Lower die lifting device of button sewing machine

Abstract

The technical scheme belongs to the technical field of button sewing machines, and particularly relates to a lower die lifting device of a button sewing machine, which comprises a mounting seat, a lower die lifting device, an upper die lifting device and a lower die lifting device, the supporting piece is rotationally arranged on the mounting base, and a ramp which spirally ascends is arranged on the supporting piece; the lower die assembly is vertically arranged on the mounting base in a sliding mode, and the lower end of the lower die assembly movably abuts against the supporting piece; the driving part is arranged on the mounting seat and is used for driving the supporting part to rotate; when the supporting piece rotates, the lower die assembly moves on the ramp, so that the lower die assembly moves up and down on the mounting seat; a first supporting platform is arranged on the supporting piece, located at the tail end of the ramp and used for supporting the lower die assembly. The supporting piece rotates to enable the lower die assembly to move on the spirally-rising ramp, so that lifting of the lower die assembly is achieved, the supporting piece is small in occupied space, simple in structure and convenient to install, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of button sewing machines, and in particular to a lower die lifting device for a button sewing machine. Background Art

[0002] Buttons typically consist of an upper button and a lower button, which are placed on the front and back of the fabric and riveted together using a button sewing machine. When sewing buttons on fabric, holes are usually punched first, and then the upper and lower buttons are riveted together. This requires the button sewing machine's lower die to switch positions to achieve different operations.

[0003] For example, Chinese patent CN202320219851.X discloses a lower die lifting mechanism and a lower die structure of a riveting machine, which includes a lifting member, a moving member, a lifting member, and an elastic reset member. The lifting member is driven to rotate to lift the lifting member through the cooperation between the rolling portion of the moving member and the lifting drive portion.

[0004] This patent still has some shortcomings: it uses the lever principle to lift the lower mold, which can easily cause the lifting rod to bend and deform during long-term button nailing operations, affecting the lifting of the lower mold. At the same time, a larger space is required for the moving parts to move and the lifting parts to rotate, resulting in the lower mold lifting device occupying a larger space. In addition, this patent has a complex structure, is inconvenient to disassemble and assemble, and increases maintenance costs. Summary of the Invention

[0005] The purpose of this technical solution is to provide a lower mold lifting device for a button sewing machine, which rotates the support member to move the lower end of the lower mold assembly on a spiral ramp, thereby lifting the lower mold assembly and improving the problem of complex existing structure and inconvenient assembly and disassembly.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A lower die lifting device for a button sewing machine, comprising:

[0008] A mounting base, which is used to be mounted on a frame of the button sewing machine;

[0009] A support member is rotatably mounted on the mounting seat, and a spirally ascending ramp is provided on the support member;

[0010] a lower die assembly, which is vertically slidably disposed on the mounting seat, and the lower end of the lower die assembly movably abuts against the support member;

[0011] a driving member, which is disposed on the mounting seat and is used to drive the supporting member to rotate;

[0012] When the support member rotates, the lower mold assembly moves on the ramp, thereby achieving the up and down movement of the lower mold assembly on the mounting seat;

[0013] A supporting platform 1 is provided on the supporting member, and the supporting platform 1 is located at the tail end of the ramp, and the supporting platform 1 is used to support the lower mold assembly.

[0014] Preferably, a second supporting platform is provided on the supporting member, and the second supporting platform is located at the head end of the ramp;

[0015] When the lower end of the lower mold assembly abuts against the second supporting platform, the lower mold assembly is in the first working position;

[0016] When the lower end of the lower die assembly abuts against the ramp, the lower die assembly is in the second working position;

[0017] When the lower end of the lower mold assembly abuts against the supporting platform, the lower mold assembly is in the third working position.

[0018] Preferably, a transmission mechanism is provided between the driving member and the supporting member, and the transmission mechanism comprises:

[0019] a transmission pin, which is passed through the middle of the support member;

[0020] A first bevel gear, which is disposed on the transmission pin;

[0021] a second bevel gear mounted on the drive shaft of the driving member, wherein the second bevel gear is meshed with the first bevel gear;

[0022] When the driving member drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, so that the transmission pin drives the supporting member to rotate.

[0023] Preferably, a limited rotation portion is provided at the upper end of the transmission pin, a limited rotation hole corresponding to the limited rotation portion is opened in the middle of the support member, and the limited rotation portion is inserted into the limited rotation hole.

[0024] Preferably, the lower mold assembly comprises:

[0025] Lower die base;

[0026] A lifting rod is slidably arranged on the mounting seat, and the upper end of the lifting rod is connected to the lower end of the lower die seat, and the lower end of the lifting rod is movably abutted against the upper end of the support member.

[0027] Preferably, a guide surface is provided on the lower end edge of the lifting rod for guiding the lifting rod to slide on the ramp.

[0028] Preferably, the elastic member has two ends respectively connected to the lower mold assembly and the mounting seat, so as to make the lower mold assembly have a downward movement trend.

[0029] Preferably, the mounting seat has a mounting cavity, and the mounting cavity has a mounting platform, and the mounting platform divides the mounting cavity into cavity one and cavity two; the support member and the lower mold assembly are installed in cavity one, and the lower end of the support member movably abuts against the upper end of the mounting platform, and a through hole for the transmission pin to pass through is opened on the mounting platform; the transmission mechanism is installed in cavity two.

[0030] Compared with the existing technology, this technical solution has the following outstanding and beneficial technical effects:

[0031] 1. This technical solution enables the lower mold assembly to move on a spiral ramp by rotating the support member, thereby achieving the lifting of the lower mold assembly. The support member occupies a small space, has a simple structure, is easy to install, and reduces maintenance costs. At the same time, the support platform is used to abut against the lower end of the lower mold assembly. When the upper buckle and the lower buckle are riveted to each other, the support member can stably support the lower end of the lower mold assembly, ensuring the bearing capacity of the lower mold assembly and the stability of the button sewing operation of the button sewing machine.

[0032] 2. This technical solution enables the lower mold assembly to be located in three different working positions respectively through the rotation of the support member. When the lower mold assembly abuts the ramp, the lower mold assembly abuts against the lower end face of the lower button conveying device of the button sewing machine. When the lower mold assembly abuts against the second support platform, the lower button moves down with the lower mold assembly and detaches from the lower button conveying device; when the lower mold assembly abuts against the first support platform, the lower mold assembly is used to lift the lower button and rivet it with the upper button. The support member rotates to enable the lower mold assembly to obtain and transport the lower button, thereby facilitating the transportation and riveting of the lower button.

[0033] 3. The elastic part designed in this technical solution enables the lower mold assembly to stably abut against the upper end of the support member, preventing the shaking of the lower mold assembly from causing the lower buckle on the lower mold assembly to shift or fall, ensuring the stability of the lower mold assembly when moving up and down. At the same time, the elastic part plays a role in resetting the lower mold assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of the technical solution.

[0035] Figure 2 This is an exploded diagram of this technical solution.

[0036] Figure 3 This is a schematic diagram of the structure of the transmission pin and support member of this technical solution.

[0037] Figure 4 This is a cross-sectional view of the lifting rod and support member of this technical solution.

[0038] Figure markings: 1. Mounting seat; 2. Support member; 3. Ramp; 4. Lower mold assembly; 5. Driving member; 6. Support platform 1; 7. Transmission mechanism; 8. Transmission pin; 9. Bevel gear 1; 10. Bevel gear 2; 11. Rotation limiter; 12. Rotation limit hole; 13. Lower mold base; 14. Lifting rod; 15. Guide surface; 16. Elastic member; 17. Mounting cavity; 18. Mounting platform; 19. Cavity 1; 20. Cavity 2; 21. Through hole; 22. Support platform 2. DETAILED DESCRIPTION

[0039] The specific implementation of this technical solution is further described in detail below with reference to the accompanying drawings. Figures 1-4 .

[0040] A lower die lifting device for a button sewing machine, comprising:

[0041] A mounting base 1, which is used to be mounted on the frame of the button sewing machine;

[0042] A support member 2 is rotatably mounted on the mounting base 1 and is provided with a spirally ascending ramp 3;

[0043] A lower mold assembly 4 is vertically slidably disposed on the mounting base 1 , and the lower end of the lower mold assembly 4 movably abuts against the support member 2 ;

[0044] a driving member 5 , which is provided on the mounting seat 1 and is used to drive the supporting member 2 to rotate;

[0045] When the support member 2 rotates, the lower die assembly 4 moves on the ramp 3, thereby enabling the lower die assembly 4 to move up and down on the mounting base 1, thereby enabling the lower die assembly 4 to switch its working position on the button sewing machine;

[0046] A supporting platform 6 is provided on the supporting member 2, and the supporting platform 6 is located at the tail end of the ramp 3. The supporting platform 6 is used to support the lower mold assembly 4. When the lower mold assembly 4 cooperates with the upper mold device of the button sewing machine to rivet the upper and lower buttons, the supporting platform 6 movably abuts against the lower end of the lower mold assembly 4, ensuring the bearing capacity of the lower mold assembly 4 and the button sewing effect, while preventing the lower mold assembly 4 from moving up and down on the ramp 3 due to the impact force during riveting.

[0047] The driving member 5 can be a motor or a rotary cylinder or a motor. This technical solution uses a motor drive;

[0048] The support member 2 is provided with a second support platform 22, and the second support platform 22 is located at the head end of the ramp 3;

[0049] When the lower end of the lower die assembly 4 abuts against the second support platform 22, the lower die assembly 4 is in the first working position. The first working position is that the upper end of the lower die assembly 4 is lower than the lower end of the punching seat of the button sewing machine, thereby ensuring that the punching head does not hit the lower die assembly 4 when punching;

[0050] When the lower end of the lower die assembly 4 abuts against the ramp 3, the lower die assembly 4 is in the second working position. The second working position is that the upper end of the lower die assembly 4 is located at the lower end of the lower button clamp feeding device of the button sewing machine, so that the upper end of the lower die assembly 4 can be supported on the lower end of the lower button;

[0051] When the lower end of the lower die assembly 4 abuts against the support platform 1 6, the lower die assembly 4 is in the third working position, which is the position where the lower die assembly 4 cooperates with the lower die device of the button sewing machine to perform riveting operations on the upper and lower buttons;

[0052] The lower die assembly 4 is first located in the second working position to enable the button sewing machine to perform punching operations, and then the support member 2 is driven to rotate by the driving member 5, so that the lower die assembly 4 is first located in the second working position, so that the lower end of the lower buckle is placed on the upper end of the lower die assembly 4, and then the lower die assembly 4 is moved downward, so that the lower buckle is detached from the lower buckle clamp feeding device and enters the lower die assembly 4, and finally the support member 2 enables the lower die assembly 4 to move up to the first working position to perform riveting operations.

[0053] The driving end of the driving member 5 can be directly connected to the support member 2 to drive the support member 2 to rotate, or a transmission mechanism 7 is provided between the driving member 5 and the support member 2, and the transmission mechanism 7 includes:

[0054] A transmission pin 8 is movably provided in the middle of the support member 2;

[0055] A bevel gear 9, which is arranged on the transmission pin 8;

[0056] A second bevel gear 10 is mounted on the drive shaft of the driving member 5, and the second bevel gear 10 is meshed with the first bevel gear 9;

[0057] When the driving member 5 drives the second bevel gear 10 to rotate, the second bevel gear 10 drives the first bevel gear 9 to rotate, so that the transmission pin 8 drives the support member 2 to rotate.

[0058] A limited rotation portion 11 is provided at the upper end of the transmission pin 8, and a limited rotation hole 12 corresponding to the limited rotation portion 11 is opened in the middle of the support member 2. The limited rotation portion 11 is inserted into the limited rotation hole 12. The limited rotation portion 11 and the limited rotation hole 12 are similar to cam structures, which ensures that the transmission pin 8 can drive the support member 2 to rotate synchronously. At the same time, the limited rotation portion 11 is movably inserted into the limited rotation hole 12, so that the support member 2 can move along the axial direction of the transmission pin 8.

[0059] The lower mold assembly 4 includes:

[0060] The lower die base 13 has a die groove at its upper end for placing the lower buckle;

[0061] The lifting rod 14 is slidably provided on the mounting base 1 , and the upper end of the lifting rod 14 is connected to the lower end of the lower die base 13 , and the lower end of the lifting rod 14 is movably abutted against the upper end of the support member 2 .

[0062] A guide surface 15 is provided on the lower end edge of the lifting rod 14 for guiding the lifting rod 14 to slide on the ramp 3 , and the guide surface 15 is an arc-shaped surface.

[0063] The elastic member 16 is a tension spring or a rubber band or a rubber ring or a rubber strip, and its two ends are respectively connected to the lower mold assembly 4 and the mounting base 1, and is used to make the lower mold assembly 4 have a downward movement trend, so that the lower end of the lower mold assembly 4 remains in contact with the upper end surface of the support member 2, thereby ensuring the downward movement and reset of the lower mold assembly 4.

[0064] The mounting seat 1 has a mounting cavity 17, and a mounting platform 18 is provided in the mounting cavity 17. The mounting platform 18 divides the mounting cavity 17 into cavity one 19 and cavity two 20; the support member 2 and the lower mold assembly 4 are installed in the cavity one 19, the lower end of the lower mold assembly 4 is inserted into cavity one 19, and the lower end of the support member 2 movably abuts against the upper end of the mounting platform 18, and the mounting platform 18 is used to support the riveting impact force exerted on the support member 2 and the lower mold assembly 4. A through hole 21 is provided on the mounting platform 18 for the transmission pin 8 to pass through; the transmission mechanism 7 is installed in the cavity two 20, and cavity two 20 prevents the transmission mechanism 7 from being interfered with by the support member 2 and the lower mold assembly 4, thereby ensuring the stability of the transmission.

[0065] The above shows and describes the basic principles and main features of the present technical solution and the advantages of the present technical solution. Those skilled in the art should understand that the present technical solution is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present technical solution. Various changes and improvements may be made to the present technical solution without departing from the spirit and scope of the present technical solution. Such changes and improvements fall within the scope of the present technical solution for which protection is sought. The scope of protection claimed by the present technical solution is defined by the appended claims and their equivalents.

[0066] It should be noted that the structures, proportions, sizes, etc. depicted 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 conditions for the implementation of this technical solution. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the efficacy and purpose that can be achieved by this technical solution, should still fall within the scope of the technical content disclosed by this technical solution. 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 this technical solution. Changes or adjustments in their relative relationships, without substantially changing the technical content, should also be regarded as the scope of the implementation of this technical solution.

[0067] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0068] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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 die lifting device for a button sewing machine, characterized in that: include: A mounting base (1) for mounting on a frame of a button sewing machine; A support member (2) is rotatably mounted on the mounting seat (1), and a spirally ascending ramp (3) is provided on the support member (2); A lower mold assembly (4) is vertically slidably arranged on the mounting seat (1), and the lower end of the lower mold assembly (4) is movably abutted against the support member (2); a driving member (5), which is arranged on the mounting seat (1) and is used to drive the supporting member (2) to rotate; When the support member (2) rotates, the lower mold assembly (4) moves on the ramp (3), thereby enabling the lower mold assembly (4) to move up and down on the mounting seat (1); A supporting platform (6) is provided on the supporting member (2), and the supporting platform (6) is located at the tail end of the ramp (3). The supporting platform (6) is used to support the lower mold assembly (4).

2. The lower die lifting device of a button sewing machine according to claim 1, characterized in that: A second supporting platform (22) is provided on the supporting member (2), and the second supporting platform (22) is located at the head end of the ramp (3); When the lower end of the lower mold assembly (4) abuts against the second supporting platform (22), the lower mold assembly (4) is in the first working position; When the lower end of the lower mold assembly (4) abuts against the ramp (3), the lower mold assembly (4) is in a second working position; When the lower end of the lower mold assembly (4) abuts against the supporting platform 1 (6), the lower mold assembly (4) is in the third working position.

3. The lower die lifting device of a button sewing machine according to claim 1 or 2, characterized in that: A transmission mechanism (7) is provided between the driving member (5) and the supporting member (2), and the transmission mechanism (7) comprises: A transmission pin (8) passing through the middle of the support member (2); A bevel gear (9) is arranged on the transmission pin (8); A second bevel gear (10) is mounted on the drive shaft of the drive member (5), and the second bevel gear (10) is meshed with the first bevel gear (9); When the driving member (5) drives the second bevel gear (10) to rotate, the second bevel gear (10) drives the first bevel gear (9) to rotate, thereby causing the transmission pin (8) to drive the support member (2) to rotate.

4. The lower die lifting device of a button sewing machine according to claim 3, characterized in that: A limited rotation portion (11) is provided at the upper end of the transmission pin (8), a limited rotation hole (12) corresponding to the limited rotation portion (11) is opened in the middle of the support member (2), and the limited rotation portion (11) is inserted into the limited rotation hole (12).

5. The lower die lifting device of a button sewing machine according to claim 1, 2 or 4, characterized in that: The lower mold assembly (4) comprises: Lower die base (13); A lifting rod (14) is slidably arranged on the mounting seat (1), and the upper end of the lifting rod (14) is connected to the lower end of the lower die seat (13), and the lower end of the lifting rod (14) is movably abutted against the upper end of the support member (2).

6. The lower die lifting device of a button sewing machine according to claim 5, characterized in that: The lower end edge of the lifting rod (14) is provided with a guide surface (15) for guiding the lifting rod (14) to slide on the ramp (3).

7. The lower die lifting device of a button sewing machine according to claim 1, 2, 4 or 6, characterized in that: Also includes: The elastic member (16) has two ends respectively connected to the lower die assembly (4) and the mounting seat (1), and is used to make the lower die assembly (4) have a downward movement tendency.

8. The lower die lifting device of a button sewing machine according to claim 3, characterized in that: The mounting seat (1) has a mounting cavity (17), and the mounting cavity (17) has a mounting platform (18), and the mounting platform (18) divides the mounting cavity (17) into cavity one (19) and cavity two (20); the support member (2) and the lower mold assembly (4) are installed in cavity one (19), and the lower end of the support member (2) movably abuts against the upper end of the mounting platform (18), and the mounting platform (18) is provided with a through hole (21) for the transmission pin (8) to pass through; the transmission mechanism (7) is installed in cavity two (20).

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