Elastic band opening device

Abstract

The utility model discloses an elastic band opening device which comprises an installation frame used for being erected on a workbench of a sewing machine, a pair of supporting plates installed on the installation frame and supporting rods installed on the two supporting plates. The connecting base is installed on the installation frame in a sliding mode in the sewing direction, and the installation frame is provided with a limiting assembly used for limiting the sliding position of the connecting base. The mounting frame is provided with a mounting assembly used for detachably mounting the mounting frame on a workbench of the sewing machine. The device has the effects of being suitable for machining of products of more specifications and improving the applicability.

Description

Technical Field

[0001] The utility model relates to the field of sewing machinery and equipment, in particular to an elastic band stretching device. Background Art

[0002] At present, elastic bands sewn on the waistband are a common style of many sports pants. They are popular among people because they are loose and automatically adjustable, not tight, and easy to exercise in. When sewing the elastic band on the fabric, it needs to be sewn in a taut state to have elasticity.

[0003] Existingly, the elastic band is sewn onto the fabric using a sewing machine by setting up a frame on the workbench of the sewing machine and near the sewing position of the sewing machine, and then fixing a pair of support rods on the frame, with the two support rods arranged in the sewing direction. When in use, the elastic band is stretched and placed together with the fabric on the two support rods, and then sewing is carried out.

[0004] Regarding the above-mentioned related technologies, since the position between the two support rods is fixed, it is unable to meet the processing requirements of products with different sizes and specifications. Utility Model Content

[0005] In order to adapt to the processing of products with more specifications and improve applicability, the present application provides an elastic band expansion device.

[0006] The present application provides an elastic band expansion device, which adopts the following technical solution:

[0007] An elastic band stretching device includes a mounting frame for being erected on a workbench of a sewing machine, a pair of support plates mounted on the mounting frame, and support rods mounted on the two support plates. A connecting seat is mounted on the bottom of the support plate, and the connecting seat is slidably mounted on the mounting frame in the sewing direction. The mounting frame is equipped with a limiting component for limiting the sliding position of the connecting seat; the mounting frame is equipped with a mounting component for detachably mounting the mounting frame on the workbench of the sewing machine.

[0008] By adopting the above technical solution, when in use, the mounting frame is directly detachably installed on the workbench of the sewing machine and close to the sewing position through the mounting assembly, and then the elastic band and the fabric are put on the two support rods, so that the elastic band is in an expanded state, and then sewing work can be carried out; and when the size of the product changes, the restraint on the connecting seat is first loosened through the limiting assembly, and then the connecting seat is slid, so as to achieve the relative position adjustment of the two support rods, thereby adapting to the processing of products of more specifications and improving applicability.

[0009] Preferably, the limiting assembly includes a limiting bolt and a limiting nut, and the mounting bracket is provided with a sliding hole at the position corresponding to the support plate, and the sliding hole extends in the sewing direction; the connecting seat abuts against the upper side of the mounting bracket; the limiting bolt is passed through the sliding hole and the connecting seat from bottom to top at the same time, and the limiting nut is threadedly installed on the limiting bolt, and the limiting nut abuts against the side of the connecting seat away from the mounting bracket.

[0010] By adopting the above technical solution, when it is necessary to loosen the restraint on the connecting seat, the limiting nut is loosened, so that the connecting seat can be slid. The limiting bolt slides in the sliding hole, and the limiting nut always remains on the limiting bolt, so that the connecting seat can slide stably; the structure is simple and easy to operate.

[0011] Preferably, a pair of the limiting bolts are provided, and the two limiting bolts are arranged in an extending direction of the sliding hole.

[0012] By adopting the above technical solution, the connection seat can be restricted from rotating during the sliding process of the connection seat, thereby restricting the support rod from swinging.

[0013] Preferably, the limiting assembly includes a sliding block, a limiting block and a locking bolt, and the mounting frame is provided with a sliding groove at the position corresponding to the support plate, and the sliding groove extends in the sewing direction; the sliding block is installed on the connecting seat, and the sliding block is slidingly installed in the sliding groove; the groove wall of the sliding groove is provided with a limiting groove, and the limiting block is installed on the sliding block, and the limiting block is slidingly installed in the limiting groove; the locking bolt is threadedly installed on the connecting seat and the sliding block at the same time, and the end thereof abuts against the bottom of the sliding groove.

[0014] By adopting the above technical solution, when it is necessary to loosen the restraint on the connecting seat, the locking bolt is rotated so that the end of the locking bolt leaves the bottom of the sliding groove, so that the sliding block can slide in the sliding groove and reach the sliding connecting seat; and when the adjustment is completed, the locking bolt is rotated again so that the end of the locking bolt is pressed against the bottom of the sliding groove, and the limit block is pressed against the wall of the limit groove, thereby achieving the limitation of the sliding block; the structure is simple and easy to operate.

[0015] Preferably, the support plate is provided with an adjustment hole along the length direction, and a positioning screw is installed at one end of the support rod connected to the support plate. The positioning screw is passed through the adjustment hole, and a positioning nut is threadedly installed on the positioning screw, and the positioning nut abuts against the side of the support plate away from the support rod.

[0016] By adopting the above technical solution, when the height position of the support rod needs to be adjusted according to the product, the positioning nut can be loosened and the positioning screw can slide along the adjustment hole to adjust the position of the support rod; the structure is simple and easy to operate.

[0017] Preferably, the mounting assembly includes a pair of connecting plates, a pair of limiting plates and a pair of locking screws, the two connecting plates are respectively connected to the two ends of the mounting frame, and the connecting plates extend downward from the mounting frame; the two limiting plates are respectively connected to one end of the two connecting plates away from the mounting frame, and the two limiting plates extend in a direction approaching each other; the mounting frame, the connecting plates and the limiting plates form a locking groove for the edge of the worktable of the sewing machine to be clamped into; the two locking screws are respectively threadedly mounted on the two limiting plates, and one end of the locking screw extends into the locking groove.

[0018] By adopting the above technical solution, when in use, the locking grooves formed at both ends of the mounting frame are clamped to the two sides of the sewing direction of the sewing machine's worktable, and then the locking screws are rotated so that the locking screws are pressed against the bottom surface of the sewing machine's worktable, thereby completing the detachable installation of the mounting frame with high installation efficiency.

[0019] Preferably, a pressure plate is installed at one end of the locking screw close to the locking groove, and the cross-sectional area of ​​the pressure plate is larger than the cross-sectional area of ​​the locking screw.

[0020] By adopting the above technical solution, the contact area with the surface of the sewing machine workbench can be increased, thereby protecting the workbench surface.

[0021] Preferably, the support plate located on the side of the workstation close to the sewing machine is tilted upward from one end close to the connecting seat toward the other support plate.

[0022] By adopting the above technical solution, the operator can be given a larger operating space, thereby improving practicality.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When in use, the mounting bracket is directly detachably mounted on the sewing machine's workbench near the sewing position via the mounting assembly. The elastic band and fabric are then placed over the two support rods, keeping the elastic band in an extended state, allowing for sewing. When the size of the product changes, the limiting assembly is first used to release the restraint on the connecting seat, which is then allowed to slide, thereby adjusting the relative position of the two support rods. This allows for the processing of a wider range of product specifications and improves applicability.

[0025] 2. The connecting seat can be slid directly by loosening the limit nut or locking bolt to adjust the relative position between the two support rods. The structure is simple and easy to operate.

[0026] 3. It can provide the operator with a larger operating space and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the overall structure of Example 1 of the present application installed on a sewing machine.

[0028] Figure 2 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0029] Figure 3 This is a cross-sectional view of the overall structure of Example 1 of the present application.

[0030] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0031] Figure 5 This is a cross-sectional view of the overall structure of Example 2 of the present application.

[0032] Description of reference numerals:

[0033] 1. Mounting frame; 11. Sliding hole; 12. Sliding groove; 13. Limiting groove; 2. Support plate; 21. Adjustment hole; 3. Strut; 31. Mounting seat; 32. Positioning screw; 33. Positioning nut; 4. Connecting seat; 5. Limiting assembly; 51. Limiting bolt; 52. Limiting nut; 53. Sliding block; 54. Limiting block; 55. Locking bolt; 6. Mounting assembly; 61. Connecting plate; 62. Limiting plate; 63. Locking screw; 64. Locking groove; 65. Pressure plate. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses an elastic band expansion device.

[0036] Example 1

[0037] Reference Figure 1 and Figure 2 The elastic band stretching device includes a mounting frame 1, a pair of support plates 2 and a pair of support rods 3. The mounting frame 1 extends in the sewing direction. Figure 1The direction of the arrow shown; the mounting frame 1 is detachably mounted on the workbench of the sewing machine through the mounting assembly 6; the two support plates 2 are respectively mounted at the two end positions of the mounting frame 1; a connecting seat 4 is fixedly mounted on the bottom of each support plate 2, and the connecting seat 4 is slidably mounted on the mounting frame 1 in the sewing direction; the support plate 2 located on the side of the work station close to the sewing machine is tilted upward from the end close to the connecting seat 4 toward the other support plate 2; the two support rods 3 are horizontally extended, and the two support rods 3 are rotatably mounted on the ends of the two support plates 2 away from the connecting seat 4; the mounting frame 1 is equipped with a limit assembly 5 for limiting the sliding position of the connecting seat 4, so that the position between the two support rods 3 can be adjusted according to the size of the product.

[0038] Reference Figure 2 and Figure 3 The limiting assembly 5 includes a limiting bolt 51 and a limiting nut 52. A sliding hole 11 is opened at the position of the mounting frame 1 corresponding to the connecting seat 4, and the sliding hole 11 extends in the sewing direction; the connecting seat 4 abuts against the side of the mounting frame 1 away from the workbench; each connecting seat 4 is provided with a pair of limiting bolts 51, and the two limiting bolts 51 are arranged in the extension direction of the sliding hole 11. The limiting bolts 51 are simultaneously penetrated through the sliding hole 11 and the connecting seat 4 from bottom to top, and the bolt head of the limiting bolt 51 abuts against the side of the mounting frame 1 away from the connecting seat 4; the limiting nut 52 is threadedly installed on the limiting bolt 51, and the limiting nut 52 abuts against the side of the connecting seat 4 away from the mounting frame 1, thereby achieving the position limit of the connecting seat 4.

[0039] Reference Figure 2 and Figure 3 A mounting seat 31 is rotatably mounted on one end of the support rod 3; an adjustment hole 21 is opened along the length direction of the support plate 2, and a positioning screw 32 is fixedly mounted on the middle position of the side of the mounting seat 31 away from the support rod 3, and the positioning screw 32 is passed through the adjustment hole 21; a positioning nut 33 is threadedly mounted on the positioning screw 32, and the positioning nut 33 abuts against the side of the support plate 2 away from the support rod 3; thereby, the height of the support rod 3 can be adjusted.

[0040] Reference Figure 1 and Figure 2The mounting assembly 6 includes a pair of connecting plates 61, a pair of limiting plates 62 and a pair of locking screws 63. The two connecting plates 61 are respectively arranged at both ends of the mounting frame 1, one end of the connecting plate 61 is fixedly mounted on the mounting frame 1, and the other end extends vertically downward; the two limiting plates 62 are respectively connected to the ends of the two connecting plates 61 away from the mounting frame 1, and the two limiting plates 62 extend horizontally in the direction of approaching each other; the mounting frame 1, the connecting plate 61 and the limiting plate 62 form a locking groove 64 for the edge of the worktable of the sewing machine to be clamped; the two locking screws 63 are respectively threadedly mounted on the two limiting plates 62, and the locking screw 63 is vertically arranged. One end of the locking screw 63 extends into the locking groove 64 and the other end is fixed with a rotating block. One end of the locking screw 63 located in the locking groove 64 is fixedly mounted with a pressure plate 65, and the cross-sectional area of ​​the pressure plate 65 is larger than the cross-sectional area of ​​the locking screw 63; thereby locking the mounting frame 1 can be achieved.

[0041] The implementation principle of Example 1 is as follows: when in use, the locking grooves 64 formed at both ends of the mounting bracket 1 are clamped to the two sides of the sewing direction of the sewing machine's workbench, and then the locking screw 63 is rotated so that the locking screw 63 is pressed against the bottom surface of the sewing machine's workbench, so that the mounting bracket 1 can be installed on the sewing machine's workbench and close to the sewing position; then the elastic band and the fabric are placed on the two support rods 3 so that the elastic band is in an expanded state, and then sewing work can be carried out; and when the size of the product changes, first loosen the limit nut 52, slide the connecting seat 4 until the support rod 3 is in a suitable position, and then tighten the limit nut 52.

[0042] Example 2

[0043] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the limiting assembly 5 includes a sliding block 53, a limiting block 54 and a locking bolt 55. The mounting frame 1 is provided with a sliding groove 12 at the position corresponding to the connecting seat 4, and the sliding groove 12 extends in the sewing direction; the sliding block 53 is fixedly mounted on the bottom of the connecting seat 4, and the sliding block 53 is slidably mounted in the sliding groove 12; limiting grooves 13 are provided on the opposite side walls of the sliding groove 12; a pair of limiting blocks 54 are provided, and the two limiting blocks 54 are respectively fixedly mounted on both sides of the sliding block 53, and the limiting blocks 54 are slidably mounted in the limiting groove 13; the locking bolt 55 extends in the vertical direction, and the locking bolt 55 is threadedly mounted on the connecting seat 4 and the sliding block 53 at the same time, and the bottom end abuts against the bottom of the sliding groove 12; thereby, the position limit of the connecting seat 4 can be achieved.

[0044] The implementation principle of Example 2 is: when the size of the product changes, first loosen the locking bolt 55, slide the connecting seat 4 until the support rod 3 is in a suitable position, and then tighten the locking bolt 55.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An elastic band stretching device, comprising a mounting frame (1) for mounting on a workbench of a sewing machine, a pair of support plates (2) mounted on the mounting frame (1), and a support rod (3) mounted on the two support plates (2), characterized in that: A connecting seat (4) is installed at the bottom of the support plate (2); the connecting seat (4) is slidably mounted on the mounting frame (1) in the sewing direction; the mounting frame (1) is installed with a limiting component (5) for limiting the sliding position of the connecting seat (4); and the mounting frame (1) is installed with a mounting component (6) for detachably mounting the mounting frame (1) on a workbench of a sewing machine.

2. An elastic band stretching device according to claim 1, characterized in that: The limiting assembly (5) comprises a limiting bolt (51) and a limiting nut (52); a sliding hole (11) is provided at a position of the mounting frame (1) corresponding to the support plate (2); the sliding hole (11) extends in the sewing direction; the connecting seat (4) abuts against the upper side of the mounting frame (1); the limiting bolt (51) is simultaneously passed through the sliding hole (11) and the connecting seat (4) from bottom to top; the limiting nut (52) is threadedly mounted on the limiting bolt (51), and the limiting nut (52) abuts against the side of the connecting seat (4) away from the mounting frame (1).

3. The elastic band stretching device according to claim 2, characterized in that: A pair of the limiting bolts (51) are provided, and the two limiting bolts (51) are arranged in an array in the extending direction of the sliding hole (11).

4. The elastic band expansion device according to claim 1, characterized in that: The limiting assembly (5) comprises a sliding block (53), a limiting block (54) and a locking bolt (55); a sliding groove (12) is provided at a position of the mounting frame (1) corresponding to the support plate (2); the sliding block (53) is installed on the connecting seat (4); the sliding block (53) is slidingly installed in the sliding groove (12); a limiting groove (13) is provided on the groove wall of the sliding groove (12); the limiting block (54) is installed on the sliding block (53); the limiting block (54) is slidingly installed in the limiting groove (13); the locking bolt (55) is simultaneously threadedly installed on the connecting seat (4) and the sliding block (53), and its end portion abuts against the groove bottom of the sliding groove (12).

5. The elastic band stretching device according to claim 1, characterized in that: The support plate (2) is provided with an adjustment hole (21) along the length direction, and a positioning screw (32) is installed at one end of the support rod (3) connected to the support plate (2), and the positioning screw (32) is passed through the adjustment hole (21). A positioning nut (33) is threadedly installed on the positioning screw (32), and the positioning nut (33) abuts against the side of the support plate (2) away from the support rod (3).

6. The elastic band stretching device according to claim 1, characterized in that: The mounting assembly (6) comprises a pair of connecting plates (61), a pair of limiting plates (62) and a pair of locking screws (63), wherein the two connecting plates (61) are respectively connected to the two ends of the mounting frame (1), and the connecting plates (61) extend downward from the mounting frame (1); the two limiting plates (62) are respectively connected to one end of the two connecting plates (61) away from the mounting frame (1), and the two limiting plates (62) extend in a direction approaching each other; the mounting frame (1), the connecting plates (61) and the limiting plates (62) form a locking groove (64) for the edge of the worktable of the sewing machine to be clamped; the two locking screws (63) are respectively threadedly mounted on the two limiting plates (62), and one end of the locking screw (63) extends into the locking groove (64).

7. The elastic band expansion device according to claim 6, characterized in that: A pressure plate (65) is installed at one end of the locking screw (63) close to the locking groove (64), and the cross-sectional area of ​​the pressure plate (65) is larger than the cross-sectional area of ​​the locking screw (63).

8. The elastic band stretching device according to claim 1, characterized in that: The support plate (2) located on the side of the workstation close to the sewing machine is tilted upward from one end close to the connecting seat (4) toward the other support plate (2).

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