Floating type bending device

Abstract

The utility model provides a floating type bending device which comprises an upper die and a lower die, an upper bending male die is arranged in the upper die, a lower receding groove and a lower bending female die are arranged in the lower die, the lower bending female die is arranged in the lower receding groove in an up-and-down moving mode, and the upper bending male die and the lower bending female die are arranged in the lower receding groove in an up-and-down moving mode. A first lower ejector rod and a first lower spring which are used for supporting the lower bending female die upwards are arranged below the lower bending female die, and a first receding groove is formed in the position, corresponding to a product boss, of the side face of the lower bending female die. The utility model solves the problem that when the existing die is used for bending parts with large-range bosses on bending edges, the parts are easy to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of progressive die processing, in particular to a floating bending device. Background Art

[0002] The progressive die is a more advanced die in the current production and processing. It combines multiple dies together and integrates the functions of multiple single-process dies, thus realizing continuous automated production of multiple processes. It has the advantages of good processing quality, high production efficiency, and less operator requirements. It is a major direction of mold design development at this stage. Figure 1 The seat belt buckle base product shown in the figure has a lower bending die fixed in the lower die. Since there is a boss on the bending edge of the product, it is necessary to set a avoidance groove on the side of the lower bending die. When the material is automatically fed in the progressive die, floating material is required. When floating material is required, a higher avoidance groove is set on the side of the lower bending die, which causes the avoidance groove to be too close to the lower bending R angle, resulting in poor strength of the lower bending die and easy damage. If a single punch die is chosen when opening the mold to solve this problem, it will greatly affect production efficiency. Therefore, it is necessary to invent a floating bending device for a progressive die. Utility Model Content

[0003] The utility model aims to provide a floating bending device which can be used in a progressive die and solves the problem that the existing die is prone to damage when bending parts with large-range bosses on the bending edges.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A floating bending device comprises an upper die and a lower die, wherein the upper die is provided with an upper bending punch, the lower die is provided with a lower avoidance groove and a lower bending die, the lower bending die is movably arranged in the lower avoidance groove, a first lower push rod and a first lower spring for lifting the lower bending die upward are arranged below the lower bending die, and a first avoidance groove is provided on the side surface of the lower bending die corresponding to the position of the product boss.

[0006] Furthermore, the upper die includes an upper die base, and an upper pad plate and an upper fixed plate which are sequentially stacked and fixed below the upper die base, and the upper bending punch is fixedly connected to the upper unloading plate; the lower die includes a lower die base, and a lower fixed plate and a lower concave template which are sequentially stacked and fixed above the lower die base, and the lower avoidance groove and the lower bending die are arranged in the lower concave template.

[0007] Furthermore, the upper mold also includes an upper unloading back plate and an upper unloading plate hung on the upper fixed plate, the upper unloading back plate is fixedly connected to the upper unloading plate, the upper bending punch passes through the upper unloading back plate and the upper unloading plate, and the upper bending punch is movably connected to the upper unloading back plate and the upper unloading plate.

[0008] Furthermore, an upper limit groove is provided on one side of the upper unloading plate close to the upper bending punch, and a limit stop is fixedly provided in the lower avoidance groove toward the upper limit groove, and the limit stop is used to prevent the upper bending punch from deflecting.

[0009] Furthermore, an upper spring is provided in the upper die, and the upper spring is used to push open the upper unloading plate.

[0010] Furthermore, a third lower ejector rod and a third lower spring are provided in the lower die, and the third lower ejector rod passes through the lower die base, the lower fixing plate and the lower concave template from bottom to top.

[0011] Furthermore, a second lower ejector rod and a second lower spring are provided in the lower die. The second lower ejector rod passes through the die through hole of the lower bending die from bottom to top, and the second lower ejector rod is used to push against the lower end surface of the product.

[0012] Furthermore, a limiting block is fixedly arranged in the lower avoidance groove, and the side surface of the limiting block cooperates with the hanging platform on the side surface of the lower bending die to limit the floating height of the lower bending die.

[0013] Furthermore, the bottom surface of the upper bending punch is provided with an upper bending R angle groove for bending the bending edge of the product downward, and the top surface of the lower bending die is provided with a lower bending R angle for matching the upper bending R angle groove.

[0014] Furthermore, a second avoidance groove for avoiding the hook body of the product is provided on the side surface of the lower bending die.

[0015] The beneficial effects of the utility model are as follows: the utility model avoids the problem of easy damage to parts with large-scale bosses on the bending edges during bending by arranging a lower bending die that can move up and down in the lower die, thereby greatly reducing production costs, playing an important role in ensuring stable product quality, and also improving production efficiency.

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a product structure diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of an open state of a floating bending device of the utility model.

[0019] Figure 3 It is a cross-sectional view of a floating bending device of the utility model in a closed state.

[0020] Figure 4 It is a cross-sectional view of the matching structure of the upper bending punch and the lower bending die in the utility model.

[0021] Figure 5 It is a cross-sectional view of the lower bending die in the utility model. DETAILED DESCRIPTION

[0022] like Figures 2 to 5 A floating bending device is shown, comprising an upper die 10 and a lower die 20, wherein the upper die 10 is provided with an upper bending punch 31, and the lower die 20 is provided with a lower avoidance groove 2011 and a lower bending die 41, wherein the lower bending die 41 is movably arranged in the lower avoidance groove 2011, and a first lower push rod 44 and a first lower spring 45 for lifting the lower bending die 41 upward are arranged below the lower bending die 41, and a first avoidance groove 412 is arranged on the side of the lower bending die 41 corresponding to the position of the product boss 1002.

[0023] Preferably, in combination with the above scheme, in order to facilitate the assembly of various parts in the mold, the upper mold 10 includes an upper mold base 101, and an upper pad 102 and an upper fixed plate 103 which are sequentially stacked and fixed below the upper mold base 101, and the upper bending punch 31 is fixedly connected to the upper unloading plate 105; the lower mold 20 includes a lower mold base 203, and a lower fixed plate 202 and a lower concave mold plate 201 which are sequentially stacked and fixed above the lower mold base 203, and the lower avoidance groove 2011 and the lower bending die 41 are arranged in the lower concave mold plate 201.

[0024] Preferably, in combination with the above scheme, in order to facilitate unloading, the upper mold 10 also includes an upper unloading back plate 104 and an upper unloading plate 105 hung on the upper fixed plate 103, the upper unloading back plate 104 is fixedly connected to the upper unloading plate 105, the upper bending punch 31 passes through the upper unloading back plate 104 and the upper unloading plate 105, and the upper bending punch 31 is movably connected to the upper unloading back plate 104 and the upper unloading plate 105.

[0025] Preferably, in combination with the above scheme, in order to prevent the upper bending punch 31 from being slightly offset due to lateral force during the product bending and forming process, an upper limit groove 1051 is provided on the side of the upper unloading plate 105 close to the upper bending punch 31, and a limiting support block 43 is fixedly provided in the lower avoidance groove 2011 at a position facing the upper limit groove 1051, and the limiting support block 43 is used to prevent the upper bending punch 31 from offset.

[0026] Preferably, in combination with the above solution, in order to provide an elastic force for unloading, an upper spring 32 is provided in the upper die 10 , and the upper spring 32 is used to push open the upper unloading plate 105 .

[0027] Preferably, in combination with the above scheme, in order to play the role of material guiding and floating, the lower mold 20 is provided with a third lower push rod 48 and a third lower spring 49, and the third lower push rod 48 passes through the lower mold base 203, the lower fixed plate 202, and the lower concave mold plate 201 from bottom to top.

[0028] Preferably, in combination with the above scheme, in order to facilitate the unloading of the lower bending die 41, a second lower push rod 46 and a second lower spring 47 are provided in the lower die 20, and the second lower push rod 46 passes through the die through hole 414 of the lower bending die 41 from bottom to top, and the second lower push rod 46 is used to push against the lower end surface of the product 100.

[0029] Preferably, in combination with the above solution, a limiting block 42 is fixedly provided in the lower avoidance groove 2011 , and the side surface of the limiting block 42 cooperates with the hanging platform 415 on the side surface of the lower bending die 41 to limit the floating height of the lower bending die 41 .

[0030] Preferably, in combination with the above scheme, in order to better cooperate with each other to bend the product 100, the bottom surface of the upper bending punch 31 is provided with an upper bending R-angle groove 311 for bending the bending edge 1001 of the product downward, and the top surface of the lower bending die 41 is provided with a lower bending R angle 411 for cooperating with the upper bending R-angle groove 311.

[0031] Preferably, in combination with the above scheme, in order to avoid the hook body 1002 at the lower end of the product when the bending edge 1001 of the product 100 is bent, a second avoidance groove 413 for avoiding the hook body 1002 of the product is provided on the side of the lower bending die 41.

[0032] The working principle of this utility model:

[0033] In this embodiment, the moving direction of the material belt is Figure 2 and Figure 3 When the punch press drives the upper die 10 to move upward to the top, the feeder will have sent the product 100 blank to the top of the lower concave template 201 by relying on the material belt. Under the action of the upper spring 32 (nitrogen spring), the unloading mechanism (upper unloading back plate 104, upper unloading plate 105) in the upper die 10 first presses the product 100 blank and presses the lower bending die 41 downward. At this time, the first lower ejector rod 44 and the second lower ejector rod 46 are also forced to move downward until the lower end surface of the lower bending die 41 contacts the lower fixed plate 202;

[0034] As the punch press continues to move downward, under the reaction force of the lower die 20, the upper spring 32 of the upper die retracts (the spring force of the upper spring 32 is the largest, the spring forces of the second lower spring 47 and the third lower spring 49 are the same, and the spring force of the first lower spring 45 is the smallest), and the upper bending punch 31 extends out of the upper unloading plate 105, slowly contacts the part of the product 100 blank that needs to be bent, and the upper bending R angle groove 311 of the upper bending punch 31 matches with the lower bending R angle 411 of the lower bending die 41, so as to bend the bending edge 1001 of the product 100 into shape;

[0035] After the stamping is completed, the punch press drives the upper die 10 to gradually move upward, the upper bending punch 31 is first removed from the material, the first lower spring 45, the second lower spring 47, and the third lower spring 49 slowly recover, and the lower bending die 41 also floats upward. At this time, the lower bending die 41 is affected by the hanging platform structure of the limit block 42 to limit the floating height, and the second lower ejector rod 46 also moves upward to eject the product 100 to complete the removal of the material.

[0036] Since the utility model is provided with a floating lower bending die 41, it is not necessary to dig a high avoidance groove 412 at the contact point between the lower bending die 41 and the product bending edge 1001 when floating the material, thereby ensuring the structural strength of the lower bending R angle 411 and greatly improving the service life of the parts.

[0037] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain posture shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0038] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or they are directly applied to other occasions without improvement, they all fall within the protection scope of the utility model.

Claims

1. A floating bending device, comprising an upper die (10) and a lower die (20), wherein the upper die (10) is provided with an upper bending convex die (31), and the lower die (20) is provided with a lower avoidance groove (2011) and a lower bending concave die (41), wherein: The lower bending die (41) is movably arranged in the lower avoidance groove (2011) up and down, and a first lower push rod (44) and a first lower spring (45) for lifting the lower bending die (41) upward are arranged below the lower bending die (41), and a first avoidance groove (412) is arranged on the side surface of the lower bending die (41) at a position corresponding to the product boss (1002).

2. The floating bending device according to claim 1 is characterized in that: The upper die (10) comprises an upper die seat (101), and an upper pad (102) and an upper fixed plate (103) which are sequentially stacked and fixed below the upper die seat (101); the upper bending punch (31) is fixedly connected to the upper unloading plate (105); the lower die (20) comprises a lower die seat (203), and a lower fixed plate (202) and a lower concave template (201) which are sequentially stacked and fixed above the lower die seat (203); the lower avoidance groove (2011) and the lower bending concave template (41) are arranged in the lower concave template (201).

3. The floating bending device according to claim 2 is characterized in that: The upper mold (10) further comprises an upper unloading back plate (104) and an upper unloading plate (105) hung on the upper fixed plate (103); the upper unloading back plate (104) is fixedly connected to the upper unloading plate (105); the upper bending punch (31) passes through the upper unloading back plate (104) and the upper unloading plate (105); the upper bending punch (31) is movably connected to the upper unloading back plate (104) and the upper unloading plate (105).

4. The floating bending device according to claim 3 is characterized in that: An upper limit groove (1051) is provided on one side of the upper unloading plate (105) close to the upper bending punch (31), and a limit stop block (43) is fixedly provided in the lower avoidance groove (2011) at a position facing the upper limit groove (1051), and the limit stop block (43) is used to prevent the upper bending punch (31) from deflecting.

5. The floating bending device according to claim 3 is characterized in that: An upper spring (32) is provided in the upper die (10), and the upper spring (32) is used to push open the upper unloading plate (105).

6. The floating bending device according to claim 2 is characterized in that: The lower die (20) is provided with a third lower ejector rod (48) and a third lower spring (49), and the third lower ejector rod (48) passes through the lower die seat (203), the lower fixing plate (202), and the lower concave die plate (201) from bottom to top.

7. The floating bending device according to claim 1 is characterized in that: The lower die (20) is provided with a second lower push rod (46) and a second lower spring (47). The second lower push rod (46) passes through the die through hole (414) of the lower bending die (41) from bottom to top. The second lower push rod (46) is used to push against the lower end surface of the product (100).

8. The floating bending device according to claim 1 is characterized in that: A limiting block (42) is fixedly arranged in the lower avoidance groove (2011), and the side surface of the limiting block (42) cooperates with the hanging platform (415) on the side surface of the lower bending die (41) to limit the floating height of the lower bending die (41).

9. The floating bending device according to claim 1, characterized in that: The bottom surface of the upper bending convex die (31) is provided with an upper bending R-angle groove (311) for bending the bending edge (1001) of the product downward, and the top surface of the lower bending concave die (41) is provided with a lower bending R angle (411) for matching the upper bending R-angle groove (311).

10. The floating bending device according to claim 1, characterized in that: The side surface of the lower bending die (41) is provided with a second avoidance groove (413) for avoiding the product hook body (1003).

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