Equipment capable of stretching mesh cloth and used for automatically pressing and manufacturing seat mesh back

Abstract

The invention discloses equipment capable of stretching mesh cloth and used for automatically pressing a seat mesh back, which comprises a workbench, and the workbench is provided with a fixing mechanism used for fixing the seat back, an X-axis pressing mechanism used for processing the top of the seat back, and a Y-axis pressing mechanism used for processing the two sides of the seat back, the X-axis pressing mechanism comprises a bending and pressing block used for bending and pressing the net back and a first power assembly used for driving the bending and pressing block to move, a groove with an opening facing the fixing mechanism is formed in the bending and pressing block, and the Y-axis pressing mechanism comprises a first pressing roller and a second power assembly used for driving the first pressing roller to move. The folding and pressing block is driven by the first power assembly to move, the edge of the top of the chair back is located in the groove, the first power assembly drives the folding and pressing block to be attached to the screen cloth on the upper side of the chair back and move and rotate from top to bottom, and the effect of manually stretching, folding and pressing the screen cloth is achieved; the adhesive tape is pressed into a gap in the edge of the chair back through the first pressing roller, and automatic pressing of the chair back mesh cloth is achieved.

Description

[0001] Cross-reference to related applications

[0002] This application is a divisional application of Chinese patent application No. 2023118516254, filed on December 29, 2023, entitled "A device for automatic upholstery of seat back". Technical Field

[0003] This invention relates to the field of chair back mesh installation technology, specifically to a device for automatic fabrication of seat back mesh. Background Technology

[0004] Office spaces typically use mesh chairs. To manufacture a mesh chair, you simply need to fabricate a layer of mesh fabric onto the backrest according to its shape and press the edge adhesive strips into the gaps of the backrest frame to complete the manufacturing of a chair back.

[0005] Currently, most of the work of attaching mesh fabric to chair backs requires manual labor. Because the initial size of the mesh fabric is similar to that of the chair back, it needs to be stretched during the attaching process to ensure it is fully stretched before fastening. After repeated fastening work, workers experience hand pain and are unable to continue working.

[0006] In the prior art, the mesh fabric at the top of the chair back is fastened by moving the snap-on roller along the boundary of the top of the chair back, and the mesh fabric is fastened as a whole with the help of the tension spring.

[0007] However, the existing technology only uses a pressing roller to press the adhesive strip into the gap at the edge of the chair back, and cannot stretch and flatten the mesh fabric. Workers also need to flatten the mesh fabric and align the adhesive strip with the gap at the edge of the chair back before starting the pressing equipment. Summary of the Invention

[0008] In order to solve at least one of the technical problems mentioned in the background art, the present invention aims to provide a device for automatic upholstery of seat backs, which can stretch and flatten the mesh fabric, thus avoiding the need for workers to flatten the mesh fabric and align the adhesive strips before starting the upholstery device.

[0009] To achieve the above objectives, the present invention provides the following technical solution: An apparatus for automatically fabricating a seat backrest includes a worktable. The worktable is provided with a fixing mechanism for fixing the seat backrest, an X-axis fabricating mechanism for processing the top of the seat backrest, and a Y-axis fabricating mechanism for processing the sides of the seat backrest. The X-axis fabricating mechanism includes a bending and pressing block for bending and pressing the backrest, and a first power component for driving the bending and pressing block to move. The bending and pressing block has a groove with an opening facing the fixing mechanism. The Y-axis fabricating mechanism includes a first pressure roller and a second power component for driving the first pressure roller to move.

[0010] Compared with the prior art, the present application has the beneficial effects that the chair back is fixed on the fixing mechanism, the net cloth is laid on the chair back, the folding pressing block is driven to move by the first power assembly, the top edge of the chair back is located in the groove, the folding pressing block is driven to stick to the net cloth on the upper side of the chair back and move and rotate from top to bottom, the effect of manually stretching and folding the net cloth is achieved, and the adhesive tape is pressed into the gap of the edge of the chair back by the first pressing roller, so that the automatic pressing of the chair back net cloth is realized.

[0011] Preferably, the first power assembly comprises an X-axis sliding box slidably connected along the X-axis direction of the workbench, a folding pressing block rotating plate connected with the folding pressing block through universal wheels, a plurality of first sliding rods fixedly arranged on the folding pressing block rotating plate, a folding pressing block movable plate slidably connected with the plurality of first sliding rods, a first compression spring sleeved on the first sliding rod, and a first tension spring and a second tension spring, both stress ends of the first tension spring are fixedly arranged on the upper side of the folding pressing block and the upper side of the folding pressing block rotating plate respectively, both stress ends of the second tension spring are fixedly arranged on the lower side of the folding pressing block and the lower side of the folding pressing block rotating plate respectively, the X-axis sliding box is provided with a folding pressing block translation driving piece for driving the folding pressing block movable plate to approach / away from the fixing mechanism, and the X-axis sliding box is provided with a folding pressing block lifting driving piece for driving the folding pressing block movable plate to lift.

[0012] Preferably, the X-axis pressing mechanism further comprises a second pressing roller, and the second pressing roller is located on one side of the folding pressing block.

[0013] Preferably, the first power assembly further comprises a second rotating shell rotationally connected with the second pressing roller, a second pressing roller hinged plate hinged with the second rotating shell, a plurality of second sliding rods fixedly arranged on the second pressing roller hinged plate, a second pressing roller movable plate slidably connected with the plurality of second sliding rods, a second compression spring sleeved on the second sliding rod, and a third tension spring, both stress ends of the third tension spring are fixedly arranged on the second rotating shell and the second pressing roller hinged plate respectively, and the X-axis sliding box is provided with a second pressing roller driving piece for driving the second pressing roller to approach / away from the fixing mechanism.

[0014] Preferably, two V-shaped inclined surfaces are arranged in the groove, and the two V-shaped inclined surfaces are open to the fixing mechanism.

[0015] Preferably, the second power assembly comprises a Y-axis sliding box slidably connected along the Y-axis direction of the workbench, a first rotating shell rotatably connected with the first pressure roller, a first pressure roller hinged plate hinged with the first rotating shell, a plurality of third sliding rods fixedly arranged on the first pressure roller hinged plate, a third pressure roller movable plate slidably connected with the plurality of third sliding rods, a third compression spring sleeved on the third sliding rod, and a fourth tension spring, both force receiving ends of the fourth tension spring being fixedly arranged on the first rotating shell and the first pressure roller hinged plate respectively, the Y-axis sliding box being provided with a first pressure roller translation driving element for driving the first pressure roller to move close to or away from the fixing mechanism, and the Y-axis sliding box being provided with a first pressure roller lifting driving element for driving the first pressure roller to lift.

[0016] Preferably, the second power assembly further comprises a Y-axis driving motor fixedly arranged on the workbench, a Y-axis screw threadedly connected with the Y-axis sliding box, and a mechanical transmission assembly, an input end of the mechanical transmission assembly being fixedly connected with an output end of the Y-axis driving motor, and an output end of the mechanical transmission assembly being fixedly connected with the Y-axis screw.

[0017] Preferably, the fixing mechanism comprises a downward pressing servo motor and a downward pressing element for pressing the back of the chair, the downward pressing element being fixedly arranged on an output end of the downward pressing servo motor.

[0018] Preferably, the fixing mechanism further comprises a plurality of columns for supporting the back of the chair, a plurality of first positioning rods abutting against the inner wall of the top of the back of the chair, a plurality of second positioning rods abutting against the inner walls of the two sides of the back of the chair, and a plurality of third positioning rods abutting against the inner wall of the bottom of the back of the chair.

[0019] Preferably, the top surface of the workbench is arranged to be inclined, the fixing mechanism, the X-axis pressing mechanism and the two Y-axis pressing mechanisms are arranged on the workbench respectively, and the fixing mechanism is located on the obliquely upper side of the X-axis pressing mechanism, and the two Y-axis pressing mechanisms are located on the two sides of the fixing mechanism respectively. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure of the X-axis pressing mechanism of the present application; Figure 3 It is a schematic diagram of the internal structure of the X-axis pressing mechanism of the present application; Figure 4 It is a schematic diagram of the partial structure of the pressure roller part of the X-axis pressing mechanism of the present application; Figure 5 It is a schematic diagram of the partial structure of the folding and pressing part of the X-axis pressing mechanism of the present application; Figure 4 It is an enlarged view of the partial structure at “A”; Figure 6 It is a schematic diagram of the partial structure of the folding and pressing part of the X-axis pressing mechanism of the present application; Figure 7It is a side view of the folding and pressing block of the present application; Figure 8 It is a structural schematic diagram of the Y-axis touch mechanism of the present application; Figure 9 It is a structural schematic diagram of the Y-axis touch mechanism of the present application; Figure 10 It is a structural schematic diagram of the fixing mechanism of the present application; Figure 9 It is a local enlarged view of "B"; Figure 11 It is a structural schematic diagram of the fixing mechanism of the present application; Figure 12 It is a structural schematic diagram of the fixing mechanism of the present application; Figure 11 It is a local enlarged view of "C"; In the figure: 1, workbench; 2, X-axis touch mechanism; 20, X-axis sliding box; 21, folding and pressing block; 21a, groove; 21b, inclined surface; 21c, bottom surface; 21d, flat surface; 21e, chamfer; 210, first sliding rail; 211, folding and pressing block translation driving part; 212, first sliding plate; 2120, third sliding rail; 213, folding and pressing block lifting driving part; 214, folding and pressing block movable plate; 215, folding and pressing block rotating plate; 216, first tension spring; 217, second tension spring; 218, first sliding rod; 219, first compression spring; 22, second compression roller; 220, second sliding rail; 221, second compression roller driving part; 222, second compression roller movable plate; 223, second compression roller hinged plate; 224, third tension spring; 225, second sliding rod; 226, second compression spring; 23, X-axis driving motor; 231, X-axis screw; 232, mechanical transmission assembly; 233, X-axis sliding rail; 24, first dust cover; 3, Y-axis touch mechanism; 30, Y-axis sliding box; 31, first compression roller; 311, first compression roller translation driving part; 312, second sliding plate; 3120, fourth sliding rail; 313, first compression roller lifting driving part; 314, third compression roller movable plate; 315, first compression roller hinged plate; 316, fourth tension spring; 317, third sliding rod; 318, third compression spring; 32, Y-axis driving motor; 321, Y-axis screw; 322, mechanical transmission assembly; 323, Y-axis sliding rail; 33, second dust cover; 4, fixing mechanism; 41, first positioning rod; 42, stand; 43, second positioning rod; 45, third positioning rod; 46, downward pressing servo motor; 47, downward pressing part; 471, clamping block; 5, chair back; 51, crossbar. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figure 1 The embodiment provides a device for automatically manufacturing a seat mesh back, comprising a workbench 1, the top surface of the workbench 1 is arranged to be inclined, preferably, the inclined workbench surface is 36°, and the top surface of the workbench 1 is arranged to be inclined along the Y-axis direction. The top surface of the workbench 1 is provided with a fixing mechanism 4, an X-axis manufacturing mechanism 2 and two Y-axis manufacturing mechanisms 3. The X-axis direction of the chair back 5 fixed by the fixing mechanism 4 is horizontal, and the top of the chair back 5 is located on the downside of the bottom (the chair back 5 is fixed to be inclined downward) in the Y-axis direction. The fixing mechanism 4 is located on the oblique upper side of the X-axis manufacturing mechanism 2 (the upper side in the Y-axis direction), and the X-axis manufacturing mechanism 2 is used to manufacture the top of the chair back 5. The two Y-axis manufacturing mechanisms 3 are respectively located on the two sides of the fixing mechanism 4, and are respectively used to manufacture the two sides of the chair back 5.

[0023] Please refer to Figures 2-7 In the embodiment, the X-axis manufacturing mechanism 2 comprises a bending and pressing block 21 used for bending and pressing the mesh back, a second pressing roller 22 located on the rear side of the bending and pressing block 21 in the X-axis moving direction, and a first power assembly used for driving the bending and pressing block 21 to move. The first power assembly comprises an X-axis driving motor 23 fixed on the top surface of the workbench 1, an X-axis sliding rail 233 fixed on the top surface of the workbench 1, an X-axis sliding box 20 in sliding connection with the X-axis sliding rail 233, an X-axis screw rod 231 in threaded connection with the X-axis sliding box 20, an X-axis transmission assembly 232, a first sliding rail 210 and a second sliding rail 220 fixed on the X-axis sliding box 20, a first sliding plate 212 in sliding connection with the first sliding rail 210, a third sliding rail 2120 fixed on the first sliding plate 212, a bending and pressing block movable plate 214 in sliding connection with the third sliding rail 2120, and a second pressing roller movable plate 222 in sliding connection with the second sliding rail 220. The X-axis sliding box 20 is fixed with a bending and pressing block translation driving piece 211 used for driving the first sliding plate 212 to move close to / away from the fixing mechanism 4. The first sliding plate 212 is provided with a bending and pressing block lifting driving piece 213 used for driving the bending and pressing block movable plate 214 to lift. The X-axis sliding box 20 is fixed with a second pressing roller driving piece 221 used for driving the second pressing roller movable plate 222 to move close to / away from the fixing mechanism 4.

[0024] The X-axis transmission assembly 232 is a belt wheel pair or a gear pair, the input end of the X-axis transmission assembly 232 is fixedly connected with the output end of the X-axis driving motor 23, and the output end of the X-axis transmission assembly 232 is fixedly connected with the X-axis screw rod 231. The X-axis sliding box 20 can also be manually pushed to slide along the X-axis direction on the workbench 1.

[0025] Further, the first power assembly further comprises a folding and pressing block rotating plate 215 connected to the folding and pressing block 21 through universal wheels, a plurality of first sliding rods 218 fixed on the folding and pressing block rotating plate 215, a first compression spring 219 and a second compression spring 217 in sliding connection with the plurality of first sliding rods 218 and sleeved on the first sliding rods 218, and a first tension spring 216, wherein the folding and pressing block 21 is provided with a groove 21a opening towards the fixing mechanism 4, two force receiving ends of the first tension spring 216 are fixed on the upper side of the folding and pressing block 21 and the upper side of the folding and pressing block rotating plate 215 respectively, and two force receiving ends of the second tension spring 217 are fixed on the lower side of the folding and pressing block 21 and the lower side of the folding and pressing block rotating plate 215 respectively.

[0026] The first power assembly further comprises a second rotating shell in rotating connection with the second compression roller 22, a second compression roller hinged plate 223 hinged to the second rotating shell, a plurality of second sliding rods 225 fixed on the second compression roller hinged plate 223, a second compression roller movable plate 222 in sliding connection with the plurality of second sliding rods 225, a second compression spring 226 sleeved on the second sliding rods 225, and a third tension spring 224, wherein two force receiving ends of the third tension spring 224 are fixed on the second rotating shell and the second compression roller hinged plate 223 respectively, and the X-axis sliding box 20 is provided with a second compression roller driving member 221 for driving the second compression roller 22 to move close to or away from the fixing mechanism 4.

[0027] The X-axis sliding box 20 is provided with a first dust cover 24 on each side, and the end of the first dust cover 24 away from the X-axis sliding box 20 is fixed on the workbench 1, wherein the first dust cover 24 is of telescopic structure.

[0028] The folding and pressing block translation driving member 211, the folding and pressing block lifting driving member 213, and the second compression roller driving member 221 are electric push rods.

[0029] The X-axis driving motor 23 and the X-axis transmission assembly 232 drive the X-axis screw 231 to rotate, so that the X-axis sliding box 20 slides along the X-axis direction of the workbench 1 (the X-axis screw 231 and the X-axis sliding rail 233 extend along the X-axis direction), the folding pressing block translation driving part 211 and the second pressure roller driving part 221 drive the folding pressing block 21 and the second pressure roller 22 to abut against the top of the chair back 5 respectively, and the folding pressing block lifting driving part 213 drives the folding pressing block 21 to lift, so that the top edge of the chair back 5 is located in the groove 21a; through the cooperation of the first compression spring 219, the first sliding rod 218, the first tension spring 216 and the second tension spring 217, the screen cloth is always tightly attached to the chair back 5 and the inner wall of the groove 21a during the pressing process, the folding pressing block lifting driving part 213 drives the folding pressing block 21 to move from top to bottom, the folding pressing block 21 moves and rotates, and the stretching and flattening of the screen cloth is realized. Then the second pressure roller driving part 221 pushes the second pressure roller 22 to tightly abut against the top of the screen cloth, and under the cooperation of the third tension spring 224 and the second sliding rod 225, the X-axis sliding box 20 moves along the X-axis direction, the top adhesive tape is pressed into the groove of the chair back 5 at the top, and the pressing of the top of the chair back 5 is realized.

[0030] In order to improve the effect of stretching the screen cloth, the groove 21a of the folding pressing block 21 includes a bottom surface 21c located at the center and horizontally arranged, two inclined surfaces 21b located on the upper and lower sides of the bottom surface 21c, two planes 21d located close to the chair back 5 on the inclined surfaces 21b, and a chamfer 21e located close to the chair back 5 on the plane 21d, wherein the two inclined surfaces 21b are V-shaped and the openings face the chair back 5, and the two planes 21d (especially the upper plane 21d) are used to simulate the shape of a hand holding a buckle, so as to facilitate the stretching and flattening of the screen cloth.

[0031] The Y-axis sliding box 30 is provided with a second dust cover 33 on each side, and the end of the second dust cover 33 away from the Y-axis sliding box 30 is fixedly arranged on the workbench 1, and the second dust cover 33 is a telescopic structure.

[0032] Please refer to Figures 8-10 In the embodiment, the Y-axis pressing mechanism 3 includes a first pressure roller 31 and a second power assembly for driving the first pressure roller 31 to move.

[0033] The second power assembly comprises a Y-axis sliding box 30 slidably connected along the Y-axis direction of the workbench 1, a second sliding plate 312 slidably connected with the Y-axis sliding box 30, a fourth sliding rail 3120 fixedly arranged on the second sliding plate 312, a third pressure roller movable plate 314 slidably connected with the fourth sliding rail 3120, a first rotating shell rotatably connected with the first pressure roller 31, a first pressure roller hinged plate 315 hingedly connected with the first rotating shell, a plurality of third sliding rods 317 (the third pressure roller movable plate 314 is slidably connected with the third sliding rods 317) fixedly arranged on the first pressure roller hinged plate 315, third compression springs 318 sleeved on the third sliding rods 317, and a fourth tension spring 316, both force receiving ends of the fourth tension spring 316 are fixedly arranged on the first rotating shell and the first pressure roller hinged plate 315 respectively, the Y-axis sliding box 30 is provided with a first pressure roller translation driving piece 311 for driving the third pressure roller movable plate 314 to move close to or away from the fixing mechanism 4, and the Y-axis sliding box 30 is provided with a first pressure roller lifting driving piece 313 for driving the third pressure roller movable plate 314 to lift. The first pressure roller translation driving piece 311 and the first pressure roller lifting driving piece 313 are electric push rods.

[0034] Further, the second power assembly further comprises a Y-axis driving motor 32 fixedly arranged on the workbench 1, a Y-axis sliding rail 323 (the Y-axis sliding box 30 is slidably connected with the Y-axis sliding rail 323) fixedly arranged on the workbench 1, a Y-axis screw rod 321 threadedly connected with the Y-axis sliding box 30, and a mechanical transmission assembly 322, an input end of the mechanical transmission assembly 322 is fixedly connected with an output end of the Y-axis driving motor 32, and an output end of the mechanical transmission assembly 322 is fixedly connected with the Y-axis screw rod 321. The mechanical transmission assembly 322 is a belt wheel pair or a gear pair, the input end of the mechanical transmission assembly 322 is fixedly connected with the output end of the Y-axis driving motor 32, and the output end of the mechanical transmission assembly 322 is fixedly connected with the Y-axis screw rod 321. The Y-axis sliding box 30 can also be manually pushed to slide along the X-axis direction on the workbench 1. The Y-axis sliding rail 323 and the Y-axis screw rod 321 slide along the Y-axis direction of the workbench 1 (i.e., slide along the two sides of the backrest 5).

[0035] The Y-shaft driving motor 32 and the mechanical transmission assembly 322 drive the Y-shaft screw 321 to rotate, so that the Y-shaft sliding box 30 slides along the Y-shaft direction; the first pressure roller translation driving part 311 drives the third pressure roller movable plate 314 to approach the side surface of the chair back 5, the first pressure roller translation driving part 311 drives the third pressure roller movable plate 314 to ascend and descend, the fourth tension spring 316, the third sliding rod 317 and the third compression spring 318 jointly act on the third pressure roller movable plate 314, so that the first pressure roller 31 is always tightly attached to the screen cloth, and the screen cloth is also tightly attached to the side surface of the chair back 5; the fourth tension spring 316 is located on the upper side of the first pressure roller 31, the axial direction of the first pressure roller 31 is located in the vertical plane, and the axial direction of the first pressure roller 31 is obliquely arranged; the upper end of the first pressure roller 31 is close to the chair back 5; when the first pressure roller 31 is tightly attached, the fourth tension spring 316 is stretched, and the third compression spring 318 is compressed, so that the first pressure roller 31 is more closely attached to the chair back 5 (the attachment angle and principle of the second pressure roller 22 are the same as those of the first pressure roller 31).

[0036] Please refer to Figure 11 and Figure 12 In the embodiment, the fixing mechanism 4 comprises a pressing servo motor 46 and a pressing part 47 for pressing the chair back 5, the pressing part 47 is fixed to the output end of the pressing servo motor 46; the fixing mechanism 4 further comprises a plurality of columns 42 for supporting the chair back 5, a plurality of first positioning rods 41 abutting against the inner wall of the top of the chair back 5, a plurality of second positioning rods 43 abutting against the inner wall of the two sides of the chair back 5, and a plurality of third positioning rods 45 abutting against the inner wall of the bottom of the chair back 5. The chair back 5 is placed on the columns 42, and the chair back 5 is fixed by the first positioning rods 41, the second positioning rods 43 and the third positioning rods 45 from the inside, and then the pressing part 47 is driven by the pressing servo motor 46 to descend, the end of the pressing part 47 is provided with a clamping block 471, the clamping block 471 is made of flexible material such as rubber and silica gel, the clamping block 471 is pressed on the cross rod 51 (the cross rod 51 is arranged on the outer frame of the chair back 5) of the chair back 5 to press and fix the chair back 5, the chair back 5 does not contact the workbench 1, and the top of the chair back 5 is located obliquely below the bottom.

[0037] The application solves the problem of large consumption of manpower in the process of manually stretching the rubber edge and inserting the rubber edge, reduces the labor cost and reduces the manual operation process. The application solves the problem of high labor intensity of workers using rubber hammers to knock the rubber edge in the process of manual stretching, makes the operation more convenient and improves the efficiency. The application solves the problem of difference in the tension degree of the screen cloth in different places due to the limitation of the operation experience and operation level of workers in the process of manual installation, and achieves uniform stretching effect and effective quality guarantee. The application has high safety factor and greatly reduces the risk of finger injury in the process of manual stretching. The application does not need manual alignment, reduces the stretching time and effectively improves the stretching efficiency.

[0038] It is worth noting that the first pressure roller 31, the second pressure roller 22 and the groove 21a have frictional force with the webbing respectively, which can drive the webbing to move to the edge of the chair back 5.

[0039] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiment, and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A device for automatic manufacturing of seat web back of stretchable web, comprising a worktable (1), characterized in that, The workbench (1) is provided with a fixing mechanism (4) for fixing a chair back (5), an X-axis molding mechanism (2) for processing the top of the chair back (5), and a Y-axis molding mechanism (3) for processing the two sides of the chair back (5), the X-axis molding mechanism (2) comprises a bending and pressing block (21) for bending and pressing the net back, and a first power assembly for driving the bending and pressing block (21) to move, the bending and pressing block (21) is provided with a groove (21a) opening towards the fixing mechanism (4), and the Y-axis molding mechanism (3) comprises a first pressing roller (31) and a second power assembly for driving the first pressing roller (31) to move; The first power assembly comprises an X-axis sliding box (20) slidingly connected along the X-axis direction of the workbench (1), a bending and pressing block rotating plate (215) connected with the bending and pressing block (21) through universal wheels, a plurality of first sliding rods (218) fixedly arranged on the bending and pressing block rotating plate (215), a bending and pressing block movable plate (214) slidingly connected with the plurality of first sliding rods (218), a first compression spring (219) sleeved on the first sliding rod (218), and a first tension spring (216) and a second tension spring (217), both stress ends of the first tension spring (216) are fixedly arranged on the upper side of the bending and pressing block (21) and the upper side of the bending and pressing block rotating plate (215), respectively, both stress ends of the second tension spring (217) are fixedly arranged on the lower side of the bending and pressing block (21) and the lower side of the bending and pressing block rotating plate (215), respectively, the X-axis sliding box (20) is provided with a bending and pressing block translation driving piece (211) for driving the bending and pressing block movable plate (214) to move close to / away from the fixing mechanism (4), and the X-axis sliding box (20) is provided with a bending and pressing block lifting driving piece (213) for driving the bending and pressing block movable plate (214) to lift and lower. The groove (21a) of the bending and pressing block (21) comprises a bottom surface (21c) arranged horizontally at the center, inclined surfaces (21b) arranged on the upper and lower sides of the bottom surface (21c), a plane (21d) arranged close to the chair back (5) on the inclined surface (21b), and a chamfer (21e) arranged close to the chair back (5) on the plane (21d), wherein the two inclined surfaces (21b) are distributed in a V shape, and the opening faces the chair back (5).

2. A device for automatic webbing of seat net back according to claim 1, wherein, The X-axis molding mechanism (2) further comprises a second pressing roller (22), and the second pressing roller (22) is arranged on one side of the bending and pressing block (21).

3. A device for automatic webbing of seat net back according to claim 2, wherein, The first power assembly further comprises a second rotating shell rotatably connected with the second compression roller (22), a second compression roller hinged plate (223) hinged with the second rotating shell, a plurality of second sliding rods (225) fixed on the second compression roller hinged plate (223), a second compression roller movable plate (222) slidably connected with the plurality of second sliding rods (225), a second compression spring (226) sleeved on the second sliding rod (225), and a third tension spring (224), both force receiving ends of the third tension spring (224) being fixed on the second rotating shell and the second compression roller hinged plate (223) respectively, and the X-axis sliding box (20) being provided with a second compression roller driving element (221) for driving the second compression roller (22) to move close to or away from the fixing mechanism (4).

4. A device for automatic webbing of seat net back according to claim 1, wherein, The second power assembly comprises a Y-axis sliding box (30) slidably connected along the Y-axis direction of the workbench (1), a first rotating shell rotatably connected with the first compression roller (31), a first compression roller hinged plate (315) hinged with the first rotating shell, a plurality of third sliding rods (317) fixed on the first compression roller hinged plate (315), a third compression roller movable plate (314) slidably connected with the plurality of third sliding rods (317), a third compression spring (318) sleeved on the third sliding rod (317), and a fourth tension spring (316), both force receiving ends of the fourth tension spring (316) being fixed on the first rotating shell and the first compression roller hinged plate (315) respectively, the Y-axis sliding box (30) being provided with a first compression roller translation driving element (311) for driving the first compression roller (31) to move close to or away from the fixing mechanism (4), and the Y-axis sliding box (30) being provided with a first compression roller lifting driving element (313) for driving the first compression roller (31) to lift.

5. A device for automatic webbing of seat net back according to claim 4, wherein, The second power assembly further comprises a Y-axis driving motor (32) fixed on the workbench (1), a Y-axis screw rod (321) threadedly connected with the Y-axis sliding box (30), and a mechanical transmission assembly (322), an input end of the mechanical transmission assembly (322) being fixedly connected with an output end of the Y-axis driving motor (32), and an output end of the mechanical transmission assembly (322) being fixedly connected with the Y-axis screw rod (321).

6. A device for automatic webbing of seat net back according to claim 1, wherein, The fixing mechanism (4) comprises a lower pressing servo motor (46) and a lower pressing element (47) for pressing the chair back (5), the lower pressing element (47) being fixed on an output end of the lower pressing servo motor (46).

7. A device for automatic webbing of seat net back according to claim 6, wherein, The fixing mechanism (4) further comprises a plurality of stand columns (42) for supporting the chair back (5), a plurality of first positioning rods (41) abutting against inner walls on the top of the chair back (5), a plurality of second positioning rods (43) abutting against inner walls on both sides of the chair back (5), and a plurality of third positioning rods (45) abutting against an inner wall on the bottom of the chair back (5).

8. A device for automatic webbing of seat net back according to claim 1, wherein, The top surface of the workbench (1) is obliquely arranged, the fixing mechanism (4), the X-axis pressing mechanism (2) and the two Y-axis pressing mechanisms (3) are arranged on the workbench (1) respectively, and the fixing mechanism (4) is located on the obliquely upper side of the X-axis pressing mechanism (2), and the two Y-axis pressing mechanisms (3) are located on both sides of the fixing mechanism (4) respectively.

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