A process method and production equipment for special clothing processing

Abstract

The present invention discloses a process method and production equipment for processing special clothing, belonging to the technical field of special clothing processing. The process method includes: S1, preparation of lining; S2, preparation of surface layer; S3, sewing. The production equipment is used to sew the non-combustible lining and flame-retardant surface layer in the process method of processing special clothing, including a workbench, a flat sewing machine body arranged on the workbench, and a needle mechanism fixed on the flat sewing machine body, the needle mechanism includes a needle, a machine base and a support rod, the machine base is fixed to the flat sewing machine body through the support rod, and the needle is detachably connected to the machine base. The present invention solves the problems of heavy weight and poor flame retardancy of special clothing and the problem of inconvenient disassembly and assembly of needles.

Description

Technical Field

[0001] The invention relates to the technical field of special clothing processing, and more specifically, to a process method and production equipment for special clothing processing. Background Art

[0002] Special clothing refers to clothing with special functions or special purposes, which are used in occasions with special requirements at work, such as acid-proof clothing, fire-proof clothing, oil-resistant and water-repellent clothing, anti-static clothing, flame-retardant clothing, welding protective clothing, arc-proof clothing, etc.

[0003] Existing special clothing for fire fighting generally has the disadvantages of being heavy and having poor flame retardancy, and it is rather troublesome to disassemble and assemble the machine needle when sewing the special clothing.

[0004] In view of this, the present invention provides a process method and production equipment for processing special clothing. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a process method and production equipment for processing special clothing, which solves the problems of heavy weight and poor flame retardancy of special clothing and the inconvenient disassembly and assembly of machine needles.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A process for processing special garments comprises the following steps:

[0008] S1. Preparation of lining

[0009] Mixing chrysotile with water and stirring evenly to obtain slurry; adding sodium silicate to the slurry, stirring evenly and adding the slurry to a mold for heating and drying to obtain a primary lining; placing the primary lining and the organic silicon waterproofing agent aqueous solution in a heating furnace for heating to obtain a non-combustible lining;

[0010] S2. Preparation of surface layer

[0011] Soak the chemical fiber cloth in the flame retardant liquid for 1-3 minutes, then take out the chemical fiber cloth and dry it to obtain a flame retardant surface layer;

[0012] S3, sewing

[0013] According to the size requirements of the clothing, the non-combustible lining and the flame-retardant surface layer are cut into required shapes and sizes, and then sewn together to obtain special clothing.

[0014] Further preferably, in step S1, the mass ratio of the chrysotile, sodium silicate and silicone waterproofing agent aqueous solution is (95-99): (0.5-1): (1-5).

[0015] A production equipment for special clothing processing, used for sewing non-combustible lining and flame-retardant surface layer in the process method of special clothing processing, comprising a workbench, a flat sewing machine body arranged on the workbench, and a needle mechanism fixed on the flat sewing machine body, the needle mechanism comprising a needle, a machine base and a support rod, the machine base is fixed to the flat sewing machine body through the support rod, and the needle is detachably connected to the machine base.

[0016] It is further preferred that: the machine needle comprises a needle body and a needle head arranged at one end of the needle body, the other end of the needle body relative to the needle head is a pointed end and is provided with a needle hole for threading, the end of the needle head is provided with an insertion hole, a circle of limiting grooves are provided on the surface around the needle head, and one side of the upper part of the limiting groove is an inclined surface, so that the limiting groove is expanded outward;

[0017] A cavity is provided in the base, and a positioning mechanism, a driving mechanism and a control mechanism are provided in the cavity. The positioning mechanism includes an insertion rod matched with the limiting groove, and the control mechanism includes a main shaft, which is vertically arranged and used to be inserted in the insertion hole. A through hole matched with the needle is opened at the bottom of the base, and the needle passes through the through hole from bottom to top and extends into the cavity, so that the main shaft is inserted in the insertion hole;

[0018] The control mechanism is used to control the driving mechanism to drive the positioning mechanism to move downward, so that the insertion rod is inserted into the limiting groove, thereby locking the needle mechanism on the machine base.

[0019] It is further preferred that: the control mechanism further includes a moving platform, a turntable, a positioning pin and a limit block;

[0020] The lower end of the main shaft is provided with an external thread, the movable platform is sleeved on the main shaft and matched with the main shaft thread, the movable platform is connected with the inner wall of the cavity for sliding up and down, the limit block is located above the movable platform and fixed on the main shaft, the bottom surface of the movable platform is used to contact with the end surface of the needle, and when the needle is inserted into the cavity, the needle will drive the movable platform to move upward, so that the main shaft rotates around its central axis;

[0021] The upper end of the main shaft passes through the top of the machine base, the turntable is located above the machine base and is fixed to the upper end of the main shaft, the turntable and the top of the machine base are both provided with positioning holes, when the insertion rod is inserted into the limiting groove, the positioning holes on the turntable and the top of the machine base correspond to each other up and down, the positioning pin is used to be inserted into the positioning holes on the turntable and the machine base to limit the rotation of the main shaft around its central axis.

[0022] It is further preferred that: the driving mechanism comprises a rack, a worm gear, a rotating shaft and a helical tooth;

[0023] The helical teeth are arranged around the main shaft surface and above the limit block, the worm wheel is located on one side of the main shaft and meshed with the helical teeth, the rotating shaft passes through the center of the worm wheel and the two ends are respectively fixed on the opposite sides of the inner wall of the cavity;

[0024] The rack is located on the other side of the worm wheel relative to the main shaft, the rack is meshed with the worm wheel, and the lower end of the rack is fixed to the positioning mechanism.

[0025] Further preferably, a slide groove is provided on the inner wall of the cavity, the length direction of the slide groove is the vertical direction, a slider is fixed to the side of the rack, and the slider is inserted into the slide groove and slidably cooperates with the slide groove.

[0026] It is further preferred that: the positioning mechanism further comprises a connecting rod, a wedge, a rectangular frame, a fixing column and a side rod;

[0027] The connecting rod is fixed between the lower end of the rack and the top of the rectangular frame, the fixing column is vertically arranged and fixed to the bottom of the cavity, the fixing column passes upward through the upper and lower sides of the rectangular frame, and one side of the fixing column is provided with an oblique groove adapted to the wedge block, the bottom and top of the wedge block both extend downward toward the main axis, and the wedge block is slidably matched with the oblique groove;

[0028] The insertion rod and the side rod are respectively fixed on opposite sides of the wedge block, one end of the insertion rod is fixed on the wedge block, and the other end passes through the rectangular frame and is used to be inserted into the limit groove. A slot hole is opened on the side of the machine base, and the length direction of the slot hole is the same as the length direction of the main shaft. One end of the side rod is fixed on the wedge block, and the other end passes through the rectangular frame and is used to be inserted into the slot hole.

[0029] It is further preferred that: two of the positioning mechanisms and two of the driving mechanisms are provided, and the two positioning mechanisms and the two driving mechanisms are respectively located on opposite sides of the main shaft and have one-to-one corresponding positions.

[0030] It is further preferred that: a dust removal mechanism is arranged on the machine base, and the dust removal mechanism includes a fan, a cyclone separator, an air suction hood, an air storage pipe, an air storage cavity and a vertical pull rod, the air suction hood is fixed to the bottom of the machine base, the air storage cavity is located in the machine base and below the cavity, a filter hole for dust-containing gas to enter the air storage cavity is opened at the bottom of the air storage cavity, the air storage pipe is arranged on one side of the lower part of the machine base and is connected to the air storage cavity, and the cyclone separator, the fan and the air storage pipe are connected in sequence by pipelines;

[0031] The upper end of the vertical pull rod is located in the cavity and fixed to the bottom of the rectangular frame, and the lower end extends into the air storage cavity and is close to one side of the air storage cavity. A plug made of rubber or silicone is fixed to the side of the vertical pull rod close to the side wall of the air storage cavity. The plug is in contact with the inner wall of the air storage cavity and is used to seal the air storage pipe.

[0032] In summary, the present invention has the following beneficial effects: the special clothing consists of only two layers, is light and flame retardant, is comfortable to wear, has a good protective effect on the human body, is convenient for firefighters to use during fire operations, can also be used for people trapped in the fire to escape, and can also be used for special types of work involving high temperature operations.

[0033] When installing the needle, just insert the needle into the perforation. At this time, the main shaft will extend into the socket and push the needle upward to move the moving platform upward. Since the moving platform and the main shaft are threaded, and the worm gear is meshed with the rack and the spiral teeth on the main shaft, when the needle pushes the moving platform upward, the main shaft will rotate around its central axis, the worm gear will rotate around the rotating shaft, and the rack will move downward, so that the positioning mechanism can be driven downward by the rack. Because the connecting rod is fixed between the rack and the rectangular frame, the wedge block is located in the inclined groove and slides with the inclined groove, so when the rack moves downward, the connecting rod and the rectangular frame will move downward along the length of the fixed column, and the wedge block will move obliquely downward in the inclined groove to drive the insertion rod to insert into the limit groove. At this time, the positioning pin can be inserted into the positioning hole on the turntable and the machine base to limit the rotation of the main shaft around its central axis, and the needle installation is completed.

[0034] When disassembling the needle, just pull out the positioning pin and turn the turntable. At this time, the main shaft rotates in the opposite direction, the moving platform drives the needle head to move downward, and the wedge block drives the insertion rod to move obliquely upward along the oblique direction of the oblique groove, so that the insertion rod will gradually leave the limit groove. At this time, just pull the needle downward. It is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flowchart of an embodiment, which is mainly used to reflect the process method of special clothing processing;

[0036] Figure 2 It is a structural schematic diagram of an embodiment, which is mainly used to reflect the structure of production equipment for special clothing processing;

[0037] Figure 3 It is a cross-sectional schematic diagram of an embodiment, mainly used to illustrate the matching structure of a needle and a base;

[0038] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment, which is mainly used to illustrate the structures of the positioning mechanism, the driving mechanism, the control mechanism and the dust removal mechanism;

[0039] Figure 5It is a structural schematic diagram of an embodiment, which is mainly used to reflect the structure of the positioning mechanism;

[0040] Figure 6 It is a cross-sectional schematic diagram of an embodiment, which is mainly used to illustrate the structure of the needle mechanism.

[0041] In the figure, 1, workbench; 2, flat sewing machine body; 3, needle mechanism; 31, needle; 311, needle body; 312, needle head; 313, needle hole; 314, plug hole; 315, limit groove; 32, machine base; 33, support rod; 34, cavity; 41, rack; 42, worm gear; 43, rotating shaft; 44, spiral gear; 45, slide groove; 46, slider; 51, connecting rod; 52, slot hole; 53, wedge block; 54, rectangular frame; 55, fixing column; 56, plug rod; 57, side rod; 58, inclined groove; 61, main shaft; 62, moving table; 63, turntable; 64, positioning pin; 65, limit block; 66, guide groove; 71, suction hood; 72, filter hole; 73, air storage pipe; 74, air storage cavity; 75, vertical pull rod; 76, plugging head. DETAILED DESCRIPTION

[0042] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] Embodiment: A process method and production equipment for processing special garments, such as Figure 1 As shown, the special clothing is specifically fire-fighting clothing, and the special clothing includes a lining and a flame-retardant surface layer on the outer surface of the lining. The process method for processing the special clothing includes the following steps:

[0044] S1. Preparation of lining

[0045] Weighing chrysotile asbestos, sodium silicate, and organic silicon waterproofing agent aqueous solution in a mass ratio of 98:0.5:1.5; mixing chrysotile with water so that the chrysotile is completely immersed in the water, stirring evenly to obtain a slurry; adding sodium silicate to the slurry, stirring evenly, and adding the slurry to a mold for heating and drying to obtain a primary lining with a water content of ≤2% (by weight); placing the primary lining and the organic silicon waterproofing agent aqueous solution in a heating furnace for heating to obtain a non-combustible lining;

[0046] S2. Preparation of surface layer

[0047] Soak the chemical fiber cloth in the flame retardant liquid for 1-3 minutes, usually 15 minutes, then take out the chemical fiber cloth and dry it to obtain the flame retardant surface layer;

[0048] S3, sewing

[0049] According to the size requirements of the clothing, the non-combustible lining and the flame-retardant surface layer are cut into required shapes and sizes, and they are sewn together to obtain special clothing.

[0050] In the above technical solution, this special clothing only includes two layers, is light and flame retardant, comfortable to wear, and has a good protective effect on the human body. It is convenient for firefighters to use it when working in a fire, and can also be used for people trapped in the fire to escape. It can also be used for special jobs involving high temperature operations.

[0051] A production equipment for special clothing processing, used for sewing the non-combustible lining and flame-retardant surface layer in the process of special clothing processing. Figure 2-6 The production equipment includes a workbench 1, a flat sewing machine body 2 disposed on the workbench 1, and a needle mechanism 3 fixed on the flat sewing machine body 2. The flat sewing machine body 2 is a prior art, so the specific structure and working principle of the flat sewing machine body 2 are not described here. The needle mechanism 3 includes a needle 31, a machine base 32, and a support rod 33. The machine base 32 is fixed to the flat sewing machine body 2 through the support rod 33. Specifically, the machine base 32 is cylindrical or square columnar and its length direction is vertical. The lower end of the support rod 33 is fixed to the upper outer side of the opposite sides of the machine base 32, and the upper end is fixed to the flat sewing machine body 2.

[0052] Reference Figure 2-6 To facilitate the disassembly and assembly of the needle 31, preferably, the needle 31 is detachably connected to the base 32. The needle 31 includes a needle body 311 and a needle head 312 arranged at one end of the needle body 311. The other end of the needle body 311 relative to the needle head 312 is a pointed end and is provided with a needle hole 313 for threading. A socket 314 is provided at the end of the needle head 312 away from the end of the needle body 311. The needle head 312 and the needle body 311 are both cylindrical and the diameter of the needle head 312 is larger than the diameter of the needle body 311. A circle of limiting grooves 315 are provided on the surface around the needle head 312. The upper and lower parts of the limiting grooves 315 are inclined surfaces so that the limiting grooves 315 are expanded outwardly. Specifically, the cross-section of the limiting grooves 315 is an isosceles trapezoidal shape. A cavity 34 is provided in the base 32, and a positioning mechanism, a driving mechanism and a control mechanism are provided in the cavity 34. The control mechanism includes a main shaft 61, a moving platform 62, a rotating disk 63, a positioning pin 64 and a stop block 65. The main shaft 61 is vertically arranged and is used to be inserted into the insertion hole 314. A through hole matching the needle 312 is provided at the bottom of the base 32, and the cavity 34 is connected to the outside through the through hole. The needle 312 passes through the through hole from bottom to top and extends into the cavity 34, so that the main shaft 61 is inserted into the insertion hole 314.

[0053] Preferably, the circumferential surface of the lower end of the main shaft 61 is provided with an external thread, the movable platform 62 is sleeved on the main shaft 61 and is threadedly matched with the main shaft 61, and the movable platform 62 is connected to the inner wall of the cavity 34 by sliding up and down. Specifically, the inner wall of the cavity 34 is provided with a guide groove 66, and the length direction of the guide groove 66 is the same as the axial direction of the main shaft 61. The movable platform 62 is inserted into the guide groove 66 and is slidably matched with the guide groove 66 up and down. The limit block 65 is located above the movable platform 62 and fixed on the surface of the main shaft 61. The bottom surface of the movable platform 62 is used to contact with the end face of the needle 312 to limit the movable platform 62 from continuing to move upward along the length direction of the guide groove 66, so that the main shaft 61 stops rotating. During the process of the needle 312 being inserted into the cavity 34, the needle 312 will drive the movable platform 62 to move upward, so that the main shaft 61 rotates around its central axis. The upper end of the main shaft 61 passes through the top of the base 32, the turntable 63 is located above the base 32 and fixed to the upper end of the main shaft 61, and the turntable 63 and the top of the base 32 are both provided with positioning holes. When the insertion rod 56 is inserted into the limiting groove 315 and the moving platform 62 contacts the limiting block 65, the positioning holes on the turntable 63 and the top of the base 32 just correspond to each other up and down. The positioning pin 64 is used to be inserted into the positioning holes on the turntable 63 and the base 32 when the moving platform 62 contacts the limiting block 65, so as to limit the rotation of the main shaft 61 around its central axis.

[0054] Reference Figure 2-6 The driving mechanism includes a rack 41, a worm wheel 42, a rotating shaft 43 and a helical tooth 44. The helical tooth 44 is arranged around the surface of the main shaft 61 and is above the limit block 65. The worm wheel 42 is located on one side of the main shaft 61 and is meshed with the helical tooth 44. The rotating shaft 43 passes through the center of the worm wheel 42 and its two ends are respectively fixed on opposite sides of the inner wall of the cavity 34. The rack 41 is located on the other side of the worm wheel 42 relative to the main shaft 61. The rack 41 is meshed with the worm wheel 42, and the lower end of the rack 41 is fixed to the positioning mechanism. In order to make the rack 41 move up and down smoothly, specifically, a slide groove 45 is provided on the inner wall of the cavity 34, and the length direction of the slide groove 45 is the vertical direction. A slider 46 is fixed to the side of the rack 41, and the slider 46 is inserted into the slide groove 45 and slides up and down with the slide groove 45.

[0055] Reference Figure 2-6The positioning mechanism includes a connecting rod 51, a wedge 53, a rectangular frame 54, a fixed column 55, a side rod 57 and an insertion rod 56 adapted to the limiting groove 315. The control mechanism is used to control the driving mechanism to drive the positioning mechanism to move downward so that the insertion rod 56 is inserted into the limiting groove 315, thereby locking the needle mechanism 3 on the machine base 32. The connecting rod 51 is fixed to the opposite sides of the lower end of the rack 41, and the lower end of the connecting rod 51 is connected to the top of the rectangular frame 54. The fixed column 55 is vertically arranged and fixed to the bottom of the cavity 34. The fixed column 55 passes upward through the upper and lower sides of the rectangular frame 54. A slanted groove 58 adapted to the wedge 53 is arranged on one side of the fixed column 55, and both ends of the slanted groove 58 in the oblique direction are opened. The bottom and top of the wedge 53 extend downward in the direction close to the main axis 61, so that the side projection of the wedge 53 is a parallelogram shape. To facilitate the insertion or extraction of the insertion rod 56 into or out of the limiting groove 315, specifically, the inclination angles of the bottom and top of the wedge block 53 are smaller than the inclination angle of the upper inclined surface of the limiting groove 315. The wedge block 53 is located in the inclined groove 58 and slidably cooperates with the inclined groove 58.

[0056] Preferably, the insertion rod 56 and the side rod 57 are respectively fixed on opposite sides of the wedge block 53 in the oblique direction. One end of the insertion rod 56 is fixed on the wedge block 53, and the other end passes through one side of the rectangular frame 54 and is used to be inserted into the limit groove 315. A slot hole 52 is opened on the side of the base 32, and the length direction of the slot hole 52 is the same as the length direction of the main shaft 61. One end of the side rod 57 is fixed on the wedge block 53, and the other end passes through the other side of the rectangular frame 54 and is used to be inserted into the slot hole 52. In order to firmly fix the needle 31 on the base 32, specifically, two positioning mechanisms and two driving mechanisms are provided, and the two positioning mechanisms and the two driving mechanisms are respectively located on opposite sides of the main shaft 61 and the positions correspond to each other.

[0057] In the above technical solution, the machine needle 31 is prone to aging and damage during use, so the machine needle 31 needs to be detachably connected to the machine base 32. However, the existing machine needle 31 is connected to the machine base 32 by multiple symmetrically arranged screws. The machine needle 31 must be disassembled and assembled with the help of tools, which is more troublesome to use. For this reason, the present invention provides a special clothing processing production equipment with easy disassembly and assembly of the machine needle 31, which can improve the disassembly and assembly efficiency of the machine needle 31 and is simple and convenient to use.

[0058] When installing the needle 31, just insert the needle 312 into the hole. At this time, the main shaft 61 will extend into the socket 314 and push the needle 312 upward to move the movable platform 62 upward. Since the movable platform 62 and the main shaft 61 are threadedly matched, and the worm gear 42 is meshed with the rack 41 and the spiral teeth 44 on the main shaft 61, when the needle 312 pushes the movable platform 62 to move upward, the main shaft 61 will rotate around its center axis, the worm gear 42 will rotate around the rotating shaft 43, and the rack 41 will move downward, thereby driving the positioning mechanism to move downward through the rack 41. Because the connecting rod 51 is fixed between the rack 41 and the rectangular frame 54, the wedge block 53 is located in the inclined groove 58 and slides with the inclined groove 58. Therefore, when the rack 41 moves downward, the connecting rod 51 and the rectangular frame 54 will move downward along the length direction of the fixed column 55, and the wedge block 53 will move obliquely downward in the inclined groove 58 to drive the insertion rod 56 to be inserted into the limit groove 315. At this time, the positioning pin 64 can be inserted into the positioning hole on the turntable 63 and the machine base 32 to limit the rotation of the main shaft 61 around its center axis, and the installation of the needle 31 is completed.

[0059] When disassembling the needle 31, just pull out the positioning pin 64 and rotate the turntable 63. At this time, the main shaft 61 rotates in the opposite direction, the movable platform 62 drives the needle head 312 to move downward, and the wedge block 53 drives the insertion rod 56 to move obliquely upward along the oblique direction of the oblique groove 58, so that the insertion rod 56 will gradually disengage from the limiting groove 315. At this time, the needle 31 can be pulled downward. It is simple and convenient to use.

[0060] Reference Figure 2-6 During the sewing process of the non-combustible lining and the flame-retardant surface layer through the needle 31, fine impurities such as lint and debris will be generated. For this reason, in the present invention, a dust removal mechanism is provided on the machine base 32. The dust removal mechanism includes a fan, a cyclone separator, an air suction hood 71, an air storage pipe 73, an air storage cavity 74 and a vertical pull rod 75. The air suction hood 71 is fixed to the bottom of the machine base 32 and is expanded downward. The air storage cavity 74 is located in the machine base 32 and below the cavity 34. A filter hole 72 for dust-containing gas to enter the air storage cavity 74 is provided at the bottom of the air storage cavity 74, and the filter hole 72 is located in the air suction hood 71. The air storage pipe 73 is arranged on one side of the lower part of the machine base 32 and is connected to the air storage cavity 74. The cyclone separator, the fan and the air storage pipe 73 are connected by pipelines in sequence, and the air inlet of the fan is connected to the air storage pipe 73 pipeline, and the air outlet is connected to the inlet pipeline of the cyclone separator. The cyclone separator and the fan can be installed on the workbench 1 or on the sewing machine body 2 .

[0061] Preferably, the upper end of the vertical pull rod 75 is located in the cavity 34 and fixed to the bottom of the rectangular frame 54, and the lower end extends into the air storage cavity 74 and is close to one side of the air storage cavity 74. A plug 76 made of rubber or silicone is fixed to the side of the vertical pull rod 75 close to the side wall of the air storage cavity 74. The plug 76 contacts the inner wall of the air storage cavity 74 and is used to block the air storage pipe 73. When the needle 31 is installed in the machine base 32, the plug 76 is located below the connection between the air storage pipe 73 and the air storage cavity 74. When the needle 31 is pulled out of the machine base 32, the plug 76 moves upward and just blocks the connection between the air storage pipe 73 and the air storage cavity 74 to prevent external impurities from entering the air storage cavity 74 through the air storage pipe 73.

[0062] In the above technical solution, when the fan is started, the dusty gas around the needle 31 will enter the air storage chamber 74 through the suction hood 71 and the filter hole 72, and finally enter the cyclone separator through the air storage pipe 73 and the connecting pipe, so as to achieve purification and dust removal through the cyclone separator. When the production equipment is idle, in order to reduce the aging and damage of the needle 31 and to reduce the safety hazards caused by the needle 31, the needle 31 is often disassembled. For this reason, the present invention is provided with a vertical pull rod 75 and a plugging head 76. During the disassembly process of the needle 31, the vertical pull rod 75 and the plugging head 76 will move upward, so that the air storage pipe 73 can be sealed by the plugging head 76, so as to prevent external impurities from entering the air storage chamber 74 through the air storage pipe 73.

[0063] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A production equipment for special clothing processing, used for sewing the non-combustible lining and the flame-retardant surface layer in the process of special clothing processing, characterized in that: The process of special garment processing includes the following steps: S1. Preparation of lining Mixing chrysotile with water and stirring evenly to obtain slurry; adding sodium silicate to the slurry, stirring evenly and adding the slurry to a mold for heating and drying to obtain a primary lining; placing the primary lining and the organic silicon waterproofing agent aqueous solution in a heating furnace for heating to obtain a non-combustible lining; S2. Preparation of surface layer Soak the chemical fiber cloth in the flame retardant liquid for 1-3 minutes, then take out the chemical fiber cloth and dry it to obtain a flame retardant surface layer; S3, sewing According to the size requirements of the clothing, the non-combustible lining and the flame-retardant surface layer are cut into required shapes and sizes, and they are sewn to obtain special clothing; The production equipment comprises a workbench (1), a flat sewing machine body (2) arranged on the workbench (1), and a needle mechanism (3) fixed on the flat sewing machine body (2), the needle mechanism (3) comprising a needle (31), a machine base (32), and a support rod (33), the machine base (32) being fixed on the flat sewing machine body (2) via the support rod (33), and the needle (31) being detachably connected to the machine base (32); The machine needle (31) comprises a needle body (311) and a needle head (312) arranged at one end of the needle body (311); the other end of the needle body (311) relative to the needle head (312) is provided with a pointed end and has a needle hole (313) for threading; the end of the needle head (312) is provided with an insertion hole (314); the surface of the needle head (312) is provided with a circle of limiting grooves (315); one side of the upper part of the limiting groove (315) is an inclined surface, so that the limiting groove (315) is expanded outwardly; A cavity (34) is provided in the base (32), and a positioning mechanism, a driving mechanism and a control mechanism are provided in the cavity (34); the positioning mechanism comprises an insertion rod (56) matched with the limiting groove (315); the control mechanism comprises a main shaft (61), the main shaft (61) is vertically arranged and used to be inserted in the insertion hole (314); a through hole matched with the needle (312) is provided at the bottom of the base (32); the needle (312) passes through the through hole from bottom to top and extends into the cavity (34), so that the main shaft (61) is inserted in the insertion hole (314); The control mechanism is used to control the driving mechanism to drive the positioning mechanism to move downward, so that the insertion rod (56) is inserted into the limiting groove (315), thereby locking the needle mechanism (3) on the machine base (32); The control mechanism further comprises a moving platform (62), a rotating disk (63), a positioning pin (64) and a limit block (65); The lower end of the main shaft (61) is provided with an external thread, the movable platform (62) is sleeved on the main shaft (61) and is threadedly matched with the main shaft (61), the movable platform (62) is slidably connected to the inner wall of the cavity (34) up and down, the limit block (65) is located above the movable platform (62) and is fixed on the main shaft (61), the bottom surface of the movable platform (62) is used to contact the end surface of the needle (312), and when the needle (312) is inserted into the cavity (34), the needle (312) will drive the movable platform (62) to move upward, so that the main shaft (61) rotates around its central axis; The upper end of the main shaft (61) passes through the top of the machine base (32); the turntable (63) is located above the machine base (32) and is fixed to the upper end of the main shaft (61); the turntable (63) and the top of the machine base (32) are both provided with positioning holes; when the insertion rod (56) is inserted into the limiting groove (315), the positioning holes on the turntable (63) and the top of the machine base (32) correspond to each other up and down; the positioning pin (64) is used to be inserted into the positioning holes on the turntable (63) and the machine base (32) to limit the rotation of the main shaft (61) around its central axis.

2. The production equipment for special garment processing according to claim 1, characterized in that: The driving mechanism comprises a rack (41), a worm gear (42), a rotating shaft (43) and a helical tooth (44); The helical teeth (44) are arranged around the surface of the main shaft (61) and above the limit block (65); the worm wheel (42) is located on one side of the main shaft (61) and meshes with the helical teeth (44); the rotating shaft (43) passes through the center of the worm wheel (42) and has two ends respectively fixed on opposite sides of the inner wall of the cavity (34); The rack (41) is located on the other side of the worm wheel (42) relative to the main shaft (61), the rack (41) is meshed with the worm wheel (42), and the lower end of the rack (41) is fixed to the positioning mechanism.

3. The production equipment for special garment processing according to claim 2, characterized in that: The inner wall of the cavity (34) is provided with a slide groove (45), the length direction of the slide groove (45) is in the vertical direction, a sliding block (46) is fixed to the side of the rack (41), and the sliding block (46) is inserted into the slide groove (45) and slidably cooperates with the slide groove (45).

4. The production equipment for special garment processing according to claim 2, characterized in that: The positioning mechanism further comprises a connecting rod (51), a wedge block (53), a rectangular frame (54), a fixing column (55) and a side rod (57); The connecting rod (51) is fixed between the lower end of the rack (41) and the top of the rectangular frame (54); the fixing column (55) is vertically arranged and fixed to the bottom of the cavity (34); the fixing column (55) passes upward through the upper and lower sides of the rectangular frame (54); one side of the fixing column (55) is provided with an inclined groove (58) adapted to the wedge block (53); the bottom and the top of the wedge block (53) both extend downward in a direction close to the main shaft (61); the wedge block (53) is slidably matched with the inclined groove (58); The insertion rod (56) and the side rod (57) are respectively fixed on opposite sides of the wedge block (53); one end of the insertion rod (56) is fixed on the wedge block (53), and the other end passes through the rectangular frame (54) and is used to be inserted into the limiting groove (315); a slot hole (52) is opened on the side of the machine base (32); the length direction of the slot hole (52) is the same as the length direction of the main shaft (61); one end of the side rod (57) is fixed on the wedge block (53), and the other end passes through the rectangular frame (54) and is used to be inserted into the slot hole (52).

5. The production equipment for special garment processing according to claim 1, characterized in that: Two of the positioning mechanisms and two of the driving mechanisms are provided, and the two positioning mechanisms and the two driving mechanisms are respectively located on two opposite sides of the main shaft (61) and have one-to-one corresponding positions.

6. The production equipment for special garment processing according to claim 4, characterized in that: The machine base (32) is provided with a dust removal mechanism, the dust removal mechanism comprising a fan, a cyclone separator, an air suction hood (71), an air storage pipe (73), an air storage cavity (74) and a vertical pull rod (75), the air suction hood (71) is fixed to the bottom of the machine base (32), the air storage cavity (74) is located in the machine base (32) and below the cavity (34), a filter hole (72) for dust-containing gas to enter the air storage cavity (74) is provided at the bottom of the air storage cavity (74), the air storage pipe (73) is arranged on one side of the lower part of the machine base (32) and is connected to the air storage cavity (74), and the cyclone separator, the fan and the air storage pipe (73) are connected in sequence by pipelines; The upper end of the vertical pull rod (75) is located in the cavity (34) and is fixed to the bottom of the rectangular frame (54), and the lower end extends into the air storage cavity (74) and is close to one side of the air storage cavity (74). A plug (76) made of rubber or silicone is fixed to the side of the vertical pull rod (75) close to the side wall of the air storage cavity (74). The plug (76) is in contact with the inner wall of the air storage cavity (74) and is used to seal the air storage pipe (73).

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