An automatic film sealing device for injection molded workpieces

Abstract

The application discloses a kind of automatic film sealing equipment of injection molding workpiece, it includes organic platform, film hot sealing mechanism, laser film cutting mechanism, edge material clamping mechanism, secondary hot sealing mechanism and blanking mechanism, rotating platform is equipped with multiple clamping mechanisms for clamping workpiece, wherein: rotating platform is used to drive clamping mechanism and workpiece sequentially through film hot sealing mechanism, laser film cutting mechanism, edge material clamping mechanism, secondary hot sealing mechanism and blanking mechanism;Film hot sealing mechanism is used to paste film on the surface of workpiece and hot-press film on workpiece;Laser film cutting mechanism is used to laser cutting along the edge of workpiece to film;Edge material clamping mechanism is used to clamp the film edge material that workpiece edge is cut off;Secondary hot sealing mechanism is used to secondary hot-press workpiece and the film on its surface;Blanking mechanism is used to take out workpiece from clamping mechanism after secondary hot-pressing.The application saves space, and the automation performance is stronger, can realize simultaneously hot-pressing front and back.

Description

TECHNICAL FIELD

[0001] The present application relates to injection molding workpiece post-processing equipment, in particular to an automatic film sealing equipment for injection molding workpieces. BACKGROUND

[0002] In the prior art, some injection molding workpieces need to be sealed on both sides after injection molding. For related mechanisms, please refer to the Chinese patent publication CN216466187U, entitled "Full-automatic high-speed hot laminating machine with uniform hot pressing function and convenient cutting", which is described as follows:

[0003] "By installing the seat, the first hydraulic rod, the limiting rod, the laminating wheel and the heating strip, the limiting rod can limit the delivery of the unwound film. The outer surface of the laminating wheel is in close contact with the outer surface of the rotating wheel. The film passes between the rotating wheel and the laminating wheel. The heating strip is distributed in a circle around the center of the laminating wheel. The laminating wheel can be uniformly heated by the heating strip, which is beneficial to the uniform heating of the film. When the paper passes between the unwinding wheel and the laminating wheel, the heated film can tightly adhere to the surface of the paper, thereby performing laminating processing. At the same time, during the laminating process, the limiting rod can move up and down through the first hydraulic rod and the mounting seat, so that the limiting rod can produce tension on the film, preventing the film from wrinkling during laminating processing".

[0004] Please refer to the description of the drawings in the specification of the above-mentioned patent publication Figure 1 Such mechanisms are only suitable for laminating products with flat surfaces. For workpieces with specified shapes, hot pressing molds, cutting mechanisms, and other devices are needed to sequentially perform front hot pressing and cutting, and then back hot pressing and cutting. This film sealing equipment not only has low efficiency, but also relies on a large number of mechanisms and devices, occupies a large space, and has insufficient automation capability, which cannot meet the requirements of high efficiency and intelligent production. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an automatic film sealing equipment for injection molding workpieces that saves space, has stronger automation performance, and can simultaneously hot press the front and back surfaces, in view of the deficiencies of the prior art.

[0006] To solve the above technical problems, the present application adopts the following technical solutions.

[0007] An automatic film sealing device for injection molding workpieces, comprising a machine table, a rotating table provided on the machine table, a film covering and heat sealing mechanism, a laser film cutting mechanism, an edge material clamping mechanism, a secondary heat sealing mechanism and a discharging mechanism arranged in sequence along the periphery of the rotating table, a plurality of clamping mechanisms for clamping workpieces provided on the rotating table, wherein: the rotating table is used to drive the clamping mechanisms and the workpieces to pass through the film covering and heat sealing mechanism, the laser film cutting mechanism, the edge material clamping mechanism, the secondary heat sealing mechanism and the discharging mechanism in sequence; the film covering and heat sealing mechanism is used to cover the film on the surface of the workpiece and heat press the film on the workpiece; the laser film cutting mechanism is used to cut the film along the edge of the workpiece; the edge material clamping mechanism is used to clamp the film edge material cut off from the workpiece; the secondary heat sealing mechanism is used to heat press the workpiece and the film on the surface of the workpiece again; and the discharging mechanism is used to take out the workpiece after secondary heat pressing from the clamping mechanism.

[0008] Preferably, the film covering and heat sealing mechanism comprises a support plate, an upper and lower film conveying assembly, an upper film heat pressing assembly, a lower film heat pressing assembly, an upper and lower film traction assembly and a film shearing assembly provided on the support plate, wherein: the upper and lower film conveying assembly is used to convey the upper layer film and the lower layer film to the upper and lower sides of the workpiece at the same time; the upper and lower film traction assembly is used to pull the upper layer film and the lower layer film; the upper film heat pressing assembly and the lower film heat pressing assembly are symmetrically arranged, and are used to move synchronously and heat press the upper layer film and the lower layer film on the upper and lower sides of the workpiece, respectively; and the film shearing assembly is arranged adjacent to the discharge end of the upper and lower film conveying assembly, and is used to shear the upper layer film and the lower layer film after heat pressing.

[0009] Preferably, the upper and lower film conveying assembly comprises an upper film roll for providing the upper layer film, a lower film roll for providing the lower layer film, an upper conveying carrier plate and a lower conveying carrier plate, the upper film roll and the lower film roll are rotationally connected with the support plate, the upper conveying carrier plate and the lower conveying carrier plate are symmetrically arranged and are fixedly connected with the support plate, wherein: the bottom of the upper conveying carrier plate is provided with an upper accommodating groove, two upper baffles are fixedly arranged on the bottom of the upper conveying carrier plate, the upper baffles are located below the upper accommodating groove, and the upper layer film output by the upper film roll is conveyed along the gap between the upper accommodating groove and the upper baffles; the top of the lower conveying carrier plate is provided with a lower accommodating groove, two lower baffles are fixedly arranged on the top of the lower conveying carrier plate, the lower baffles are located above the lower accommodating groove, and the lower layer film output by the lower film roll is conveyed along the gap between the lower accommodating groove and the lower baffles; and a film covering gap for the workpiece to pass through is formed between the upper baffles and the lower baffles.

[0010] Preferably, the support plate is provided with an upper buffer roller and a lower buffer roller, the upper buffer roller is arranged adjacent to the inlet end of the upper accommodating groove, the upper layer of film of the upper film roll output enters the upper accommodating groove after passing around the upper buffer roller, the lower buffer roller is arranged adjacent to the inlet end of the lower accommodating groove, the lower layer of film of the lower film roll output enters the lower accommodating groove after passing around the lower buffer roller.

[0011] Preferably, the inlet end of the upper accommodating groove, the inlet end of the lower accommodating groove, the end of the upper baffle, the side of the upper baffle, the end of the lower baffle and the side of the lower baffle are all provided with chamfered portions.

[0012] Preferably, the discharge end of the upper conveying carrier plate is provided with an upper avoiding opening, the discharge end of the lower conveying carrier plate is provided with a lower avoiding opening, the upper avoiding opening and the lower avoiding opening are arranged in vertical alignment, and the upper and lower film traction assembly is used to pull the upper layer of film and the lower layer of film from the upper avoiding opening and the lower avoiding opening.

[0013] Preferably, the upper and lower film traction assembly comprises an L-shaped clamping jaw for clamping the upper layer of film and the lower layer of film, and a traction transverse driving mechanism for driving the L-shaped clamping jaw to move close to or away from the upper conveying carrier plate and the lower conveying carrier plate, the traction transverse driving mechanism is fixed on the support plate.

[0014] Preferably, the upper and lower film traction assembly comprises an L-shaped clamping jaw for clamping the upper layer of film and the lower layer of film, and a traction transverse driving mechanism for driving the L-shaped clamping jaw to move close to or away from the upper conveying carrier plate and the lower conveying carrier plate, the traction transverse driving mechanism is fixed on the support plate.

[0015] Preferably, the film shearing assembly comprises a film shearing advance and retreat air cylinder fixedly connected with the support plate, the movement end of the film shearing advance and retreat air cylinder is provided with a shearing driving air cylinder, and the movement end of the shearing driving air cylinder is provided with a shearing cutter.

[0016] Preferably, the laser film cutting mechanism comprises a laser cutting head, the clamping mechanism comprises a clamping support, the clamping support is provided with an axle seat, the axle seat can slide relative to the clamping support along the radial direction of the rotating table, a tension spring is arranged between the clamping support and the axle seat for driving the axle seat to move towards the center of the rotating table, a load shaft is arranged in the axle seat and the two are rotationally connected, the first end of the load shaft is used for clamping the workpiece, a center support is fixed on the machine table, a center opening is arranged at the center of the rotating table, the center support passes through the center opening and extends upwards, and a reversing driving assembly is fixed on the center support for pushing the load shaft and the axle seat outward and driving the load shaft to rotate 180°.

[0017] In the disclosed automatic film sealing equipment for injection molded workpieces, the multiple clamping mechanisms on the rotating table are used for clamping workpieces respectively, when the rotating table operates, the workpieces are sequentially guided through the film covering and heat sealing mechanism, the laser film cutting mechanism, the edge material clamping mechanism, the secondary heat sealing mechanism and the unloading mechanism, and the film covering and heat sealing mechanism is used for pasting the film on the upper and lower surfaces of the workpiece and heat pressing the film on the workpiece, then the laser film cutting mechanism cuts the film along the edge of the workpiece, the edge material clamping mechanism clamps the film edge material cut off from the edge of the workpiece, then the secondary heat sealing mechanism is used for secondary heat pressing and shaping the workpiece and the film on the surface of the workpiece, and finally the unloading mechanism takes out the workpiece after secondary heat pressing from the clamping mechanism. Compared with the prior art, the heat pressing, cutting, shaping and taking and placing mechanisms in the present application are arranged around the rotating table, not only saving space, but also having more automation performance under the carrying of the rotating table, and being capable of realizing simultaneous heat pressing and film sealing of the front and back surfaces, greatly improving the work efficiency and better meeting the application requirements. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a top view of the automatic film sealing equipment for injection molded workpieces of the present application;

[0019] Figure 2 It is a perspective view of the automatic film sealing equipment for injection molded workpieces of the present application Figure 1 ;

[0020] Figure 3 It is a perspective view of the automatic film sealing equipment for injection molded workpieces of the present application Figure 2 ;

[0021] Figure 4 It is a structural view of the film covering and heat sealing mechanism;

[0022] Figure 5 It is a perspective view of the film covering and heat sealing mechanism;

[0023] Figure 6It is a three-dimensional diagram of the upper and lower film conveying components;

[0024] Figure 7 This is an exploded view of the upper and lower membrane transport components;

[0025] Figure 8 This is the structural diagram of the shear film assembly;

[0026] Figure 9 The structure of the laser film cutting mechanism Figure 1 ;

[0027] Figure 10 The structure of the laser film cutting mechanism Figure 2 ;

[0028] Figure 11 It is the structural diagram of the secondary heat sealing mechanism and the blanking mechanism. DETAILED DESCRIPTION

[0029] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0030] The present invention discloses an automatic film sealing device for injection molding workpieces, which is combined with Figures 1 to 11 As shown, it includes an organic platform 1, on which a rotating platform 2 is provided, and a film coating and heat sealing mechanism 3, a laser film cutting mechanism 4, an edge material clamping mechanism 5, a secondary heat sealing mechanism 6 and a material unloading mechanism 7 are sequentially distributed around the rotating platform 2. The rotating platform 2 is provided with a plurality of clamping mechanisms 20 for clamping the workpiece 100, wherein:

[0031] The rotating platform 2 is used to drive the clamping mechanism 20 and the workpiece 100 to sequentially pass through the laminating and heat-sealing mechanism 3, the laser film cutting mechanism 4, the edge material clamping mechanism 5, the secondary heat-sealing mechanism 6 and the unloading mechanism 7;

[0032] The film laminating and heat sealing mechanism 3 is used to adhere the film to the surface of the workpiece 100 and heat-press the film onto the workpiece 100;

[0033] The laser film cutting mechanism 4 is used to perform laser cutting on the film along the edge of the workpiece 100;

[0034] The edge material clamping mechanism 5 is used to clamp the film edge material cut off from the edge of the workpiece 100;

[0035] The secondary heat sealing mechanism 6 is used to perform secondary heat pressing on the workpiece 100 and the film on its surface;

[0036] The unloading mechanism 7 is used to remove the workpiece 100 that has undergone secondary hot pressing from the clamping mechanism 20 .

[0037] The multiple clamping mechanisms 20 on the rotating table 2 are used to clamp workpieces 100 respectively, when the rotating table 2 operates, the workpieces 100 are sequentially sent through the film hot sealing mechanism 3, the laser film cutting mechanism 4, the edge material clamping mechanism 5, the secondary hot sealing mechanism 6 and the discharging mechanism 7, and the film hot sealing mechanism 3 is used to paste the film on the upper and lower surfaces of the workpieces 100, and then the film is hot pressed on the workpieces 100, then the laser film cutting mechanism 4 is used to cut the film along the edges of the workpieces 100, then the edge material clamping mechanism 5 is used to clamp the film edge material cut off from the edges of the workpieces 100, then the secondary hot sealing mechanism 6 is used to hot press and shape the workpieces 100 and the film on the surfaces of the workpieces 100, and finally the discharging mechanism 7 is used to take out the workpieces 100 after the secondary hot pressing from the clamping mechanisms 20. Compared with the prior art, the hot pressing, cutting, shaping and taking and placing mechanisms in the application are arranged around the rotating table 2, which not only saves space, but also has better automation performance under the carrying of the rotating table 2, and can realize the simultaneous hot pressing and film sealing of the front and back surfaces, greatly improves the work efficiency, and better meets the application requirements.

[0038] In the embodiment, please refer to Figure 4 and Figure 5 The film hot sealing mechanism 3 comprises a supporting plate 35, the supporting plate 35 is provided with an upper and lower film conveying assembly 30, an upper film hot pressing assembly 31, a lower film hot pressing assembly 32, an upper and lower film traction assembly 33 and a film cutting assembly 34, wherein:

[0039] The upper and lower film conveying assembly 30 is used to convey the upper layer film and the lower layer film to the upper and lower sides of the workpieces 100 simultaneously;

[0040] The upper and lower film traction assembly 33 is used to pull the upper layer film and the lower layer film;

[0041] The upper film hot pressing assembly 31 and the lower film hot pressing assembly 32 are symmetrically arranged above and below, and are used to synchronously move relatively and hot press the upper layer film and the lower layer film on the upper and lower sides of the workpieces 100 respectively;

[0042] The film cutting assembly 34 is arranged adjacent to the discharge end of the upper and lower film conveying assembly 30, and is used to cut the upper layer film and the lower layer film after hot pressing.

[0043] The specific structure of the upper and lower film conveying assembly 30 is shown in Figure 6 and Figure 7The upper and lower film conveying components 30 include an upper film roll 300 for providing the upper film, a lower film roll 301 for providing the lower film, an upper conveying carrier 302, and a lower conveying carrier 303. The upper film roll 300 and the lower film roll 301 are both rotatably connected to the support plate 35. The upper conveying carrier 302 and the lower conveying carrier 303 are symmetrically arranged up and down and both are fixedly connected to the support plate 35, wherein:

[0044] An upper receiving groove 304 is formed at the bottom of the upper conveying carrier 302. Two upper baffles 305 are fixed to the bottom of the upper conveying carrier 302. The upper baffles 305 are located below the upper receiving groove 304. The upper film output by the upper film roll 300 is transported along the gap between the upper receiving groove 304 and the upper baffles 305.

[0045] A lower receiving groove 306 is formed on the top of the lower conveying carrier 303. Two lower baffles 307 are fixed on the top of the lower conveying carrier 303. The lower baffles 307 are located above the lower receiving groove 306. The lower film output by the lower film roll 301 is conveyed along the gap between the lower receiving groove 306 and the lower baffles 307.

[0046] A laminating gap 308 is formed between the upper blocking piece 305 and the lower blocking piece 307 , through which the workpiece 100 can pass.

[0047] In the above structure, the upper film is conveyed between the upper baffle 305 and the upper receiving groove 304, and correspondingly, the lower film is conveyed between the lower baffle 307 and the lower receiving groove 306. Based on the above structure, the upper film and the lower film are parallel and symmetrical up and down. On this basis, a coating gap 308 is provided between the upper baffle 305 and the lower baffle 307. When the rotating stage 2 drives the workpiece 100 to operate through the clamping mechanism 20, the workpiece 100 is Figure 4 As shown, it is inserted into the coating gap 308, thereby being placed between the upper film and the lower film. When the rotating platform 2 continues to move between the upper film hot pressing component 31 and the lower film hot pressing component 32, the upper and lower film traction components 33 are used to synchronously pull the upper film and the lower film, so that the upper and lower surfaces of the workpiece 100 between the upper film hot pressing component 31 and the lower film hot pressing component 32 are covered with film, and then the upper and lower films are hot pressed to the upper and lower surfaces of the workpiece 100 by the synchronous hot pressing action of the upper film hot pressing component 31 and the lower film hot pressing component 32, thereby realizing the function of hot pressing and sealing the film on the front and back sides at the same time, thereby improving work efficiency.

[0048] In addition, the upper film roll 300 and the lower film roll 301 can synchronously convey the film to the upper and lower parallel and symmetrical state based on the cooperation of the upper conveying carrier plate 302 and the upper baffle 305 and the lower conveying carrier plate 303 and the lower baffle 307, thereby achieving the function of automatically covering the upper and lower surfaces of the workpiece 100.

[0049] In order to ensure that the upper layer film and the lower layer film enter the upper containing groove 304 and the lower containing groove 306 smoothly, in the embodiment, the support plate 35 is provided with an upper buffer roller 350 and a lower buffer roller 351. The upper buffer roller 350 is arranged adjacent to the inlet end of the upper containing groove 304. The upper layer film output by the upper film roll 300 enters the upper containing groove 304 after passing around the upper buffer roller 350. The lower buffer roller 351 is arranged adjacent to the inlet end of the lower containing groove 306. The lower layer film output by the lower film roll 301 enters the lower containing groove 306 after passing around the lower buffer roller 351.

[0050] As a preferred mode, please refer to Figure 7 The inlet end of the upper containing groove 304, the inlet end of the lower containing groove 306, the end of the upper baffle 305, the side of the upper baffle 305, the end of the lower baffle 307, and the side of the lower baffle 307 are all provided with a chamfered portion 309.

[0051] In the above structure, the chamfered portion 309 helps the upper layer film and the lower layer film to slide into the upper containing groove 304 and the lower containing groove 306, and helps the workpiece 100 to enter between the upper baffle 305 and the lower baffle 307, thereby avoiding scratching the upper and lower layer films and preventing impact with the workpiece 100.

[0052] Please refer to Figure 6 In order to facilitate pulling the upper and lower layer films, in the embodiment, the discharge end of the upper conveying carrier plate 302 is provided with an upper avoiding opening 3020, and the discharge end of the lower conveying carrier plate 303 is provided with a lower avoiding opening 3030. The upper avoiding opening 3020 and the lower avoiding opening 3030 are arranged in alignment in the upper and lower directions. The upper and lower film pulling assembly 33 is used to pull the upper layer film and the lower layer film from the upper avoiding opening 3020 and the lower avoiding opening 3030.

[0053] Please refer to Figure 5 and Figure 8 In the embodiment, the upper and lower film pulling assembly 33 includes:

[0054] An L-shaped clamping jaw 330 for clamping the upper layer film and the lower layer film;

[0055] And, a traction transverse drive mechanism 331 for driving the L-shaped clamping jaw 330 to approach or move away from the upper conveying carrier plate 302 and the lower conveying carrier plate 303, the traction transverse drive mechanism 331 being fixed on the support plate 35.

[0056] In the above structure, when the traction transverse drive mechanism 331 drives the L-shaped clamping jaw 330 to clamp the upper and lower films, the L-shaped clamping jaw 330 enters the upper and lower avoiding openings 3020 and 3030, and after clamping the upper and lower films, the L-shaped clamping jaw 330 is retracted synchronously with the rotating action of the rotating carrier 2 until the upper and lower films are synchronously pulled to between the upper film hot pressing assembly 31 and the lower film hot pressing assembly 32. The upper and lower film traction assembly 33 has a compact structure and can realize synchronous pulling of the upper and lower films.

[0057] Please refer to Figure 5 In order to realize synchronous hot pressing, in the embodiment, the upper film hot pressing assembly 31 and the lower film hot pressing assembly 32 are located between the film cutting assembly 34 and the upper and lower film traction assembly 33. The upper film hot pressing assembly 31 comprises an upper hot pressing head 310 and an upper film hot pressing drive mechanism 311 for driving the upper hot pressing head 310 to move up and down. The lower film hot pressing assembly 32 comprises a lower hot pressing head 320 and a lower film hot pressing drive mechanism 321 for driving the lower hot pressing head 320 to move up and down. The hot pressing surface of the upper hot pressing head 310 matches one side of the workpiece 100, and the hot pressing surface of the lower hot pressing head 320 matches the other side of the workpiece 100.

[0058] Please refer to Figure 8 In order to automatically cut the film, in the embodiment, the film cutting assembly 34 comprises a film cutting advance and retreat air cylinder 340 fixedly connected with the support plate 35. The movement end of the film cutting advance and retreat air cylinder 340 is provided with a shearing drive air cylinder 341, and the movement end of the shearing drive air cylinder 341 is provided with a shearing cutter 342. In specific work, after the upper film hot pressing assembly 31 and the lower film hot pressing assembly 32 perform the hot pressing and film sealing action, the film cutting advance and retreat air cylinder 340 drives the shearing drive air cylinder 341 to advance, the shearing drive air cylinder 341 drives the shearing cutter 342 to cut the upper and lower films, and the next workpiece is waited.

[0059] Please refer to Figure 9 and Figure 10In the embodiment, the laser film cutting mechanism 4 comprises a laser cutting head 40, and the clamping mechanism 20 comprises a clamping support 200, wherein the clamping support 200 is provided with an axle seat 201 which is capable of sliding relative to the clamping support 200 along the radial direction of the rotating table 2, and a tension spring 202 is arranged between the clamping support 200 and the axle seat 201 for driving the axle seat 201 to move towards the center of the rotating table 2, a load shaft 203 is arranged in the axle seat 201 and connected with the axle seat 201 in rotation, the first end of the load shaft 203 is used for clamping the workpiece 100, a center support 21 is fixed on the machine table 1, the center of the rotating table 2 is provided with a center opening 22, the center support 21 passes through the center opening 22 and extends upwards, and a reversing driving assembly 23 is fixed on the center support 21 and used for pushing the load shaft 203 and the axle seat 201 outward and driving the load shaft 203 to rotate by 180°.

[0060] Further, the reversing driving assembly 23 comprises a reversing advance-retract cylinder 230 which is fixedly connected with the center support 21, the moving end of the reversing advance-retract cylinder 230 is provided with a reversing driving motor 231, the output shaft of the reversing driving motor 231 is provided with a rotary driving seat 232, the end of the load shaft 203 is provided with a steering seat 204, the rotary driving seat 232 and the steering seat 204 are arranged in axial alignment, the end of the rotary driving seat 232 is provided with a one-character pin head 233, and the end surface of the steering seat 204 is provided with a one-character clamping groove 205, when the reversing advance-retract cylinder 230 drives the reversing driving motor 231 to move forward, the one-character pin head 233 is clamped into the one-character clamping groove 205, and the steering seat 204 and the load shaft 203 are driven by the reversing driving motor 231 to rotate by 180°.

[0061] In the above structure, when the rotating table 2 drives the clamping mechanism 20 and the workpiece 100 to move below the laser cutting head 40, the laser cutting head 40 first cuts the upper film on the upper surface of the workpiece 100, after the upper cutting is completed, the reversing advance-retract cylinder 230 drives the reversing driving motor 231 to move forward until the rotary driving seat 232 abuts against the steering seat 204 and the one-character pin head 233 is clamped into the one-character clamping groove 205, then the reversing driving motor 231 drives the steering seat 204 and the load shaft 203 to rotate by 180°, so that the workpiece 100 is turned over, and the laser cutting head 40 cuts the lower film, thereby realizing the function of automatically cutting the film on both sides under the same laser cutting head 40.

[0062] As a preferred mode, the center support 21 is fixed with a platform driving motor 24 for driving the rotating platform 2 to rotate. The platform driving motor 24 drives the rotating platform 2 to rotate by a preset angle each time, thereby driving the clamping mechanism 20 to transmit along the film covering heat sealing mechanism 3, the laser film cutting mechanism 4, the edge material clamping mechanism 5, the secondary heat sealing mechanism 6 and the discharging mechanism 7 step by step.

[0063] Please refer to Figure 2 In the embodiment, the edge material clamping mechanism 5 includes a pneumatic clamping jaw 50 for clamping the cut film edge material and an edge material clamping advance and retreat motion cylinder 51 for driving the pneumatic clamping jaw 50 to advance and retreat. The edge material clamping mechanism 5 is used for clamping the cut film waste material.

[0064] Please refer to Figure 11 In the embodiment, the structure of the secondary heat sealing mechanism 6 is the same as that of the upper film heat pressing assembly 31 and the lower film heat pressing assembly 32. The main function of the secondary heat sealing mechanism 6 is to perform secondary heat pressing and shaping on the film after heat sealing on the surface of the workpiece 100, so that the film covering effect is better.

[0065] Please refer to Figure 11 Regarding the discharging mechanism, in the embodiment, an air nozzle is preferably used to suck the workpiece. Specifically, the machine table 1 is fixed with a receiving hopper 10, the discharging mechanism 7 includes a lifting and transverse motion assembly 70, the motion end of the lifting and transverse motion assembly 70 is provided with a discharging support arm 71, the discharging support arm 71 is provided with a plurality of negative pressure air nozzles 72 for sucking the workpiece 100 from the clamping mechanism 20, and the lifting and transverse motion assembly 70 is used to drive the discharging support arm 71 to move between the clamping mechanism 20 and the receiving hopper 10. Specifically, the lifting and transverse motion assembly 70 includes a lifting motion cylinder and a transverse motion linear module at the lifting motion end of the lifting motion cylinder.

[0066] The above description is only the preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement or improvement within the technical scope of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic film sealing device for injection molded workpieces, characterized in that: The machine comprises a machine platform (1), a rotating platform (2) provided on the machine platform (1), and a film coating and heat sealing mechanism (3), a laser film cutting mechanism (4), an edge material clamping mechanism (5), a secondary heat sealing mechanism (6) and a material unloading mechanism (7) sequentially distributed around the rotating platform (2), and a plurality of clamping mechanisms (20) for clamping workpieces (100) provided on the rotating platform (2), wherein: The rotating platform (2) is used to drive the clamping mechanism (20) and the workpiece (100) to sequentially pass through the film coating and heat sealing mechanism (3), the laser film cutting mechanism (4), the edge material clamping mechanism (5), the secondary heat sealing mechanism (6) and the unloading mechanism (7); The film laminating and heat-sealing mechanism (3) is used to adhere the film to the surface of the workpiece (100) and to heat-press the film onto the workpiece (100); The laser film cutting mechanism (4) is used to laser cut the film along the edge of the workpiece (100); The edge material clamping mechanism (5) is used to clamp the film edge material that has been cut off from the edge of the workpiece (100); The secondary heat sealing mechanism (6) is used to perform secondary heat pressing on the workpiece (100) and the film on its surface; The unloading mechanism (7) is used to remove the workpiece (100) that has undergone secondary hot pressing from the clamping mechanism (20); The laser film cutting mechanism (4) includes a laser cutting head (40), and the clamping mechanism (20) includes a clamping support (200). The clamping support (200) is provided with an axle seat (201), and the axle seat (201) can slide relative to the clamping support (200) along the radial direction of the rotating platform (2). A tension spring (202) is provided between the clamping support (200) and the axle seat (201) for driving the axle seat (201) to move toward the center of the rotating platform (2). The axle seat (201) is provided with a spring (202) The loading shaft (203) and the two are rotatably connected, the head end of the loading shaft (203) is used to clamp the workpiece (100), a central support (21) is fixed on the machine (1), a central opening (22) is provided at the center of the rotating platform (2), the central support (21) passes through the central opening (22) and extends upward, and a reversing drive component (23) is fixed on the central support (21) for pushing the loading shaft (203) and the shaft seat (201) outward and driving the loading shaft (203) to rotate 180 degrees; When the rotating platform (2) drives the workpiece (100) to operate through the clamping mechanism (20), the workpiece (100) is placed between the upper film and the lower film. When the rotating platform (2) continues to move, the laminating and heat-sealing mechanism (3) heat-presses the upper film and the lower film onto the upper and lower surfaces of the workpiece (100), thereby achieving simultaneous heat-pressing and sealing of the front and back surfaces. When the rotating platform (2) drives the clamping mechanism (20) and the workpiece (100) to move to the bottom of the laser cutting head (40), the laser cutting head (40) first cuts the upper film on the upper surface of the workpiece (100). After the upper layer cutting is completed, the reversing drive component (23) drives the workpiece (100) to change the surface, and the laser cutting head (40) cuts the lower film, thereby achieving double-sided film cutting.

2. The automatic film sealing device for injection molded workpieces according to claim 1, characterized in that: The film laminating and heat-sealing mechanism (3) comprises a support plate (35), on which are provided upper and lower film conveying assemblies (30), an upper film hot pressing assembly (31), a lower film hot pressing assembly (32), upper and lower film pulling assemblies (33), and a film cutting assembly (34), wherein: The upper and lower film conveying components (30) are used to simultaneously convey the upper film and the lower film to the upper and lower sides of the workpiece (100); The upper and lower film pulling components (33) are used to pull the upper film and the lower film; The upper film hot pressing assembly (31) and the lower film hot pressing assembly (32) are symmetrically arranged in an upper and lower direction, and the upper film hot pressing assembly (31) and the lower film hot pressing assembly (32) are used for synchronous relative movement and hot pressing the upper film and the lower film on the upper and lower sides of the workpiece (100) respectively; The film cutting assembly (34) is arranged adjacent to the discharge end of the upper and lower film conveying assemblies (30), and the film cutting assembly (34) is used to cut the upper film and the lower film after heat pressing.

3. The automatic film sealing device for injection molded workpieces according to claim 2, characterized in that: The upper and lower film conveying components (30) include an upper film roll (300) for providing the upper film, a lower film roll (301) for providing the lower film, an upper conveying carrier (302) and a lower conveying carrier (303), the upper film roll (300) and the lower film roll (301) are both rotatably connected to the support plate (35), the upper conveying carrier (302) and the lower conveying carrier (303) are symmetrically arranged in the upper and lower parts and are both fixedly connected to the support plate (35), wherein: An upper receiving groove (304) is provided at the bottom of the upper conveying carrier (302), and two upper baffles (305) are fixed to the bottom of the upper conveying carrier (302), and the upper baffles (305) are located below the upper receiving groove (304). The upper film output by the upper film roll (300) is transported along the gap between the upper receiving groove (304) and the upper baffles (305); A lower receiving groove (306) is provided on the top of the lower conveying carrier (303), and two lower baffles (307) are fixed on the top of the lower conveying carrier (303), and the lower baffles (307) are located above the lower receiving groove (306). The lower film output by the lower film roll (301) is transported along the gap between the lower receiving groove (306) and the lower baffles (307); A coating gap (308) is formed between the upper baffle (305) and the lower baffle (307) for the workpiece (100) to pass through.

4. The automatic film sealing device for injection molded workpieces according to claim 3, characterized in that: An upper buffer roller (350) and a lower buffer roller (351) are provided on the support plate (35); the upper buffer roller (350) is arranged adjacent to the inlet end of the upper receiving groove (304); the upper film outputted from the upper film material roll (300) bypasses the upper buffer roller (350) and enters the upper receiving groove (304); the lower buffer roller (351) is arranged adjacent to the inlet end of the lower receiving groove (306); the lower film outputted from the lower film material roll (301) bypasses the lower buffer roller (351) and enters the lower receiving groove (306).

5. The automatic film sealing device for injection molded workpieces according to claim 3, characterized in that: The inlet end of the upper accommodating groove (304), the inlet end of the lower accommodating groove (306), the end of the upper baffle (305), the side of the upper baffle (305), the end of the lower baffle (307), and the side of the lower baffle (307) are all provided with chamfered portions (309).

6. The automatic film sealing device for injection molded workpieces according to claim 3, characterized in that: The discharge end of the upper conveying carrier (302) is provided with an upper avoidance opening (3020), and the discharge end of the lower conveying carrier (303) is provided with a lower avoidance opening (3030). The upper avoidance opening (3020) and the lower avoidance opening (3030) are aligned with each other up and down, and the upper and lower film pulling components (33) are used to pull the upper film and the lower film from the upper avoidance opening (3020) and the lower avoidance opening (3030).

7. The automatic film sealing device for injection molded workpieces according to claim 6, characterized in that: The upper and lower film pulling components (33) include: L-shaped clamping jaws (330) for clamping the upper film and the lower film; and a traction and transverse driving mechanism (331) for driving the L-shaped clamping claw (330) to move closer to or away from the upper conveying carrier (302) and the lower conveying carrier (303), wherein the traction and transverse driving mechanism (331) is fixed on the support plate (35).

8. The automatic film sealing device for injection molded workpieces according to claim 2, characterized in that: The upper film hot pressing assembly (31) and the lower film hot pressing assembly (32) are located between the film shearing assembly (34) and the upper and lower film traction assemblies (33). The upper film hot pressing assembly (31) includes an upper hot pressing head (310) and an upper film hot pressing driving mechanism (311) for driving the upper hot pressing head (310) to move up and down. The lower film hot pressing assembly (32) includes a lower hot pressing head (320) and a lower film hot pressing driving mechanism (321) for driving the lower hot pressing head (320) to move up and down.

9. The automatic film sealing device for injection molded workpieces according to claim 2, characterized in that: The film cutting assembly (34) comprises a film cutting advance and retreat cylinder (340) fixedly connected to the support plate (35), a shearing drive cylinder (341) is provided at the moving end of the film cutting advance and retreat cylinder (340), and a pair of scissors (342) is provided at the moving end of the shearing drive cylinder (341).

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