A positioning device for embroidery of an embroidery machine

Abstract

The present application relates to the technical field of embroidery, in particular to a positioning device for embroidery machine embroidery, comprising a backing plate for mounting on a garment frame of the embroidery machine, a recess is formed in the top of the backing plate, and the positioning device further comprises a controller, a wrinkle removing mechanism, a pressing mechanism and a reference mechanism, the wrinkle removing mechanism comprises a driving assembly, two scraper rods and two sliding assemblies, the pressing mechanism comprises a first transmission assembly, a traction assembly, a second transmission assembly and two pressing rods, and the reference mechanism comprises a sensing assembly, two lead screws, two laser indicators and four first scale values, the driving assembly, the sensing assembly, each laser indicator and each sliding assembly are electrically connected with the controller, and the positioning device for embroidery machine embroidery can automatically determine the needle drop points of a single complete pattern and accurately control the initial needle drop positions of several different small patterns in a single dispersed pattern.

Description

Technical Field

[0001] This invention relates to the field of embroidery technology, and more specifically to a positioning device for embroidery on an embroidery machine. Background Technology

[0002] Embroidery machines, also known as computerized embroidery machines, are the most advanced embroidery machinery of our time. They enable traditional hand embroidery to be completed at high speed and efficiency, and can also achieve the "multi-layered, multi-functional, uniform, and perfect" requirements that hand embroidery cannot reach. It is an electromechanical product embodying multiple high-tech advancements. As computerized embroidery replaces hand embroidery, computerized embroidery machines will become the main type of machinery in the embroidery industry.

[0003] Before embroidery, the embroidery machine needs to position the fabric to be embroidered to prevent it from moving during the embroidery process and affecting the embroidery effect. This positioning is mostly done through an embroidery frame.

[0004] Existing positioning devices have the following shortcomings:

[0005] Existing embroidery machines generally use a single laser pointer to position the needle. This not only makes it difficult to flexibly adjust the position of the needle, but also makes it difficult to accurately control the position of each needle when embroidering large patterns composed of several patterns of different sizes. Therefore, the function is relatively simple and the practicality needs to be improved.

[0006] Most existing embroidery frames require manual insertion of fabric into the frame before closing, which cannot ensure that the fabric is centered, affecting subsequent embroidery work. At the same time, they cannot achieve automatic and rapid pressing of the fabric, and the fixing efficiency needs to be improved.

[0007] If the embroidery frame cannot smooth out the wrinkles on the fabric surface when positioning the fabric, it will cause omissions in the embroidery pattern, thus affecting the embroidery effect. Summary of the Invention

[0008] The purpose of this invention is to provide a positioning device for embroidery on an embroidery machine.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A positioning device for embroidery on an embroidery machine is provided, including a liner for mounting on the garment frame of the embroidery machine, the top of which has a groove.

[0011] It also includes a controller, a wrinkle-removing mechanism, a clamping mechanism, and a reference mechanism;

[0012] The wrinkle removal mechanism is located on the outer wall of the backing plate to smooth out the wrinkles on the surface of the fabric to be embroidered. The wrinkle removal mechanism includes a drive assembly, two scrapers and two sliding assemblies. The drive assembly is located at the bottom of the backing plate, and the two sliding assemblies are symmetrically arranged at both ends of the backing plate. Each scraper is fixed on a sliding assembly.

[0013] The pressing mechanism is located on the outer wall of the lining plate to fix the fabric to be embroidered. The pressing mechanism includes a first transmission component, a traction component, a second transmission component, and two pressure rods. Four support blocks are symmetrically arranged at both ends of the lining plate. A positioning plate is fixed between every two support blocks. A rotating rod is provided between every two support blocks in the width direction. Each pressure rod is fixed on the outer wall of a rotating rod through a second connecting plate. The first transmission component is located between the traction component and the drive component. The traction component is located between the first transmission component and one end of one of the rotating rods. The second transmission component is located between the two rotating rods.

[0014] The reference mechanism is located on the top of the liner to position the needle. The reference mechanism includes a sensing component, two lead screw slides, two laser pointers, and four first scale values. The sensing component and the two lead screw slides are both located on the top of the liner. Each laser pointer is slidably mounted on a lead screw slide via a slider. The four first scale values ​​are located on the side of the groove. The drive component, sensing component, each laser pointer, and each sliding component are electrically connected to the controller.

[0015] Furthermore, the drive assembly includes a micro motor, a first rotating shaft, and two first cylindrical gears. The first rotating shaft is rotatably mounted on the bottom of the liner, and the micro motor is fixedly mounted on the bottom of the liner. Its output end is fixedly connected to one end of the first rotating shaft via a coupling. Both gears are fixedly mounted on the first rotating shaft, and the micro motor is electrically connected to the controller.

[0016] Furthermore, each sliding component includes a first connecting plate, a lifting plate, an electric push rod, and two first racks. The two first racks are slidably mounted on the outer wall of the liner, and each first rack is meshed with a first cylindrical gear. The first connecting plate is fixedly mounted at the end of the two first racks away from the first cylindrical gear. The lifting plate is slidably mounted on the top of the first connecting plate via two guide rods. The electric push rod is fixedly mounted on the top of the first connecting plate, and its output end is fixedly connected to the bottom of the lifting plate. The lifting plate has a U-shaped structure. Each scraper is fixedly connected to the end of the lifting plate away from the guide rod. Two limit blocks are symmetrically arranged on the top of the liner. Each limit block has a limit groove for inserting one end of the scraper. The electric push rod is electrically connected to the controller.

[0017] Furthermore, the first transmission assembly includes a second rack, a second cylindrical gear, a first bevel gear, and a second bevel gear. The second rack is fixedly disposed at the bottom of the first rack. The bottom of the liner is rotatably provided with a first hinge shaft and a second hinge shaft. The second cylindrical gear and the first bevel gear are both fixedly disposed on the first hinge shaft. The second rack is meshed with the second cylindrical gear. The second bevel gear is fixedly disposed on the second hinge shaft. The first bevel gear and the second bevel gear are meshed with each other, and the first bevel gear is smaller than the second bevel gear.

[0018] Furthermore, the traction assembly includes a turntable, a connecting rod, a plug rod, and a swing rod. The turntable is fixed at the end of the second hinge shaft away from the second bevel gear. The connecting rod is hinged to the outer wall of the turntable. The plug rod is fixed on the outer wall of the connecting rod at the end away from the turntable. The swing rod is fixed on one of the rotating rods near the connecting rod. The outer wall of the swing rod is provided with a clearance groove for the plug rod to slide.

[0019] Furthermore, the second transmission assembly includes a third cylindrical gear, a fourth cylindrical gear, a synchronous belt, and two synchronous pulleys. One of the synchronous pulleys is fixedly mounted on a rotating rod near the connecting rod. A third hinge shaft is rotatably mounted on the outer wall of one of the support blocks. The other synchronous pulley is fixedly mounted on the third hinge shaft. The synchronous belt is sleeved between the two synchronous pulleys. The third cylindrical gear is fixedly mounted on the third hinge shaft. The fourth cylindrical gear is fixedly mounted at one end of another rotating rod. The third cylindrical gear and the fourth cylindrical gear are meshed together. Two tensioning pulleys are rotatably mounted on the bottom of the liner. The synchronous belt is in contact with the outer edges of the two tensioning pulleys.

[0020] Furthermore, the sensing component includes two position sensors, which are symmetrically arranged at both ends of the top of the liner, and each position sensor is electrically connected to the controller.

[0021] Furthermore, the bottom of the liner is fixed with two limiting rods by the mounting plate. Each limiting rod has a buffer spring on its outer wall. A sliding plate is fixed between the two first racks. Each limiting rod is slidably connected to the sliding plate. The outer walls of the limiting plate and the sliding plate abut against the two ends of each buffer spring.

[0022] Furthermore, a drive wheel is fixedly provided on the outer wall of another rotating rod, and a first scale plate is rotatably provided on the outer wall of the liner via a second rotating shaft. A driven wheel is fixedly provided on one of the second rotating shafts near the fourth cylindrical gear. A belt is fitted between the drive wheel and the driven wheel, and the drive wheel is smaller than the driven wheel. A third bevel gear is fixedly provided at the end of the second rotating shaft away from the driven wheel.

[0023] Furthermore, a second scale plate is rotatably mounted on the outer wall of the liner via a third rotating shaft, and a fourth bevel gear is fixedly mounted at one end of the third rotating shaft, with the third bevel gear and the fourth bevel gear meshing together.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention, through the design of a reference machine, namely a sensing component, two lead screw slides, two laser pointers, and four first scale values, enables the fabric to be centered on the top of the backing plate, achieving initial positioning. The two lead screw slides drive the two laser pointers to slide, and the controller activates the two laser pointers to emit two mutually perpendicular lasers. Since each laser pointer is fixedly connected to a slider, the position of the intersection point can be arbitrarily adjusted in conjunction with the sliders on the two lead screw slides. This facilitates the embroidery needle to be inserted according to the intersection point, satisfying the precise positioning of different needle insertion positions and facilitating the embroidery of patterns in different positions on the fabric surface.

[0026] 2. The second embodiment of this invention addresses the issue that in actual embroidery, some patterns are not complete sets, but rather composed of several patterns of different sizes forming a larger pattern. The spacing between these patterns varies, requiring precise control of the needle's repositioning position after each small pattern is finished and the next pattern begins. In this situation, because another rotating rod is fixedly connected to the driving wheel and the driven wheel is fixedly connected to the second rotating shaft, while one of the gears near the fourth cylindrical gear rotates clockwise, the second rotating shaft drives the first scale plate to rotate 90 degrees clockwise, so that the side with the scale value faces upwards. Since the second scale plate is fixedly connected to the third rotating shaft, the third bevel gear and the fourth bevel gear... The gear meshing connection allows the liner to rotate through a third shaft and connect to the second scale plate, causing the second scale plate to rotate 90 degrees counterclockwise. This ensures that the side of the second scale plate with the scale value faces upwards, facilitating the horizontal placement of the lasers emitted by the two laser pointers above the first and second scale plates. When the two laser pointers slide horizontally via two lead screw slides, the first and second scale plates provide a sliding distance, allowing the operator to promptly determine the distance of movement of the intersection of the two laser lines, i.e., the distance of movement of the needle placement position. This enables precise placement of the needle at the next pattern's placement position after the previous pattern is finished, allowing for the embroidery of several patterns with different spacings, thus improving the flexibility of the device.

[0027] 3. This invention, through the design of a wrinkle-removing mechanism, namely a drive component, two scrapers, and two sliding components, enables the fabric to be pressed together by two lifting scrapers, which then slide horizontally from the top center of the backing plate to both ends, thereby scraping away wrinkles on the fabric surface. This achieves a wrinkle-removing effect, ensuring that no omissions occur during subsequent embroidery patterns and improving the embroidery effect. At the same time, through two symmetrically designed limiting blocks, the two scrapers can be automatically limited by two limiting grooves while sliding into position, thus enabling the two scrapers to simultaneously press together the two long sides of the fabric. The same structure achieves two different effects.

[0028] 4. By designing a pressing mechanism, namely a first transmission component, a traction component, a second transmission component, and two pressure rods, this invention can press the two long sides of the fabric to be embroidered while the two scrapers slide into place and press them together, and simultaneously press the two wide sides of the fabric to be embroidered by the two pressure rods. This achieves pressing and fixing of the four sides of the fabric after wrinkle removal, effectively preventing the fabric from shifting during the embroidery process and improving the accuracy of the embroidery.

[0029] 5. By designing the first transmission component, the present invention enables the wrinkle removal mechanism and the pressing mechanism to operate in conjunction. That is, while removing wrinkles, the four sides of the fabric are pressed simultaneously. This not only avoids the problem of manual pressing and fixing in the prior art, but also achieves automatic pressing and fixing, improving the fixing efficiency of the fabric. It also ensures that the fabric is pressed immediately after wrinkle removal, without causing twisting or other problems, which facilitates subsequent positioning and embroidery.

[0030] 6. By designing a sensing component, this invention enables the linkage between the wrinkle removal mechanism and the reference mechanism. That is, while the two scrapers slide into place to remove wrinkles, the two laser indicators can be automatically activated to form a cross beam, the center point of which can be used to locate the needle drop point.

[0031] 7. Through the design of the first embodiment and the second example, this invention enables the wrinkle removal mechanism, the pressing mechanism and the reference mechanism to work together in pairs. This not only achieves automatic pressing and wrinkle removal of the fabric before embroidery, preventing omissions in the embroidery pattern and improving the embroidery and positioning effects, but also enables automatic determination of the needle placement point of a single complete pattern and precise control of the initial needle placement position of several different small patterns within a single dispersed pattern. This satisfies different embroidery and positioning requirements, further enhancing the flexibility and practicality of the device and truly realizing multiple uses for one device. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0034] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0035] Figure 3 for Figure 1 Enlarged view of point B in the image;

[0036] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0037] Figure 5 for Figure 4Enlarged view of point C in the image;

[0038] Figure 6 This is a three-dimensional structural diagram of the wrinkle removal mechanism, pressing mechanism, and reference mechanism of the present invention;

[0039] Figure 7 for Figure 6 Enlarged view of point D in the image;

[0040] Figure 8 This is a three-dimensional structural diagram of the second embodiment of the present invention;

[0041] Figure 9 for Figure 8 Enlarged view of point E in the image;

[0042] Figure 10 for Figure 8 Enlarged view of point F in the image;

[0043] In the picture:

[0044] Liner 1,

[0045] Positioning plate 10, rotating rod 11, buffer spring 12, sliding plate 13

[0046] Wrinkle removal clinic 2,

[0047] Drive assembly 20, micro motor 200, first rotating shaft 201, first cylindrical gear 202,

[0048] Scraper bar 21,

[0049] Sliding assembly 22, first connecting plate 220, lifting plate 221, electric push rod 222, first rack 223, limit block 224.

[0050] Clamping mechanism 3,

[0051] First transmission assembly 30, second rack 300, second cylindrical gear 301, first bevel gear 302, second bevel gear 303.

[0052] Traction assembly 31, turntable 310, connecting rod 311, insert rod 312, swing rod 313.

[0053] Second transmission assembly 32, third cylindrical gear 320, fourth cylindrical gear 321, synchronous belt 322, synchronous pulley 323, tension pulley 324.

[0054] Compression bar 33,

[0055] Reference organization 4,

[0056] Sensing component 40, position sensor 400,

[0057] Screw slide table 41,

[0058] Slider 410,

[0059] Laser pointer 42,

[0060] The first scale value is 43.

[0061] Active wheel 5,

[0062] Second pivot 50,

[0063] First scale plate 51,

[0064] Driven wheel 52,

[0065] Belt 53,

[0066] Third bevel gear 54,

[0067] Third pivot 55,

[0068] Second scale plate 56

[0069] Fourth bevel gear 57. Detailed Implementation

[0070] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0071] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0072] Example 1

[0073] This invention provides a technical solution, referring to Figures 1 to 10 As shown, a positioning device for embroidery on an embroidery machine includes a backing plate 1 for mounting on the garment frame of the embroidery machine. A groove is formed at the top of the backing plate 1, and several sheets of backing paper are horizontally placed inside the groove. The fabric to be embroidered is placed horizontally on top of the top sheets of backing paper. The backing paper serves to prevent the embroidery needle from piercing the backing plate 1 when embroidering the pattern through the fabric, thus providing protection.

[0074] It also includes a controller, a wrinkle-removing mechanism 2, a clamping mechanism 3, and a reference mechanism 4.

[0075] The wrinkle-removing mechanism 2 is located on the outer wall of the backing plate 1 to smooth out wrinkles on the surface of the fabric to be embroidered. The wrinkle-removing mechanism 2 includes a drive assembly 20, two scraper rods 21, and two sliding assemblies 22. The drive assembly 20 is located at the bottom of the backing plate 1, and the two sliding assemblies 22 are symmetrically arranged at both ends of the backing plate 1. Each scraper rod 21 is fixedly mounted on one sliding assembly 22.

[0076] A pressing mechanism 3 is installed on the outer wall of the lining plate 1 to fix the fabric to be embroidered. The pressing mechanism 3 includes a first transmission component 30, a traction component 31, a second transmission component 32, and two pressure rods 33. Four support blocks are symmetrically arranged at both ends of the lining plate 1. A positioning plate 10 is fixed between every two support blocks. The positioning plate 10 facilitates the installation of this device onto the garment frame of the embroidery machine, making it easy to use with existing embroidery machines and providing a connection effect, thus improving the practicality of this device. A rotating rod 11 is provided between every two support blocks in the width direction. Each pressure rod 33 is fixed to the outer wall of a rotating rod 11 through a second connecting plate. The first transmission component 30 is located between the traction component 31 and the drive component 20. The traction component 31 is located between the first transmission component 30 and one end of one of the rotating rods 11. The second transmission component 32 is located between the two rotating rods 11.

[0077] The reference mechanism 4 is located on the top of the lining plate 1 to position the needle. The reference mechanism 4 includes a sensing component 40, two lead screw slides 41, two laser pointers 42, and four first scale values ​​43. The sensing component 40 and the two lead screw slides 41 are both located on the top of the lining plate 1. Each laser pointer 42 is slidably mounted on a lead screw slide 41 via a slider 410. The four first scale values ​​43 are located on the sides of the groove and are respectively located at the top four corners of the groove. This ensures that the fabric is placed centered on the top of the lining paper inside the groove, facilitating the quick positioning of the needle. The drive component 20, the sensing component 40, each laser pointer 42, and each sliding component 22 are all electrically connected to the controller.

[0078] In this invention, a driving component 20 is designed to enable the two sliding components 22 to move synchronously, as shown in the figure. Figure 1 and Figure 5 As shown, the device includes a micro motor 200, a first rotating shaft 201, and two first cylindrical gears 202. The first rotating shaft 201 is rotatably mounted on the bottom of the liner 1, and the micro motor 200 is fixedly mounted on the bottom of the liner 1. The micro motor 200 is used instead of a conventional motor to minimize the overall weight of the device and facilitate its installation on the garment frame of an existing embroidery machine. It should be noted that the micro motor 200 typically has a diameter less than 160mm and is relatively lightweight. Its output end is fixedly connected to one end of the first rotating shaft 201 via a coupling. Both gears are fixed on the first rotating shaft 201. The micro motor 200 is electrically connected to the controller. When the bottom of both scrapers 21 is in contact with the surface of the fabric to be embroidered, the controller starts the micro motor 200, causing its output end to rotate clockwise. Since both first cylindrical gears 202 are fixedly connected to the first rotating shaft 201, and the first rotating shaft 201 is rotatably connected to the bottom of the liner 1, the output end of the micro motor 200 is fixedly connected to one end of the first rotating shaft 201 through a coupling, thereby driving the two first gears to rotate clockwise.

[0079] In this invention, in order to make the two scraper rods 21 move synchronously, two sliding components 22 are designed, referring to... Figure 1 and Figure 6 As shown, each sliding assembly 22 includes a first connecting plate 220, a lifting plate 221, an electric push rod 222, and two first racks 223. The two first racks 223 are slidably mounted on the outer wall of the liner 1. Each first rack 223 is meshed with a first cylindrical gear 202. The first connecting plate 220 is fixedly mounted at the end of the two first racks 223 away from the first cylindrical gear 202. The lifting plate 221 is slidably mounted on the top of the first connecting plate 220 via two guide rods. The electric push rod 222 is fixedly mounted on the top of the first connecting plate 220. The output end of the scraper 21 is fixedly connected to the bottom of the lifting plate 221. The lifting plate 221 has a U-shaped structure. Each scraper 21 is fixedly connected to the end of the lifting plate 221 away from the guide rod. Two limiting blocks 224 are symmetrically arranged on the top of the lining plate 1. Each limiting block 224 has a limiting groove for inserting one end of the scraper 21. The electric push rod 222 is electrically connected to the controller. When the fabric to be embroidered is placed in the center on top of the lining paper, the electric push rod 222 is activated by the controller, thereby retracting its output end. Since its output end is fixedly connected to the lifting plate 221, each Each scraper 21 is fixedly connected to the end of a lifting plate 221 away from the guide rod, thus causing the scraper 21 to descend until its bottom is in contact with the surface of the fabric to be embroidered. When the two first gears rotate clockwise, since both first racks 223 are slidably connected to the liner 1, and each first rack 223 is meshed with a first cylindrical gear 202, the ends of the two first racks 223 away from the first cylindrical gear 202 are fixedly connected to the bottom of the first connecting plate 220. The top of the first connecting plate 220 and the bottom of the lifting plate 221 are connected... Each scraper 21 is fixedly connected to both ends of the electric push rod 222 and to the end of a lifting plate 221 away from the guide rod. Since the two first cylindrical gears 202 are also meshed with the other two first racks 223, they work with another sliding component 22 to make the two scraper 21 slide horizontally from the middle of the liner 1 to both ends, thereby smoothing out the wrinkles on the entire surface of the fabric to be embroidered and achieving the wrinkle removal effect. When the scraper 21 slides to the limit groove on the limit block 224, it is limited, thereby pressing one long side of the fabric to be embroidered.

[0080] In this invention, a first transmission assembly 30 is designed to enable the wrinkle-removing mechanism 2 and the pressing mechanism 3 to operate in conjunction. (Refer to...) Figure 1 and Figure 5As shown, the first transmission assembly 30 includes a second rack 300, a second cylindrical gear 301, a first bevel gear 302, and a second bevel gear 303. The second rack 300 is fixedly mounted on the bottom of the first rack 223. The bottom of the liner 1 is rotatably provided with a first hinge shaft and a second hinge shaft. The second cylindrical gear 301 and the first bevel gear 302 are both fixedly mounted on the first hinge shaft. The second rack 300 is meshed with the second cylindrical gear 301. The second bevel gear 303 is fixedly mounted on the second hinge shaft. The first bevel gear 302 and the second bevel gear 303 are meshed together. Since 302 is smaller than the second bevel gear 303, when one of the first racks 223 slides away from the end of the liner plate 1, since the second rack 300 is fixedly connected to the bottom of the first rack 223, and both the second cylindrical gear 301 and the first bevel gear 302 are fixedly connected to the first hinge shaft, the second rack 300 is meshed with the second cylindrical gear 301, the second bevel gear 303 is fixedly connected to the second hinge shaft, the first bevel gear 302 and the second bevel gear 303 are meshed, and the first bevel gear 302 is smaller than the second bevel gear 303, thereby driving the second bevel gear 303 to rotate counterclockwise.

[0081] In this invention, a traction component 31 is designed to press one short side of the fabric to be embroidered firmly, as shown in the reference. Figure 1 and Figure 3 As shown, the traction assembly 31 includes a turntable 310, a connecting rod 311, a plug rod 312, and a swing rod 313. The turntable 310 is fixedly mounted on the end of the second hinge shaft away from the second bevel gear 303. The connecting rod 311 is hinged to the outer wall of the turntable 310. The plug rod 312 is fixedly mounted on the outer wall of the end of the connecting rod 311 away from the turntable 310. The swing rod 313 is fixedly mounted on one of the rotating rods 11 near the connecting rod 311. The outer wall of the swing rod 313 is provided with a clearance groove for the plug rod 312 to slide. When the second bevel gear 303 rotates counterclockwise, since the turntable 310 is fixedly connected to the end of the second hinge shaft away from the second bevel gear 303, the connecting rod 310... One end of rod 311 is hinged to the outer wall of turntable 310. Insert rod 312 is fixedly connected to the outer wall of the end of connecting rod 311 away from turntable 310. Swing rod 313 is fixedly connected to one of the rotating rods 11 near connecting rod 311. The outer wall of swing rod 313 is designed with a relief groove for insert rod 312 to slide. When connecting rod 311 rotates counterclockwise, the resistance force generated by insert rod 312 rotating inside the relief groove drives swing rod 313 to rotate. Since each scraper 21 is fixedly connected to rotating rod 11 through first connecting plate 220, the scraper 21 is driven to rotate counterclockwise until a short side of the fabric to be embroidered is pressed.

[0082] In this invention, a second transmission component 32 is designed to ensure that the other short side of the fabric to be embroidered is pressed simultaneously, as shown in the reference. Figure 1 and Figure 4As shown, the second transmission assembly 32 includes a third cylindrical gear 320, a fourth cylindrical gear 321, a synchronous belt 322, and two synchronous pulleys 323. One synchronous pulley 323 is fixedly mounted on one of the rotating rods 11 near the connecting rod 311. A third hinge shaft is rotatably mounted on the outer wall of one of the support blocks, and the other synchronous pulley 323 is fixedly mounted on the third hinge shaft. The synchronous belt 322 is sleeved between the two synchronous pulleys 323. The third cylindrical gear 320 is fixedly mounted on the third hinge shaft, and the fourth cylindrical gear 321 is fixedly mounted on one end of the other rotating rod 11. The third cylindrical gear 320 and the fourth cylindrical gear 321 are meshed together. Two tensioning pulleys 324 are rotatably mounted on the bottom of the liner 1. The timing belt 322 is attached to the outer edges of the two tensioning wheels 324. While pressing one short side of the fabric to be embroidered, one of the timing wheels 323 is fixedly connected to one of the rotating rods 11 near the connecting rod 311, the third hinge shaft is rotatably connected to one of the support blocks, the other timing wheel 323 is fixedly connected to the third hinge shaft, the two timing wheels 323 are connected by a belt 53, the third cylindrical gear 320 is fixedly connected to the third hinge shaft, the fourth cylindrical gear 321 is fixedly connected to one end of the other rotating rod 11, and the third cylindrical gear 320 and the fourth cylindrical gear 321 are meshed, thereby driving the other scraper 21 to rotate clockwise, simultaneously pressing the other short side of the fabric to be embroidered.

[0083] In this invention, a sensing component 40 is designed to enable the two laser pointers 42 to activate simultaneously while the four sides of the fabric to be embroidered are pressed together, as shown in the reference. Figure 1 , Figure 6 and Figure 8 As shown, the sensing component 40 includes two position sensors 400, which are symmetrically arranged at both ends of the top of the backing plate 1. Each position sensor 400 is electrically connected to the controller. When the two scraper rods 21 slide from the middle of the top of the backing plate 1 into the limiting grooves of the two limiting blocks 224 at both ends of the top of the backing plate 1, the two position sensors 400 detect the positioning information of the two scraper rods 21 and send it to the controller. The controller then activates the two laser pointers 42 to emit two mutually perpendicular lasers. Since each laser pointer 42 is fixedly connected to a slider 410, the position of the intersection point can be arbitrarily adjusted in conjunction with the sliders 410 on the two screw slides 41. This allows the embroidery needle to be inserted according to the intersection point position, satisfying the precise positioning of different needle insertion positions and facilitating the embroidery of patterns at different positions on the fabric surface.

[0084] In this invention, in order to effectively smooth out the wrinkles on the surface of the fabric to be embroidered, two buffer springs 12 are designed, as shown in the reference. Figure 1 and Figure 5As shown, the bottom of the lining plate 1 is fixedly provided with two limiting rods by the mounting plate. Each limiting rod is fitted with a buffer spring 12 on its outer wall. A sliding plate 13 is fixed between the two first racks 223. Each limiting rod is slidably connected to the sliding plate 13. The outer walls of the limiting plate and the sliding plate 13 respectively abut against the two ends of each buffer spring 12. When the two first racks 223 slide away from the end of the lining plate 1, since each buffer spring 12 is fitted with a limiting rod, and the sliding plate 13 is fixedly connected to the two first racks 223, each limiting rod is slidably connected to the sliding plate 13, and the outer walls of the limiting plate and the sliding plate 13 respectively abut against the two ends of each buffer spring 12, the two buffer springs 12 change from the initial state to the taut state to buffer, ensuring that the bottom of the scraper 21 slowly scrapes the wrinkles on the surface of the fabric to be embroidered, preventing omissions and improving the wrinkle removal effect.

[0085] Working principle: When the fabric to be embroidered is placed in the center on top of the backing paper, the electric push rod 222 is activated by the controller, which causes its output end to retract. Since its output end is fixedly connected to the lifting plate 221, each scraper 21 is fixedly connected to the end of a lifting plate 221 away from the guide rod, thus driving the scraper 21 to descend until the bottom of the scraper 21 is in contact with the surface of the fabric to be embroidered.

[0086] Once the bottoms of both scrapers 21 are in contact with the surface of the fabric to be embroidered, the micro motor 200 is started by the controller, causing its output end to rotate clockwise. Since both first cylindrical gears 202 are fixedly connected to the first rotating shaft 201, and the first rotating shaft 201 is rotatably connected to the bottom of the liner 1, the output end of the micro motor 200 is fixedly connected to one end of the first rotating shaft 201 through a coupling, thereby driving the two first gears to rotate clockwise.

[0087] When the two first gears rotate clockwise, both first racks 223 are slidably connected to the liner 1, and each first rack 223 is meshed with a first cylindrical gear 202. The ends of the two first racks 223 away from the first cylindrical gear 202 are fixedly connected to the bottom of the first connecting plate 220. The top of the first connecting plate 220 and the bottom of the lifting plate 221 are fixedly connected to the two ends of the electric push rod 222, respectively. Each scraper 21 is fixedly connected to the end of the lifting plate 221 away from the guide rod. Since the two first cylindrical gears 202 are also meshed with the other two first racks 223, they cooperate with another sliding component 22 to make the two scrapers 21 slide horizontally from the middle of the liner 1 to both ends, thereby smoothing out the wrinkles on the entire surface of the fabric to be embroidered and achieving the wrinkle removal effect. When the scraper 21 slides to the limit groove on the limit block 224, it is limited, thereby pressing one long side of the fabric to be embroidered.

[0088] When two of the first racks 223 slide away from the end of the liner 1, each buffer spring 12 is sleeved with a limiting rod, the slide plate 13 is fixedly connected to two of the first racks 223, and each limiting rod is slidably connected to the slide plate 13. The outer wall of the limiting plate and the outer wall of the slide plate 13 respectively abut against the two ends of each buffer spring 12, thereby causing the two buffer springs 12 to change from the initial state to the taut state for buffering, ensuring that the bottom of the scraper 21 slowly scrapes the wrinkles on the surface of the fabric to be embroidered, preventing omissions and improving the wrinkle removal effect.

[0089] When one of the first racks 223 slides away from the end of the liner 1, since the second rack 300 is fixedly connected to the bottom of the first rack 223, the second cylindrical gear 301 and the first bevel gear 302 are both fixedly connected to the first hinge shaft, the second rack 300 is meshed with the second cylindrical gear 301, the second bevel gear 303 is fixedly connected to the second hinge shaft, the first bevel gear 302 and the second bevel gear 303 are meshed, and the first bevel gear 302 is smaller than the second bevel gear 303, thereby driving the second bevel gear 303 to rotate counterclockwise.

[0090] When the second bevel gear 303 rotates counterclockwise, the turntable 310 is fixedly connected to the end of the second hinge shaft away from the second bevel gear 303, one end of the connecting rod 311 is hinged to the outer wall of the turntable 310, the insert rod 312 is fixedly connected to the outer wall of the end of the connecting rod 311 away from the turntable 310, and the swing rod 313 is fixedly connected to one of the rotating rods 11 near the connecting rod 311. The outer wall of the swing rod 313 is designed with a relief groove for the insert rod 312 to slide, so that when the connecting rod 311 rotates counterclockwise, the resistance force generated by the insert rod 312 rotating inside the relief groove drives the swing rod 313 to rotate. Since each scraper 21 is fixedly connected to the rotating rod 11 through the second connecting plate, the scraper 21 is driven to rotate counterclockwise until a short side of the fabric to be embroidered is pressed tightly.

[0091] While one short side of the fabric to be embroidered is pressed, one of the synchronous wheels 323 is fixedly connected to one of the rotating rods 11 near the connecting rod 311, the third hinge shaft is rotatably connected to one of the support blocks, another synchronous wheel 323 is fixedly connected to the third hinge shaft, the two synchronous wheels 323 are connected by a belt 53, the third cylindrical gear 320 is fixedly connected to the third hinge shaft, the fourth cylindrical gear 321 is fixedly connected to one end of another rotating rod 11, and the third cylindrical gear 320 and the fourth cylindrical gear 321 mesh with each other, thereby driving another scraper 21 to rotate clockwise, simultaneously pressing the other short side of the fabric to be embroidered.

[0092] When the two scraper rods 21 slide from the middle of the top of the backing plate 1 into the limiting grooves of the two limiting blocks 224 at both ends of the top of the backing plate 1, the two position sensors 400 detect the positioning information of the two scraper rods 21 and send it to the controller. The controller then activates the two laser pointers 42 to emit two mutually perpendicular lasers. Since each laser pointer 42 is fixedly connected to a slider 410, the position of the intersection point can be arbitrarily adjusted in conjunction with the sliders 410 on the two screw slides 41. This allows the embroidery needle to be inserted according to the intersection point position, satisfying the precise positioning of different needle insertion positions and facilitating the embroidery of patterns in different positions on the fabric surface.

[0093] Example 2

[0094] In order to meet the positioning requirements of the initial needle placement position of several different small patterns within a single large pattern, the present invention designs another technical solution.

[0095] Reference Figure 8 , Figure 9 and Figure 10 As shown, a drive wheel 5 is fixedly mounted on the outer wall of another rotating rod 11, and a first scale plate 51 is rotatably mounted on the outer wall of the liner 1 via a second rotating shaft 50. A driven wheel 52 is fixedly mounted on one of the second rotating shafts 50 near the fourth cylindrical gear 321. A belt 53 is fitted between the drive wheel 5 and the driven wheel 52, and the drive wheel 5 is smaller than the driven wheel 52. A third bevel gear 54 is fixedly mounted on the end of the second rotating shaft 50 away from the driven wheel 52. In the actual embroidery process, some patterns are not complete sets and may be composed of several patterns of different sizes forming a large pattern. The spacing between the several patterns of different sizes is different. This requires precise control of the position to re-place the needle when embroidering the next pattern after finishing the embroidery of each individual small pattern. When this situation occurs, since the other rotating rod 11 is fixedly connected to the drive wheel 5 and the driven wheel 52 is fixedly connected to the second rotating shaft 50, while one of the gears near the fourth cylindrical gear 321 rotates clockwise, the first scale plate 51 is rotated 90 degrees clockwise through the second rotating shaft 50, so that the side with the scale value faces upward.

[0096] Reference Figure 8 , Figure 9 and Figure 10As shown, a second scale plate 56 is rotatably mounted on the outer wall of the liner 1 via a third rotating shaft 55. A fourth bevel gear 57 is fixedly mounted on one end of the third rotating shaft 55. The third bevel gear 54 and the fourth bevel gear 57 are meshed together. When the first scale plate 51 rotates to the point where its scale value faces upward, since the second scale plate 56 is fixedly connected to the third rotating shaft 55 and the third bevel gear 54 and the fourth bevel gear 57 are meshed together, the liner 1 is rotatably connected to the second scale plate 56 via the third rotating shaft 55, thereby causing the second scale plate 56 to rotate counterclockwise by ninety degrees, so that the second scale plate 56 with its scale value... With the face rotated upwards, the lasers emitted by the two laser pointers 42 can fall horizontally above the first scale plate 51 and the second scale plate 56. When the two laser pointers 42 slide horizontally through the two lead screw slides 41, the first scale plate 51 and the second scale plate 56 can provide a sliding distance, which allows the operator to know the moving distance of the intersection of the two laser lines in a timely manner, that is, to know the moving distance of the needle position in a timely manner. This makes it convenient to accurately place the needle at the position of the next pattern after the previous pattern is finished, so as to achieve the embroidery of several patterns with different spacings, thereby improving the flexibility of the device.

Claims

1. A positioning device for embroidery on an embroidery machine, comprising a liner (1) for mounting on the garment frame of the embroidery machine, the top of the liner (1) having a groove, characterized in that: It also includes a controller, a wrinkle removal mechanism (2), a pressing mechanism (3), and a reference mechanism (4); The wrinkle removal mechanism (2) is located on the outer wall of the lining plate (1) to scrape the wrinkles on the surface of the fabric to be embroidered. The wrinkle removal mechanism (2) includes a drive assembly (20), two scrapers (21) and two sliding assemblies (22). The drive assembly (20) is located at the bottom of the lining plate (1), and the two sliding assemblies (22) are symmetrically arranged at both ends of the lining plate (1). Each scraper (21) is fixed on a sliding assembly (22). The pressing mechanism (3) is located on the outer wall of the lining plate (1) to fix the fabric to be embroidered. The pressing mechanism (3) includes a first transmission component (30), a traction component (31), a second transmission component (32) and two pressure rods (33). Four support blocks are symmetrically arranged at both ends of the lining plate (1). A positioning plate (10) is fixed between each pair of support blocks. A rotating rod (11) is provided between each pair of support blocks in the width direction. Each pressure rod (33) is fixed on the outer wall of a rotating rod (11) through a second connecting plate. The first transmission component (30) is located between the traction component (31) and the drive component (20). The traction component (31) is located between the first transmission component (30) and one end of one of the rotating rods (11). The second transmission component (32) is located between the two rotating rods (11). The reference mechanism (4) is located on the top of the liner (1) to locate the needle drop position. The reference mechanism (4) includes a sensing component (40), two lead screw slides (41), two laser pointers (42) and four first scale values ​​(43). The sensing component (40) and the two lead screw slides (41) are both located on the top of the liner (1). Each laser pointer (42) is slidably mounted on a lead screw slide (41) via a slider (410). The four first scale values ​​(43) are located on the side of the groove. The drive component (20), the sensing component (40), each laser pointer (42) and each sliding component (22) are electrically connected to the controller. Each sliding assembly (22) includes a first connecting plate (220), a lifting plate (221), an electric push rod (222), and two first racks (223). The two first racks (223) are slidably disposed on the outer wall of the liner (1). Each first rack (223) is meshed with a first cylindrical gear (202). The first connecting plate (220) is fixedly disposed at the end of the two first racks (223) away from the first cylindrical gear (202). The lifting plate (221) is slidably disposed on the first connecting plate (220) through two guide rods. At the top of the connecting plate (220), the electric push rod (222) is fixedly installed on the top of the first connecting plate (220), and its output end is fixedly connected to the bottom of the lifting plate (221). The lifting plate (221) has a U-shaped structure. Each scraper (21) is fixedly connected to the end of the lifting plate (221) away from the guide rod. The top of the liner (1) is symmetrically provided with two limit blocks (224). Each limit block (224) is provided with a limit groove for one end of the scraper (21) to be inserted. The electric push rod (222) is electrically connected to the controller. The first transmission assembly (30) includes a second rack (300), a second cylindrical gear (301), a first bevel gear (302), and a second bevel gear (303). The second rack (300) is fixedly disposed at the bottom of the first rack (223). The bottom of the liner (1) is rotatably provided with a first hinge shaft and a second hinge shaft. The second cylindrical gear (301) and the first bevel gear (302) are both fixedly disposed on the first hinge shaft. The second rack (300) meshes with the second cylindrical gear (301). The second bevel gear (303) is fixedly disposed on the second hinge shaft. The first bevel gear (302) and the second bevel gear (303) mesh with each other, and the first bevel gear (302) is smaller than the second bevel gear (303). The traction assembly (31) includes a turntable (310), a connecting rod (311), a plug rod (312), and a swing rod (313). The turntable (310) is fixed at one end of the second hinge shaft away from the second bevel gear (303). The connecting rod (311) is hinged on the outer wall of the turntable (310). The plug rod (312) is fixed on the outer wall of the connecting rod (311) away from the turntable (310). The swing rod (313) is fixed on one of the rotating rods (11) near the connecting rod (311). The outer wall of the swing rod (313) is provided with a clearance groove for the plug rod (312) to slide.

2. The positioning device for embroidery on an embroidery machine according to claim 1, characterized in that: The drive assembly (20) includes a micro motor (200), a first rotating shaft (201) and two first cylindrical gears (202). The first rotating shaft (201) is rotatably mounted on the bottom of the liner (1). The micro motor (200) is fixedly mounted on the bottom of the liner (1). Its output end is fixedly connected to one end of the first rotating shaft (201) through a coupling. Both gears are fixedly mounted on the first rotating shaft (201). The micro motor (200) is electrically connected to the controller.

3. The positioning device for embroidery on an embroidery machine according to claim 2, characterized in that: The second transmission assembly (32) includes a third cylindrical gear (320), a fourth cylindrical gear (321), a synchronous belt (322), and two synchronous pulleys (323). One of the synchronous pulleys (323) is fixedly mounted on one of the rotating rods (11) near the connecting rod (311). A third hinge shaft is rotatably mounted on the outer wall of one of the support blocks. The other synchronous pulley (323) is fixedly mounted on the third hinge shaft. The synchronous belt (322) is sleeved between the two synchronous pulleys (323). The third cylindrical gear (320) is fixedly mounted on the third hinge shaft. The fourth cylindrical gear (321) is fixedly mounted at one end of another rotating rod (11). The third cylindrical gear (320) and the fourth cylindrical gear (321) are meshed together. Two tensioning pulleys (324) are rotatably mounted on the bottom of the liner (1). The synchronous belt (322) is in contact with the outer edges of the two tensioning pulleys (324).

4. A positioning device for embroidery on an embroidery machine according to claim 3, characterized in that: The sensing component (40) includes two position sensors (400), which are symmetrically arranged at both ends of the top of the liner (1), and each position sensor (400) is electrically connected to the controller.

5. A positioning device for embroidery on an embroidery machine according to claim 4, characterized in that: The bottom of the liner (1) is fixed with two limiting rods by the mounting plate. Each limiting rod is fitted with a buffer spring (12) on its outer wall. A slide plate (13) is fixed between the two first racks (223). Each limiting rod is slidably connected to the slide plate (13). The outer wall of the limiting plate and the outer wall of the slide plate (13) respectively abut against the two ends of each buffer spring (12).

6. A positioning device for embroidery on an embroidery machine according to claim 5, characterized in that: Another rotating rod (11) has a driving wheel (5) fixed on its outer wall. The outer wall of the liner (1) has a first scale plate (51) rotatably mounted on the second rotating shaft (50). A driven wheel (52) is fixed on the second rotating shaft (50) near the fourth cylindrical gear (321). A belt (53) is fitted between the driving wheel (5) and the driven wheel (52). The driving wheel (5) is smaller than the driven wheel (52). A third bevel gear (54) is fixed at the end of the second rotating shaft (50) away from the driven wheel (52).

7. A positioning device for embroidery on an embroidery machine according to claim 6, characterized in that: A second scale plate (56) is provided on the outer wall of the liner (1) via a third rotating shaft (55). A fourth bevel gear (57) is fixed at one end of the third rotating shaft (55). The third bevel gear (54) and the fourth bevel gear (57) are meshed together.

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