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 intermittent gear is rotationally arranged on the mounting seat, and an idle section and a gear tooth section are arranged on the intermittent gear; the lower die assembly is vertically arranged on the mounting base in a sliding mode, and a first tooth part is arranged on the side wall of the lower die assembly and movably connected with the intermittent gear; the supporting piece is arranged on the mounting base in a sliding mode, a second tooth part is arranged on the supporting piece, and the second tooth part is movably connected with the intermittent gear; the driving source is mounted on the mounting base and used for driving the intermittent gear to rotate; the lower die assembly is jacked up from bottom to top in a lifting mode, the upper table top of the lower die assembly can be kept horizontal in the lifting process and after lifting, and therefore the lower buckle placed on the upper table top of the lower die assembly can be effectively prevented from shifting; the supporting piece is supported at the lower end of the lower die assembly, and it is guaranteed that stress of the lower die assembly is stable during riveting.

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, placed on the front and back of the fabric and riveted together using a button sewing machine. When sewing buttons onto fabric, a button sewing machine typically first punches holes in the fabric before riveting the upper and lower buttons together. This requires the lower die of the button sewing machine to switch positions to achieve different operations.

[0003] In the prior art, an inclined block is generally used to lift the lower die to achieve the switching of the lower die position, but this method also has the following disadvantages: since the inclined block is lifted by one side, it may cause the upper surface of the lower die to be uneven, which may easily cause the lower buckle placed on the upper surface of the lower die to shift, resulting in the position of the lower buckle cannot be accurately aligned with the position of the upper buckle during riveting, making it difficult to ensure the quality of riveting. Summary of the Invention

[0004] The purpose of this technical solution is to provide a lower die lifting device for a button sewing machine, which lifts the lower die assembly from bottom to top, thereby improving the problem that the lower die assembly is easily displaced due to the lifting of the inclined block.

[0005] The purpose of this technical solution is achieved in this way:

[0006] A lower die lifting device for a button sewing machine, comprising:

[0007] A mounting base, which is used to be mounted on a frame of the button sewing machine;

[0008] An intermittent gear is rotatably mounted on the mounting seat and is provided with an idle segment and a gear segment;

[0009] A lower mold assembly is vertically slidably disposed on the mounting seat, and a tooth portion 1 is disposed on a side wall of the lower mold assembly, the tooth portion 1 being movably connected to the intermittent gear;

[0010] a support member slidably disposed on the mounting seat for supporting the lower mold assembly, wherein the support member is provided with a second tooth portion movably connected to the intermittent gear;

[0011] a driving source, mounted on the mounting seat, for driving the intermittent gear to rotate;

[0012] The driving source drives the intermittent gear to rotate, so that the gear tooth segment engages with the first tooth portion for transmission, thereby moving the lower mold assembly from the first working position to the second working position, at which time the second tooth portion is not engaged with the gear tooth segment;

[0013] When the lower mold assembly reaches the second working position, the tooth portion 1 is separated from the gear tooth segment, and at the same time, the tooth portion 2 is engaged with the gear tooth segment to drive the support member forward, so that the upper end of the support member is movable against the lower end of the lower mold assembly.

[0014] Preferably, a support table is provided at the front end of the support member, and the support table is used to movably abut against the lower end of the lower mold assembly.

[0015] Preferably, a guide surface 1 is provided on the upper side of the front end of the support member for guiding the lower mold assembly to movably abut against the support table.

[0016] Preferably, a second guide surface is provided at the lower end of the lower mold assembly for movably abutting against the first guide surface.

[0017] Preferably, an installation cavity is provided in the installation seat, a limiting member is provided in the installation cavity, a sliding groove is provided on the limiting member, the support member is slidably placed in the sliding groove, and the rear side wall of the sliding groove movably abuts against the rear side wall of the support member, which is used to limit the support member from detaching from the installation cavity.

[0018] Preferably, an adjustment hole 1 is provided on the limiting member, and the adjustment hole 1 is connected to the mounting seat via a fixing member 1.

[0019] Preferably, an elastic member is connected to the support member, and an end portion of the elastic member is movably connected to the mounting seat, so that the support member has a tendency to move away from the lower mold assembly.

[0020] Preferably, the driving source includes:

[0021] a driving member, which is arranged on the mounting seat;

[0022] a driving wheel, which is arranged on the output end of the driving member;

[0023] A driven wheel is mounted on the intermittent gear, and the driven wheel and the intermittent gear rotate synchronously;

[0024] A transmission belt movably connects the driving wheel and the driven wheel.

[0025] Preferably, a mounting plate is provided on the mounting seat, the driving member and the driving wheel are mounted on the mounting plate, and a second adjustment hole is opened on the mounting plate, and the second adjustment hole is connected to the mounting seat through a second fixing member.

[0026] Preferably, the lower mold assembly comprises:

[0027] Lower die base;

[0028] A push rod is installed at the lower end of the lower die base, and the side wall of the push rod is provided with the tooth portion 1.

[0029] Compared with the existing technology, this technical solution has the following outstanding and beneficial technical effects:

[0030] 1. The lower die assembly designed in this technical solution is connected to the intermittent gear through the tooth portion thereon, so that the lower die assembly can be lifted up from the bottom, so that the upper table of the lower die assembly can be kept horizontal during and after the lifting process, thereby effectively preventing the lower buckle placed on the upper table of the lower die assembly from shifting, so that the position of the lower buckle can be accurately aligned with the position of the upper buckle during riveting, thereby ensuring the quality of riveting. At the same time, when the lower die assembly is lifted, the intermittent gear drives the support to support the lower end of the lower die assembly, ensuring the stability of the force on the lower die assembly during riveting.

[0031] 2. The driving source designed in this technical solution can drive the angle of rotation of the intermittent gear, thereby adjusting the moving position of the lower mold assembly on the mounting base. When the lower button conveying device of the button sewing machine conveys the lower button to the lower mold assembly, the lower mold assembly first moves downward to make the lower button separate from the lower button conveying device, and then the lower mold assembly moves upward to be riveted with the upper button, which facilitates the transportation and riveting of the lower button.

[0032] 3. The intermittent gears, supports and lower die assembly designed in this technical solution take up little space. Compared with the existing inclined block push, since the inclined block needs to move back and forth to move the lower die assembly upward, space is required for the inclined block to move forward. This design adopts intermittent gear rotation to achieve the lifting of the lower die assembly, reducing the volume of the mounting cavity of the mounting seat, reducing the space occupied by the mounting seat, and facilitating installation on the button sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is one of the structural diagrams of this technical solution.

[0034] Figure 2 This is the second structural diagram of this technical solution.

[0035] Figure 3 This is an exploded diagram of this technical solution.

[0036] Figure markings: 1. Mounting seat; 11. Mounting cavity; 12. Mounting plate; 121. Adjustment hole 2; 2. Intermittent gear; 21. Idle section; 22. Gear tooth section; 3. Lower die assembly; 31. Lower die seat; 32. Push rod; 321. Tooth portion 1; 322. Guide surface 2; 4. Support member; 41. Tooth portion 2; 42. Support table; 43. Guide surface 1; 5. Driving source; 51. Driving member; 52. Driving wheel; 53. Driven wheel; 54. Transmission belt; 6. Limiting member; 61. Sliding groove; 62. Adjustment hole 1; 7. Elastic member. DETAILED DESCRIPTION

[0037] The specific implementation of this technical solution is further described in detail below with reference to the accompanying drawings. Figure 1-Figure 3 .

[0038] A lower die lifting device for a button sewing machine, comprising:

[0039] A mounting base 1, which is used to be mounted on the frame of the button sewing machine;

[0040] An intermittent gear 2 is rotatably mounted on the mounting base 1 and is provided with an idle segment 21 and a gear segment 22;

[0041] The lower die assembly 3 is vertically slidably disposed on the mounting base 1, and a tooth portion 321 is provided on the side wall of the lower die assembly 3, and the tooth portion 321 is movably connected to the intermittent gear 2. The upper end of the lower die assembly 3 is provided with a die groove for placing the buckled workpiece;

[0042] A support member 4 is slidably disposed on the mounting base 1 and is used to support the lower die assembly 3 to ensure the bearing capacity of the lower die assembly 3 when cooperating with the upper die device of the button sewing machine to rivet the upper and lower buttons, and the support member 4 is provided with a second tooth portion 41, which is movably connected to the intermittent gear 2;

[0043] a driving source 5 mounted on the mounting base 1 and configured to drive the intermittent gear 2 to rotate;

[0044] The driving source 5 drives the intermittent gear 2 to rotate, so that the gear segment 22 engages with the first tooth portion 321 for transmission, thereby lifting the lower mold assembly 3 from the first working position to the second working position. At this time, the second tooth portion 41 does not engage with the gear segment 22, and the second tooth portion 41 is placed in the idle segment 21.

[0045] When the lower mold assembly 3 reaches the second working position, the tooth portion 1 321 and the gear tooth segment 22 are separated, and the tooth portion 1 321 is placed in the idle segment 21. At the same time, the tooth portion 2 41 is engaged with the gear tooth segment 22 to drive the support member 4 forward, so that the upper end of the support member 4 is movable against the lower end of the lower mold assembly 3.

[0046] The first working position is when the upper end of the lower die assembly 3 moves to the position of the lower end of the punching seat of the button sewing machine to ensure the punching operation of the riveting machine; the second working position is when the lower die assembly 3 moves up to the position where the upper die device of the button sewing machine rivets the upper and lower buttons on the clothes.

[0047] The lower mold assembly 3 of the present design has a third working position, and the rotation angle of the intermittent gear 2 is controlled by the motor (i.e., the driving source 5). The third working position is that the upper end of the lower mold assembly 3 is just located at the lower end of the lower button clamping claw conveying device of the button sewing machine. When the lower button clamping claw conveying device moves the lower button to the upper end of the lower mold assembly 3, the lower mold assembly 3 moves from the third working position to the first working position, so that the lower button is separated from the lower button clamping claw conveying device under the action of its own gravity, so that the lower button is placed in the lower mold assembly 3, and then the lower button clamping claw conveying device moves backward and away from the top of the lower mold assembly 3. At this time, the lower mold assembly 3 moves up to the second working position to cooperate with the upper mold device to perform riveting operations.

[0048] A support table 42 is provided at the front end of the support member 4 , and the support table 42 is used to movably abut against the lower end of the lower mold assembly 3 , and the support table 42 ensures the supporting force for the lower mold assembly 3 .

[0049] A guide surface 43 is provided on the upper side of the front end of the support member 4 for guiding the lower mold assembly 3 to move against the support table 42 . The guide surface 43 is an arc-shaped surface for moving the support member 4 to the lower end of the lower mold assembly 3 .

[0050] The lower end edge of the lower mold assembly 3 is provided with a guide surface 2 322, and the lower end of the lower mold assembly 3 is an abutment plane, which is used to abut against the support table 42. The guide surface 2 322 is used to movably abut against the guide surface 1 43, thereby ensuring that the support member 4 moves to the lower end of the lower mold assembly 3. At the moment when the tooth portion 1 321 and the gear tooth segment 22 are separated, the front end of the support member 4 is already located below the edge of the lower mold assembly 3. At this time, even after the tooth portion 1 321 and the gear tooth segment 22 are separated, the front end of the support member 4 (guide surface 1 43) will still movably abut against the guide surface 2 322. As the support member 4 moves forward, the support table 42 abuts against the lower end of the lower mold assembly 3.

[0051] An installation cavity 11 is provided in the installation seat 1, and a limiting member 6 is provided in the installation cavity 11. A sliding groove 61 is provided on the limiting member 6. The limiting member 6 is L-shaped, and the limiting member 6 cooperates with the inner wall of the installation cavity 11 to form the sliding groove 61. The support member 4 is slidably placed in the sliding groove 61, and the rear side wall of the sliding groove 61 movably abuts against the rear side wall of the support member 4, which is used to limit the support member 4 from being separated from the installation cavity 11.

[0052] An adjustment hole 62 is provided on the limiting member 6, and the adjusting hole 62 is connected to the mounting seat 1 through a fixing member 1 (screw, bolt or pin). By adjusting the position of the limiting member 6 in the mounting cavity 11, the meshing position of the support member 4 and the intermittent gear 2 is adjusted, ensuring that when the tooth portion 1 321 and the gear tooth segment 22 are separated, the tooth portion 2 41 can mesh with the gear tooth segment 22.

[0053] The support member 4 is connected to an elastic member 7, which is a tension spring or a rubber strip or a rubber ring or a rubber band. The end of the elastic member 7 is movably connected to the mounting seat 1, so that the support member 4 has a tendency to move away from the lower mold assembly 3. The elastic member 7 is used for the rearward movement and reset of the support member 4 to avoid the problem that the support member 4 cannot be reset due to the support member 4 failing to engage with the intermittent gear 2 to move backward, thereby ensuring the accuracy of the reset of the support member 4. At the same time, it avoids the support member 4 from moving in the sliding groove 61 due to the vibration of the machine when the tooth portion 2 41 is not engaged with the gear segment 22.

[0054] The driving source 5 can directly connect the output end of the motor to the intermittent gear 2 to drive the intermittent gear 2 to rotate, or the driving source 5 used in this solution includes:

[0055] The driving member 51 is provided on the mounting base 1. The driving member 51 adopts an electric motor or a driving cylinder or a motor. The present design adopts an electric motor drive, thereby being able to control the intermittent gear 2 to rotate to a plurality of set angles.

[0056] a driving wheel 52 , which is disposed on the output end of the driving member 51 ;

[0057] A driven wheel 53 is mounted on the intermittent gear 2, and the driven wheel 53 and the intermittent gear 2 rotate synchronously;

[0058] The transmission belt 54 movably connects the driving wheel 52 and the driven wheel 53 . The driving wheel 52 and the driven wheel 53 can be connected to the transmission belt 54 by tooth block meshing or belt friction.

[0059] The mounting seat 1 is provided with a mounting plate 12, on which the driving member 51 and the driving wheel 52 are mounted, and a second adjustment hole 121 is opened on the mounting plate 12. The second adjustment hole 121 is connected to the mounting seat 1 through a second fixing member (bolt, screw or pin), and the transmission belt 54 is tightened by adjusting the position of the mounting plate 12.

[0060] The lower mold assembly 3 includes:

[0061] The lower die base 31, the upper end of which is used to place the lower buckle;

[0062] The ejector rod 32 is mounted on the lower end of the lower die base 31 , and the side wall of the ejector rod 32 is provided with the tooth portion 1 321 .

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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; An intermittent gear (2) is rotatably mounted on the mounting seat (1), and the intermittent gear (2) is provided with an idle segment (21) and a gear segment (22); A lower mold assembly (3) is vertically slidably arranged on the mounting seat (1), and a tooth portion (321) is provided on a side wall of the lower mold assembly (3), and the tooth portion (321) is movably connected to the intermittent gear (2); A support member (4) is slidably disposed on the mounting seat (1) and is used to support the lower mold assembly (3), and a second tooth portion (41) is provided on the support member (4), and the second tooth portion (41) is movably connected to the intermittent gear (2); a driving source (5) mounted on the mounting base (1) and configured to drive the intermittent gear (2) to rotate; The driving source (5) drives the intermittent gear (2) to rotate, so that the gear tooth segment (22) and the tooth portion 1 (321) are meshed and transmitted, thereby realizing the movement of the lower mold assembly (3) from the first working position to the second working position, at which time the tooth portion 2 (41) is not meshed with the gear tooth segment (22); When the lower die assembly (3) reaches the second working position, the tooth portion 1 (321) and the gear tooth segment (22) are separated, and at the same time, the tooth portion 2 (41) is meshed with the gear tooth segment (22) to drive the support member (4) forward, so that the upper end of the support member (4) is movably abutted against the lower end of the lower die assembly (3).

2. The lower die lifting device of a button sewing machine according to claim 1, characterized in that: A support table (42) is provided at the front end of the support member (4), and the support table (42) is used for movably abutting against the lower end of the lower mold assembly (3).

3. The lower die lifting device of a button sewing machine according to claim 2, characterized in that: A guide surface (43) is provided on the upper side of the front end of the support member (4) for guiding the lower mold assembly (3) to movably abut against the support table (42).

4. The lower die lifting device of a button sewing machine according to claim 3, characterized in that: The lower end of the lower mold assembly (3) is provided with a second guide surface (322) for movably abutting against the first guide surface (43).

5. A lower die lifting device for a button sewing machine according to any one of claims 1 to 4, characterized in that: The mounting seat (1) is provided with a mounting cavity (11), a limiting member (6) is provided in the mounting cavity (11), a sliding groove (61) is provided on the limiting member (6), the support member (4) is slidably placed in the sliding groove (61), and the rear side wall of the sliding groove (61) movably abuts against the rear side wall of the support member (4) to limit the support member (4) from leaving the mounting cavity (11).

6. The lower die lifting device of a button sewing machine according to claim 5, characterized in that: An adjustment hole (62) is provided on the limiting member (6), and the adjustment hole (62) is connected to the mounting seat (1) via a fixing member (1).

7. The lower die lifting device of a button sewing machine according to claim 5, characterized in that: An elastic member (7) is connected to the support member (4), and an end portion of the elastic member (7) is movably connected to the mounting seat (1) so as to enable the support member (4) to have a tendency to move away from the lower mold assembly (3).

8. A lower die lifting device for a button sewing machine according to claim 1, 2, 3, 4, 6 or 7, characterized in that: The driving source (5) comprises: A driving member (51) is arranged on the mounting seat (1); a driving wheel (52) disposed on the output end of the driving member (51); A driven wheel (53) is mounted on the intermittent gear (2), and the driven wheel (53) and the intermittent gear (2) rotate synchronously; A transmission belt (54) movably connects the driving wheel (52) and the driven wheel (53).

9. The lower die lifting device of a button sewing machine according to claim 8, characterized in that: The mounting seat (1) is provided with a mounting plate (12), the driving member (51) and the driving wheel (52) are mounted on the mounting plate (12), and a second adjustment hole (121) is provided on the mounting plate (12), and the second adjustment hole (121) is connected to the mounting seat (1) via a second fixing member.

10. A lower die lifting device for a button sewing machine according to claim 1, 2, 3, 4, 6, 7 or 9, characterized in that: The lower mold assembly (3) comprises: Lower die base (31); A push rod (32) is installed at the lower end of the lower die base (31), and the side wall of the push rod (32) is provided with the tooth portion 1 (321).

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