Back-beating forming device for convex hull

Abstract

A return forming device for a convex hull comprises a material belt, an upper die base and a lower die base, the material belt is arranged between the upper die base and the lower die base, the lower die base comprises a fixing plate, a floating plate and a first punching head, a first gap is formed between the floating plate and the fixing plate, the upper die base comprises a stripper plate and an upper clamping plate, and a second gap is formed between the upper clamping plate and the stripper plate. A receding groove is formed in the side, close to the material belt, of the stripper plate, during die assembly, the upper end face of the floating plate abuts against the lower end face of the material belt, the floating plate moves downwards, the first gap is reduced, the first punching head moves upwards relative to the floating plate, a groove is formed in the material belt through the first punching head, and a convex hull is formed in the receding groove; the upper clamping plate presses downwards, the second gap is reduced, the stripper plate and the second stamping head are driven to press downwards, the convex hull is further machined, and the convex hull is fuller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of convex hull forming, especially to a convex hull back-punching forming device. BACKGROUND

[0002] In the current stamping production, it is often required to stamp out a special-shaped convex hull on a flat plate, and when the convex hull is normally punched, the material is insufficient at the four close places between the square groove on the back and the four close places of the circular convex hull on the front, and the influence of oil blocking during forming makes the convex hull not full at the four places. The conventional forming method is to first pre-form the convex hull in the first step and then form it in the second step, which solves the problem of the collapsed edge of the groove by using the two-step forming method, but the two-step feeding makes more material go to the pre-stamped inner hole in the middle, and the material at the four close places is still insufficient to form the convex hull, and the convex hull is still not full enough, so the product produced finally is still insufficient in material at the four places of the convex hull. SUMMARY

[0003] In view of the deficiencies and shortcomings of the prior art, the present utility model provides a convex hull back-punching forming device to achieve a full convex hull.

[0004] The convex hull back-punching forming device comprises a material belt, an upper die seat and a lower die seat, the material belt is arranged between the upper die seat and the lower die seat, the lower die seat comprises a fixed plate, a floating plate and a first stamping head, a first gap is arranged between the floating plate and the fixed plate, the upper die seat comprises a material removal plate, an upper clamping plate and a second stamping head, a second gap is arranged between the upper clamping plate and the material removal plate, an avoidance groove is arranged on one side of the material removal plate close to the material belt, the upper end surface of the floating plate abuts against the lower end surface of the material belt when the die is closed, the floating plate moves downward, the first gap decreases, the first stamping head moves upward relative to the floating plate, the first stamping head forms a groove on the material belt and a convex hull at the avoidance groove, the upper clamping plate moves downward, the second gap decreases, the material removal plate and the second stamping head are driven to move downward, and the convex hull is further processed.

[0005] Compared with the prior art, the present utility model punches the material belt to form a groove and a convex hull in the pre-formed area of the product on the material belt, sets an avoidance groove on the upper die, forms a convex hull at the avoidance groove when forming the groove, and then the upper clamping plate drives the material removal plate and the second stamping head to punch the material belt to further process the formed convex hull, so that the convex hull is back-punched to be full.

[0006] Further, a top rod is arranged on the lower die seat, the upper end of the top rod abuts against the lower end surface of the fixed plate, a push rod is arranged on the upper die seat, and the lower end of the push rod abuts against the upper end surface of the upper clamping plate.

[0007] Through the above improvement, the upper end of the ejector rod abuts against the lower end face of the fixed plate, and the fixed plate can be driven to be lifted up when the forming groove is formed, so that the forming of the groove is facilitated, and the fixed plate can be reset after the forming is completed.

[0008] Further, the stripper plate is provided with a limiting column, and the lower end of the limiting column abuts against the upper end face of the fixed plate during clamping, and the lower end of the limiting column is protrudingly arranged relative to the lower end face of the stripper plate.

[0009] Through the above improvement, the stripper plate is provided with a limiting column, and the lower end of the limiting column abuts against the upper end face of the fixed plate during clamping, and the lower end of the limiting column is protrudingly arranged relative to the lower end face of the stripper plate.

[0010] Further, the upper end of the first punch head is provided with a protective convex die, the outer wall of the protective convex die abuts against the inner wall of the groove, and the upper end of the protective convex die is provided with a first material blocking rib, and the end of the second punch head close to the material strip is provided with a second material blocking rib.

[0011] Through the above improvement, the upper end of the first punch head is provided with a protective convex die, the outer wall of the protective convex die abuts against the inner wall of the groove, and the upper end of the protective convex die is provided with a first material blocking rib, and the end of the second punch head close to the material strip is provided with a second material blocking rib.

[0012] Further, the upper die seat and the lower die seat successively punch out a first trimming hole, an inner hole and a second trimming hole on the material strip, and a reserved area is arranged between the first trimming hole and the second trimming hole.

[0013] Through the above improvement, a reserved area is arranged between the first trimming hole and the second trimming hole, sufficient space is left for deformation during subsequent operation, and the quality of the product during forming is prevented from changing due to insufficient reserved space.

[0014] Further, the size of the preliminary formed convex is greater than the size of the finally formed convex.

[0015] Through the above improvement, the size of the preliminary formed convex is greater than the size of the finally formed convex, so that the convex forming effect is good when the convex is finally formed, and a full convex is finally obtained. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1A method flow chart of a convex back-punch forming method;

[0017] Figure 2 A structure schematic diagram of a convex back-punch forming device when the die is closed;

[0018] Figure 3 A structure schematic diagram of a convex back-punch forming device when the die is opened;

[0019] Figure 4 A local enlarged schematic diagram of A of a product of a convex back-punch forming device;

[0020] Figure 5 A product structure diagram of a convex back-punch forming device;

[0021] Figure 6 A structure schematic diagram of a convex back-punch forming device when the die is opened in a back-punch state;

[0022] Figure 7 A structure schematic diagram of a convex back-punch forming device when the die is closed in a back-punch state.

[0023] Wherein, 100, punch positioning hole station; 101, punch first trimming hole station; 102, punch inner hole station; 103, punch second trimming hole station; 104, forming back concave groove station; 105, forming front convex bump station; 106, profile chamfer station; 107, fine punching station; 108, flattening station; 109, blanking station; 110, waste material cutting station; 1, material belt; 1.1, positioning hole; 1.2, first trimming hole; 1.3, inner hole; 1.4, second trimming hole; 1.5, reserved area; 1.6, waste material; 2, upper die holder; 2.1, stripper plate; 2.11, avoidance groove; 2.12, limiting column; 2.2, upper clamping plate; 2.3, second gap; 2.4, second punching head; 2.41, second material blocking rib; 2.5, push rod; 3, lower die holder; 3.1, fixed plate; 3.2, floating plate; 3.3, first punching head; 3.31, shape protection punch; 3.32, first material blocking rib; 3.4, first gap; 3.5, ejector rod; 4, product; 4.1, concave groove; 4.2, convex bump. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings and specific embodiments.

[0025] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] As shown in Figures 1 to 7 A kind of convex 4.2 back beating forming device, including material belt 1, upper die holder 2 and lower die holder 3, material belt 1 is arranged between upper die holder 2 and lower die holder 3, lower die holder 3 includes fixed plate 3.1, floating plate 3.2 and first stamping head 3.3, first gap 3.4 is arranged between floating plate 3.2 and fixed plate 3.1, upper die holder 2 includes stripper plate 2.1 and upper clamping plate 2.2, second gap 2.3 is arranged between upper clamping plate 2.2 and stripper plate 2.1, the side of stripper plate 2.1 close to material belt 1 is provided with avoid slot 2.11, the upper end surface of floating plate 3.2 and the lower end surface of material belt 1 are in abutment when moulding, floating plate 3.2 moves down, first gap 3.4 reduces, first stamping head 3.3 moves up relative to floating plate 3.2, first stamping head 3.3 forms groove 4.1 on material belt 1, and convex 4.2 is formed at avoid slot 2.11;Upper clamping plate 2.2 is pressed down, second gap 2.3 reduces, and stripper plate 2.1 and second stamping head 2.4 are pressed down, and further processing is carried out to convex 4.2.

[0027] Further, top rod 3.5 is arranged on lower die holder 3, the upper end of top rod 3.5 abuts against the lower end surface of fixed plate 3.1, push rod 2.5 is arranged on upper die holder 2, the lower end of push rod 2.5 abuts against the upper end surface of upper clamping plate 2.2, the upper end of top rod 3.5 arranged on lower die holder 3 abuts against the lower end surface of fixed plate 3.1, which can drive fixed plate 3.1 to be jacked up when forming groove 4.1, facilitating the formation of groove 4.1, and can drive fixed plate 3.1 to reset after the formation is completed.

[0028] Limiting column 2.12 is arranged on stripper plate 2.1, the lower end of limiting column 2.12 abuts against the upper end surface of fixed plate 3.1 when moulding, and the lower end of limiting column 2.12 is protrudingly arranged relative to the lower end surface of stripper plate 2.1, preventing stripper plate 2.1 from being damaged due to direct contact with fixed plate 3.1, and also preventing stripper plate 2.1 from pressing material belt 1 to be thin, thereby affecting the final modeling of product 4.

[0029] A guard-shaped punch 3.31 is arranged at the upper end of the first punch head 3.3, and the guard-shaped punch 3.31 abuts against the inner wall of the groove 4.1, so that the already formed groove 4.1 is not deformed by pressure during the subsequent forming operation of the convex bump 4.2. A first group of ribs and a second group of ribs 2.41 are arranged in the first punch head 3.3 and the second punch head 2.4 respectively, and the first group of ribs and the second group of ribs 2.41 can prevent the flow of part of the material to the middle during stamping, so that the material enters the inner hole 1.3, thereby affecting the forming of the inner hole 1.3.

[0030] The utility model also provides a kind of convex bump 4.2 back beating forming device method, method flow as Figure 1 As shown in the figure, positioning hole punching station 100, first edge hole punching station 101, inner hole punching station 102, second edge hole punching station 103, back groove forming station 104, front convex bump forming station 105, profile chamfering station 106, fine punching station 107, flattening station 108, blanking station 109 and waste material cutting station 110 are arranged in the direction of material belt 1 step forward feeding respectively.

[0031] Material belt 1 is fed into stamping equipment, and continuously fed in blanking direction by continuous step, and punching is sequentially carried out on material belt 1 by corresponding punching die.

[0032] The forming method specifically includes the following steps:

[0033] Step 1, feeding: material belt 1 is fed into stamping equipment, so that material belt 1 can continuously step forward feeding on stamping equipment.

[0034] Step 2, edge punching: during the forward feeding of material belt 1, edge punching operation is carried out around the preforming area of product 4 on material belt 1 after each step.

[0035] The specific steps of edge punching are as follows:

[0036] Step 201, punch positioning hole 1.1: during the forward feeding of material belt 1, punch positioning hole 1.1 on both sides of the preforming area of product 4 on material belt 1;

[0037] Step 202, punch first edge hole 1.2: during the forward feeding of material belt 1, punch first edge hole 1.2 on both ends of the preforming area of product 4 on material belt 1;

[0038] Step 203, punch inner hole 1.3: during the forward feeding of material belt 1, punch inner hole 1.3 in the preforming area of product 4 on material belt 1;

[0039] Step 204, punching out the second trimming hole 1.4: during the forward feeding of the material strip 1, a connecting hole is punched out at the middle of the product 4 preforming area on one side of the material strip 1, and a second trimming hole 1.4 is punched out on the upper and lower sides of the product 4 preforming area.

[0040] In step 202 and step 204, the connecting hole punched out is in communication with the first trimming hole 1.2, forming a complete through hole, and a reserved area 1.5 is arranged between the first trimming hole 1.2 and the second trimming hole 1.4.

[0041] Step 3, forming the back groove 4.1: during the forward feeding of the material strip 1, a groove 4.1 is formed on one side of the product 4 preforming area on the material strip 1 close to the lower die.

[0042] When the groove 4.1 is formed, a draft angle is applied in the groove 4.1, which can prevent the material from wrapping around the protective convex die 3.31 during the back beating of the convex bump 4.2, causing the material to be unable to be stripped.

[0043] Step 4, forming the front convex bump 4.2: during the forward feeding of the material strip 1, a convex bump is formed on one side of the product 4 preforming area on the material strip 1 close to the upper die, and the back beating is performed according to the forming size of the final formed convex bump 4.2 at the convex bump forming position, so as to form a full convex bump 4.2.

[0044] The size of the preformed convex bump is larger than the size of the final formed convex bump 4.2, so that when the convex bump 4.2 is finally formed, the convex bump 4.2 has a good forming effect, and finally a full convex bump 4.2 is obtained.

[0045] Step 5, forming surface features: during the forward feeding of the material strip 1, surface features are formed in the product 4 preforming area on the material strip 1 after each step.

[0046] The specific steps of forming surface features are as follows:

[0047] Step 501, chamfering: during the forward feeding of the material strip 1, chamfering is performed on the product 4 preforming area on the material strip 1;

[0048] Step 502, fine punching: during the forward feeding of the material strip 1, fine punching is performed on the inner hole 1.3 area of the product 4 preforming area on the material strip 1;

[0049] Step 503, flattening: during the forward feeding of the material strip 1, flattening is performed on one side of the material strip 1 close to the lower die.

[0050] Various surface features are formed on the product 4, so that the product 4 does not need to be processed again after blanking, making the processing procedure more reasonable and facilitating blanking.

[0051] Step 6, blanking: blanking is performed after the product 4 profile is cut on the material strip 1 during the forward feeding of the material strip 1 to obtain the final product 4.

[0052] Step 7, cutting off waste 1.6: after the blanking is completed, the product 4 obtains the waste 1.6 on the first material strip 1 during the forward feeding of the material strip 1, and the waste 1.6 is cut off.

[0053] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme which belongs to the technical scheme under the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A convexity back-punch forming apparatus characterized by: The utility model provides a kind of stamping device, including material belt (1), upper die holder (2) and lower die holder (3), the material belt (1) is arranged between the upper die holder (2) and the lower die holder (3), the lower die holder (3) includes fixed plate (3.1), floating plate (3.2) and first stamping head (3.3), first gap (3.4) is arranged between the floating plate (3.2) and the fixed plate (3.1), the upper die holder (2) includes stripper plate (2.1), upper clamp plate (2.2) and second stamping head (2.4), second gap (2.3) is arranged between the upper clamp plate (2.2) and the stripper plate (2.1), the stripper plate (2.1) is close to the side of the material belt (1) and is provided with avoid location groove (2.11), when the die is closed, the upper end surface of the floating plate (3.2) is in abutment with the lower end surface of the material belt (1), the floating plate (3.2) is lowered, the first gap (3.4) is reduced, the first stamping head (3.3) is raised relative to the floating plate (3.2), the first stamping head (3.3) is formed on the material belt (1) groove (4.1), and convex (4.2) is formed at the avoid location groove (2.11);The upper clamp plate (2.2) is pressed down, the second gap (2.3) is reduced, drives the stripper plate (2.1) and the second stamping head (2.4) to press down, and the convex (4.2) is further processed.

2. A convex punch and die set according to claim 1, wherein: The lower die holder (3) is provided with ejector rod (3.5), the upper end of the ejector rod (3.5) is in abututment with the lower end surface of the fixed plate (3.1), and the upper die holder (2) is provided with push rod (2.5), and the lower end of the push rod (2.5) is in abututment with the upper end surface of the upper clamp plate (2.2).

3. A convex punch and die set according to claim 1, wherein: The stripper plate (2.1) is provided with limit post (2.12), the lower end of the limit post (2.12) is in abututment with the upper end surface of the fixed plate (3.1) when the die is closed, and the lower end of the limit post (2.12) is protrudingly arranged relative to the lower end surface of the stripper plate (2.1).

4. The convexity back-punching forming device according to claim 1, wherein: The upper end of the first stamping head (3.3) is provided with guard-shaped convex die (3.31), the upper end of the guard-shaped convex die (3.31) is provided with chamfer, the outer wall of the guard-shaped convex die (3.31) is in abututment with the inner wall of the groove (4.1), the upper end of the guard-shaped convex die (3.31) is provided with first material blocking rib (3.32), and the second material blocking rib (2.41) is arranged at the end of the second stamping head (2.4) close to the material belt (1).

5. A convex punch and die set according to claim 1, wherein: The upper die holder (2) and the lower die holder (3) successively punch out first trimming hole (1.2), inner hole (1.3) and second trimming hole (1.4) on the material belt (1), and the first trimming hole (1.2) and the second trimming hole (1.4) are provided with reserved area (1.5).

6. A convex punch and die set according to claim 1, wherein: The size of the convex (4.2) of the preliminary forming is greater than the size of the convex (4.2) of the final forming.

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