Rivet stamping die

Abstract

The utility model discloses a rivet stamping die which comprises a main die frame and a stamping die frame, a main die core is arranged on the main die frame, an avoiding groove and a rivet body shaping groove are formed in the main die core, and a punching rod is arranged in the rivet body shaping groove. A protruding punching die core is arranged on the punching die frame, a round head shaping groove is formed in the punching die core, when the punching die frame punches the main die frame, the punching die core is inserted into the receding groove, and the nail body shaping groove and the round head shaping groove work in a matched mode. According to the utility model, the punching rod is arranged in the punching groove, and when a rivet blank is punched and formed, the rivet blank is synchronously punched by the punching rod, so that the combination of punching forming and punching is realized, the production process of the rivet is simplified, and the production efficiency of the rivet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to a rivet stamping die. Background Art

[0002] A rivet is a nail-shaped object used to connect two parts (or components) with a through hole and a cap at one end. In riveting, the riveted parts are connected by their own deformation or interference. There are many types of rivets, and they are not restricted by form.

[0003] Rivets are generally formed by stamping, using a punch press and a stamping die to process the blank into rivets. After some rivets are stamped, they need to be punched in the middle of the axial direction, which requires secondary processing of the rivets, greatly reducing the production efficiency of the rivets. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a rivet stamping die, which can complete the stamping and punching steps at the same time, thereby improving the production efficiency of rivets.

[0005] To this end, the technical solution of the utility model is: a rivet stamping die, including a main die frame and a punching die frame, the main die frame is provided with a main die core, the main die core is provided with an avoidance groove and a nail body molding groove, and the nail body molding groove is provided with a punching rod; the punching die frame is provided with a protruding die core, the die core is provided with a round head molding groove, when the punching die frame punches the main die frame, the die core is inserted into the avoidance groove, and the nail body molding groove and the round head molding groove work together.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the avoidance groove is a tapered groove, and the front end of the die core is a tapered block that matches the avoidance groove.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the bottom end of the punching rod is fixedly connected to the main mold core, and the punching rod is coaxially arranged with the nail body shaping groove.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of push rods are arranged under the main mold core, and the push rods are pushed by a power mechanism; a through hole for inserting the push rod is provided at the connection between the bottom end of the punching rod and the main mold core, and the push rod can be inserted into the nail body shaping groove from the side of the punching rod.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a guide sleeve is provided on the main die frame, a guide column is provided on the punch die frame, and the guide sleeve and the guide column work in coordination.

[0010] When using,

[0011] 1. Place the rivet blank into the nail body shaping groove of the main mold core;

[0012] 2. The die frame is fixed on the punching machine, and the punching machine drives the die frame to punch downward;

[0013] 3. The die core on the die frame squeezes the rivet blank downward, so that the rivet blank is formed in the nail body shaping groove and the round head shaping groove, and due to the presence of the punching rod, a punched rivet is obtained;

[0014] 4. After the rivet is formed, the punch die frame leaves the main die frame, and the push rod below is inserted upward into the nail body molding groove to push out the formed rivet for easy material removal.

[0015] Compared with the prior art, the utility model has the beneficial effects of: a punching rod is arranged in the punching groove, and when the rivet blank is punched, it is punched by the punching rod simultaneously, thereby realizing the two-in-one of stamping and punching, simplifying the production process of rivets, and improving the production efficiency of rivets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of placing blanks in the utility model;

[0018] Figure 3 This is a schematic diagram of the stamping state of the utility model;

[0019] Figure 4 This is a schematic diagram of the stamping completion of the utility model;

[0020] Figure 5 It is a schematic diagram of the material removal state of the utility model.

[0021] Marked in the figure are: main mold frame 1, main mold core 11, avoidance groove 12, nail body shaping groove 13, punching rod 14, guide sleeve 15, die frame 2, die core 21, round head shaping groove 22, guide column 23, push rod 3, rivet 4, rivet blank 41. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating 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 cannot be understood as limiting the specific protection scope of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0024] See the attached drawings. The rivet stamping die described in this embodiment includes a main die frame 1 and a punching die frame 2. The main die frame 1 is fixed on the base. A main die core 11 is provided on the main die frame 1. An avoidance groove 12 and a nail body shaping groove 13 are provided on the upper side of the main die core 11. A punching rod 14 is provided in the nail body shaping groove 13. The avoidance groove 12 is a conical groove, and the upper end diameter is larger than the lower end diameter. The nail body shaping groove 13 is a cylindrical structure, and the hole diameter is consistent with the lower end diameter of the avoidance groove 12. The punching rod 14 is a cylindrical structure, which is coaxially arranged with the nail body shaping groove 13. The bottom of the punching rod 14 extends an annular surface to be fixedly connected with the main die core 11, and a plurality of through holes are provided on the annular surface.

[0025] The die frame 2 is provided with a protruding die core 21, and the die core 21 is provided with a round head shaping groove 22. The die core 21 is a conical structure, which can be inserted into the avoidance groove 12 of the main die frame 1, and the conical structure makes it easier for the two to align. The main die frame 1 is provided with a guide sleeve 15, and the die frame 2 is provided with a guide column 23. When the die frame 2 punches the main die frame 1, the guide sleeve 15 cooperates with the guide column 23, and at the same time, the die core 21 is inserted into the avoidance groove 12, and the nail body shaping groove 13 cooperates with the round head shaping groove 22 to form a forming cavity for the rivet 4.

[0026] A plurality of push rods 3 are provided under the main mold core 11, and the push rods 3 are pushed by a power mechanism (conventional power sources such as hydraulic cylinders can be selected); the push rods 3 can be inserted into the nail body molding groove 13 from the through hole on the side of the punching rod 14, and the formed rivet 4 can be ejected from the nail body molding groove 13, which is convenient for users to take materials.

[0027] When using,

[0028] 1. The user places the rivet blank 41 into the nail body shaping groove 13 of the main mold core 11. At this time, the push rod 3 is located at the bottom, and the rivet blank 41 is placed upright in the groove;

[0029] 2. The die frame 2 is fixed on the punching machine, and the punching machine can drive the die frame 2 to punch downward, and the die frame 2 is located directly above the main die frame 1;

[0030] 3. The punching machine starts working, and the die core 21 on the die frame 2 presses the rivet blank 41 downward, so that the rivet blank 41 is formed in the nail body shaping groove 13 and the round head shaping groove 22. Due to the existence of the punching rod 14, a hollow structure is formed in the middle of the nail body of the rivet 4, and the punched rivet 4 is directly obtained;

[0031] 4. After the rivet 4 is formed, the punching machine drives the die frame 2 to move upward and away from the main die frame 1. The push rod 3 under the main die frame 1 is inserted upward into the nail body shaping groove 13 to push out the formed rivet 4 for easy material removal.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rivet stamping die, characterized in that: It includes a main mold frame and a punching die frame. The main mold frame is provided with a main mold core, and the main mold core is provided with an avoidance groove and a nail body molding groove, and the nail body molding groove is provided with a punching rod; the punching die frame is provided with a protruding punching die core, and the punching die core is provided with a round head molding groove. When the punching die frame punches the main mold frame, the punching die core is inserted into the avoidance groove, and the nail body molding groove and the round head molding groove work together.

2. A rivet punching die according to claim 1, characterized in that: The avoidance groove is a tapered groove, and the front end of the punch core is a tapered block that matches the avoidance groove.

3. A rivet punching die according to claim 1, characterized in that: The bottom end of the punching rod is fixedly connected to the main mold core, and the punching rod is coaxially arranged with the nail body shaping groove.

4. A rivet punching die as claimed in claim 3, characterized in that: A plurality of push rods are arranged below the main mold core, and the push rods are pushed by a power mechanism; a through hole for inserting the push rods is arranged at the connection between the bottom end of the punching rod and the main mold core, and the push rods can be inserted into the nail body shaping groove from the side of the punching rod.

5. A rivet punching die as claimed in claim 1, characterized in that: The main die frame is provided with a guide sleeve, the punch die frame is provided with a guide column, and the guide sleeve and the guide column work in coordination.

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