Three-in-one synchronous hot melt adhesive spraying compounder and production process thereof

Abstract

The application discloses a three-in-one synchronous hot melt glue spraying compound machine, and relates to a constant-tension unwinding device, a plurality of cloth guide rollers, a deviation rectifying device, a double glue spraying device, a middle material, a bottom material on a left automatic centering constant-tension unwinding device and a surface material on a right automatic centering constant-tension unwinding device, a synchronous pressing device, a plurality of cloth guide rollers, a storage rack, an edge cutting device, an edge material collecting device, a traction device and a meter counter, and finally a double-station automatic centering constant-tension winding device. The middle material is in a vertical state when entering the synchronous pressing device, and the distance between the middle material and the bottom material and the surface material is the same. The row type glue spraying head on the double glue spraying device can be translated, lifted and rotated. The application has a reasonable structure and scientific layout. The double glue spraying device and the synchronous pressing device are adopted, the accurate glue spraying of three-layer materials with any proportion is realized, the accurate symmetrical limiting is achieved, the product quality and the production efficiency are greatly improved, the application range is wide, and the application is worth promoting.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of composite machinery, and particularly relates to a three-in-one synchronous hot melt glue spraying composite machine and a production process thereof. BACKGROUND

[0002] Hot melt glue spraying composite machines are used in the automotive interior, leather, belt, conveyor belt and other industries. The existing composite machines need to be glued twice to produce three-layer materials. The raw materials are first glued and then compounded to form two-layer composite materials, and then the second gluing and the second compounding are performed to form three-layer composite materials. This two-time gluing compounding method not only has low work efficiency and high production cost, but also has a relatively high product failure rate. At present, there are a small number of three-in-one synchronous hot melt glue spraying composite equipment, but different composite materials have different adhesive properties, and the face material, the base material and the middle material may have different gluing combinations, such as two-side gluing of the middle material (no gluing of the base material and the face material), gluing of the base material and the face material (no gluing of the middle material), and gluing of the three-layer material in different proportions. Different combinations require different equipment, resulting in single products and failing to meet the production needs.

[0003] On the other hand, in the three-in-one synchronous hot melt glue spraying compounding process, the middle material cannot be always guaranteed to be between the two pressing rolls, and the inconsistent pressure on both sides will cause problems in product quality.

[0004] In order to solve the above problems, scientific and technological personnel of research institutions have continuously researched and explored, developed new three-in-one composite equipment, although certain progress has been made in technology, but there are still unsolved technical problems in actual application. SUMMARY

[0005] To solve the above problems, the present application discloses a three-in-one synchronous hot melt glue spraying composite machine and a production process thereof, which are optimized in design and layout, adopt double glue spraying devices and synchronous pressing devices, realize accurate gluing of three-layer materials in any proportion, and can achieve accurate symmetrical limiting, greatly improving product quality and production efficiency.

[0006] To achieve the above purpose, the technical scheme of the present application is as follows:

[0007] A three-in-one synchronous hot melt glue spraying compound machine, comprising a constant tension unwinding device, a cloth guide roller, a left automatic centering constant tension unwinding device, a deviation rectifying device, a double glue spraying device, a synchronous pressing device, a right automatic centering constant tension unwinding device, a storage rack, an edge cutting device, an edge material collecting device, a traction device, a meter counter, and a double-station automatic centering constant tension winding device, wherein the middle material on the constant tension unwinding device enters the synchronous pressing device together with the bottom material on the left automatic centering constant tension unwinding device and the surface material on the right automatic centering constant tension unwinding device from the double glue spraying device through a plurality of cloth guide rollers and the deviation rectifying device, and the compounded finished product material is wound by the double-station automatic centering constant tension winding device after passing through a plurality of cloth guide rollers, the storage rack, the edge cutting device, the edge material collecting device, the traction device, and the meter counter, wherein the middle material is in a vertical state when entering the synchronous pressing device, and the distance from the bottom material and the surface material is the same, and the row-type glue spraying head on the double glue spraying device can translate, lift, and rotate.

[0008] As an improvement of the present application, the double glue spraying device comprises a double glue spraying device frame, two sets of lathe drag plates, a support, a row-type glue spraying head, a lifting machine mounting seat, a lifting machine, a worm gear, a worm, a bearing with seat, a left guide plate, a bearing, a connecting rod, a universal coupling, a servo motor, a right guide plate, and a bearing seat, wherein the two sets of lathe drag plates are installed on the left and right sides of the double glue spraying device frame, the support is arranged on the lathe drag plate, the row-type glue spraying head is supported on the bearing seat through the bearing, a pair of sliding pairs are formed by the left and right bearing seats and the support after the left and right bearing seats are respectively installed with the left and right guide plates, the left and right bearing seats are respectively connected with one lifting machine, the lifting machine is installed on the lifting machine mounting seat, the lifting machine mounting seat is installed on the support, the two lifting machines are connected through the connecting rod and the universal coupling, one of the lifting machines is provided with the servo motor, and the worm gear at one end of the row-type glue spraying head is supported on the left guide plate through the bearing with seat.

[0009] As an improvement of the present application, the synchronous pressing device comprises a synchronous pressing device support, a guide strip, a sliding seat, an aluminum shell reduction motor, two sets of air cylinders, a connecting head, a bearing, a rubber roller, and a symmetrical limiting device, wherein the synchronous pressing device support provided with the guide strip is installed on the double glue spraying device frame, the rubber roller provided with the aluminum shell reduction motor is supported on the sliding seat through the bearing, the sliding seat is supported on the synchronous pressing device support through the guide strip, the left and right sets of air cylinders installed on the pressing device support are connected with the sliding seat through the connecting head, and the symmetrical limiting device is arranged between the left and right sliding seats.

[0010] As an improvement of the present application, the symmetrical limiting device comprises a left limiting adjustment seat, a limiting adjustment screw, a limiting linkage screw sleeve, a synchronous pulley, a right limiting adjustment seat and a fastening screw, the left limiting adjustment seat provided with a left-hand thread hole and the right limiting adjustment seat provided with a right-hand thread hole are both installed on the synchronous pressing device support through the fastening screw, the limiting adjustment screws with left and right different threads are respectively installed on the left-hand thread hole of the left limiting adjustment seat and the right-hand thread hole of the right limiting adjustment seat, the hexagonal head of the limiting adjustment screw with left and right different threads is slidingly matched in the hexagonal hole of the limiting linkage screw sleeve, the synchronous pulley is installed on the outer hexagonal head of the limiting linkage screw sleeve, and the synchronous pulley is connected with the servo motor through a synchronous belt.

[0011] As an improvement of the present application, the upper part of the double glue spraying device rack is provided with a support frame, the cloth guide roller and the deviation rectifying device are installed on the support frame, the support frame is provided with a discharge port, and the middle material vertically downwardly reaches the middle position of the double glue spraying device from the discharge port.

[0012] As an improvement of the present application, the left automatic centering constant tension unwinding device and the right automatic centering constant tension unwinding device are symmetrically arranged on the two sides of the middle position of the double glue spraying device.

[0013] As an improvement of the present application, the outer side of the lathe drag plate is provided with an adjusting handle.

[0014] The present application has the following beneficial effects:

[0015] (1) The three-in-one synchronous hot melt glue spraying compound machine disclosed by the present application adopts the automatic centering constant tension unwinding device to drive the bottom material and the surface material close to the synchronous pressing device, adopts the constant tension unwinding device to drive the middle material far from the synchronous pressing device, and sets the deviation rectifying device at a position not far from the upper part of the synchronous pressing device, so that the tension of the three layers of materials can be kept constant, and the materials can be kept centered during compounding, thereby greatly improving the neatness of compounding.

[0016] (2) The double glue spraying device provided by the present application can realize translation through the lathe drag plate, accurate lifting through the elevator electric servo lifting, and accurate rotation through the worm and gear, can glue the two surfaces of the middle material (the bottom material and the surface material are not glued), can glue the bottom material and the surface material (the middle material is not glued), and can glue the three layers of materials according to different proportions, realizes the combination of different glue sticking characteristics of different materials with any amount of glue, and solves the problems existing in the original equipment.

[0017] (3) The synchronous pressing device provided by the present application guarantees that the middle material is always at the center line position regardless of the thickness of the material through the symmetrical limiting device, ensures the glueing precision, and greatly improves the product quality.

[0018] (4), optimization design, layout is reasonable, the land space is smaller, realizes the accurate gluing of three layers of material in any proportion, greatly improves product quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the application.

[0020] Figure 2 It is the structural schematic diagram of the double glue spraying device.

[0021] Figure 3 It is the structural schematic diagram of the synchronous pressing device.

[0022] Figure 4 It is the structural schematic diagram of the symmetrical limiting device.

[0023] Figure 5 It is the driving schematic diagram of the symmetrical limiting device.

[0024] Figure 6 It is the limiting adjusting screw structural schematic diagram of the symmetrical limiting device.

[0025] Figure 7 It is the limiting linkage screw nut structural schematic diagram of the symmetrical limiting device.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1. constant tension unwinding device, 2. cloth guide roller, 3. left automatic centering constant tension unwinding device, 4. deviation rectifying device, 5. double glue spraying device, 6. synchronous pressing device, 7. right automatic edge aligning constant tension unwinding device, 8. storage rack, 9. edge cutting device, 10. edge material collecting device, 11. traction device, 12, meter counter, 13. double-station constant tension winding device, 14. middle material, 15. bottom material, 16. face material, 17. finished product material, 18. double glue spraying device rack, 19. lathe drag plate, 20. support, 21. row type glue spraying head, 22. elevator mounting seat, 23. elevator, 24. worm gear, 25. worm, 26. bearing with seat, 27. left guide plate, 28. bearing, 29. connecting rod, 30. universal coupling, 31. servo motor, 32. right guide plate, 33. bearing seat, 34. synchronous pressing device support, 35. guide strip, 36. air cylinder, 37. connecting head, 38. slide, 39. bearing, 40. rubber roller, 41. symmetrical limiting device, 42. aluminum shell reduction motor, 43. left limiting adjustment seat, 44. left-hand thread hole, 45. limiting adjustment screw, 46. limiting linkage screw sleeve, 47. synchronous pulley, 48. right-hand thread hole, 49. right limiting adjustment seat, 50. fastening screw, 51. synchronous belt, 52. servo motor, 53, screw thread, 54, hexagonal head, 55. hexagonal hole, 56. outer hexagonal, 101. support frame, 191. adjusting handle. DETAILED DESCRIPTION

[0028] The application will be further clarified by the following description and examples, which should be considered as illustrating rather than limiting the application.

[0029] As shown in the drawings, Figure 1 A three-in-one synchronous hot melt glue spraying compound machine according to the present application includes a constant tension unwinding device 1, a cloth guide roller 2, a left automatic centering constant tension unwinding device 3, a deviation rectifying device 4, a double glue spraying device 5, a synchronous pressing device 6, a right automatic centering constant tension unwinding device 7, a storage rack 8, an edge cutting device 9, an edge material collecting device 10, a traction device 11, a meter counter 12, and a double-station automatic centering constant tension winding device 13. The middle material 14 on the constant tension unwinding device 1 enters the synchronous pressing device 6 together with the bottom material 15 on the left automatic centering constant tension unwinding device 3 and the face material 16 on the right automatic centering constant tension unwinding device 7 from the middle of the double glue spraying device 5 along multiple sets of cloth guide rollers 2 and deviation rectifying devices 4. The finished product material 17 after compounding is wound on the double-station automatic centering constant tension winding device 13 after passing through multiple sets of cloth guide rollers, a storage rack 8, an edge cutting device 9, an edge material collecting device 10, a traction device 11, and a meter counter 12.

[0030] Two cylinders in the storage rack 8 drive two conveying racks to move up and down, increase the distance between the upper and lower conveying racks, prolong the conveying distance, realize the tension compensation, prevent the composite material from piling up during cutting and affecting the subsequent cutting work; and the finished product material 17 after compounding also plays a role of natural cooling during passing through the storage rack 8, so that the temperature of the finished product material 17 after compounding is reduced to room temperature.

[0031] The finished product material 17 out of the storage rack 8 is cut by the edge cutting device 9, and the edge material after cutting falls into the edge material collecting device 10 below, preventing the edge material from piling up and affecting normal operation; wherein the edge material collecting device 10 is an independent device and can be taken out and cleaned.

[0032] The traction device 11 can drive the finished product material 17 to move to the winding device 13, and the meter counter 12 can count the moving distance.

[0033] The main invention points of the present application are:

[0034] (1) The middle material 14 enters the synchronous pressing device 6 in a vertical state, and the distance from the bottom material 15 and the surface material 16 is the same, so that the forces on both sides are the same;

[0035] (2) The row type glue spraying head 21 on the double glue spraying device can translate, lift and rotate, and can spray glue on the middle material and / or the bottom material 15 and / or the surface material 16, solving the problem of material diversity.

[0036] In addition, the bottom material 15 and the surface material 16 close to the synchronous pressing device 6 in the present application all adopt the automatic centering constant tension unwinding device, the middle material 14 far away from the synchronous pressing device 6 adopts the constant tension unwinding, and the deviation correcting device 4 is arranged not far above the synchronous pressing device 6, so that the tension of the three layers of materials can be kept constant, and the materials can be kept centered during compounding.

[0037] For example Figure 2As shown, the double glue spraying device comprises a double glue spraying device rack 18 and two sets of lathe tailboards 19, supports 20, row type glue spraying heads 21, elevator mounting seats 22, elevators 23, worm wheels 24, worm shafts 25, bearing seats 26, left guide plates 27, bearings 28, connecting rods 29, universal couplings 30, servo motors 31, right guide plates 32, bearing seats 33, the two sets of lathe tailboards 19 are installed on the left and right sides of the plane of the double glue spraying device rack 18, the supports 20 are arranged on the lathe tailboards 19, and the outer sides of the lathe tailboards 19 are provided with adjusting handles 191; the row type glue spraying heads 21 are supported on the bearing seats 33 through the bearings 28, the left and right bearing seats 33 are respectively installed with the left guide plates 27 and the right guide plates 32, and the left and right bearing seats 33 are connected with one elevator 23 respectively, the elevators 23 are installed on the elevator mounting seats 22, the elevator mounting seats 22 are installed on the supports 20, the two elevators 23 are connected through the connecting rods 29 and the universal couplings 30, one of the elevators 23 is provided with the servo motor 31, the worm wheel 24 is arranged at one end of the row type glue spraying head 21, and the worm shaft 25 matched with the worm wheel 24 is supported on the left guide plate 27 through the bearing seat 26.

[0038] During work, the elevators 23 are driven by the servo motors 31, so that the row type glue spraying heads 21 can be accurately positioned. The worm shaft 25 drives the worm wheel 24, so that the row type glue spraying heads 21 can be adjusted at any angle (can be vertically downward, can be horizontally, and can be opposite to the front and back surfaces of the middle material 14 to spray glue). When the two row type glue spraying heads 21 are adjusted to be vertically downward, the bottom material 15 and the surface material 16 are glued respectively, so that the bottom material 15, the surface material 16 and the middle material 14 are compounded, when the two row type glue spraying heads 21 are adjusted to be horizontal, the two surfaces of the middle material 14 are glued, and the row type glue spraying heads 21 can be adjusted to be inclined, so that the middle material 14, the bottom material 15 or the middle material 14 and the surface material 16 are glued, so that the combination of different glue sticking characteristics of different materials and different glue spraying amounts is realized, and the problem of material diversity is solved.

[0039] In addition, the double glue spraying device can also drive the lathe tailboards 19 to move by rotating the adjusting handles 191, so that the distance between the two sets of glue spraying devices can be adjusted. The elevators 23 can be accurately lifted by electric servo lifting, so that the middle three layers of materials can be glued according to the needs, the application range is wide, and the fixing effect is good.

[0040] As Figure 3As shown in the figure, the synchronous pressing device 6 of the application comprises a synchronous pressing device support 34, a guide strip 35, a sliding seat 38, an aluminum shell reduction motor 42, and two sets of air cylinders 36, a connecting head 37, a bearing 39, a rubber roller 40, and a symmetrical limiting device 41. The synchronous pressing device support 34 provided with the guide strip 35 is installed on the double glue spraying device rack 18. The rubber roller 40 provided with the aluminum shell reduction motor 42 is supported on the sliding seat 38 through the bearing 39 (the sliding seat is in the horizontal direction). The sliding seat 38 is supported on the synchronous pressing device support 34 through the guide strip 35. The left and right two sets of air cylinders 36 installed on the pressing device support 34 are connected with the sliding seat 38 through the connecting head 37. The symmetrical limiting device 41 is installed between the left and right two sliding seats 38. When working, the two sets of air cylinders 36 push the rubber roller 40 to move horizontally relative to (or away from) each other synchronously.

[0041] As shown in the figure, Figure 4 As shown in the figure, the symmetrical limiting device 41 of the application comprises a left limiting adjustment seat 43, a limiting adjustment screw 45, a limiting linkage screw sleeve 46, a synchronous pulley 47, a right limiting adjustment seat 49, and a fastening screw 50. The left limiting adjustment seat 43 provided with a left-hand thread hole 44 and the right limiting adjustment seat 49 provided with a right-hand thread hole 48 are both installed on the synchronous pressing device support 34 through the fastening screw 50. The limiting adjustment screws 45 of the left and right two different threads are respectively installed on the left-hand thread hole 44 of the left limiting adjustment seat 43 and the right-hand thread hole 48 of the right limiting adjustment seat 49. The hexagonal head 54 of the limiting adjustment screw 45 of the left and right two different threadings 53 is slidingly fitted in the hexagonal hole 55 of the limiting linkage screw sleeve 46. The outer hexagon 56 of the limiting linkage screw sleeve 46 is provided with the synchronous pulley 47. The synchronous pulley 47 is connected with the servo motor 52 through the synchronous belt 51. When working, the limiting adjustment screw 45 is driven by the servo motor 52 and the synchronous belt 51 to move synchronously and reversely, so as to realize the accurate symmetrical limiting.

[0042] The double glue spraying device rack 18 of the application is provided with a support frame 101 above. The cloth guide roller 2 and the deviation correcting device 4 are installed on the support frame 101. The support frame 101 is provided with a discharge port (the discharge port is directly above the double glue spraying device 5). The middle material 14 vertically reaches the middle position of the double glue spraying device 5 from the discharge port. The accurate positioning of the symmetrical limiting device 41 ensures that the middle material can always be in the middle line position regardless of the thickness of the material, so as to ensure the gluing accuracy and greatly improve the product quality.

[0043] The production process of the three-in-one synchronous hot melt glue spraying compound machine of the application comprises the following steps:

[0044] (1) feeding: the middle material 14 is sent out from the constant tension unwinding device 1, passes through a plurality of cloth guide rollers 2 above the support frame 101, a deviation rectifying device 4, and then vertically reaches the middle of the synchronous pressing device 6; the bottom material 15 is sent out from the left automatic centering constant tension unwinding device 3, reaches the left side of the synchronous pressing device 6; the surface material 16 is sent out from the right automatic centering constant tension unwinding device 7, reaches the right side of the synchronous pressing device 6;

[0045] (2) the distance between the two sets of glue spraying devices is adjusted by rotating the adjusting handle 191 to drive the lathe apron 19 to move; the lifting distance of the row type glue spraying head 21 is adjusted by the elevator 23; the rotation angle of the row type glue spraying head 21 is adjusted by the worm wheel 24 and the worm 25, so as to glue the middle material 14 and / or the bottom material 15 and the surface material 16;

[0046] (3) the middle material 14, the bottom material 15 and the surface material 16 meet in the middle of the synchronous pressing device 6, enter between the two glue rollers 40 of the synchronous pressing device 6 for compounding, and the limiting adjusting screw 45 of the symmetrical limiting device 41 is adjusted to move reversely synchronously, so as to ensure that the middle material 14 is always in the middle line position;

[0047] (4) the compounded finished material 17 is along the storage rack 8, the edge cutting device 9, the edge material collecting device 10, the traction device 11 and the meter counter 12, and finally is wound by the double-station automatic centering constant tension winding device 13.

[0048] The present application has reasonable structure and scientific layout, adopts double glue spraying devices and a synchronous pressing device (which is internally provided with a symmetrical limiting device 41), realizes accurate glue spraying of three-layer materials with any proportion, can realize accurate symmetrical limiting, greatly improves product quality and production efficiency, has wide application range and is worth promoting.

[0049] It should be noted that the above content only illustrates the technical idea of the present application, and cannot limit the protection scope of the present application. For ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the present application, and these improvements and refinements all fall within the protection scope of the present application.

Claims

1. A three-in-one simultaneous hot melt adhesive applicator, characterized in that: The application relates to a double-glue-spraying device, which comprises a constant-tension unwinding device (1), a cloth guide roller (2), a left automatic-centering constant-tension unwinding device (3), a deviation rectifying device (4), a double-glue-spraying device (5), a synchronous pressing device (6), a right automatic-centering constant-tension unwinding device (7), a storage rack (8), an edge cutting device (9), an edge material collecting device (10), a traction device (11), a meter counter (12) and a double-station automatic-centering constant-tension winding device (13). The synchronous pressing device (6) comprises a synchronous pressing device support (34), a guide strip (35), a sliding seat (38), an aluminum shell reduction motor (42) and two groups of air cylinders (36), a connecting head (37), a bearing, a rubber roller (40) and symmetrical limiting devices (41). The rubber roller (40) provided with the aluminum shell reduction motor (42) is supported on the sliding seat (38) through the bearing, the sliding seat (38) is supported on the synchronous pressing device support (34) through the guide strip (35), the left and right air cylinders (36) installed on the pressing device support (34) are connected with the sliding seat (38) through the connecting head (37), and the symmetrical limiting devices (41) are arranged between the left and right sliding seats (38). The symmetrical limiting devices (41) comprise a left limiting adjusting seat (43), a limiting adjusting screw (45), a limiting linkage screw sleeve (46), a synchronous pulley (47), a right limiting adjusting seat (49) and a fastening screw (50). The left limiting adjusting seat (43) provided with a left screw thread hole (44) and the right limiting adjusting seat (49) provided with a right screw thread hole (48) are installed on the synchronous pressing device support (34) through the fastening screw (50), the limiting adjusting screws (45) with different threads are respectively installed on the left screw thread hole (44) of the left limiting adjusting seat (43) and the right screw thread hole (48) of the right limiting adjusting seat (49), the hexagonal heads (54) of the limiting adjusting screws (45) with different screw threads (53) are slidingly matched in the hexagonal holes (55) of the limiting linkage screw sleeves (46), the outer hexagon (56) of the limiting linkage screw sleeves (46) is provided with the synchronous pulley (47), and the synchronous pulley (47) is connected with a servo motor through a synchronous belt (51).

2. A three-in-one synchronous hot melt adhesive lamination machine according to claim 1, characterized in that: The double glue spraying device (5) comprises a double glue spraying device rack (18), two sets of lathe tailboards (19), supports (20), row type glue spraying heads (21), elevator mounting seats (22), elevators (23), worm wheels (24), worm shafts (25), bearing seats (26), left guide plates (27), bearings, connecting rods (29), universal couplings (30), servo motors, right guide plates (32), bearing seats (33), and synchronous pressing device support frames (34) provided with guide strips (35) are mounted on the double glue spraying device rack (18), the two sets of lathe tailboards (19) are mounted on the left and right sides of the plane of the double glue spraying device rack (18), the supports (20) are arranged on the lathe tailboards (19), the row type glue spraying heads (21) are supported on the bearing seats (33) through bearings, the left and right bearing seats (33) are respectively mounted on the left and right guide plates (27) and the right guide plates (32) and are connected with the supports (20) to form a pair of sliding pairs, the left and right bearing seats (33) are respectively connected with one of the elevators (23), the elevators (23) are mounted on the elevator mounting seats (22), the elevator mounting seats (22) are mounted on the supports (20), the two elevators (23) are connected through the connecting rods (29) and the universal couplings (30), one of the elevators (23) is provided with the servo motor, the worm wheel (24) is arranged at one end of the row type glue spraying head (21), and the worm shaft (25) matched with the worm wheel (24) is supported on the left guide plate (27) through the bearing seat (26).

3. A three-in-one synchronous hot melt adhesive lamination machine according to claim 2, characterized in that: The double glue spraying device rack (18) is provided with a supporting frame (101), the cloth guide rollers (2) and the deviation rectifying devices (4) are mounted on the supporting frame (101), the supporting frame (101) is provided with a discharge port, and the middle material (14) vertically downwardly reaches the middle position of the double glue spraying device (5) from the discharge port.

4. A three-in-one simultaneous hot melt adhesive lamination machine as claimed in claim 1, wherein: The left and right automatic centering constant-tension unwinding devices (3) and (7) are symmetrically arranged at the left and right sides of the middle position of the double glue spraying device (5).

5. A three-in-one synchronous hot melt adhesive lamination machine according to claim 2, characterized in that: The lathe tailboards (19) are provided with adjusting handles (191) on the outer sides.

6. The process for producing a three-in-one simultaneous hot melt adhesive lamination machine according to claim 5, characterized in that: The method comprises the following steps: (1) material unwinding: the middle material (14) is unwound from the constant-tension unwinding device (1), vertically passes through the multiple cloth guide rollers (2) and the deviation rectifying devices (4) above the supporting frame (101), and reaches the middle position of the synchronous pressing device (6) above; the bottom material (15) is unwound from the left automatic centering constant-tension unwinding device (3), and reaches the left side of the synchronous pressing device (6) above; and the face material (16) is unwound from the right automatic centering constant-tension unwinding device (7), and reaches the right side of the synchronous pressing device (6) above; (2) the spacing between the two sets of glue spraying devices is adjusted by rotating the adjusting handles (191) to drive the lathe tailboards (19) to move; the lifting distance of the row type glue spraying heads (21) is adjusted by the elevators (23); the rotation angle of the row type glue spraying heads (21) is adjusted by the worm wheels (24) and the worm shafts (25); and the glue spraying on the middle material (14) and / or the bottom material (15) and the face material (16) is completed. (3) The middle material (14), the bottom material (15) and the surface material (16) meet in the middle of the synchronous pressing device (6) and enter between the two rubber rollers (40) of the synchronous pressing device (6) to be compounded. The limiting adjustment screw (45) of the symmetrical limiting device (41) is adjusted synchronously and reversely to ensure that the middle material (14) is always in the middle line position; (4) The finished product material (17) after compounding is rolled along the storage rack (8), the edge cutting device (9), the edge material collecting device (10), the traction device (11), the meter counter (12) and finally the double-station automatic centering constant-tension winding device (13).

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