Compound die in automobile stamping die

Abstract

The utility model provides a compound die in an automobile stamping die, which comprises an upper die and a lower die, a convex block is arranged on the lower die, a groove is arranged on the upper die, the shape of the convex block is the same as that of a cavity in the groove, and the convex block can be tightly inserted into the groove to form a guide positioning matching structure between the lower die and the upper die. The problem that stamping of the lower die and the upper die is not aligned is solved; the stamping part is provided with the notch through hole, the shape of the side wall face of the protruding block is the same as that of the notch through hole, the side wall of the protruding block is tightly clamped into the notch through hole in a seam fit mode, a positioning matching structure between the protruding block and the stamping part is formed, and the stamping part is prevented from moving disorderly, misplacing and wrong deformation under huge stamping force. The two sets of guide positioning structures are matched with each other, so that the stamping quality and efficiency are improved, the quality and efficiency of stamping parts are improved, the lower die and the upper die are protected, and the service life of the compound die is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile stamping compound dies, in particular to a compound die in an automobile stamping die. Background Art

[0002] Automobile stamping dies are dies for stamping automobile parts. The stamping parts on automobiles generally include cover parts, beam parts and general stamping parts. Compound dies refer to a die structure that can complete multiple processes such as blanking and punching in one stroke of the punching machine. Classification of compound dies: (1) Punching compound dies, such as blanking and punching compound dies, cutting and punching compound dies, etc.; (2) Forming compound dies, such as bending compound dies, compound extrusion dies, etc.; (3) Punching and forming compound dies, such as blanking and drawing compound dies, punching and flanging compound dies, drawing and trimming compound dies, blanking, drawing, punching and flanging compound dies, etc. Compared with other cold stamping die structures, compound dies have the following advantages: (1) The coaxiality of the workpiece is better, the surface is flat, and the dimensional accuracy is higher; (2) The production efficiency is high and it is not limited by the accuracy of the strip material's external dimensions. Sometimes scrap materials can also be used for re-production. Utility Model Content

[0003] The purpose of the utility model is to provide a composite die for an automobile stamping die.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0005] A composite die for an automobile stamping die comprises an upper die and a lower die for blanking and forming, wherein at least two protrusions for guiding and positioning the upper die, the lower die, and the stamping part are provided on two longitudinal edges of the parting surface of the lower die, respectively. The protrusions protrude upward from the parting surface of the lower die.

[0006] At least two grooves for guiding and positioning the upper die, lower die and stamping part are respectively provided on two longitudinal sides of the parting surface of the upper die, and the grooves are recessed downward from the parting surface of the upper die;

[0007] The two longitudinal edges of the stamping part are respectively provided with at least two notch through holes for positioning the stamping part;

[0008] The protrusions are located one by one directly below the corresponding grooves, and the shape of the protrusions on the lower die is the same as the shape of the cavities in the corresponding grooves on the upper die, so that during the stamping and die closing process, the upper die moves downward until it contacts and closes the die with the lower die, and the protrusions on the lower die are inserted into the corresponding grooves on the upper die, thereby forming a guiding and positioning matching structure between the lower die and the upper die;

[0009] The stamping part is located between all the protrusions on the two longitudinal edges, and the protrusions correspond one-to-one to the notched through holes on the stamping part. The shape of the side wall of the protrusion is the same as the shape of the corresponding notched through holes on the stamping part, so that during the stamping and mold closing process and after the mold closing, the side wall of the protrusion is stuck in the corresponding notched through holes on the stamping part to form a positioning and matching structure between the protrusion and the stamping part, preventing the stamping part from moving around, being dislocated, and deforming incorrectly under the stamping pressure.

[0010] Preferably, two longitudinal edges of the parting surface of the lower mold are respectively provided with two protrusions;

[0011] Two grooves are respectively provided on the two longitudinal edges of the parting surface of the upper mold;

[0012] Two lengthwise edges of the stamping part are respectively provided with two notched through holes.

[0013] Preferably, the outer side wall surface of the protrusion is vertically flush with the corresponding side wall surface of the lower mold.

[0014] This application has achieved the following beneficial technical effects:

[0015] (1) In the present application, a convex block is provided on the lower die and a groove is provided on the upper die. The shape of the convex block on the lower die is the same as the shape of the cavity in the corresponding groove on the upper die, so that during the stamping and closing process, the upper die moves downward until it contacts the stationary lower die for closing, and the convex block on the lower die can be inserted into the corresponding groove on the upper die in a tightly fitting manner, forming a tightly fitting guiding and positioning matching structure between the lower die and the upper die, thereby preventing problems such as misalignment of the lower die and the upper die during stamping;

[0016] (2) In the present application, a notched through-hole is provided on the stamping part, and the protrusion corresponds to the notched through-hole on the stamping part one by one. The shape of the side wall of the protrusion is the same as the shape of the corresponding notched through-hole on the stamping part, so that during the stamping and die closing process and after the die closing, the side wall of the protrusion fits tightly into the corresponding notched through-hole on the stamping part, forming a tightly fitting positioning and matching structure between the protrusion and the stamping part, thereby preventing the stamping part from moving around, being misplaced, and deforming incorrectly under a huge stamping force;

[0017] In summary, the mutual cooperation of the two sets of guiding and positioning structures of the present application improves the quality and efficiency of stamping, improves the quality and efficiency of stamping parts, protects the lower die and the upper die, and increases the service life of the composite die. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A schematic diagram of the three-dimensional structure of a composite die in an automobile stamping die provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the lower mold;

[0020] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the upper mold ( Figure 3 The middle stamping part is tightly attached to the parting surface of the upper die);

[0021] In the figure: 1 lower die, 101 bump;

[0022] 2 upper die (the upper die contains a cavity, and the cavity of the upper die is also provided with other small upper dies for blanking, drawing, punching or flanging, so as to form a composite die), 201 groove;

[0023] 3 Thin plate-shaped stamping parts, 301 notched through hole (a non-closed ring through hole with a notched cross section). DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are 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 making creative efforts shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "axial", "radial", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "high", "low", "clockwise", "counterclockwise", "inside", "outside", "horizontal", "vertical" and the like indicate orientations or positional relationships based on orientations or positional relationships in actual use, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0026] Reference Figure 1-3 , in the figure: lower die 1, protrusion 101; upper die 2, groove 201; thin plate-shaped stamping part 3, notch through hole 301.

[0027] The present application provides a composite die for an automobile stamping die, comprising an upper die 2 and a lower die 1 for blanking and forming, wherein at least two protrusions 101 for guiding and positioning the upper die 2, the lower die 1, and the stamping part 3 are respectively provided on two longitudinal edges of the parting surface of the lower die 1, and the protrusions 101 protrude upward from the parting surface of the lower die 1;

[0028] At least two grooves 201 are respectively provided on the two longitudinal sides of the parting surface of the upper mold 2 for guiding and positioning the upper mold 2, the lower mold 1 and the stamping part 3. The grooves 201 are concave downward from the parting surface of the upper mold 2.

[0029] At least two notch through holes 301 for positioning the stamping part 3 are respectively provided on the two longitudinal sides of the stamping part 3;

[0030] The protrusions 101 are located directly below the corresponding grooves 201 in a one-to-one correspondence. The shapes of the protrusions 101 on the lower die 1 are identical to the shapes of the cavities in the corresponding grooves 201 on the upper die 2. Therefore, during the stamping and closing process, the upper die 2 moves downward until it contacts and closes the stationary lower die 1, and the protrusions 101 on the lower die 1 are inserted into the corresponding grooves 201 on the upper die 2, thereby forming a guiding and positioning matching structure between the lower die 1 and the upper die 2.

[0031] The stamping part 3 is located between all the protrusions 101 on the two longitudinal edges, and the protrusions 101 correspond one-to-one to the notched through holes 301 on the stamping part 3. The shape of the side wall of the protrusion 101 is the same as the shape of the corresponding notched through holes 301 on the stamping part 3, so that during the stamping and mold closing process and after the mold closing, the side wall of the protrusion 101 is stuck in the corresponding notched through holes 301 on the stamping part 3 to form a positioning and matching structure between the protrusion 101 and the stamping part 3, preventing the stamping part 3 from moving around, being dislocated, and deforming incorrectly under the stamping pressure.

[0032] In one embodiment of the present application, two longitudinal edges of the parting surface of the lower mold 1 are respectively provided with two protrusions 101;

[0033] Two grooves 201 are respectively provided on the two longitudinal edges of the parting surface of the upper mold 2;

[0034] Two longitudinal edges of the stamping part 3 are respectively provided with two notched through holes 301 .

[0035] In one embodiment of the present application, the outer side wall surface of the protrusion 101 is vertically flush with the corresponding side wall surface of the lower mold 1.

[0036] In this application, a parting surface refers to the contact surface that separates the mold and allows the product to be removed. A mold may have one or more parting surfaces, depending on the needs. Parting surfaces can be perpendicular to, parallel to, or inclined relative to the closing direction. Parting surfaces can be single, double, or multiple, depending on the number of parting surfaces. Parting surface shapes include flat, inclined, stepped, and curved surfaces.

[0037] The methods and devices not described in detail in this utility model are all prior art and will not be described in detail.

[0038] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A composite die in an automobile stamping die, comprising an upper die and a lower die for blanking and forming, characterized in that: At least two protrusions are respectively provided on the two longitudinal sides of the parting surface of the lower mold for guiding and positioning the upper mold, the lower mold and the stamping part, and the protrusions protrude upward from the parting surface of the lower mold; At least two grooves for guiding and positioning the upper die, lower die and stamping part are respectively provided on two longitudinal sides of the parting surface of the upper die, and the grooves are recessed downward from the parting surface of the upper die; The two longitudinal edges of the stamping part are respectively provided with at least two notch through holes for positioning the stamping part; The protrusions are located one by one directly below the corresponding grooves, and the shape of the protrusions on the lower die is the same as the shape of the cavities in the corresponding grooves on the upper die, so that during the stamping and die closing process, the upper die moves downward until it contacts and closes the die with the lower die, and the protrusions on the lower die are inserted into the corresponding grooves on the upper die, thereby forming a guiding and positioning matching structure between the lower die and the upper die; The stamping part is located between all the protrusions on the two longitudinal edges, and the protrusions correspond one-to-one to the notched through holes on the stamping part. The shape of the side wall of the protrusion is the same as the shape of the corresponding notched through holes on the stamping part, so that during the stamping and mold closing process and after the mold closing, the side wall of the protrusion is stuck in the corresponding notched through holes on the stamping part to form a positioning and matching structure between the protrusion and the stamping part, preventing the stamping part from moving around, being dislocated, and deforming incorrectly under the stamping pressure.

2. The composite die in an automobile stamping die according to claim 1, characterized in that: Two longitudinal edges of the parting surface of the lower mold are respectively provided with two protrusions; Two grooves are respectively provided on the two longitudinal edges of the parting surface of the upper mold; Two lengthwise edges of the stamping part are respectively provided with two notched through holes.

3. The composite die in an automobile stamping die according to claim 1, characterized in that: The outer side wall surface of the protrusion is vertically flush with the corresponding side wall surface of the lower mold.

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