Hot melt film forming machine

Abstract

The present invention discloses a hot melt film forming machine, which belongs to the field of coil manufacturing technology. The hot melt film forming machine includes a support frame and a connecting frame installed on the outer wall of the support frame. The outer wall of the support frame is provided with a driving component for driving the lower mold to move, the outer wall of the connecting frame is provided with a glue injection component for injecting material into the lower mold, and the outer wall of the connecting frame is provided with a cooling component for cooling the film. By alternating three groups of lower molds in sequence, an assembly line processing mode integrating glue injection, cooling and demolding is realized during the processing of hot melt films, which greatly improves the processing efficiency of hot melt films. By vacuuming the melt chamber and the gel space twice, the occurrence of bubbles during the processing of hot melt films in both the melt and injection directions can be reduced. At the same time, the coolant remaining in the cooling tank is recovered before injection, which reduces the unevenness of the surface of the hot melt film caused by the rapid solidification of the hot melt glue.

Description

Technical Field

[0001] The present invention relates to the technical field of hot melt adhesive sheet manufacturing, in particular to a hot melt adhesive sheet forming machine. Background Art

[0002] Hot melt adhesive is a plastic adhesive that achieves physical state transformation (solid ↔ liquid) through temperature changes. It is non-toxic, environmentally friendly, and has fast bonding speed. Hot melt adhesive sheet, as one of its forms, has high film strength, weather resistance, and waterproof properties. It is suitable for composite bonding of materials such as plastics, wood, and metal, and is adapted to the precision processing needs of automotive parts, electronic components, etc.

[0003] Chinese patent CN118386522A published on July 26, 2024 discloses a hot melt film forming machine and forming process. After the film is hot-pressed, a rapid pre-cooling device is used to perform single-sided cooling on the side of the hot melt film located on the upper conveyor belt. Due to the different cooling orders, the hot melt film will be separated from the conveyor belts on both sides and no longer adhere, thereby reducing the defective rate caused by this. However, when the hot melt film forming machine and forming process are hot-pressing the film, air can easily enter the interior of the hot melt adhesive and form bubbles, thereby reducing the quality of the product after the film is formed, making it still relatively inconvenient to use. Summary of the Invention

[0004] The object of the present invention is to provide a hot melt film forming machine to solve the problems raised in the above background technology.

[0005] The transmission gear of the present invention is connected with the gear train of the said lower mold, and the transmission gear of the said lower mold is connected with the gear train of the said lower mold by the gear train of the said lower mold.

[0006] The glue injection assembly includes a melt bin mounted on the outer wall of the connecting frame for heating hot melt adhesive particles, and a vacuum pump mounted on the outer wall of the top end of the melt bin, a suction pipe adapted to the melt bin is provided on the outer wall of one end of the vacuum pump, a second telescopic tube adapted to the suction pipe is provided on the inner wall of the melt bin, a push rod is fixedly connected to the inner wall of the melt bin at the center position of the second telescopic tube, a threaded rod is rotatably connected to the inner wall of the melt bin, an extrusion plate is threadedly connected on the outer wall of the threaded rod, a through hole adapted to the second telescopic tube is provided on the outer wall of the extrusion plate, a connecting column is slidably connected to the inner wall of the extrusion plate, a limiting plate adapted to the through hole is provided on the outer wall of one end of the connecting column, and a first limiting spring adapted to the connecting column is provided on the inner wall of the extrusion plate;

[0007] The limiting plates are slidably connected to the extrusion plates via the connecting columns, and multiple groups of limiting plates are provided on the surface of the connecting columns;

[0008] The glue injection assembly also includes a first telescopic tube and an air extraction mechanism installed on the outer wall of the bottom end of the melt bin, an upper mold is fixedly connected to the outer wall of the bottom end of the first telescopic tube, an electric valve is installed between the first telescopic tube and the upper mold, a cylinder is fixedly connected to the inner wall of the connecting frame, a connecting block is fixedly connected to the outer wall of the bottom end of the cylinder, a sliding groove adapted for the connecting block is provided on the outer wall of the upper mold, an empty bin is opened on the inner wall of the connecting frame, a second limit spring is fixedly connected to the inner wall of the empty bin, and the second limit spring A piston plate adapted to the empty chamber is provided on the outer wall of one end, a connecting rod adapted to the connecting block is provided on the outer wall of the piston plate, a pull rope is fixedly connected to the outer wall of the top end of the piston plate, and the pull rope includes a spring rope and a nylon rope. A rotating sleeve is rotatably connected to the inner wall of the melt chamber, a mainspring adapted to the rotating sleeve is provided on the inner wall of the melt chamber, a ratchet adapted to the nylon rope is provided on the outer wall of one end of the rotating sleeve, a pawl adapted to the ratchet is provided on the outer wall of the threaded rod, and a spring sheet adapted to the pawl is provided on the outer wall of the threaded rod;

[0009] The vacuum mechanism includes an electric three-way valve installed on the outer wall of the suction pipe, and a through groove opened on the inner wall of the upper mold. A rubber pad is bonded to the top outer wall of the lower mold. A vacuum hose adapted to the through groove is provided on the outer wall of one end of the electric three-way valve. A guide plate is fixedly connected to the inner wall of the bottom end of the upper mold, and multiple groups of V-shaped diverter plates adapted to the through grooves are provided on the outer wall of the guide plate.

[0010] Furthermore, the driving assembly also includes a limiting column and a demoulding mechanism installed on the outer wall of the fixed block, a guide groove adapted for the support shaft is provided on the outer wall of the support frame, and a limiting groove adapted for the limiting column is provided on the outer wall of the support frame.

[0011] Furthermore, the demoulding mechanism includes a connecting plate arranged on the inner wall of the lower mold, and a top plate installed on the outer wall of the support frame, push rods are evenly distributed on the top outer wall of the connecting plate, a pressing spring adapted to the connecting plate is arranged on the inner wall of the lower mold, a limiting block is fixedly connected to the outer wall of the connecting plate, and a push plate adapted to the top plate is arranged on the bottom outer wall of the connecting plate.

[0012] Furthermore, the cooling assembly includes a liquid storage tank and a recovery mechanism installed on the outer wall of the support frame for storing coolant, a water pump adapted to the liquid storage tank is provided on the outer wall of the support frame, a water outlet pipe is installed on the outer wall of the water pump, a water outlet telescopic pipe adapted to the water outlet pipe is provided on the inner wall of the support frame, a water outlet joint is installed on the outer wall of one end of the water outlet telescopic pipe, a water outlet spring adapted to the water outlet joint is provided on the inner wall of the support frame, a cooling groove is provided on the inner wall of the lower mold, the cooling groove includes a liquid inlet, a cooling channel and a liquid outlet, a drainage telescopic pipe is installed on the inner wall of the support frame, and an outlet is provided on the outer wall of one end of the drainage telescopic pipe. A drainage joint adapted for the liquid port, a water inlet pipe adapted for the liquid storage tank is provided on the outer wall of one end of the drainage telescopic tube, a drainage spring adapted for the drainage joint is provided on the inner wall of the support frame, a first connecting spring is fixedly connected to the inner wall of the liquid inlet, a first blocking plate adapted for the water outlet joint is provided on the outer wall of one end of the first connecting spring, the outer edge of the first blocking plate has first notches distributed at equal intervals along the circumferential direction, a second connecting spring is fixedly connected to the inner wall of the liquid outlet, a second blocking plate adapted for the drainage joint is provided on the outer wall of one end of the second connecting spring, the outer edge of the second blocking plate has second notches distributed at equal intervals along the circumferential direction.

[0013] Furthermore, the recovery mechanism includes an auxiliary water inlet pipe arranged on the outer wall of the water inlet pipe, and an exhaust pipe installed on the inner wall of the connecting frame and adapted to the empty chamber, an auxiliary drainage telescopic pipe adapted to the auxiliary water inlet pipe is provided on the inner wall of the support frame, an auxiliary drainage joint adapted to the liquid outlet is provided on the outer wall of one end of the auxiliary drainage telescopic pipe, an auxiliary drainage spring adapted to the auxiliary drainage joint is provided on the inner wall of the support frame, an exhaust telescopic pipe is fixedly connected to the outer wall of one end of the exhaust pipe, an exhaust joint adapted to the liquid inlet is provided on the outer wall of one end of the exhaust telescopic pipe, and an exhaust spring adapted to the exhaust joint is provided on the inner wall of the connecting frame.

[0014] The difference from the prior art is that the beneficial effect of the present application is that: the hot melt film forming machine, through the successive alternation of three groups of lower molds, realizes a streamlined processing mode that integrates injection, cooling and demolding during the processing of hot melt films, which greatly improves the processing efficiency of hot melt films. By vacuuming the melt chamber and the gel space twice, it can reduce the occurrence of bubbles during the processing of hot melt films in both the melting and injection directions. At the same time, the coolant remaining in the cooling tank is recovered before injection, which reduces the uneven surface of the hot melt film caused by the rapid solidification of the hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0016] Figure 2 This is a side structural diagram of the support frame of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the auxiliary gear and chain cooperating with each other in the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed block and the support shaft cooperating with each other in the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the fixed block and the limiting column cooperating with each other in the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the guide groove and the limit groove cooperating with each other in the present invention;

[0021] Figure 7 This is a schematic diagram of the structure of the melt bin and the first telescopic tube cooperating with each other in the present invention;

[0022] Figure 8 This is a schematic diagram of the structure of the threaded rod and the extruded plate cooperating with each other in the present invention;

[0023] Figure 9 This is a schematic diagram of the structure of the guide plate and the V-shaped diverter plate cooperating with each other in the present invention;

[0024] Figure 10 This is a schematic diagram of the structure of the rotary sleeve and the ratchet wheel cooperating with each other in the present invention;

[0025] Figure 11 This is a schematic diagram of the structure of the ratchet and the pawl cooperating with each other in the present invention;

[0026] Figure 12 This is a schematic diagram of the structure of the water outlet pipe and the water inlet pipe cooperating with each other in the present invention;

[0027] Figure 13 This is a schematic diagram of the cooling tank structure of the present invention;

[0028] Figure 14 This is a schematic diagram of the structure of the first blocking plate and the first notch cooperating with each other in the present invention;

[0029] Figure 15 This is a schematic diagram of the structure in which the second blocking plate and the second notch cooperate with each other in the present invention;

[0030] Figure 16 This is a schematic diagram of the structure of the connection plate and the push rod cooperating with each other in the present invention;

[0031] Figure 17 This is a schematic diagram of the structure of the connection plate and the push plate cooperating with each other in the present invention;

[0032] Figure 18 For the present invention Figure 8 A in the middle is an enlarged structural diagram;

[0033] Figure 19 For the present invention Figure 8 The enlarged structural diagram at B in the middle;

[0034] Figure 20 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0035] Figure 21 For the present invention Figure 8 The enlarged structural diagram at D in the middle;

[0036] Figure 22 For the present invention Figure 12 The enlarged structural diagram at E in the middle;

[0037] Figure 23 For the present invention Figure 12 The enlarged structural diagram at F in the middle;

[0038] Figure 24 For the present invention Figure 12 The schematic diagram of the structure at G in the middle is enlarged;

[0039] Figure 25 For the present invention Figure 8 Enlarged structural diagram at H in the middle.

[0040] In the figure: 1. Support frame; 2. Auxiliary gear; 3. Chain; 4. Fixed block; 5. Support shaft; 6. Limiting column; 7. Guide groove; 8. Limiting groove; 9. Lower mold; 901. Lower mold 1; 902. Lower mold 2; 903. Lower mold 3; 10. Rubber pad; 11. Connecting frame; 12. Connecting shaft; 13. Transmission gear; 14. Motor; 15. Melting chamber; 16. First telescopic tube; 17. Upper mold; 18. Electric valve; 19. Cylinder; 20. Connecting Connecting block; 21. Slide; 22. Vacuum pump; 23. Suction pipe; 24. Electric three-way valve; 25. Vacuum hose; 26. Second telescopic tube; 27. Ejector rod; 28. Threaded rod; 29. Extrusion plate; 30. Through hole; 31. Connecting column; 32. Limit plate; 33. First limit spring; 34. Through groove; 35. Guide plate; 36. V-shaped manifold; 37. Empty chamber; 38. Second limit spring; 39. Piston plate; 40. Connecting rod; 41. Pull rope; 411. Spring rope; 412, nylon rope; 42, rotating sleeve; 43, clockwork; 44, ratchet; 45, pawl; 46, spring plate; 47, liquid storage tank; 48, water pump; 49, water outlet pipe; 50, water outlet telescopic pipe; 51, water outlet joint; 52, water outlet spring; 53, cooling trough; 531, liquid inlet; 532, cooling channel; 533, liquid outlet; 54, drainage telescopic pipe; 55, drainage joint; 56, water inlet pipe; 57, drainage spring; 58, auxiliary inlet Water pipe; 59. Auxiliary drainage telescopic pipe; 60. Auxiliary drainage joint; 61. Auxiliary drainage spring; 62. Exhaust pipe; 63. Exhaust telescopic pipe; 64. Exhaust joint; 65. Exhaust spring; 66. First connecting spring; 67. First blocking plate; 68. First notch; 69. Second connecting spring; 70. Second blocking plate; 71. Second notch; 72. Connecting plate; 73. Push rod; 74. Pressing spring; 75. Limiting block; 76. Push plate; 77. Top plate. DETAILED DESCRIPTION

[0041] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] Example 1

[0044] See also Figure 1-Figure 25The present invention provides a technical solution: a hot melt film forming machine, comprising a support frame 1, and a connecting frame 11 installed on the outer wall of the support frame 1, a driving assembly for driving the lower mold 9 to move is provided on the outer wall of the support frame 1, the driving assembly comprises a connecting shaft 12 installed on the outer wall of the support frame 1, and an auxiliary gear 2 symmetrically distributed along the central axis of the support frame 1, a chain 3 is rotatably connected to the outer wall of the auxiliary gear 2, a fixed block 4 is fixedly connected to the outer wall of the chain 3, a support shaft 5 adapted for the lower mold 9 is provided on the outer wall of the fixed block 4, a connecting shaft 12 is rotatably connected to the outer wall of the support frame 1, a transmission gear 13 adapted for the chain 3 is provided on the outer wall of the connecting shaft 12, and a motor 14 adapted for the connecting shaft 12 is provided on the outer wall of the support frame 1; the lower mold 9 comprises a lower mold 1 901, a lower mold 2 902 and a lower mold 3 903, a glue injection assembly for injecting material into the lower mold 9 is provided on the outer wall of the connecting frame 11, and a cooling assembly for cooling the film is provided on the outer wall of the connecting frame 11.

[0045] When in use, connect the external power supply to start the motor 14 and drive the transmission gear 13 to rotate through the connecting shaft 12. The transmission gear 13 is engaged with the chain 3, thereby driving the chain 3 to move on the surface of the multiple sets of auxiliary gears 2. In this process, the chain 3 pushes the three sets of lower molds 9 to move along the outer wall of the support frame 1 through the fixed block 4 and the support shaft 5. For the specific working process, please refer to Figure 6 : The lower mold 1 901, the lower mold 2 902 and the lower mold 3 903 are respectively in the initial state Figure 6 At points a, b and c in the figure, first, liquid hot melt adhesive is injected into the interior of the lower mold 901 through the glue injection assembly, so that it is evenly filled on the surface of the lower mold 901, and then the motor 14 is started to drive the lower mold 9 to move through the chain 3, so that the lower mold 901 moves to point b, and at this time the lower mold 2 902 will move to point c, and the lower mold 3 903 will move to point a, and then the glue injection assembly will inject liquid hot melt adhesive into the interior of the lower mold 3 903, and the cooling assembly will cool the liquid hot melt adhesive inside the lower mold 901 and solidify it into a sheet, and then the motor 14 will drive the lower mold 9 through the chain 3 again. The mold 9 moves, so that the lower mold 1 901 moves to point C, the lower mold 2 902 moves to point a, and the lower mold 3 903 moves to point b. When the lower mold 1 901 moves to point C, the mold release mechanism pushes the formed hot melt adhesive sheet out of the surface of the lower mold 1 901 to realize automatic unloading. At the same time, the glue injection component injects liquid hot melt adhesive into the interior of the lower mold 2 902, and the cooling component cools the liquid hot melt adhesive inside the lower mold 3 903 and solidifies it into a sheet. Through the alternation of the three groups of lower molds 9, a streamlined processing mode integrating glue injection, cooling and demoulding is realized during the processing of the hot melt adhesive sheet.

[0046] See also Figure 7 、 Figure 8 and Figure 19 The glue injection assembly includes a melt bin 15 mounted on the outer wall of the connecting frame 11 for heating hot melt adhesive particles, and a vacuum pump 22 mounted on the outer wall of the top end of the melt bin 15. A suction pipe 23 adapted to the melt bin 15 is provided on the outer wall of one end of the vacuum pump 22, and a second telescopic tube 26 adapted to the suction pipe 23 is provided on the inner wall of the melt bin 15. A push rod 27 is fixedly connected to the inner wall of the melt bin 15 at the center position of the second telescopic tube 26, and a threaded rod 28 is rotatably connected to the inner wall of the melt bin 15. An extrusion plate 29 is threadedly connected to the outer wall of the threaded rod 28. A through hole 30 adapted to the second telescopic tube 26 is provided on the outer wall of the extrusion plate 29. A connecting column 31 is slidably connected to the inner wall of the extrusion plate 29. A limiting plate 32 adapted to the through hole 30 is provided on the outer wall of one end of the connecting column 31, and a first limiting spring 33 adapted to the connecting column 31 is provided on the inner wall of the extrusion plate 29.

[0047] When in use, the vacuum pump 22 is started to extract air from the interior of the melt bin 15 through the suction pipe 23. At this time, the air below the extrusion plate 29 in the melt bin 15 passes through the through hole 30 into the interior of the second telescopic tube 26, and finally enters the suction pipe 23 and is exhausted. When the air in the space below the extrusion plate 29 in the melt bin 15 is completely exhausted, the air pressure in the space above the extrusion plate 29 is normal. Because the second telescopic tube 26 covers the through hole 30, when the space below the extrusion plate 29 is vacuumed, the air in the space above the extrusion plate 29 will not pass through the through hole 30 into the bottom of the melt bin 15. By rotating the threaded rod 28, the rotational motion between the extrusion plate 29 and the threaded rod 28 is converted into a linear motion of the extrusion plate 29 inside the melt bin 15, thereby pushing the extrusion plate 29 to move downward. During this process, the through hole 30 will move downward along the outer periphery of the ejector rod 27, causing the through hole 30 to slide out of the surface of the ejector rod 27. At this time, the first limit spring 33 is forced to push the connecting column 31 to slide toward the inside of the extrusion plate 29, thereby pushing the limit plate 32 and the through hole 30 to close. After that, the melt bin 15 heats the internal hot melt adhesive particles to melt them, preventing air from entering the hot melt adhesive and forming bubbles when the hot melt adhesive changes from solid to liquid.

[0048] See also Figure 7 、 Figure 8 、 Figure 10 、 Figure 11 、 Figure 18 、 Figure 20 and Figure 21The glue injection assembly also includes a first telescopic tube 16 and an exhaust mechanism installed on the outer wall of the bottom end of the melt bin 15. The outer wall of the bottom end of the first telescopic tube 16 is fixedly connected to the upper mold 17. An electric valve 18 is installed between the first telescopic tube 16 and the upper mold 17. A cylinder 19 is fixedly connected to the inner wall of the connecting frame 11. A connecting block 20 is fixedly connected to the outer wall of the bottom end of the cylinder 19. A slide groove 21 adapted to the connecting block 20 is provided on the outer wall of the upper mold 17. An empty bin 37 is opened on the inner wall of the connecting frame 11. A second limit spring 38 is fixedly connected to the inner wall of the empty bin 37. The outer wall of one end of the second limit spring 38 is provided with a There is a piston plate 39 adapted to the empty chamber 37, and a connecting rod 40 adapted to the connecting block 20 is provided on the outer wall of the piston plate 39, and a pull rope 41 is fixedly connected to the outer wall of the top end of the piston plate 39, and the pull rope 41 includes a spring rope 411 and a nylon rope 412. A rotating sleeve 42 is rotatably connected to the inner wall of the melt chamber 15, and a spring 43 adapted to the rotating sleeve 42 is provided on the inner wall of the melt chamber 15, and a ratchet 44 adapted to the nylon rope 412 is provided on the outer wall of one end of the rotating sleeve 42, a pawl 45 adapted to the ratchet 44 is provided on the outer wall of the threaded rod 28, and a spring sheet 46 adapted to the pawl 45 is provided on the outer wall of the threaded rod 28.

[0049] When in use, the cylinder 19 pushes the connecting block 20 to move downward along the inner wall of the connecting frame 11. At this time, the upper mold 17 is acted upon by the force to move to the surface of the lower mold 9 and stretch the first telescopic tube 16. The connecting block 20 will pull the piston plate 39 through the connecting rod 40 to slide downward inside the empty chamber 37 and stretch the second limit spring 38. When the piston plate 39 slides downward inside the empty chamber 37, it will first pull the spring rope 411, causing the spring rope 411 to deform and change from a spiral state to a straight state. When the upper mold 17 and the lower mold 9 are closed, the spring rope 411 has completely changed from a spiral state to a straight state. Then the electric valve 18 is opened to release the limit on the first telescopic tube 16. Then the cylinder 19 pushes the connecting block 20 downward again, causing the connecting block 20 to slide downward along the surface of the slide groove 21. In this process, the piston plate 39 will pull the nylon rope 412 through the spring rope 411, causing the nylon rope 412 to pull the ratchet 44 and the rotary The rotating sleeve 42 rotates on the inner wall of the melt chamber 15 and applies a torque to the mainspring 43. When the ratchet 44 rotates, the engagement between the ratchet 44 and the pawl 45 pushes the threaded rod 28 to rotate. The rotation of the threaded rod 28 pushes the extrusion plate 29 to descend and squeeze the liquid hot melt adhesive inside the melt chamber 15, thereby squeezing it into the interior of the gel space formed after the upper mold 17 and the lower mold 9 are closed. When the injection is completed, the cylinder 19 pulls the connecting block 20 and the upper mold 17 to reset. At this time, the second limit spring 38 is forced to pull the piston plate 39 to reset, and the spring rope 411 also returns to the spiral state. At the same time, the mainspring 43 is forced to push the rotating sleeve 42 and the ratchet 44 to rotate and rewind the nylon rope 412. In this process, the ratchet 44 will push the pawl 45 to rotate with the threaded rod 28 and squeeze the spring leaf 46. When the ratchet 44 stops rotating, the spring leaf 46 is forced to push the pawl 45 to re-engage with the ratchet 44.

[0050] See also Figure 7 、 Figure 8 and Figure 19 The vacuum mechanism includes an electric three-way valve 24 installed on the outer wall of the suction pipe 23, and a through groove 34 opened on the inner wall of the upper mold 17. A rubber pad 10 is bonded to the top outer wall of the lower mold 9. A vacuum hose 25 adapted to the through groove 34 is provided on the outer wall of one end of the electric three-way valve 24. A guide plate 35 is fixedly connected to the inner wall of the bottom end of the upper mold 17. Multiple groups of V-shaped diverter plates 36 adapted to the through grooves 34 are provided on the outer wall of the guide plate 35.

[0051] During use, when the upper mold 17 and the lower mold 9 are closed to form a gel space, the upper mold 17 and the lower mold 9 will squeeze the rubber pad 10 to ensure the sealing of the gel space. Then the electric three-way valve 24 is opened to allow the vacuum pump 22 to evacuate the interior of the gel space through the vacuum hose 25. The air inside the gel space enters the vacuum hose 25 through the through groove 34 and is discharged. When the glue injection is completed, the vacuum pump 22 is started to inflate the interior of the gel space. When the air is discharged into the gel space from the through groove 34, it will first enter the gap between the guide plate 35 and the upper mold 17, and the air will be diverted by multiple groups of V-shaped diverter plates 36, which can reduce the impact force of the air entering the gel space and prevent the air from blowing directly onto the surface of the hot melt film, thereby causing wrinkles on the surface of the hot melt film that has not been completely solidified. When the air pressure inside the gel space rises to normal, the upper mold 17 and the lower mold 9 can be separated.

[0052] See also Figure 3 、 Figure 4 and Figure 6 The driving assembly also includes a limiting column 6 and a demolding mechanism installed on the outer wall of the fixed block 4. A guide groove 7 adapted to the support shaft 5 is provided on the outer wall of the support frame 1, and a limiting groove 8 adapted to the limiting column 6 is provided on the outer wall of the support frame 1.

[0053] During use, when the motor 14 drives the support shaft 5 to move through the chain 3 and the fixed block 4, one end of the support shaft 5 will slide inside the guide groove 7, so that the force applied by the lower mold 9 to the surface of the chain 3 through the support shaft 5 is mostly transmitted to the surface of the guide groove 7 through the support shaft 5, thereby supporting the lower mold 9. At the same time, when the lower mold 9 moves from point b to point c, the cooperation between the guide groove 7 and the chain 3 will drive the lower mold 9 to flip over, providing favorable conditions for subsequent demolding, and the sliding connection between the limit column 6 and the limit groove 8 can support the lower mold 9 when it flips, so that the lower mold 9 will not rotate when moving, but can only move along the surface of the guide groove 7 and flip.

[0054] See also Figure 2 、 Figure 16 and Figure 17 The demoulding mechanism includes a connecting plate 72 arranged on the inner wall of the lower mold 9, and a top plate 77 installed on the outer wall of the support frame 1. Push rods 73 are evenly distributed on the top outer wall of the connecting plate 72. A pressing spring 74 adapted to the connecting plate 72 is provided on the inner wall of the lower mold 9. A limiting block 75 is fixedly connected to the outer wall of the connecting plate 72. A push plate 76 adapted to the top plate 77 is provided on the outer wall of the bottom end of the connecting plate 72.

[0055] When the locking cam 73 is in the unlock state, the locking cam 73 is in the unlock state, and the locking cam 73 is in the unlock state, so that the locking cam 73 is locked and the locking cam 73 is locked.

[0056] See also Figure 1 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 22 and Figure 23 The cooling assembly includes a liquid storage tank 47 and a recovery mechanism installed on the outer wall of the support frame 1 for storing coolant. A water pump 48 adapted to the liquid storage tank 47 is provided on the outer wall of the support frame 1, and a water outlet pipe 49 is installed on the outer wall of the water pump 48. A water outlet telescopic pipe 50 adapted to the water outlet pipe 49 is provided on the inner wall of the support frame 1. A water outlet joint 51 is installed on the outer wall of one end of the water outlet telescopic pipe 50, and a water outlet spring 52 adapted to the water outlet joint 51 is provided on the inner wall of the support frame 1. A cooling groove 53 is provided on the inner wall of the lower mold 9. The cooling groove 53 includes a liquid inlet 531, a cooling channel 532 and a liquid outlet 533. A drainage telescopic pipe 54 is installed on the inner wall of the support frame 1, and a liquid outlet 53 is provided on the outer wall of one end of the drainage telescopic pipe 54. 3, a water inlet pipe 56 adapted to the liquid storage tank 47 is provided on the outer wall of one end of the drainage telescopic tube 54, a drainage spring 57 adapted to the drainage connector 55 is provided on the inner wall of the support frame 1, a first connecting spring 66 is fixedly connected to the inner wall of the liquid inlet 531, a first blocking plate 67 adapted to the water outlet connector 51 is provided on the outer wall of one end of the first connecting spring 66, the outer edge of the first blocking plate 67 having first notches 68 distributed at equal intervals along the circumferential direction, a second connecting spring 69 is fixedly connected to the inner wall of the liquid outlet 533, a second blocking plate 70 adapted to the drainage connector 55 is provided on the outer wall of one end of the second connecting spring 69, the outer edge of the second blocking plate 70 having second notches 71 distributed at equal intervals along the circumferential direction.

[0057] During use, when the lower mold 9 moves from point a to point b, the lower mold 9 will squeeze the surfaces of the water outlet joint 51 and the drain joint 55. The water outlet joint 51 and the drain joint 55 will slide toward the inside of the support frame 1 under the force and squeeze the water outlet spring 52 and the drain spring 57. When the lower mold 9 moves to point b, the water outlet spring 52 is forced to push the water outlet telescopic tube 50 to extend outward, thereby pushing one end of the water outlet joint 51 into the interior of the liquid inlet 531, so that the water outlet joint 51 pushes the first blocking plate 67 to slide toward the interior of the liquid inlet 531 and squeezes the first connecting spring 66, thereby releasing the restriction on the first notch 68. At the same time, the drain spring 57 is forced to push the drain telescopic tube 54 to extend outward, thereby pushing one end of the drain joint 55 into the interior of the liquid outlet 533, so that the drain joint 55 pushes the second blocking plate 70 to slide toward the interior of the liquid outlet 533 and squeezes the second connecting spring 69, thereby releasing the restriction on the second notch. 71 is limited, at this time, the water pump 48 is started to pump the coolant inside the liquid storage tank 47 into the interior of the water-outlet telescopic pipe 50 through the water outlet pipe 49, and is injected into the interior of the cooling channel 532 from the liquid inlet 531 through the first notch 68 through the water outlet joint 51, and cools the hot melt adhesive sheet. After entering the cooling channel 532, the coolant will pass through the second notch 71 from the liquid outlet 533 into the interior of the drain joint 55, and then enter the water inlet pipe 56 through the drain telescopic pipe 54 and then flow into the interior of the liquid storage tank 47. After cooling is completed, the water pump 48 is turned off and the lower mold 9 moves to point C. At this time, the water outlet joint 51 and the drain joint 55 will slide out of the liquid inlet 531 and the liquid outlet 533. At this time, the first connecting spring 66 is subjected to the force to push the first blocking plate 67 to reset and re-limit the first notch 68. At the same time, the second connecting spring 69 is subjected to the force to push the second blocking plate 70 to reset and re-limit the second notch 71.

[0058] See also Figure 8 、 Figure 23 、 Figure 24 and Figure 25 The recovery mechanism includes an auxiliary water inlet pipe 58 arranged on the outer wall of the water inlet pipe 56, and an exhaust pipe 62 installed on the inner wall of the connecting frame 11 and adapted to the empty chamber 37. An auxiliary drainage telescopic pipe 59 adapted to the auxiliary water inlet pipe 58 is provided on the inner wall of the support frame 1, and an auxiliary drainage joint 60 adapted to the liquid outlet 533 is provided on the outer wall of one end of the auxiliary drainage telescopic pipe 59. An auxiliary drainage spring 61 adapted to the auxiliary drainage joint 60 is provided on the inner wall of the support frame 1. An exhaust telescopic pipe 63 is fixedly connected to the outer wall of one end of the exhaust pipe 62, and an exhaust joint 64 adapted to the liquid inlet 531 is provided on the outer wall of one end of the exhaust telescopic pipe 63. An exhaust spring 65 adapted to the exhaust joint 64 is provided on the inner wall of the connecting frame 11.

[0059] When in use, when the lower mold 9 moves from point c to point a, the lower mold 9 will squeeze out the surfaces of the auxiliary drainage joint 60 and the exhaust joint 64. The auxiliary drainage joint 60 and the exhaust joint 64 will slide inward under the force and squeeze the auxiliary drainage spring 61 and the exhaust spring 65. When the lower mold 9 moves to point a, the auxiliary drainage spring 61 is forced to push the auxiliary drainage telescopic tube 59 to extend outward, thereby pushing one end of the auxiliary drainage joint 60 into the interior of the liquid outlet 533, so that the auxiliary drainage joint 60 pushes the second blocking plate 70 to slide toward the interior of the liquid outlet 533 and squeezes the second connecting spring 69, thereby releasing the limit on the second notch 71. At the same time, the exhaust spring 65 is forced to push the exhaust telescopic tube 63 to extend outward, thereby pushing one end of the exhaust joint 64 into the interior of the liquid inlet 531, so that the exhaust joint 64 pushes the first blocking plate 6 7 slides toward the inside of the liquid inlet 531 and squeezes the first connecting spring 66, thereby releasing the restriction on the first notch 68. During the process of the piston plate 39 sliding downward in the empty chamber 37 to transform the spring rope 411 from a spiral state to a straight state, the piston plate 39 squeezes the air inside the empty chamber 37 into the inside of the exhaust pipe 62 and enters the inside of the liquid inlet 531 through the exhaust joint 64. The air passes through the first notch 68 and enters the inside of the cooling channel 532, squeezing the coolant remaining in the cooling channel 532, thereby discharging the coolant from the liquid outlet 533 through the second notch 71 into the inside of the auxiliary drain joint 60, and then flows into the inside of the liquid storage tank 47 through the auxiliary water inlet pipe 58, thereby preventing the coolant remaining in the cooling channel 532 from causing the hot melt adhesive entering the gel space to solidify too quickly, resulting in unevenness on the surface of the hot melt adhesive sheet.

[0060] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hot melt film forming machine, comprising a support frame (1), and a connecting frame (11) mounted on the outer wall of the support frame (1), characterized in that: A driving assembly for driving the lower mold (9) to move is provided on the outer wall of the support frame (1), and the driving assembly includes a connecting shaft (12) installed on the outer wall of the support frame (1), and auxiliary gears (2) symmetrically distributed along the central axis of the support frame (1), a chain (3) is rotatably connected to the outer wall of the auxiliary gear (2), a fixed block (4) is fixedly connected to the outer wall of the chain (3), and a supporting shaft (5) adapted for the lower mold (9) is provided on the outer wall of the fixed block (4), and the outer wall of the support frame (1) is rotatably connected to the outer wall of the auxiliary gear (2). A connecting shaft (12) is connected, a transmission gear (13) adapted to the chain (3) is provided on the outer wall of the connecting shaft (12), and a motor (14) adapted to the connecting shaft (12) is provided on the outer wall of the support frame (1); the lower mold (9) comprises a lower mold 1 (901), a lower mold 2 (902) and a lower mold 3 (903), a glue injection component for injecting material into the lower mold (9) is provided on the outer wall of the connecting frame (11), and a cooling component for cooling the film is provided on the outer wall of the connecting frame (11); The glue injection assembly includes a melt bin (15) mounted on the outer wall of the connecting frame (11) for heating hot melt glue particles, and a vacuum pump (22) mounted on the outer wall of the top end of the melt bin (15). A suction pipe (23) adapted to the melt bin (15) is provided on the outer wall of one end of the vacuum pump (22). A second telescopic pipe (26) adapted to the suction pipe (23) is provided on the inner wall of the melt bin (15). A top rod (27) is fixedly connected to the center position of the second telescopic pipe (26) on the inner wall of the melt bin (15). A threaded rod (28) is rotatably connected to the inner wall of the bin (15), an extrusion plate (29) is threadedly connected to the outer wall of the threaded rod (28), a through hole (30) adapted for the second telescopic tube (26) is provided on the outer wall of the extrusion plate (29), a connecting column (31) is slidably connected to the inner wall of the extrusion plate (29), a limiting plate (32) adapted for the through hole (30) is provided on the outer wall of one end of the connecting column (31), and a first limiting spring (33) adapted for the connecting column (31) is provided on the inner wall of the extrusion plate (29); The limiting plates (32) are slidably connected to the extrusion plates (29) via the connecting columns (31), and a plurality of limiting plates (32) are provided on the surface of the connecting columns (31); The injection assembly further comprises a first telescopic tube (16) and an air extraction mechanism mounted on the outer wall of the bottom end of the melt bin (15); an upper mold (17) is fixedly connected to the outer wall of the bottom end of the first telescopic tube (16); an electric valve (18) is installed between the first telescopic tube (16) and the upper mold (17); a cylinder (19) is fixedly connected to the inner wall of the connecting frame (11); a connecting block (20) is fixedly connected to the outer wall of the bottom end of the cylinder (19); a sliding groove (21) adapted to the connecting block (20) is provided on the outer wall of the upper mold (17); an empty bin (37) is provided on the inner wall of the connecting frame (11); a second limit spring (38) is fixedly connected to the inner wall of the empty bin (37); and an outer wall of one end of the second limit spring (38) is provided with an empty bin (37). 7) an adapted piston plate (39), a connecting rod (40) adapted to the connecting block (20) is provided on the outer wall of the piston plate (39), a pull rope (41) is fixedly connected to the outer wall of the top end of the piston plate (39), the pull rope (41) comprises a spring rope (411) and a nylon rope (412), a rotating sleeve (42) is rotatably connected to the inner wall of the melt chamber (15), a spring (43) adapted to the rotating sleeve (42) is provided on the inner wall of the melt chamber (15), a ratchet (44) adapted to the nylon rope (412) is provided on the outer wall of one end of the rotating sleeve (42), a pawl (45) adapted to the ratchet (44) is provided on the outer wall of the threaded rod (28), and a spring sheet (46) adapted to the pawl (45) is provided on the outer wall of the threaded rod (28); The vacuum mechanism comprises an electric three-way valve (24) mounted on the outer wall of the suction pipe (23), and a through groove (34) provided on the inner wall of the upper mold (17); a rubber pad (10) is bonded to the outer wall of the top end of the lower mold (9); a vacuum hose (25) adapted to the through groove (34) is provided on the outer wall of one end of the electric three-way valve (24); a guide plate (35) is fixedly connected to the inner wall of the bottom end of the upper mold (17); and a plurality of V-shaped diverter plates (36) adapted to the through grooves (34) are provided on the outer wall of the guide plate (35).

2. A hot melt adhesive sheet forming machine according to claim 1, characterized in that: The driving assembly further comprises a limiting column (6) and a demoulding mechanism mounted on the outer wall of the fixed block (4); a guide groove (7) adapted for the support shaft (5) is provided on the outer wall of the support frame (1); and a limiting groove (8) adapted for the limiting column (6) is provided on the outer wall of the support frame (1).

3. The hot melt adhesive sheet forming machine according to claim 2, characterized in that: The demoulding mechanism includes a connecting plate (72) arranged on the inner wall of the lower mold (9), and a top plate (77) installed on the outer wall of the support frame (1), push rods (73) are evenly spaced on the outer wall of the top end of the connecting plate (72), a pressing spring (74) adapted to the connecting plate (72) is arranged on the inner wall of the lower mold (9), a limiting block (75) is fixedly connected to the outer wall of the connecting plate (72), and a push plate (76) adapted to the top plate (77) is arranged on the outer wall of the bottom end of the connecting plate (72).

4. The hot melt adhesive sheet forming machine according to claim 1, characterized in that: The cooling assembly comprises a liquid storage tank (47) and a recovery mechanism mounted on the outer wall of the support frame (1) for storing coolant, wherein a water pump (48) adapted to the liquid storage tank (47) is provided on the outer wall of the support frame (1), a water outlet pipe (49) is provided on the outer wall of the water pump (48), a water outlet telescopic pipe (50) adapted to the water outlet pipe (49) is provided on the inner wall of the support frame (1), a water outlet joint (51) is provided on the outer wall of one end of the water outlet telescopic pipe (50), a water outlet spring (52) adapted to the water outlet joint (51) is provided on the inner wall of the support frame (1), a cooling groove (53) is provided on the inner wall of the lower mold (9), the cooling groove (53) comprises a liquid inlet (531), a cooling channel (532) and a liquid outlet (533), a drainage telescopic pipe (54) is provided on the inner wall of the support frame (1), and a liquid outlet spring (52) adapted to the water outlet joint (51) is provided on the outer wall of one end of the drainage telescopic pipe (54). A drainage joint (55) adapted to the liquid inlet (533) is provided on the outer wall of one end of the drainage telescopic tube (54), a water inlet pipe (56) adapted to the liquid storage tank (47) is provided on the outer wall of one end of the drainage telescopic tube (54), a drainage spring (57) adapted to the drainage joint (55) is provided on the inner wall of the support frame (1), a first connecting spring (66) is fixedly connected to the inner wall of the liquid inlet (531), a first blocking plate (67) adapted to the water outlet joint (51) is provided on the outer wall of one end of the first connecting spring (66), the outer edge of the first blocking plate (67) has first notches (68) distributed at equal intervals along the circumferential direction, a second connecting spring (69) is fixedly connected to the inner wall of the liquid outlet (533), a second blocking plate (70) adapted to the drainage joint (55) is provided on the outer wall of one end of the second connecting spring (69), the outer edge of the second blocking plate (70) has second notches (71) distributed at equal intervals along the circumferential direction.

5. The hot melt adhesive sheet forming machine according to claim 4, characterized in that: The recovery mechanism comprises an auxiliary water inlet pipe (58) arranged on the outer wall of the water inlet pipe (56), and an exhaust pipe (62) installed on the inner wall of the connecting frame (11) and adapted to the empty chamber (37); an auxiliary drainage telescopic pipe (59) adapted to the auxiliary water inlet pipe (58) is arranged on the inner wall of the supporting frame (1); an auxiliary drainage joint (60) adapted to the liquid outlet (533) is arranged on the outer wall of one end of the auxiliary drainage telescopic pipe (59); an auxiliary drainage spring (61) adapted to the auxiliary drainage joint (60) is arranged on the inner wall of the supporting frame (1); an exhaust telescopic pipe (63) is fixedly connected to the outer wall of one end of the exhaust pipe (62); an exhaust joint (64) adapted to the liquid inlet (531) is arranged on the outer wall of one end of the exhaust telescopic pipe (63); and an exhaust spring (65) adapted to the exhaust joint (64) is arranged on the inner wall of the connecting frame (11).

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