Automatic material pushing stamping die and stamping method thereof

Abstract

The present invention discloses an automatic material pushing stamping die, comprising: an upper template, a middle template, and a lower template. The lower template is provided with a first working step, and the first working step is provided with a first material tearing blade; the lower template is provided with a second working step, and the second working step is provided with a first material cutting blade and a first bending insert; the lower template is also provided with a third working step, and the third working step is provided with a second bending insert, a plurality of positioning columns and a plurality of positioning blocks, and the positioning blocks are arranged away from the second bending insert relative to the positioning columns. It can accurately drive the product to be stamped. A stamping method comprises the following steps: punching; tearing; bending to form a material pushing portion; punching and cutting the material connection point on the material strip so that the product is separated from the material strip; and bending the product in cooperation with the second bending insert in the third working step. It can accurately drive the product to be stamped.

Description

Technical Field

[0001] The invention relates to the field of die stamping, in particular to an automatic material pushing stamping die and a stamping method thereof. Background Art

[0002] During continuous automatic stamping, the unfinished stamped products are driven forward by the material connection points of the material strip. However, many products need to be bent as a whole. When the product is bent as a whole, the material connection points of the material strip may deform at the same time, resulting in the material strip and the product being unable to move forward, causing damage to the mold and the product being unable to be fully formed.

[0003] The existing solution is to cut the material strip and the product apart before bending the whole, and use other parts, equipment or manual to push the product forward to complete the following stamping steps. This will result in a larger mold as a whole, a complex internal structure, and more complicated maintenance and use. Summary of the invention

[0004] In order to overcome the defects in the prior art, an embodiment of the present invention provides an automatic material pushing stamping die and a stamping method thereof, which can accurately drive the product to be stamped.

[0005] To achieve the above purpose, the present application discloses an automatic push stamping die, comprising:

[0006] On the template,

[0007] Medium template,

[0008] The lower template is provided with a first working step, and the first working step is provided with a first tearing blade; the lower template is provided with a second working step, and the second working step is provided with a first cutting blade and a first bending insert; the lower template is also provided with a third working step, and the third working step is provided with a second bending insert, a plurality of positioning columns and a plurality of positioning blocks, and the positioning blocks are arranged relative to the positioning columns and away from the second bending insert.

[0009] Preferably, the positioning posts are conical in shape, and the positioning posts are symmetrically arranged in the third process step.

[0010] Preferably, the first step, the second step and the third step are arranged in sequence.

[0011] Preferably, a limiting frame is further provided on the third working step, and the limiting frame is arranged upstream of the positioning column and the positioning block, and the limiting frame is arranged above the third working step.

[0012] Preferably, there is no corresponding middle template in the third process step.

[0013] To achieve the above purpose, the present application discloses a stamping method, comprising the following steps:

[0014] The material strip is placed into the mold, and the mold first punches holes in the material strip;

[0015] When the material strip reaches the first process step, the punching of the product on the material strip at the first process step is completed, the product is connected to the material strip through the material connection point, and the material strip is torn with the first tearing blade at the first process step;

[0016] The strip after tearing reaches the second step, and in the second step, the first bending insert is used to bend the tearing part of the strip to form a pusher, and the pusher is arranged perpendicular to the strip; in the second step, the first cutting blade is used to punch the connecting point on the strip, so that the product is separated from the strip;

[0017] The material belt moves toward the third process step, and the material pusher pushes the dropped product to the third process step, and cooperates with the second bending insert to bend the product at the third process step;

[0018] The material strip moves to the next process step, and the material pushing portion pushes the bent product to move to the next process step.

[0019] Preferably, the product is symmetrical as a whole, the punching holes on the product are symmetrically arranged, and the connecting points on the product are symmetrically arranged.

[0020] Preferably, the pushing portion is arranged upstream of the product.

[0021] Preferably, when the product reaches the third step without being punched, the product can be sleeved on the positioning column.

[0022] Preferably, when the product is in the third process step and is not punched, one end of the product abuts against the pushing portion, and the other end of the product abuts against the positioning block.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. Bend the material strip to form a pusher, and use the pusher on the material strip to push the product that needs to be bent as a whole forward, which greatly reduces the complexity of the mold structure and facilitates use and later maintenance;

[0025] 2. Use conical positioning columns, positioning blocks and pushers to limit the position of the products to be bent to prevent inaccurate bending positions of the products;

[0026] 3. The conical positioning column enables the product to fall off the positioning column smoothly after bending;

[0027] 4. Use the limit frame to effectively prevent the punch from taking the stamped products upward;

[0028] 5. There is no corresponding middle template in the third step of the lower template, which can effectively prevent the interference between the bent product and the middle template.

[0029] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 Schematic diagram of the structure of the lower template of the automatic push-pull stamping die in the embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of a template in an automatic push-pushing stamping die in an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of a template in an automatic push-pushing stamping die in an embodiment of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of a template in an automatic push-pushing stamping die in an embodiment of the present invention;

[0035] Figure 5 is a schematic diagram of a symmetrical product bending state in an embodiment of the present invention;

[0036] Reference numerals in the above drawings:

[0037] 1. The first working step; 11. The first tearing edge;

[0038] 2. Second process step; 21. First cutting edge; 22. First bending insert;

[0039] 3. The third process step; 31. The second bending insert; 32. The positioning column; 33. The positioning block; 34. The limiting frame;

[0040] 4. Put on the template;

[0041] 5. Middle template;

[0042] 6. Download the template;

[0043] 7. Material belt; 71. Material tearing point; 72. Material pushing part; 73. Material connecting point;

[0044] 8. Products. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inside", "outside", etc. 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 invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0047] In order to achieve the above object, the present invention provides an automatic material pushing stamping die.

[0048] Please refer to Figure 1 , Figure 2 and Figure 3 The mold includes an upper mold plate 4, a middle mold plate 5 and a lower mold plate 6.

[0049] Please refer to Figure 1 The lower template 6 is provided with a first process step 1 , and the first process step 1 is provided with two symmetrical first tearing edges 11 .

[0050] Furthermore, a second process step 2 is provided downstream of the first process step 1 on the lower template 6 , and the second process step 2 is provided with two symmetrically arranged first cutting edges 21 and two symmetrically arranged first bending inserts 22 .

[0051] Furthermore, a third process step 3 is provided downstream of the second process step 2 on the lower template 6, and the third process step 3 is provided with two symmetrically arranged second bending inserts 31, two symmetrically arranged positioning columns 32 and a positioning block 33 arranged in the middle, and the positioning block 33 is arranged away from the second bending insert 31 relative to the positioning column 32.

[0052] Furthermore, it is understandable that the positioning post 32 is conical, and when the upper mold plate 4 punches the material strip 7 in the third process step 3 , the product 8 originally sleeved on the positioning post 32 can be released from the conical positioning post 32 .

[0053] Furthermore, the third process step 3 is also provided with a limiting frame 34 , which is arranged upstream of the positioning column 32 and the positioning block 33 , and the limiting frame 34 is arranged above the second bending insert 31 .

[0054] It can be understood that the limiting frame 34 can effectively prevent the stamping punch from being stuck to the stamped product 8 due to the oil stains on the stamping punch and taking it away.

[0055] Further, it is understandable that please refer to Figure 2 , the third process step 3 on the lower template 6 does not have a corresponding middle template 5.

[0056] With the above structure, the present invention provides a stamping method, comprising the following steps:

[0057] During continuous automatic punching, the material strip 7 is placed into the mold, and the mold first punches holes in the material strip 7. The product 8 is a symmetrical product 8, and the punching holes are also symmetrical.

[0058] Furthermore, when the material strip 7 reaches the first process step 1, the punching of the product 8 on the material strip 7 at the first process step 1 is completed. At this time, the product 8 is connected to the material strip 7 through the connecting point 73, and the first process step 1 cooperates with the first tearing blade 11 to tear the tearing point 71 of the material strip 7.

[0059] The strip 7 and product 8 after tearing are completed arrive at the second process step 2 , and the first bending insert 22 is used to bend the tearing part of the strip 7 to form a pushing portion 72 , and the pushing portion 72 is arranged perpendicular to the strip 7 .

[0060] Furthermore, in the second process step 2 , the first cutting blade 21 is used to punch the connecting point 73 on the material strip 7 , so that the product 8 is separated from the material strip 7 .

[0061] Furthermore, the material belt 7 moves toward the third process step 3 , and the pushing portion 72 of the material belt 7 pushes the fallen product 8 onto the third process step 3 . Since the product 8 is symmetrical, the product 8 can accurately reach the third process step 3 under the push of the two pushing portions 72 .

[0062] For further information, please refer to Figure 5 In the third step 3 , the second bending insert 31 is used to bend the product 8 .

[0063] The material strip 7 moves to the next process step, and the pushing portion 72 pushes the bent product 8 to move to the next process step, and the above steps are repeated to punch the next product 8 .

[0064] It can be understood that the material strip 7 is bent to form a pushing portion 72, and the pushing portion 72 on the material strip 7 is used to push the product 8 that needs to be bent as a whole to move forward, which greatly reduces the complexity of the mold structure and is convenient for use and later maintenance; the conical positioning column 32 is used to cooperate with the positioning block 33 and the pushing portion 72 to limit the product 8 that needs to be bent to prevent the product 8 from being bent at an inaccurate position; the conical positioning column 32 allows the product 8 to fall off the positioning column 32 smoothly after being bent; the limiting frame 34 is used to effectively prevent the stamping punch from carrying the stamped product 8 upward; there is no corresponding middle template 5 on the third step 3 of the lower template 6, which can effectively prevent the bent product 8 from interfering with the middle template 5.

[0065] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A stamping method using an automatic push stamping die, the automatic push stamping die comprising: An upper template, a middle template, and a lower template, wherein the lower template is provided with a first working step, and the first working step is provided with a first tearing knife edge; the lower template is provided with a second working step, and the second working step is provided with a first cutting knife edge and a first bending insert; the lower template is also provided with a third working step, and the third working step is provided with a second bending insert, a plurality of positioning columns and a plurality of positioning blocks, and the positioning blocks are arranged relative to the positioning columns away from the second bending insert, and are characterized in that the following steps are included: The material strip is placed into the mold, and the mold first punches holes in the material strip; When the material strip reaches the first process step, the punching of the product on the material strip at the first process step is completed, the product is connected to the material strip through the material connection point, and the material strip is torn with the first tearing blade at the first process step; The strip after tearing reaches the second step, and in the second step, the first bending insert is used to bend the tearing part of the strip to form a pusher, and the pusher is arranged perpendicular to the strip; In the second step, the first cutting blade is used to punch the connecting point on the material strip, so that the product is separated from the material strip; The material belt moves toward the third process step, and the material pusher pushes the dropped product to the third process step, and cooperates with the second bending insert to bend the product at the third process step; The material strip moves to the next process step, and the material pushing portion pushes the bent product to move to the next process step.

2. The punching method according to claim 1, characterized in that: The product is symmetrical as a whole, the punching holes on the product are symmetrically arranged, and the connecting points on the product are symmetrically arranged.

3. The stamping method according to claim 1, characterized in that: The pusher portion is disposed upstream of the product.

4. The punching method according to claim 1, characterized in that: When the product reaches the third step without being punched, the product can be sleeved on the positioning column.

5. The punching method according to claim 1, characterized in that: When the product is in the third process step and is not punched, one end of the product abuts against the pushing portion, and the other end of the product abuts against the positioning block.

6. The punching method according to claim 1, characterized in that: The positioning posts are conical in shape and are symmetrically arranged in the third process step.

7. The punching method according to claim 1, characterized in that: The first step, the second step and the third step are arranged in sequence.

8. The punching method according to claim 1, characterized in that: The third working step is also provided with a limiting frame, the limiting frame is arranged upstream of the positioning column and the positioning block, and the limiting frame is arranged above the third working step.

9. The punching method according to claim 1, characterized in that: There is no corresponding middle template in the third step.

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