TWI757115B - Manufacturing method for blind rivets - Google Patents

Abstract

This invention is about a manufacturing method for blind rivets, which consists of cutting the tie bar from steel wire to the desired length, forming a top support section at one end, forming an outer thread by rolling the teeth at its outer edge, and heat treating it by tempering at 380°C ± 50°C., and the outer tube body is cut by cutting the steel wire according to the required length, and a perforation is formed in the middle of it through which the tie bar should be inserted, and an inserting part is formed on the outer edge of one end of it, which is subjected to optical heat treatment, heated by moving at a temperature of 1100°C ± 100°C, then electroplated, the tie bar can be inserted in the perforation of the outer tube body, and is supported by the top support on the outer side of one end of the outer tube body different from the inserting part to complete the assembly. Accordingly, when the workpiece is riveted and fixed, it can have excellent support strength, so that the workpiece can be fixed without loosening and has better convenience of use, and to increase the practical efficacy characteristics in its overall implementation.

Description

Blind rivet manufacturing method

The present invention relates to a method for manufacturing blind rivets, in particular to a method that enables it to have excellent supporting strength when riveting and fixing workpieces, so that the workpieces can be surely combined and fixed without loosening, so as to have better ease of use, And in its overall implementation and use, it has more practical efficacy characteristics.

Generally speaking, when various workpieces such as various metal plates and mechanical structures are to be permanently fixed, it is often seen that blind rivets are used for riveting. .

The blind rivet is mainly provided with an outer tube, an outer edge of one end of the outer tube is protruded and formed with a clasp, a pull rod is passed through the outer tube, and a top support section is formed at one end of the pull rod, so that the pull rod is supported by the top The outer tube is supported on the outer side of one end of the outer tube that is different from the catching part; so that in operation and use, after the outer tube passes through the fixing hole opened by the workpiece, the catching part is supported on the fixing hole. At one end, the pull rod is pulled with a corresponding tool, so that the top support part of the pull rod presses the outer tube toward the catching part, and the outer pipe is pressed by the top support part of the pull rod through the catching part and the outer tube The deformed part fixes the workpiece clamp, and at the same time, the pull rod is pulled by the tool and breaks.

However, although the above-mentioned blind rivet can achieve the expected effect of riveting and fixing the workpiece, it is also found in the actual assembly process that the support strength of this structure is limited after the workpiece is riveted, so that the workpiece will still be loose. It is produced, which causes great inconvenience in its use, so that there is still room for improvement in its overall structural design.

The reason is, in view of this, the inventor, adhering to years of rich experience in design, development and actual production in the related industry, researches and improves the existing measurement methods and deficiencies, and provides a blind rivet manufacturing method, in order to achieve better practical value. the purpose of.

The main purpose of the present invention is to provide a blind rivet manufacturing method, which mainly enables it to have excellent supporting strength when riveting and fixing workpieces, so that the workpieces can be surely combined and fixed without loosening, so as to have better convenience of use , and in its overall implementation and use, it will increase the practical efficacy characteristics.

The main purpose and effect of the blind rivet manufacturing method of the present invention are achieved by the following specific technical means:

Its main system includes a tie rod and an outer tube body, and its production method is as follows:

The tie rod is cut from the steel wire according to the required length, and a top support is formed at one end, and the outer thread is formed by rolling teeth on the outer edge, and then heat-treated at 380℃±50 ℃ quenching and tempering heating;

The outer tube body is made by cutting the steel wire according to the required length, and a hole is formed in the middle corresponding to the tie rod, and an inlaid part is formed on the outer edge of one end, which is subjected to optical heat treatment, through 1100℃±100℃ temperature moving heating, and then carry out electroplating treatment;

In this way, the tie rod can be passed through the through hole of the outer tube body, and the tie rod can be supported on the outside of an end of the outer tube body that is different from the catching part with the top support part, so as to complete the assembly. .

A preferred embodiment of the blind rivet manufacturing method of the present invention, wherein, the outer tube body is formed with a clamping portion protrudingly formed in the through hole corresponding to the inserting catch portion.

The present invention is a preferred embodiment of the blind rivet manufacturing method, wherein, the optical heat treatment method performed on the outer tube body is optical heat treatment performed by using a laser.

In order to make the technical content used in the present invention, the purpose of the invention and the effect achieved by the present invention more completely and clearly disclosed, it is explained in detail below, and please refer to the disclosed drawings and drawing numbers together:

First of all, please refer to the schematic diagram of the production process of the present invention in the first figure and the schematic diagram (1) of the operation state of the present invention in the second figure. The present invention mainly includes a tie rod (1) and an outer tube body (2). Methods as below:

The tie rod (1) is used to cut the steel wire according to the required length, and a top support part (11) is formed at one end, and the outer thread (12) is formed by rolling teeth on the outer edge, and then the outer thread (12) is formed. It is subjected to heat treatment, and is subjected to tempering heating at 380° C.±50° C. to form the tie rod ( 1 ).

The outer tube body (2) is cut from a steel wire according to a required length, and a hole (21) is formed in the middle corresponding to the tie rod (1), and an inserting stop is formed at the outer edge of one end of the tube body (2). At the same time, a clamping part (23) is protrudingly formed in the through hole (21) corresponding to the latching part (22), and is subjected to optical heat treatment, and the optical heat treatment method may be optical In the heat treatment, the outer tube body ( 2 ) is fabricated and molded by heating through a temperature shift of 1100° C.±100° C., and then performing electroplating treatment.

In order to use the present invention in operation, the pull rod (1) can be passed through the through hole (21) of the outer pipe body (2), so that the pull rod (1) is supported by the top support portion (11). On the outer side of one end of the outer tube body (2) that is different from the engaging portion (22), the outer tube body (2) is passed through the fixing hole (31) opened by the workpiece (3), so that the outer tube body (2) is The engaging portion (22) of the body (2) is supported on the outer side of one end of the fixing hole (31), and the pull rod (1) is pulled by a riveting tool (4), at this time the top support of the pull rod (1) The part (11) will press the outer tube body (2) in the direction of the engaging part (22) [please also refer to the third figure, the schematic diagram of the operation of the present invention (2)], and The securing portion (23) of the outer tube body (2) protrudingly formed in the through hole (21) corresponding to the latching portion (22) will also be interlocked and fixed with the inner edge of the pull rod (1), and As the outer tube body (2) is pressed and deformed by the top support portion (11), the deformed portion of the outer tube body (2) will be supported against the workpiece (3) [please refer to Fig. 4 together again] The action diagram of the present invention in use state (3)], finally the tie rod (1) is pulled and broken by the riveting tool (4), and the outer tube body (2) is inserted into the catch portion (22) and received by the riveting tool (4). The top support portion (11) of the pull rod (1) squeezes the deformed part, and the workpiece (3) is clamped and fixed. The securing portion (23) is inserted and fixed without falling off [please also refer to the schematic diagram (4) of the operation state of the present invention in Fig. 5).

In this way, the tensile force of the present invention can reach 44941 (Fm) in use [please refer to the tensile force experiment curve of the blind rivet of the present invention in the appendix again], and under the same specifications, The tensile force of the existing blind rivet products is only 42101(Fm) [please also refer to the tensile force experiment curve of the existing blind rivets in Annex II].

From the above, it can be seen from the description of the use and implementation of the present invention that, compared with the prior art means, the present invention mainly enables it to have excellent supporting strength when the workpiece is riveted and fixed, so that the workpiece can be riveted and fixed. It is indeed combined and fixed without loosening, so as to have better convenience of use, and to increase the utility function in its overall implementation and use.

However, the foregoing embodiments or drawings do not limit the product structure or usage of the present invention, and any appropriate changes or modifications made by those with ordinary knowledge in the technical field should be regarded as not departing from the scope of the present invention.

To sum up, the embodiment of the present invention can indeed achieve the expected use effect, and the specific structure disclosed is not only not seen in similar products, but also has not been disclosed before the application, which fully complies with the provisions of the patent law In accordance with the requirements, I would like to file an application for an invention patent in accordance with the law, and I sincerely request that it be reviewed and granted the patent.

1: Pull rod

11: Top support

12: External thread

2: outer tube body

21: Perforation

22: Embedding

23: Clamping part

3: Workpiece

31: Fixing hole

4: Riveting tools

Figure 1: Schematic diagram of the production process of the present invention

Figure 2: Schematic diagram of the use state of the present invention (1)

Figure 3: Schematic diagram of the use state of the present invention (2)

Figure 4: Schematic diagram of the use state of the present invention (3)

Figure 5: Schematic diagram of the use state of the present invention (4)

Attachment 1: Graph of tensile force experiment of blind rivet of the present invention

Attachment 2: Experimental Curve of Tensile Force of Existing Blind Rivets

1: Pull rod

11: Top support

12: External thread

2: outer tube body

21: Perforation

22: Embedding

23: Clamping part

3: Workpiece

31: Fixing hole

Claims (3)

A method for manufacturing blind rivets, which mainly includes a tie rod and an outer tube body, and the manufacturing method is as follows: The tie rod is cut from the steel wire according to the required length, and a top support is formed at one end, and the outer thread is formed by rolling teeth on the outer edge, and then heat-treated at 380℃±50 ℃ quenching and tempering heating; The outer tube body is made by cutting the steel wire according to the required length, and a hole is formed in the middle corresponding to the tie rod, and an inlaid part is formed on the outer edge of one end, which is subjected to optical heat treatment, through 1100℃±100℃ temperature moving heating, and then carry out electroplating treatment; In this way, the tie rod can be passed through the through hole of the outer tube body, and the tie rod can be supported on the outside of an end of the outer tube body that is different from the catching part with the top support part, so as to complete the assembly. . The method for manufacturing a blind rivet according to claim 1, wherein the outer tube body is formed with a clamping portion in the through hole corresponding to the engaging catch portion. The method for manufacturing a blind rivet according to claim 1, wherein the optical heat treatment method performed on the outer tube body is optical heat treatment performed by using a laser.

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