Flame-retardant PVC (polyvinyl chloride) plastic preparation device and process

Abstract

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

Description

Technical Field

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

[0002] Plastic products are a general term for daily and industrial products made of plastic as the main raw material. In the compression molding device used in the production of flame-retardant PVC plastic products, the plastic is generally pressed into a specific shape through the extrusion cooperation of the upper mold and the lower mold.

[0003] Although the existing compression molding equipment used for the production of PVC plastic products can automatically control the movement of the upper mold to automatically compress the raw materials in the lower mold to obtain plastic products, it is inconvenient for the staff to directly take out the plastic products in the lower mold. Moreover, there will be plastic residues in the lower mold cavity after the plastic products are taken out. If the residues cannot be cleaned up quickly and in time, the quality of the product will be affected. The existing compression molding equipment cannot automatically clean up the internal residues. Summary of the invention

[0004] The purpose of the present invention is to provide a flame retardant PVC plastic preparation device and process, aiming to solve the problems of inconvenience in use and poor practicality when using existing equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flame-retardant PVC plastic preparation device, comprising a carrying frame, a rotating shell, a lower mold assembly and an upper mold assembly, the carrying frame is equipped with a first driving part, the first driving part comprises a driving motor and a first driving gear, the middle part of the carrying frame is also movably connected with a rotating sleeve, the rotating sleeve is fixedly sleeved with a first transmission gear meshing with the first driving gear, the middle part of the rotating shell is also fixedly connected with a first rotating tube, the first rotating tube is movably sleeved in the rotating sleeve, the side wall of the rotating shell is equipped with a transmission assembly, and the side wall of the carrying frame is provided with a plurality of meshing gears. teeth, the transmission assembly is meshed with the meshing teeth, a screw rod is also installed in the rotating shell, and a second transmission gear meshed with the transmission assembly is fixedly sleeved on the screw rod, the lower mold assembly comprises a lower mold body, a rotating shaft, a connecting rod and a slider, a rotating shaft rotatably connected to the side wall of the rotating shell is installed on the lower mold body, the slider is movably sleeved on the screw rod, and the two ends of the connecting rod are respectively hinged to the lower mold body and the slider, the upper mold assembly comprises a second telescopic rod, an upper mold and a fixed frame, the fixed frame is fixedly connected to the bottom of the supporting frame, one end of the second telescopic rod is fixedly connected to the fixed frame, and the other end of the second telescopic rod is installed with an upper mold.

[0006] As a further scheme of the present invention, it also includes a lifting assembly, a cleaning assembly and a slag collecting assembly, the lifting assembly is provided with a straight rod movably sleeved in the first rotating tube; and a support frame mounted on the straight rod and located at the top of the lower mold body, the cleaning assembly and the slag collecting assembly are both mounted on the support frame, the slag collecting assembly is movably connected to 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 tube axis, the number of teeth on the first driving gear is designed to be several, so that there is intermittent transmission between the first driving gear and the first transmission gear, and each rotation of the first driving gear drives the first transmission gear, the rotating shell and the lower mold assembly to rotate a certain angle. When the lower mold assembly rotates to directly below the upper mold assembly, the second telescopic rod drives the upper mold to move in a direction close to the lower mold body, so that the raw material in the lower mold body can be compression molded. After the molding is completed, the second telescopic rod drives the upper mold to move in a direction away from the lower mold body.

[0007] As a further solution of the present invention, the bottom of the rotating sleeve is in contact with the end surface of the bottom of the first rotating tube, 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 tube is connected with a limiting rib that is plugged into the limiting groove, and the supporting frame is also fixedly connected to a plurality of first telescopic rods, and a support block is fixedly connected to one end of the first telescopic rod close to the rotating shell, and a second circular guide rail is provided at the bottom of the rotating shell, and the support block is slidably connected to the second circular guide rail, and the plurality of first telescopic rods and the support block are symmetrically distributed about the first rotating tube axis.

[0008] As a further solution of the present invention, the transmission assembly includes 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 meshed with meshing teeth. The third transmission gear is meshed with the second transmission gear. The third transmission gear and the second transmission gear are designed as helical gears, and the fourth transmission gear is designed as a spur gear.

[0009] As a further solution of the present invention, the number of the transmission assembly, the lower mold assembly and the screw rod is several, and the several transmission assemblies, the lower mold assembly and the screw rod are symmetrically distributed about the first rotating tube axis, and the rotating shell is provided with several cavities, and the screw rod is installed in the cavity, the bottom of the lower mold body is in contact with the upper surface of the cavity, the slider is slidably connected to the bottom of the cavity, and an avoidance hole for avoiding the connecting rod is opened above the cavity, and a reset part is also provided in the cavity, and the reset part includes a fixed shell and a retaining spring located in the fixed shell, the fixed shell is fixedly connected to the inner wall of the cavity, the screw rod is movably sleeved in the fixed shell, and the retaining spring is sleeved on the screw rod.

[0010] As a further solution of the present invention, the lifting assembly also includes a support plate and a third telescopic rod. The support plate is fixedly connected to one end of the straight rod away from the support frame, and both ends of the third telescopic rod are respectively hinged to the load-bearing frame and the support plate.

[0011] As a further solution of the present invention, the cleaning assembly includes a second driving part, a transmission member and a cleaning part, the second driving part includes a driving motor and a second driving gear fixedly connected to the support frame, the transmission member is designed to be a rotating ring rotatably connected to the support frame, the outer ring of the rotating ring is provided with external meshing teeth meshing with the second driving gear, the cleaning part includes a fifth transmission gear, a second rotating tube and a cleaning disk, 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 internal meshing teeth meshing with the fifth transmission gear, the cleaning disk is fixedly connected to the end of the second rotating tube away from the fifth transmission gear, a plurality of needle clusters are provided on the surface of the cleaning disk, the plurality of needle clusters are in contact with the inner wall of the lower mold body, the number of the cleaning parts is several, and the plurality of cleaning parts are symmetrically distributed about the transmission member axis.

[0012] As a further scheme of the present invention, the slag collecting assembly includes a slag collecting box, an air suction pump, an air suction pipe and a fixed pipe. The slag collecting box is fixedly connected to the support frame, the air suction end of the air suction pump is connected to a plurality of air suction pipes, the other end of the air suction pipe is fixedly connected to the fixed pipe, the fixed pipe is fixedly connected to the support frame, the end of the second rotating tube away from the fifth transmission gear is rotatably connected in the fixed 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 to the slag collecting box, the bottom of the support frame is fixedly connected to a sealing cover, and the end face of the sealing cover away from the support frame is in contact with the upper surface of the lower mold body.

[0013] As a further solution of the present invention, a plurality of balls are embedded in the bottom of the rotating shell, a first circular guide rail is provided above the supporting frame, and the plurality of balls are rollingly connected in the first circular guide rail.

[0014] In summary, the beneficial effects of the present invention are: 1. The number of teeth on the first driving gear is designed to be several, so that there is intermittent transmission between the first driving gear and the first transmission gear. Each rotation of the first driving gear drives the first transmission gear, the rotating shell and the lower mold assembly to rotate a certain angle. When the lower mold assembly rotates to the bottom of the upper mold assembly, the second telescopic rod drives the upper mold to move in the direction close to the lower mold body, so that the raw material in the lower mold body can be compression molded. After the molding is completed, the second telescopic rod drives the upper mold to move in the direction away from the lower mold body. The driving motor continues to drive the rotating shell and the lower mold assembly to rotate to the position where the meshing teeth are located through the first driving gear. When the rotating shell continues to rotate, the transmission assembly rotating around the axis of the rotating sleeve is connected to the meshing teeth to drive the screw rod to rotate. The rotating screw rod drives the slider to make a linear motion to drive the lower mold body to rotate around the rotating shaft. The rotated lower mold body is inclined at a certain angle to the horizontal direction, which is convenient for the staff to take out the internally molded products. It has the characteristics of high work efficiency and convenient use. 2. When the fourth transmission gear on the rotating housing is disengaged from the meshing teeth, the rotating housing continues to rotate around the central axis of the rotating sleeve. When the transmission force is lost, the retaining spring sleeved on the screw rod achieves the purpose of driving the screw rod to rotate in the opposite direction by elastic deformation. The screw rod rotating in the opposite direction drives the slider to move in the opposite direction to drive the lower mold body to rotate in the opposite direction, thereby resetting the lower mold body. In summary, the entire movement process of the lower mold body is: it is in a horizontal static state during compression molding, and after compression molding, it first rotates toward the outside at a certain angle, and then rotates in the opposite direction at a certain angle to return to the horizontal static state. After adding raw materials into the lower mold body, the upper mold assembly can continue to perform compression molding through movement, and this cycle is repeated, which has the characteristics of automatic compression molding and easy removal of internal products; 3. After the first telescopic rod drives the rotating shell to rise to a certain height through the support block, the limiting rib on the first rotating tube is not out of the limiting groove on the inner wall of the rotating sleeve. The rotating rotating sleeve can continue to drive the first rotating tube and the rotating shell to rotate. However, the transmission assembly is completely disengaged from the meshing teeth. When the rotating shell continues to rotate, the lower mold body inside will not continue to rotate, that is, it will always remain in a horizontal state. The driving motor can drive the transmission member to rotate by driving the second driving gear to rotate. The rotating transmission member drives several second rotating tubes and cleaning disks to rotate by meshing connection with several fifth transmission gears through internal meshing teeth. The needle clusters on the surface of the rotating cleaning disk can clean up the residues adhering to the inner wall of the lower mold body. Under the vacuum adsorption action of the suction pump, the residues cleaned up in the lower mold body can enter the second rotating tube through the residue suction port. The residues enter the residue collecting box along the second rotating tube, the fixed tube and the suction tube, thereby realizing the function of automatically collecting the residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a flame retardant PVC plastic preparation device according to an embodiment of the present invention.

[0016] Figure 2 It is a schematic structural diagram of a rotating shell and a lower mold assembly in an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of the structure of the support frame in an embodiment of the present invention.

[0018] Figure 4 FIG. 4 is a top view of a supporting frame in an embodiment of the present invention.

[0019] Figure 5 It is a cross-sectional view of a rotating sleeve in an embodiment of the present invention.

[0020] Figure 6 For the present invention Figure 1 A partial enlarged view of a.

[0021] Figure 7 It is a schematic diagram of the structures of the lifting assembly, the cleaning assembly and the slag collecting assembly in an embodiment of the present invention.

[0022] Figure 8 It is a three-dimensional diagram of a support frame in an embodiment of the present invention.

[0023] Fig. 9 It is a three-dimensional diagram of a cleaning component in an embodiment of the present invention.

[0024] Fig.10 It is an assembly diagram of the cleaning component and the support frame in an embodiment of the present invention.

[0025] Fig.11 It is a stereoscopic diagram of the slag collecting assembly in an embodiment of the present invention.

[0026] Fig.12 It is an assembly diagram of the cleaning component and the slag collecting component in the embodiment of the present invention.

[0027] Fig.13 It is an assembly diagram of the slag collecting assembly, the cleaning assembly and the support frame in the embodiment of the present invention.

[0028] Fig.14 1 is a position distribution diagram of the sealing cover relative to the cleaning component in an embodiment of the present invention.

[0029] Figure markings: 1-carrying frame, 11-first driving part, 12-rotating sleeve, 121-limiting groove, 13-first transmission gear, 14-first telescopic rod, 141-support block, 15-meshing teeth, 151-first circular guide rail, 2-rotating shell, 21-first rotating tube, 211-limiting rib, 22-cavity, 23-screw, 231-second transmission gear, 24-reset part, 241-fixed shell, 242-circlip, 25-transmission assembly, 251-third transmission gear, 252-fourth transmission gear, 253-rotating rod, 26-ball, 27-second circular guide rail, 3-lower mold assembly, 31-lower Mold body, 32-rotating shaft, 33-connecting rod, 34-slider, 4-upper mold assembly, 41-second telescopic rod, 42-upper mold, 43-fixed frame, 5-lifting assembly, 51-support frame, 511-sealing cover, 52-straight rod, 53-support plate, 54-third telescopic rod, 6-cleaning assembly, 61-second driving part, 611-driving motor, 612-second driving gear, 62-transmission member, 63-cleaning part, 631-fifth transmission gear, 632-second rotating tube, 633-slag suction port, 634-cleaning plate, 7-slag collection assembly, 71-slag collection box, 72-suction pump, 73-suction pipe, 74-fixed pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0033] See also Figures 1 to 14A flame-retardant PVC plastic preparation device provided by an embodiment of the present invention comprises a bearing frame 1, a rotating shell 2, a lower mold assembly 3 and an upper mold assembly 4, wherein a first driving part 11 is installed on the bearing frame 1, and the first driving part 11 comprises a driving motor and a first driving gear, and a rotating sleeve 12 is movably connected to the middle of the bearing frame 1, and a first transmission gear 13 meshingly connected with the first driving gear is fixedly sleeved on the rotating sleeve 12, and a first rotating tube 21 is fixedly connected to the middle of the rotating shell 2, and the first rotating tube 21 is movably sleeved in the rotating sleeve 12, and a transmission assembly 25 is installed on the side wall of the rotating shell 2, and a plurality of meshing teeth 15 are arranged on the side wall of the bearing frame 1, and the transmission assembly 25 is meshingly connected with the meshing teeth 15 Then, a screw rod 23 is also installed in the rotating shell 2, and a second transmission gear 231 meshing with the transmission assembly 25 is fixedly sleeved on the screw rod 23. The lower mold assembly 3 includes a lower mold body 31, a rotating shaft 32, a connecting rod 33 and a slider 34. The lower mold body 31 is provided with a rotating shaft 32 rotatably connected to the side wall of the rotating shell 2, and the slider 34 is movably sleeved on the screw rod 23. The two ends of the connecting rod 33 are respectively hinged to the lower mold body 31 and the slider 34. The upper mold assembly 4 includes a second telescopic rod 41, an upper mold 42 and a fixed frame 43. The fixed frame 43 is fixedly connected to the bottom of the supporting 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 an upper mold 42.

[0034] Furthermore, a plurality of balls 26 are embedded in the bottom of the rotating shell 2 , a first circular guide rail 151 is provided above the supporting frame 1 , and the plurality of balls 26 are rollingly connected in the first circular guide rail 151 .

[0035] In the embodiment of the present invention, the number of teeth on the first driving gear is designed to be several, so that there is intermittent transmission between the first driving gear and the first transmission gear 13. Each rotation of the first driving gear drives the first transmission gear 13, the rotating shell 2 and the lower mold assembly 3 to rotate a certain angle. When the lower mold assembly 3 rotates to the bottom of the upper mold assembly 4, the second telescopic rod 41 drives the upper mold 42 to move toward the direction close to the lower mold body 31, so that the raw material in the lower mold body 31 can be compression molded. After the molding is completed, the second telescopic rod 41 drives the upper mold 42 to move in the direction away from the lower mold body 31, and the driving electric The machine continues to drive the rotating shell 2 and the lower mold 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 transmission assembly 25 rotating around the axis of the rotating sleeve 12 is engaged with the meshing teeth 15 to drive the screw rod 23 to rotate. The rotating screw rod 23 drives the slider 34 to make a linear motion to drive the lower mold body 31 to rotate around the rotating shaft 32. The rotated lower mold body 31 is inclined at a certain angle to the horizontal direction, which is convenient for the staff to take out the internally formed products. It has the characteristics of high work efficiency and easy use.

[0036] See also Figures 1 to 5 In one embodiment of the present invention, the bottom of the rotating sleeve 12 is in contact with the end surface of the bottom of the first rotating tube 21, and the inner wall of the rotating sleeve 12 is provided with a limiting groove 121 extending along the axial direction, and the outer wall of the first rotating tube 21 is connected with a limiting rib 211 plugged into the limiting groove 121. A plurality of first telescopic rods 14 are also fixedly connected to the supporting frame 1, and a support block 141 is fixedly connected to one end of the first telescopic rod 14 close to the rotating shell 2. A second circular guide rail 27 is provided at the bottom of the rotating shell 2, and the support block 141 is slidably connected to the second circular guide rail 27. The plurality of first telescopic rods 14 and the support block 141 are symmetrically distributed about the axis of the first rotating tube 21.

[0037] In the embodiment of the present invention, after the first telescopic rod 14 drives the rotating shell 2 to rise to a certain height through the support block 141, the limiting rib 211 on the first rotating tube 21 is not out of the limiting groove 121 on the inner wall of the rotating sleeve 12. The rotating rotating sleeve 12 can continue to drive the first rotating tube 21 and the rotating shell 2 to rotate. However, the transmission assembly 25 is completely disengaged from the meshing teeth 15. When the rotating shell 2 continues to rotate, the lower mold body 31 inside will not continue to rotate, that is, it will maintain a horizontal state. This is designed for cleaning the residue in the lower mold body 31.

[0038] See also Figures 1 to 6In one embodiment of the present invention, the transmission assembly 25 includes a third transmission gear 251, a fourth transmission gear 252 and a rotating rod 253. The side wall of the rotating shell 2 is provided with an opening, and 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, and the fourth transmission gear 252 is meshed with the meshing teeth 15. The third transmission gear 251 is meshed with the second transmission gear 231. The third transmission gear 251 and the second transmission gear 231 are designed as helical gears, and the fourth transmission gear 252 is designed as a spur gear.

[0039] In the embodiment of the present invention, 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 meshed and 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 achieves the purpose of driving the screw 23 to rotate by meshing and connecting with the second transmission gear 231.

[0040] See also Figures 1 to 6 In one embodiment of the present invention, the number of the transmission assembly 25, the lower mold assembly 3 and the screw rod 23 is several, and the several transmission assemblies 25, the lower mold assembly 3 and the screw rod 23 are symmetrically distributed about the first rotating tube 21 axis, and the rotating shell 2 is provided with several cavities 22, and the screw rod 23 is installed in the cavity 22. The bottom of the lower mold body 31 is in contact with the upper surface of the cavity 22, the slider 34 is slidably connected to the bottom of the cavity 22, and an avoidance hole for avoiding the connecting rod 33 is opened above the cavity 22. A reset part 24 is also provided in the cavity 22, and the reset part 24 includes a fixed shell 241 and a retaining spring 242 located 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 retaining spring 242 is sleeved on the screw rod 23.

[0041] In the embodiment of the present invention, after the fourth transmission gear 252 on the rotating shell 2 is disengaged from the meshing teeth 15, the rotating shell 2 continues to rotate around the central axis of the rotating sleeve 12. When the transmission force is lost, the retaining spring 242 mounted on the screw rod 23 drives the screw rod 23 to rotate in the opposite direction by elastic deformation. The screw rod 23 that rotates in the opposite direction drives the slider 34 to move in the opposite direction to drive the lower mold body 31 to rotate in the opposite direction, thereby resetting the lower mold body 31. In summary, the entire movement process of the lower mold body 31 is: it is in a horizontal stationary state during compression molding, and after compression molding, it first rotates toward the outside by a certain angle, and then rotates in the opposite direction by a certain angle to return to the horizontal stationary state. After adding raw materials into the lower mold body 31, the upper mold assembly 4 can continue to perform compression molding through movement, and this cycle is repeated. It has the characteristics of automatic compression molding and easy removal of internal products.

[0042] See also Figure 1 , Figures 7 to 13 In one embodiment of the present invention, it also includes a lifting assembly 5, a cleaning assembly 6 and a slag collecting assembly 7, wherein the lifting assembly 5 is provided with a straight rod 52 movably sleeved in the first rotating tube 21; and a support frame 51 mounted on the straight rod 52 and located at the top of the lower mold body 31, 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 to 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 symmetrically distributed about the first rotating tube 21 axis, the lifting assembly 5 also includes a support plate 53 and a third telescopic rod 54, the support plate 53 is fixedly connected to one end of the straight rod 52 away from the support frame 51, and the two ends of the third telescopic rod 54 are respectively hinged to the supporting frame 1 and the support plate 53.

[0043] In the embodiment of the present invention, the telescopic movement of the third telescopic rod 54 can drive the straight rod 52 to perform a lifting movement along the axial direction of the first rotating tube 21, so as to adjust the distance between the cleaning assembly 6 and the lower mold body 31. After the product in the lower mold body 31 is taken out and the lower mold body 31 is restored to a horizontal state, the third telescopic rod 54 lowers the cleaning assembly 6 to a position in contact with the inner wall of the lower mold body 31 through the straight rod 52 to clean impurities. After 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, and then the rotating shell 2 rotates the other lower mold body 31 to the entire bottom of the cleaning assembly 6 by rotating, and then continues to repeat the above operations, thereby realizing the function of automatically cleaning impurities.

[0044] See also Figures 8 to 10In one embodiment of the present invention, the cleaning assembly 6 includes a second driving part 61, a transmission member 62 and a cleaning part 63. The second driving part 61 includes a driving motor 611 and a second driving gear 612 fixedly connected to the support frame 51. The transmission member 62 is designed to be a rotating ring rotatably connected to the support frame 51. The outer ring of the rotating ring is provided with external meshing teeth meshing with the second driving gear 612. The cleaning part 63 includes a fifth transmission gear 631, a second rotating tube 632 and a cleaning disk 634. The second rotating tube 632 It is movably connected to the support frame 51, and the fifth transmission gear 631 is fixedly sleeved on the second rotating tube 632. The inner ring of the rotating ring is provided with internal meshing teeth meshing with the fifth transmission gear 631. The cleaning disk 634 is fixedly connected to the end of the second rotating tube 632 away from the fifth transmission gear 631. A plurality of needle clusters are provided on the surface of the cleaning disk 634. The plurality of needle clusters are in contact with the inner wall of the lower mold body 31. The number of the cleaning parts 63 is several, and the plurality of cleaning parts 63 are symmetrically distributed about the transmission member 62 axis.

[0045] In an embodiment of the present invention, the driving motor 611 can drive the transmission member 62 to rotate by driving the second driving gear 612 to rotate. The rotating transmission member 62 drives the plurality of second rotating tubes 632 and the cleaning disk 634 to rotate by being meshed and connected with a plurality of fifth transmission gears 631 through internal meshing teeth. The needle clusters on the surface of the rotating cleaning disk 634 can clean away the residues adhering to the inner wall of the lower mold body 31, and has the characteristic of automatically cleaning the residues.

[0046] See also Fig.11 and Fig.14 In one embodiment of the present invention, the slag collecting assembly 7 includes a slag collecting box 71, an air suction pump 72, an air suction pipe 73 and a fixed pipe 74. The slag collecting box 71 is fixedly connected to the support frame 51. The air suction end of the air suction pump 72 is connected to a plurality of air suction pipes 73. The other end of the air suction pipe 73 is fixedly connected to the fixed pipe 74. The fixed pipe 74 is fixedly connected to the support frame 51. One end of the second rotating tube 632 away from the fifth transmission gear 631 is rotatably connected in the fixed pipe 74. A slag suction port 633 is provided on the side wall of the second rotating tube 632. The exhaust end of the air suction pump 72 is connected to the slag collecting box 71. A sealing cover 511 is fixedly connected to the bottom of the support frame 51. The end surface of the sealing cover 511 away from the support frame 51 is in contact with the upper surface of the lower mold body 31. The sealing effect of the sealing cover 511 can prevent the cleaned residue from splashing to the outside.

[0047] In an embodiment of the present invention, under the vacuum adsorption action of the suction pump 72, the residue cleaned up in the lower mold body 31 can enter the second rotating tube 632 through the residue suction port 633, and the residue enters the residue collecting box 71 along the second rotating tube 632, the fixed tube 74 and the suction pipe 73, thereby realizing the function of automatically collecting the residue and having the characteristics of high work efficiency.

[0048] The working process of the embodiment of the present invention is as follows: Compression molding and material taking link: the number of teeth on the first driving gear is designed to be a plurality of teeth, so that the first driving gear and the first transmission gear 13 are intermittently transmitted. Each rotation of the first driving gear drives the first transmission gear 13, the rotating shell 2 and the lower mold assembly 3 to rotate a certain angle. When the lower mold assembly 3 rotates to the bottom of the upper mold assembly 4, the second telescopic rod 41 drives the upper mold 42 to move toward the direction close to the lower mold body 31, so that the raw material in the lower mold body 31 can be compression molded. After the molding is completed, the second telescopic rod 4 1 drives the upper die 42 to move in the direction away from the lower die body 31, and the driving motor continues to drive the rotating shell 2 and the lower die assembly 3 to rotate to the position where the meshing teeth 15 are located 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 central axis of the rotating sleeve 12, so that the fourth transmission gear 252 can be meshed and 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 is meshed and connected with the second transmission gear 231. The purpose of driving the screw rod 23 to rotate is achieved by connecting the screw rod 23. The rotating screw rod 23 drives the slider 34 to make a linear motion to drive the lower mold body 31 to rotate around the rotating shaft 32. The rotated lower mold body 31 is inclined at a certain angle to the horizontal direction, which is convenient for the staff to take out the internally formed products. 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 the loss of the transmission force, the retaining spring 242 sleeved on the screw rod 23 drives the screw rod 23 to rotate in the opposite direction by elastic deformation. The screw rod 23 rotating in the opposite direction drives the slider 34 to move in the opposite direction to drive the lower mold body 31 to rotate in the opposite direction, so that the lower mold body 31 can be reset. In summary, the entire movement process of the lower mold body 31 is: it is in a horizontal static state during compression molding, and after compression molding, it first rotates toward the outside by a certain angle, and then rotates in the opposite direction by a certain angle to return to the horizontal static state. After adding raw materials into the lower mold body 31, the upper mold assembly 4 can continue to perform compression molding through movement, and so on. Residue cleaning step: After the first telescopic rod 14 drives the rotating shell 2 to rise to a certain height through the support block 141, the limiting rib 211 on the first rotating tube 21 is not out of the limiting groove 121 on the inner wall of the rotating sleeve 12. The rotating rotating sleeve 12 can continue to drive the first rotating tube 21 and the rotating shell 2 to rotate. However, the transmission assembly 25 is completely disengaged from the meshing teeth 15. When the rotating shell 2 continues to rotate, the lower mold body 31 inside will not continue to rotate, that is, it will always remain in a horizontal state. The driving motor 611 can drive the transmission by driving the second driving gear 612 to rotate. The rotating transmission member 62 rotates, and the rotating transmission member 62 drives the plurality of second rotating tubes 632 and the cleaning disk 634 to rotate by means of the meshing connection with the plurality of fifth transmission gears 631 through the internal meshing teeth. The needle clusters on the surface of the rotating cleaning disk 634 can clean up the residue adhering to the inner wall of the lower mold body 31. Under the vacuum adsorption action of the suction pump 72, the residue cleaned up in the lower mold body 31 can enter the second rotating tube 632 through the residue suction port 633, and the residue enters the residue collecting box 71 along the second rotating tube 632, the fixed tube 74 and the suction pipe 73, thereby realizing the function of automatically collecting the residue.

[0049] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flame-retardant PVC plastic preparation device, comprising a bearing frame (1), a rotating shell (2), a lower mold assembly (3) and an upper mold assembly (4), characterized in that: The supporting frame (1) is provided with a first driving part (11), the first driving part (11) comprising a driving motor and a first driving gear; the middle of the supporting frame (1) is also movably connected with a rotating sleeve (12), the rotating sleeve (12) is fixedly sleeved with a first transmission gear (13) meshingly connected with the first driving gear; the middle of the rotating shell (2) is also fixedly connected with a first rotating tube (21), the first rotating tube (21) is movably sleeved in the rotating sleeve (12); a transmission assembly (25) is installed on the side wall of the rotating shell (2); the side wall of the supporting frame (1) is provided with a plurality of meshing teeth (15), the transmission assembly (25) is meshingly connected with the meshing teeth (15); a screw rod (23) is also installed in the rotating shell (2), the screw rod (23) is fixedly sleeved with a first transmission gear (13) meshingly connected with the first driving gear A second transmission gear (231) meshed with the transmission assembly (25) is provided. The lower mold assembly (3) comprises a lower mold body (31), a rotating shaft (32), a connecting rod (33) and a sliding block (34). The lower mold body (31) is provided with a rotating shaft (32) rotatably connected to the side wall of the rotating shell (2). The sliding block (34) is movably sleeved on the screw rod (23). The two ends of the connecting rod (33) are respectively hinged to the lower mold body (31) and the sliding block (34). The upper mold assembly (4) comprises a second telescopic rod (41), an upper mold (42) and a fixed frame (43). The fixed frame (43) is fixedly connected to the bottom of the supporting frame (1). One end of the second telescopic rod (41) is fixedly connected to the fixed frame (43). The other end of the second telescopic rod (41) is provided with an upper mold (42).

2. A flame retardant PVC plastic preparation device according to claim 1, characterized in that: The invention also comprises a lifting component (5), a cleaning component (6) and a slag collecting component (7), wherein the lifting component (5) is provided with a straight rod (52) movably sleeved in the first rotating tube (21); and a support frame (51) mounted on the straight rod (52) and located at the top of the lower mold body (31), wherein the cleaning component (6) and the slag collecting component (7) are both mounted on the support frame (51), wherein the slag collecting component (7) is movably connected to the cleaning component (6), wherein the upper mold (42) and the cleaning component (6) are located directly above the lower mold body (31), and wherein the upper mold (42) and the cleaning component (6) are symmetrically distributed about the axis of the first rotating tube (21).

3. A flame retardant PVC plastic preparation device according to claim 2, characterized in that: The bottom of the rotating sleeve (12) is in contact with the end surface of the bottom of the first rotating tube (21), and the inner wall of the rotating sleeve (12) is provided with a limiting groove (121) extending along the axial direction, and the outer wall of the first rotating tube (21) is connected with a limiting rib (211) plugged into the limiting groove (121). The supporting frame (1) is also fixedly connected with a plurality of first telescopic rods (14), and one end of the first telescopic rods (14) close to the rotating shell (2) is fixedly connected with a support block (141). The bottom of the rotating shell (2) is provided with a second circular guide rail (27), and the support block (141) is slidably connected to the second circular guide rail (27). The plurality of first telescopic rods (14) and the support block (141) are symmetrically distributed about the axis of the first rotating tube (21).

4. A flame retardant PVC plastic preparation device according to claim 3, characterized in that: The transmission assembly (25) comprises a third transmission gear (251), a fourth transmission gear (252) and a rotating rod (253); an opening is provided on a side wall of the rotating housing (2); 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 meshedly connected with the meshing teeth (15); the third transmission gear (251) is meshedly connected with the second transmission gear (231); the third transmission gear (251) and the second transmission gear (231) are designed as helical gears; and the fourth transmission gear (252) is designed as a spur gear.

5. The flame retardant PVC plastic preparation device according to claim 4, characterized in that: The number of the transmission components (25), the lower mold components (3) and the screw rods (23) is several, and the several transmission components (25), the lower mold components (3) and the screw rods (23) are symmetrically distributed about the axis of the first rotating tube (21); a plurality of cavities (22) are arranged in the rotating shell (2); the screw rods (23) are installed in the cavities (22); the bottom of the lower mold body (31) is in contact with the upper surface of the cavity (22); the slider (34) is in contact with the bottom of the cavity (22); The cavity (22) is slidably connected, and an escape hole for escaping the connecting rod (33) is opened above the cavity (22). A reset portion (24) is also arranged in the cavity (22). The reset portion (24) comprises a fixed shell (241) and a retaining spring (242) located 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 retaining spring (242) is sleeved on the screw rod (23).

6. The flame retardant PVC plastic preparation device according to claim 5, characterized in that: The lifting assembly (5) further comprises a support plate (53) and a third telescopic rod (54); the support plate (53) is fixedly connected to one end of the straight rod (52) away from the support frame (51); and the two ends of the third telescopic rod (54) are respectively hinged to the bearing frame (1) and the support plate (53).

7. The flame retardant PVC plastic preparation device according to claim 6, characterized in that: The cleaning assembly (6) comprises a second driving part (61), a transmission member (62) and a cleaning part (63); the second driving part (61) comprises a driving motor (611) fixedly connected to the support frame (51) and a second driving gear (612); the transmission member (62) is designed as a rotating ring rotatably connected to the support frame (51); the outer ring of the rotating ring is provided with external meshing teeth meshing with the second driving gear (612); the cleaning part (63) comprises a fifth transmission gear (631), a second rotating tube (632) and a cleaning disk (634); the second rotating tube (632) is movable Connected to 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 internal meshing teeth meshing with the fifth transmission gear (631), the cleaning disk (634) is fixedly connected to the end of the second rotating tube (632) away from the fifth transmission gear (631), and a plurality of needle clusters are provided on the surface of the cleaning disk (634), and the plurality of needle clusters are in contact with the inner wall of the lower mold body (31), and the number of the cleaning parts (63) is a plurality, and the plurality of cleaning parts (63) are symmetrically distributed about the transmission member (62) axis.

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

9. The flame-retardant PVC plastic preparation device according to claim 8, characterized in that: A plurality of balls (26) are embedded in the bottom of the rotating shell (2), a first circular guide rail (151) is provided above the supporting frame (1), and the plurality of balls (26) are rollingly connected in the first circular guide rail (151).

10. A preparation process of a flame retardant PVC plastic preparation device, characterized in that: The following steps are involved: Each rotation of the first driving gear drives the first transmission gear (13), the rotating housing (2) and the lower mold assembly (3) to rotate by a certain angle. 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 in a direction close to the lower mold body (31), thereby enabling the raw material in the lower mold body (31) to be compression molded.

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