Auxiliary brake mechanism of bag sewing machine

Abstract

The utility model provides an auxiliary brake mechanism of a bag-sewing machine, which is characterized in that a driving unit (2) is mounted on the left side of a mounting bracket (1), a bag-sewing machine (3) is mounted on the front side of the mounting bracket, and a brake unit (4) is arranged on the upper side of the mounting bracket; a transmission belt in the driving unit is an annular belt, one end of the transmission belt is connected with a driving wheel at the output shaft end of the motor, and the other end is connected with a belt pulley on the bag sewing machine; a cylinder mounting seat in the brake unit is arranged on the upper side of the mounting bracket, the rod end is connected with the tail of a brake cylinder, and the guide rod end of the brake cylinder is connected with a brake block through a joint; a kidney-shaped hole is formed in the middle of the brake block, the guide block is arranged on the upper side of the mounting support, the annular inner side of the transmission belt and located in the kidney-shaped hole in the middle of the brake block, and the brake plate is arranged on the upper side of the mounting support and the annular outer side of the transmission belt. According to the utility model, the bag sewing machine can be timely braked at the moment of shutdown and thread breaking, so that the enterprise cost is prevented from being increased due to excessive waste of the bag sewing thread, and the enterprise packaging image is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging equipment, and particularly relates to an auxiliary braking mechanism for a sewing machine for bags. Background Art

[0002] In a device for weighing and packaging bulk materials, the main function of a sewing machine for bags is to seal the material packaging bags that have been filled. The conventional method is that a motor drives the sewing machine for bags through a belt. On an automated production line, the thread breaking mechanism of the sewing machine for bags stops the motor from rotating according to the signal of a tangent sensor and simultaneously cuts the thread braid. However, due to inertia, the motor drives the sewing machine for bags to continue working for a short period through the driving wheel and the transmission belt. As a result, a relatively long thread braid will be left on the sewing machine for bags, making the thread braid in front of the bag mouth of the subsequent packaging bags too long. In this way, not only will it cause waste of sewing thread and increase the cost of the enterprise, but also affect the aesthetics of the packaging.

[0003] Therefore, how to promptly brake the sewing machine for bags at the moment of stopping and breaking the thread to avoid waste of sewing thread is a problem that needs to be solved currently. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an auxiliary braking mechanism for a sewing machine for bags, so that the sewing machine for bags can be promptly braked at the moment of stopping and breaking the thread, avoiding excessive waste of sewing thread and increasing the cost of the enterprise, and at the same time further improving the packaging image of the enterprise.

[0005] The purpose of the utility model is realized through the following technical solutions:

[0006] An auxiliary braking mechanism for a sewing machine for bags includes a mounting bracket, a driving unit, a sewing machine for bags, and a braking unit. The driving unit is installed on the left side of the mounting bracket, and the sewing machine for bags is installed on the front side thereof. The braking unit is arranged on the upper side of the mounting bracket;

[0007] The driving unit includes a motor, a driving wheel, and a transmission belt; the output shaft of the motor is installed with the driving wheel, the transmission belt is an annular belt, one end of the transmission belt is connected to the driving wheel on the output shaft end of the motor, and the other end is connected to the belt pulley on the sewing machine for bags;

[0008] The braking unit includes a cylinder mounting seat, a braking cylinder, a brake block, a guide block, and a brake plate; the cylinder mounting seat is arranged on the upper side of the mounting bracket, and its rod end is connected to the tail of the braking cylinder. The guide rod end of the braking cylinder is connected to the brake block through a joint; a waist-shaped hole is arranged in the middle of the brake block, the guide block is arranged on the upper side of the mounting bracket, inside the annular transmission belt and in the waist-shaped hole in the middle of the brake block, and the brake plate is a plate member arranged on the upper side of the mounting bracket and outside the annular transmission belt.

[0009] Furthermore, the mounting bracket is welded by a plurality of steel plates.

[0010] Further, the guide block is a waist-shaped plate member.

[0011] Further, the brake plate is a T-shaped member.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows:

[0013] For the auxiliary braking mechanism of the sewing machine described in the present utility model, by setting the braking unit, the sewing machine can be timely braked at the moment of stopping and breaking the thread, avoiding excessive waste of the sewing thread and increasing the enterprise cost, and at the same time further improving the packaging image of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a three-dimensional view of the auxiliary braking mechanism of the sewing machine described in the embodiment;

[0016] Figure 2 The attached drawing of the auxiliary braking mechanism of the sewing machine described in the embodiment is.

[0017] Among them, 1 - mounting bracket, 2 - driving unit, 201 - motor, 202 - driving wheel, 203 - transmission belt, 3 - sewing machine, 301 - belt pulley, 4 - braking unit, 401 - cylinder mounting seat, 402 - braking cylinder, 403 - brake block, 404 - guide block, 405 - brake plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Embodiment 1

[0019] As Figure 1 , Figure 2 shown, this embodiment provides an auxiliary braking mechanism for a sewing machine, including a mounting bracket 1, a driving unit 2, a sewing machine 3 and a braking unit 4. The mounting bracket 1 is welded by a plurality of steel plates, with a driving unit installed on its left side and a sewing machine installed on its front side. The braking unit is arranged on the upper side of the mounting bracket.

[0020] The driving unit 2 includes a motor 201, a driving wheel 202 and a transmission belt 203; the output shaft of the motor is installed with the driving wheel, the transmission belt is an annular belt, one end of the transmission belt is connected to the driving wheel on the output shaft end of the motor, and the other end is connected to the belt pulley 301 on the sewing machine.

[0021] The sewing machine 3 includes a belt pulley 301, and the belt pulley 301 is installed on the upper part of the sewing machine.

[0022] The brake unit 4 includes a cylinder mounting seat 401, a brake cylinder 402, a brake block 403, a guide block 404 and a brake plate 405; the cylinder mounting seat 401 is arranged on the upper side of the mounting bracket, and its rod end is connected to the tail of the brake cylinder 402, and the guide rod end of the brake cylinder 402 is connected to the brake block 403 through a joint; a waist-shaped hole is arranged in the middle part of the brake block 403, and the guide block is arranged on the upper side of the mounting bracket, inside the annular transmission belt and in the waist-shaped hole in the middle of the brake block, mainly playing a guiding role; the guide block 404 is a waist-shaped plate member and matches the waist-shaped hole in the middle of the brake block (403). The brake plate 405 is a T-shaped plate member and is arranged on the upper side of the mounting bracket and outside the annular transmission belt.

[0023] During operation, when the sewing machine 3 finishes sealing and cutting the thread of a bag of packaging materials, the motor 201 receives an instruction to stop rotating. At this time, the brake cylinder 402 also receives an instruction. The guide rod of the brake cylinder extends to push the brake block 403, and the brake block moves forward under the guidance of the guide block 404. The brake block 403 pushes the transmission belt from the inside of the transmission belt 203 towards the brake plate 405, and the two instantly clamp the transmission belt 203 tightly and immobile. In this way, the inertia when the motor stops cannot be transmitted to the sewing machine, achieving instant stop. When the motor 201 receives an instruction to continue rotating, the brake cylinder 402 also receives an instruction, causing the guide rod to quickly retract and drive the brake block 403 to move backward, and the transmission belt 203 is in a normal working state.

[0024] Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred arrangement, those of ordinary skill in the art should understand that the technical solution of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An auxiliary brake mechanism for a bag sewing machine, characterized in that: It comprises a mounting bracket (1), a drive unit (2), a bag sewing machine (3) and a brake unit (4), wherein the drive unit is mounted on the left side of the mounting bracket, the bag sewing machine is mounted on the front side thereof, and the brake unit is arranged on the upper side of the mounting bracket; The driving unit (2) comprises a motor (201), a driving wheel (202) and a transmission belt (203); the output shaft of the motor is equipped with the driving wheel, the transmission belt is an endless belt, one end of the transmission belt is connected to the driving wheel on the output shaft end of the motor, and the other end is connected to the belt pulley (301) on the bag sewing machine; The brake unit (4) comprises a cylinder mounting seat (401), a brake cylinder (402), a brake block (403), a guide block (404) and a brake plate (405); the cylinder mounting seat is arranged on the upper side of the mounting bracket, and its rod end is connected to the tail of the brake cylinder, and the guide rod end of the brake cylinder is connected to the brake block through a joint; a waist-shaped hole is arranged in the middle part of the brake block, the guide block is arranged on the upper side of the mounting bracket, the inner side of the transmission belt ring and is located in the waist-shaped hole in the middle part of the brake block, and the brake plate is a plate member, which is arranged on the upper side of the mounting bracket and the outer side of the transmission belt ring.

2. The auxiliary brake mechanism of the bag sewing machine according to claim 1, characterized in that: The mounting bracket (1) is formed by welding a plurality of steel plates.

3. The auxiliary brake mechanism of the bag sewing machine according to claim 1, characterized in that: The guide block (404) is a waist-shaped plate, which matches the waist-shaped hole in the middle of the brake block (403).

4. The auxiliary brake mechanism of the bag sewing machine according to claim 1, characterized in that: The brake plate (405) is a T-shaped piece.

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