Plastic plate processing equipment

Abstract

The invention belongs to the field of plastic plate processing, and particularly relates to plastic plate processing equipment which comprises a rack and a plate conveying belt arranged in the rack, the plate conveying belt is started to open the bottom of a mold, a plastic plate is pushed out of the mold in cooperation with automatic pushing of a pushing assembly, the mold directly falls on the plate conveying belt, and the plate conveying belt is arranged on the rack. The plastic plates are continuously conveyed to the position of the next working procedure through the plate conveying belt, the plastic plates can be cooled in the process that the plastic plates are conveyed to the next working procedure through the plate conveying belt, the formed plastic plates do not need to be directly taken out of equipment by workers, and the plastic plates can be directly moved to the next working procedure. According to the demolding device, the situation that a worker is scalded by the temperature of the plastic plate due to direct contact with the plastic plate which is just demolded is prevented, the possibility that the plastic plate collides with other objects is reduced due to direct transfer of the plastic plate, and the problem that the plastic plate deforms due to the external pressure action is prevented.

Description

Technical Field

[0001] The invention belongs to the field of plastic plate processing, in particular to a plastic plate processing device. Background Art

[0002] Plastic sheets are sheets made of plastic as raw materials. Plastic sheets are divided into continuous molding and single molding according to different production processes and needs. In continuous molding, the plastic raw materials pass through a special extruder or calender and the continuous action of the mold to form a continuous sheet. In single molding, the plastic raw materials are heated to a molten state and injected into a separate mold to form a plastic sheet. This type of plastic sheet processing equipment is single molding plastic sheet processing equipment.

[0003] The prior art also proposes some solutions. For example, a patent application with publication number CN213353491U discloses a multifunctional twin-screw extruder for processing large plastic sheets, including a frame, a feeding component and a twin-screw extruder component. The application improves product quality by adjusting the extrusion temperature of the raw materials.

[0004] After the plastic sheet processing equipment pushes the formed plastic sheet out of the mold, the plastic sheet itself is at a high temperature and is softer than when it is completely cooled. During transportation, if it is subjected to external pressure, it will cause the sheet to deform. If you wait for the plastic sheet to cool before sending it to the next process, it will not only waste a lot of time, but also, if the uncooled plastic sheets are stacked, they will cause mutual squeezing. If they are not stacked, they will take up a lot of space.

[0005] To this end, the present invention provides a plastic sheet processing device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a plastic sheet processing equipment described in the present invention comprises a frame, a sheet conveyor belt arranged in the frame, a driving motor installed on one side of the sheet conveyor belt, the driving motor is installed on the side wall of the frame, and a plastic sheet forming assembly arranged on the top of the frame, a screw extruder is arranged on one side of the frame, the screw extruder is used for melting and injecting plastic raw materials, a pushing assembly is arranged on the top of the plastic sheet forming assembly, the pushing assembly is used for pushing out the plastic sheet in the plastic sheet forming assembly, a pushing assembly is arranged on one side of the pushing assembly, the pushing assembly is used for driving the pushing assembly, a driving assembly is arranged on the output end of the driving motor, the driving assembly is used for opening and closing the plastic sheet forming assembly, and a knocking assembly is arranged on one side of the plastic sheet forming assembly;

[0008] The plastic sheet forming assembly includes a bracket fixed on the top of a frame, a plastic sheet forming mold installed in the bracket, a mold base plate arranged at the bottom of the plastic sheet forming mold, a rotating block fixed at the middle position of one side of the mold base plate, a rotating pin fixed at the top and bottom of the rotating block, and the rotating block is rotatably arranged at the bottom of the plastic sheet forming mold through the rotating pin.

[0009] Preferably, the driving assembly includes a driving gear fixed to the output end of the driving motor, the top of the driving gear is meshed with a driven gear, a rotating column is fixed at the middle position of one side of the driven gear, one end of the rotating column extends to the bracket where a first bevel gear is fixed, the top of the first bevel gear is meshed with a second bevel gear, a half-toothed gear 1 is fixed to the top of the second bevel gear, a gear rack is provided on the outside of the half-toothed gear 1, one side of the gear rack is meshed with a push-turn gear, a half-toothed gear 2 is fixed to the bottom of the push-turn gear, one side of the half-toothed gear 2 is meshed with a rotating gear, and the rotating gear is fixed to the rotating pin at the top of the rotating block.

[0010] Preferably, the size of the driven gear is twice that of the driving gear, and one rotation of the driving gear drives the meshing driven gear to rotate half a rotation.

[0011] Preferably, teeth are arranged on both sides of the interior of the gear rack, and the gear rack is meshed with the half-tooth gear.

[0012] Preferably, the pushing assembly includes a casing installed on both sides of the top of the bracket, a piston block is arranged inside the casing, a pushing pin is fixed at the middle position of the bottom of the piston block, the pushing pin extends from the bracket to the plastic sheet forming mold, a return spring is wrapped around the outside of the pushing pin, the top of the return spring is fixedly connected to the piston block, and the bottom of the return spring is fixedly connected to the bottom end inside the casing.

[0013] Preferably, the pushing assembly includes a first connecting pipe installed on the top of the casing, a three-way valve is installed between the two first connecting pipes, a second connecting pipe is installed at one end of the three-way valve, one end of the second connecting pipe is connected to a pushing shell, and the pushing shell is installed on the bracket.

[0014] Preferably, the pushing assembly also includes a pushing piston arranged inside the pushing shell, a pressure block is fixed to the back of the pushing piston, the pressure block protrudes from the end of the pushing shell, a pushing block is arranged at one end of the pressure block, a connecting column is fixed to one end of the top of the gear rack, the connecting column is placed in a guide groove, the guide groove is opened at the top of the bracket, a connecting frame is fixed to the top of the connecting column, the connecting frame is placed on the top of the bracket, and the connecting frame is fixedly connected to the pushing block.

[0015] Preferably, the length of the guide groove is twice the distance between the push block and the pressure block, and the positions of the push block and the pressure block correspond exactly.

[0016] Preferably, the size of the connecting post matches the size of the guiding groove, and the connecting post can slide inside the guiding groove.

[0017] Preferably, the knocking assembly includes three support plates fixed on one side of the plastic sheet forming mold, the support plate is located above the rotating gear, a rotating wheel is rotatably arranged at the bottom of the support plate, a storage groove is provided on the outer wall of the rotating wheel, a ratchet is rotatably arranged inside the storage groove, a spring sheet is fixed inside the storage groove, one end of the spring sheet abuts against the side wall of the ratchet, a side frame is provided on one side of the rotating wheel, the side frame is fixed on the plastic sheet forming mold, a back block is provided inside the side frame, a connecting cavity is provided at the top of the back block, a connecting block is provided inside the connecting cavity, the connecting block is fixed to the top of the side frame, a telescopic spring is fixed inside the connecting cavity, one end of the telescopic spring is fixedly connected to the connecting block, a knocking head is fixed on the end of the back block facing the plastic sheet forming mold, a side tooth is fixed on the side of the back block facing the rotating wheel, a pulley is fixed on the bottom of the rotating wheel, the rotating wheel in the middle position is located directly above the rotating gear, and is connected to the rotating gear through two pulleys, and two adjacent pulleys are connected by a belt.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The plastic sheet processing equipment described in the present invention starts the sheet conveyor belt to open the bottom of the mold, and cooperates with the pusher assembly to automatically push the plastic sheet out of the mold. The mold falls directly on the sheet conveyor belt and is continuously conveyed to the position of the next process by the sheet conveyor belt. The plastic sheet can be cooled during the process of being conveyed by the sheet conveyor belt to the next process. The workers do not need to take the formed plastic sheet directly out of the equipment, and can directly move the plastic sheet to the next process. This not only prevents the workers from directly touching the plastic sheet that has just been demolded and causing burns due to the temperature of the plastic sheet, but also the direct transfer of the plastic sheet reduces the possibility of collision between the plastic sheet and other objects, and prevents the plastic sheet from being subjected to external pressure and causing deformation of the sheet.

[0020] 2. The plastic sheet processing equipment described in the present invention, through the conveying of the conveyor belt, the opening and closing of the mold and the demolding operation of the mold, after the mold is half-opened, the plastic sheet is demolded from the mold and pushed onto the conveyor belt, and in the process of the mold being fully opened, fully closed, and then half-opened to push out the next plastic sheet, the conveyor belt continues to convey the plastic sheet, so that the plastic sheet moves out from the bottom of the mold, providing sufficient blanking space for the next plastic sheet, avoiding the problem of plastic sheet stacking and mutual extrusion and deformation, and when the rotating wheel rotates forward, each ratchet tooth engages with the side teeth to drive the back block and the knocking head to move backward, and when the ratchet tooth separates from the side teeth, the telescopic spring drives the back block and the knocking head to move forward, so that the knocking head can reciprocately knock on the plastic sheet forming mold, and accelerate the demolding speed of the plastic sheet in the plastic sheet forming mold through knocking vibration, thereby assisting the demolding of the pushing component and improving the demolding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is the overall structural diagram of the present invention;

[0023] Figure 2 It is a local structure cutaway view of the present invention. Figure 1 ;

[0024] Figure 3 The present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 It is a local structure section view of the present invention Figure 2 ;

[0026] Figure 5 The present invention Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 The present invention Figure 4 Enlarged view of point C in the middle;

[0028] Figure 7 This is a structural diagram of the mold bottom plate opening in the present invention;

[0029] Figure 8 It is a structural diagram of the pushing assembly and the driving assembly in the present invention;

[0030] Fig. 9 This is a schematic diagram of the rotation direction of the gear of the drive assembly in the present invention. Figure 1 ;

[0031] Fig.10 This is a schematic diagram of the rotation direction of the gear of the drive assembly in the present invention. Figure 2 ;

[0032] Fig.11 It is the local structure of the knocking component in the present invention Figure 1 ;

[0033] Fig.12 It is the local structure of the knocking component in the present invention Figure 2 ;

[0034] Fig.13 is a partial structural sectional view of the striking component in the present invention;

[0035] In the figure: 1, frame; 2, plate conveyor belt; 3, driving motor; 4, plastic plate forming assembly; 41, bracket; 42, plastic plate forming mold; 43, mold bottom plate; 44, rotating block; 45, rotating pin; 5, screw extruder; 6, pushing assembly; 61, housing; 62, piston block; 63, pushing pin; 64, return spring; 7, pushing assembly; 71, three-way valve; 72, first connecting pipe; 73, second connecting pipe; 74, pushing shell; 75, pushing piston; 76, pressing block; 77, pushing block; 78, connecting frame; 79, connecting column; 710, Guide groove; 8, driving assembly; 81, driving gear; 82, driven gear; 83, rotating column; 84, first bevel gear; 85, second bevel gear; 86, half-tooth gear one; 87, gear rack; 88, push-turn gear; 89, half-tooth gear two; 810, rotating gear; 9, knocking assembly; 91, support plate; 92, rotating wheel; 93, side frame; 94, back block; 95, pulley; 96, side teeth; 97, connecting cavity; 98, connecting block; 99, telescopic spring; 910, knocking head; 911, storage slot; 912, ratchet; 913, spring. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 13 As shown, a plastic sheet processing device according to an embodiment of the present invention comprises a frame 1, a sheet conveyor belt 2 arranged in the frame 1, a driving motor 3 installed on one side of the sheet conveyor belt 2, the driving motor 3 being installed on the side wall of the frame 1, and a plastic sheet forming component 4 arranged on the top of the frame 1, a screw extruder 5 being arranged on one side of the frame 1, the screw extruder 5 being used for melting and injecting plastic raw materials, a pushing component 6 being arranged on the top of the plastic sheet forming component 4, the pushing component 6 being used for pushing out the plastic sheet in the plastic sheet forming component 4, a pushing component 7 being arranged on one side of the pushing component 6, the pushing component 7 being used for driving the pushing component 6, a driving component 8 being arranged on the output end of the driving motor 3, the driving component 8 being used for opening and closing the plastic sheet forming component 4, and a knocking component (9) being arranged on one side of the plastic sheet forming component (4);

[0038] The plastic sheet forming assembly 4 includes a bracket 41 fixed on the top of the frame 1, a plastic sheet forming mold 42 installed in the bracket 41, a mold base plate 43 arranged at the bottom of the plastic sheet forming mold 42, a rotating block 44 is fixed at the middle position of one side of the mold base plate 43, and a rotating pin 45 is fixed at the top and bottom of the rotating block 44. The rotating block 44 is rotatably set at the bottom of the plastic sheet forming mold 42 through the rotating pin 45.

[0039] After the plastic sheet processing equipment pushes the formed plastic sheet out of the mold, the plastic sheet itself is at a high temperature and is softer than when it is completely cooled. During the transportation process, if it is subjected to external pressure, it will cause the sheet to deform. If the plastic sheet is sent to the next process after being cooled, it will not only waste a lot of time, but also cause mutual squeezing if the uncooled plastic sheets are stacked. If they are not stacked, they will take up a lot of space.

[0040] When the equipment is processing the plastic sheet, the raw material is put into the screw extruder 5, the screw extruder 5 is used to melt the raw material, and the molten plastic raw material is injected into the mold of the plastic sheet forming component 4 for forming;

[0041] After the formed plastic sheet is cooled, the driving motor 3 is started. When the output shaft of the driving motor 3 rotates 180°, the driving assembly 8 is cooperated to open the bottom of the mold of the plastic sheet forming assembly 4. The output shaft of the driving motor 3 rotates another 180°, and the pushing assembly 6, the pushing assembly 7 and the driving assembly 8 are cooperated to push out the plastic sheet formed in the mold, and the plastic sheet falls on the sheet conveyor belt 2. The output shaft of the driving motor 3 continues to rotate 360°, and the driving assembly 8 is cooperated to close the bottom of the mold of the plastic sheet forming assembly 4. At the same time, the pushing assembly 7 and the driving assembly 8 lose the force on the pushing assembly 6, and the pushing assembly 6 is reset. When the output shaft of the driving motor 3 continues to rotate 360° and the bottom of the mold is gradually closed, the driving motor 3 drives the sheet conveyor belt 2 to convey the plastic sheet. In this way, the processing of the plastic sheet can be completed.

[0042] The sheet conveyor belt 2 is started to open the bottom of the mold, and the pushing component 6 automatically pushes the plastic sheet out of the mold. The mold falls directly on the sheet conveyor belt 2 and is continuously conveyed to the position of the next process by the sheet conveyor belt 2. The plastic sheet can be cooled during the process of being conveyed by the sheet conveyor belt 2 to the next process. There is no need for workers to take the formed plastic sheet directly out of the equipment, and the plastic sheet can be directly moved to the next process. This not only prevents the staff from directly touching the plastic sheet that has just been demolded and causing burns from the temperature of the plastic sheet, but also the direct transfer of the plastic sheet reduces the possibility of collision between the plastic sheet and other objects, and prevents the plastic sheet from being subjected to external pressure and causing deformation of the sheet.

[0043] The screw extruder 5 injects the raw material into the plastic sheet forming mold 42 for forming. After cooling, the mold base plate 43 at the bottom of the plastic sheet forming mold 42 rotates 180° with the rotating pin 45 as the center to separate from the bottom of the plastic sheet forming mold 42. The bottom of the plastic sheet forming mold 42 is opened to remove the formed plastic sheet. The mold base plate 43 at the bottom of the plastic sheet forming mold 42 rotates 180° in the opposite direction with the rotating pin 45 as the center to reset. The bottom of the plastic sheet forming mold 42 is closed to form the next plastic sheet.

[0044] like Figures 1 to 4 , Figure 6 , Figures 8 to 10 As shown, the driving assembly 8 includes a driving gear 81 fixed to the output end of the driving motor 3, the top of the driving gear 81 is meshed with a driven gear 82, a rotating column 83 is fixed at the middle position of one side of the driven gear 82, one end of the rotating column 83 extends to the bracket 41 and a first bevel gear 84 is fixed therein, the top of the first bevel gear 84 is meshed with a second bevel gear 85, a semi-toothed gear 86 is fixed to the top of the second bevel gear 85, and a gear rack 87 is arranged outside the semi-toothed gear 86. A push-turn gear 88 is meshed on one side of the gear rack 87, and a half-tooth gear 2 89 is fixed to the bottom of the push-turn gear 88. A rotating gear 810 is meshed on one side of the half-tooth gear 2 89. The rotating gear 810 is fixed on the rotating pin 45 at the top of the rotating block 44. The size of the driven gear 82 is twice the size of the driving gear 81. The driving gear 81 rotates one circle to drive the meshed driven gear 82 to rotate half a circle. Teeth are set on both sides of the inside of the gear rack 87, and the gear rack 87 is meshed with the half-tooth gear 1 86.

[0045] After the plastic sheet is cooled and formed in the plastic sheet forming mold 42, the driving motor 3 is started, and the driving motor 3 drives the driving gear 81 to rotate 360° first, and the driving gear 81 drives the driven gear 82 to rotate 180°, and the driven gear 82 drives the first bevel gear 84 to rotate 180° through the rotating column 83, and the first bevel gear 84 drives the second bevel gear 85 and the half-toothed gear 1 86 at its top to rotate 180°, and the half-toothed gear 1 86 drives the meshing gear rack 87 to move, and the gear rack 87 drives the push-turn gear 88 and the half-toothed gear 2 89 at its bottom to rotate 180°, and the half-toothed gear 2 89 drives the rotating gear 810 and the rotating pin 45 at its bottom to rotate 180°, and the mold bottom plate 43 rotates 180° with the rotating pin 45 as the center of the circle to separate from the bottom of the plastic sheet forming mold 42. At this time, the bottom of the plastic sheet forming mold 42 is opened, and the rotation and movement directions of the half-toothed gear 1 86, the gear rack 87 and the push-turn gear 88 are as shown in FIG. Fig. 9 As shown;

[0046] The driving motor 3 drives the driving gear 81 to rotate another 360°, the driving gear 81 drives the driven gear 82 to rotate 180°, the driven gear 82 drives the first bevel gear 84 to rotate 180° through the rotating column 83, the first bevel gear 84 drives the second bevel gear 85 and the half-toothed gear 1 86 at its top to rotate 180°, the half-toothed gear 1 86 drives the meshing gear rack 87 to move in the opposite direction, the gear rack 87 drives the push-turn gear 88 and the half-toothed gear 2 89 at its bottom to rotate 180° in the opposite direction, the half-toothed gear 2 89 drives the rotating gear 810 and the rotating pin 45 at its bottom to rotate 180° in the opposite direction, the mold bottom plate 43 rotates 180° in the opposite direction with the rotating pin 45 as the center of the circle to reset to the bottom of the plastic sheet forming mold 42, at this time, the bottom of the plastic sheet forming mold 42 is closed, and the rotation and movement directions of the half-toothed gear 1 86, the gear rack 87 and the push-turn gear 88 are as shown in FIG. Fig.10 shown.

[0047] like Figure 1 and Figure 2 , Figure 4 and Figure 5 As shown, the pushing assembly 6 includes a casing 61 installed on both sides of the top of the bracket 41, a piston block 62 is arranged inside the casing 61, a pushing pin 63 is fixed at the middle position of the bottom of the piston block 62, the pushing pin 63 extends from the bracket 41 to the plastic sheet forming mold 42, a return spring 64 is wound around the outside of the pushing pin 63, the top of the return spring 64 is fixedly connected to the piston block 62, and the bottom of the return spring 64 is fixedly connected to the bottom end inside the casing 61.

[0048] A sufficient amount of hydraulic oil is pre-filled into the chamber at the top of the piston block 62 and the pushing assembly 7. When the driving motor 3 drives the active gear 81 to rotate 360° first, the gear rack 87 moves and cooperates with the pushing assembly 7 to push the hydraulic oil into the casing 61, and the hydraulic oil is used to push the piston block 62 downward to drive the push pin 63 downward. The downward push pin 63 pushes the molded plastic sheet in the plastic sheet forming mold 42 to make it detach from the plastic sheet forming mold 42 and fall onto the sheet conveyor belt 2. In the subsequent continuous rotation of the driving motor 3, the plastic sheet will be conveyed. The downward movement of the piston block 62 will squeeze the return spring 64 to make it contract. When the driving motor 3 drives the active gear 81 to rotate 360° again, the gear rack 87 moves in the opposite direction and does not cooperate with the pushing assembly 7 to push the hydraulic oil. The elastic force of the return spring 64 is used to push the piston block 62 upward to drive the push pin 63 to move upward and reset, and the upward movement of the piston block 62 pushes the hydraulic oil back into the pushing assembly 7.

[0049] like Figure 1 and Figure 2 , Figures 4 to 6 , Figures 8 to 10As shown, the pushing assembly 7 includes a first connecting pipe 72 installed on the top of the housing 61, a three-way valve 71 is installed between the two first connecting pipes 72, a second connecting pipe 73 is installed at one end of the three-way valve 71, and one end of the second connecting pipe 73 is connected to a pushing shell 74, and the pushing shell 74 is installed on the bracket 41. The pushing assembly 7 also includes a pushing piston 75 arranged inside the pushing shell 74, and a pressure block 76 is fixed to the back of the pushing piston 75. The pressure block 76 protrudes from the end of the pushing shell 74, and a pushing block 77 is arranged at one end of the pressure block 76. The top of the gear rack 87 A connecting column 79 is fixed at one end, and the connecting column 79 is placed in a guide groove 710. The guide groove 710 is opened at the top of the bracket 41. A connecting frame 78 is fixed on the top of the connecting column 79, and the connecting frame 78 is placed on the top of the bracket 41. The connecting frame 78 is fixedly connected to the push block 77. The length of the guide groove 710 is twice the distance between the push block 77 and the pressure block 76. The positions of the push block 77 and the pressure block 76 correspond to each other. The size of the connecting column 79 matches the size of the guide groove 710, and the connecting column 79 can slide inside the guide groove 710.

[0050] Hydraulic oil is filled into the three-way valve 71, the first connecting pipe 72, the second connecting pipe 73 and the push shell 74. During the process of driving the driving gear 81 to rotate 360° by the driving motor 3, the gear rack 87 pushes the push block 77 toward the pressure block 76 through the connecting column 79 and the connecting frame 78. The moving directions of the connecting frame 78 and the push block 77 are as follows: Fig. 9 As shown, during the process of the driving gear 81 rotating from 180° to 360°, the push block 77 begins to contact with the pressing block 76 and gradually pushes the pushing piston 75 at the end of the pressing block 76 to move, and the pushing piston 75 gradually pushes the hydraulic oil in the pushing shell 74 into the housing 61 through the second connecting pipe 73, the three-way valve 71 and the first connecting pipe 72, and uses the pressure of the hydraulic oil to push the first connecting pipe 72 downward to make the second connecting pipe 73 at the bottom move downward for demoulding;

[0051] During the process of the driving motor 3 driving the driving gear 81 to rotate 360°, the gear rack 87 pulls the push block 77 to move away from the pressure block 76 through the connecting column 79 and the connecting frame 78. The moving directions of the connecting frame 78 and the push block 77 are as follows: Fig.10 As shown, the push block 77 gradually moves away from the pressure block 76 and gradually loses its thrust on the pushing piston 75. The return spring 64 in the housing 61 pushes the piston block 62 upward to push the hydraulic oil back into the pushing housing 74. The pushing piston 75 is moved and reset by the hydraulic oil, and the positions of the pushing piston 75 and the pressure block 76 are gradually restored to their original state for the next push.

[0052] like Figures 11 to 13As shown, the knocking assembly 9 includes three support plates 91 fixed on one side of the plastic sheet forming mold 42, the support plate 91 is located above the rotating gear 810, a rotating wheel 92 is rotatably provided at the bottom of the support plate 91, a receiving groove 911 is provided on the outer wall of the rotating wheel 92, a ratchet 912 is rotatably provided inside the receiving groove 911, a spring piece 913 is fixed inside the receiving groove 911, one end of the spring piece 913 is in contact with the side wall of the ratchet 912, a side frame 93 is provided on one side of the rotating wheel 92, the side frame 93 is fixed on the plastic sheet forming mold 42, a back block 94 is provided inside the side frame 93, and a connecting cavity is provided on the top of the back block 94 97, a connecting block 98 is provided inside the connecting cavity 97, and the connecting block 98 is fixed to the top of the side frame 93. A telescopic spring 99 is fixed inside the connecting cavity 97, and one end of the telescopic spring 99 is fixedly connected to the connecting block 98. A striking head 910 is fixed to the end of the back block 94 facing the plastic sheet forming mold 42, and a side tooth 96 is fixed to the side of the back block 94 facing the rotating wheel 92. A pulley 95 is fixed to the bottom of the rotating wheel 92. The rotating wheel 92 in the middle position is located directly above the rotating gear 810, and is connected to the rotating gear 810 through two pulleys 95, and the two adjacent pulleys 95 are connected by a belt.

[0053] When the plastic sheet forming mold 42 is opened, the rotating gear 810 drives the rotating wheel 92 to Fig.13 The direction indicated by the middle arrow is positive, and at this time, a ratchet tooth 912 on the outer side of the rotating wheel 92 is meshed with the side tooth 96, and the side tooth 96 is pushed by the ratchet tooth 912 to drive the back block 94 to Fig.13 The middle back block 94 moves in the direction indicated by the arrow, and the back block 94 pulls the knocking head 910 to move backward, and at the same time pulls the telescopic spring 99 to stretch it. When a ratchet 912 here separates from the side teeth 96, the ratchet 912 loses its effect on the side teeth 96, and the elastic force of the telescopic spring 99 is used to push the back block 94 back to drive the knocking head 910 to move toward the position of the outer wall of the plastic plate forming mold 42. When the rotating wheel 92 rotates forward, each ratchet 912 engages with the side teeth 96 and drives the back block 94 and the knocking head 910 to move backward. When the ratchet 912 separates from the side teeth 96, the telescopic spring 99 drives the back block 94 and the knocking head 910 to move forward. In this way, the knocking head 910 can reciprocately knock on the plastic plate forming mold 42, and accelerate the demoulding speed of the plastic plate in the plastic plate forming mold 42 by knocking and vibrating, thereby assisting the demoulding of the pusher assembly 6 and improving the demoulding effect;

[0054] The rotating gear 810 drives the rotating wheels 92 to rotate by driving the pulley 95 to rotate. The three rotating wheels 92 are connected by the pulley 95, and the pulleys 95 are connected by belts. When the rotating wheel 92 at the middle position rotates forward under the action of the rotating gear 810, the other two also rotate accordingly. When the rotating wheel 92 at the middle position rotates reversely under the action of the rotating gear 810, the other two also reverse accordingly.

[0055] When the plastic sheet forming mold 42 is closed, the rotating gear 810 drives the rotating wheel 92 to Fig.13 The ratchet 912 is reversed in the opposite direction as indicated by the middle arrow. When the ratchet 912 contacts the side teeth 96, the arc-shaped outer wall of the side teeth 96 squeezes the ratchet 912 and pushes it into the receiving groove 911. The ratchet 912 squeezes the spring sheet 913 to shrink it. When the ratchet 912 is separated from the side teeth 96, the ratchet 912 is not affected by the pressure of the arc-shaped outer wall of the side teeth 96, and is ejected from the receiving groove 911 by the elastic force of the spring sheet 913. When the plastic sheet forming mold 42 is closed, the rotating wheel 92 is reversed, and the back block 94 does not move and does not knock on the plastic sheet forming mold 42.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic sheet processing device, comprising a frame (1), a sheet conveyor belt (2) arranged in the frame (1), a drive motor (3) installed on one side of the sheet conveyor belt (2), the drive motor (3) being installed on a side wall of the frame (1), and a plastic sheet forming assembly (4) arranged on the top of the frame (1), characterized in that: A screw extruder (5) is arranged on one side of the frame (1), and the screw extruder (5) is used for melting and injecting plastic raw materials. A pusher assembly (6) is arranged on the top of the plastic sheet forming assembly (4), and the pusher assembly (6) is used for pushing out the plastic sheet in the plastic sheet forming assembly (4). A pressing assembly (7) is arranged on one side of the pusher assembly (6), and the pressing assembly (7) is used for driving the pusher assembly (6). A driving assembly (8) is arranged on the output end of the driving motor (3), and the driving assembly (8) is used for opening and closing the plastic sheet forming assembly (4). A knocking assembly (9) is arranged on one side of the plastic sheet forming assembly (4); The plastic sheet forming assembly (4) comprises a bracket (41) fixed on the top of a frame (1), a plastic sheet forming mold (42) installed in the bracket (41), a mold base plate (43) arranged at the bottom of the plastic sheet forming mold (42), a rotating block (44) fixed at the middle position of one side of the mold base plate (43), a rotating pin (45) fixed at the top and bottom of the rotating block (44), and the rotating block (44) is rotatably arranged at the bottom of the plastic sheet forming mold (42) via the rotating pin (45).

2. The plastic sheet processing equipment according to claim 1, characterized in that: The driving assembly (8) comprises a driving gear (81) fixed to the output end of the driving motor (3), the top of the driving gear (81) is meshed with a driven gear (82), a rotating column (83) is fixed at the middle position of one side of the driven gear (82), one end of the rotating column (83) extends to the bracket (41) and is fixed with a first bevel gear (84), the top of the first bevel gear (84) is meshed with a second bevel gear (85), the top of the second bevel gear (85) is fixed with a half-toothed gear 1 (86), the outside of the half-toothed gear 1 (86) is provided with a gear rack (87), one side of the gear rack (87) is meshed with a push-turn gear (88), the bottom of the push-turn gear (88) is fixed with a half-toothed gear 2 (89), one side of the half-toothed gear 2 (89) is meshed with a rotating gear (810), and the rotating gear (810) is fixed to a rotating pin (45) at the top of the rotating block (44).

3. The plastic sheet processing equipment according to claim 2, characterized in that: The size of the driven gear (82) is twice that of the driving gear (81), and one rotation of the driving gear (81) drives the meshing driven gear (82) to rotate half a rotation.

4. The plastic sheet processing equipment according to claim 2, characterized in that: Gear teeth are arranged on both sides of the gear rack (87), and the gear rack (87) is meshed with the half-toothed gear 1 (86).

5. The plastic sheet processing equipment according to claim 2, characterized in that: The pusher assembly (6) comprises a casing (61) mounted on both sides of the top of the bracket (41), a piston block (62) is arranged inside the casing (61), a pusher pin (63) is fixed at the middle position of the bottom of the piston block (62), the pusher pin (63) extends from the bracket (41) to the plastic sheet forming mold (42), a return spring (64) is wound around the outside of the pusher pin (63), the top of the return spring (64) is fixedly connected to the piston block (62), and the bottom of the return spring (64) is fixedly connected to the bottom end inside the casing (61).

6. The plastic sheet processing equipment according to claim 5, characterized in that: The pushing assembly (7) comprises a first connecting pipe (72) installed on the top of the casing (61), a three-way valve (71) is installed between the two first connecting pipes (72), a second connecting pipe (73) is installed at one end of the three-way valve (71), and a pushing shell (74) is connected to one end of the second connecting pipe (73), and the pushing shell (74) is installed on the bracket (41).

7. The plastic sheet processing equipment according to claim 5, characterized in that: The pushing assembly (7) also includes a pushing piston (75) arranged inside the pushing shell (74), a pressure block (76) is fixed to the back of the pushing piston (75), the pressure block (76) protrudes from the end of the pushing shell (74), a pushing block (77) is arranged at one end of the pressure block (76), a connecting column (79) is fixed to one end of the top of the gear rack (87), the connecting column (79) is placed in the guide groove (710), the guide groove (710) is opened at the top of the bracket (41), a connecting frame (78) is fixed to the top of the connecting column (79), the connecting frame (78) is placed on the top of the bracket (41), and the connecting frame (78) is fixedly connected to the pushing block (77).

8. The plastic sheet processing equipment according to claim 7, characterized in that: The length of the guide groove (710) is twice the distance between the push block (77) and the pressing block (76), and the positions of the push block (77) and the pressing block (76) correspond exactly.

9. The plastic sheet processing equipment according to claim 7, characterized in that: The size of the connecting post (79) matches the size of the guide groove (710), and the connecting post (79) can slide inside the guide groove (710).

10. The plastic sheet processing equipment according to claim 7, characterized in that: The knocking assembly (9) comprises three support plates (91) fixed on one side of a plastic sheet forming mold (42), the support plates (91) being located above a rotating gear (810), a rotating wheel (92) being rotatably arranged at the bottom of the support plates (91), a receiving groove (911) being provided on the outer side wall of the rotating wheel (92), a ratchet (912) being rotatably arranged inside the receiving groove (911), a spring sheet (913) being fixed inside the receiving groove (911), one end of the spring sheet (913) being in contact with the side wall of the ratchet (912), a side frame (93) being provided on one side of the rotating wheel (92), the side frame (93) being fixed on the plastic sheet forming mold (42), a back block (94) being provided inside the side frame (93), a connecting cavity (94) being provided on the top of the back block (94) 97), a connecting block (98) is arranged inside the connecting cavity (97), the connecting block (98) is fixed to the top end inside the side frame (93), a telescopic spring (99) is fixed inside the connecting cavity (97), one end of the telescopic spring (99) is fixedly connected to the connecting block (98), a striking head (910) is fixed to one end of the back block (94) facing the plastic sheet forming mold (42), a side tooth (96) is fixed to the side of the back block (94) facing the rotating wheel (92), a pulley (95) is fixed to the bottom of the rotating wheel (92), the rotating wheel (92) at the middle position is located just above the rotating gear (810), and is connected to the rotating gear (810) through two pulleys (95), and two adjacent pulleys (95) are connected by a belt.

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