Lower die of button sewing machine

Abstract

The utility model belongs to the technical field of button sewing machines, and particularly relates to a lower die of a button sewing machine. The limiting sleeve is arranged at the upper end of the main shaft in a sleeving manner, and a guide groove is formed in the limiting sleeve; the limiting shaft is movably mounted in the accommodating cavity, and the upper end of the limiting shaft extends out of the upper end of the main shaft and forms a positioning part in the guide groove; the first elastic piece is arranged on the main shaft in a sleeving mode, and the first elastic piece movably abuts against the limiting sleeve and is used for enabling the limiting sleeve to have the trend of moving towards the upper end of the main shaft; the second elastic piece is installed in the containing cavity, movably abuts against the limiting shaft and is used for enabling the upper end of the limiting shaft to stretch out of the upper end of the main shaft; when the limiting sleeve is arranged at the upper end of the main shaft under the action of the elastic piece I, the upper end of the positioning part does not extend out of the notch of the guide groove; the air hole buckle is guided to the upper end of the main shaft through the guide groove, the positioning part can be sleeved with the air hole buckle, and therefore it is guaranteed that the air hole buckle accurately falls into the upper end of the main shaft, and the feeding accuracy of the air hole buckle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of button sewing machines, in particular to a lower mould of a button sewing machine. Background Art

[0002] Eyelet buttons are a type of button that is often used on clothing accessories such as the exit of the hat of casual clothing with a drawstring. They can also be used directly as decoration on the surface of clothing or other accessories. In the clothing production process, a button sewing machine is required to staple the eyelet buttons to the clothing.

[0003] For example, an automatic button sewing machine disclosed in Chinese patent CN202210512867.X includes a lower button feeding assembly arranged on the upper surface of a bottom frame, the lower button feeding assembly includes a bottom plate fixedly connected to the bottom frame, a button mold is arranged at one end of the outside of the bottom plate, and a feeding rod is pushed by a cylinder to feed the material, and the button is clamped together with a material hook through one end of the feeding rod, and when the arc shape of one end of the material hook is separated from the groove on one side of the side rod, the spring is squeezed to clamp the button, and when the arc shape of the protruding end enters the groove on one side of the side rod, the spring is restored, thereby releasing the clamping of the button, and the button falls to the upper end of the button mold;

[0004] This patent has some shortcomings. The button mold only positions the eyelet by the limiting shaft on the center shaft. When the eyelet moves and falls to the upper end of the button mold, due to the error in the movement of the machine's feed rod, it is difficult for the eyelet to align with the limiting shaft, so that the eyelet cannot be accurately put on the limiting shaft, resulting in a deviation in the position of the eyelet on the button mold, causing the eyelet to be unstable after being sewn to the fabric, or even unable to be fixed to the fabric. Summary of the invention

[0005] The purpose of the utility model is to provide a lower mold of a button sewing machine, by providing a limit sleeve on the upper end of the main shaft, the limit sleeve guides the eyelet to the upper end of the main shaft through a guide groove and enables the eyelet to be accurately sleeved on the positioning part of the limit shaft, thereby improving the problem of position deviation of the eyelet when it is moved to the button mold.

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

[0007] A lower mold of a button sewing machine, comprising:

[0008] A main shaft, in which a receiving cavity is provided;

[0009] A limiting sleeve, which is sleeved on the upper end of the main shaft, and a guide groove is opened in the limiting sleeve to guide the air eye buckle to move to the upper end of the main shaft;

[0010] A limiting shaft is movably mounted in the accommodating cavity, and the upper end of the limiting shaft extends out of the upper end of the main shaft and forms a positioning portion in the guide groove for positioning the eyelet;

[0011] An elastic member 1 is sleeved on the main shaft, and the elastic member 1 movably abuts against the limiting sleeve, so as to make the limiting sleeve have a tendency to move toward the upper end of the main shaft;

[0012] A second elastic member is installed in the accommodating cavity, and the second elastic member movably abuts against the limiting shaft, so as to make the upper end of the limiting shaft extend out of the upper end of the main shaft;

[0013] When the limiting sleeve is placed on the upper end of the main shaft under the action of the elastic member 1, the upper end of the positioning portion does not extend out of the notch of the guide groove.

[0014] Preferably, a mold groove is formed at the upper end of the main shaft for positioning the eyelet.

[0015] Preferably, the cross section of the connecting portion between the groove opening of the mold groove and the groove bottom of the mold groove is arc-shaped.

[0016] Preferably, the inner wall of the guide groove of the limiting sleeve has a limiting portion 1, and the outer wall of the upper end of the main shaft has a limiting portion 2;

[0017] When the elastic member 1 movably abuts against the limiting sleeve, the limiting portion 1 movably abuts against the limiting portion 2, thereby limiting the limiting sleeve from being separated from the main shaft.

[0018] Preferably, the inner wall of the accommodating cavity of the main shaft has a limiting portion three, and the outer wall of the limiting shaft has a limiting portion four;

[0019] When the second elastic member movably abuts against the limiting shaft, the third limiting portion movably abuts against the fourth limiting portion, thereby limiting the limiting shaft from being separated from the main shaft.

[0020] Preferably, a connecting seat is installed at the lower end of the main shaft, and the connecting seat movably abuts against the elastic member 1 and the elastic member 2.

[0021] Preferably, a connecting groove is formed at the upper end of the connecting seat, a connecting hole is formed on the side wall of the connecting groove, the connecting hole connects the connecting groove with the outside, and a fixing piece is provided on the connecting hole;

[0022] A slot is provided on the outer side wall of the lower end of the main shaft;

[0023] When the lower end of the main shaft is inserted into the connecting groove, the end of the fixing member passes through the connecting hole and is placed in the clamping groove, so that the main shaft is installed on the connecting seat.

[0024] Preferably, a threaded hole is formed at the upper end of the connecting seat, and a threaded portion corresponding to the threaded hole is formed on the outer side wall of the lower end of the main shaft.

[0025] Preferably, the upper end of the positioning portion of the limiting shaft has a guiding surface inclined toward the lower end of the limiting shaft, for guiding the eyelet buckle to be sleeved on the limiting shaft.

[0026] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0027] The upper end of the main shaft designed by the utility model is provided with a limiting sleeve, and the guide groove of the limiting sleeve can guide the eyelet to the upper end of the main shaft, and enable the eyelet to be accurately sleeved on the positioning part of the limiting shaft, thereby ensuring that the eyelet falls accurately into the upper end of the main shaft, ensuring the stability and accuracy of the eyelet moving into the lower mold, thereby ensuring that the eyelet can be accurately sewn onto clothing by the button sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of embodiment 1.

[0029] Figure 2 It is a cross-sectional view of the first embodiment.

[0030] Figure 3 This is an exploded view of the first embodiment.

[0031] Figure numerals: 1. main shaft; 11. accommodating cavity; 12. mold groove; 13. limiting part two; 14. limiting part three; 15. clamping groove; 2. limiting sleeve; 21. guide groove; 22. limiting part one; 3. limiting shaft; 30. positioning part; 31. limiting part four; 32. guide surface; 4. elastic part one; 5. elastic part two; 6. connecting seat; 61. connecting groove; 62. connecting hole. DETAILED DESCRIPTION

[0032] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] A lower mold of a button sewing machine comprises: a main shaft 1, a limiting sleeve 2, a limiting shaft 3, an elastic member 1 4, an elastic member 2 5 and a connecting seat 6. When the eyelet button is transported to the upper end of the lower mold by the clamping device of the button sewing machine, the eyelet button first slides into the limiting sleeve 2, and is accurately sleeved on the limiting shaft 3 with the assistance of the limiting sleeve 2, thereby ensuring the accuracy and stability of the eyelet button feeding, facilitating the subsequent button sewing operation of the button sewing machine, ensuring that the eyelet button can be accurately sewn onto clothing, and improving the sewing yield rate.

[0035] Specific combination Figure 1 and Figure 2A accommodating cavity 11 is provided in the main shaft 1, and a limiting sleeve 2 is sleeved on the upper end of the main shaft 1, and a guide groove 21 is provided in the limiting sleeve 2 for guiding the eyelet buckle to move to the upper end of the main shaft 1; the limiting shaft 3 is movably installed in the accommodating cavity 11, and the upper end of the limiting shaft 3 extends out of the upper end of the main shaft 1 and forms a positioning portion 30 in the guide groove 21 for positioning the eyelet buckle; an elastic member 4 is sleeved on the main shaft 1, and the elastic member 4 movably abuts against the limiting sleeve 2, so that the limiting sleeve 2 has a tendency to move toward the upper end of the main shaft 1; an elastic member 2 5 is installed in the accommodating cavity 11, and the elastic member 2 5 movably abuts against the limiting shaft 3, so that the upper end of the limiting shaft 3 extends out of the upper end of the main shaft 1; the elastic member 1 4 and the elastic member 2 5 are springs or disc springs or elastic silicone members; when the limiting sleeve 2 is placed on the upper end of the main shaft 1 under the action of the elastic member 1 4, the upper end of the positioning portion 30 does not extend out of the notch of the guide groove 21.

[0036] After the eyelet moves to the upper end of the limit sleeve 2, the eyelet first falls into the guide groove 21, and then the eyelet is sleeved on the positioning portion 30 of the limit shaft 3 under the guidance of the guide groove 21, and finally the eyelet moves to the upper end of the main shaft 1 to realize the loading of the eyelet.

[0037] When the eyelet buckle is loaded, the button sewing machine rivets the upper buckle and the lower buckle of the eyelet buckle together through the cooperation of the upper mold and the lower mold. During the riveting process, the pressing device of the button sewing machine will first overcome the force of the elastic member 4 to push the limiting sleeve 2 downward from the upper end of the main shaft 1, so that the lower buckle of the eyelet buckle is separated from the guide groove 21 of the limiting sleeve 2, and then the pressing device overcomes the force of the elastic member 2 5, so that the positioning part 30 at the upper end of the limiting shaft 3 is separated from the eyelet buckle and retracted into the accommodating cavity 11 of the main shaft 1, thereby realizing the demoulding operation of the lower buckle of the eyelet buckle, thereby realizing the riveting operation of the upper and lower buckles of the eyelet buckle.

[0038] After the button sewing machine completes a riveting operation, the elastic member 1 4 drives the limiting sleeve 2 to move to the upper end of the main shaft 1 , and the elastic member 2 5 drives the upper end of the limiting shaft 3 to extend out of the upper end of the main shaft 1 .

[0039] like Figure 2 As shown, a mold groove 12 is provided at the upper end of the main shaft 1 for positioning the eyelet button. When the eyelet button falls into the guide groove 21 and is sleeved on the limiting shaft 3, the eyelet button falls into the mold groove 12 under its own gravity, thereby ensuring the accuracy of the eyelet button feeding position and the accuracy of the eyelet button sewing position on the clothes, thereby improving the sewing yield rate.

[0040] Combination Figure 2 and Figure 3The cross-section of the connecting portion between the notch of the die groove 12 and the bottom of the die groove 12 is arc-shaped. Specifically, the notch of the die groove 12 and the bottom of the die groove 12 are transitioned through an arc-shaped surface, so that the die groove 12 is adapted to the shape of the lower end of the eyelet, thereby preventing the eyelet from shaking or moving in the die groove 12, and ensuring the accurate position of the eyelet after loading.

[0041] like Figure 2 As shown, the inner wall of the guide groove 21 of the limit sleeve 2 has a limit portion 22, and the outer wall of the upper end of the main shaft 1 has a limit portion 2 13; when the elastic member 1 4 movably abuts against the limit sleeve 2, the limit portion 1 22 movably abuts against the limit portion 2 13, thereby limiting the limit sleeve 2 from detaching from the upper end of the main shaft 1, thereby ensuring the stability of the limit sleeve 2 connected to the main shaft 1.

[0042] like Figure 2 As shown, the inner wall of the accommodating cavity 11 of the main shaft 1 has a limiting portion 3 14, and the outer wall of the limiting shaft 3 has a limiting portion 4 31; when the elastic member 2 5 movably abuts against the limiting shaft 3, the limiting portion 3 14 movably abuts against the limiting portion 4 31, thereby limiting the limiting shaft 3 from separating from the main shaft 1.

[0043] Combination Figures 1 to 3 The connecting seat 6 is installed at the lower end of the main shaft 1, and the connecting seat 6 is connected to the sewing machine by means of a snap connection or a screw connection. The upper end of the connecting seat 6 movably abuts against the elastic member 1 4 and the elastic member 2 5. The connecting seat 6 is used to install the main shaft 1, the limiting sleeve 2, the limiting shaft 3, the elastic member 1 4 and the elastic member 2 5 on the button sewing machine; when the lower mold needs to be replaced, it is only necessary to remove the connecting seat 6 from the button sewing machine, and the operation is simple and convenient.

[0044] Combination Figures 1 to 3 A connecting groove 61 is provided at the upper end of the connecting seat 6, and a connecting hole 62 is provided on the side wall of the connecting groove 61. The connecting hole 62 conducts the connecting groove 61 and the outside. A fixing piece is provided in the connecting hole 62, and the fixing piece is a bolt or a pin; a clamping groove 15 is provided on the outer side wall of the lower end of the main shaft 1, and the clamping groove 15 is a ring groove or a clamping hole; when the lower end of the main shaft 1 is inserted into the connecting groove 61, the end of the fixing piece passes through the connecting hole 62 and is placed in the clamping groove 15, so that the lower end of the main shaft 1 is installed in the connecting groove 61 of the connecting seat 6, and at the same time, the lower end of the elastic member 5 is movably abutted in the connecting groove 61.

[0045] The upper end of the positioning portion 30 of the limiting shaft 3 has a guiding surface 32 inclined toward the lower end of the limiting shaft 3 for guiding the eyelet buckle to be sleeved on the limiting shaft 3, thereby ensuring that the eyelet buckle can be accurately sleeved on the limiting shaft 3.

[0046] Embodiment 2:

[0047] The design of this embodiment is basically the same as that of the first embodiment, except that:

[0048] A threaded hole is formed at the upper end of the connecting seat 6, and a threaded portion matching the threaded hole is formed on the outer side wall of the lower end of the main shaft 1. The main shaft 1 and the connecting seat 6 are connected together by threads.

[0049] Embodiment three:

[0050] The design of this embodiment is basically the same as that of the first embodiment, except that, in order to save costs, the connecting socket 6 does not exist.

[0051] Specifically, the connecting seat 6 is not installed at the lower end of the main shaft 1, and the main shaft 1 is directly installed on the mounting plate of the button sewing machine by means of threaded connection or clamping, and the lower ends of the elastic member 1 4 and the elastic member 2 5 are directly and movably abutted against the mounting plate.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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 lower mold of a button sewing machine, characterized in that: include: A main shaft (1) having a receiving cavity (11) formed therein; A limiting sleeve (2) is sleeved on the upper end of the main shaft (1), and a guide groove (21) is provided in the limiting sleeve (2) for guiding the eyelet to move to the upper end of the main shaft (1); A limiting shaft (3) is movably mounted in the accommodating cavity (11), and the upper end of the limiting shaft (3) extends out of the upper end of the main shaft (1) and forms a positioning portion (30) in the guide groove (21) for positioning the eyelet; An elastic member (4) is sleeved on the main shaft (1), and the elastic member (4) movably abuts against the limiting sleeve (2) so as to make the limiting sleeve (2) have a tendency to move toward the upper end of the main shaft (1); A second elastic member (5) is installed in the accommodating cavity (11), and the second elastic member (5) movably abuts against the limiting shaft (3) so as to make the upper end of the limiting shaft (3) extend out of the upper end of the main shaft (1); When the limiting sleeve (2) is placed on the upper end of the main shaft (1) under the action of the elastic member 1 (4), the upper end of the positioning portion (30) does not extend out of the notch of the guide groove (21).

2. The lower mold of a button sewing machine according to claim 1, characterized in that: The upper end of the main shaft (1) is provided with a mold groove (12) for positioning the eyelet.

3. The lower mold of a button sewing machine according to claim 2, characterized in that: The cross section of the connection portion between the notch of the die groove (12) and the groove bottom of the die groove (12) is arc-shaped.

4. A lower mold of a button sewing machine according to any one of claims 1 to 3, characterized in that: The inner wall of the guide groove (21) of the limiting sleeve (2) has a limiting portion 1 (22), and the outer wall of the upper end of the main shaft (1) has a limiting portion 2 (13); When the elastic member 1 (4) movably abuts against the limiting sleeve (2), the limiting portion 1 (22) movably abuts against the limiting portion 2 (13), thereby limiting the limiting sleeve (2) from separating from the main shaft (1).

5. The lower mold of a button sewing machine according to claim 4, characterized in that: The inner wall of the accommodating cavity (11) of the main shaft (1) is provided with a third limiting portion (14), and the outer wall of the limiting shaft (3) is provided with a fourth limiting portion (31); When the second elastic member (5) movably abuts against the limiting shaft (3), the third limiting portion (14) movably abuts against the fourth limiting portion (31), thereby limiting the limiting shaft (3) from separating from the main shaft (1).

6. A lower mold of a button sewing machine according to claim 1, 2, 3 or 5, characterized in that: Also includes: A connecting seat (6) is installed at the lower end of the main shaft (1), and the connecting seat (6) movably abuts against the elastic member 1 (4) and the elastic member 2 (5).

7. The lower mold of a button sewing machine according to claim 6, characterized in that: The upper end of the connecting seat (6) is provided with a connecting groove (61), the side wall of the connecting groove (61) is provided with a connecting hole (62), the connecting hole (62) connects the connecting groove (61) and the outside, and the connecting hole (62) is provided with a fixing piece; A slot (15) is provided on the outer side wall of the lower end of the main shaft (1); When the lower end of the main shaft (1) is inserted into the connecting groove (61), the end of the fixing member passes through the connecting hole (62) and is placed in the clamping groove (15), thereby achieving the main shaft (1) being mounted on the connecting seat (6).

8. The lower mold of a button sewing machine according to claim 6, characterized in that: A threaded hole is provided at the upper end of the connecting seat (6), and a threaded portion corresponding to the threaded hole is provided on the outer side wall of the lower end of the main shaft (1).

9. A lower mold of a button sewing machine according to claim 1 or 2 or 3 or 5 or 7 or 8, characterized in that: The upper end of the positioning portion (30) of the limiting shaft (3) has a guiding surface (32) inclined toward the lower end of the limiting shaft (3) and used for guiding the eyelet buckle to be sleeved on the limiting shaft (3).

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