Punching punch of riveting machine

Abstract

The utility model belongs to the technical field of riveting machines, and particularly relates to a punching punch of a riveting machine, which comprises a punch, an accommodating cavity is arranged in the punch, an ejection hole is arranged at the bottom of the front end of the accommodating cavity, and the ejection hole is communicated with the front end of the punch and the accommodating cavity; the ejector rod is arranged in the containing cavity in a sliding mode, and the front end of the ejector rod extends out of the front end of the punch through the ejection hole; the elastic piece is installed in the containing cavity, and the elastic piece movably abuts against the rear end of the ejector rod; after punching is completed, the elastic piece enables the front end of the ejector rod to stretch out of the punch, so that the ejector rod pushes waste cloth generated by punching to be discharged out of the through hole of the punching lower die, the situation that the punching lower die is blocked by the waste cloth and the punching operation of the riveting machine is affected is avoided, the waste cloth does not need to be taken out of the punching lower die manually, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting machines, in particular to a punching punch of a riveting machine. Background Art

[0002] Riveting machines, also known as button-attaching machines, are widely used in garment factories and leather bag processing companies. They are mainly used to attach various types of metal buttons to knitted garments, down jackets, jeans, shoes and hats, leather and other products.

[0003] Before the buttons are nailed to the cloth, the cloth needs to be punched by a punching device of a riveting machine. For example, Chinese patent CN202320169178.3 discloses a punching and riveting switching device and a riveting machine, which include a punching part, a riveting part and a feeding part. The punching part has a punching upper die and a punching lower die. The punching upper die moves downward to punch the cloth on the punching lower die.

[0004] This patent still has some shortcomings: when the punching part completes punching the cloth, due to the thickness and material of the cloth, the waste cloth generated after punching is easy to be blocked in the through hole and the discharge slide of the punching lower die; at the same time, since the punching upper die moves down with great force to punch, it will move up and reset after the punching upper die completes punching. At this time, the punched cloth is easily brought up by the punching upper die, resulting in the punched cloth being unable to be discharged from the through hole of the punching lower die. When the through hole of the punching lower die is blocked by the waste cloth, the punching effect of the punching part will be deteriorated, or even punching cannot be performed. Therefore, it needs to be cleaned manually, which is time-consuming and labor-intensive. Summary of the invention

[0005] The utility model aims to provide a punching punch of a riveting machine, wherein a push rod is slidably arranged in the punch, and after the punching is completed, the front end of the push rod extends out of the front end of the punch under the action of an elastic member, thereby pushing the waste cloth out of the through hole of the punching lower die of the riveting machine, thereby improving the problem that the through hole of the punching lower die is easily blocked by the waste cloth.

[0006] The purpose of the utility model is achieved in this way:

[0007] A punching punch for a riveting machine, comprising:

[0008] A punch having an accommodation cavity therein, and an ejection hole is formed at the bottom of the front end of the accommodation cavity, wherein the ejection hole connects the front end of the punch and the accommodation cavity;

[0009] A push rod is slidably disposed in the accommodating cavity, and a front end of the push rod extends out of the front end of the punch through the ejection hole;

[0010] An elastic member is installed in the accommodating cavity, and the elastic member movably abuts against the rear end of the push rod.

[0011] Preferably, the adjusting member is threadedly connected in the accommodating cavity, and the rear end of the elastic member movably abuts against the adjusting member.

[0012] Preferably, the adjusting member is provided with an air guide hole for discharging the gas in the accommodating cavity.

[0013] Preferably, the front end of the adjusting member has a limiting groove, the bottom of the limiting groove is provided with the air guide hole, and the rear end of the elastic member is movably placed in the limiting groove.

[0014] Preferably, the side wall of the limiting groove is inclined toward the notch of the limiting groove, so as to guide the rear end of the elastic member to extend into the limiting groove.

[0015] Preferably, a first limiting portion is provided at the rear end of the push rod, and a second limiting portion is provided on the inner wall of the accommodating cavity;

[0016] When the front end of the push rod moves out of the front end of the punch, the second limiting portion abuts against the first limiting portion to limit the push rod from leaving the accommodating cavity.

[0017] Preferably, the rear end edge of the push rod has a positioning portion, and the front end of the elastic member movably abuts against the positioning portion.

[0018] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0019] The punch designed in the utility model is slidably connected with a push rod in the accommodating cavity. Under the action of the elastic member, the front end of the push rod extends out of the front end of the punch through the ejection hole. When the punch is pressed down to cooperate with the punching lower die of the riveting machine to punch the cloth, the cloth will overcome the elastic force of the elastic member so that the front end of the push rod retracts into the accommodating cavity. When the punching is completed, the elastic member causes the front end of the push rod to extend out of the punch, so that the push rod pushes the waste cloth generated by the punching to be discharged from the through hole of the punching lower die, thereby avoiding the waste cloth clogging the punching lower die and affecting the punching operation of the riveting machine, and there is no need to manually take out the waste cloth from the punching lower die, thus saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a cross-sectional view of the utility model.

[0022] Figure 3 It is a cross-sectional view of the punch of the utility model.

[0023] Figure 4 It is an exploded view of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the top rod of the utility model.

[0025] Figure numerals: 1, punch; 11, accommodating cavity; 12, limiting portion 2; 13, ejection hole; 2, ejector rod; 21, limiting portion 1; 22, positioning portion; 3, elastic member; 4, adjusting member; 40, air guide hole; 41, limiting groove. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0027] Combination Figures 1 to 3 A punching punch of a riveting machine comprises: a punch 1, in which a receiving cavity 11 is provided, and a ejection hole 13 is provided at the bottom of the front end of the receiving cavity 11, and the ejection hole 13 connects the front end of the punch 1 and the receiving cavity 11; a push rod 2, which is slidably disposed in the receiving cavity 11, and the front end of the push rod 2 extends out of the front end of the punch 1 through the ejection hole 13; an elastic member 3, which is a spring or a disc spring or an elastic silicone member, and the elastic member 3 is installed in the receiving cavity 11, and the front end of the elastic member 3 movably abuts against the rear end of the push rod 2; when the punch 1 is installed on the riveting machine, the rear end of the elastic member 3 abuts on the riveting machine, thereby realizing the installation of the punching punch.

[0028] When the punching punch of the riveting machine is pressed down to punch holes, and the cloth has not been punched out, the cloth overcomes the force of the elastic member 3 to lift the push rod 2, so that the front end of the push rod 2 retracts into the accommodating chamber 11; when the punch 1 cooperates with the through hole of the punching lower die of the riveting machine to complete the punching of the cloth, under the action of the elastic member 3, the end of the push rod 2 will extend out of the front end of the punch 1, thereby ejecting the punched waste cloth from the through hole of the punching lower die of the riveting machine, so that the waste cloth is discharged from the through hole and the discharge channel, avoiding the waste cloth from clogging the through hole and the discharge channel, thereby avoiding these cloths from affecting the subsequent punching operation, and using the elastic member 3 to drive the push rod 2 to move, there is no need to manually clean the through hole, saving time and effort.

[0029] In order to facilitate the installation of the punch 1 and the elastic member 3 on the riveting machine, the punching punch further includes an adjusting member 4 which is threadedly connected in the accommodating cavity 11 , and the rear end of the elastic member 3 movably abuts against the adjusting member 4 .

[0030] A threaded portion is formed on the inner wall of the accommodating cavity 11 for threaded connection with the adjusting member 4. By rotating the position of the adjusting member 4 in the accommodating cavity 11, the adjusting member 4 squeezes the elastic member 3, thereby adjusting the force of the elastic member 3 pressing against the rear end of the push rod 2. Due to the different thicknesses of the fabrics and the different elastic deformations of the fabrics, when the punch 1 is pressed down to punch the fabric, the push rod 2 will hold the fabric. If the force of the elastic member 3 pressing against the push rod 2 is too large or the fabric is too thin, the fabric will sag downward, thereby affecting the size of the punching hole in the fabric. If the force of the elastic member 3 pressing against the push rod 2 is too small or the fabric is too thick, the fabric will be unable to be discharged from the through hole of the punching lower die. Therefore, the position of the adjusting member 4 in the accommodating cavity 11 is adjusted to change the force of the elastic member 3 pressing against the rear end of the push rod 2, thereby adjusting the force of the push rod 2 against the fabric.

[0031] like Figure 2 As shown, an air guide hole 40 is opened on the adjusting member 4, and the air guide hole 40 conducts the adjusting member 4, so as to realize the connection between the rear end of the accommodating chamber 11 and the outside world. The air guide hole 40 is used for discharging the gas in the accommodating chamber 11. When the push rod 2 retracts into the accommodating chamber 11 under the push of the cloth, the rear end of the push rod 2 will squeeze the air in the accommodating chamber 11. The air guide hole 40 prevents the air pressure in the accommodating chamber 11 from increasing and affecting the force of the push rod 2 on the cloth, thereby preventing the push rod 2 from deforming the cloth.

[0032] like Figure 2 As shown, the front end of the adjusting member 4 has a limiting groove 41, and the bottom of the limiting groove 41 is provided with an air guide hole 40. The rear end of the elastic member 3 is movably placed in the limiting groove 41. The limiting groove 41 prevents the rear end of the elastic member 3 from being stuck on the threaded portion of the side wall of the accommodating cavity 11, thereby preventing the elastic member 3 from being unable to deform in the accommodating cavity 11 or being unable to be removed from the rear end of the accommodating cavity 11.

[0033] like Figure 2 As shown, the side wall of the limiting groove 41 is inclined toward the groove opening of the limiting groove 41, so as to guide the rear end of the elastic member 3 to extend into the limiting groove 41, so that the rear end of the elastic member 3 is always placed in the limiting groove 41, thereby avoiding the threaded portion of the accommodating cavity 11 from affecting the elastic member 3.

[0034] Combination Figures 2 to 4 A limiting portion 21 is provided at the rear end of the ejector pin 2, and a limiting portion 12 is provided on the inner wall of the accommodating cavity 11. In this scheme, the limiting portion 12 is the edge of the rear end of the ejection hole 13; when the front end of the ejector pin 2 moves out of the front end of the punch 1, the limiting portion 12 abuts against the limiting portion 21, so as to limit the ejector pin 2 from being separated from the accommodating cavity 11 from the ejection hole 13.

[0035] Combination Figure 2 , Figure 4 and Figure 5The rear end edge of the push rod 2 has a positioning portion 22 , and the front end of the elastic member 3 movably abuts against the positioning portion 22 , thereby ensuring the stability of the elastic member 3 abutting against the rear end of the push rod 2 .

[0036] The rear edge of the push rod 2 is inclined toward the front end of the push rod 2 to form the positioning portion 22 mentioned above, or a positioning column protrudes from the rear end of the push rod 2, and the elastic member 3 is sleeved on the positioning column.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

[0038] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0039] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0040] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A punching punch for a riveting machine, characterized in that: include: A punch (1) having a receiving cavity (11) formed therein, an ejection hole (13) being formed at the bottom of the front end of the receiving cavity (11), the ejection hole (13) connecting the front end of the punch (1) and the receiving cavity (11); A push rod (2) is slidably disposed in the accommodating cavity (11), and the front end of the push rod (2) extends out of the front end of the punch (1) through the ejection hole (13); An elastic member (3) is installed in the accommodating cavity (11), and the elastic member (3) movably abuts against the rear end of the push rod (2).

2. A punching punch for a riveting machine according to claim 1, characterized in that: Also includes: An adjusting member (4) is threadedly connected in the accommodating cavity (11), and a rear end of the elastic member (3) movably abuts against the adjusting member (4).

3. The punching punch of a riveting machine according to claim 2, characterized in that: The regulating member (4) is provided with an air guide hole (40) for allowing the gas in the accommodating cavity (11) to be discharged.

4. The punching punch of a riveting machine according to claim 3, characterized in that: The front end of the adjusting member (4) is provided with a limiting groove (41), the bottom of the limiting groove (41) is provided with the air guide hole (40), and the rear end of the elastic member (3) is movably disposed in the limiting groove (41).

5. The punching punch of a riveting machine according to claim 4, characterized in that: The side wall of the limiting groove (41) is arranged to be inclined toward the notch of the limiting groove (41) so as to guide the rear end of the elastic member (3) to extend into the limiting groove (41).

6. A punching punch for a riveting machine according to any one of claims 1 to 5, characterized in that: A first limiting portion (21) is provided at the rear end of the push rod (2), and a second limiting portion (12) is provided on the inner wall of the accommodating cavity (11); When the front end of the push rod (2) moves out of the front end of the punch (1), the second limiting portion (12) abuts against the first limiting portion (21) to limit the push rod (2) from leaving the accommodating cavity (11).

7. The punching punch of a riveting machine according to claim 6, characterized in that: The rear end edge of the push rod (2) has a positioning portion (22), and the front end of the elastic member (3) movably abuts against the positioning portion (22).

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