the upper pressing member 31, and a stop groove 21 matching the stop block 311 is concavely arranged on the bottom of the pressing plate 2. In the assembled state, the stop block 311 is clamped in the groove of the stop groove 21 to prevent the upper pressing member 31 from deflecting, thereby preventing the bending accuracy of the steel plate from being affected and improving the bending effect.

[0035] In the present invention, the top plate 1 and the pressure plate 2 are directly fixedly connected, the existence of the traditional pressure head mounting seat is eliminated, the overall weight of the pressure head is reduced, the pressure strength of the pressure head is ensured, the lifting difficulty of the oil cylinder is reduced, and power is saved. At the same time, a guide seat 5 is provided on the top plate 1. When in use, the driving end of the oil cylinder is fixedly connected to the top plate 1 through the oil cylinder connection groove 11, and the oil cylinder drives the utility model to move downward as a whole. During the movement, the guide seat 5 is adapted to the clamping guide device on the upper crossbeam. Under the guiding action of the clamping guide device, the moving direction of the pressure plate 2 can be adjusted, the upper die assembly 3 can be prevented from running off, and the steel plate can be accurately bent, thereby improving the bending accuracy of the bending machine.

[0036] 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 head for a bending machine, characterized in that: It comprises a horizontally arranged top plate, a plurality of oil cylinder connection grooves are concavely arranged on the upper surface of the top plate, a pressing plate is fixedly arranged at the bottom of the top plate, the pressing plate is arranged vertically with the top plate, and an upper pressing die assembly is detachably installed at the bottom end of the pressing plate; Horizontally arranged support plates are fixed on both sides of the pressure plate, a guide seat is fixed on the top plate, the guide seat is fixedly connected to the two support plates, a plurality of vertically arranged rib plates are fixedly arranged between the support plate and the top plate along the horizontal direction, and the rib plates are fixedly connected to the pressure plate.

2. The press head for a bending machine according to claim 1, characterized in that: 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.

3. The press head for a bending machine according to claim 2, 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.

4. The press head for a bending machine according to claim 1, characterized in that: The oil cylinder connecting grooves include a pressing oil cylinder connecting groove and a lifting oil cylinder connecting groove.

5. The press head for a bending machine according to claim 1, characterized in that: The bottom of the oil cylinder connecting groove is provided with an oil cylinder connecting hole which penetrates through the top plate.

6. The press head for a bending machine according to claim 1, characterized in that: The upper pressing 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.

7. The press head for a bending machine according to claim 6, characterized in that: 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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