Four-side double-bending die mechanism

Abstract

A four-edge double-bending die mechanism comprises an upper die (10) and a lower die (20), and the upper die (10) comprises an upper die base (11), a beating plate (12), an upper die plate (13) and a sliding block set (14; the lower die (20) comprises a lower die floating plate (21) and a lower die base (22), lower die bending blocks (23) are arranged on the peripheral sides of the lower die floating plate (21) and matched with the sliding block set (14) to form first-time bending, each lower die bending block (23) is provided with a side pushing bending mechanism (24) in a sliding mode, and the side pushing bending mechanisms (24) are arranged on the lower die floating plate (21) and matched with the sliding block set (14) to form second-time bending. And the lateral pushing bending mechanism (24) is driven by the corresponding upper die slotting tool (111) to form secondary bending with the sliding block group (14). The sliding block set is matched with the lower die bending block and the four side pushing bending mechanisms to complete product double-bending forming, the number of sets of dies is reduced, the number of operators is reduced, the cost is reduced, and the machining efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bending die, in particular to a four-edge double-bending die mechanism. BACKGROUND

[0002] With the continuous development of science and technology, many metal products of different shapes are processed by stamping to reduce costs. Forming is an indispensable part of stamping processing. The traditional stamping mode cannot meet the current low-cost requirements.

[0003] In the prior art, polygonal stamping processing and products with multiple bends on the same edge are used. The traditional stamping method is to select step-by-step bending according to the different bending degrees of the product. The disadvantage is that multiple processes must be added to meet different requirements. The use rate of the machine and the number of operators and working hours will increase, resulting in increased costs and reduced processing efficiency.

[0004] Therefore, the prior art needs to be improved and improved. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a four-edge double-bending die mechanism with low cost and high efficiency.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: A four-edge double-bending die mechanism includes an upper die and a lower die, The upper die includes an upper die seat, a punch plate, an upper die plate and a slider group arranged in order from top to bottom, at least four upper die inserts are provided on the upper die seat and extend through the upper die plate, and the punch plate is connected to the slider group; The lower die includes a lower die floating plate and a lower die seat arranged in order from top to bottom, a lower die bending block is arranged on the periphery of the lower die floating plate, the lower die bending block cooperates with the slider group to form the first bending, and a side push bending mechanism is slidingly installed on each lower die bending block. The side push bending mechanism is driven by the corresponding upper die insert and forms the second bending with the slider group.

[0007] As a further scheme of the present application, four discharge screws are movably connected to the upper die plate through the four corners of the upper die seat, and each discharge screw outside the upper die seat and the upper die plate is externally sleeved with a first spring.

[0008] As a further scheme of the present application, four connecting screws are movably connected to the punch plate through the middle part of the upper die seat, and each connecting screw between the upper die seat and the punch plate is externally sleeved with a second spring.

[0009] As a further solution of the present invention, the slider group includes a main slider fixed to the middle part of the lower surface of the upper template, four corner sliders slidably installed on the four corners of the main slider, and four side sliders slidably installed on the four sides of the main slider. Each of the corner sliders is connected to the hitting plate through a driving rod, and each of the side sliders is connected to a movable rod movably passed through the upper template.

[0010] As a further solution of the present invention, a bending cavity cooperating with the corresponding side-pushing bending mechanism is provided on each outer side wall of the slider group.

[0011] As a further solution of the present invention, a plurality of third springs are provided between the lower die floating plate and the lower die base.

[0012] As a further solution of the present invention, the side push bending mechanism includes a side push head and at least one bolt connected to the side push head, the bolt is movably placed on a fixed block, the fixed block is fixed on the lower mold base, and a fourth spring is provided on the outer sleeve of the polished rod between the nut of the bolt and the fixed block.

[0013] As a further solution of the present invention, a slide groove is provided on the lower die bending block, and the side push head performs linear reciprocating motion in the slide groove.

[0014] As a further solution of the present invention, a guide column is provided on each of the four corners of the upper mold plate, and a guide sleeve corresponding to the guide column is provided on each of the four corners of the lower mold base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Due to the adoption of the above-mentioned structural design, the upper die includes an upper die base, a beating plate, an upper template and a slider group, an upper die blade is provided on the upper die base, the beating plate is connected to the slider group, the lower die includes a lower die floating plate and a lower die base, and lower die bending blocks are provided on the four sides of the lower die floating plate. Each lower die bending block is slidably mounted with a side-push bending mechanism that cooperates with the corresponding upper die blade. The double-bending forming of the product is completed through the cooperation of the slider group, the lower die bending block and the four groups of side-push bending mechanisms, which not only saves the number of mold sets, reduces the number of operators, and reduces costs, but also improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attachment Figure 1 Schematic diagram of the structure of an embodiment of the present invention; Attachment Figure 2 Schematic diagram of the hierarchical structure of an embodiment of the present invention; Attachment Figure 3 A side view of an embodiment of the present invention; Attachment Figure 4 For attachment Figure 3 AA section view; Attachment Figure 5 For attachment Figure 3 BB cross-sectional view.

[0017] The numbers in the figure are: 10-upper die, 20-lower die; 11-upper die base, 12-beating plate, 13-upper die plate, 14-slider assembly, 15-unloading screw, 16-first spring, 17-connecting screw, 18-second spring; 111- upper die insert; 141-main slider, 142-corner slider, 143-side slider, 144-driving rod, 145-movable rod, 146-bending cavity; 21-lower die floating plate, 22-lower die base, 23-lower die bending block, 24-side push bending mechanism; 241-side thrust head, 242-bolt, 243-fixing block, 244-fourth spring; 231-chute; 131-guide column; 221-Guide sleeve. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings: The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0019] In the description of the application, the meaning of "several", "a plurality of" is two or more than two, unless otherwise expressly specifically limited. In this application, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is less than the second feature in horizontal height. Embodiments

[0021] As shown in Figure 1-5 The four-edge double-bending die mechanism of the application includes an upper die 10 and a lower die 20, The upper die 10 includes an upper die seat 11, a beating plate 12, an upper die plate 13 and a slider group 14 arranged in sequence from top to bottom, eight upper die knives 111 are arranged on the upper die seat 11 and extend through the upper die plate 13, two upper die knives 111 form a group, the beating plate 12 is connected with the slider group 14; The lower die 20 comprises a lower die floating material plate 21 and a lower die seat 22 arranged in sequence from top to bottom, a lower die bending block 23 is arranged on each side of the lower die floating material plate 21, the lower die bending block 23 cooperates with the slider group 14 to form the first bending, and a side push bending mechanism 24 is slidingly installed on each lower die bending block 23, the side push bending mechanism 24 is driven by the corresponding upper die insert knife 111 to form the second bending with the slider group 14. Through the above structural design, before the mold is closed, the material sheet is first placed on the lower die floating material plate 21, when the mold is closed, the upper die 10 descends, the slider group 14 first contacts and presses the material sheet, and contacts the lower die bending block 23 to complete the first step of bending; the upper die 10 continues to descend, and every two upper die insert knives 111 drive a side push bending mechanism 24 to perform the second step of bending on the material sheet; when the mold is opened, after the upper die 10 descends to the dead point, the upper die 10 ascends, the side push bending mechanism 24 resets, and the upper die 10 continues to ascend to drive the slider group 14 to separate from the product, thereby completing the entire material removal process. Not only the number of mold sets is saved, the number of operators is reduced, the cost is reduced, but also the processing efficiency is improved.

[0022] Specifically, four unloading screws 15 movably pass through four corners of the upper die seat 11 and are connected with the upper die plate 13, and a first spring 16 is sleeved outside each unloading screw 15 between the upper die seat 11 and the upper die plate 13. When the mold is closed, the upper die 10 descends, wherein the upper die plate 13 first contacts the material sheet, the upper die seat 11 continues to descend along the unloading screw 15, the first spring 16 is compressed, the first spring 16 plays a buffering role to reduce damage caused by direct impact and prolong the service life, and meanwhile, when the bending process is completed, the first spring 16 provides a continuous pushing force to help the upper die plate 13 push the material sheet away from the upper die plate 13, thereby ensuring that the material removal process is smoother.

[0023] Specifically, four connecting screws 17 movably pass through the middle part of the upper die seat 11 and are connected with the beating plate 12, and a second spring 18 is sleeved outside each connecting screw 17 between the upper die seat 11 and the beating plate 12. When the mold is closed, the upper die 10 descends, wherein the slider group 14 first contacts the material sheet because the beating plate 12 is connected with the slider group 14, the upper die seat 11 continues to descend along the connecting screw 17, the second spring 18 is compressed, the second spring 18 plays a buffering role to reduce damage caused by direct impact and prolong the service life, and meanwhile, when the bending process is completed, the second spring 18 also provides a continuous pushing force to help the slider group 14 push the material sheet away from the slider group 14, thereby ensuring that the material removal process is smoother.

[0024] Specifically, the slider group 14 includes a main slider 141 fixed to the middle of the lower surface of the upper die plate 13, four corner sliders 142 slidingly installed at the four corners of the main slider 141, and four side sliders 143 slidingly installed at the four sides of the main slider 141. Each of the corner sliders 142 is connected to the punch plate 12 through a driving rod 144, and each of the side sliders 143 is connected to a movable rod 145 movably arranged in the upper die plate 13. Each of the outer side walls of the slider group 14 is provided with a bending cavity 146 matched with the corresponding side push bending mechanism 24. In a specific implementation, the four corners and the four sides of the main slider 141 are all inclined surfaces, the bottom end of each inclined surface is inclined towards the middle of the main slider, and each inclined surface is provided with a sliding rail. The corner sliders 142 and the side sliders 143 can slide along the corresponding sliding rails. When the mold is closed, the upper die 10 descends, the slider group 14 first contacts the material sheet, and as the upper die 10 continues to descend, the slider group 14 presses the material sheet on the lower die floating material plate to cooperate with the lower die bending block 23 to perform the first bending of the material sheet, i.e., the four edges of the material sheet are bent upwards. The upper die 10 continues to descend, and the eight upper die insert knives 111 on the upper die seat 11 drive the four side push bending mechanisms 24 into the bending cavities 146 of the slider group 14, i.e., the edge part of the material sheet bent upwards is bent inwards to complete the second bending. When the mold is opened, the upper die 10 ascends, the upper die insert knives 111 no longer drive the side push bending mechanisms 24, the side push bending mechanisms 24 reset, the upper die 10 continues to ascend, and the main slider 141 ascends under the action of the upper die plate 13 and separates from the material sheet under the action of the first spring 16. As the upper die 10 continues to ascend, the upper die plate 13 first drives the four side sliders 143 to ascend through the four movable rods 145, while the four corner sliders 142 slide downwards along the inclined surfaces of the main slider 141 under the action of the punch plate 12, so that the four corner sliders 142 approach each other and separate from the material sheet under the action of the second spring 18, thereby completing the entire material removal process.

[0025] Specifically, the lower die floating material plate 21 and the lower die seat 22 are provided with four third springs (not shown in the figure). When stamping is performed, the third springs can absorb impact energy, reduce the direct impact force on the mold assembly, prolong the service life of the mold, and after completing the double-bending process, the elastic force provided by the third springs helps to push the material sheet out of the mold, facilitating subsequent operations.

[0026] Specifically, the side pushing bending mechanism 24 comprises a side pushing head 241 and two bolts 242 connected with the side pushing head 241, the bolts 242 movably pass through a fixed block 243, the fixed block 243 is fixed on the lower die base 22, the light pole outer sleeve between the nut of the bolt 242 and the fixed block 243 is provided with a fourth spring 244, the lower die bending block 23 is provided with a sliding groove 231, the side pushing head 241 makes linear reciprocating motion in the sliding groove 231, when the mold is closed, two upper die inserts 111 drive a corresponding side pushing head 241 to slide along the sliding groove 231 and complete the second bending of the material sheet in the bending cavity 146 of the slide block group 14, when the mold is opened, after the upper die inserts 111 go up, the side pushing head 241 is reset under the action of the two fourth springs 244.

[0027] Specifically, the four corners of the upper die plate 13 are provided with a guide column 131, and the four corners of the lower die base 22 are provided with a guide sleeve 221 corresponding to the guide column 131, the cooperation of the guide sleeve 221 and the guide column 131 can provide very accurate linear motion guide for the upper die, and ensure that the upper die can smoothly move along the predetermined path.

[0028] In summary, the application solves the problems in the prior art through the above structural design, has the characteristics of reasonable structure, low cost, high efficiency and the like.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A four-side double-bending die mechanism, comprising an upper die (10) and a lower die (20), characterized in that: The upper die (10) comprises an upper die base (11), a beating plate (12), an upper die plate (13) and a slider group (14) arranged in order from top to bottom, the upper die base (11) is provided with at least four upper die inserts (111) passing through the upper die plate (13) and extending out of the upper die plate (13), and the beating plate (12) is connected to the slider group (14); The lower die (20) comprises a lower die floating plate (21) and a lower die base (22) arranged in sequence from top to bottom. A lower die bending block (23) is provided on all four sides of the lower die floating plate (21). The lower die bending block (23) cooperates with the slider group (14) to form a first bending. Each lower die bending block (23) is slidably mounted with a side push bending mechanism (24). The side push bending mechanism (24) forms a second bending with the slider group (14) under the drive of the corresponding upper die insert (111).

2. The four-side double-bending mold mechanism according to claim 1, characterized in that: Four unloading screws (15) are movable through the four corners of the upper die base (11) and are connected to the upper die plate (13). Each of the unloading screws (15) between the upper die base (11) and the upper die plate (13) is covered with a first spring (16).

3. The four-side double-bending mold mechanism according to claim 2, characterized in that: Four connecting screws (17) are movably passed through the middle of the upper die base (11) and connected to the beating plate (12), and each of the connecting screws (17) between the upper die base (11) and the beating plate (12) is sheathed with a second spring (18).

4. The four-side double-bending mold mechanism according to claim 3, characterized in that: The slider group (14) includes a main slider (141) fixed to the middle of the lower surface of the upper template (13), four corner sliders (142) slidably mounted on the four corners of the main slider (141), and four side sliders (143) slidably mounted on the four sides of the main slider (141), each of the corner sliders (142) is connected to the beating plate (12) through a driving rod (144), and each of the side sliders (143) is connected to a movable rod (145) movably inserted into the upper template (13).

5. The four-side double-bending die mechanism according to claim 4, characterized in that: Each outer side wall of the slider group (14) is provided with a bending cavity (146) that cooperates with the corresponding side push bending mechanism (24).

6. The four-side double-bending die mechanism according to claim 5, characterized in that: A plurality of third springs are provided between the lower die floating plate (21) and the lower die seat (22).

7. The four-side double-bending mold mechanism according to claim 6, characterized in that: The side push bending mechanism (24) includes a side push head (241) and at least one bolt (242) connected to the side push head (241), the bolt (242) is movably inserted into a fixed block (243), the fixed block (243) is fixed to the lower die base (22), and a fourth spring (244) is provided on the polished rod outer sleeve between the nut of the bolt (242) and the fixed block (243).

8. The four-side double-bending mold mechanism according to claim 7, characterized in that: The lower die bending block (23) is provided with a slide groove (231), and the side push head (241) performs linear reciprocating motion in the slide groove (231).

9. The four-side double-bending mold mechanism according to claim 8, characterized in that: A guide column (131) is provided on each of the four corners of the upper mold plate (13), and a guide sleeve (221) corresponding one-to-one to the guide column (131) is provided on each of the four corners of the lower mold base (22).

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