Tension adjusting device suitable for embroidery reel

Abstract

The utility model discloses a tension adjusting device suitable for an embroidery reel. The tension adjusting device comprises a transverse tightening part and a longitudinal tightening part, the transverse tightening part comprises a pair of rotating rollers arranged in parallel and rotating seats coaxially arranged at the two ends, one ends of the rotating seats are locking ends capable of locking and releasing the rotating rollers, the other ends of the rotating seats are rotating ends, and rotating cranks penetrating through the rotating seats are coaxially arranged at the ends; a fixing mechanism for fixing embroidery cloth is also arranged on the rotating roller; the longitudinal tightening part comprises a pair of connecting shafts which are arranged in parallel, one connecting shaft is connected with the rotating ends of the two rotating seats, the other connecting shaft is connected with the locking ends of the two rotating seats, the connecting shafts are uniformly and coaxially sleeved with a plurality of take-up wheels, tightening threads are wound on the take-up wheels, tightening clamps capable of clamping embroidery cloth are arranged at the other ends of the tightening threads, and the tightening clamps are connected with the locking ends of the two rotating seats. The connecting shaft is further coaxially provided with a take-up reel, and the connecting shaft is further provided with a locking mechanism capable of locking the take-up reel.

Description

Technical Field

[0001] The utility model relates to the field of embroidery, in particular to a tension regulating device suitable for an embroidery stretcher. Background Art

[0002] Embroidery, the craft of creating designs on fabric with needle and thread, is primarily divided into silk thread embroidery and feather embroidery. It involves threading silk and other fiber materials into a designed pattern using a needle, creating decorative patterns. As a traditional Chinese folk craft, embroidery has a history of at least two to three thousand years.

[0003] In the embroidery process, a stretcher is required to fix the embroidery cloth. For example, Chinese patent application number CN202010958186.7 proposes a detachable and adjustable hand embroidery stretcher. The invention discloses a detachable and adjustable hand embroidery stretcher, including a horizontal plate and a fixing bolt. Both ends of the horizontal plate are equipped with a base plate. The upper surface of the base plate is equipped with a support rod. The other end of the support rod is provided with a fixing mechanism. The fixing mechanism is composed of a fixing sleeve, a connecting column, a ball joint, a connecting sleeve and a locking bolt. A connecting column is installed on one side of the outer wall of the fixing sleeve. The other end of the connecting column is movably connected to the connecting sleeve through a ball joint. A slot is provided inside the connecting sleeve. A connecting rod is installed inside the slot. The fixing bolt passes through the threaded holes on the fixing sleeve and the support rod and engages with the fixing sleeve and the support rod. The present invention facilitates the installation and disassembly of the embroidery equipment through a series of structural settings, and at the same time facilitates the adjustment of the embroidery angle and adjusts the tension according to the size of the embroidery cloth, which has good practicality.

[0004] However, the above-mentioned detachable and adjustable hand-embroidery frame has the following problems: the lateral tension can only be adjusted by moving the adjustment plate on the frame. During the movement of the frame, it is difficult to control the tension of the embroidery cloth well. Moreover, the frame of the invention only provides lateral tension to the embroidery cloth, but does not provide longitudinal tension, which easily leads to lateral wrinkles on the cloth. This is because the cloth is usually interwoven with warp and weft yarns, and the elasticity of the warp and weft yarns may not be completely consistent. When the cloth is pulled in a single direction, if the elasticity of the yarn in this direction is poor or the tension is improperly controlled, uneven stretching is easily caused, resulting in contraction or deformation in this direction, thereby forming horizontal wrinkles.

[0005] Therefore, a tension regulating device suitable for an embroidery stretcher is needed to solve the above technical problems. Utility Model Content

[0006] In response to the problems existing in the prior art, the utility model proposes a tension adjustment device suitable for an embroidery stretcher, which can solve the problem that the existing stretcher is not easy to adjust the tension and does not provide longitudinal tension, thereby causing horizontal wrinkles on the embroidery cloth.

[0007] A tension adjustment device suitable for an embroidery stretcher frame, comprising a transverse tensioning portion for tensioning the embroidery cloth transversely and a longitudinal tensioning portion for tensioning the embroidery cloth longitudinally;

[0008] The transverse tensioning portion includes a pair of parallel rotating rollers and a rotating base coaxially arranged at both ends. One end of the rotating base is a locking end capable of locking and releasing the rotating rollers. The other end of the rotating base is called a rotating end. A rotating crank penetrating the rotating base is coaxially arranged at this end. Operating the rotating crank can rotate the rotating rollers. The rotating rollers are also provided with a fixing mechanism for fixing the embroidery cloth.

[0009] The longitudinal tensioning portion includes a pair of parallel connecting shafts, one connecting shaft connecting the opposite side walls of the rotating ends of the two rotating seats, and the other connecting shaft connecting the opposite side walls of the locking ends of the two rotating seats, and the axis of the connecting shaft is perpendicular to the axis of the rotating end and the locking end. A number of take-up wheels are evenly and coaxially sleeved on the connecting shaft, a tensioning line is wound around the take-up wheel, and a tensioning clamp for clamping the embroidery cloth is provided at the other end of the tensioning line. A take-up disk is also coaxially mounted on the connecting shaft, and rotating the take-up disk can make the take-up wheel rotate on the connecting shaft, and a locking mechanism for locking the take-up disk is also provided on the connecting shaft.

[0010] Furthermore, the fixing mechanism includes an arcuate groove opened in the middle of the rotating drum, the axis of the arcuate groove is parallel to the axis of the rotating drum in a direction perpendicular to the connecting axis, an arc panel is provided in the arcuate groove, and a moving block is provided on the concave surface of the arc panel, a threaded hole is opened in the moving block, a bolt passing through the rotating drum is provided in the threaded hole, the axis of the bolt is perpendicular to and intersects with the axis of the rotating drum, and the moving block and the bolt are both arranged in a yield groove opened on the body of the rotating drum, and the bolt is restricted in the yield groove and can only rotate about its axis and cannot move along the groove, and the moving block is restricted by the groove wall of the yield groove and cannot rotate about the bolt axis, so rotating the bolt can make the moving block move in the yield groove along the axis direction of the bolt, thereby driving the arc panel to move, thereby clamping the embroidery cloth.

[0011] Furthermore, an anti-slip layer is provided on the arc panel, and the anti-slip layer has lines parallel to the axis of the rotating drum.

[0012] Furthermore, the locking end includes a first ratchet disc coaxially installed near the locking end of the rotating roller, the ratchet surface of the first ratchet disc protrudes toward the end away from the rotating roller, and the locking end of the rotating seat is coaxially provided with a mounting shaft that passes through the first ratchet disc, and a second ratchet disc that can engage with the first ratchet disc is also sleeved on the mounting shaft, the second ratchet disc can move along the axis on the mounting shaft, and a spring is coaxially arranged between the second ratchet disc and the rotating seat, the spring makes the second ratchet disc press against the first ratchet disc, and a pair of pull rods parallel to the axis are provided at the end of the second ratchet disc away from the first ratchet disc, the pull rods extend from the end face of the rotating seat through the locking end of the rotating seat, and a handle is provided between the pull rods for easy operation, and the handle is pulled to separate the second ratchet disc and the first ratchet disc, so that the rotating roller can rotate freely.

[0013] Furthermore, a plurality of connecting rods are installed between the take-up wheels on the connecting shaft, and a connecting rod is also provided between the take-up wheel close to the take-up drum and the take-up drum. Bearings are provided between the take-up drum and the take-up wheel and the connecting shaft to reduce friction.

[0014] Furthermore, the locking mechanism includes a first ratchet ring coaxially installed on one end of the take-up drum away from the take-up wheel, a second ratchet ring is engaged with the first ratchet ring, the second ratchet ring is coaxially sleeved on the connecting shaft, a transverse block is provided on the inner side wall of the second ratchet ring, a guide groove that enables the transverse block to move along the axis is provided on the connecting shaft, a flange is provided on the connecting shaft on the side of the second ratchet ring away from the first ratchet ring, and a spring is sleeved on the connecting shaft between the flange and the second ratchet ring to force the second ratchet ring to press against the take-up drum.

[0015] Furthermore, a release trigger is provided on the outer side wall of the second ratchet ring. Pulling the release trigger to move away from the take-up drum can move the second ratchet ring along the guide groove away from the first ratchet ring, allowing the take-up drum to rotate freely, thereby releasing the tension line.

[0016] The beneficial effect of the present invention is that, in view of the problem that the existing tensioning frame is not easy to adjust the tension and does not provide longitudinal tension, which causes horizontal wrinkles on the embroidery cloth, the present invention solves the problem of tension adjustment by providing a rotating drum, and also realizes the tension adjustment in the longitudinal direction of the embroidery cloth through the cooperation of the take-up wheel, the take-up disk and the tensioning clamp in the longitudinal tensioning part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side structure of the rotating drum of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the rotating drum of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the connecting shaft locking mechanism of the utility model.

[0021] In the above drawings:

[0022] Locking end 11, rotating end 12, rotating drum 2, rotating crank 21, connecting shaft 3, take-up wheel 31, tensioning line 32, tensioning clamp 321, take-up drum 322, arc surface groove 22, arc panel 23, moving block 24, threaded hole 25, bolt 251, anti-slip layer 26, first ratchet 27, second ratchet 28, mounting shaft 29, spring a291, pull rod 281, handle 282, connecting rod 33, first ratchet ring 34, second ratchet ring 35, transverse block 36, guide groove 361, flange 37, spring b38, release trigger 381. DETAILED DESCRIPTION

[0023] A tension adjustment device suitable for an embroidery stretcher frame, comprising a transverse tensioning portion for tensioning the embroidery cloth transversely and a longitudinal tensioning portion for tensioning the embroidery cloth longitudinally;

[0024] like Figure 3 and Figure 1 As shown, the transverse tensioning portion includes a pair of parallel rotating rollers 2 that can fix one end of the embroidery cloth and a rotating base coaxially arranged at both ends. One end of the rotating base is a locking end 11 that can lock and release the rotating roller 2. The other end of the rotating base is called a rotating end 12. This end is coaxially provided with a rotating crank 21 that passes through the rotating base. The rotating crank 21 can rotate the rotating base. The rotating drum 2 is also provided with a fixing mechanism that can fix the embroidery cloth. The rotating drum 2 can clamp one end of the embroidery cloth and rotate and tighten the embroidery cloth under the cooperation of the fixing mechanism and the rotating base. The embroidery cloth can be tightened by rotating the two rotating drums 2 in opposite directions relative to each other.

[0025] like Figure 3 As shown, the longitudinal tensioning portion includes a pair of parallel connecting shafts 3, the connecting shafts 3 connecting the opposite side walls of the rotating ends 12 of the two rotating seats, and the other connecting shaft 3 connecting the opposite side walls of the locking ends 11 of the two rotating seats, and the axis of the connecting shaft 3 is perpendicular to the axis of the rotating end 12 and the locking end 11, and a number of take-up wheels 31 are evenly and coaxially sleeved on the connecting shaft 3, a tensioning line 32 is wound around the take-up wheel 31, and a tensioning clamp 321 for clamping the embroidery cloth is provided at the other end of the tensioning line 32, and a take-up disk 322 is also coaxially installed on the connecting shaft 3, and rotating the take-up disk 322 can make the take-up wheel 31 rotate on the connecting shaft 3, and a locking mechanism capable of locking the take-up disk 322 is also provided on the connecting shaft 3.

[0026] like Figure 1 and Figure 2As shown, preferably, the fixing mechanism includes an arcuate groove 22 opened in the middle of the rotating drum 2, the axis of the arcuate groove 22 is parallel to the axis of the rotating drum 2 in a direction perpendicular to the connecting shaft 3, an arc panel 23 is provided in the arcuate groove 22, and a moving block 24 is provided on the concave surface of the arc panel 23, a threaded hole 25 is provided in the moving block 24, a bolt 251 passing through the rotating drum 2 is provided in the threaded hole 25, the axis of the bolt 251 is perpendicular to and intersects with the axis of the rotating drum 2, the moving block 24 and the bolt 251 are both provided in the clearance groove opened on the body of the rotating drum 2, and the side walls of the rotating drum 2 on both sides of the top of the bolt 251 are provided with protrusions to limit the bolt 251, so that the bolt 2 51 is restricted in the give way groove and can only rotate about its axis and cannot move along the give way groove. The moving block 24 is a rectangular block screwed on the end of the bolt. The cross-section of the give way groove in the axial direction of the bolt 251 is consistent with that of the moving block 24, but a margin is left for the movement of the rectangular block. The length of the give way groove in the axial direction of the bolt 251 is greater than that of the moving block 24. The moving block 24 is restricted by the groove wall of the give way groove and cannot rotate about the axis of the bolt 251, but the moving block 24 can translate along the axial direction of the bolt 251 in the give way groove. Rotating the bolt 251 can make the moving block 24 move along the axial direction of the bolt 251 in the give way groove, thereby driving the arc panel 23 to translate in the arc surface through groove toward the side away from the bolt, thereby clamping the embroidery cloth.

[0027] like Figure 2 As shown, preferably, an anti-slip layer 26 is provided on the arc panel 23 , and the anti-slip layer 26 has lines parallel to the axis of the rotating drum 2 .

[0028] like Figure 1 As shown, preferably, the locking end 11 includes a first ratchet 27 coaxially mounted near the locking end 11 of the rotating drum 2, the ratchet surface of the first ratchet 27 protrudes toward the end away from the rotating drum 2, and the locking end 11 of the rotating seat is coaxially provided with a mounting shaft 29 that passes through the first ratchet 27, and a second ratchet 28 that can engage with the first ratchet 27 is also sleeved on the mounting shaft 29, and the second ratchet 28 can move along the axis on the mounting shaft 29, and the second ratchet 28 A spring a291 is coaxially arranged between the rotating seat, and the spring a291 makes the second ratchet 28 press against the first ratchet 27, and a pair of pull rods 281 parallel to the axis are provided at one end of the second ratchet 28 away from the first ratchet 27. The pull rods 281 extend out of the end face of the rotating seat through the locking end 11 of the rotating seat, and a handle 282 is provided between the pull rods 281 for easy operation. Pulling the handle 282 separates the second ratchet 28 from the first ratchet 27, so that the rotating drum 2 can rotate freely.

[0029] like Figure 3As shown, preferably, a plurality of connecting rods 33 are installed between the take-up wheels 31 on the connecting shaft 3, and a connecting rod is also provided between the take-up wheel 31 near the take-up drum 322 and the take-up drum 322, and bearings are provided between the take-up drum 322 and the take-up wheel 31 and the connecting shaft 3 to reduce friction.

[0030] like Figure 3 and Figure 4 As shown, preferably, the locking mechanism includes a first ratchet ring 34 coaxially installed on the end of the take-up disk 322 away from the take-up wheel 31, a second ratchet ring 35 is engaged on the first ratchet ring 34, and the second ratchet ring 35 is sleeved on the connecting shaft 3, and a transverse block 36 is provided on the inner wall of the second ratchet ring 35, and a guide groove 361 is provided on the connecting shaft 3 to enable the transverse block 36 to move along the axis, and a flange 37 is provided on the connecting shaft 3 on the side of the second ratchet ring 35 away from the first ratchet ring 34, and a spring b38 is sleeved on the connecting shaft 3 between the flange 37 and the second ratchet ring 35 to make the second ratchet ring 35 press against the take-up disk 322.

[0031] like Figure 4 As shown, preferably, a release trigger 381 is provided on the outer wall of the second ratchet ring 35. Pulling the release trigger 381 to move away from the take-up drum 322 can cause the second ratchet ring 35 to move along the guide groove 361 away from the first ratchet ring 34, so that the take-up drum 322 can rotate freely, thereby releasing the tension line 32.

[0032] The method of using the present invention is as follows: put the two ends of the embroidery cloth into the arc-shaped groove 22 of the pair of rotating drums 2 respectively, rotate the bolt 251, and press the arc panel 23 downward to press the embroidery cloth. After fixing the two ends of the embroidery cloth, the embroidery cloth is still in a relaxed state. Then operate the rotating crank 21 to tighten the embroidery cloth. According to the usage, any one of the rotating cranks 21 at the two ends can be used to make the rotation direction of the pair of rotating drums 2 relatively opposite. After being tightened horizontally, the embroidery cloth is subjected to horizontal tension. At this time, horizontal stripes will appear on the embroidery cloth. This is because the cloth is usually made of warp and weft yarns interwoven, and the elasticity of the warp and weft yarns is relatively opposite. The properties may not be completely consistent. When the fabric is pulled in a single direction, if the yarn in this direction has poor elasticity or the tension is improperly controlled, uneven stretching is likely to occur, resulting in contraction or deformation in this direction, thereby forming horizontal stripes. At this time, it is necessary to clamp the embroidery cloth with the tensioning clamp 321, and then operate the take-up disk 322 to recycle the tensioning thread 32, and adjust the embroidery cloth to a flat state. If you need to remove the embroidery cloth, you only need to pull the release trigger 381 and the handle 282, and then rotate the rotary drum 2 to relax the embroidery cloth, and then release the tensioning clamp 321 and the arc panel 23 to remove the embroidery cloth.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tension adjustment device suitable for an embroidery stretcher, characterized by: It includes a transverse tightening part for tightening the embroidery cloth transversely and a longitudinal tightening part for tightening the embroidery cloth longitudinally; The transverse tensioning portion comprises a pair of parallel rotating rollers (2) and rotating seats coaxially arranged at both ends, one end of the rotating seat is a locking end (11) capable of locking and releasing the rotating roller (2), and the other end of the rotating seat is called a rotating end (12), which is coaxially provided with a rotating crank (21) passing through the rotating seat, and the rotating crank (21) can rotate the rotating roller (2), and the rotating roller (2) is also provided with a fixing mechanism capable of fixing the embroidery cloth; The longitudinal tightening portion comprises a pair of parallel connecting shafts (3), one connecting shaft (3) connecting opposite side walls of the rotating ends (12) of the two rotating seats, and the other connecting shaft (3) connecting opposite side walls of the locking ends (11) of the two rotating seats, and the axis of the connecting shaft (3) is perpendicular to the axis of the rotating end (12) and the locking end (11), and a plurality of take-up wheels (31) are uniformly and coaxially sleeved on the connecting shaft (3), a tensioning line (32) is wound around the take-up wheel (31), and a tensioning clamp (321) capable of clamping the embroidery cloth is provided at the other end of the tensioning line (32), and a take-up disk (322) is also coaxially mounted on the connecting shaft (3), and the take-up disk (322) can be rotated to make the take-up wheel (31) rotate on the connecting shaft (3), and a locking mechanism capable of locking the take-up disk (322) is also provided on the connecting shaft (3).

2. A tension adjustment device for an embroidery stretcher according to claim 1, characterized in that: The fixing mechanism comprises an arcuate groove (22) provided in the middle of the rotating drum (2), the axis of the arcuate groove (22) being parallel to the axis of the rotating drum (2) in a direction perpendicular to the connecting shaft (3), an arcuate plate (23) being provided in the arcuate groove (22), a moving block (24) being provided on the concave surface of the arcuate plate (23), a threaded hole (25) being provided in the moving block (24), a bolt (251) penetrating the rotating drum (2) being provided in the threaded hole (25), the axis of the bolt (251) being parallel to the axis of the rotating drum The axes of (2) are perpendicular and intersecting, the moving block (24) and the bolt (251) are both arranged in a clearance groove provided on the body of the rotating drum (2), the bolt (251) is restricted in the clearance groove and can only rotate about its axis and cannot move along the groove, the moving block (24) is restricted by the groove wall of the clearance groove and cannot rotate about the axis of the bolt (251), so rotating the bolt (251) can make the moving block (24) move in the clearance groove along the axis direction of the bolt (251), thereby driving the arc panel (23) to move, thereby clamping the embroidery cloth.

3. The tension adjustment device for an embroidery stretcher according to claim 2, characterized in that: The arc panel (23) is provided with an anti-skid layer (26), and the anti-skid layer (26) has lines parallel to the axis of the rotating drum (2).

4. The tension adjustment device for an embroidery stretcher according to claim 1, characterized in that: The locking end includes a first ratchet (27) coaxially mounted near the locking end (11) of the rotating drum (2), the ratchet surface of the first ratchet (27) protruding toward the end away from the rotating drum (2), the locking end (11) of the rotating seat is coaxially provided with a mounting shaft (29) penetrating the first ratchet (27), a second ratchet (28) capable of engaging with the first ratchet (27) is sleeved on the mounting shaft (29), the second ratchet (28) can move along the axis on the mounting shaft (29), and a spring a (291) is coaxially arranged between the second ratchet (28) and the rotating seat, the spring a (291) causing the second ratchet (28) to press against the first ratchet. The ratchet (27) is provided with a pair of pull rods (281) parallel to the axis at one end of the second ratchet (28) away from the first ratchet (27), and the pull rod (281) extends from the outer end surface of the rotating seat through the locking end (11) of the rotating seat. The first ratchet (27), the second ratchet (28), the spring a (291) and the pull rod (281) cooperate to make the rotating drum (2) rotate only to one side, and to make the rotating drums (2) on both sides rotate in opposite directions. A handle (282) is provided between the pull rods (281) for easy operation. Pulling the handle (282) separates the second ratchet (28) from the first ratchet (27), so that the rotating drum (2) can rotate freely.

5. The tension adjustment device for an embroidery stretcher according to claim 1, characterized in that: A plurality of connecting rods (33) are installed between the take-up wheels (31) on the connecting shaft (3), and a connecting rod (33) is also provided between the take-up wheel (31) near the take-up drum (322) and the take-up drum (322) to connect them together. Bearings are provided between the take-up drum (322), the take-up wheel (31) and the connecting shaft (3) to reduce friction.

6. The tension adjustment device for an embroidery stretcher according to claim 1, characterized in that: The locking mechanism includes a first ratchet ring (34) coaxially mounted on one end of the take-up drum (322) away from the take-up wheel (31), a second ratchet ring (35) meshed with the first ratchet ring (34), the second ratchet ring (35) coaxially sleeved on the connecting shaft (3), a transverse block (36) provided on the inner side wall of the second ratchet ring (35), a guide groove (361) for enabling the transverse block (36) to move along the axis of the connecting shaft (3), a flange (37) provided on the connecting shaft (3) on the side of the second ratchet ring (35) away from the first ratchet ring (34), and a spring b (38) sleeved on the connecting shaft (3) between the flange (37) and the second ratchet ring (35) for pressing the second ratchet ring (35) against the take-up drum (322).

7. The tension adjustment device for an embroidery stretcher according to claim 6, characterized in that: A release trigger (381) is provided on the outer side wall of the second ratchet ring (35). Pulling the release trigger (381) to move away from the take-up drum (322) can cause the second ratchet ring (35) to move along the guide groove (361) away from the first ratchet ring (34), allowing the take-up drum (322) to rotate freely, thereby releasing the tension line (32).

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