Cloth tensioning mechanism

Abstract

The utility model relates to the technical field of cloth processing, in particular to a cloth tensioning mechanism which comprises two fixed plates, transversely-arranged guide rails are arranged on the fixed plates, movable frames are arranged on the guide rails in a sliding mode, a first tensioning wheel is installed between the two movable frames, a first push rod is connected to the right ends of the movable frames, and a first rack is arranged on the upper surface of the first push rod. A vertically-arranged second push rod is arranged on the front side of the first push rod, a second tensioning wheel is installed at the lower end of the second push rod, a second rack is arranged on the left side face of the second push rod, a servo gear motor is arranged on the rear side of the first push rod, and the output end of the servo gear motor is connected with a first gear and a second gear. The first gear and the second gear are engaged with the first rack and the second rack correspondingly. When the servo gear motor drives the second tensioning wheel to move downwards, the servo gear motor can drive the first tensioning wheel to move leftwards at the same time, so that the tensioning effect of the first tensioning wheel and the second tensioning wheel can be achieved at the same time, and the tensioning amount is larger.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth processing, in particular to a cloth tensioning mechanism. Background Art

[0002] Processing fabric into clothing and other products requires multiple steps. When the fabric is laid flat and transported, a tensioning mechanism is used to tension the fabric to keep it flat and wrinkle-free.

[0003] The utility model patent with announcement number CN217732161U discloses a cloth winding device with a tensioning assembly, which includes a bracket, a guide roller and a reel are provided on the inner top of the bracket, a support frame is provided in the middle of the bracket, sleeves are provided on both sides of the bottom surface of the support frame, and the bottom end of the sleeve is connected to a tensioning roller through a telescopic head. The telescopic head can move up and down and make the tensioning roller rest on the cloth, thereby facilitating the tensioning of the cloth. However, the tensioning method of a single tensioning roller is relatively single and the tensioning amount is also limited. Utility Model Content

[0004] The purpose of the utility model is to provide a cloth tensioning mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cloth tensioning mechanism, comprising two fixed plates symmetrically arranged along the front and back, the fixed plates are provided with guide rails arranged laterally, a movable frame is slidably matched on the guide rails, a first tensioning wheel is installed between the two movable frames, a spring is squeezed between the left end of the movable frame and the fixed plate, a first push rod is connected to the right end of the movable frame, a first rack is fixedly provided on the upper surface of the first push rod, a vertically arranged second push rod is provided on the front side of the first push rod, a second tensioning wheel is installed on the lower end of the second push rod, a second rack is fixedly provided on the left side of the second push rod, a servo reduction motor is provided on the rear side of the first push rod, a first gear and a second gear are connected to the output end of the servo reduction motor, and the first gear and the second gear are respectively meshed with the first rack and the second rack;

[0006] The output end of the servo reduction motor is connected to a driving shaft, a sliding sleeve is provided on the driving shaft, the sleeve rotates circumferentially and slides axially, a V-shaped groove is provided on the end face of the sleeve, a driving rod for pushing the inclined surface of the V-shaped groove is connected to the outer wall of the driving shaft, the sleeve is connected to a connecting rod, and the first gear and the second gear are sleeved on the connecting rod.

[0007] Optionally, a guide rod is connected to the left end of the movable frame, the guide rod passes through the fixed plate, and the spring is sleeved on the guide rod.

[0008] Optionally, the shaft sleeve is provided with an axial hole for the driving shaft to slide, the end of the driving shaft is fixedly provided with a first magnetic sheet, the inner bottom of the shaft hole is fixedly provided with a second magnetic sheet, and the first magnetic sheet is magnetically attracted to the second magnetic sheet.

[0009] Optionally, a guide roller arranged side by side up and down is provided on the right side of the second tensioning wheel, and the cloth passes through the second tensioning wheel and then passes between the two guide rollers.

[0010] Optionally, the width of the first rack is not less than the sum of the width of the first gear and the depth of the V-groove; the width of the second rack is not less than the sum of the width of the second gear and the depth of the V-groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model is provided with a first tensioning wheel, a first push rod, a first rack, a second tensioning wheel, a second push rod, a second rack and a servo reduction motor. When the servo reduction motor drives the second tensioning wheel to move downward, it can simultaneously drive the first tensioning wheel to move leftward, so that the tensioning effect of the first tensioning wheel and the second tensioning wheel can be achieved at the same time, and the tensioning amount is greater;

[0013] 2. The utility model provides a driving shaft with a driving rod and a sleeve with a V-groove. When the load torque of the servo reduction motor is too large during the tensioning process, the sleeve will slide axially and detach from the driving shaft, thereby avoiding the risk of damage to the servo reduction motor caused by excessive load torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the drive shaft and the sleeve in the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0017] In the figure: 1. fixed plate; 101. guide rail; 2. movable frame; 201. guide rod; 202. first push rod; 203. first rack; 204. spring; 3. first tensioning wheel; 4. second tensioning wheel; 401. second push rod; 402. second rack; 5. servo reduction motor; 501. second gear; 502. first gear; 503. drive shaft; 5031. drive rod; 5032. first magnetic sheet; 504. bushing; 5041. shaft hole; 5042. V-groove; 5043. second magnetic sheet; 505. connecting rod; 6. guide roller. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: See Figure 1-3 As shown, the utility model provides a cloth tensioning mechanism, including two fixed plates 1 symmetrically arranged along the front and back, the fixed plates 1 are provided with a transversely arranged guide rail 101, a movable frame 2 is slidably fitted on the guide rail 101, a first tensioning wheel 3 is installed between the two movable frames 2, the left end of the movable frame 2 is connected to a guide rod 201, the guide rod 201 is arranged through the fixed plate 1, and a spring 204 sleeved on the guide rod 201 is squeezed between the left end of the movable frame 2 and the fixed plate 1. The right end of the movable frame 2 is connected to the first push rod 202, the upper surface of the first push rod 202 is fixed with a first rack 203, the front side of the first push rod 202 is provided with a vertically arranged second push rod 401, the lower end of the second push rod 401 is installed with a second tensioning wheel 4, the left side of the second push rod 401 is fixed with a second rack 402, the rear side of the first push rod 202 is provided with a servo reduction motor 5, the output end of the servo reduction motor 5 is connected with a first gear 502 and a second gear 501, the first gear 502 and the second gear 501 are respectively meshed with the first rack 203 and the second rack 402. The right side of the second tensioning wheel 4 is provided with a guide roller 6 arranged side by side, and the cloth passes through the second tensioning wheel 4 and then passes between the two guide rollers 6. When the servo reduction motor 5 drives the first gear 502 and the second gear 501 to rotate clockwise, the first gear 502 drives the first rack 203 to move to the left, and the second gear 501 drives the second rack 402 to move downward, and then the first tensioning wheel 3 and the second tensioning wheel 4 move to the left and downward respectively. Therefore, a single motor can control the two tensioning wheels at the same time to achieve tensioning effect, and the tensioning amount is larger.

[0020] On the basis of the above embodiment, the output end of the servo reduction motor 5 is connected to the driving shaft 503, the driving shaft 503 is provided with a sleeve 504, the sleeve 504 is provided with an axial hole 5041 for the driving shaft 503 to slide, the sleeve 504 rotates circumferentially and slides axially, the end surface of the sleeve 504 is provided with a V-shaped groove 5042, the outer wall of the driving shaft 503 is connected to a driving rod 5031 for pushing the inclined surface of the V-shaped groove 5042, the sleeve 504 is connected to a connecting rod 505, and the connecting rod 505 is sleeved with a first gear 502 and a second gear 501. When the servo reduction motor 5 is driven, the driving rod 5031 pushes the inclined surface of the V-shaped groove 5042 to drive the sleeve 504 to rotate. When the tension increases, the load torque of the servo reduction motor 5 will increase. When the load torque increases to too large, the sleeve 504 will slide axially and detach from the driving shaft 503, which can avoid the risk of damage to the servo reduction motor 5 caused by excessive load torque. Furthermore, a first magnetic sheet 5032 is fixedly provided at the end of the driving shaft 503, and a second magnetic sheet 5043 is fixedly provided at the inner bottom of the shaft hole 5041, and the first magnetic sheet 5032 and the second magnetic sheet 5043 are magnetically attracted to each other. The magnetic sheet can ensure the stability of the axial connection between the sleeve 504 and the driving shaft 503, thereby ensuring the stability during transmission, and at the same time, after the sleeve 504 is separated from the driving shaft 503, the magnetic attraction effect facilitates the quick reset of the sleeve 504.

[0021] On the basis of the above embodiment, the width of the first rack 203 is not less than the sum of the width of the first gear 502 and the depth of the V-shaped groove 5042. The width of the second rack 402 is not less than the sum of the width of the second gear 501 and the depth of the V-shaped groove 5042. According to this arrangement, when the sleeve 504 slides axially and disengages from the drive shaft 503, it can also ensure that the first gear 502 / the second gear 501 is always meshed with the first rack 203 / the second rack 402, thereby improving the stability of the meshing of the gear and rack.

[0022] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cloth tensioning mechanism, characterized in that: The invention comprises two fixed plates (1) symmetrically arranged in the front and rear direction, the fixed plates (1) are provided with a transversely arranged guide rail (101), a movable frame (2) is slidably matched on the guide rail (101), a first tensioning wheel (3) is installed between the two movable frames (2), a spring (204) is squeezed between the left end of the movable frame (2) and the fixed plate (1), a first push rod (202) is connected to the right end of the movable frame (2), a first rack (203) is fixedly provided on the upper surface of the first push rod (202), and the first push rod (202) is provided with a first gear. A second push rod (401) arranged vertically is provided on the front side, a second tensioning wheel (4) is installed at the lower end of the second push rod (401), a second rack (402) is fixedly provided on the left side of the second push rod (401), a servo reduction motor (5) is provided on the rear side of the first push rod (202), the output end of the servo reduction motor (5) is connected to a first gear (502) and a second gear (501), and the first gear (502) and the second gear (501) are respectively meshed with the first rack (203) and the second rack (402); The output end of the servo reduction motor (5) is connected to a driving shaft (503), a sleeve (504) is provided on the sliding sleeve of the driving shaft (503), the sleeve (504) rotates circumferentially and slides axially, a V-shaped groove (5042) is provided on the end surface of the sleeve (504), the outer wall of the driving shaft (503) is connected to a driving rod (5031) that pushes the inclined surface of the V-shaped groove (5042), the sleeve (504) is connected to a connecting rod (505), and the first gear (502) and the second gear (501) are sleeved on the connecting rod (505).

2. A cloth tensioning mechanism according to claim 1, characterized in that: The left end of the movable frame (2) is connected to a guide rod (201), the guide rod (201) is arranged to penetrate the fixed plate (1), and the spring (204) is sleeved on the guide rod (201).

3. A cloth tensioning mechanism according to claim 1, characterized in that: The shaft sleeve (504) is provided with a shaft hole (5041) for the driving shaft (503) to slide, a first magnetic attraction sheet (5032) is fixedly provided at the end of the driving shaft (503), a second magnetic attraction sheet (5043) is fixedly provided at the inner bottom of the shaft hole (5041), and the first magnetic attraction sheet (5032) and the second magnetic attraction sheet (5043) are magnetically attracted to each other.

4. A cloth tensioning mechanism according to claim 1, characterized in that: The right side of the second tensioning wheel (4) is provided with guide rollers (6) arranged side by side up and down, and the cloth passes through the second tensioning wheel (4) and then passes between the two guide rollers (6).

5. The cloth tensioning mechanism according to claim 1, characterized in that: The width of the first rack (203) is not less than the sum of the width of the first gear (502) and the depth of the V-shaped groove (5042); the width of the second rack (402) is not less than the sum of the width of the second gear (501) and the depth of the V-shaped groove (5042).

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