A fabric changing structure for an embroidery machine

Abstract

This utility model relates to the field of embroidery machine technology, specifically an embroidery machine fabric changing structure. It includes a positioning mechanism located above the embroidery frame. The positioning mechanism comprises a frame body, with rotating rollers positioned below each of the four sides of the frame. Side plates are rotatably fitted onto both ends of the roller shafts of the four rotating rollers, and one end of each side plate is fixedly connected to the bottom surface of the frame body. In this utility model, by laying the lining fabric onto the embroidery frame, a cylinder is activated to move the frame body, bringing the edges of the rotating rollers closer to the inner sidewall of the embroidery frame. A drive motor is then activated, driving multiple rotating rollers to rotate synchronously via a main bevel gear and a secondary bevel gear, pulling the lining fabric outwards and flattening it. The embroidery fabric is then laid on top of the lining fabric and flattened by rubbing it with rotating rollers. A magnetic adsorption plate clamps the lining fabric and embroidery fabric, making it difficult for the lining fabric to move due to the high friction between it and the adsorption plate, thus flattening the embroidery fabric. By lowering the rotating rollers, the lining fabric and embroidery fabric are pressed into the groove for fixation, facilitating fabric changing for the user.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machine technology, specifically to a fabric changing structure for an embroidery machine. Background Technology

[0002] The embroidery frame and needle of an embroidery machine work together. While the needle moves up and down to embroider, the embroidery frame is moved in a planar direction (usually along the X and Y axes) by the machine's support. The machine's control system precisely controls the frame's movement trajectory based on pre-input pattern data, thus performing the embroidery. Embroidery work typically involves embroidering the fabric inside the frame. A backing cloth and embroidery fabric are usually placed on the frame. The embroidery fabric serves as the carrier of the embroidery pattern, while the backing cloth provides support. Both the backing cloth and embroidery fabric are replaced after the embroidery is finished. The lining and embroidery fabric are usually changed manually. During the change, the lining is laid flat on the embroidery frame, and then the embroidery fabric is laid flat on the lining. Finally, the flattened lining and embroidery fabric are fixed to the embroidery frame using clamps. The whole process is quite tedious. During the laying and fixing process, it is necessary to ensure that the lining and embroidery fabric are flat and wrinkle-free. Wrinkles will affect the quality of the embroidery, causing uneven stitches or pattern deformation. Generally, manual flattening may require multiple adjustments due to inaccurate operation and human factors, which is inefficient and reduces the efficiency of changing fabrics, making it quite inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a fabric changing structure for an embroidery machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An embroidery machine fabric changing structure includes an embroidery frame and a positioning mechanism for smoothing and fixing the embroidery fabric and backing fabric. The positioning mechanism is located above the embroidery frame and includes a frame body. Rollers are provided on the lower sides of the four sides of the frame body. Side plates are rotatably sleeved at both ends of the roller shafts of the four rollers. One end of any side plate is fixedly connected to the bottom surface of the frame body. A groove is provided on the top surface of the embroidery frame, and the height of the inner side wall of the embroidery frame is greater than the height of the outer side wall. The four rollers are movably engaged inside the groove.

[0005] Furthermore, the inner sidewall of the embroidery frame is fixedly connected to multiple base plates, and the inner sidewall of the embroidery frame is slidably fitted with an adsorption plate. A spring is fixedly connected between the multiple base plates and the adsorption plate. Multiple guide rails are fixedly connected to the inner sidewall of the frame, and a frame is slidably fitted to the outer sidewall of the multiple guide rails. Sliding holes are opened at both the top and bottom ends of the multiple frames, and sliding rods are slidably fitted between the two sliding holes on the multiple frames. Magnets are fixedly connected to the bottom ends of the multiple sliding rods.

[0006] Furthermore, multiple sliding rods are fixedly connected to the top of each sliding rod and the adjacent sleeve frame with a return spring, and multiple magnets are located below the adjacent sleeve frame.

[0007] Furthermore, both ends of the embroidery frame are fixedly connected to L-shaped frames, and a connecting plate is fixedly connected between the tops of the two L-shaped frames. Multiple cylinders are fixedly connected to the top surface of the connecting plate, and multiple uprights are fixedly connected to the top surface of the frame. Each upright corresponds to one of the multiple cylinders, and the top of the upright is fixedly connected to the movable end of the corresponding cylinder.

[0008] Furthermore, each of the four roller shafts is fixedly fitted with a main bevel gear, and the main bevel gear at each end of any roller meshes with the main bevel gears on the two adjacent rollers.

[0009] Furthermore, a motor box is fixedly connected to the top surface of the frame, and a drive motor is installed inside the motor box. A secondary bevel gear is fixedly connected to the middle of the roller shaft of one of the rollers and the motor shaft of the drive motor, and the two secondary bevel gears mesh with each other.

[0010] Furthermore, multiple top blocks are fixedly connected to the bottom surfaces of both L-shaped frames.

[0011] Compared with the prior art, the beneficial effects of this utility model are: First, the lining cloth is laid on the embroidery frame. Then, the cylinder is activated to move the frame, bringing the edge of the rotating roller closer to the edge of the inner wall of the embroidery frame. Next, the drive motor is activated to drive multiple rotating rollers to rotate synchronously through the main bevel gear and the secondary bevel gear, pulling the lining cloth outward from the embroidery frame to flatten it. Then, the frame is moved to lay the embroidery cloth on the lining cloth. The rotating roller is then used to rub the embroidery cloth to flatten it. The magnetic adsorption plate is used to hold the lining cloth and the embroidery cloth together, making it difficult for the lining cloth to move due to the high friction between it and the adsorption plate, thus flattening the embroidery cloth. Finally, the rotating roller is lowered to press the lining cloth and the embroidery cloth into the groove for fixation, making it easy for the user to change the cloth. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the embroidery frame in this utility model; Figure 3 This is a schematic diagram of the adsorption plate and the base plate structure in this utility model; Figure 4 This is a schematic diagram of the positioning mechanism structure in this utility model; Figure 5 This is a utility model Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the guide rail and slide bar structure in this utility model.

[0013] In the diagram: 100, embroidery frame; 101, inlay groove; 110, base plate; 111, rebound spring; 200, suction plate; 300, guide rail; 310, sleeve frame; 320, slide rod; 321, return spring; 330, magnet; 400, positioning mechanism; 401, main bevel gear; 402, secondary bevel gear; 410, frame; 420, rotating roller; 421, side plate; 430, motor box; 440, L-shaped frame; 441, connecting plate; 442, cylinder; 443, top block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6 In this embodiment of the utility model, an embroidery machine fabric changing structure includes an embroidery frame 100 and a positioning mechanism 400 capable of smoothing and fixing the embroidery fabric and the lining fabric. The positioning mechanism 400 is located above the embroidery frame 100. The positioning mechanism 400 includes a frame body 410, and each of the four sides of the frame body 410 is provided with a rotating roller 420. Both ends of the roller shafts of the four rotating rollers 420 are rotatably sleeved with side plates 421. One end of any side plate 421 is fixedly connected to the bottom surface of the frame body 410. The top surface of the embroidery frame 100 is provided with a groove 101, and the height of the inner side wall of the embroidery frame 100 is greater than the height of the outer side wall. The four rotating rollers 420 are movably engaged inside the groove 101.

[0016] Specifically, the embroidery frame 100 can be fixedly mounted on the bracket of the embroidery machine. During the embroidery process, the embroidery machine moves the embroidery frame 100 via the bracket, coordinating with the needle to perform embroidery. The outer wall of the rotating roller 420 has a rubber layer. When changing fabric, the frame 410 can be moved to disengage the rotating roller 420 from the groove 101. Then, the lining fabric is laid on the embroidery frame 100 to cover it, so that the lining fabric is located in the gap between the embroidery frame 100 and the rotating roller 420. Because the edge of the inner wall of the embroidery frame 100 is relatively high, when the frame 410 is moved so that the rotating roller 420 is partially embedded in the groove 101, the rotating roller 420 does not contact the inner bottom surface of the groove 101. The rotating roller 420 and the inner wall of the embroidery frame 100 are in close contact. The small gaps between the sidewall edges allow the rotating rollers 420 to rub the lining fabric outwards from the embroidery frame 100 as they rotate. By simultaneously rubbing the lining fabric outwards from the embroidery frame 100 with four rotating rollers 420, the lining fabric inside the embroidery frame 100 is flattened. Then, the embroidery fabric is laid on top of the lining fabric and flattened in the same way. After the lining fabric and embroidery fabric are flattened, the rotating frame 410 moves the rotating rollers 420 downwards and embeds them into the groove 101. The rotating rollers 420 press the lining fabric and embroidery fabric against the bottom surface of the groove 101 for fixation. At the same time, the rotating rollers 420 can press the lining fabric and embroidery fabric against the inner sidewall of the groove 101 for fixation. This flattening and fixing of the lining fabric and embroidery fabric makes it easier for the user to change the fabric on the embroidery machine.

[0017] Example 1 like Figure 2-4 and Figure 6 As shown, in this embodiment, multiple base plates 110 are fixedly connected to the inner sidewall of the embroidery frame 100, and an adsorption plate 200 is slidably sleeved on the inner sidewall of the embroidery frame 100. A return spring 111 is fixedly connected between the multiple base plates 110 and the adsorption plate 200. Multiple guide rails 300 are fixedly connected to the inner sidewall of the frame 410, and a sleeve frame 310 is slidably sleeved on the outer sidewall of the multiple guide rails 300. Sliding holes are opened at both the top and bottom ends of the multiple sleeve frames 310, and a sliding rod 320 is slidably sleeved between the two sliding holes on the multiple sleeve frames 310. A magnet 330 is fixedly connected to the bottom end of the multiple sliding rods 320, and a reset spring 321 is fixedly connected between the top end of the multiple sliding rods 320 and the adjacent sleeve frame 310. The multiple magnets 330 are all located below the adjacent sleeve frame 310.

[0018] In this embodiment, after the lining is flattened, during the process of flattening the embroidery fabric, the embroidery fabric can be laid on the flattened lining. By moving the frame 410, the rotating roller 420 is not in contact with the bottom surface of the groove 101. The gap between the rotating roller 420 and the inner sidewall edge of the embroidery frame 100 is small. At this time, the sliding rod 320 and the sleeve frame 310 drive the magnet 330 to move to the adsorption plate 200. Then, pressing the sliding rod 320 presses the lining and embroidery fabric into the embroidery frame 100, and the magnet 330 is adsorbed and fixed to the adsorption plate 200, clamping the lining and embroidery fabric between the magnet 330 and the adsorption plate 200. The top surface of the adsorption plate 200 is attached with a rubber layer, making it difficult for the lining to slide on the surface of the adsorption plate 200, thereby flattening the embroidery fabric inside the embroidery frame 100. The lining is fixed, and then the magnet 330 and the slide bar 320 are reset by the return spring 321, which pulls up the adsorption plate 200, so that the lining and embroidery cloth held by the magnet 330 are flush with the inner side wall edge of the embroidery frame 100. Then, as the rotating roller 420 rotates, the embroidery cloth is flattened. The bottom surface of the magnet 330 is relatively smooth, so the embroidery cloth can slide on the surface of the magnet 330 when flattened, so that the lining is not prone to wrinkles when flattening the embroidery cloth. After the embroidery cloth and the lining are flattened, the frame 410 can be moved so that the rotating roller 420 presses the lining and embroidery cloth against the inner side wall and inner bottom surface of the groove 101 for fixation. Then, the slide bar 320 is slid to make the magnet 330 disengage from the adsorption plate 200, and then the adsorption plate 200 can be pulled back by the return spring 111.

[0019] like Figure 4-5 As shown, in this embodiment, both ends of the embroidery frame 100 are fixedly connected to L-shaped frames 440, and a connecting plate 441 is fixedly connected between the top ends of the two L-shaped frames 440. Multiple cylinders 442 are fixedly connected to the top surface of the connecting plate 441. Multiple uprights are fixedly connected to the top surface of the frame 410, and the multiple uprights correspond one-to-one with the multiple cylinders 442. The top end of the upright is fixedly connected to the movable end of the corresponding cylinder 442. Both ends of the roller shafts of the four rollers 420 are fixedly sleeved with main bevel gears 401. The main bevel gears 401 at both ends of any roller 420 mesh with the main bevel gears 401 on the two adjacent rollers 420 respectively. A motor box 430 is fixedly connected to the top surface of the frame 410, and a drive motor is provided inside the motor box 430. The middle part of the roller shaft of one roller 420 and the motor shaft of the drive motor are both fixedly connected with secondary bevel gears 402, and the two secondary bevel gears 402 mesh with each other.

[0020] In specific implementation, multiple cylinders 442 are activated by a synchronous controller, which in turn drive the frame 410 to move and adjust the height of the rotating roller 420. The controller also activates the drive motor, which drives one rotating roller 420 to rotate via the secondary bevel gear 402. This rotating roller 420 then drives four rotating rollers 420 to rotate synchronously via the main bevel gear 401. Two parallel rotating rollers 420 rotate in opposite directions, so that when the four rotating rollers 420 rotate, they synchronously rub the fabric inside the embroidery frame 100 to the outside of the embroidery frame 100, thereby flattening the fabric inside the embroidery frame 100.

[0021] Example 2 Based on Embodiment 1, the L-shaped frame 440 is supported by a top block 443.

[0022] like Figure 4 As shown, in this embodiment, multiple top blocks 443 are fixedly connected to the bottom surfaces of both L-shaped frames 440.

[0023] In practice, the bottom of the top block 443 is hemispherical, and the top block 443 can contact the worktable of the embroidery machine, thereby supporting the L-shaped frame 440 through the top block 443 and reducing the pressure exerted by the L-shaped frame 440 on the embroidery frame 100.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fabric changing structure for an embroidery machine, comprising an embroidery frame (100), characterized in that, include: The positioning mechanism (400) is located above the embroidery frame (100). The positioning mechanism (400) includes a frame (410), and a rotating roller (420) is provided on the lower side of the four sides of the frame (410). The roller shafts of the four rotating rollers (420) are rotatably sleeved with side plates (421). One end of any side plate (421) is fixedly connected to the bottom surface of the frame (410). The top surface of the embroidery frame (100) is provided with a groove (101), and the height of the inner side wall of the embroidery frame (100) is greater than the height of the outer side wall. The four rotating rollers (420) are movably engaged in the groove (101).

2. The fabric changing structure of the embroidery machine according to claim 1, characterized in that, Both ends of the embroidery frame (100) are fixedly connected to L-shaped frames (440), and a connecting plate (441) is fixedly connected between the top ends of the two L-shaped frames (440). Multiple cylinders (442) are fixedly connected to the top surface of the connecting plate (441), and multiple uprights are fixedly connected to the top surface of the frame (410). The multiple uprights correspond one-to-one with the multiple cylinders (442), and the top end of the upright is fixedly connected to the movable end of the corresponding cylinder (442).

3. The fabric changing structure of the embroidery machine according to claim 2, characterized in that, Multiple top blocks (443) are fixedly connected to the bottom surfaces of both L-shaped frames (440).

4. The embroidery machine fabric changing structure according to any one of claims 1-3, characterized in that, The four rollers (420) are all fixedly fitted with main bevel gears (401) at both ends of the roller shaft. The main bevel gears (401) at both ends of any roller (420) mesh with the main bevel gears (401) on the two adjacent rollers (420).

5. The embroidery machine fabric changing structure according to claim 4, characterized in that, The top surface of the frame (410) is fixedly connected to a motor box (430), and a drive motor is installed inside the motor box (430). The middle part of the roller shaft of a roller (420) and the motor shaft of the drive motor are both fixedly connected to a secondary bevel gear (402), and the two secondary bevel gears (402) mesh with each other.

6. The fabric changing structure of the embroidery machine according to claim 5, characterized in that, The inner wall of the embroidery frame (100) is fixedly connected to multiple base plates (110), and an adsorption plate (200) is slidably sleeved on the inner wall of the embroidery frame (100). A spring (111) is fixedly connected between the multiple base plates (110) and the adsorption plate (200). The inner wall of the frame (410) is fixedly connected to multiple guide rails (300), and a frame (310) is slidably sleeved on the outer wall of the multiple guide rails (300). Sliding holes are opened at both the top and bottom ends of the multiple frames (310), and a sliding rod (320) is slidably sleeved between the two sliding holes on the multiple frames (310). A magnet (330) is fixedly connected to the bottom end of the multiple sliding rods (320).

7. The embroidery machine fabric changing structure according to claim 6, characterized in that, Each of the multiple sliding rods (320) has a return spring (321) fixedly connected between its top end and the adjacent sleeve (310), and each of the multiple magnets (330) is located below the adjacent sleeve (310).

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