A gantry-type numerical control machine tool for cutting the soles of shoes

Abstract

The present invention discloses a gantry-type cutting numerical control machine tool for sole sewing, which comprises a frame. A Y-axis controllable sliding frame is arranged on the frame. A first upper X-axis controllable sliding frame and a first lower X-axis controllable sliding frame are arranged on the Y-axis controllable sliding frame. A fabric channel is arranged on the Y-axis controllable sliding frame. A first wire storage cylinder driven by a first servo motor is arranged on the first upper X-axis controllable sliding frame. A second wire storage cylinder driven by a second servo motor is arranged on the first lower X-axis controllable sliding frame. A metal cutting wire is wound between the first wire storage cylinder and the second wire storage cylinder. This gantry-type cutting numerical control machine tool for sole sewing, in cooperation with a control program, can conveniently and quickly cut fabrics into sole shapes, is suitable for cutting multi-layer thick fabrics, saves time and effort, and can complete sole cutting with high quality and high efficiency, solving the defects of low efficiency and inconsistent quality in traditional manual sole sewing at present.

Description

Technical Field

[0001] The present invention belongs to the technical field of sole sewing equipment, and specifically relates to a gantry-type sole sewing and cutting numerical control machine tool. Background Art

[0002] Since the first appearance of cloth shoes in the history of human civilization more than 3,000 years ago, cloth shoes have been loved by people from ancient times to the present because of their relatively soft, comfortable, light, warm in winter, and breathable in summer characteristics. Because of the complex workmanship and the special manufacturing method that relies entirely on manual production, the thousand-layer sole cloth shoes were once replaced by shoes produced by the modern chemical industry and leather industry. However, due to their advantages of softness, comfort, lightness, breathability, and warmth, people are still reluctant to part with them. As a result, there are many cloth shoes on the market. The soles of the real thousand-layer sole cloth shoes have a relatively thick total thickness due to multiple layers of cloth, resulting in a large labor intensity and long time consumption for sole sewing. It takes up to 2 days to sew the sole of a pair of thousand-layer sole cloth shoes, with low efficiency. Moreover, the uniformity of the needle marks in manual sole sewing is poor, and the tightness of the sewing thread varies, resulting in a large quality difference. Due to such a situation, now only a few pairs are rarely produced by the few elderly people who have time, experience, and good health, and they cannot be provided in batches. The so-called thousand-layer sole cloth shoes circulating on the market are even incomparable with the traditional thousand-layer sole cloth shoes. Their soles are thin and hard, and they cannot achieve the purpose of long service life, softness, comfort, lightness, breathability, and warmth.

[0003] During the research and development of the numerical control machine tool for sole sewing, cutting methods similar to those in the clothing industry have been proposed, and attempts have been made to use cutting methods such as blade cutting, laser cutting, and water jet cutting. However, in blade cutting, due to the relatively thick cloth layer, the tool cannot turn smoothly, resulting in uneven arcs cut and easy breakage of the blade. In the case of laser cutting, due to the large thickness of the cloth layer, the cutting takes a long time. On the other hand, it may cause a fire hazard due to ignition of the cloth layer by high temperature. The water jet cutting contains cutting sand in the water, which will not only wet the cloth layer, but also make it difficult to recycle the cutting sand during water cutting. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a gantry-type sole sewing and cutting numerical control machine tool. This gantry-type sole sewing and cutting numerical control machine tool can control the cutting of the sole on the stacked cloth layers by a numerical control method with a diamond yarn, which is suitable for cutting multi-layer thick cloth, saving time and effort, and completing the sole cutting with high quality and high efficiency, solving the defects of low efficiency and inconsistent quality in traditional manual sole sewing.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: A gantry-type sole sewing cutting numerical control machine tool, including a machine frame, on which a Y-axis controllable sliding frame is provided. On the Y-axis controllable sliding frame, a first upper X-axis controllable sliding frame and a first lower X-axis controllable sliding frame are provided. A cloth passage is provided on the Y-axis controllable sliding frame. A first wire storage cylinder driven by a first servo motor is provided on the first upper X-axis controllable sliding frame. A second wire storage cylinder driven by a second servo motor is provided on the first lower X-axis controllable sliding frame. A metal cutting wire is wound between the first wire storage cylinder and the second wire storage cylinder. When this gantry-type sole sewing cutting numerical control machine tool is in use, the cloth passes through the cloth passage and between the first upper X-axis controllable sliding frame and the first lower X-axis controllable sliding frame. The rotation of the first wire storage cylinder and the second wire storage cylinder drives the metal cutting wire to cut. The cutting position of the metal cutting wire can be controlled by the movement of the X-axis controllable sliding frame and the Y-axis controllable sliding frame. With the cooperation of the control program, the cloth can be conveniently and quickly cut into a sole shape, which is suitable for cutting multi-layer thick cloth, saving time and effort, and completing the sole cutting with high quality and high efficiency, solving the defects of low efficiency and inconsistent quality in the current traditional manual sole sewing.

[0006] In the above technical solution, preferably, a first sliding platform is provided on the first upper X-axis controllable sliding frame. The first servo motor and the first wire storage cylinder are arranged on the first sliding platform. A first lead screw parallel to the first wire storage cylinder is rotatably provided on the first upper X-axis controllable sliding frame. A first gear speed regulating mechanism is linked to the rotating shaft of the first wire storage cylinder. The output shaft of the first gear speed regulating mechanism is driven by a synchronous belt with the first lead screw. The output shaft of the first gear speed regulating mechanism is in sliding key fit with the synchronous belt pulley thereon. The first sliding platform is in threaded fit with the first lead screw. When the first wire storage cylinder rotates one circle, the moving distance of the first sliding platform is equal to the wire diameter of the metal cutting wire. A second sliding platform is provided on the first lower X-axis controllable sliding frame. The second servo motor and the second wire storage cylinder are arranged on the second sliding platform. A second lead screw parallel to the second wire storage cylinder is rotatably provided on the first lower X-axis controllable sliding frame. A second gear speed regulating mechanism is linked to the rotating shaft of the second wire storage cylinder. The output shaft of the second gear speed regulating mechanism is driven by a synchronous belt with the second lead screw. The output shaft of the first gear speed regulating mechanism is in sliding key fit with the synchronous belt pulley thereon. The second sliding platform is in threaded fit with the second lead screw. When the second wire storage cylinder rotates one circle, the moving distance of the second sliding platform is equal to the wire diameter of the metal cutting wire. With this structure, during the cutting process when the first wire storage cylinder and the second wire storage cylinder rotate, the first sliding platform and the second sliding platform will move horizontally to keep the cutting position of the metal cutting wire unchanged, thereby improving the cutting accuracy.

[0007] In the above technical solution, preferably, a Y-axis slide rail is provided on the frame, the Y-axis controllable sliding frame is slidably arranged on the Y-axis slide rail, a Y-axis ball screw driven by a Y-axis servo motor is arranged in the Y-axis slide rail, and the Y-axis ball screw is in threaded cooperation with the Y-axis controllable sliding frame. The Y-axis servo motor and the Y-axis ball screw are used to drive the Y-axis controllable sliding frame to move, which is convenient to control and has high control precision.

[0008] In the above technical solution, preferably, a first air cylinder is provided on the first upper X-axis controllable sliding frame, a first pressing plate is provided on the first air cylinder, a first wire passing hole is provided on the first pressing plate, a first supporting platform is provided on the first lower X-axis controllable sliding frame, and a second wire passing hole is provided on the first supporting platform. The metal cutting wire passes through the first wire passing hole and the second wire passing hole. With this structure, the first pressing plate can be controlled to press down on the first supporting platform by the first air cylinder during cutting, preventing the fabric from moving during the cutting process.

[0009] In the above technical solution, preferably, an upper X-axis slide rail and a lower X-axis slide rail are provided on the Y-axis controllable sliding frame, the first upper X-axis controllable sliding frame is slidably arranged on the upper X-axis slide rail, a first upper X-axis ball screw is arranged in the upper X-axis slide rail, and the first upper X-axis ball screw is in threaded cooperation with the first upper X-axis controllable sliding frame; the first lower X-axis controllable sliding frame is slidably arranged on the lower X-axis slide rail, a first lower X-axis ball screw is arranged in the lower X-axis slide rail, and the first lower X-axis ball screw is in threaded cooperation with the first lower X-axis controllable sliding frame. The first upper X-axis ball screw and the first lower X-axis ball screw are driven by at least one first X-axis servo motor. With this structure, the first X-axis servo motor drive can drive the first upper X-axis ball screw and the first lower X-axis ball screw to rotate, thereby driving the first upper X-axis controllable sliding frame and the first lower X-axis controllable sliding frame to move in the X-axis direction.

[0010] In the above technical solution, preferably, the first upper X-axis ball screw and the first lower X-axis ball screw are driven by a synchronous belt, and one of the first upper X-axis ball screw and the first lower X-axis ball screw is connected to the first X-axis servo motor. With this structure, the rotation speeds of the first upper X-axis ball screw and the first lower X-axis ball screw are the same, thus ensuring that the first upper X-axis controllable sliding frame and the first lower X-axis controllable sliding frame can move synchronously.

[0011] In the above technical solution, preferably, a second upper X-axis controllable sliding frame and a second lower X-axis controllable sliding frame are arranged on the Y-axis controllable sliding frame. A machine head is arranged on the second upper X-axis controllable sliding frame. A sewing needle driven by a sewing needle servo motor is arranged on the machine head. A bottom shuttle mechanism is arranged on the second lower X-axis controllable sliding frame. A bobbin driven by a bobbin servo motor is arranged on the bottom shuttle mechanism. The sewing needle cooperates with the bobbin for sewing. With this structure, the sole can be automatically sewn before cutting through programming. The fabric passes through the fabric channel and between the second upper X-axis controllable sliding frame and the second lower X-axis controllable sliding frame. The sewing position can be controlled by the movement of the X-axis controllable sliding frame and the Y-axis controllable sliding frame. Cooperating with the control program, the sole can be sewn conveniently and quickly, and sewing and cutting can be completed at one time. Moreover, the running speed of the sewing needle and the running speed of the bobbin can be controlled by the sewing needle servo motor and the bobbin servo motor, and the running speed can be adjusted according to the fabric thickness. When the fabric is thicker, the running speed can be slowed down, and when the fabric is thinner, the running speed can be increased.

[0012] In the above technical solution, preferably, a second air cylinder is arranged on the second upper X-axis controllable sliding frame. A second pressing plate is arranged on the second air cylinder. A first through-needle hole is arranged on the second pressing plate. A second support platform is arranged on the second lower X-axis controllable sliding frame. A second through-needle hole is arranged on the first support platform. The first through-needle hole and the second through-needle hole are aligned with the sewing needle. With this structure, the second air cylinder can control the second pressing plate to press down on the second support platform to prevent the fabric from moving during sewing.

[0013] In the above technical solution, preferably, an upper X-axis slide rail and a lower X-axis slide rail are arranged on the Y-axis controllable sliding frame. The second upper X-axis controllable sliding frame is slidably arranged on the upper X-axis slide rail. A second upper X-axis ball screw is arranged in the upper X-axis slide rail. The second upper X-axis ball screw is in threaded cooperation with the second upper X-axis controllable sliding frame. The second lower X-axis controllable sliding frame is slidably arranged on the lower X-axis slide rail. A second lower X-axis ball screw is arranged in the lower X-axis slide rail. The second lower X-axis ball screw is in threaded cooperation with the second lower X-axis controllable sliding frame. The second upper X-axis ball screw and the second lower X-axis ball screw are driven by at least one second X-axis servo motor. With this structure, the second X-axis servo motor drive can drive the second upper X-axis ball screw and the second lower X-axis ball screw to rotate, thereby driving the second upper X-axis controllable sliding frame and the second lower X-axis controllable sliding frame to move in the X-axis direction.

[0014] In the above technical solution, preferably, the second upper X-axis ball screw and the second lower X-axis ball screw are driven by a synchronous belt, and one of the second upper X-axis ball screw and the second lower X-axis ball screw is connected to the second X-axis servo motor. With this structure, the rotation speeds of the second upper X-axis ball screw and the second lower X-axis ball screw are the same, so as to ensure that the second upper X-axis controllable sliding frame and the second lower X-axis controllable sliding frame can move synchronously.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When this gantry-type sole-stitching cutting numerical control machine is in use, the fabric passes through the fabric channel and between the first upper X-axis controllable sliding frame and the first lower X-axis controllable sliding frame. The rotation of the first wire storage cylinder and the second wire storage cylinder drives the metal cutting wire to cut. The cutting position of the metal cutting wire can be controlled by the movement of the X-axis controllable sliding frame and the Y-axis controllable sliding frame. With the cooperation of the control program, the fabric can be conveniently and quickly cut into a sole shape, which is suitable for cutting multi-layer thick fabrics, saving time and effort, and completing the sole cutting with high quality and high efficiency, solving the defects of low efficiency and inconsistent quality of traditional manual sole-stitching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the whole embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the whole embodiment of the present invention in another direction.

[0018] Figure 3 It is a schematic structural diagram of the first upper X-axis controllable sliding frame and the first lower X-axis controllable sliding frame in the embodiment of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the second upper X-axis controllable sliding frame and the second lower X-axis controllable sliding frame in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments: Refer to Figures 1 to 4 , a gantry-type sole-stitching cutting numerical control machine, including a machine frame 1. Two rows of parallel Y-axis slide rails 11 are arranged on the machine frame 1. The Y-axis controllable sliding frame 2 is slidably arranged on the Y-axis slide rails 11. Y-axis ball screws 13 are arranged in both of the two Y-axis slide rails 11. The two Y-axis ball screws 13 are driven by a synchronous belt, and one of the Y-axis ball screws 13 is connected to the Y-axis servo motor 12. The Y-axis ball screw 13 is in threaded cooperation with the Y-axis controllable sliding frame 2. The Y-axis controllable sliding frame 2 can be driven by the Y-axis servo motor 12 to move along the Y-axis direction.

[0021] On the Y-axis controllable sliding frame 2, there are an upper X-axis slide rail 22 and a lower X-axis slide rail 23. On the upper X-axis slide rail 22, a first upper X-axis controllable sliding frame 3 and a second upper X-axis controllable sliding frame 5 are slidably arranged. Inside the upper X-axis slide rail 22, there are a first upper X-axis ball screw 24 and a second upper X-axis ball screw 27. The first upper X-axis ball screw 24 is in threaded fit with the first upper X-axis controllable sliding frame 3; the second upper X-axis ball screw 27 is in threaded fit with the second upper X-axis controllable sliding frame 5. On the lower X-axis slide rail 23, a first lower X-axis controllable sliding frame 4 and a second lower X-axis controllable sliding frame 6 are slidably arranged. Inside the lower X-axis slide rail 23, there are a first lower X-axis ball screw 25 and a second lower X-axis ball screw 28. The first lower X-axis ball screw 25 is in threaded fit with the first lower X-axis controllable sliding frame 4; the second lower X-axis ball screw 28 is in threaded fit with the second lower X-axis controllable sliding frame 6. The first upper X-axis ball screw 24 and the first lower X-axis ball screw 25 are driven by a synchronous belt, and the first lower X-axis ball screw 25 is connected to the first X-axis servo motor 26; the second upper X-axis ball screw 27 and the second lower X-axis ball screw 28 are driven by a synchronous belt, and the second upper X-axis ball screw 27 is connected to the second X-axis servo motor 29. By the first X-axis servo motor 26, the first upper X-axis controllable sliding frame 3 and the first lower X-axis controllable sliding frame 4 can be driven to move synchronously. By the second X-axis servo motor 29, the second upper X-axis controllable sliding frame 5 and the second lower X-axis controllable sliding frame 6 can be driven to move synchronously.

[0022] On the Y-axis controllable sliding frame 2, there is a cloth channel 21. On the first upper X-axis controllable sliding frame 3, there is a first wire storage cylinder 32 driven by a first servo motor 31. On the first lower X-axis controllable sliding frame 4, there is a second wire storage cylinder 42 driven by a second servo motor 41. A metal cutting wire is wound between the first wire storage cylinder 32 and the second wire storage cylinder 42.

[0023] Specifically, in this embodiment, a first sliding platform 33 is provided on the first upper X-axis controllable sliding frame 3. A first servo motor 31 and a first wire storage cylinder 32 are arranged on the first sliding platform 33. A first lead screw 34 parallel to the first wire storage cylinder 32 is rotatably arranged on the first upper X-axis controllable sliding frame 3. A first gear speed regulating mechanism 35 is linked to the rotating shaft of the first wire storage cylinder 32. The output shaft of the first gear speed regulating mechanism 35 is in transmission connection with the first lead screw 34 through a synchronous belt. The output shaft of the first gear speed regulating mechanism 35 is in sliding key fit with the synchronous pulley thereon. The first sliding platform 33 is in threaded fit with the first lead screw 34. When the first wire storage cylinder 32 rotates one circle, the moving distance of the first sliding platform 33 is equal to the wire diameter of the metal cutting wire. A second sliding platform 43 is provided on the first lower X-axis controllable sliding frame 4. A second servo motor 41 and a second wire storage cylinder 42 are arranged on the second sliding platform 43. A second lead screw 44 parallel to the second wire storage cylinder 42 is rotatably arranged on the first lower X-axis controllable sliding frame 4. A second gear speed regulating mechanism 45 is linked to the rotating shaft of the second wire storage cylinder 42. The output shaft of the second gear speed regulating mechanism 45 is in transmission connection with the second lead screw 44 through a synchronous belt. The output shaft of the second gear speed regulating mechanism 45 is in sliding key fit with the synchronous pulley thereon. The second sliding platform 43 is in threaded fit with the second lead screw 44. When the second wire storage cylinder 42 rotates one circle, the moving distance of the second sliding platform 43 is equal to the wire diameter of the metal cutting wire. During the cutting process when the first wire storage cylinder 32 and the second wire storage cylinder 42 rotate, the first lead screw 34 and the second lead screw 44 will drive the first sliding platform 33 and the second sliding platform 43 to move, and the synchronous pulleys on the first gear speed regulating mechanism 35 and the second gear speed regulating mechanism 45 will move axially along the shaft. When the first wire storage cylinder 32 and the second wire storage cylinder 42 rotate forward, the first sliding platform 33 and the second sliding platform 43 move forward. When the first wire storage cylinder 32 and the second wire storage cylinder 42 rotate in reverse, the first sliding platform 33 and the second sliding platform 43 move in reverse, always keeping the cutting position of the metal cutting wire unchanged, thereby improving the cutting accuracy.

[0024] A first air cylinder 36 is arranged on the first upper X-axis controllable sliding frame 3. A first pressing plate 37 is arranged on the first air cylinder 36. A first wire passing hole 38 is arranged on the first pressing plate 37. A first supporting platform 46 is arranged on the first lower X-axis controllable sliding frame 4. A second wire passing hole 47 is arranged on the first supporting platform 46. The metal cutting wire passes through the first wire passing hole 38 and the second wire passing hole 47.

[0025] A second upper X-axis controllable sliding frame 5 and a second lower X-axis controllable sliding frame 6 are arranged on the Y-axis controllable sliding frame 2. A machine head 51 is arranged on the second upper X-axis controllable sliding frame 5. A machine needle 53 driven by a machine needle servo motor 52 is arranged on the machine head 51. A bottom shuttle mechanism 61 is arranged on the second lower X-axis controllable sliding frame 6. A bobbin 63 driven by a bobbin servo motor 62 is arranged on the bottom shuttle mechanism 61. The machine needle 53 cooperates with the bobbin 63 for sewing.

[0026] A second upper X-axis controllable sliding carriage 5 is provided with a second air cylinder 54. The second air cylinder 54 is provided with a second pressing plate 55. The second pressing plate 55 is provided with a first through-needle hole 56. A second lower X-axis controllable sliding carriage 6 is provided with a second support platform 64. The first support platform 46 is provided with a second through-needle hole 65. The first through-needle hole 56 and the second through-needle hole 65 are aligned with the sewing needle 53.

[0027] On the frame 1, intermediate transfer rollers 7 are provided on both sides of the fabric passage 21. On one side, a waste winding roller 8 is further provided. In use, an unwinder is placed on the side opposite to the waste winding roller 8. The fabric for the sole is loaded on the unwinder. The fabric sequentially passes through the intermediate transfer rollers 7, the fabric passage 21 and the intermediate transfer rollers 7 and is wound onto the waste winding roller 8. The fabric is laid flat. Then, the second upper X-axis controllable sliding carriage 5 and the second lower X-axis controllable sliding carriage 6 slide in from the side for sewing, and the first upper X-axis controllable sliding carriage 3 and the first lower X-axis controllable sliding carriage 4 perform cutting. During sewing, the sewing position in the X-axis direction is controlled by the second X-axis servo motor 29, and the sewing position in the Y-axis direction is controlled by the Y-axis servo motor 12. During cutting, the cutting position in the X-axis direction is controlled by the first X-axis servo motor 26, and the sewing position in the Y-axis direction is controlled by the Y-axis servo motor 12. Sewing and cutting can be carried out simultaneously or step by step. After the sole is sewn and cut, the cut sole automatically falls. Then, the second upper X-axis controllable sliding carriage 5 and the second lower X-axis controllable sliding carriage 6, the first upper X-axis controllable sliding carriage 3 and the first lower X-axis controllable sliding carriage 4 return to their original positions. After that, the waste winding roller 8 winds the waste fabric, and the new fabric continues to pass through the intermediate transfer rollers 7, the fabric passage 21 and the intermediate transfer rollers 7 and is wound onto the waste winding roller 8. Then, sewing and cutting operations are carried out again. Since the speeds of sewing and cutting are not fast, in this embodiment, a motor for automatically driving the rotation of the waste winding roller 8 is not connected, and the winding can be completed manually by a worker. Of course, for complete automation, a motor for driving the rotation of the waste winding roller 8 can also be installed.

[0028] Certainly, this application necessarily includes a control device (not shown in the figure), and the control device is used to control the operation of the above-mentioned various servo motors.

[0029] The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A gantry-type cutting numerical control machine tool for sole lasting, characterized in that: It includes a frame (1), on which a Y-axis controllable sliding frame (2) is provided. On the Y-axis controllable sliding frame (2), a first upper X-axis controllable sliding frame (3) and a first lower X-axis controllable sliding frame (4) are provided. A cloth channel (21) is provided on the Y-axis controllable sliding frame (2). A first wire storage cylinder (32) driven by a first servo motor (31) is provided on the first upper X-axis controllable sliding frame (3). A second wire storage cylinder (42) driven by a second servo motor (41) is provided on the first lower X-axis controllable sliding frame (4). A metal cutting wire is wound between the first wire storage cylinder (32) and the second wire storage cylinder (42). A first sliding platform (33) is provided on the first upper X-axis controllable sliding frame (3). The first servo motor (31) and the first wire storage cylinder (32) are arranged on the first sliding platform (33). A first lead screw (34) parallel to the first wire storage cylinder (32) is rotatably provided on the first upper X-axis controllable sliding frame (3). A first gear speed regulation mechanism (35) is linked to the rotating shaft of the first wire storage cylinder (32). The output shaft of the first gear speed regulation mechanism (35) is driven by a synchronous belt to the first lead screw (34). The output shaft of the first gear speed regulation mechanism (35) is in sliding key fit with the synchronous pulley thereon. The first sliding platform (33) is in threaded fit with the first lead screw (34). When the first wire storage cylinder (32) rotates one circle, the moving distance of the first sliding platform (33) is equal to the wire diameter of the metal cutting wire. A second sliding platform (43) is provided on the first lower X-axis controllable sliding frame (4). The second servo motor (41) and the second wire storage cylinder (42) are arranged on the second sliding platform (43). A second lead screw (44) parallel to the second wire storage cylinder (42) is rotatably provided on the first lower X-axis controllable sliding frame (4). A second gear speed regulation mechanism (45) is linked to the rotating shaft of the second wire storage cylinder (42). The output shaft of the second gear speed regulation mechanism (45) is driven by a synchronous belt to the second lead screw (44). The output shaft of the first gear speed regulation mechanism (35) is in sliding key fit with the synchronous pulley thereon. The second sliding platform (43) is in threaded fit with the second lead screw (44). When the second wire storage cylinder (42) rotates one circle, the moving distance of the second sliding platform (43) is equal to the wire diameter of the metal cutting wire. A first air cylinder (36) is provided on the first upper X-axis controllable sliding frame (3). A first pressing plate (37) is provided on the first air cylinder (36). A first wire passing hole (38) is provided on the first pressing plate (37). A first supporting platform (46) is provided on the first lower X-axis controllable sliding frame (4). A second wire passing hole (47) is provided on the first supporting platform (46). The metal cutting wire passes through the first wire passing hole (38) and the second wire passing hole (47).

2. The gantry sole-stitching cutting numerical control machine tool according to claim 1, characterized in that: A Y-axis slide rail (11) is provided on the frame (1). The Y-axis controllable sliding frame (2) is slidably arranged on the Y-axis slide rail (11). A Y-axis ball screw (13) driven by a Y-axis servo motor (12) is arranged in the Y-axis slide rail (11). The Y-axis ball screw (13) is in threaded cooperation with the Y-axis controllable sliding frame (2).

3. The gantry sole-stitching cutting numerical control machine tool according to claim 1, characterized in that: An upper X-axis slide rail (22) and a lower X-axis slide rail (23) are provided on the Y-axis controllable sliding frame (2). The first upper X-axis controllable sliding frame (3) is slidably arranged on the upper X-axis slide rail (22). A first upper X-axis ball screw (24) is arranged in the upper X-axis slide rail (22). The first upper X-axis ball screw (24) is in threaded cooperation with the first upper X-axis controllable sliding frame (3). The first lower X-axis controllable sliding frame (4) is slidably arranged on the lower X-axis slide rail (23). A first lower X-axis ball screw (25) is arranged in the lower X-axis slide rail (23). The first lower X-axis ball screw (25) is in threaded cooperation with the first lower X-axis controllable sliding frame (4). The first upper X-axis ball screw (24) and the first lower X-axis ball screw (25) are driven by at least one first X-axis servo motor (26).

4. The gantry type sole stitching cutting numerical control machine tool according to claim 3, wherein: The first upper X-axis ball screw (24) and the first lower X-axis ball screw (25) are driven by a synchronous belt. One of the first upper X-axis ball screw (24) and the first lower X-axis ball screw (25) is connected to the first X-axis servo motor (26).

5. The gantry-type sole-stitching cutting numerical control machine tool according to claim 1, wherein: A second upper X-axis controllable sliding frame (5) and a second lower X-axis controllable sliding frame (6) are provided on the Y-axis controllable sliding frame (2). A machine head (51) is provided on the second upper X-axis controllable sliding frame (5). A sewing needle (53) driven by a sewing needle servo motor (52) is provided on the machine head (51). A bobbin case mechanism (61) is provided on the second lower X-axis controllable sliding frame (6). A bobbin (63) driven by a bobbin core servo motor (62) is provided on the bobbin case mechanism (61). The sewing needle (53) cooperates with the bobbin (63) for sewing.

6. The gantry type sole stitching cutting numerical control machine tool according to claim 5, characterized in that: A second air cylinder (54) is provided on the second upper X-axis controllable sliding frame (5). A second pressing plate (55) is provided on the second air cylinder (54). A first through-needle hole (56) is provided on the second pressing plate (55). A second support platform (64) is provided on the second lower X-axis controllable sliding frame (6). A second through-needle hole (65) is provided on the first support platform (46). The first through-needle hole (56) and the second through-needle hole (65) are aligned with the sewing needle (53).

7. A gantry-type shoe sole cutting numerical control machine tool according to claim 5, characterized in that: The Y-axis controllable sliding frame (2) is provided with an upper X-axis slide rail (22) and a lower X-axis slide rail (23). The second upper X-axis controllable sliding frame (5) is slidably arranged on the upper X-axis slide rail (22). A second upper X-axis ball screw (27) is arranged in the upper X-axis slide rail (22). The second upper X-axis ball screw (27) is in threaded fit with the second upper X-axis controllable sliding frame (5). The second lower X-axis controllable sliding frame (6) is slidably arranged on the lower X-axis slide rail (23). A second lower X-axis ball screw (28) is arranged in the lower X-axis slide rail (23). The second lower X-axis ball screw (28) is in threaded fit with the second lower X-axis controllable sliding frame (6). The second upper X-axis ball screw (27) and the second lower X-axis ball screw (28) are driven by at least one second X-axis servo motor (29).

8. The gantry sole - stitching cutting numerical control machine tool according to claim 7, characterized in that: The second upper X-axis ball screw (27) and the second lower X-axis ball screw (28) are driven by a synchronous belt. One of the second upper X-axis ball screw (27) and the second lower X-axis ball screw (28) is connected to the second X-axis servo motor (29).

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