A bending machine pneumatic blank holder combined lower die

Abstract

The utility model discloses a kind of pneumatic bending machine edge compression combined lower die, it is related to bending machine technical field, including die holder, base and lower die, the die holder is slidably arranged on the base by air cylinder, the lower die is assembled and arranged above the die holder, the die holder includes top support and fixed seat, the lower end of the lower die is assembled and arranged above top support, the fixed seat is set at the rear of top support bottom, the base is set as U-shaped structure, the fixed seat is slidably arranged on the base, and operating space is left between the bottom of top support, the front of fixed seat and the top of base located in front. The utility model, when edge compression is needed, extend air cylinder, open the die, select different edge compression shape, material bending position can be placed between die and the top of base or between top support and the top of die, when pressing, contract air cylinder, cooperate with the upper die of bending machine and press down to the lower die to exert uniform force, realize the edge compression operation of different shape to material.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a pneumatic pressing edge combination lower die for a bending machine. Background Technology

[0002] A bending machine is a machine capable of bending thin plates. Its structure mainly includes a support, a worktable, and a clamping plate. The worktable is placed on the support and consists of a base and a pressure plate. It is a device that completes the overall bending and forming of sheet metal. After one stroke of the slider, the sheet metal is bent into a cross-sectional profile of a certain geometric shape. Various shapes of workpieces can be produced using relatively simple dies, and multiple bends can also produce more complex cross-sectional shapes.

[0003] When bending steel plates with a bending machine, it is sometimes necessary to press the edges of the plates to prevent them from being sharp and cutting hands. In practice, the plates are usually placed between the upper and lower dies of the bending machine. The lower groove is used to bend the plates at a certain angle, and then the plates are removed. The bent part is placed at the pressing position on one side of the lower die, and the bending part is pressed by a pneumatic component.

[0004] For example, a pneumatic flattening mold for a bending machine, as described in "CN217528807U", includes a mold body comprising an upper mold and a lower mold connected together, forming a flattening notch between them. The top surface of the upper mold has a bending groove along its length, and the side surface of the lower mold has guide strips. This pneumatic flattening mold for a bending machine, through its connection during separation, facilitates partial replacement when one of the two molds is damaged, avoiding the need for complete replacement. The fixed design increases the overall strength of the equipment, thus reducing replacement costs. Its detachable or fixed design allows for flexible use in different environments. Furthermore, by performing a bending-then-flattening operation, the mold can perform multiple operations such as flattening and bending.

[0005] However, in the existing technology, the requirements for the edge pressing shape of the plate are different depending on the use of different steel plate materials. Usually, the edge pressing of the plate is directly flattened, while in some cases it is necessary to bend the edge into an arc and fit the edge with the surface of the plate, or there are other edge pressing shapes. As shown in the above patent, the edge pressing mold is usually fixed with the lower mold. If different edge pressing shapes are required, the lower mold needs to be replaced as a whole, which is inconvenient to use. Utility Model Content

[0006] In view of the aforementioned existing problems, this utility model is proposed.

[0007] The purpose of this invention is to solve the problem that existing technologies cannot achieve different edge-pressing shapes.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] This utility model provides a pneumatic edge-pressing combination lower die for a bending machine, comprising a die base, a base, and a lower die. The die base is slidably mounted on the base via a cylinder. The lower die is mounted above the die base. The die base includes a top support and a fixed seat. The lower end of the lower die is mounted above the top support, and the fixed seat is located behind the bottom of the top support. The base has a U-shaped structure, and the fixed seat is slidably mounted on the base. An operating space is provided between the bottom of the top support, the front of the fixed seat, and the top of the base located on the front. A pressing die is slidably mounted on the fixed seat located in the operating space. The space between the pressing die and the top of the base, and between the bottom of the top support and the top of the pressing die, can be used to place the edge of the material for bending. When edge pressing is required, the cylinder extends to open the pressing die. Different edge pressing shapes can be selected, and the bending position of the material can be placed between the pressing die and the top of the base, or between the bottom of the top support and the top of the pressing die. During pressing, the cylinder retracts, and the upper die of the bending machine presses down to apply uniform force to the lower die, realizing edge pressing operations for different shapes of materials.

[0010] Furthermore, the fixed base has an assembly groove inside, and a sliding plate is slidably mounted in the assembly groove. The sliding plate is assembled and connected to the pressing mold through connecting blocks. Multiple connecting blocks are evenly arranged. The sliding plate is used to adjust the position between the pressing mold and the top support and the base, so as to achieve pressing operations of different shapes between the pressing mold and the top of the base or between the bottom of the top support and the top of the pressing mold.

[0011] Furthermore, the slide plate has an inner groove, the lower end of the cylinder is assembled and connected to the base, and the upper end of the cylinder passes through the lower part of the fixed seat and is assembled and connected to the upper end of the inner groove and the mounting groove. By retracting the cylinder, the mold base can be pulled down as a whole. When not in use, the mold is fitted between the top support and the base. When edge pressing is required, the cylinder is extended to open the mold. Different edge pressing shapes can be selected, and the material bending position can be placed between the mold and the top of the base or between the bottom of the top support and the top of the mold. When pressing, the cylinder is retracted, and the upper mold of the bending machine presses down to apply a uniform force to the lower mold to realize the edge pressing operation of the material.

[0012] Furthermore, the fixed base has multiple longitudinal grooves, the assembly groove is connected to the operating space through the longitudinal grooves, and the connecting block is slidably disposed in the longitudinal grooves. By opening multiple longitudinal grooves, the contact area between the connecting block and the fixed base can be increased when the connecting block slides on the fixed base, making the sliding more stable and further ensuring the stability of the pressing die.

[0013] Furthermore, symmetrical limit grooves are provided on the fixed seats on both sides of the longitudinal groove, and symmetrical limit strips are provided on both sides of the connecting block to slide and adapt to the limit grooves. Through the sliding adaptation of the limit strips and the limit grooves, the sliding of the connecting block on the longitudinal groove is only up and down, reducing the possibility of unstable movement caused by shaking.

[0014] Furthermore, a spring is provided in the assembly groove. The upper end of the spring is assembled and connected to the lower end of the mold, and the lower end is assembled and connected to the lower end of the assembly groove. When the cylinder is deployed, the spring loses pressure and resets, pushing the mold upward a certain distance to support the mold and the slide plate.

[0015] Furthermore, an adjustment groove is provided on the outer side of the fixed seat between adjacent longitudinal grooves. The mold is provided with a fixed strip that slides with the adjustment groove. A fixed shaft is provided inside the fixed strip. Moving rings are symmetrically slidably provided at both ends of the fixed shaft. Hinges are provided on both the base and the top support. The fixed strip is symmetrically arranged above and below. A connecting shaft is provided above each of the two moving rings. The end faces of the two connecting shafts are hinged to the hinge blocks. An isosceles triangle structure is formed between the two connecting shafts and the two moving rings. When the mold moves up and down, the height of the isosceles triangles located above and below the fixed strip changes synchronously, so as to achieve the effect that the distance between the mold and the top of the base and the distance between the bottom of the top support and the top of the mold is always the same.

[0016] The beneficial effects of this utility model are:

[0017] 1. When the present invention requires edge pressing, the cylinder extends to open the die and select different edge pressing shapes. The material bending position can be placed between the die and the base or between the top support and the die. When pressing, the cylinder retracts and, together with the upper die of the bending machine, applies uniform force to the lower die to achieve edge pressing operation on different shapes of the material.

[0018] 2. This utility model forms an isosceles triangle structure between two connecting shafts and two moving rings. When the mold moves up and down, the height of the isosceles triangles located above and below the fixed strip changes synchronously, achieving the effect that the distance between the mold and the top of the base and the distance between the bottom of the top support and the top of the mold is always the same. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1A perspective view of a pneumatic edge-pressing combination lower die for a bending machine provided by this utility model;

[0021] Figure 2 A perspective view of a pneumatic edge-pressing combination lower die for a bending machine provided by this utility model;

[0022] Figure 3 A schematic diagram of the steel plate placement structure of the pneumatic edge pressing combination lower die of a bending machine provided by this utility model;

[0023] Figure 4 A schematic diagram of the die base structure of a pneumatic edge pressing combination lower die for a bending machine provided by this utility model;

[0024] Figure 5 A schematic diagram of the position structure of the fixing strip and connecting shaft of the pneumatic pressing die assembly of a bending machine provided by this utility model;

[0025] Figure 6 This utility model provides a schematic diagram of the sliding plate structure of the pneumatic pressing edge combination lower die of a bending machine.

[0026] Legend:

[0027] 1. Mold base; 101. Top support; 102. Fixed base; 121. Assembly slot; 122. Slide plate; 123. Connecting block; 103. Operating space; 104. Press mold; 2. Base; 3. Lower mold; 4. Cylinder; 5. Inner groove; 6. Longitudinal groove; 601. Limiting groove; 602. Limiting strip; 7. Spring; 8. Adjusting groove; 801. Fixing strip; 802. Fixing shaft; 803. Moving ring; 9. Hinge block; 10. Connecting shaft. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, as used herein, "an embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] Please see Figures 1-6 This utility model provides a technical solution: a pneumatic pressing combination lower die for a bending machine, including a die base 1, a base 2 and a lower die 3. The die base 1 is slidably mounted on the base 2 via a cylinder 4. The lower die 3 is mounted on the top of the die base 1. The die base 1 includes a top support 101 and a fixed seat 102. The lower end of the lower die 3 is mounted on the top support 101. The fixed seat 102 is located behind the bottom of the top support 101. The base 2 is U-shaped. The fixed seat 102 is slidably mounted on the base 2. An operating space 103 is left between the bottom of the top support 101, the front of the fixed seat 102 and the top of the base 2 located on the front. A pressing die 104 is slidably mounted on the fixed seat 102 located in the operating space 103. The space between the pressing die 104 and the top of the base 2 and the space between the bottom of the top support 101 and the top of the pressing die 104 can be used to place the edge of the material for bending.

[0032] Specifically, when edge pressing is required, the cylinder 4 extends to open the die 104. Different edge pressing shapes can be selected, and the material bending position can be placed between the die 104 and the base 2 or between the top support 101 and the die 104. When pressing, the cylinder 4 retracts, and the upper die of the bending machine applies a uniform force to the lower die 3 in conjunction with the lower die, so as to realize the edge pressing operation of different shapes of materials.

[0033] In one embodiment, the mounting base 102 has an assembly groove 121 inside, and a sliding plate 122 is slidably mounted inside the assembly groove 121. The sliding plate 122 is assembled and connected to the mold 104 through a connecting block 123, and multiple connecting blocks 123 are evenly provided.

[0034] Furthermore, the sliding plate 122 is used to adjust the position between the mold 104 and the top support 101 and the base 2, thereby enabling different shaped pressing operations to be performed between the mold 104 and the base 2 or between the top support 101 and the mold 104.

[0035] In one embodiment, the slide plate 122 has an inner groove 5, the lower end of the cylinder 4 is assembled and connected to the base 2, and the upper end of the cylinder 4 passes through the lower part of the fixed seat 102 and the inner groove 5 and is assembled and connected to the upper end of the assembly groove 121.

[0036] Furthermore, by retracting the cylinder 4, the mold base 1 can be pulled down as a whole. When not in use, the pressure mold 104 fits between the top support 101 and the base 2. When edge pressing is required, the cylinder 4 is extended to open the pressure mold 104. Different edge pressing shapes can be selected, and the material bending position can be placed between the pressure mold 104 and the top of the base 2 or between the bottom of the top support 101 and the top of the pressure mold 104. When pressing, the cylinder 4 is retracted, and the upper mold of the bending machine presses down to apply a uniform force to the lower mold 3 to realize the edge pressing operation of the material.

[0037] In one embodiment, the fixed base 102 has multiple longitudinal grooves 6, the assembly groove 121 is connected to the operating space 103 through the longitudinal grooves 6, and the connecting block 123 is slidably disposed in the longitudinal grooves 6.

[0038] In actual use, by opening multiple longitudinal grooves 6, the contact area between the connecting block 123 and the fixed base 102 can be increased when the connecting block 123 slides on the fixed base 102, making the sliding more stable and further ensuring the stability of the pressing die 104 when pressing the edge.

[0039] In one embodiment, symmetrical limit grooves 601 are provided on the fixed seats 102 on both sides of the longitudinal groove 6, and symmetrical limit strips 602 that slide and adapt to the limit grooves 601 are provided on both sides of the connecting block 123.

[0040] Specifically, by sliding the limiting strip 602 and the limiting groove 601, the sliding of the connecting block 123 on the longitudinal groove 6 is limited to up and down sliding, reducing the possibility of unstable movement caused by shaking.

[0041] In one embodiment, a spring 7 is provided in the assembly groove 121. The upper end of the spring 7 is assembled and connected to the lower end of the mold 104, and the lower end is assembled and connected to the lower end of the assembly groove 121.

[0042] Furthermore, by means of the spring 7, when the cylinder 4 is deployed, the spring 7 loses pressure and resets, pushing the pressure mold 104 upward by a certain distance, which is used to support the pressure mold 104 and the slide plate 122.

[0043] In one embodiment, an adjustment groove 8 is provided on the outer side of the fixed seat 102 between adjacent longitudinal grooves 6. A fixed strip 801 is provided on the mold 104 and is slidably arranged with the adjustment groove 8. A fixed shaft 802 is provided inside the fixed strip 801. Moving rings 803 are symmetrically slidably arranged at both ends of the fixed shaft 802. A hinge block 9 is provided on both the base 2 and the top support 101. The fixed strip 801 is symmetrically arranged above and below. A connecting shaft 10 is provided above the two moving rings 803 respectively. The end faces of the two connecting shafts 10 are hinged to the hinge block 9.

[0044] In use, the isosceles triangle structure between the two connecting shafts 10 and the two moving rings 803 causes the height of the isosceles triangles located on the upper and lower sides of the fixed strip 801 to change synchronously when the mold 104 moves up and down, so as to achieve the effect that the distance between the mold 104 and the upper part of the base 2 and the distance between the lower part of the top support 101 and the upper part of the mold 104 is always the same.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pneumatic pressing die assembly for a bending machine, comprising a die base (1), a base (2), and a lower die (3), wherein the die base (1) is slidably mounted on the base (2) via a cylinder (4), and the lower die (3) is assembled above the die base (1), characterized in that: The mold base (1) includes a top support (101) and a fixed base (102). The lower end of the lower mold (3) is mounted on the top support (101). The fixed base (102) is located behind the bottom of the top support (101). The base (2) is U-shaped. The fixed base (102) is slidably mounted on the base (2). There is an operating space (103) between the bottom of the top support (101), the front of the fixed base (102), and the top of the base (2) on the front. A pressure mold (104) is slidably mounted on the fixed base (102) located in the operating space (103). The space between the pressure mold (104) and the top of the base (2) and between the bottom of the top support (101) and the top of the pressure mold (104) can be used to place the edge bend of the material.

2. The pneumatic pressing die combination for a bending machine according to claim 1, characterized in that, The fixed base (102) has an assembly groove (121) inside, and a sliding plate (122) is provided in the assembly groove (121) for sliding up and down. The sliding plate (122) is assembled and connected to the mold (104) through a connecting block (123). Multiple connecting blocks (123) are evenly provided.

3. The pneumatic pressing die combination for a bending machine according to claim 2, characterized in that, The slide plate (122) has an inner groove (5), the lower end of the cylinder (4) is assembled and connected to the base (2), and the upper end of the cylinder (4) passes through the lower part of the fixed seat (102) and the inner groove (5) and is assembled and connected to the upper end of the assembly groove (121).

4. The pneumatic pressing die combination for a bending machine according to claim 3, characterized in that, The fixed base (102) has multiple longitudinal grooves (6), the assembly groove (121) is connected to the operating space (103) through the longitudinal grooves (6), and the connecting block (123) is slidably disposed in the longitudinal grooves (6).

5. The pneumatic pressing die combination for a bending machine according to claim 4, characterized in that, Limiting grooves (601) are symmetrically provided on the fixing seats (102) on both sides of the longitudinal groove (6), and limiting strips (602) that slide and adapt to the limiting grooves (601) are symmetrically provided on both sides of the connecting block (123).

6. The pneumatic pressing die combination for a bending machine according to claim 5, characterized in that, A spring (7) is provided in the assembly groove (121). The upper end of the spring (7) is assembled and connected to the lower end of the mold (104), and the lower end is assembled and connected to the lower end of the assembly groove (121).

7. The pneumatic pressing die combination for a bending machine according to claim 6, characterized in that, An adjustment groove (8) is provided on the outer side of the fixed seat (102) between adjacent longitudinal grooves (6). A fixed strip (801) is provided on the mold (104) and is slidably arranged with the adjustment groove (8). A fixed shaft (802) is provided inside the fixed strip (801). Moving rings (803) are symmetrically slidably arranged at both ends of the fixed shaft (802). A hinge block (9) is provided on both the base (2) and the top support (101). The fixed strip (801) is symmetrically arranged above and below. A connecting shaft (10) is provided above the two moving rings (803). The end faces of the two connecting shafts (10) are hinged to the hinge block (9).

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