Thin hexagon head trimming and stamping die structure for double-end bolt

Abstract

The utility model relates to a thin hexagon head trimming stamping die structure for a stud bolt, aiming at the stud bolt which has a thin hexagon head and needs to be trimmed, the trimming is effectively completed under the condition that the quality of parts is not reduced, the whole die can be suitable for a product which can be trimmed and has very thin thickness, the die is not limited to the standard hexagon head thickness, and the hexagon head cannot deform after being trimmed; the mold cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal part forming, and specifically relates to a trimming die structure for the thin hexagon head of a double-headed bolt. Background Art

[0002] In the machinery industry, various hardware parts are usually used for processing and installation. Fasteners are a common type of hardware part. Fasteners are a general term for a class of mechanical parts used to firmly connect two or more parts or components into a whole. A double-headed bolt is a type of hardware part used for connecting automotive components, and it tightly connects two different components through threads at both ends.

[0003] In the prior art, during the cold heading process of double-headed bolts, a traditional trimming die is used for trimming and forming. Before trimming, the blank is positioned in the main die. There is a thimble in the main die, a push rod behind the thimble, and a storage cylinder in the push rod, which is used for blank cutting and ejection. When the trimming die moves to a closing distance of about 0.5 mm, the pressure in the cylinder will cut it off and eject it into the trimming die and fall, thus completing cold heading trimming. This traditional trimming process and die structure can only perform trimming and forming on standard parts and parts with a certain strength for the opposite side and head thickness, and are not suitable for trimming and forming thin hexagon head double-headed bolts. Summary of the Utility Model

[0004] The purpose of the utility model is to address the defects existing in the trimming and forming of the thin hexagon head of double-headed bolts, and provide a trimming die structure for the thin hexagon head of double-headed bolts, which can effectively complete trimming without reducing the part quality for double-headed bolts with a relatively thin hexagon head that requires trimming.

[0005] Technical Solution

[0006] To achieve the above technical purpose, the utility model provides a trimming die structure for the thin hexagon head of double-headed bolts, which is characterized in that it includes:

[0007] A main die shell for installing a spacer, a main die core, and a main die thimble;

[0008] The spacer is installed at the front end of the main die shell and has an interference fit with the main die shell;

[0009] The main die core is installed in the main die shell to press the spacer and the blank before trimming and the main die thimble;

[0010] The main die thimble is installed in the main die core and is used for ejecting the finished double-headed bolt after trimming;

[0011] A die shell for installing a first sleeve, a second sleeve, a die thimble, a cushion rod, and a push rod;

[0012] The first sleeve is installed in the die shell;

[0013] The second sleeve is installed inside the first sleeve;

[0014] The die ejector pin is installed inside the second sleeve;

[0015] The cushion rod is installed inside the die shell, and its front end abuts against the first sleeve and the second sleeve;

[0016] The ejector rod is installed inside the cushion rod and is in contact connection with the die ejector pin.

[0017] Furthermore, the die shell includes positioning threaded holes for positioning the first sleeve and preventing the first sleeve from turning, and bolts press on the flattened position of the sleeve through the positioning threaded holes.

[0018] Beneficial effects

[0019] A structure of a trimming die for double-headed bolts with thin hexagonal heads provided by the present utility model is directed at double-headed bolts with thin hexagonal heads that need to be trimmed, and effectively completes trimming without reducing the quality of parts. Compared with the prior art, it has the following advantages:

[0020] (1) The trimming thickness can be very thin, not limited to the standard hexagonal head thickness;

[0021] (2) The hexagonal head will not be deformed after trimming;

[0022] (3) The cost of the die is low. Description of the drawings

[0023] Att Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0024] Att Figure 2 is a schematic structural diagram of a double-headed bolt in an embodiment of the present utility model;

[0025] Att Figure 3 is a schematic structural diagram of a washer in an embodiment of the present utility model;

[0026] Att Figure 4 is a schematic structural diagram of the first sleeve in an embodiment of the present utility model;

[0027] Att Figure 5 is a schematic diagram of the cutting edge of the first sleeve in an embodiment of the present utility model;

[0028] Att Figure 6 is a top view of the second sleeve in an embodiment of the present utility model; Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the specification of this application are only for the purpose of illustration and do not represent the only implementation.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is at a lower horizontal height than the second feature.

[0033] Unless otherwise defined, all the technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific implementation manners and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0034] Embodiment

[0035] As shown in the Figure 1 accompanying drawings, a structure of a trimming die for a double-headed bolt thin hexagon head includes:

[0036] The main mold shell 3 is used to install the sleeve 4, the main mold core 5 and the main mold ejector 6;

[0037] As attached Figure 3 The sleeve 4 shown is installed at the front end of the main mold shell 3 and is interference fit with the main mold shell 3, and includes a tough opening 401;

[0038] The main mold core 5 is installed in the main mold shell 3 to press the sleeve 4 and the blank 1 before trimming and the main mold ejector 6;

[0039] The main mold ejector pin 6 is installed in the main mold core 5 and is used to eject the attached Figure 2 The finished stud bolt 2 after trimming is shown;

[0040] The die shell 7 is used to install the sleeve 1 8, the sleeve 2 9, the die ejector pin 10, the pad rod 11 and the ejector rod 12; it also includes a positioning threaded hole 701; the positioning threaded hole 701 is used to position the sleeve 1 8 and prevent the sleeve 1 8 from turning, and a bolt is used to press on the sleeve flat part 801 through the positioning threaded hole 701;

[0041] As attached Figure 4 The sleeve 8 shown is installed in the die shell 7; use as shown in the attached Figure 5 The sleeve blade 802 shown cuts and separates the waste generated during the part trimming operation, including the sleeve flat part 801.

[0042] As attached Figure 1 and 6 The sleeve 2 9 shown is installed in the sleeve 1 8; the inner and outer hexagonal clearances are matched, and an appropriate gap is set between the sleeve 4 during the part trimming operation, and the sleeve 4 is driven into the sleeve 4 to complete the trimming operation of the part. The waste generated is stacked on the sleeve 2 9

[0043] The die ejector pin 10 is installed in the sleeve 9; the matching depth is the length of the part head, and is used for ejecting the material from the die end after the part trimming operation is completed.

[0044] The pad rod 11 is installed in the die shell 7, and the front end of the pad rod 11 supports the sleeve 1 8 and the sleeve 2 9;

[0045] The ejector pin 12 is installed in the pad rod 11 and is in contact with the ejector pin 10 of the punching die.

[0046] The utility model provides a trimming die structure for a thin hexagonal head of a stud bolt, which is aimed at stud bolts with thin hexagonal heads that need trimming, and can effectively complete the trimming without reducing the quality of the parts.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-described embodiments only express several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A trimming die structure for a thin hexagonal head of a stud bolt, characterized in that: It includes: A main mold shell (3) for mounting a sleeve (4), a main mold core (5) and a main mold ejector pin (6); A sleeve (4) is mounted on the front end of the main mold shell (3) and is interference fit with the main mold shell (3); A main mold core (5) is installed in the main mold shell (3) to press the sleeve (4) and the pre-trimmed blank (1) and the main mold ejector pin (6); A main mold ejector pin (6) is installed in the main mold core (5) and is used to eject the finished stud bolt (2) after trimming; The die shell (7) is used for installing the first sleeve (8), the second sleeve (9), the die ejector pin (10), the cushion rod (11) and the ejector rod (12); A sleeve (8) is installed in the die shell (7); The second sleeve (9) is installed in the first sleeve (8); A punch ejector pin (10) is installed in the second sleeve (9); A spacer rod (11) is installed in the die shell (7), with its front end supporting the first sleeve (8) and the second sleeve (9); The ejector rod (12) is installed in the pad rod (11) and is in contact with the ejector pin (10).

2. A stud bolt thin hexagonal head trimming die structure as claimed in claim 1, characterized in that: The die shell (7) comprises a positioning threaded hole (701), and the positioning threaded hole (701) is used to position the sleeve (8) and prevent the sleeve (8) from turning. The bolt is pressed on the sleeve flat part (801) through the positioning threaded hole (701).

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