Pneumatic double-station lower die positioning device of bending machine

Abstract

The utility model discloses a pneumatic double-station lower die positioning device of a bending machine, which relates to the technical field of bending machines and has the advantages that double stations are arranged on a lower die, so that the pneumatic double-station lower die positioning device is suitable for bending plates with two thicknesses or bending plates with two angles. According to the technical scheme, the die support is placed on a working table of the bending machine, the lower die is installed at the top end of the die support through an installation piece, two stations, namely a first V-groove and a second V-groove, are arranged on the lower die, and a pushing piece used for pushing the die support to move horizontally is arranged on the working table of the bending machine.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a pneumatic double-station lower die positioning device for a bending machine. Background Art

[0002] Bending - Under the pressure of the upper or lower die of the bending machine, the metal sheet first undergoes elastic deformation and then enters plastic deformation. At the beginning of plastic bending, the sheet is free to bend. As the upper or lower die applies pressure to the sheet, the sheet and the inner surface of the V-groove of the lower die gradually come close to each other. At the same time, the radius of curvature and the bending arm gradually become smaller. Continue to apply pressure until the stroke ends, so that the upper and lower dies are in full contact with the sheet at three points. At this time, a V-shaped bend is completed, which is commonly known as bending.

[0003] Most existing bending machines have only one workstation on their lower dies, so that usually only plates of one thickness can be bent at a fixed angle, which is limiting. Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a pneumatic double-station lower die positioning device for a bending machine, which has the advantage of arranging double stations on the lower die, thereby adapting to bending of plates of two thicknesses or two angles.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a pneumatic double-station lower die positioning device for a bending machine, comprising a die support placed on a working table of the bending machine and a lower die installed on the top of the die support through a mounting member, the lower die is provided with two stations, namely V-groove one and V-groove two, and the working table of the bending machine is provided with a pushing member for pushing the die support to move horizontally.

[0007] By adopting the above technical solution, when in use, the lower die is installed on the die support through the mounting part, and then the die support is pushed by the pushing part to move horizontally on the workbench of the bending machine until one of the stations (V-groove one or V-groove two) on the lower die is aligned with the upper touch of the bending machine. The die support is pushed by the pushing part to move horizontally on the workbench of the bending machine to change the station on the lower die and align it with the upper touch, so that it can adapt to two thicknesses of plates or two angles for bending, which is simple and convenient to use.

[0008] Preferably, the pushing member includes two fixed blocks arranged on one side of the bending machine workbench, and cylinders are provided on the two fixed blocks, and one end of the piston rods of the two cylinders passes through the fixed blocks and is detachably connected to one side of the mold support.

[0009] Preferably, the mounting member includes a mounting groove arranged at the top of the mold support along the length direction of the mold support, and a plurality of baffles are horizontally arranged on the opposite sides of the mounting groove, and each of the baffles is spaced apart along the length direction of the mounting groove, and the bottom end of the lower mold is provided with a connecting plate located in the mounting groove, and a mounting plate is provided at the bottom end of the connecting plate, and a plurality of grooves are vertically arranged on the opposite sides of the mounting plate, and each of the grooves is connected with the top and bottom ends of the mounting plate, each of the grooves is spaced apart along the length direction of the mounting plate, and each of the grooves is staggered with each baffle, the mounting plate is located below each baffle, and the bottom end of each baffle contacts with the top of the mounting plate, and a power member for pushing the mounting plate to move horizontally in the mounting groove is provided on the mold support.

[0010] Preferably, the power part includes a push plate horizontally slidingly connected in the mounting groove along the length direction of the mounting groove, and the push plate is located on one side of the mounting plate, a compression spring is provided on the side of the push plate away from the mounting plate, and the end of the compression spring away from the push plate is fixedly connected to the groove wall of the mounting groove, a column is horizontally provided on the side of the push plate away from the mounting plate, and the end of the column away from the push plate horizontally passes through the mold support and is provided with a pull ring located outside the mounting groove.

[0011] Preferably, the bottom end of the lower mold contacts the top end of the mold support, and the lower mold closes the notch of the mounting groove.

[0012] Preferably, the mounting plate and the connecting plate form an inverted T-shaped plug plate, and the plug plate is arranged at the bottom end of the lower mold by bolts.

[0013] The beneficial effect of the utility model is that when in use, the lower die is installed on the die support through the mounting member, and then the die support is pushed by the pushing member to move horizontally on the workbench of the bending machine until one of the stations (V-groove one or V-groove two) on the lower die is aligned with the upper touch of the bending machine. The die support is pushed by the pushing member to move horizontally on the workbench of the bending machine to change the station on the lower die and align it with the upper touch, so that it can adapt to two thicknesses of plates or two angles for bending, and it is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of this embodiment;

[0016] Figure 2 This is a schematic diagram of the structure of the pull ring in this embodiment;

[0017] Figure 3 This is a schematic diagram of the structure of the push plate in this embodiment;

[0018] Figure 4 This is a schematic diagram of the structure of the groove in this embodiment;

[0019] Figure 5 FIG. 2 is a schematic diagram showing the structure of the plug board according to the present embodiment.

[0020] Description of reference numerals:

[0021] In the figure: 1. bending machine workbench; 2. die support; 3. lower die; 4. V-groove 1; 5. V-groove 2; 6. fixing block; 7. cylinder; 8. mounting groove; 9. baffle; 10. connecting plate; 12. mounting plate; 13. groove; 14. push plate; 15. compression spring; 16. column; 17. pull ring; 18. bolt; 19. plug plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] A pneumatic double-station lower die positioning device for a bending machine, such as Figure 1 , including a mold support 2 placed on a bending machine workbench 1 and a lower mold 3 installed on the top of the mold support 2 through a mounting part, the lower mold 3 is provided with two workstations, namely V-groove 1 4 and V-groove 2 5, and the bending machine workbench 1 is provided with a pushing part for pushing the mold support 2 to move horizontally.

[0024] like Figure 1 When in use, the lower die 3 is installed on the die support 2 through the mounting part, and then the die support 2 is pushed by the pushing part to move horizontally on the bending machine workbench 1 until one of the stations (V-groove 1 4 or V-groove 2 5) on the lower die 3 is aligned with the upper touch of the bending machine. The die support 2 is pushed by the pushing part to move horizontally on the bending machine workbench 1 to change the station on the lower die 3 and align it with the upper touch, so that it can adapt to two thicknesses of plates or two angles for bending, which is simple and convenient to use.

[0025] like Figure 1The pushing member includes two fixed blocks 6 arranged on one side of the bending machine workbench 1, and the two fixed blocks 6 are provided with cylinders 7. One end of the piston rods of the two cylinders 7 passes through the fixed blocks 6 and is detachably connected to one side of the mold support 2. When it is necessary to push the mold support 2 to move horizontally, it only needs to open the two cylinders 7. At this time, the piston rods of the two cylinders 7 will push the mold support 2 to move horizontally, which is simple and convenient to use.

[0026] like Figure 2 and Figure 3 and Figure 4 The mounting part includes a mounting groove 8 arranged at the top of the mold support 2 along the length direction of the mold support 2, and a plurality of baffles 9 are horizontally arranged on the opposite sides of the notch of the mounting groove 8, and each baffle 9 is spaced apart along the length direction of the mounting groove 8. A connecting plate 10 located in the mounting groove 8 is provided at the bottom end of the lower mold 3, and a mounting plate 12 is provided at the bottom end of the connecting plate 10, and a plurality of grooves 13 are vertically arranged on the opposite sides of the mounting plate 12, and each groove 13 is connected with the top and bottom ends of the mounting plate 12, each groove 13 is spaced apart along the length direction of the mounting plate 12, and each groove 13 is staggered with each baffle 9, the mounting plate 12 is located below each baffle 9, and the bottom end of each baffle 9 contacts with the top end of the mounting plate 12, and a power part for pushing the mounting plate 12 to move horizontally in the mounting groove 8 is provided on the mold support 2.

[0027] like Figure 2 and Figure 3 and Figure 4 , install the connecting plate 10 on the lower mold 3, then align the mounting plate 12 with the mounting groove 8, each groove 13 corresponds to each baffle 9 one by one, and then insert the mounting plate 12 into the mounting groove 8 from top to bottom, at this time the baffle 9 will enter the groove 13, when the mounting plate 12 and the connecting plate 10 are inserted into the mounting groove 8, the baffle 9 will pass through the groove 13 and be located above the mounting plate 12, and then the mounting plate 12 is pushed by the power piece to move horizontally in the mounting groove 8 along the length direction of the mounting groove 8 until the baffle 9 and the groove 13 are misaligned, at this time the lower mold 3 can be installed on the mold support 2, and the disassembly and assembly are simple.

[0028] like Figure 3 and Figure 4 The power part includes a push plate 14 which is horizontally slidably connected to the mounting groove 8 along the length direction of the mounting groove 8, and the push plate 14 is located on one side of the mounting plate 12. A compression spring 15 is provided on the side of the push plate 14 away from the mounting plate 12, and the end of the compression spring 15 away from the push plate 14 is fixedly connected to the groove wall of the mounting groove 8. A column 16 is horizontally provided on the side of the push plate 14 away from the mounting plate 12, and the end of the column 16 away from the push plate 14 horizontally passes through the mold support 2 and is provided with a pull ring 17 located outside the mounting groove 8.

[0029] like Figure 3 and Figure 4When the mounting plate 12 is inserted into the mounting groove 8 from top to bottom, first pull the pull ring 17 to move away from the mold support 2. At this time, the push plate 14 will follow the pull ring 17 through the column 16. At this time, the compression spring 15 is compressed, and then the mounting plate 12 is inserted into the mounting groove 8 from top to bottom. At this time, the side of the push plate 14 away from the compression spring 15 contacts the mounting plate 12, and then the pull ring 17 is released. At this time, the compressed compression spring 15 will push the push plate 14 to drive the mounting plate 12 to move in the mounting groove 8. When the baffle 9 and the groove 13 on the mounting plate 12 are misaligned with the movement of the mounting plate 12, the side of the mounting plate 12 away from the push plate 14 will conflict with the groove wall of the mounting groove 8, which is simple and convenient to use.

[0030] like Figure 2 and Figure 3 The bottom end of the lower mold 3 contacts the top end of the mold support 2, and the lower mold 3 closes the notch of the mounting groove 8. After the lower mold 3 is installed on the mold support 2, the notch of the mounting groove 8 is closed by the lower mold 3 to reduce the entry of foreign impurities into the mounting groove 8, thereby affecting the disassembly and assembly of the mounting plate 12 in the mounting groove 8. It is simple and convenient to use.

[0031] like Figure 4 and Figure 5 The mounting plate 12 and the connecting plate 10 form an inverted T-shaped plug plate 19, and the plug plate 19 is set at the bottom end of the lower mold 3 by a bolt 18. When the plug plate 19 is worn or damaged and needs to be replaced, or the lower mold 3 is worn or damaged and needs to be replaced, it is only necessary to remove the plug plate 19 from the lower mold 3 by the bolt 18, and then replace the plug plate 19 or the lower mold 3 that needs to be replaced. It is simple and convenient to use.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A pneumatic double-station lower die positioning device for a bending machine, characterized in that: It comprises a die support (2) placed on a bending machine workbench (1) and a lower die (3) mounted on the top of the die support (2) via a mounting member, the lower die (3) being provided with two workstations, namely a V-groove 1 (4) and a V-groove 2 (5), and the bending machine workbench (1) being provided with a pushing member for pushing the die support (2) to move horizontally; The mounting member comprises a mounting groove (8) arranged at the top end of the mold support (2) along the length direction of the mold support (2), and a plurality of baffles (9) are horizontally arranged on opposite sides of the groove opening of the mounting groove (8), and each of the baffles (9) is spaced apart along the length direction of the mounting groove (8); a connecting plate (10) located in the mounting groove (8) is arranged at the bottom end of the lower mold (3), and a mounting plate (12) is arranged at the bottom end of the connecting plate (10), and a plurality of grooves (12) are vertically arranged on opposite sides of the mounting plate (12). 3), and each groove (13) is connected to the top and bottom of the mounting plate (12), each of the grooves (13) is spaced apart along the length direction of the mounting plate (12), and each of the grooves (13) is staggered with each of the baffles (9), the mounting plate (12) is located below each of the baffles (9), and the bottom end of each of the baffles (9) is in contact with the top of the mounting plate (12), and a power member for pushing the mounting plate (12) to move horizontally in the mounting groove (8) is provided on the mold support (2).

2. A pneumatic double-station lower die positioning device for a bending machine as claimed in claim 1, characterized in that: The pushing member comprises two fixed blocks (6) arranged on one side of the bending machine workbench (1), and the two fixed blocks (6) are each provided with a cylinder (7), and one end of the piston rod of the two cylinders (7) passes through the fixed block (6) and is detachably connected to one side of the mold support (2).

3. A pneumatic double-station lower die positioning device for a bending machine as claimed in claim 1, characterized in that: The power member comprises a push plate (14) horizontally slidably connected to the mounting groove (8) along the length direction of the mounting groove (8), and the push plate (14) is located on one side of the mounting plate (12); a compression spring (15) is provided on the side of the push plate (14) facing away from the mounting plate (12), and one end of the compression spring (15) away from the push plate (14) is fixedly connected to the groove wall of the mounting groove (8); a column (16) is horizontally provided on the side of the push plate (14) facing away from the mounting plate (12), and one end of the column (16) away from the push plate (14) horizontally passes through the mold support (2) and is provided with a pull ring (17) located outside the mounting groove (8).

4. A pneumatic double-station lower die positioning device for a bending machine as claimed in claim 3, characterized in that: The bottom end of the lower mold (3) contacts the top end of the mold support (2), and the lower mold (3) closes the notch of the installation groove (8).

5. A pneumatic double-station lower die positioning device for a bending machine as claimed in claim 1, characterized in that: The mounting plate (12) and the connecting plate (10) form an inverted T-shaped insert plate (19), and the insert plate (19) is arranged at the bottom end of the lower mold (3) through bolts (18).

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