Silk thread tightness adjusting structure of roller machine

Abstract

The utility model discloses a silk thread tightness adjusting structure of a roller car, which comprises a mounting plate, a plurality of roller thread trappers are mounted on the mounting plate, ejector pins are mounted in the roller thread trappers, the back surfaces of the ejector pins penetrate to the back surface of the mounting plate, an adjusting plate is mounted at one end of the back surface of each ejector pin, and the adjusting plate is mounted on the mounting plate. An adjusting piece is installed on the installation plate, and an extrusion strip is rotationally installed on the back face of the installation plate. The adjusting piece is rotated to drive the extrusion strip to rotate, the extrusion strip rotates to push the whole adjusting plate to linearly move along the elastic piece, the ejector pins are driven to synchronously move, the tightness of the roller yarn trappers is synchronously adjusted, and the tightness of yarns is adjusted. Therefore, the device has the advantages that a plurality of rollers can be synchronously adjusted, one-by-one adjustment is avoided, and the equipment adjusting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of roller loom thread adjustment, in particular to a roller loom thread tension adjustment structure. Background Art

[0002] The roller-type sewing machine utilizes a synchronous upper roller and needle feed, offering strong gradeability and a stable stitch length. It sews leather, canvas, plastic, and other fabrics smoothly and evenly, without wrinkling or deformation. It utilizes ball and needle bearings for excellent lubrication, low friction, low noise, and durability. It is suitable for sewing riding boots, men's and women's boots, athletic shoes, casual shoes, safety shoes, high-end leather footwear, luggage, and sofas.

[0003] The general principle of thread tension adjustment on a roller sewing machine is that after the thread is drawn from the spool, it first passes through a wire guide, which accurately guides the thread between the tension discs. The thread is then subjected to a certain amount of friction between the tension discs, depending on the spacing between the tension discs set by the adjusting nut. This friction determines the initial thread tension. During the sewing process, the thread is continuously consumed and pulled as the roller sewing machine feeds the material and the needle bar moves up and down. If the tension on the thread is less than the friction exerted by the tension discs, the thread will maintain a certain tension. If the tension is greater than the friction, the thread may slip between the tension discs or cause the tension discs to automatically adjust (if equipped with an automatic adjustment device such as a spring), thereby changing the thread tension.

[0004] In actual operation, the operator can adjust the tightness of the silk thread precisely by adjusting the nut and other components according to different sewing requirements, such as the type of fabric (thick cloth, thin cloth, leather, etc.), sewing stitch (flat seam, overlock seam, etc.) and the type of thread (cotton thread, silk thread, chemical fiber thread, etc.) to obtain the ideal sewing effect.

[0005] However, the existing adjustment structure generally only adjusts one roller. When adjusting a roller carriage with multiple rollers, the thread clamps need to be adjusted manually one by one, which will reduce the operating efficiency of the equipment and reduce the operating efficiency. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a wire tension adjustment structure for a roller car to solve the background technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A wire tension adjustment structure for a roller car includes a mounting plate, a plurality of roller clamps are installed on the mounting plate, a thimble is installed inside the roller clamp, the back of the thimble passes through the back of the mounting plate, an adjustment plate is installed at one end of the back of the thimble, an adjustment piece is installed on the mounting plate, an extrusion strip is rotatably installed on the back of the mounting plate, the back of the adjustment piece extends to the back of the mounting plate and is connected and cooperated with the extrusion strip, the outer side of the extrusion strip is extruded and cooperated with the adjustment plate, two elastic pieces are installed on the back of the mounting plate, and the adjustment plate is connected and cooperated with the two elastic pieces.

[0009] As a further description of the above technical solution: the adjusting member includes a rotating disk, a connecting rod, a first bevel gear and a second bevel gear, one side of the rotating disk is fixedly connected to the connecting rod, the other end of the connecting rod passes through the back of the mounting plate and is fixedly connected to the first bevel gear, the top of the second bevel gear is fixedly connected to the bottom end of the extrusion bar, and the outer sides of the first bevel gear and the second bevel gear are meshed.

[0010] As a further description of the above technical solution: two first springs are fixedly connected to the mounting plate, the other end of the first spring is fixedly connected to a slide rod, the other end of the slide rod extends to the front of the mounting plate and is rotatably installed with a ball, and a limiting groove that cooperates with the ball is opened on the side of the rotating disk facing the mounting plate.

[0011] As a further description of the above technical solution: the elastic member includes a guide rod and a second spring, one end of the guide rod is fixedly connected to the back of the mounting plate, the other end of the guide rod passes through the adjustment plate, the second spring is sleeved on the outside of the guide rod, one end of the second spring is fixedly connected to the outside of the guide rod, and the other end of the second spring is fixedly connected to the adjustment plate.

[0012] As a further description of the above technical solution: an expansion groove is opened on the back side of the mounting plate, and the expansion groove corresponds to the extrusion strip.

[0013] As a further description of the above technical solution: a mounting ear plate is fixedly connected to the top of the mounting plate, and a mounting hole is opened on the mounting ear plate.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] This solution uses an adjusting piece to drive the extrusion strip to cooperate with the elastic piece and the adjusting plate to achieve synchronous adjustment of multiple roller clamps, thereby realizing the advantage of the device being able to adjust multiple rollers synchronously, avoiding adjustment one by one, and improving the adjustment efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of the utility model;

[0017] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the middle;

[0019] Figure 4 It is a partial three-dimensional structural diagram of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Mounting plate; 2. Roller clamp; 3. Ejector pin; 4. Adjustment plate; 5. Adjustment member; 51. Rotating disk; 52. Connecting rod; 53. First bevel gear; 54. Second bevel gear; 6. Extrusion strip; 7. Elastic member; 71. Guide rod; 72. Second spring; 8. First spring; 9. Sliding rod; 10. Ball bearing; 11. Limiting groove; 12. Expanding groove; 13. Mounting ear plate; 14. Mounting hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] See also Figures 1 to 4 In the utility model, a wire tension adjustment structure of a roller car includes a mounting plate 1, a plurality of roller clamps 2 are installed on the mounting plate 1, a thimble 3 is installed inside the roller clamp 2, the back of the thimble 3 passes through the back of the mounting plate 1, an adjusting plate 4 is installed at one end of the back of the thimble 3, an adjusting piece 5 is installed on the mounting plate 1, an extrusion strip 6 is rotatably installed on the back of the mounting plate 1, the back of the adjusting piece 5 extends to the back of the mounting plate 1 and is connected and matched with the extrusion strip 6, the outer side of the extrusion strip 6 is extruded and matched with the adjusting plate 4, two elastic pieces 7 are installed on the back of the mounting plate 1, and the adjusting plate 4 is connected and matched with the two elastic pieces 7.

[0024] When the thread is tightened, the adjusting member 5 is rotated to move the extrusion bar 6 and the adjusting member 4 is rotated to move in a straight line along the elastic member 7, thereby driving the multiple pins 3 to move synchronously to adjust the tightness of the multiple roller clamps 2 synchronously, so as to adjust the tightness of the thread. This realizes that the device has the advantage of being able to adjust multiple rollers synchronously, avoiding adjustment one by one, and improving the adjustment efficiency of the equipment. This solves the problem that the prior art generally only adjusts one roller, and when adjusting a roller car with multiple rollers, it is necessary to manually adjust the clamps one by one, which will reduce the running efficiency of the equipment and the problem of reduced operating efficiency.

[0025] See also Figure 3 , wherein: the adjusting member 5 includes a rotating disk 51, a connecting rod 52, a first bevel gear 53 and a second bevel gear 54, one side of the rotating disk 51 is fixedly connected to the connecting rod 52, the other end of the connecting rod 52 passes through the back of the mounting plate 1 and is fixedly connected to the first bevel gear 53, the top of the second bevel gear 54 is fixedly connected to the bottom end of the extrusion bar 6, and the outer sides of the first bevel gear 53 and the second bevel gear 54 are meshed.

[0026] In the present invention, the connecting rod 52 is driven to rotate by the rotating disk 51, thereby driving the first bevel gear 53 to rotate, thereby driving the second bevel gear 54 to rotate, thereby driving the extrusion bar 6 to rotate, so that its side extrusion adjustment plate 4 is moved, and the synchronous adjustment of the rollers is achieved.

[0027] See also Figure 3 , wherein: two first springs 8 are fixedly connected to the mounting plate 1, the other end of the first spring 8 is fixedly connected to a slide rod 9, the other end of the slide rod 9 extends to the front of the mounting plate 1 and is rotatably installed with a ball 10, and a rotating disk 51 is provided with a limiting groove 11 that cooperates with the ball 10 on the side facing the mounting plate 1.

[0028] In the present invention, the first spring 8 pushes the slide rod 9 to make its ball 10 fit into the limiting groove 11, thereby positioning the rotating disk 51. After adjustment, the rotating disk 51 is precisely positioned to achieve stable adjustment positioning and more stable and accurate operation.

[0029] See also Figure 1 , wherein: the elastic member 7 includes a guide rod 71 and a second spring 72, one end of the guide rod 71 is fixedly connected to the back of the mounting plate 1, the other end of the guide rod 71 passes through the adjustment plate 4, the second spring 72 is sleeved on the outside of the guide rod 71, one end of the second spring 72 is fixedly connected to the outside of the guide rod 71, and the other end of the second spring 72 is fixedly connected to the adjustment plate 4.

[0030] In the present invention, the adjusting plate 4 is guided by the guide rod 71 and, under the action of the second spring 72 , the adjusting plate 4 can automatically reset when the extrusion force applied to it is reduced, thereby achieving flexible support for adjustment and reset.

[0031] See also Figure 2 , wherein: an expansion slot 12 is opened on the back of the mounting plate 1, and the expansion slot 12 corresponds to the extrusion strip 6.

[0032] In the present invention, the expanded slot 12 ensures that the extrusion strip 6 will not interfere with the mounting plate 1 when rotating.

[0033] See also Figure 1 and Figure 2 , wherein: a mounting ear plate 13 is fixedly connected to the top of the mounting plate 1, and a mounting hole 14 is opened on the mounting ear plate 13.

[0034] In the present invention, the mounting lugs 13 and the mounting holes 14 cooperate to facilitate the installation and connection of the mounting plate 1 and the roller carriage.

[0035] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A thread tension adjustment structure for a roller car, comprising a mounting plate (1), characterized in that: A plurality of roller clamps (2) are mounted on the mounting plate (1), a thimble (3) is mounted inside the roller clamp (2), the back of the thimble (3) extends through the back of the mounting plate (1), an adjustment plate (4) is mounted on one end of the back of the thimble (3), an adjustment member (5) is mounted on the mounting plate (1), an extrusion strip (6) is rotatably mounted on the back of the mounting plate (1), the back of the adjustment member (5) extends to the back of the mounting plate (1) and is connected and matched with the extrusion strip (6), the outer side of the extrusion strip (6) is extruded and matched with the adjustment plate (4), two elastic members (7) are mounted on the back of the mounting plate (1), and the adjustment plate (4) is connected and matched with the two elastic members (7).

2. The thread tension adjustment structure of a roller locomotive according to claim 1, characterized in that: The adjusting member (5) comprises a rotating disk (51), a connecting rod (52), a first bevel gear (53) and a second bevel gear (54); one side of the rotating disk (51) is fixedly connected to the connecting rod (52); the other end of the connecting rod (52) passes through the back of the mounting plate (1) and is fixedly connected to the first bevel gear (53); the top of the second bevel gear (54) is fixedly connected to the bottom end of the extrusion bar (6); and the outer sides of the first bevel gear (53) and the second bevel gear (54) are meshed.

3. The thread tension adjustment structure of a roller locomotive according to claim 2, characterized in that: Two first springs (8) are fixedly connected to the mounting plate (1), the other end of the first spring (8) is fixedly connected to a slide rod (9), the other end of the slide rod (9) extends to the front of the mounting plate (1) and is rotatably mounted with a ball (10), and a limiting groove (11) is provided on one side of the rotating disk (51) facing the mounting plate (1) to cooperate with the ball (10).

4. The thread tension adjustment structure of a roller locomotive according to claim 1, characterized in that: The elastic member (7) comprises a guide rod (71) and a second spring (72), one end of the guide rod (71) is fixedly connected to the back of the mounting plate (1), the other end of the guide rod (71) passes through the adjustment plate (4), the second spring (72) is sleeved on the outside of the guide rod (71), one end of the second spring (72) is fixedly connected to the outside of the guide rod (71), and the other end of the second spring (72) is fixedly connected to the adjustment plate (4).

5. The thread tension adjustment structure of a roller locomotive according to claim 1, characterized in that: An expansion slot (12) is provided on the back of the mounting plate (1), and the expansion slot (12) corresponds to and cooperates with the extrusion strip (6).

6. The thread tension adjustment structure of a roller locomotive according to claim 1, characterized in that: A mounting lug plate (13) is fixedly connected to the top of the mounting plate (1), and a mounting hole (14) is provided on the mounting lug plate (13).

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