Flame-retardant PVC plastic preparation device and process

Abstract

The application relates to the technical field of compression molding equipment, and provides a flame-retardant PVC plastic preparation device and process, which comprises a bearing rack, a rotating shell, a lower mold assembly and an upper mold assembly. The bearing rack is provided with a first driving part and a rotating sleeve. The rotating sleeve is fixedly provided with a first transmission gear connected with the first driving part. The middle part of the rotating shell is further fixedly connected with a first rotating pipe sleeved in the rotating sleeve. The side wall of the rotating shell is provided with a transmission assembly connected with the meshing teeth of the side wall of the bearing rack. A lead screw is further arranged in the rotating shell. The lead screw is provided with a second transmission gear meshingly connected with the transmission assembly. The lower mold assembly comprises a lower mold body, a rotating shaft, a connecting rod and a sliding block. The lower mold body is connected with the rotating shell through the rotating shaft. The sliding block is movably sleeved on the lead screw. The two ends of the connecting rod are respectively hinged with the lower mold body and the sliding block. The upper mold assembly comprises a second telescopic rod, an upper mold and a fixing frame. The second telescopic rod on the fixing frame is provided with the upper mold.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of PVC plastic preparation equipment, in particular to a flame-retardant PVC plastic preparation device and process. BACKGROUND

[0002] Plastic products are life, industrial and other products made of plastic as the main raw material. In the compression molding device for the production of flame-retardant PVC plastic products, the plastic is generally pressed into a specific shape by the extrusion of the upper mold and the lower mold.

[0003] Although the existing compression molding equipment for PVC plastic product production can automatically control the movement of the upper mold to automatically compress the raw material in the lower mold to obtain a plastic product, it is inconvenient for the staff to directly take out the plastic product in the lower mold, and there will be plastic residues in the lower mold cavity after taking out the plastic product. If the residues cannot be cleaned out in time, it will affect the quality of the product, and the existing compression molding equipment cannot automatically clean the internal residues. SUMMARY

[0004] The purpose of the present application is to provide a flame-retardant PVC plastic preparation device and process, which aims to solve the problems of inconvenience and poor practicability when using existing equipment.

[0005] To achieve the above purpose, the present application provides the following technical scheme, a flame-retardant PVC plastic preparation device, comprising a bearing frame, a rotating shell, a lower mold assembly and an upper mold assembly, the bearing frame is provided with a first driving part, the first driving part comprises a driving motor and a first driving gear, the middle part of the bearing frame is further movably connected with a rotating sleeve, the rotating sleeve is fixedly provided with a first transmission gear engaged with the first driving gear, the middle part of the rotating shell is further fixedly connected with a first rotating pipe, the first rotating pipe is movably sleeved in the rotating sleeve, the side wall of the rotating shell is provided with a transmission assembly, the bearing frame is provided with a plurality of engagement teeth, the transmission assembly is engaged with the engagement teeth, the rotating shell is further provided with a lead screw, the lead screw is fixedly provided with a second transmission gear engaged with the transmission assembly, the lower mold assembly comprises a lower mold body, a rotating shaft, a connecting rod and a sliding block, the rotating shaft is rotatably connected with the side wall of the rotating shell, the sliding block is movably sleeved on the lead screw, the connecting rod is hingedly connected with the lower mold body and the sliding block at both ends, the upper mold assembly comprises a second telescopic rod, an upper mold and a fixed frame, the fixed frame is fixedly connected with the bottom of the bearing frame, one end of the second telescopic rod is fixedly connected with the fixed frame, and the other end of the second telescopic rod is provided with the upper mold.

[0006] As a further scheme of the present application, the lifting assembly is internally provided with a straight rod movably sleeved in the first rotating pipe; and a support frame is installed on the straight rod at the top of the lower mold body; the cleaning assembly and the slag collecting assembly are both installed on the support frame; the slag collecting assembly is movably connected with the cleaning assembly; the upper mold and the cleaning assembly are located directly above the lower mold body, and the upper mold and the cleaning assembly are symmetrically distributed about the first rotating pipe axis; the number of teeth on the first driving gear is designed to be several, so that the first driving gear and the first transmission gear are intermittently transmitted, and the first driving gear drives the first transmission gear, the rotating shell and the lower mold assembly to rotate by a certain angle every time the first driving gear rotates one circle; when the lower mold assembly rotates to be directly below the upper mold assembly, the second telescopic rod drives the upper mold to move towards the lower mold body, so as to press and form the raw material in the lower mold body; after the forming is completed, the second telescopic rod drives the upper mold to move away from the lower mold body.

[0007] As a further scheme of the present application, the bottom of the rotating sleeve is in contact with the end face of the bottom of the first rotating pipe, and the inner wall of the rotating sleeve is provided with a limiting groove extending along the axial direction; the outer wall of the first rotating pipe is connected with a limiting rib insertedly connected with the limiting groove; a plurality of first telescopic rods are further fixedly connected on the bearing frame; one end of the first telescopic rod near the rotating shell is fixedly connected with a support block; the bottom of the rotating shell is provided with a second circular guide rail; the support block is slidably connected with the second circular guide rail; and the plurality of first telescopic rods and the support blocks are symmetrically distributed about the first rotating pipe axis.

[0008] As a further scheme of the present application, the transmission assembly comprises a third transmission gear, a fourth transmission gear and a rotating rod; the side wall of the rotating shell is provided with an opening; the rotating rod is movably connected in the opening; the third transmission gear and the fourth transmission gear are fixedly sleeved on the rotating rod; the fourth transmission gear is in meshing connection with the meshing teeth; the third transmission gear is in meshing connection with the second transmission gear; the third transmission gear and the second transmission gear are designed as bevel gears; and the fourth transmission gear is designed as a straight gear.

[0009] As a further scheme of the present application, the number of the transmission assembly, the lower mold assembly and the lead screw is several; the plurality of transmission assemblies, the lower mold assemblies and the lead screws are symmetrically distributed about the first rotating pipe axis; the rotating shell is provided with a plurality of cavities; the lead screw is installed in the cavity; the bottom of the lower mold body is in contact connection with the upper surface of the cavity; the sliding block is slidably connected with the bottom of the cavity; the cavity is provided with an avoiding hole above for avoiding the connecting rod; and the cavity is further provided with a reset part; the reset part comprises a fixed shell and a clamping spring in the fixed shell; the fixed shell is fixedly connected with the inner wall of the cavity; the lead screw is movably sleeved in the fixed shell; and the clamping spring is sleeved on the lead screw.

[0010] As a further scheme of the present application, the lifting assembly further comprises a supporting plate and a third telescopic rod, the supporting plate is fixedly connected to the straight rod at an end away from the support frame, and the two ends of the third telescopic rod are respectively hingedly connected to the carrying frame and the supporting plate.

[0011] As a further scheme of the present application, the cleaning assembly comprises a second driving part, a transmission part and a cleaning part, the second driving part comprises a driving motor and a second driving gear fixedly connected to the support frame, the transmission part is designed as a rotating ring rotatably connected to the support frame, the outer ring of the rotating ring is provided with outer meshing teeth in meshing connection with the second driving gear, the cleaning part comprises a fifth transmission gear, a second rotating tube and a cleaning disc, the second rotating tube is movably connected to the support frame, the fifth transmission gear is fixedly sleeved on the second rotating tube, the inner ring of the rotating ring is provided with inner meshing teeth in meshing connection with the fifth transmission gear, the cleaning disc is fixedly connected to the second rotating tube at an end away from the fifth transmission gear, the surface of the cleaning disc is provided with a plurality of needle clusters, the plurality of needle clusters are in contact connection with the inner wall of the lower mold body, the number of the cleaning parts is a plurality, and the plurality of cleaning parts are distributed in axial symmetry about the transmission part.

[0012] As a further scheme of the present application, the slag collecting assembly comprises a slag collecting box, an air suction pump, an air suction pipe and a fixing pipe, the slag collecting box is fixedly connected to the support frame, the air suction end of the air suction pump is connected with a plurality of air suction pipes, the other ends of the air suction pipes are fixedly connected with the fixing pipes, the fixing pipes are fixedly connected to the support frame, the end of the second rotating tube away from the fifth transmission gear is rotatably connected in the fixing pipe, the side wall of the second rotating tube is provided with a slag suction port, the exhaust end of the air suction pump is connected with the slag collecting box, the bottom of the support frame is fixedly connected with a sealing cover, and the end face of the sealing cover away from the support frame is in contact connection with the upper surface of the lower mold body.

[0013] As a further scheme of the present application, the bottom of the rotating shell is embedded with a plurality of balls, the carrying frame is provided with a first circular guide rail above, and the plurality of balls are rotatably connected in the first circular guide rail.

[0014] In summary, the present application has the following beneficial effects:

[0015] 1、The number of teeth on the first drive gear is designed to be several, so that the first drive gear and the first transmission gear are intermittently driven, the first drive gear drives the first transmission gear, the rotating shell and the lower mold assembly to rotate by a certain angle every time it rotates a circle, when the lower mold assembly rotates to the position directly below the upper mold assembly, the second telescopic rod drives the upper mold to move towards the lower mold body, which can press the raw material in the lower mold body into a shape, after the molding is completed, the second telescopic rod drives the upper mold to move away from the lower mold body, the driving motor drives the rotating shell and the lower mold assembly to rotate to the position of the meshing teeth through the first drive gear, when the rotating shell continues to rotate, the transmission assembly rotating around the axis of the rotating sleeve achieves the purpose of driving the lead screw to rotate through the meshing connection with the meshing teeth, the rotating lead screw achieves the purpose of driving the lower mold body to rotate around the rotating shaft through the straight line motion of the sliding block, the rotated lower mold body is inclined at a certain angle with the horizontal direction, which is convenient for workers to take out the products molded inside, and has the characteristics of high work efficiency and convenient use;

[0016] 2、When the fourth transmission gear on the rotating shell is disengaged from the meshing teeth, the rotating shell continues to rotate around the central axis of the rotating sleeve, under the action of the lost transmission power, the snap spring sleeved on the lead screw achieves the purpose of driving the lead screw to rotate in the opposite direction through elastic deformation, the reverse rotating lead screw achieves the purpose of driving the lower mold body to rotate in the opposite direction through the reverse motion of the sliding block, so as to reset the lower mold body, in summary, the whole movement process of the lower mold body is: horizontal static state during compression molding, after compression molding, it rotates to a certain angle outwardly, and then rotates to a certain angle in the opposite direction to return to the horizontal static state, after adding raw materials into the lower mold body, the upper mold assembly can continue to compression mold through movement, which has the characteristics of automatic compression molding and convenient taking out of the internal products;

[0017] 3、The first telescopic rod drives the rotating shell to rise to a certain height through the support block, at this time the limiting rib on the first rotating pipe is not in the limiting groove on the inner wall of the rotating sleeve, the rotating rotating sleeve can continue to drive the first rotating pipe and the rotating shell to rotate, but the transmission assembly is completely disengaged from the meshing teeth, when the rotating shell continues to rotate, the internal lower mold body will not continue to rotate, that is, it always maintains a horizontal state, the driving motor can drive the transmission member to rotate through the rotation of the second drive gear, the rotating transmission member drives the several second rotating pipes and the cleaning disc to rotate through the meshing connection of the internal meshing teeth and the several fifth transmission gears, the needle cluster on the surface of the rotating cleaning disc can clean the residues adhered to the inner wall of the lower mold body, under the vacuum adsorption action of the air suction pump, the residues cleaned from the lower mold body can enter the second rotating pipe through the residue suction port, the residues enter the residue collection box through the second rotating pipe, the fixed pipe and the air suction pipe, thereby realizing the function of automatically collecting residues. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of a preparation device for a fire-retardant PVC plastic according to an embodiment of the present application.

[0019] Figure 2 It is a structural schematic view of a rotating shell and a lower mold assembly according to an embodiment of the present application.

[0020] Figure 3 It is a structural schematic view of a bearing rack according to an embodiment of the present application.

[0021] Figure 4 It is a top view of the bearing rack according to an embodiment of the present application.

[0022] Figure 5 It is a sectional view of a rotating sleeve according to an embodiment of the present application.

[0023] Figure 6 It is a structural schematic view of a lifting assembly, a cleaning assembly and a slag collecting assembly according to an embodiment of the present application. Figure 1 It is a partial enlarged view of a according to an embodiment of the present application.

[0024] Figure 7 It is a structural schematic view of a lifting assembly, a cleaning assembly and a slag collecting assembly according to an embodiment of the present application.

[0025] Figure 8 It is a perspective view of a support frame according to an embodiment of the present application.

[0026] Figure 9 It is a perspective view of a cleaning assembly according to an embodiment of the present application.

[0027] Figure 10 It is an assembly view of a cleaning assembly and a support frame according to an embodiment of the present application.

[0028] Figure 11 It is a perspective view of a slag collecting assembly according to an embodiment of the present application.

[0029] Figure 12 It is an assembly view of a cleaning assembly and a slag collecting assembly according to an embodiment of the present application.

[0030] Figure 13 It is an assembly view of a slag collecting assembly, a cleaning assembly and a support frame according to an embodiment of the present application.

[0031] Figure 14 It is a position distribution view of a sealing cover relative to a cleaning assembly according to an embodiment of the present application.

[0032] : 1-carrier frame, 11-first driving part, 12-rotating sleeve, 121-limiting groove, 13-first transmission gear, 14-first telescopic rod, 141-supporting block, 15-engaging tooth, 151-first circular guide rail, 2-rotating shell, 21-first rotating pipe, 211-limiting rib, 22-cavity, 23-screw rod, 231-second transmission gear, 24-resetting part, 241-fixed shell, 242-clasp spring, 25-transmission assembly, 251-third transmission gear, 252-fourth transmission gear, 253-rotating rod, 26-rolling ball, 27-second circular guide rail, 3-lower die assembly, 31-lower die body, 32-rotating shaft, 33-connecting rod, 34-sliding block, 4-upper die assembly, 41-second telescopic rod, 42-upper die, 43-fixing frame, 5-lifting assembly, 51-supporting frame, 511-sealing cover, 52-straight rod, 53-supporting plate, 54-third telescopic rod, 6-cleaning assembly, 61-second driving part, 611-driving motor, 612-second driving gear, 62-transmission piece, 63-cleaning part, 631-fifth transmission gear, 632-second rotating pipe, 633- slag suction port, 634-cleaning disc, 7-slag collecting assembly, 71-slag collecting box body, 72-air suction pump, 73-air suction pipe, 74-fixed pipe. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0034] In the description of the present application, the orientations or positional relationships indicated by the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0036] Please refer to Figures 1 to 14The embodiment of the present application provides a kind of preparation device of flame-retardant PVC plastic, including bearing rack 1, rotating shell 2, lower mould component 3 and upper mould component 4, first drive part 11 is installed on the bearing rack 1, the first drive part 11 includes drive motor and first drive gear, rotating sleeve 12 is further movably connected in the middle part of bearing rack 1, first transmission gear 13 meshingly connected with first drive gear is fixedly sleeved on rotating sleeve 12, first rotating tube 21 is further fixedly connected in the middle part of rotating shell 2, first rotating tube 21 is movably sleeved in rotating sleeve 12, transmission assembly 25 is installed on the side wall of rotating shell 2, the side wall of bearing rack 1 is provided with a plurality of meshing teeth 15, transmission assembly 25 is meshingly connected with meshing tooth 15, lead screw 23 is further installed in rotating shell 2, second transmission gear 231 meshingly connected with transmission assembly 25 is fixedly sleeved on lead screw 23, lower mould component 3 includes lower mould body 31, rotating shaft 32, connecting rod 33 and sliding block 34, rotating shaft 32 meshingly connected with the side wall of rotating shell 2 is installed on lower mould body 31, sliding block 34 is movably sleeved on lead screw 23, the both ends of connecting rod 33 are respectively hinged with lower mould body 31 and sliding block 34, upper mould component 4 includes second telescopic rod 41, upper mould 42 and fixed frame 43, the bottom of fixed frame 43 is fixedly connected with bearing rack 1, one end of second telescopic rod 41 is fixedly connected on fixed frame 43, and the other end of second telescopic rod 41 is provided with upper mould 42.

[0037] Further, the bottom of rotating shell 2 is embedded with a plurality of balls 26, the upper of bearing rack 1 is provided with first circular guide rail 151, and the plurality of balls 26 are rollingly connected in first circular guide rail 151.

[0038] In the embodiment of the present application, the number of teeth on the first drive gear is designed to be several, so that the first drive gear and the first transmission gear 13 are intermittently driven, and the first drive gear drives the first transmission gear 13, the rotating shell 2 and the lower mold assembly 3 to rotate by a certain angle every time the first drive gear rotates one circle. When the lower mold assembly 3 rotates to the position directly below the upper mold assembly 4, the second telescopic rod 41 drives the upper mold 42 to move towards the lower mold body 31, so that the raw material in the lower mold body 31 can be pressed and molded. After the molding is completed, the second telescopic rod 41 drives the upper mold 42 to move away from the lower mold body 31. The driving motor continues to drive the rotating shell 2 and the lower mold assembly 3 to rotate to the position of the meshing teeth 15. When the rotating shell 2 continues to rotate, the transmission assembly 25 rotating around the axis of the rotating sleeve 12 drives the lead screw 23 to rotate by the meshing connection with the meshing teeth 15. The rotating lead screw 23 drives the lower mold body 31 to rotate around the rotating shaft 32 by driving the sliding block 34 to move linearly. The rotated lower mold body 31 is inclined to the horizontal direction by a certain angle, which is convenient for the staff to take out the products molded inside, and has the characteristics of high working efficiency and convenient use.

[0039] Please refer to Figures 1 to 5 In an embodiment of the present application, the bottom of the rotating sleeve 12 is in contact with the end face of the bottom of the first rotating pipe 21, and the inner wall of the rotating sleeve 12 is provided with a limiting groove 121 extending along the axial direction. The outer wall of the first rotating pipe 21 is connected with a limiting rib 211 inserted and connected with the limiting groove 121. A plurality of first telescopic rods 14 are further fixedly connected to the bearing rack 1. One end of each first telescopic rod 14 close to the rotating shell 2 is fixedly connected with a supporting block 141. The bottom of the rotating shell 2 is provided with a second circular guide rail 27, and the supporting block 141 is in sliding connection with the second circular guide rail 27. The plurality of first telescopic rods 14 and the supporting blocks 141 are symmetrically distributed about the first rotating pipe 21.

[0040] In the embodiment of the present application, when the first telescopic rod 14 drives the rotating shell 2 to rise to a certain height through the supporting block 141, the limiting rib 211 on the first rotating pipe 21 is not in the limiting groove 121 of the inner wall of the rotating sleeve 12. The rotating rotating sleeve 12 can continue to drive the first rotating pipe 21 and the rotating shell 2 to rotate, but the transmission assembly 25 is completely separated from the meshing teeth 15. When the rotating shell 2 continues to rotate, the internal lower mold body 31 will not continue to rotate, that is, it will remain in a horizontal state. This is designed to clean the residues in the lower mold body 31.

[0041] Please refer to Figures 1 to 6In one of the embodiments of the present application, the transmission assembly 25 comprises a third transmission gear 251, a fourth transmission gear 252 and a rotating rod 253, the rotating shell 2 is provided with an opening in the side wall, the rotating rod 253 is movably connected in the opening, the third transmission gear 251 and the fourth transmission gear 252 are fixedly sleeved on the rotating rod 253, the fourth transmission gear 252 is in meshing connection with the meshing teeth 15, the third transmission gear 251 is in meshing connection with the second transmission gear 231, the third transmission gear 251 and the second transmission gear 231 are designed as bevel gears, and the fourth transmission gear 252 is designed as a spur gear.

[0042] In the embodiment of the present application, when the rotating rotating shell 2 drives the fourth transmission gear 252 to rotate around the central axis of the rotating sleeve 12, the fourth transmission gear 252 can be in meshing connection with the meshing teeth 15, so as to drive the rotating rod 253 and the third transmission gear 251 to rotate, and the rotating third transmission gear 251 drives the lead screw 23 to rotate through the meshing connection with the second transmission gear 231.

[0043] Please refer to Figures 1 to 6 In one of the embodiments of the present application, the number of the transmission assembly 25, the lower mold assembly 3 and the lead screw 23 is several, the several transmission assemblies 25, the lower mold assemblies 3 and the lead screws 23 are distributed about the first rotating pipe 21, the rotating shell 2 is provided with several cavities 22, the lead screw 23 is installed in the cavity 22, the lower mold body 31 is in contact and connection with the upper surface of the cavity 22, the sliding block 34 is in sliding connection with the bottom of the cavity 22, the cavity 22 is provided with an avoiding hole for avoiding the connecting rod 33, the cavity 22 is further provided with a reset part 24, the reset part 24 comprises a fixed shell 241 and a snap spring 242 in the fixed shell 241, the fixed shell 241 is fixedly connected in the inner wall of the cavity 22, the lead screw 23 is movably sleeved in the fixed shell 241, and the snap spring 242 is sleeved on the lead screw 23.

[0044] In the embodiment of the present application, when the fourth transmission gear 252 on the rotating shell 2 is disengaged from the meshing teeth 15, the rotating shell 2 still continues to rotate around the central axis of the rotating sleeve 12, under the action of losing the transmission power, the clamping spring 242 sleeved on the lead screw 23 achieves the purpose of driving the lead screw 23 to rotate reversely through the mode of elastic deformation, the reversely rotating lead screw 23 achieves the purpose of driving the lower mold body 31 to rotate reversely through the mode of driving the slider 34 to move reversely, so as to reset the lower mold body 31, and the whole movement process of the lower mold body 31 is that: when being pressed, it is in a horizontal static state, after being pressed, it rotates to a certain angle outwardly, and then reversely rotates to a certain angle to return to the horizontal static state, after raw materials are added into the lower mold body 31, the upper mold assembly 4 can continue to press by movement, and the cycle is repeated, so that the automatic pressing and the characteristics of facilitating the taking out of the internal product are achieved.

[0045] Please refer to Figure 1 、 Figures 7 to 13 In one embodiment of the present application, the lifting assembly 5, the cleaning assembly 6 and the slag collecting assembly 7 are further included, the straight rod 52 movably sleeved in the first rotating pipe 21 is arranged in the lifting assembly 5, and the support frame 51 located at the top of the lower mold body 31 is mounted on the straight rod 52, the cleaning assembly 6 and the slag collecting assembly 7 are both mounted on the support frame 51, the slag collecting assembly 7 is movably connected with the cleaning assembly 6, the upper mold 42 and the cleaning assembly 6 are located directly above the lower mold body 31, and the upper mold 42 and the cleaning assembly 6 are distributed in axial symmetry about the first rotating pipe 21, the lifting assembly 5 further includes the supporting plate 53 and the third telescopic rod 54, one end of the supporting plate 53 away from the support frame 51 is fixedly connected with the straight rod 52, and the third telescopic rod 54 is hingedly connected with the bearing frame 1 and the supporting plate 53 at both ends.

[0046] In the embodiment of the present application, the telescopic movement of the third telescopic rod 54 can drive the straight rod 52 to move up and down along the axial direction of the first rotating pipe 21, and the purpose is to adjust the distance between the cleaning assembly 6 and the lower mold body 31, when the product in the lower mold body 31 is taken out and the lower mold body 31 is reset to the horizontal state, the third telescopic rod 54 lowers the cleaning assembly 6 to the position in contact with the inner wall of the lower mold body 31 through the straight rod 52 to clean the impurities, when the impurities in one of the lower mold bodies 31 are cleaned, the third telescopic rod 54 drives the cleaning assembly 6 to rise again through the straight rod 52, then the rotating shell 2 rotates to rotate another lower mold body 31 to the position directly below the cleaning assembly 6, and then the above operation is repeatedly continued, so that the function of automatically cleaning the impurities is realized.

[0047] Please refer to Figures 8 to 10In one of the embodiments of the present application, the cleaning assembly 6 comprises a second driving part 61, a transmission part 62 and a cleaning part 63, the second driving part 61 comprises a driving motor 611 fixedly connected on the support frame 51 and a second driving gear 612, the transmission part 62 is designed as a rotating ring rotatably connected on the support frame 51, the outer ring of the rotating ring is provided with outer meshing teeth in meshing connection with the second driving gear 612, the cleaning part 63 comprises a fifth transmission gear 631, a second rotating tube 632 and a cleaning disc 634, the second rotating tube 632 is movably connected on the support frame 51, the fifth transmission gear 631 is fixedly sleeved on the second rotating tube 632, the inner ring of the rotating ring is provided with inner meshing teeth in meshing connection with the fifth transmission gear 631, the cleaning disc 634 is fixedly connected on one end of the second rotating tube 632 away from the fifth transmission gear 631, the surface of the cleaning disc 634 is provided with a plurality of needle clusters, the plurality of needle clusters are in contact connection with the inner wall of the lower mold body 31, the number of the cleaning part 63 is a plurality, and the plurality of cleaning parts 63 are distributed in axial symmetry about the transmission part 62.

[0048] In the embodiment of the present application, the driving motor 611 can drive the transmission part 62 to rotate by driving the second driving gear 612 to rotate, the rotating transmission part 62 drives the plurality of second rotating tubes 632 and the cleaning disc 634 to rotate by the inner meshing teeth in meshing connection with the plurality of fifth transmission gears 631, and the needle clusters on the surface of the rotating cleaning disc 634 can clean the residues adhered to the inner wall of the lower mold body 31, thereby having the characteristic of automatically cleaning the residues.

[0049] Please refer to Figure 11 and Figure 14 In one of the embodiments of the present application, the slag collecting assembly 7 comprises a slag collecting box 71, an air suction pump 72, an air suction pipe 73 and a fixing pipe 74, the slag collecting box 71 is fixedly connected with the support frame 51, the air suction end of the air suction pump 72 is connected with a plurality of air suction pipes 73, the other end of the air suction pipe 73 is fixedly connected with the fixing pipe 74, the fixing pipe 74 is fixedly connected on the support frame 51, one end of the second rotating tube 632 away from the fifth transmission gear 631 is rotatably connected in the fixing pipe 74, the side wall of the second rotating tube 632 is provided with a slag suction port 633, the exhaust end of the air suction pump 72 is connected with the slag collecting box 71, the bottom of the support frame 51 is fixedly connected with a sealing cover 511, the end face of the sealing cover 511 away from the support frame 51 is in contact connection with the upper surface of the lower mold body 31, and the sealing effect of the sealing cover 511 can prevent the cleaned residues from splashing to the outside.

[0050] In the embodiment of the present application, under the vacuum adsorption of the air suction pump 72, the residues cleaned out of the lower die body 31 can enter the second rotating pipe 632 through the residue suction port 633, and then enter the residue collecting box 71 along the second rotating pipe 632, the fixed pipe 74 and the air suction pipe 73, thereby realizing the function of automatically collecting residues and having the characteristic of high working efficiency.

[0051] The working process of the embodiment of the present application is as follows: compression molding and material taking: the number of teeth on the first driving gear is designed to be several, so that the first driving gear and the first transmission gear 13 are intermittently driven, the first driving gear drives the first transmission gear 13, the rotating shell 2 and the lower die assembly 3 to rotate by a certain angle every time the first driving gear rotates one circle, when the lower die assembly 3 rotates to the position directly below the upper die assembly 4, the second telescopic rod 41 drives the upper die 42 to move towards the lower die body 31, so that the raw material in the lower die body 31 is compressed and molded, after the molding is completed, the second telescopic rod 41 drives the upper die 42 to move away from the lower die body 31, the driving motor drives the rotating shell 2 and the lower die assembly 3 to rotate to the position of the meshing teeth 15 through the first driving gear, when the rotating shell 2 continues to rotate, the rotating rotating shell 2 drives the fourth transmission gear 252 to rotate around the center axis of the rotating sleeve 12, so that the fourth transmission gear 252 is connected with the meshing teeth 15, thereby driving the rotating rod 253 and the third transmission gear 251 to rotate, the rotating third transmission gear 251 drives the lead screw 23 to rotate through the meshing connection with the second transmission gear 231, the rotating lead screw 23 drives the lower die body 31 to rotate around the rotating shaft 32 through the linear motion of the sliding block 34, the rotated lower die body 31 is inclined to the horizontal direction by a certain angle, so that the staff can take out the product molded inside, when the fourth transmission gear 252 on the rotating shell 2 is separated from the meshing teeth 15, the rotating shell 2 continues to rotate around the center axis of the rotating sleeve 12, under the action of the lost driving force, the clasp spring 242 on the lead screw 23 drives the lead screw 23 to rotate reversely through the elastic deformation, the reversely rotating lead screw 23 drives the lower die body 31 to rotate reversely through the reverse motion of the sliding block 34, so that the lower die body 31 can be reset, in summary, the whole movement process of the lower die body 31 is: horizontal static state during compression molding, rotating by a certain angle to the outside after compression molding, and then rotating reversely by a certain angle to return to the horizontal static state, after the raw material is added into the lower die body 31, the upper die assembly 4 can continue to compression mold through the movement, and so on.

[0052] The cleaning residue step: the first telescopic rod 14 drives the rotating shell 2 to rise to a certain height through the support block 141, at this time the limiting rib 211 on the first rotating pipe 21 is not in the limiting groove 121 of the inner wall of the rotating sleeve 12, and the rotating rotating sleeve 12 can continue to drive the first rotating pipe 21 and the rotating shell 2 to rotate, but the transmission assembly 25 is completely separated from the meshing teeth 15, when the rotating shell 2 continues to rotate, the lower mold body 31 in the interior will not continue to rotate, that is, always keep horizontal state, the driving motor 611 can drive the transmission member 62 to rotate by rotating the second driving gear 612, the rotating transmission member 62 drives the plurality of second rotating pipes 632 and the cleaning disc 634 to rotate by the way of meshing connection of the inner meshing teeth and the plurality of fifth transmission gears 631, the needle cluster on the surface of the rotating cleaning disc 634 can clean the residue adhered to the inner wall of the lower mold body 31, under the vacuum adsorption of the air suction pump 72, the residue cleaned in the lower mold body 31 can enter the second rotating pipe 632 through the residue suction port 633, the residue enters the residue collecting box 71 through the second rotating pipe 632, the fixed pipe 74 and the air suction pipe 73, so as to realize the function of automatically collecting residue.

[0053] For those skilled in the art, although several embodiments and examples of the present application are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the application. These new embodiments can be implemented in other various ways, and various omissions, substitutions, changes can be made within the scope of the application without departing from the spirit of the application. These embodiments and their modifications are included in the scope and spirit of the application, and are included in the scope of the application and its equivalents.

[0054] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each example can be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A device for preparing flame-retardant PVC plastic, comprising a bearing frame (1), a rotating housing (2), a lower mold assembly (3) and an upper mold assembly (4), characterized in that, The bearing frame (1) is provided with a first driving part (11), the first driving part (11) comprises a driving motor and a first driving gear, a rotating sleeve (12) is movably connected to the middle part of the bearing frame (1), a first transmission gear (13) is fixedly arranged on the rotating sleeve (12) and is in meshing connection with the first driving gear, a first rotating pipe (21) is fixedly connected to the middle part of the rotating shell (2), the first rotating pipe (21) is movably arranged in the rotating sleeve (12), a transmission assembly (25) is arranged on the side wall of the rotating shell (2), a plurality of meshing teeth (15) are arranged on the side wall of the bearing frame (1), the transmission assembly (25) is in meshing connection with the meshing teeth (15), a lead screw (23) is arranged in the rotating shell (2), a second transmission gear (231) is fixedly arranged on the lead screw (23) and is in meshing connection with the transmission assembly (25), the lower die assembly (3) comprises a lower die body (31), a rotating shaft (32), a connecting rod (33) and a sliding block (34), the rotating shaft (32) is rotatably connected to the side wall of the rotating shell (2) and is arranged on the lower die body (31), the sliding block (34) is movably arranged on the lead screw (23), and the two ends of the connecting rod (33) are hingedly connected with the lower die body (31) and the sliding block (34), the upper die assembly (4) comprises a second telescopic rod (41), an upper die (42) and a fixed frame (43), the fixed frame (43) is fixedly connected to the bottom of the bearing frame (1), one end of the second telescopic rod (41) is fixedly connected to the fixed frame (43), and the other end of the second telescopic rod (41) is provided with the upper die (42), further comprising a lifting assembly (5), a cleaning assembly (6) and a slag collecting assembly (7), the lifting assembly (5) is provided with a straight rod (52) movably arranged in the first rotating pipe (21) and a supporting frame (51) arranged on the straight rod (52) and located at the top of the lower die body (31), the cleaning assembly (6) and the slag collecting assembly (7) are arranged on the supporting frame (51), the slag collecting assembly (7) is movably connected with the cleaning assembly (6), the upper die (42) and the cleaning assembly (6) are located directly above the lower die body (31), and the upper die (42) and the cleaning assembly (6) are symmetrically distributed about the first rotating pipe (21).The bottom of the rotating sleeve (12) is in contact with the end face of the bottom of the first rotating pipe (21), and the inner wall of the rotating sleeve (12) is provided with a limiting groove (121) extending in the axial direction, the outer wall of the first rotating pipe (21) is connected with a limiting rib (211) insertedly connected with the limiting groove (121), a plurality of first telescopic rods (14) are further fixedly connected on the bearing rack (1), one end of the first telescopic rod (14) close to the rotating shell (2) is fixedly connected with a supporting block (141), the bottom of the rotating shell (2) is provided with a second circular guide rail (27), the supporting block (141) is in sliding connection with the second circular guide rail (27), and the plurality of first telescopic rods (14) and the supporting block (141) are distributed in axial symmetry about the first rotating pipe (21); the lifting assembly (5) further comprises a supporting plate (53) and a third telescopic rod (54), the supporting plate (53) is fixedly connected to one end of the straight rod (52) away from the supporting frame (51), and the two ends of the third telescopic rod (54) are respectively hinged to the bearing rack (1) and the supporting plate (53).

2. The device for preparing flame-retardant PVC plastic according to claim 1, characterized in that, The transmission assembly (25) comprises a third transmission gear (251), a fourth transmission gear (252) and a rotating rod (253), the rotating shell (2) is provided with an opening in the side wall, the rotating rod (253) is movably connected in the opening, the third transmission gear (251) and the fourth transmission gear (252) are fixedly sleeved on the rotating rod (253), the fourth transmission gear (252) is in meshing connection with the meshing teeth (15), the third transmission gear (251) is in meshing connection with the second transmission gear (231), the third transmission gear (251) and the second transmission gear (231) are designed as bevel gears, and the fourth transmission gear (252) is designed as a spur gear.

3. The device for preparing flame-retardant PVC plastic according to claim 2, characterized in that, The transmission assembly (25), the lower mold assembly (3) and the screw rod (23) are in axial symmetry distribution about the first rotating pipe (21), a plurality of cavities (22) are arranged in the rotating shell (2), the screw rod (23) is installed in the cavity (22), the bottom of the lower mold body (31) is in contact connection with the upper surface of the cavity (22), the sliding block (34) is in sliding connection with the bottom of the cavity (22), the cavity (22) is provided with an avoiding hole for avoiding the connecting rod (33) above, and the cavity (22) is further provided with a reset part (24), the reset part (24) comprises a fixed shell (241) and a clamping spring (242) in the fixed shell (241), the fixed shell (241) is fixedly connected to the inner wall of the cavity (22), the screw rod (23) is movably sleeved in the fixed shell (241), and the clamping spring (242) is sleeved on the screw rod (23).

4. The device for preparing flame-retardant PVC plastic according to claim 3, characterized in that, The cleaning assembly (6) comprises a second driving part (61), a transmission part (62) and a cleaning part (63), the second driving part (61) comprises a driving motor (611) and a second driving gear (612) fixedly connected to the support frame (51), the transmission part (62) is designed as a rotating ring rotatably connected to the support frame (51), the outer ring of the rotating ring is provided with outer meshing teeth in meshing connection with the second driving gear (612), the cleaning part (63) comprises a fifth transmission gear (631), a second rotating pipe (632) and a cleaning disc (634), the second rotating pipe (632) is movably connected to the support frame (51), the fifth transmission gear (631) is fixedly sleeved on the second rotating pipe (632), the inner ring of the rotating ring is provided with inner meshing teeth in meshing connection with the fifth transmission gear (631), the cleaning disc (634) is fixedly connected to one end of the second rotating pipe (632) away from the fifth transmission gear (631), a plurality of needle clusters are arranged on the surface of the cleaning disc (634) and in contact connection with the inner wall of the lower mold body (31), and the number of the cleaning part (63) is several, and the several cleaning parts (63) are in axial symmetry distribution about the transmission part (62).

5. A device for preparing flame-retardant PVC plastic according to claim 4, characterized in that, The slag collecting assembly (7) comprises a slag collecting box body (71), an air suction pump (72), air suction pipes (73) and fixing pipes (74), the slag collecting box body (71) is fixedly connected with the support frame (51), the air suction ends of the air suction pump (72) are connected with a plurality of air suction pipes (73), the other ends of the air suction pipes (73) are fixedly connected with fixing pipes (74), the fixing pipes (74) are fixedly connected on the support frame (51), one end of the second rotating pipe (632) away from the fifth transmission gear (631) is rotatably connected in the fixing pipe (74), the side wall of the second rotating pipe (632) is provided with a slag suction port (633), the air exhaust end of the air suction pump (72) is connected with the slag collecting box body (71), the bottom of the support frame (51) is fixedly connected with a sealing cover (511), the end face of the sealing cover (511) away from the support frame (51) is in contact with the upper surface of the lower mold body (31).

6. The device for preparing flame-retardant PVC plastic according to claim 5, characterized in that, The bottom of the rotating shell (2) is embedded with a plurality of balls (26), the upper portion of the bearing frame (1) is provided with a first circular guide rail (151), and the plurality of balls (26) are rotatably connected in the first circular guide rail (151).

7. The preparation process of the flame-retardant PVC plastic preparation device as described in claim 6, characterized in that, The method comprises the following steps: The first driving gear drives the first transmission gear (13), the rotating shell (2) and the lower mold assembly (3) to rotate by a certain angle when rotating one circle, when the lower mold assembly (3) rotates to the position directly below the upper mold assembly (4), the second telescopic rod (41) drives the upper mold (42) to move towards the lower mold body (31), and the raw material in the lower mold body (31) can be pressed and molded.

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