A template machine with rotatable head

Abstract

The present application relates to the technical field of template machine, and particularly relates to a template machine with a rotatable head. The head structure and the underlying bottom thread mechanism can realize synchronous transmission, so that deviation between the needle and the bottom thread mechanism in sewing work is avoided, difference is not caused, and product quality is affected. The template machine with the rotatable head comprises a rack and a working platform arranged on the rack, the working platform is provided with a template driving mechanism and a sewing main machine, the sewing main machine comprises a material piercing mechanism, a thread lifting mechanism, a thread hooking mechanism and a thread cutting mechanism; a rotary table part is arranged at the lower part of the sewing main machine and is rotatably arranged on the rack; a circular mounting hole is arranged on the working platform, and the sewing main machine is arranged in the mounting hole; a table plate is arranged at the middle part of the sewing main machine, and the table plate and the side contour of the middle part of the sewing main machine are spliced into a circle; a rotary driving mechanism is further arranged at the lower part of the rack, which is used for driving the rotary table part of the sewing main machine to rotate, and the rotary table part drives the sewing main machine to rotate.

Description

Technical Field

[0001] This invention relates to the field of template machine technology, specifically to a template machine with a rotatable machine head. Background Technology

[0002] A template machine is an automated production device that uses software control to complete sewing work. The template machine is equipped with a template drive mechanism, which can drive the fabric to move in the X and Y axis directions, effectively improving production efficiency and product quality.

[0003] Traditional sewing machines typically only support sewing in the forward or backward direction. When sewing in the side direction, the supply of bobbin thread is affected, resulting in poor sewing quality.

[0004] Patent application CN201921090902.3 discloses a template sewing machine. The design features an independently designed bobbin thread structure at the bottom of the worktable, allowing the bobbin thread to rotate. When the template is sewn with its side facing the machine head, the program controls the bobbin thread unit to rotate by a corresponding angle, ensuring that the bobbin thread unit always faces the direction of the template's movement, thus solving the problem of poor sewing effect.

[0005] Current technology has the following shortcomings:

[0006] However, since the head structure of the template machine in the existing technology is fixed while the bottom thread unit is rotating, after the template machine has been used for a period of time, wear or deformation due to external forces will occur, resulting in a misalignment between the needle bar of the head and the bottom thread unit at the bottom.

[0007] When the difference in alignment between the needle tip and the bobbin thread unit exceeds a certain range, continuing sewing work greatly increases the likelihood of needle breakage, thus affecting production efficiency and product quality. Summary of the Invention

[0008] The purpose of this invention is to provide a template machine with a rotatable sewing head, so that the sewing head structure and the bottom thread unit below can achieve synchronous transmission, avoiding the offset between the needle and the bottom thread unit during sewing, which would cause differences and affect product quality.

[0009] The purpose of this invention is achieved as follows:

[0010] A template sewing machine with a rotatable sewing head includes a frame and a work platform mounted on the frame. The work platform is equipped with a template drive mechanism and a sewing main unit.

[0011] The sewing machine includes:

[0012] The piercing mechanism is used to drive the needle bar and the needle to pierce the sewing fabric;

[0013] A thread take-up mechanism, used to feed and retrieve the thread and tighten the stitches;

[0014] The thread hooking mechanism is used to hook the thread loop formed by the needle through the sewing material to form a stitch.

[0015] A thread-cutting mechanism, used to cut the thread after sewing is completed;

[0016] The sewing machine has a turntable at its lower part, which is rotatably mounted on the frame. The turntable supports the sewing machine. A circular mounting hole is provided on the work platform, into which the sewing machine is placed. A platform is provided in the middle of the sewing machine, and the platform and the side profile of the middle part of the sewing machine are spliced ​​together to form a circle. The platform is located in the mounting hole and is spliced ​​with the edge of the mounting hole.

[0017] The lower part of the frame is also provided with:

[0018] A rotary drive mechanism is used to drive the turntable of the sewing machine to rotate, and the turntable drives the sewing machine to rotate; the turntable is located below the work platform.

[0019] Preferably, a rotating seat is provided on the lower side of the turntable; the rotating seat is mounted on the frame, and the turntable is connected to the rotating seat;

[0020] The sewing machine includes:

[0021] The housing includes an upper shell and a lower base plate, wherein the upper shell and the lower base plate are either an integral structure or a separate structure;

[0022] A panel is disposed on the base plate; the panel is formed with a clearance groove, the shape of which matches the housing, so that the panel can cover the base plate; the panel and the base plate are spliced ​​together to form the platform.

[0023] The bobbin thread unit of the sewing machine is located below the table, so that the bobbin thread unit can rotate synchronously with the turntable.

[0024] Preferably, the turntable includes a turntable body connected to the lower part of the platform; a mounting cavity is formed between the turntable body and the platform, and the mounting cavity is used to set the bottom line unit, which can rotate together with the turntable body;

[0025] An open opening is formed on one side of the turntable body, and the bottom line unit is inserted into the turntable body through the open opening;

[0026] The turntable body is also formed with side part one, side part two and side part three. Side part one has a bearing plane formed on it. The bearing plane is used to set a flipping structure, and the platform is rotatably connected to the turntable body through the flipping structure.

[0027] Preferably, a central column is installed at the bottom of the turntable body, which passes through the rotating seat. The central column is used to connect the turntable body and the rotating seat, so that the turntable body is rotatably connected to the rotating seat. A gear part is formed on the central column.

[0028] A rotary drive motor is provided on one side of the rotating base, which is connected to a second gear section. The first gear section and the second gear section are connected by a synchronous belt.

[0029] Preferably, the panel has an inspection window with a cover plate, allowing access to the mounting cavity without removing the platform.

[0030] Preferably, the second side part is positioned opposite to the first side part. Both the first side part and the second side part are provided with a plurality of side wall reinforcing ribs. The side wall reinforcing ribs are provided with threaded surfaces, through which the turntable body can be fixed to the base plate.

[0031] The third side surface is curved, and the center of the curve is on the same straight line as the center of the mounting hole.

[0032] Preferably, the bottom of the turntable body is formed with a protrusion, and the gear part is formed with a groove that matches the protrusion, so that the protrusion can be placed into the groove.

[0033] Preferably, the sewing machine housing is provided with a presser foot lifting assembly, a trimming assembly, and a material insertion mechanism, wherein the material insertion mechanism includes:

[0034] A needle bar, on which an organic needle is mounted;

[0035] A transmission assembly, wherein the needle bar is connected to and can be driven by the transmission assembly;

[0036] The upper shaft motor is used to provide power to the transmission assembly;

[0037] The upper shaft motor is connected to a gear section three, and a timing belt two is fitted on the gear section three. The gear section three is connected to the gear shaft through the timing belt two.

[0038] The hook mechanism has a gear section four, and the gear shaft is connected to the gear section four.

[0039] Preferably, the edge-cutting mechanism and the upper shaft motor are respectively located at both ends of the housing.

[0040] Preferably, an external pressure foot assembly is provided on the outer side of the housing, the external pressure foot assembly comprising:

[0041] The outer pressure foot is disc-shaped, and a pinhole is formed at the bottom of the outer pressure foot for the needle bar to pass through.

[0042] A cylinder, used to drive the lifting and lowering of the outer pressure foot;

[0043] A connecting rod for connecting the cylinder and the outer pressure foot.

[0044] The outstanding and beneficial technical effects of this invention compared to the prior art are:

[0045] This technical solution miniaturizes the sewing machine head, allowing the head structure to be fully mounted on the sewing table and rotate with it. This enables the sewing machine and the bobbin thread to rotate synchronously, reducing misalignment between the needle and bobbin thread units during long-term use, extending product lifespan, and ensuring production quality. Attached Figure Description

[0046] Figure 1 This is a structural diagram of the present invention.

[0047] Figure 2 This is a schematic diagram showing the connection between the turntable and the sewing machine of the present invention.

[0048] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0049] Figure 4 This is a schematic diagram showing the connection between the turntable body and the rotating base of the present invention.

[0050] Figure 5 This is a cross-sectional view of the turntable body and the rotating seat of the present invention when connected.

[0051] Figure 6 This is an exploded view of the turntable body and rotating seat of the present invention when they are connected.

[0052] Figure 7 This is a structural diagram of the turntable body of the present invention.

[0053] Figure 8 This is a schematic diagram showing the connection between the turntable body and the platform of the present invention.

[0054] Figure 9 This is a schematic diagram of the sewing mechanism of the present invention.

[0055] Figure 10This is an assembly diagram of the sewing machine of the present invention.

[0056] Figure 11 This is a structural diagram of the feeding mechanism, the lifting pressure foot assembly, and the outer pressure foot assembly of the present invention.

[0057] Figure 12 This is a structural diagram of the external pressure foot assembly of the present invention.

[0058] Figure 13 This is a structural diagram of the pressure foot assembly of the present invention.

[0059] Figure 14 This is a structural diagram of the edge-cutting component of the present invention.

[0060] Reference numerals: 1. Frame; 11. Working platform; 12. Template drive mechanism; 13. Mounting hole; 14. Rotating seat;

[0061] 2. Turntable section;

[0062] 21. Platform; 211. Front panel; 212. Base plate; 213. Clearance groove; 214. Inspection window; 215. Cover plate; 216. Screw hole;

[0063] 22. Turntable body; 221. Side panel one; 222. Side panel two; 223. Side panel three; 224. Opening; 225. Mounting cavity; 226. Bearing plane; 227. Side wall reinforcing rib; 228. Threaded plane; 229. Protrusion;

[0064] 23. Central column; 231. Gear part one; 232. Groove; 233. Bearing one; 234. Bearing two;

[0065] 24. Rotary drive mechanism; 25. Rotary drive motor; 251. Gear section two; 252. Rotary support; 26. Synchronous belt one;

[0066] 3. Sewing machine main unit; 31. Machine housing; 32. Housing; 33. Lifting section; 34. Knife holder guide frame; 35. Slide rail; 36. Sliding block;

[0067] 4. Bottom line unit; 41. Thread cutting mechanism; 42. Thread hooking mechanism; 43. Gear section four; 44. Synchronous belt two; 45. Gear shaft;

[0068] 5. Flip structure;

[0069] 6. Feeding mechanism; 61. Needle bar; 62. Transmission assembly; 63. Upper shaft motor; 64. Gear section three; 65. Needle; 66. Thread take-up mechanism; 67. Ring groove;

[0070] 7. External pressure foot assembly; 71. External pressure foot; 72. Pinhole; 73. Cylinder; 74. Connecting rod one;

[0071] 8. Presser foot lifting assembly; 81. Inner presser foot drive motor; 82. Inner presser foot rod; 83. Inner presser foot;

[0072] 9. Edge trimming assembly; 91. Edge trimming assembly drive motor; 911. Crankshaft bushing; 912. Connecting rod II; 92. Tool holder; 93. Guide post; 94. Tool holder; 941. Fixed bracket; 942. Adjusting bracket; 95. Cutting blade; 96. Guide groove; 97. Adjusting groove; 98. Adjusting bolt; 99. Adjusting threaded hole. Detailed Implementation

[0073] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0074] like Figure 1 - Figure 6 As shown, a template machine with a rotatable sewing head includes a frame 1 and a work platform 11 mounted on the frame 1. The work platform 11 is equipped with a template drive mechanism 12 and a sewing main unit 3.

[0075] Sewing machine 3 includes:

[0076] The material-piercing mechanism 6 is used to drive the needle bar 61 and the needle 65 to pierce the sewing material;

[0077] The thread take-up mechanism 66 is used to feed and retrieve the sewing thread and tighten the stitches;

[0078] The thread hooking mechanism 42 is used to hook the thread loop formed by the needle 65 through the sewing material to form a stitch after the needle 65 carries the thread through the sewing material.

[0079] The thread-cutting mechanism 41 is used to cut the thread after sewing is completed. The thread-hooking mechanism 42 and the thread-cutting mechanism 41 together form the bottom thread unit 4.

[0080] In this embodiment, the thread take-up mechanism 66 is a thread take-up sleeve. The needle 65 has a ring groove 67 formed on it. The thread take-up mechanism 66 is sleeved in the ring groove 67 and can move together with the needle bar 61.

[0081] A turntable 2 is provided at the lower part of the sewing main unit 3. The turntable 2 is rotatably mounted on the frame 1 and is used to support the sewing main unit 3. A circular mounting hole 13 is provided on the work platform 11, and the sewing main unit 3 is placed into the mounting hole 13. A table plate 21 is provided in the middle of the sewing main unit 3, and the table plate 21 and the side contour of the middle part of the sewing main unit 3 are spliced ​​to form a circle. The table plate 21 is located in the mounting hole 13 and is spliced ​​with the edge of the mounting hole 13.

[0082] The lower part of rack 1 is also equipped with:

[0083] The rotary drive mechanism 24 is used to drive the turntable part 2 of the sewing host 3 to rotate. The turntable part 2 drives the sewing host 3 to rotate. The turntable part 2 is located below the work platform 11.

[0084] In this embodiment, the rotary drive mechanism 24 includes a rotary drive motor 25 and a timing belt 26. The power of the rotary drive motor 25 is transmitted to the turntable 2 via the timing belt 26, causing the turntable 2 to rotate. Furthermore, the turntable 2 does not rotate continuously in a single direction, but rather performs a reciprocating rotation, thus reducing the probability of collisions between the wiring and other equipment or items within the baseline unit 4 and improving the stability of the template machine during operation.

[0085] In this technical solution, the rotatable sewing host 3 can change its direction during operation, better responding to the feeding direction of the template drive mechanism 12, reducing the offset between the needle 65 and the bobbin thread unit 4 after long-term use, and extending the product's service life. The synchronous belt 26 can also quickly and accurately change the direction of rotation, making the template machine more precise during operation.

[0086] like Figure 1 - Figure 8 As shown, a rotating seat 14 is provided on the lower side of the turntable part 2. The rotating seat 14 is mounted on the frame 1, and the turntable part 2 is connected to the rotating seat 14.

[0087] Sewing machine 3 includes:

[0088] The housing 31 includes an upper shell 32 and a lower base plate 212. As a preferred embodiment, the upper shell 32 and the lower base plate 212 can be an integral structure or separate structures. In this embodiment, the shell 32 and the base plate 212 are integrally formed.

[0089] A panel 211 is mounted on a base plate 212. The panel 211 has a recessed groove 213, the shape of which matches the housing 31, allowing the panel 211 to cover the base plate 212. The panel 211 and base plate 212 are joined to form a platform 21. The panel 211 is positioned above the base plate 212, and its shape matches the mounting holes 13, maximizing the coverage of the mounting holes 13 and reducing the entry of debris or dust into the mounting cavity 225. When the platform 21 is mounted on the work platform 11, the panel 211 can be mounted on the base plate 212, and it covers the screw holes 216. Therefore, the base plate 212 cannot be moved or flipped without removing the panel 211.

[0090] After the base plate 212 is installed into the mounting hole 13, a large amount of empty space is formed between the edge of the base plate 212 and the mounting hole 13. The panel 211 can effectively cover these control areas, and the upper surface of the panel 211 is also flatter. When the template drive mechanism 12 moves the fabric, it can effectively ensure the smooth movement of the fabric and avoid the fabric from being hooked, which would affect the processing effect and efficiency of the product.

[0091] Furthermore, after the base plate 212 is installed into the mounting hole 13, a portion of the projection of the housing 31 onto the work platform 11 will extend beyond the mounting hole 13. A raised portion 33 is formed in the portion of the housing 31 extending beyond the mounting hole 13. A gap of a certain distance is formed between the raised portion 33 and the work platform 11 to prevent contact between the housing 31 and the work platform 11 when the housing 31 rotates with the base plate 212, thus avoiding interference with the rotation of the sewing machine 3 and effectively preventing wear between the housing 31 and the work platform 11.

[0092] The bobbin thread unit 4 of the sewing machine 3 is located below the table 21, so that the bobbin thread unit 4 can rotate synchronously with the turntable 2.

[0093] Since the bobbin thread unit 4 and the sewing machine 3 can rotate synchronously, the frequent rotation of the sewing machine 3 relative to the bobbin thread unit 4 during long-term use can be avoided, which would cause the needle 65 and the bobbin thread unit 4 to deviate and produce an alignment difference. This effectively extends the service life of the equipment and ensures the quality of processing.

[0094] like Figure 1 - Figure 8 As shown, the turntable 2 includes a turntable body 22, which is connected to the bottom of the table plate 21; an installation cavity 225 is formed between the turntable body 22 and the table plate 21, and the bobbin thread unit 4 is installed in the installation cavity 225. When the machine housing 31 rotates with the table plate 21, the bobbin thread unit 4 installed in the installation cavity 225 will also rotate with the turntable 2, thereby realizing the synchronous rotation of the sewing machine 3 and the bobbin thread unit 4.

[0095] like Figure 1 , Figure 6 As shown, an opening 224 is formed on one side of the turntable body 22, through which the bottom line unit 4 is inserted into the mounting cavity 225 of the turntable body 22. The upper end of the bottom line unit 4 is fixed to the lower side of the platform 21. The opening 224 facilitates the installation of the bottom line unit 4 and expands the applicability of this technical solution. Different models and bottom line units 4 can be installed in the mounting cavity 225 without affecting the rotation of the turntable body 22.

[0096] The turntable body 22 is also formed with side part 1 221, side part 222 and side part 3 223. Side part 1 221 has a bearing plane 226 formed on it. The bearing plane 226 is used to set the flipping structure 5. The platform 21 is rotatably connected to the turntable body 22 through the flipping structure 5.

[0097] The base plate 212 is connected to the turntable body 22. In this embodiment, the base plate 212 is also formed with three screw holes 216. The base plate 212 is screwed to the turntable body 22 through the screw holes 216. At the same time, the base plate 212 and the turntable body 22 are also connected by a flip structure 5. After unscrewing the screws in the screw holes 216 used to screw the base plate 212 and the turntable body 22, the base plate 212 can be rotated through the flip structure 5.

[0098] The sewing host 3 is mounted on the base plate 212. When the turntable body 22 rotates, the base plate 212 can drive the sewing host 3 to rotate together.

[0099] Furthermore, in this embodiment, the flipping structure 5 is a hinge that hinges the platform 21 to the turntable body 22, so that the platform 21 can be flipped into the mounting cavity 225 without removing the turntable part 2 from under the working platform 11, which facilitates installation and subsequent maintenance.

[0100] like Figure 1 - Figure 8 As shown, a central column 23 is installed at the bottom of the turntable body 22, passing through the rotating seat 14. The central column 23 connects the turntable body 22 and the rotating seat 14, rotatably connecting the turntable body 22 to the rotating seat 14. A gear portion 231 is formed on the central column 23. Bearings 233 and 234 are installed inside the rotating seat 14, with bearing 233 located at the upper end and bearing 234 located at the bottom inside the rotating seat 14. The dimensions of bearings 233 and 234 match those of the central column 23. When the central column 23 is inserted into the rotating seat 14, bearings 233 and 234 ensure normal rotation of the central column 23. Simultaneously, bearings 233 and 234 restrict the position of the upper and lower ends of the central column 23, ensuring that the central column 23 is vertically positioned within the rotating seat 14 and guaranteeing the normal operation of the turntable 2.

[0101] A gear portion 231 is formed on the central column 23. The rotary drive motor 25 is located on one side of the rotating seat 14, and a bushing is fitted on the motor shaft of the rotary drive motor 25. A gear portion 251 is formed on the periphery of the bushing.

[0102] The gear section 231 and the gear section 251 are connected by a timing belt 26. The timing belt 26 enables the rotary drive motor 25 to drive the center column 23 to rotate. When the center column 23 rotates, the turntable body 22 fixed on the center column 23 will also rotate synchronously with the center column 23.

[0103] A rotary support 252 is provided at the upper end of the rotating base 14. The rotary support 252 is located between the gear part 231 and the rotating base 14, and the central column 23 passes through the rotary support 252 and enters the rotating base 14. The rotary drive motor 25 is fixed on the other end of the rotary support 252. The rotary drive motor 25 passes through the rotary support 252, so that the gear part 231 and the gear part 251 are located on the same side of the rotary support 252, which facilitates the connection of the gear part 231 and the gear part 251 by the timing belt 26.

[0104] As a preferred embodiment, the rotary support 252 can also be integrally formed with the rotating seat 14.

[0105] like Figure 1 - Figure 8 As shown, the panel 211 has an inspection window 214. When the panel 211 covers the base plate 212, the area corresponding to the inspection window 214 is an empty area, so that the installation cavity 225 can be directly accessed through the inspection window 214.

[0106] The inspection window 214 is equipped with a cover plate 215, which can be fixed to the panel 211 by means of hinge, screw, or snap-fit. The cover plate 215 allows observation of the interior of the mounting cavity 225 without removing the panel 211, facilitating inspection and maintenance at any time and extending the service life of the equipment.

[0107] like Figure 1 - Figure 8 As shown, side part 222 is positioned opposite to side part 221, and both side part 221 and side part 222 are provided with side wall reinforcing ribs 227. In this embodiment, since side part 221 is provided with a bearing plane 226 for mounting the flip structure 5, side part 221 is provided with only one side wall reinforcing rib 227, while side part 222 is provided with two side wall reinforcing ribs 227.

[0108] Each side wall reinforcing rib 227 has a threaded surface 228 formed on it. The position of the threaded surface 228 corresponds to the threaded hole 216. The turntable body 22 can be threaded onto the base plate 212 through the threaded surface 228.

[0109] Side part 223 is curved, and the center of the curve is on the same straight line as the center of the mounting hole 13. So when the turntable body 22 rotates, the projection of the motion trajectory of side part 223 can match the mounting hole 13, reducing possible collisions between components and ensuring stable operation of the equipment.

[0110] like Figure 1 - Figure 7 As shown, the bottom of the turntable body 22 has a protruding part 229, and the gear part 231 has a groove 232 that matches the protruding part 229, so that the protruding part 229 can be placed into the groove 232. After the protruding part 229 and the groove 232 are screwed together, they are fixed, so that the turntable body 22 can rotate with the same angular velocity as the central column 23.

[0111] The shape of the protrusion 229 matches the groove 232, making it easier to accurately position the turntable body 22 above the rotating seat 14 during assembly.

[0112] like Figure 1 - Figure 13 As shown, the sewing machine 3 also has a presser foot assembly 8, a trimming assembly 9 and a needle-punching mechanism 6 inside the housing 31. Sewing can be made by the cooperation between the presser foot assembly 8, the trimming assembly 9 and the needle-punching mechanism 6.

[0113] The feeding mechanism 6 includes:

[0114] A needle bar 61 is provided with a machine needle 65, which can move together with the needle bar 61.

[0115] The needle bar 61 is connected to the transmission assembly 62 and can be driven by the transmission assembly 62 to perform reciprocating linear motion along the numerical direction.

[0116] The upper shaft motor 63 provides power to the transmission assembly 62. The transmission assembly 62 can convert the horizontal power output by the upper shaft motor 63 into vertical power, and drive the needle bar 61 to perform sewing actions.

[0117] The upper shaft motor 63 is connected to a gear section 64, and a timing belt 44 is fitted on the gear section 64. The gear section 64 is connected to the gear shaft 45 through the timing belt 44. The timing belt 44 can ensure that the gear shaft 45 and the upper shaft motor 63 rotate at the same angular velocity.

[0118] The hooking mechanism 42 has a gear section 43, and a gear shaft 45 is connected to the gear section 43. The power generated by the upper shaft motor 63 can be transmitted to the hooking mechanism 42 through the gear shaft 45, thereby driving the hooking mechanism 42 to work.

[0119] like Figure 1 - Figure 13 As shown, since the housing 31 is only connected to the base plate 212 at its bottom, the entire housing 31 effectively forms a lever structure. When the presser foot assembly 8, the edge trimming assembly 9, and the material feeding mechanism 6 are installed inside the housing 31, it is highly susceptible to tilting or breakage due to uneven force distribution at both ends. By placing the edge trimming assembly 9 and the upper shaft motor 63 at opposite ends of the housing 31, the weight of the edge trimming assembly 9 can be effectively used to balance the weight of the upper shaft motor 63, preventing the housing 31 from tilting and improving the stability of the sewing machine 3.

[0120] The presser foot lifting assembly 8 includes an inner presser foot drive motor 81, an inner presser foot rod 82, and an inner presser foot 83, with the inner presser foot 83 connected to the inner presser foot rod 82. The projection of the inner presser foot drive motor 81 is located at the connection between the machine housing 31 and the table 21, that is, the inner presser foot drive motor 81 is positioned between the edge trimming assembly 9 and the upper shaft motor 63, so that the presser foot lifting assembly 8 does not excessively affect the internal stability of the sewing machine 3.

[0121] like Figure 1 - Figure 13 As shown, an external pressure foot assembly 7 is provided on the outer side of the housing 31. The external pressure foot assembly 7 includes:

[0122] The outer presser foot 71 is disc-shaped. Because it functions like a large disc, its bottom surface has a larger contact area with the work platform 11, effectively holding the fabric in place and preventing it from shifting. When the template drive mechanism 12 moves the fabric, it may not lie flush against the surface of the work platform 11; it may bulge slightly, creating a distance between the fabric and the platform. The bottom of the disc-shaped outer presser foot 71 is curved. When the fabric contacts the presser foot 71, the curved surface presses it against the work platform 11, ensuring the fabric remains flat and facilitating the sewing operation of the needle 65, thus improving the quality of the finished product. The bottom of the outer presser foot 71 has a needle hole 72 for the needle bar 61 to pass through and perform sewing on the fabric.

[0123] Cylinder 73 is used to drive the lifting and lowering of the outer pressure foot 71.

[0124] Connecting rod 74 is used to connect cylinder 73 and external pressure foot 71. When cylinder 73 works, cylinder 73 will drive connecting rod 74 to reciprocate in the vertical direction, and through connecting rod 74, it will drive external pressure foot 71 to perform reciprocating motion together.

[0125] The inner presser foot 83 is positioned corresponding to the needle hole 72. After the needle 65 passes through the inner presser foot 83, it can continue to pass through the needle hole 72 to perform the sewing action.

[0126] like Figure 2 , Figure 3 , Figure 9 and Figure 14 As shown, the edge-cutting component 9 includes:

[0127] The edge trimming assembly drive motor 91 is mounted on the housing 31. A crankshaft sleeve 911 is sleeved on the motor shaft of the edge trimming assembly drive motor 91. The edge trimming assembly drive motor 91 is used to provide power to the edge trimming assembly 9.

[0128] A cutter bar 92 is provided with a cutter 95, which is used to perform the cutting work;

[0129] Connecting rod 912 connects crankshaft sleeve 911 and tool holder 92, and transmits the power generated by the cutting assembly drive motor 91 to tool holder 92.

[0130] The knife holder guide frame 34 is set inside the sewing main unit 3 and has a vertical groove 35, in which a slider 36 is set.

[0131] A guide post 93 extends from the upper end of the cutter bar 92. The guide post 93 is connected to the slider 36, and one end of the connecting rod 912 is sleeved on the outside of the guide post 93. When the cutting assembly drive motor 91 starts, the connecting rod 912 will drive the guide post 93 to move. However, since one end of the guide post 93 is connected to the slider 36, and the slider 36 is restricted by the slide groove 35, the slider 36 can only reciprocate in the up and down direction.

[0132] Since the slider 36 is connected to the guide post 93, when the guide post 93 is driven to move by the connecting rod 912, the slider 36 simultaneously restricts the horizontal displacement of the guide post 93, thereby driving the cutter bar 92 to rise and fall vertically, while reducing the horizontal sway of the cutter bar 92 and improving the accuracy of the cutter 95.

[0133] When the cutting assembly drive motor 91 starts, the crank sleeve 911 on the motor shaft also rotates, driving the guide post 93 to move. Since one end of the guide post 93 is connected to the slider 36 located in the tool holder guide frame 34, the guide post 93 can only move in the direction of the tool holder guide frame 34.

[0134] The other end of the guide post 93 is connected to the blade shank 92 of the edge cutting assembly 9. Therefore, when the guide post 93 is driven by the edge cutting assembly drive motor 91 and starts to move, it will drive the blade shank 92 to move together along the direction of the blade holder guide frame 34, thereby realizing the transmission of the power generated by the edge cutting assembly drive motor 91 to the edge cutting assembly 9.

[0135] The lower end of the tool holder 92 is connected to a tool post 94, which includes a fixed bracket 941 and an adjusting bracket 942. The fixed bracket 941 is installed at the lower end of the tool holder 92, and the top end of the adjusting bracket 942 is formed with a guide groove 96 that is adapted to the fixed bracket 941. The adjusting bracket 942 is assembled onto the fixed bracket 941 through the guide groove 96.

[0136] The blade holder 94 is used to connect the blade bar 92 and the cutter 95. One end of the fixed bracket 941 is connected to the bottom end of the blade bar 92. The top end of the adjusting bracket 942 is formed with a guide groove 96 that is adapted to the fixed bracket 941. The adjusting bracket 942 is assembled on the other end of the fixed bracket 941 through the guide groove 96.

[0137] Furthermore, the surface of the adjusting bracket 942 has an adjusting groove 97, and the adjusting bolt 98 passes through the adjusting groove 97 to screw the fixed bracket 941 and the adjusting bracket 942 into one piece; a cutter 95 is installed at the lower part of the adjusting bracket 942.

[0138] During operation, the position of the adjusting bolt 98 passing through the adjusting groove 97 can be changed to move the adjusting bracket 942, thereby adjusting the position of the cutter 95 in the left and right directions.

[0139] The adjusting bracket 942 has several adjusting threaded holes 99. By changing the screw position of the cutter 95, the vertical position of the cutter 95 can be finely adjusted. The cutter 95 is fixed on the adjusting bracket 942, allowing it to move together with the cutting assembly 9. During operation, because the upper end of the cutting assembly 9 is restricted by the blade holder guide 34, it will not easily move in the front-to-back direction, thus making the positioning of the cutter 95 more precise.

[0140] like Figure 1 and Figure 2 As shown, the width of the fixing bracket 941 is less than the distance between the needle bar 61 and the inner pressure foot bar 82, so that the fixing bracket 941 extends out from between the needle bar 61 and the inner pressure foot bar 82.

[0141] Because a separate edge-cutting component drive motor 91 is used, the transmission between the edge-cutting component 9 and other mechanisms is separated, reducing mutual interference. The controller can synchronously send signals to the edge-cutting component drive motor 91 and other drive motors, achieving synchronization of presser foot lifting, thread-piercing, and edge-cutting actions, thus improving the accuracy and stability of the sewing machine during operation.

[0142] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A template machine with a rotating head, comprising a frame (1) and a work platform (11) mounted on the frame (1), wherein a template driving mechanism (12) and a sewing host (3) are mounted on the work platform (11), characterized in that: The sewing machine (3) includes: The piercing mechanism (6) is used to drive the needle bar (61) and the needle (65) to pierce the sewing material; The thread-hooking mechanism (42) is used to cooperate with the material-piercing mechanism (6) to form a sewing stitch; A thread take-up mechanism (66) is used to feed and retrieve the thread and tighten the stitches; A thread-cutting mechanism (41) is used to cut the thread after sewing is completed; The housing (31) includes an upper housing (32) and a lower base plate (212), wherein the upper housing (32) and the lower base plate (212) are an integral structure or a separate structure; A panel (211) is disposed on the base plate (212); the panel (211) is formed with a relief groove (213), the shape of which matches the shape of the housing (31) so that the panel (211) can cover the base plate (212); the panel (211) and the base plate (212) are spliced ​​together to form a table (21); a turntable (2) is provided at the lower part of the sewing machine (3), and the turntable (2) is rotatably disposed on the frame. (1) The turntable (2) is used to support the sewing machine (3); a circular mounting hole (13) is provided on the work platform (11), and the sewing machine (3) is placed in the mounting hole (13); a table plate (21) is provided in the middle of the sewing machine (3), and the table plate (21) and the side contour of the middle part of the sewing machine (3) are spliced ​​into a circle; the table plate (21) is located in the mounting hole (13) and spliced ​​with the edge of the mounting hole (13); A rotating seat (14) is provided on the lower side of the turntable (2); the rotating seat (14) is mounted on the frame (1), the turntable (2) is connected to the rotating seat (14), the hooking mechanism (42) and the cutting mechanism (41) form the bobbin unit (4), the bobbin unit (4) of the sewing host (3) is located below the table (21), so that the bobbin unit (4) can rotate synchronously with the turntable (2); The turntable (2) includes a turntable body (22) connected to the lower part of the platform (21); a mounting cavity (225) is formed between the turntable body (22) and the platform (21), and the mounting cavity (225) is used to house the bottom line unit (4). The bottom line unit (4) can rotate with the turntable body (22). The panel (211) has an inspection window (214), and a cover plate (215) is provided on the inspection window (214). The bottom line unit (4) can be accessed through the inspection window (214) without removing the platform (21). The mounting cavity (225); an open opening (224) is formed on one side of the turntable body (22), and the bottom line unit (4) is inserted into the turntable body (22) through the open opening (224). The turntable body (22) is also formed with side part one (221), side part two (222) and side part three (223). A bearing plane (226) is formed on the side part one (221), and a flipping structure (5) is set on the bearing plane (226). The platform (21) is rotatably connected to the turntable body (22) through the flipping structure (5). The sewing machine (3) has a presser foot assembly (8), a trimming assembly (9), and a fabric insertion mechanism (6) on its housing (31). The fabric insertion mechanism (6) includes a needle bar (61), a transmission assembly (62), and an upper shaft motor (63). The needle bar (61) is equipped with a needle (65). The needle bar (61) is connected to the transmission assembly (62) and can be driven by the transmission assembly (62). The upper shaft motor (63) is used to provide power to the transmission assembly (62). The upper shaft motor (63) is connected to a gear part three (64). The gear part three (64) is fitted with a synchronous belt two (44), and the gear part three (64) is connected to the gear shaft (45) through the synchronous belt two (44). The thread hooking mechanism (42) is formed with a gear part four (43), and the gear shaft (45) is connected to the gear part four (43). The edge-cutting assembly (9) and the upper shaft motor (63) are respectively located at both ends of the housing (31). The weight of the edge-cutting assembly (9) is used to balance the weight of the upper shaft motor (63) to prevent the housing (31) from tilting. The lower part of the frame (1) is also provided with: A rotary drive mechanism (24) is used to drive the turntable part (2) of the sewing host (3) to rotate, and the turntable part (2) drives the sewing host (3) to rotate; the turntable part (2) is located below the work platform (11).

2. A template machine with a rotating head as described in claim 1, characterized in that: A central column (23) is installed at the bottom of the turntable body (22), which passes through the rotating seat (14). The central column (23) is used to connect the turntable body (22) and the rotating seat (14) to rotatably connect the turntable body (22) to the rotating seat (14). A gear part (231) is formed on the central column (23). A rotary drive motor (25) is provided on one side of the rotating seat (14), which is connected to a gear part two (251). The gear part one (231) and the gear part two (251) are connected by a synchronous belt one (26).

3. A template machine with a rotating head as described in claim 1, characterized in that: The second side part (222) is positioned opposite to the first side part (221). Both the first side part (221) and the second side part (222) are provided with a plurality of side wall reinforcing ribs (227). The side wall reinforcing ribs (227) are provided with threaded surfaces (228). The turntable body (22) can be fixed to the base plate (212) through the threaded surfaces (228). The side part 3 (223) is arc-shaped, and the center of the arc is on the same straight line as the center of the mounting hole (13).

4. A template machine with a rotating head as described in claim 2, characterized in that: The bottom of the turntable body (22) has a protruding part (229) and the gear part (231) has a groove (232) that matches the protruding part (229) so that the protruding part (229) can be placed into the groove (232).

5. A template machine with a rotating head as described in claim 1, characterized in that: An external pressure foot assembly (7) is provided on the outside of the housing (31), the external pressure foot assembly (7) comprising: The outer pressure foot (71) is disc-shaped, and a pinhole (72) is formed at the bottom of the outer pressure foot (71). The pinhole (72) is used for the needle bar (61) to pass through. A cylinder (73) is used to drive the lifting and lowering of the outer pressure foot (71); A connecting rod (74) is used to connect the cylinder (73) and the outer pressure foot (71).

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