Punch rod assembly and upper die mechanism of button sewing machine

Abstract

The technical scheme belongs to the technical field of button sewing machines, and particularly relates to a punch rod assembly and an upper die mechanism of a button sewing machine, the punch rod assembly comprises a movable punch rod, an upper die assembly, a lower die assembly and an upper die assembly, the lower end of the movable punch rod is concavely provided with a mounting cavity, and a threaded cavity is formed in the center of the bottom of the mounting cavity; a threaded column is arranged at the upper end of the adjusting seat, and a fixing cavity is formed in the lower end; the upper end part of the upper mold is arranged in the fixed cavity; wherein the upper end of the adjusting seat is inserted into the mounting cavity, the threaded column is in threaded connection with the interior of the threaded cavity, and the position of the threaded column in the threaded cavity is adjusted by rotating the adjusting seat arranged outside the mounting cavity, so that the fixing position of the upper mold is adjusted; at least one first through hole is formed in the adjusting seat, a fixing piece is movably arranged in the first through hole, and the fixing piece movably abuts against the side wall of the upper die; at least one second through hole is formed in the movable punching rod, a locking piece is movably arranged in the second through hole, and the locking piece movably abuts against the side wall of the adjusting base.

Description

Technical Field

[0001] The present technical solution relates to the technical field of button sewing machines, and in particular to a punch assembly and an upper die mechanism of a button sewing machine. Background Art

[0002] The button sewing machine is used to install buttons on fabrics. When the button sewing machine is working, it is usually necessary to punch holes in the fabric first, and then sew the buttons at the holes. When sewing buttons of different types, since different types of buttons have different thicknesses, it is necessary to adjust the distance that the upper mold of the button sewing machine extends so that the buttons can be installed on the fabric.

[0003] Chinese patent CN219537559U discloses an upper die mechanism with adjustable vertical displacement for an automatic button sewing machine. The connection structure of the upper die mechanism is as follows: an adjusting screw is fixedly arranged in an adjusting cavity of an upper shaft through a fixing pin, a die sleeve is placed in the adjusting cavity and is threadedly connected to the adjusting screw, an upper die is arranged at the lower end of the die sleeve, and the upper die moves up and down by rotating the die sleeve. This upper die mechanism has the following disadvantages during assembly:

[0004] 1. The fixing pin and adjusting screw need to be installed first. Since both the fixing pin and adjusting screw are placed inside the adjusting cavity, the adjusting screw needs to be accurately aligned before the fixing pin can be installed. This installation method requires high precision, a long installation time, and a cumbersome process.

[0005] 2. After installing the adjusting screw, you need to connect the mold sleeve to the adjusting screw. Since the mold sleeve is threadedly connected to the outside of the adjusting screw, and the outer diameter of the mold sleeve is almost the same as the inner diameter of the adjusting cavity, the mold sleeve will not be installed if the adjusting screw deviates a little. Summary of the invention

[0006] The purpose of this technical solution is to provide a punch rod assembly and an upper mold mechanism of a button sewing machine. By setting an adjustment seat that cooperates with its thread in the installation cavity of the mobile punch rod, the fixed position of the upper mold can be directly adjusted by rotating the adjustment seat, thereby solving the problems of complex structure and cumbersome installation process of the original upper mold mechanism.

[0007] The purpose of this technical solution is achieved in this way:

[0008] A punch assembly of a button sewing machine comprises: a movable punch having an installation cavity recessed at its lower end and a threaded cavity provided at the center of the bottom of the installation cavity; an adjustment seat having a threaded column provided at its upper end and a fixed cavity provided at its lower end; and an upper mold, the upper end of which is partially arranged in the fixed cavity; wherein the upper end of the adjustment seat is inserted in the installation cavity, and the threaded column is threadedly connected in the threaded cavity, and the position of the threaded column in the threaded cavity is adjusted by rotating the adjustment seat disposed outside the installation cavity, thereby realizing adjustment of the fixed position of the upper mold.

[0009] Preferably, at least one through hole 1 is formed on the adjustment seat, and a fixing piece is movably arranged in the through hole 1. The fixing piece movably abuts against the side wall of the upper mold to fix the upper mold in the fixed cavity.

[0010] Preferably, at least one through hole 2 is formed on the movable punch rod, and a locking member is movably provided in the through hole 2. The locking member movably abuts against the side wall of the adjustment seat to fix the adjustment seat in the installation cavity.

[0011] Preferably, the fixing piece is threadably matched with the through hole.

[0012] Preferably, the locking piece cooperates with two threads of the through hole.

[0013] Preferably, a first clamping part is protrudingly provided on the peripheral side of the lower end of the adjustment seat, and the first clamping part movably abuts against the lower end surface of the movable punch rod; a second clamping part is protrudingly provided on the peripheral side of the lower end of the upper mold, and the second clamping part abuts against the lower end surface of the adjustment seat.

[0014] The utility model discloses an upper die mechanism of a button sewing machine, comprising: a mounting seat, which has a mounting position therein; a punch assembly, which is movably arranged in the mounting position through a shaft sleeve; and a reset assembly, which is sleeved outside the punch assembly.

[0015] Preferably, the reset assembly includes: a spring pressure plate, which is arranged on the upper end of the movable punch rod through a pressure plate screw; and a reset spring, which is sleeved outside the movable punch rod, and the upper and lower ends respectively abut the spring pressure plate and the mounting groove opened on the mounting seat.

[0016] Preferably, a step is protrudingly provided on the peripheral side of the lower end of the movable punch rod, and a buffer ring is provided on the outer sleeve of the movable punch rod, and the buffer ring is placed on the step.

[0017] Preferably, a long slot is formed on the movable punch rod, and a limiting member is provided on the mounting seat; when the punch rod assembly is arranged in the mounting seat, the front end of the limiting member is movably placed in the long slot.

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

[0019] 1. The adjustment seat designed in this technical solution is movably arranged in the installation cavity opened at the lower end of the movable punch rod through a thread, and the upper mold is fixedly arranged in the fixed cavity opened at the lower end of the adjustment seat. The fixed position of the upper mold can be changed by rotating the adjustment seat. This punch rod assembly is simple and has fewer parts, and is easy and quick to install. The adjustment method is also relatively simple and fast, and at the same time, the concentricity between the movable punch rod, the adjustment seat and the upper mold can be guaranteed.

[0020] 2. The locking piece designed in this technical solution can fix the adjustment seat in the installation cavity, and the fixing piece can fix the upper mold in the fixing cavity. When the position of the adjustment seat and the upper mold needs to be adjusted, it is only necessary to loosen the locking piece and the fixing piece and then tighten them. This fixing method can ensure the stability of the upper mold during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the punch assembly.

[0022] Figure 2 It is a structural schematic diagram of the upper mold mechanism.

[0023] Figure 3 This is an exploded view of the upper mold mechanism.

[0024] Figure 4 It is a cross-sectional view of the upper mold mechanism.

[0025] Figure numerals: 1. movable punch; 2. mounting cavity; 3. threaded cavity; 4. adjusting seat; 5. threaded column; 6. fixed cavity; 7. upper mold; 8. through hole one; 9. fixing piece; 10. through hole two; 11. locking piece; 12. clamping part one; 13. clamping part two; 14. mounting seat; 15. mounting position; 16. bushing; 17. reset assembly; 18. spring pressure plate; 19. pressure plate screw; 20. reset spring; 21. mounting groove; 22. step; 23. buffer ring; 24. long groove; 25. limit piece. DETAILED DESCRIPTION

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

[0027] like Figure 1-4 As shown, a punch assembly of a button sewing machine is a part of an upper die mechanism, and the upper die mechanism has the functions of punching and sewing buttons. The present application improves the structure of the punch assembly, and the punch assembly includes a movable punch 1, an adjusting seat 4 and an upper die 7. The lower end of the movable punch 1 is recessed with an installation cavity 2, and a threaded cavity 3 is opened at the center position of the bottom of the installation cavity 2, so that the central axes of the installation cavity 2 and the threaded cavity 3 coincide, which can ensure that the adjusting seat 4 rotates therein; a threaded column 5 is arranged at the upper end of the adjusting seat 4, and a part of the adjusting seat 4 is placed in the installation cavity 2, and the threaded column 5 is threadedly matched with the threaded cavity 3, and a fixed cavity 6 is opened at the center position of the lower end of the adjusting seat 4; the upper die 7 is detachably arranged in the fixed cavity 6.

[0028] Specifically, the upper end of the adjusting seat 4 is inserted into the mounting cavity 2. When the adjusting seat 4 is installed on the movable punch 1, it is only necessary to rotate the adjusting seat 4 so that the threaded column 5 cooperates with the threaded cavity 3 to complete the installation. After the installation is completed, the position of the threaded column 5 in the threaded cavity 3 is adjusted by rotating the adjusting seat 4 placed outside the mounting cavity 2, thereby realizing the adjustment of the fixed position of the upper mold 7. When processing thinner buttons, in order to accurately install the buttons on the cloth, it is necessary to increase the length of the adjusting seat 4 extending out of the mounting cavity 2 to compensate for the thickness of the buttons, and vice versa. The upper mold 7 is fixedly arranged in the fixed cavity 6 opened at the lower end of the adjusting seat 4. The fixing method can be interference fit, thread fit or fixation of the two by a fixing member 9. The outer diameter of the lower end of the adjusting seat 4 is larger than the outer diameter of the upper end. In this way, the adjusting seat 4 can have the maximum moving distance, and the inner diameter of the fixed cavity 6 can match the outer diameter of the upper mold 7. The extension length of the upper mold 7 can be quickly adjusted by the adjusting seat 4, and the operation is simple, convenient and fast.

[0029] Furthermore, a clamping portion 12 is protrudingly provided on the peripheral side of the lower end of the adjusting seat 4. When the adjusting seat 4 is rotated so that the clamping portion 12 abuts against the lower end surface of the movable punch 1, the upper mold 7 is at its shortest extended length. A clamping portion 2 13 is protrudingly provided on the peripheral side of the lower end of the upper mold 7. The clamping portion 2 13 abuts against the lower end surface of the adjusting seat 4. Since the upper mold 7 will be subjected to the recoil force from the button each time a button is processed, the upper mold 7 can be clamped on the adjusting seat 4 by the clamping portion 2 13 to ensure the stability of the processed button.

[0030] like Figure 1-4 As shown, at least one through hole 8 is radially opened on the adjustment seat 4, and a fixing member 9 is movably arranged in the through hole 8. The fixing member 9 passes through the side wall of the adjustment seat 4 and movably abuts against the side wall of the upper mold 7. The fixing member 9 is threadedly matched with the through hole 8, and when the fixing member 9 abuts against the side wall of the upper mold 7, it can be ensured that the upper mold 7 does not rotate. In this embodiment, the number of through holes 8 and fixing members 9 is set to three, which are evenly arranged on the adjustment seat 4, and the upper mold 7 can be better limited. When the fixing member 9 withdraws from the through hole 8 and leaves the side wall of the upper mold 7, the upper mold 7 can be removed from the fixing cavity 6. The setting of the fixing member 9 realizes the rapid installation and disassembly of the upper mold 7.

[0031] [Modifications]

[0032] An inserting hole for inserting the fixing member 9 is provided on the outer wall of the upper mold 7 . The fixing member 9 can pass through the adjustment seat 4 and be placed in the inserting hole, which can also realize the fixation of the upper mold 7 .

[0033] like Figure 2-4As shown, an upper mold mechanism of a button sewing machine includes a mounting seat 14, a punch assembly and a reset assembly 17. The mounting seat 14 is used to connect the button sewing machine, and an axially through mounting position 15 is opened inside the mounting seat 14. A movable punch 1 is movably placed in the mounting position 15 through a shaft sleeve 16, and can move up and down when driven by an external force. The adjustment seat 4 is arranged in a mounting cavity 2 opened at the lower end of the movable punch 1, and the upper mold 7 is arranged in a fixed cavity 6 opened at the lower end of the adjustment seat 4, so the movable punch 1 can drive the upper mold 7 to work, and the reset assembly 17 can help reset the movable punch 1 after being pressed downward by force.

[0034] like Figure 2-4 As shown, a return spring 20 is provided on the outer sleeve of the movable punch 1, and the return spring 20 is used to assist the movable punch 1 to move upward. In order to connect the return spring 20 and the movable punch 1, a spring pressure plate 18 is arranged on the upper end of the movable punch 1, and the spring pressure plate 18 is fixed to the upper end of the movable punch 1 by a pressure plate screw 19. The upper and lower ends of the return spring 20 abut against the spring pressure plate 18 and the mounting seat 14 respectively. In order to prevent the return spring 20 from moving radially, a mounting groove 21 is opened in the mounting seat 14. After the lower end of the return spring 20 is placed in the mounting groove 21, it can be ensured that the return spring 20 will not move radially during operation.

[0035] Furthermore, in order to prevent the movable punch rod 1 from rotating circumferentially during operation, a long groove 24 is opened on its side wall, and a limit member 25 is set on the mounting seat 14. The limit member 25 passes through the mounting seat 14 and extends into the long groove 24. When the limit member 25 is placed in the long groove 24, the movable punch rod 1 can be effectively prevented from rotating circumferentially.

[0036] Furthermore, a step 22 is protruding around the lower end of the movable punch rod 1, and a buffer ring 23 is provided on the outer sleeve of the movable punch rod 1. The buffer ring 23 can be placed on the step 22 due to its own weight. When the upper mold mechanism is working, the buffer ring 23 can effectively buffer the collision between the movable punch rod 1 and the mounting seat 14, thereby achieving the effect of silencing and buffering, and improving the service life of the upper mold mechanism.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A punch assembly of a button sewing machine, characterized in that: include: A movable punch rod (1) has a mounting cavity (2) recessed at its lower end, and a threaded cavity (3) is provided at the center of the bottom of the mounting cavity (2); An adjustment seat (4) having a threaded column (5) at its upper end and a fixing cavity (6) at its lower end; and An upper mold (7), the upper end portion of which is arranged in the fixing cavity (6); The upper end of the adjustment seat (4) is inserted into the installation cavity (2), and the threaded column (5) is threadedly connected in the threaded cavity (3). The position of the threaded column (5) in the threaded cavity (3) is adjusted by rotating the adjustment seat (4) disposed outside the installation cavity (2), thereby realizing adjustment of the fixed position of the upper mold (7).

2. The punch rod assembly of a button sewing machine according to claim 1, characterized in that: The adjustment seat (4) is provided with at least one through hole (8), a fixing member (9) is movably arranged in the through hole (8), and the fixing member (9) movably abuts against the side wall of the upper mold (7) to fix the upper mold (7) in the fixing cavity (6).

3. The punch rod assembly of a button sewing machine according to claim 2, characterized in that: The movable punch rod (1) is provided with at least one through hole (10), a locking member (11) is movably arranged in the through hole (10), and the locking member (11) movably abuts against the side wall of the adjustment seat (4) to fix the adjustment seat (4) in the installation cavity (2).

4. The punch rod assembly of a button sewing machine according to claim 3, characterized in that: The fixing member (9) is threadably matched with the through hole 1 (8).

5. The punch rod assembly of a button sewing machine according to claim 3, characterized in that: The locking piece (11) is threadably matched with the second through hole (10).

6. A punch assembly for a button sewing machine according to claim 4 or 5, characterized in that: A clamping portion (12) is protrudingly provided on the peripheral side of the lower end of the adjustment seat (4), and the clamping portion (12) is movably abutted against the lower end surface of the movable punch rod (1); A second clamping portion (13) is protrudingly provided on the peripheral side of the lower end of the upper mold (7), and the second clamping portion (13) abuts against the lower end surface of the adjustment seat (4).

7. An upper die mechanism of a button sewing machine, characterized in that: include: A mounting seat (14) having a mounting position (15) therein; A punch assembly of a button sewing machine as claimed in any one of claims 1 to 6, which is movably arranged in the mounting position (15) through a sleeve (16); and A reset assembly (17) is sleeved outside the punch assembly.

8. The upper die mechanism of a button sewing machine according to claim 7, characterized in that: The reset component (17) comprises: a spring pressure plate (18) which is arranged on the upper end of the moving punch (1) via a pressure plate screw (19); and The return spring (20) is sleeved outside the movable punch (1), and the upper and lower ends thereof respectively abut against the spring pressure plate (18) and the mounting grooves (21) provided on the mounting seat (14).

9. The upper die mechanism of a button sewing machine according to claim 8, characterized in that: A step (22) is protrudingly provided on the peripheral side of the lower end of the movable punch rod (1), and a buffer ring (23) is provided on the outer sleeve of the movable punch rod (1), and the buffer ring (23) is placed on the step (22).

10. The upper die mechanism of a button sewing machine according to claim 9, characterized in that: The movable punch rod (1) is provided with a long slot (24), and the mounting seat (14) is provided with a limiting member (25); When the punch assembly is arranged in the mounting seat (14), the front end of the limiting member (25) is movably placed in the long slot (24).

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