A four-sided double bending die mechanism

Abstract

A four-sided double bending die mechanism includes an upper die (10) and a lower die (20). The upper die (10) includes an upper die base (11), a punch plate (12), an upper template (13), and a slider assembly (14). The lower die (20) includes a lower die float plate (21) and a lower die base (22). Lower die bending blocks (23) are provided on all four sides of the lower die float plate (21). The lower die bending blocks (23) cooperate with the slider assembly (14) to form a... In the first bend, each of the lower die bending blocks (23) is slidably mounted with a side-push bending mechanism (24). The side-push bending mechanism (24), driven by the corresponding upper die insert (111), forms a second bend with the slider group (14). This utility model completes the double bending forming of the product by cooperating with the slider group, the lower die bending block, and the four sets of side-push bending mechanisms. This not only saves the number of mold sets, reduces the number of operators, and lowers costs, but also improves processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bending die technology, and in particular to a four-sided double bending die mechanism. Background Technology

[0002] With the continuous development of technology, many metal products of different shapes are processed by stamping to reduce costs. Forming is an indispensable key link in stamping, but the traditional stamping mode can no longer meet the current low-cost requirements.

[0003] In the existing technology, for polygonal stamping processes and products with multiple bends on the same side, the traditional stamping method is to select step-by-step bending according to the different bends of the product. The disadvantage is that more processes must be added to meet different requirements. Multiple stamping processes will increase the utilization rate of the machine, the number of operators, and the working hours, resulting in higher costs and lower processing efficiency.

[0004] Therefore, existing technologies need to be improved and enhanced. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a low-cost and high-efficiency four-sided double bending mold mechanism.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A four-sided double bending die mechanism includes an upper die and a lower die.

[0008] The upper mold includes an upper mold base, a punch plate, an upper template, and a slider group arranged sequentially from top to bottom. The upper mold base is provided with at least four upper mold inserts that pass through the upper template and extend out of the upper template. The punch plate is connected to the slider group.

[0009] The lower die includes a lower die float plate and a lower die base arranged sequentially from top to bottom. A lower die bending block is provided on all four sides of the lower die float plate. The lower die bending block cooperates with the slider group to form a first bend. Each lower die bending block is slidably mounted with a side push bending mechanism. The side push bending mechanism forms a second bend with the slider group under the drive of the corresponding upper die insert.

[0010] As a further embodiment of this utility model, four unloading screws are movably passed through the four corners of the upper mold base and connected to the upper template. Each of the unloading screws between the upper mold base and the upper template is fitted with a first spring.

[0011] As a further embodiment of this utility model, four connecting screws are movably passed through the middle of the upper mold base and connected to the punch plate, and a second spring is sleeved on the outside of each connecting screw between the upper mold base and the punch plate.

[0012] As a further embodiment of this utility model, the slider assembly includes a main slider fixed to the middle of the lower surface of the upper template, four corner sliders slidably mounted at the four corners of the main slider, and four side sliders slidably mounted on the four sides of the main slider. Each corner slider is connected to the striking plate through a driving rod, and each side slider is connected to a movable rod that movably passes through the upper template.

[0013] As a further embodiment of this utility model, each outer side wall of the slider assembly is provided with a bending cavity that cooperates with the corresponding side-pushing bending mechanism.

[0014] As a further embodiment of this utility model, a plurality of third springs are provided between the lower mold float plate and the lower mold base.

[0015] As a further embodiment of this utility model, 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 mounted on a fixed block, and the fixed block is fixed to the lower die base. A fourth spring is sleeved on the smooth rod between the bolt nut and the fixed block.

[0016] As a further embodiment of this utility model, the lower die bending block has a sliding groove, and the side push head performs linear reciprocating motion within the sliding groove.

[0017] As a further embodiment of this utility model, a guide post is provided at each of the four corners of the upper mold plate, and a guide sleeve corresponding to each guide post is provided at each of the four corners of the lower mold base.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] Due to the above structural design, the upper mold includes an upper mold base, a punch plate, an upper template, and a slider assembly. The upper mold base is equipped with an upper mold inserter. The punch plate is connected to the slider assembly. The lower mold includes a lower mold float plate and a lower mold base. Lower mold bending blocks are provided around the lower mold float plate. Each lower mold bending block is slidably mounted with a side-push bending mechanism that cooperates with the corresponding upper mold inserter. The double bending of the product is completed by the slider assembly, the lower mold bending blocks, and the four sets of side-push bending mechanisms. This not only saves the number of mold sets, reduces the number of operators, and lowers costs, but also improves processing efficiency. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Appendix Figure 2 This is a schematic diagram of the hierarchical structure of an embodiment of the present utility model;

[0022] Appendix Figure 3 This is a side view of an embodiment of the present utility model;

[0023] Appendix Figure 4 For the appendix Figure 3 AA section view;

[0024] Appendix Figure 5 For the appendix Figure 3 BB cross-sectional view.

[0025] The labels in the diagram are as follows:

[0026] 10 - Upper mold, 20 - Lower mold;

[0027] 11-Upper mold base, 12-Ejector plate, 13-Upper template, 14-Slider assembly, 15-Ejector screw, 16-First spring, 17-Connecting screw, 18-Second spring;

[0028] 111 - Upper mold inserter;

[0029] 141-Main slider, 142-Corner slider, 143-Side slider, 144-Drive rod, 145-Moving rod, 146-Bending cavity;

[0030] 21-Lower die floating plate, 22-Lower die base, 23-Lower die bending block, 24-Side push bending mechanism;

[0031] 241-Side push head, 242-Bolt, 243-Fixing block, 244-Fourth spring;

[0032] 231-Slide groove;

[0033] 131 - Guide post;

[0034] 221-Guide sleeve. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings:

[0036] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example

[0039] like Figure 1-5 As shown, this application discloses a four-sided double bending die mechanism, including an upper die 10 and a lower die 20.

[0040] The upper mold 10 includes an upper mold base 11, a punch plate 12, an upper template 13 and a slider group 14 arranged sequentially from top to bottom. The upper mold base 11 is provided with eight upper mold inserts 111 that pass through the upper template 13 and extend out of the upper template 13. The eight upper mold inserts 111 are arranged in pairs. The punch plate 12 is connected to the slider group 14.

[0041] The lower mold 20 includes a lower mold float plate 21 and a lower mold base 22 arranged sequentially from top to bottom. Lower mold bending blocks 23 are provided on all four sides of the lower mold float plate 21. The lower mold bending blocks 23 cooperate with the slider assembly 14 to form a first bend. Each lower mold bending block 23 is slidably mounted with a side-push bending mechanism 24. The side-push bending mechanism 24, driven by the corresponding upper mold insert 111, forms a second bend with the slider assembly 14. Through the above structural design, before mold closing, the material sheet is first placed on the lower mold float plate 21. When the mold is closed, the upper mold 10 moves downward, and the slider group 14 first contacts and presses down on the material sheet, then contacts the lower mold bending block 23 to complete the first bending step. The upper mold 10 continues to move downward, and every two upper mold inserts 111 drive the side-push bending mechanism 24 to perform the second bending step on the material sheet. When the mold is opened, after the upper mold 10 moves downward to the dead point, the upper mold 10 moves upward, the side-push bending mechanism 24 resets, and the upper mold 10 continues to move upward, driving the slider group 14 to disengage from the product, completing the entire unloading process. This not only saves on the number of mold sets, reduces the number of operators, and lowers costs, but also improves processing efficiency.

[0042] Specifically, four ejector screws 15 move through the four corners of the upper mold base 11 and connect to the upper template 13. Each ejector screw 15 between the upper mold base 11 and the upper template 13 is fitted with a first spring 16. When the mold is closed, the upper mold 10 moves downward, with the upper template 13 contacting the material sheet first. The upper mold base 11 continues to move downward along the ejector screws 15, and the first spring 16 is compressed. The first spring 16 acts as a buffer, reducing the damage caused by direct impact and extending its service life. At the same time, after the bending process is completed, the first spring 16 provides a continuous thrust to help the upper template 13 push the material sheet away from the upper template 13, ensuring a smoother unloading process.

[0043] Specifically, four connecting screws 17 move through the middle of the upper mold base 11 and connect to the punch plate 12. Each connecting screw 17 between the upper mold base 11 and the punch plate 12 is fitted with a second spring 18. When the mold is closed, the upper mold 10 moves downward. Since the punch plate 12 is connected to the module group 14, the slider group 14 contacts the material sheet first. The upper mold base 11 continues to move downward along the connecting screws 17. The second spring 18 is compressed. The second spring 18 plays a buffering role, reducing damage caused by direct impact and extending service life. At the same time, after the bending process is completed, the second spring 18 also provides a continuous thrust to help the slider group 14 push the material sheet away from the slider group 14, ensuring a smoother unloading process.

[0044] Specifically, the slider assembly 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 at 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 corner slider 142 is connected to the punch plate 12 via a drive rod 144, and each side slider 143 is connected to a movable rod 145 that movably passes through the upper template 13. Each outer side wall of the slider assembly 14 has a bending cavity 146 that cooperates with the corresponding side-pushing bending mechanism 24. In specific implementation, the four corners and four sides of the main slider 141 are inclined surfaces, with the bottom of the inclined surfaces inclined towards the middle of the main slider. Each inclined surface is provided with a slide rail, and the corner sliders 142 and side sliders 143 can slide along the corresponding slide rails. When the mold is closed, the upper mold 10 moves downward, and the slider assembly 14 first contacts the material sheet. As the upper mold 10 continues to move downward, the slider assembly 14 presses against the material sheet. The sheet material on the lower die floating plate cooperates with the lower die bending block 23 to perform the first bend on the sheet material, that is, the four edges of the sheet material are bent upwards; the upper die 10 continues to descend, and the eight upper die inserts 111 on the upper die base 11 drive the four side-push bending mechanisms 24 into the bending cavity 146 of the slider group 14, that is, bend the upward-bent edges of the sheet material inwards, completing the second bend; when the die is opened, the upper die 10 moves upwards, the upper die inserts 111 no longer drive the side-push bending mechanisms 24, and the side-push bending mechanisms 24 are reset. The upper mold 10 continues to move upward, and the main slider 141 moves upward under the action of the upper template 13 and separates from the material under the action of the first spring 16. As the upper mold 10 continues to move upward, the upper template 13 first drives the four side sliders 143 to move upward through the four movable rods 145, while the four corner sliders 142 slide downward along the inclined surface of the main slider 141 under the action of the beater plate 12, so that the four corner sliders 142 approach each other and separate from the material under the action of the second spring 18, thus completing the entire unloading process.

[0045] Specifically, four third springs (not shown in the figure) are provided between the lower die float plate 21 and the lower die base 22. When stamping is performed, the third springs can absorb impact energy, reduce the direct impact force on the die assembly, and extend the service life of the die. After the double bending process is completed, the elastic force provided by the third springs helps to push the sheet out of the die, which is convenient for subsequent operations.

[0046] Specifically, the side-push bending mechanism 24 includes a side pusher 241 and two bolts 242 connected to the side pusher 241. The bolts 242 are movably mounted on a fixing block 243, which is fixed to the lower die base 22. A fourth spring 244 is sleeved on the smooth rod between the nut of the bolt 242 and the fixing block 243. The lower die bending block 23 has a sliding groove 231, and the side pusher 241 performs linear reciprocating motion within the sliding groove 231. When the die is closed, the two upper die inserts 111 drive the corresponding side pusher 241 to slide along the sliding groove 231 until it reaches the bending cavity 146 of the slider group 14 to complete the second bending of the material sheet. When the die is opened, after the upper die inserts 111 move upward, the side pusher 241 returns to its original position under the action of the two fourth springs 244. In specific implementation, a shim is set between the nut and the fourth spring to reduce direct friction between them, reduce the risk of wear, and extend the service life of the side-push bending mechanism.

[0047] Specifically, a guide post 131 is provided at each of the four corners of the upper mold plate 13, and a guide sleeve 221 corresponding to the guide post 131 is provided at each of the four corners of the lower mold base 22. The cooperation between the guide sleeve 221 and the guide post 131 can provide very precise linear motion guidance for the upper mold, ensuring that the upper mold can move smoothly along the predetermined path.

[0048] In summary, this utility model, through the above-described structural design, overcomes the shortcomings of the prior art and features a reasonable structure, low cost, and high efficiency.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-sided double bending die mechanism, comprising an upper die (10) and a lower die (20), characterized in that: The upper mold (10) includes an upper mold base (11), a punch plate (12), an upper template (13), and a slider group (14) arranged sequentially from top to bottom. The upper mold base (11) is provided with at least four upper mold inserts (111) that pass through the upper template (13) and extend out of the upper template (13). The punch plate (12) is connected to the slider group (14). The lower die (20) includes a lower die float plate (21) and a lower die base (22) arranged sequentially from top to bottom. A lower die bending block (23) is provided on all four sides of the lower die float plate (21). The lower die bending block (23) cooperates with the slider group (14) to form a first bend. 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 bend with the slider group (14) under the drive of the corresponding upper die insert (111).

2. The four-sided double bending die mechanism according to claim 1, characterized in that: Four ejector screws (15) are movably passed through the four corners of the upper mold base (11) and connected to the upper template (13). Each ejector screw (15) between the upper mold base (11) and the upper template (13) is fitted with a first spring (16).

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

4. The four-sided double bending die 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 installed at the four corners of the main slider (141), and four side sliders (143) slidably installed on the four sides of the main slider (141). Each corner slider (142) is connected to the beater (12) through a drive rod (144), and each side slider (143) is connected to a movable rod (145) that is movably inserted through the upper template (13).

5. The four-sided 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-sided double bending die mechanism according to claim 5, characterized in that: Several third springs are provided between the lower mold float plate (21) and the lower mold base (22).

7. The four-sided double bending die 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 mounted on a fixing block (243), which is fixed to the lower die base (22). A fourth spring (244) is sleeved on the smooth rod between the nut of the bolt (242) and the fixing block (243).

8. The four-sided double bending die mechanism according to claim 7, characterized in that: The lower die bending block (23) has a groove (231), and the side push head (241) moves in a straight line within the groove (231).

9. The four-sided double bending die mechanism according to claim 8, characterized in that: Each of the four corners of the upper template (13) is provided with a guide post (131), and each of the four corners of the lower mold base (22) is provided with a guide sleeve (221) corresponding to the guide post (131).

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