Staggered strip-shaped hole one-time forming punching die

Abstract

The utility model discloses a staggered strip-shaped hole one-time forming punching die which comprises an upper die assembly, a lower die assembly and a lower die assembly. The upper die assembly comprises a male die and an upper die plate, and the male die is configured to be of a split structure. The lower die assembly comprises a female die and a lower die plate, a to-be-machined pipe fitting is arranged at the female die, and the upper die assembly can move up and down so that the male die can move up and down to complete punching; and the auxiliary positioning mechanism is used for auxiliary positioning of the to-be-machined pipe fitting. The one-time forming punching die for the staggered strip-shaped holes is simple in structure, the male die is of a split structure and is matched with the two strip-shaped holes, distributed in a staggered mode, of the female die, the strength of the male die can be improved during punching, the product quality is improved, meanwhile, the damage rate of the male die is effectively reduced, and therefore the consumption cost of spare parts of the die is reduced, and the rejection rate of pipe fittings is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe processing, in particular to a one-time forming punching die for dislocated strip holes. Background Art

[0002] Pipe punching dies are commonly used in metal processing. They can punch out the required shapes and holes in metal pipes through pressure. Punching dies have many advantages such as high efficiency, precision, and material saving. They are widely used in automobile manufacturing, home appliance manufacturing, mechanical equipment manufacturing and other fields.

[0003] When processing the exhaust pipe orifice of an automobile, the existing processes generally use laser cutting or integral punching, but laser cutting has high cost and low efficiency; and if the integral punching punch is made into one piece, the consumption of punch consumables and spare parts is high, the damage rate of the integral punching punch edge is high, the quality is difficult to control during the production process, and the practicality is poor.

[0004] Based on the above technical problems, technicians in this field urgently need to develop a one-time forming punching die for offset strip holes with a simple structure that can effectively reduce the damage rate of the punch edge and the loss of spare parts and improve product quality. Utility Model Content

[0005] The utility model aims to provide a one-step forming punching die for dislocated strip holes which has a simple structure and can effectively reduce the damage rate of the punch edge and the loss of spare parts and improve product quality.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a one-step forming punching die for offset strip holes, which comprises:

[0008] An upper die assembly, comprising a male die and an upper die plate, wherein the male die is configured as a split structure;

[0009] A lower die assembly includes a concave die and a lower die plate, the pipe to be processed is placed at the concave die, and the upper die assembly can move up and down to make the convex die move up and down to complete the punching;

[0010] The punching die also includes:

[0011] The auxiliary positioning mechanism is used to assist in positioning the pipe to be processed.

[0012] Furthermore, the upper mold assembly also includes a pressing plate installed at the lower end of the upper mold plate through a spring; and

[0013] A fixing plate disposed on the upper end of the pressing plate, the fixing plate being capable of mounting the punch or the punch so that the punch or the punch passes through the pressing plate and forms a match with the concave die;

[0014] Upper limit posts and guide sleeves are respectively installed at the edges of the upper template, and the up and down movement is achieved through the guide sleeves.

[0015] Furthermore, the lower mold assembly also includes a fixing seat vertically connected to the upper end of the lower mold plate;

[0016] A mandrel mounted on the fixing seat, wherein the concave die is on the mandrel;

[0017] A positioning plate mounted on the fixing seat and located at the lower end of the mandrel;

[0018] A lower limit column and a guide column are respectively installed at the edge of the lower mold plate, and the upper mold assembly can move up and down along the guide column.

[0019] Furthermore, a support block is installed on the lower template, and the support block is used to support the pipe fitting.

[0020] Furthermore, the auxiliary positioning mechanism includes a connecting plate connected to the lower template; and

[0021] A support seat perpendicular to the end of the connecting plate away from the lower template;

[0022] A guide shaft is installed on the support seat, and a positioning core shaft is installed at the end of the guide shaft.

[0023] Furthermore, the female mold is provided with two staggered strip holes for matching with the male mold.

[0024] In the above technical solution, the one-step forming punching die for offset strip holes provided by the utility model has the following beneficial effects:

[0025] The utility model has a simple structure for the one-time forming punching die of the staggered strip holes. The punch is set as a split structure, and cooperates with the two staggered strip holes of the die. The strength of the punch can be increased during punching, and the product quality can be improved while effectively reducing the damage rate of the punch, thereby reducing the consumption cost of mold spare parts and reducing the scrap rate of pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the connection between the upper and lower dies of the one-step forming punching die for staggered strip holes provided by the embodiment of the utility model;

[0028] Figure 2 A schematic diagram of an upper die assembly of a punching die for forming staggered strip holes in one step provided by an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of a lower die assembly and an auxiliary positioning mechanism for a one-step forming punching die for staggered strip holes provided in an embodiment of the utility model;

[0030] Figure 4 A positional relationship diagram of a punching die and a concave die of a one-step forming punching die for staggered strip holes provided in an embodiment of the utility model;

[0031] Figure 5 A top view of a female die of a punching die for forming offset strip holes in one step provided in an embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 1. Upper die assembly; 2. Lower die assembly; 3. Auxiliary positioning mechanism;

[0034] 101, punch; 102, upper mold plate; 103, press plate; 104, fixed plate; 105, punch; 106, upper limit column; 107, guide sleeve;

[0035] 201, concave die; 202, lower die plate; 203, fixed seat; 204, mandrel; 205, positioning plate; 206, lower limit column; 207, guide column; 208, support block;

[0036] 2011, Strip Hole;

[0037] 301, connecting plate; 302, supporting seat; 303, guide shaft; 304, positioning mandrel. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] See also Figure 1 to Figure 5 As shown;

[0040] The utility model discloses a one-step forming punching die for offset strip holes, which comprises:

[0041] An upper mold assembly 1, comprising a male mold 101 and an upper mold plate 102, wherein the male mold 101 is configured as a split structure;

[0042] The lower die assembly 2 includes a concave die 201 and a lower die plate 202. The pipe to be processed is placed at the concave die 201. The upper die assembly 1 can move up and down to make the convex die 101 move up and down to complete the punching.

[0043] The punching die also includes:

[0044] The auxiliary positioning mechanism 3 is used to assist in positioning the pipe to be processed.

[0045] As a further introduction to this embodiment, the upper mold assembly 1 also includes a pressing plate 103 installed at the lower end of the upper mold plate 102 through a spring, one end of the spring is connected to the upper mold plate 102, and the other end is connected to the pressing plate 103, and a damping telescopic column is installed inside the spring; and

[0046] A fixing plate 104 is provided at the upper end of the pressing plate 103, and the fixing plate 104 can be installed with the punch 101 or the punch 105 so that the punch 101 or the punch 105 passes through the pressing plate 103 and forms a match with the die 201. In this embodiment, the punch 105 or the punch 101 can be selected according to the punching type, and the punch 101 is configured as a split structure, which can increase the strength of the punch when punching;

[0047] Upper limit posts 106 and guide sleeves 107 are respectively installed at the edges of the upper template 102, and the guide sleeves 107 are used to realize up and down movement.

[0048] As a further introduction to this embodiment, the lower mold assembly 2 also includes a fixing seat 203 vertically connected to the upper end of the lower mold plate 202;

[0049] A mandrel 204 is mounted on the fixing seat 203, and the die 201 is on the mandrel 204;

[0050] A positioning plate 205 mounted on the fixing seat 203 and located at the lower end of the core shaft 204;

[0051] The lower limit column 206 and the guide column 207 are respectively installed at the edge of the lower mold plate 202, and the upper mold assembly 207 can move up and down along the guide column 207. The guide column 207 and the guide sleeve 107 cooperate to realize the contact or separation of the upper and lower mold assemblies. The upper limit column 106 and the lower limit column 206 provide the limit between the upper and lower mold assemblies. When the upper limit column 106 and the lower limit column 206 are connected, the default is the lowest limit.

[0052] As a further introduction to this embodiment, a support block 208 is also installed on the lower template 202, and the support block 208 is used to support the pipe fittings.

[0053] As a further introduction to this embodiment, the auxiliary positioning mechanism 3 includes a connecting plate 301 connected to the lower template 202; and

[0054] A support seat 302 perpendicular to the connecting plate 301 and away from one end of the lower template 202;

[0055] A guide shaft 303 is mounted on the support seat 302 , and a positioning core shaft 304 is mounted on the end of the guide shaft 303 .

[0056] As a further introduction to this embodiment, the female mold 201 is provided with two staggered strip holes 2011 for matching with the male mold 101 .

[0057] The specific working process of the one-step forming punching die for offset strip holes provided in this embodiment is as follows:

[0058] When the upper mold assembly 1 and the lower mold assembly 2 are separated, the pipe fitting is placed, the end face of the pipe mouth is fitted with the positioning plate 205, the pipe fitting is fitted with the support block 208, and the pipe fitting is fixed by the positioning core shaft 304. At this time, the upper mold assembly 1 is operated to move downward to punch the pipe fitting. The punch 105 or the punch 101 penetrates through the surface of the pipe fitting into the die 201 to complete the punching, and then the upper template 102 is moved upward through the guide column 207 and the guide sleeve 107 to remove the pipe fitting.

[0059] In the above technical solution, the one-step forming punching die for offset strip holes provided by the utility model has the following beneficial effects:

[0060] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. One-step forming punching die for offset strip holes, characterized in that: The punching die includes: An upper mold assembly (1), comprising a male mold (101) and an upper mold plate (102), wherein the male mold (101) is configured as a split structure; A lower die assembly (2) comprises a concave die (201) and a lower die plate (202); a pipe to be processed is placed on the concave die (201); and the upper die assembly (1) is capable of moving up and down to enable the convex die (101) to move up and down to complete punching; The punching die also includes: The auxiliary positioning mechanism (3) is used to assist in positioning the pipe to be processed.

2. The one-step forming punching die for offset strip holes according to claim 1 is characterized in that: The upper mold assembly (1) further comprises a pressing plate (103) mounted on the lower end of the upper mold plate (102) via a spring; and A fixing plate (104) is arranged at the upper end of the pressing plate (103), and the fixing plate (104) can be equipped with the punch (101) or the punch (105) so that the punch (101) or the punch (105) passes through the pressing plate (103) and forms a fit with the concave die (201); Upper limit posts (106) and guide sleeves (107) are respectively installed at the edges of the upper template (102), and the guide sleeves (107) are used to realize up and down movement.

3. The one-step forming punching die for offset strip holes according to claim 1 is characterized in that: The lower mold assembly (2) further comprises a fixing seat (203) vertically connected to the upper end of the lower mold plate (202); A core shaft (204) is mounted on the fixing seat (203), and the female mold (201) is on the core shaft (204); A positioning plate (205) mounted on the fixing seat (203) and located at the lower end of the core shaft (204); A lower limit column (206) and a guide column (207) are respectively installed at the edge of the lower mold plate (202), and the upper mold assembly (1) can move up and down along the guide column (207).

4. The one-step forming punching die for offset strip holes according to claim 3 is characterized in that: A support block (208) is also installed on the lower template (202), and the support block (208) is used to support the pipe fitting.

5. The one-step forming punching die for offset strip holes according to claim 1, characterized in that: The auxiliary positioning mechanism (3) comprises a connecting plate (301) connected to the lower template (202); and A support seat (302) perpendicular to the connecting plate (301) and away from one end of the lower template (202); A guide shaft (303) is installed on the support seat (302), and a positioning core shaft (304) is installed at the end of the guide shaft (303).

6. The one-step forming punching die for offset strip holes according to any one of claims 1 to 5, characterized in that: The female mold (201) is provided with two staggered strip holes (2011) for matching with the male mold (101).

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