A tensioning and conveying device for sewing cloth tape

Abstract

The utility model belongs to the technical field of sewing machines, and particularly relates to a tensioning and conveying device for sewing cloth tape, comprising a base, a controller, a driving motor, an active roller, a clamping roller, a rotating shaft, a connecting rod, a tensioning roller, an elastic tensioning member, an induction switch and a steering roller; the base is provided with a mounting position for being installed on one side of the sewing machine; the driving motor is connected to the controller, the active roller is connected to the main shaft of the driving motor, the clamping roller is connected to the base and forms a clamping conveying channel with the active roller; the steering roller and the rotating shaft are arranged on the base, one end of the connecting rod is connected to the rotating shaft, the tensioning roller is arranged at the other end of the connecting rod, and the tensioning roller is located between the active roller and the steering roller; the elastic tensioning member is connected to the connecting rod for pulling the tensioning roller to tighten the cloth tape; the induction switch is arranged at one end of the rotating shaft and connected to the controller, and is used to sense the angular displacement of the rotating shaft, so that the controller controls the driving motor to rotate. The effect of automatically conveying the cloth tape when the sewing machine is working and stopping conveying the cloth tape when the sewing machine is not working is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of sewing machines, and in particular relates to a tensioning and conveying device for sewing cloth tapes. Background Art

[0002] When a sewing machine sews clothes, the cut clothes are further sewn through cloth tapes. In this process, the operator usually conveys the cloth tapes to the sewing machine through a conveying device. However, since the sewing process does not always require the conveying of cloth strips, it is necessary to manually switch the device to stop conveying from time to time to prevent the cloth strips from piling up on the workbench, which will cause creases on the cloth strips and affect the sewing quality.

[0003] For example, the Chinese patent document with publication number CN212247435U discloses a cloth conveying device for a flat sewing machine, comprising a base, a power control box arranged on the base and adjacent to the flat sewing machine, and a cloth reel arranged on a side of the power control box away from the flat sewing machine, wherein guide columns for conveying cloth are respectively arranged near four end corners on the side of the power control box facing the operating station, a motor is hidden in the power control box near the side of the cloth reel, an active rotating shaft parallel to the guide column is connected to the output shaft of the motor, a sleeve is sleeved on a guide column adjacent to the cloth reel and located on the upper side of the active rotating shaft, connecting arms are respectively integrally connected at both ends of the sleeve, a driven roller for pressing cloth parallel to the active rotating shaft is rotatably arranged between the ends of the two connecting arms, the driven roller is freely seated on the top of the active rotating shaft, a conveying gap for passing cloth is formed between the driven roller and the active rotating shaft, and a conveying switch for controlling the start and stop of the motor is also arranged on the power control box.

[0004] In the technical solution of the above patent document, the cloth strips are fed into the interlock sewing machine through a conveying device when the interlock sewing machine is in working state. However, when the interlock sewing machine stops working, the conveying device will continue to convey the cloth strips and needs to be manually shut down. Otherwise, the cloth strips will continue to be conveyed and piled up on the workbench, resulting in creases on the cloth strips, which affects the sewing quality. Utility Model Content

[0005] The utility model aims to provide a tensioning conveying device for sewing cloth tape, which solves the problem that the existing conveying device can only be opened and closed manually, and the cloth tape will continue to be conveyed before the machine is turned off, resulting in stacking on the workbench.

[0006] To achieve the above-mentioned purpose, the utility model provides a tensioning and conveying device for sewing cloth tape, comprising a base, a controller, a driving motor, an active roller, a clamping roller, a rotating shaft, a connecting rod, a tensioning roller, an elastic tensioning member, an induction switch and a steering roller; the base is provided with a mounting position for being installed on one side of a sewing machine; the driving motor is arranged in the base and connected to the controller, the active roller is connected to the main shaft of the driving motor, the clamping roller is connected to the base, and the clamping roller and the active roller form a clamping and conveying channel for clamping the cloth tape; the steering roller and the The rotating shaft is arranged on the base, one end of the connecting rod is connected to the rotating shaft, the tensioning roller is arranged at the other end of the connecting rod, and the tensioning roller is located between the active roller and the steering roller, so that the cloth belt can be wound around the tensioning roller and the steering roller in sequence after passing through the clamping and conveying channel; the elastic tensioning member is connected to the connecting rod, and is used to pull the tensioning roller to tighten the cloth belt; the induction switch is arranged at one end of the rotating shaft and is connected to the controller, and is used to sense the angular displacement of the rotating shaft, so that the controller controls the rotation of the driving motor.

[0007] Furthermore, the active roller, the clamping roller, the tensioning roller and the steering roller are vertically arranged on the base.

[0008] Furthermore, the induction switch is a Hall induction switch; the first induction element of the Hall induction switch is arranged at one end of the rotating shaft, and the second induction element is arranged in the base.

[0009] Furthermore, the elastic tensioning member is a tension spring, one end of the tension spring is connected to the connecting rod, and the other end is connected to a connecting seat on the base.

[0010] Furthermore, a waist-shaped groove is provided on the connecting seat, and a locking screw passes through the waist-shaped groove to be connected with the base.

[0011] Furthermore, it also includes a mounting shaft, a mounting frame and a spring; the mounting shaft is rotatably connected to the base, one side of the mounting frame is sleeved on the mounting shaft, and the clamping roller is arranged on the other side of the mounting frame; the spring connects the mounting frame and the base, and the spring pushes the clamping roller and the active roller to clamp the cloth belt.

[0012] Furthermore, a limiting rod is provided on one side of the installation shaft and the steering roller for limiting the cloth belt; two limiting sleeves are sleeved on the installation shaft and the steering roller, and the two limiting sleeves form a limiting groove.

[0013] Furthermore, a steering plate is provided on the side of the base closer to the steering roller, and the steering plate is provided with a guide groove; an extension plate is provided at the bottom end of the steering plate, and the extension plate is provided with a through groove, and a locking screw for locking the steering plate passes through the through groove and is connected to the base.

[0014] Furthermore, an installation cavity is provided in the base, and the controller, the drive motor and the induction switch are arranged in the installation cavity.

[0015] Furthermore, a slot is provided on the bottom side of the base, a clamping screw is provided at the bottom end of the slot, and the clamping screw and the top side of the slot form the mounting position.

[0016] The above one or more technical solutions in the sewing tape tensioning and conveying device provided by the embodiment of the utility model have at least the following technical effects:

[0017] The sewing tape tensioning and conveying device is installed on one side of the sewing machine through the mounting position of the base. The tape passes through the clamping conveying channel and is sequentially wound on the tensioning roller and the steering roller, and then automatically conveyed to the sewing machine for sewing. When the sewing machine is working, the tape is pulled by the sewing machine at the end closer to the sewing machine, and the tensioning roller wound with the tape swings under the tension of the tape, causing the connecting rod connected to the tensioning roller to swing as well. Since the other end of the connecting rod is connected to the rotating shaft, the rotating shaft synchronously undergoes angular displacement, and the inductive switch connected to the rotating shaft senses this angular displacement, controls the driving motor to rotate through the controller, and then drives the active roller to rotate, driving the tape to be conveyed from the clamping conveying channel to the tensioning roller. Since the elastic tensioning member is connected to the connecting rod, under the action of the elastic force of the elastic tensioning member and the tension of the tape, the tensioning roller and the connecting rod always maintain a state of swinging back and forth, so that the rotating shaft keeps rotating synchronously, ensuring that the inductive switch senses the angular displacement and controls the driving motor to keep rotating through the controller, so that the active roller keeps rotating to convey the tape. And during the conveying process of the tape, it can ensure that the tape is in a taut state, so that the tape and the sewing machine can cooperate in sewing. When the sewing machine stops working, the tape near one end of the sewing machine is no longer conveyed forward. Under the elastic action of the elastic tensioner, the connecting rod and the tensioning roller return to their original positions and no longer swing, so that the rotating shaft stops rotating and no angular displacement occurs. The induction switch controls the driving motor to stop rotating through the controller, and the active roller stops working, so that the tape stops being conveyed. The tensioning and conveying device for sewing tapes can realize the effect of automatically conveying the tape when the sewing machine is working and stopping conveying the tape when the sewing machine is not working, thereby avoiding the problem of tapes accumulating on the sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A three-dimensional diagram of a tensioning and conveying device for sewing fabric tapes provided in an embodiment of the utility model.

[0020] Figure 2 Another stereoscopic view of the tensioning and conveying device for sewing fabric tape provided in an embodiment of the utility model.

[0021] Figure 3 A cross-sectional view of a tensioning and conveying device for sewing fabric tape provided in an embodiment of the utility model

[0022] In the figure, 100, base, 110, installation cavity, 120, slot, 121, clamping screw, 122, installation position; 200, controller, 210, drive motor, 220, active roller, 230, clamping roller, 231, clamping conveying channel; 300, rotating shaft, 310, connecting rod, 320, tensioning roller, 330, elastic tensioning member, 331, connecting seat, 332, waist groove, 333, locking screw, 340, induction switch, 341, first induction element, 342, second induction element; 400, steering roller, 410, limiting sleeve, 411, limiting groove; 500, mounting shaft, 510, mounting frame, 520, spring; 600, limiting rod; 700, steering plate, 710, guide groove, 720, extension plate, 721, through groove. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0027] In one embodiment of the present invention, the tensioning and conveying device for sewing cloth tapes can be referred to as Figure 1 to Figure 3 The tensioning and conveying device for sewing cloth tape is arranged on the sewing machine and is used for automatically conveying cloth tape. Specifically, it includes a base 100, a controller 200, a driving motor 210, an active roller 220, a clamping roller 230, a rotating shaft 300, a connecting rod 310, a tensioning roller 320, an elastic tensioning member 330, an induction switch 340 and a steering roller 400; the base 100 is provided with a mounting position 122 for being installed on one side of the sewing machine; the driving motor 210 is arranged in the base 100 and connected to the controller 200, the active roller 220 is connected to the main shaft of the driving motor 210, the clamping roller 230 is connected to the base 100, and the clamping roller 230 and the active roller 220 form a clamping and conveying channel 231 for clamping the cloth tape; the steering roller 400 The rotating shaft 300 is arranged on the base 100, one end of the connecting rod 310 is connected to the rotating shaft 300, the tensioning roller 320 is arranged at the other end of the connecting rod 310, and the tensioning roller 320 is located between the active roller 220 and the steering roller 400, so that the cloth belt can be wound around the tensioning roller 320 and the steering roller 400 in sequence after passing through the clamping conveying channel 231; the elastic tensioning member 330 is connected to the connecting rod 310, and is used to pull the tensioning roller 320 to tighten the cloth belt; the induction switch 340 is arranged at one end of the rotating shaft 300 and is connected to the controller 200, and is used to sense the angular displacement of the rotating shaft 300, so that the controller 200 controls the driving motor 210 to rotate.

[0028] When the sewing machine is working, the end of the tape closer to the sewing machine is pulled by the sewing machine, and the tensioning roller 320 wound with the tape swings under the tension of the tape, causing the connecting rod 310 connected to the tensioning roller 320 to swing as well. Since the other end of the connecting rod 310 is connected to the rotating shaft 300, the rotating shaft 300 synchronously undergoes angular displacement. The induction switch 340 connected to the rotating shaft 300 senses this angular displacement, controls the driving motor 210 to rotate through the controller 200, and then drives the active roller 220 to rotate, driving the tape to be transported from the clamping conveying channel 231 toward the tensioning roller 320. Since the elastic tensioning member 330 is connected to the connecting rod 310, under the action of the elastic force of the elastic tensioning member 330 and the tension of the cloth tape, the tensioning roller 320 and the connecting rod 310 are kept in a state of swinging back and forth, so that the rotating shaft 300 keeps rotating synchronously, ensuring that the induction switch 340 senses the angular displacement and controls the driving motor 210 to keep rotating through the controller 200, so that the active roller 220 keeps rotating to convey the cloth tape. And in the process of conveying the cloth tape, it can ensure that the cloth tape is in a taut state, which is convenient for the cloth tape to cooperate with the sewing machine for sewing. When the sewing machine stops working, the cloth tape near one end of the sewing machine is no longer conveyed forward. Under the elastic action of the elastic tensioning member 330, the connecting rod 310 and the tensioning roller 320 return to their original positions and no longer swing, so that the rotating shaft 300 stops rotating and no longer angular displacement occurs. The induction switch 340 controls the driving motor 210 to stop rotating through the controller 200, and the active roller 220 stops working, so that the cloth tape stops conveying. The sewing tape tensioning and conveying device can automatically convey the tape when the sewing machine is working, and stop conveying the tape when the sewing machine is not working, thereby avoiding the problem that the tape will be accumulated on the sewing machine.

[0029] Further, the active roller 220, the clamping roller 230, the tensioning roller 320 and the steering roller 400 are vertically arranged on the base 100. Therefore, when the tensioning roller 320 tightens the cloth belt, it will not be affected by the gravity of the cloth belt, and will not affect the inductive sensitivity of the inductive switch.

[0030] Furthermore, the induction switch 340 is a Hall induction switch; the first induction element 341 of the Hall induction switch is disposed at one end of the rotating shaft 300, and the second induction element 342 is disposed in the base 100. Specifically, when the rotating shaft 300 rotates, the first induction element 341 and the second induction element 342 generate angular displacement, and the magnetic field changes, so that the controller 200 connected to the second induction element 324 controls the driving motor 210 to rotate. In addition, when the angular displacement between the first induction element 341 and the second induction element 342 is greater, the operating speed of the driving motor 210 can be controlled to be faster, thereby ensuring that the conveying of the cloth tape can match the speed of sewing.

[0031] Further, the elastic tensioning member 330 is a tension spring, one end of which is connected to the connecting rod 310, and the other end is connected to a connecting seat 331 on the base 100. Specifically, the connecting seat 331 is provided to fix one end of the tension spring on the base 100.

[0032] Furthermore, a waist-shaped groove 332 is provided on the connecting seat 331, and a locking screw 333 passes through the waist-shaped groove 331 to connect with the base 100. Specifically, the waist-shaped groove 332 can adjust the front-back position of the connecting seat 331 and the base 100 through the locking screw 333, thereby adjusting the tension of the elastic tensioning member 330, and the position of the connecting seat 331 can be adjusted according to the sewing speed of the sewing machine to meet different conveying speeds of the cloth tape.

[0033] Furthermore, the sewing tape tensioning and conveying device further includes a mounting shaft 500, a mounting frame 510 and a spring 520. The mounting shaft 500 is rotatably connected to the base 100, one side of the mounting frame 510 is sleeved on the mounting shaft 500, and the clamping roller 230 is arranged on the other side of the mounting frame 510. The spring 520 connects the mounting frame 510 and the base 100, and the spring 520 pushes the clamping roller 230 and the active roller 220 to clamp the tape. Specifically, pulling the mounting frame 510 can pull the distance between the clamping roller 230 and the active roller 220 apart, so as to facilitate the passage of the tape through the clamping and conveying channel 231.

[0034] Furthermore, a limiting rod 600 is provided on one side of the mounting shaft 500 and the steering roller 400 for limiting the cloth belt; two limiting sleeves 410 are sleeved on the mounting shaft 500 and the steering roller 400, and the two limiting sleeves 410 form a limiting groove 411. Specifically, the limiting groove 411 can prevent the cloth belt from moving up and down.

[0035] Furthermore, a steering plate 700 is provided on the side of the base 100 closer to the steering roller 400, and the steering plate 700 is provided with a guide groove 710. An extension plate 720 is provided at the bottom end of the steering plate 700, and the extension plate 720 is provided with a through groove 721. The locking screw for locking the steering plate 700 passes through the through groove 721 and is connected to the base 100. Specifically, the steering plate 700 is provided with a guide groove 710, and the cloth tape can pass through the guide groove 710 and be transported to the sewing machine. The provision of the through groove 721 can adjust the angle of the steering plate 700 toward the sewing machine, adapting to different installation positions of the tensioning and conveying device for sewing cloth tapes, and then the locking screw passes through the through groove 721 and is connected to the base 100 to lock the steering plate 700.

[0036] Further, the base 100 is provided with an installation cavity 110, and the controller 200, the drive motor 210 and the induction switch 340 are arranged in the installation cavity 110. Specifically, the installation cavity 110 can prevent debris and dust, ensure the induction accuracy of the induction switch, and ensure the normal operation of the circuit elements.

[0037] Further, a slot 120 is provided at the bottom side of the base 100, and a clamping screw 121 is provided at the bottom end of the slot 120, and the clamping screw 121 and the top side of the slot 120 form a mounting position 122. Specifically, the slot 120 can be clamped on the edge of the workbench of the sewing machine, and the slot 120 is locked on the workbench by the clamping screw 121.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tensioning and conveying device for sewing cloth tape, arranged on a sewing machine, for automatically conveying cloth tape; characterized in that: The invention comprises a base, a controller, a driving motor, an active roller, a clamping roller, a rotating shaft, a connecting rod, a tensioning roller, an elastic tensioning member, an induction switch and a steering roller; the base is provided with an installation position for being installed on one side of a sewing machine; the driving motor is arranged in the base and connected to the controller, the active roller is connected to the main shaft of the driving motor, the clamping roller is connected to the base, and the clamping roller and the active roller form a clamping conveying channel for clamping the cloth tape; the steering roller and the rotating shaft are arranged on the base, one end of the connecting rod is connected to the rotating shaft, the tensioning roller is arranged at the other end of the connecting rod, and the tensioning roller is located between the active roller and the steering roller, so that the cloth tape can be wound around the tensioning roller and the steering roller in sequence after passing through the clamping conveying channel; the elastic tensioning member is connected to the connecting rod and is used to pull the tensioning roller to tighten the cloth tape; the induction switch is arranged at one end of the rotating shaft and connected to the controller, and is used to sense the angular displacement of the rotating shaft, so that the controller controls the driving motor to rotate.

2. The tensioning and conveying device for sewing fabric tape according to claim 1, characterized in that: The driving roller, the clamping roller, the tensioning roller and the steering roller are vertically arranged on the base.

3. The tensioning and conveying device for sewing fabric tape according to claim 1, characterized in that: The induction switch is a Hall induction switch; the first induction element of the Hall induction switch is arranged at one end of the rotating shaft, and the second induction element is arranged in the base.

4. The tensioning and conveying device for sewing fabric tape according to any one of claims 1 to 3, characterized in that: The elastic tensioning member is a tension spring, one end of which is connected to the connecting rod, and the other end of which is connected to a connecting seat on the base.

5. The tensioning and conveying device for sewing fabric tape according to claim 4, characterized in that: The connecting seat is provided with a waist-shaped groove, and the locking screw passes through the waist-shaped groove and is connected with the base.

6. The tensioning and conveying device for sewing fabric tape according to any one of claims 1 to 3, characterized in that: It also includes a mounting shaft, a mounting frame and a spring; the mounting shaft is rotatably connected to the base, one side of the mounting frame is sleeved on the mounting shaft, and the clamping roller is arranged on the other side of the mounting frame; the spring connects the mounting frame and the base, and the spring pushes the clamping roller and the active roller to clamp the cloth belt.

7. The tensioning and conveying device for sewing fabric tape according to claim 6, characterized in that: A limiting rod is provided on one side of the installation shaft and the steering roller for limiting the cloth belt; two limiting sleeves are sleeved on the installation shaft and the steering roller, and the two limiting sleeves form a limiting groove.

8. The tensioning and conveying device for sewing fabric tape according to any one of claims 1 to 3, characterized in that: A steering plate is also provided on the side of the base closer to the steering roller, and the steering plate is provided with a guide groove; an extension plate is provided at the bottom end of the steering plate, and the extension plate is provided with a through groove, and a locking screw for locking the steering plate passes through the through groove and is connected to the base.

9. The tensioning and conveying device for sewing fabric tape according to any one of claims 1 to 3, characterized in that: An installation cavity is provided in the base, and the controller, the drive motor and the induction switch are arranged in the installation cavity.

10. The tensioning and conveying device for sewing fabric tape according to claim 1, characterized in that: A clamping slot is provided on the bottom side of the base, a clamping screw is provided at the bottom end of the clamping slot, and the clamping screw and the top side of the clamping slot form the installation position.

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