Plastic extruding machine for producing and processing plastic products

Abstract

The invention discloses a plastic extruding machine for producing and processing plastic products, and relates to the technical field of plastic extruding, the plastic extruding machine comprises a plastic extruding mechanism, and further comprises a workpiece continuous mechanism, the workpiece continuous mechanism is mounted at one end of the plastic extruding mechanism and comprises a blocking plate, a plate groove is formed in the blocking plate from top to bottom in a penetrating mode, and a first discharging opening vertically communicated with the plate groove is formed in the blocking plate in a penetrating mode; two material blocking plates are arranged in the plate groove in a sleeved mode, and second discharging ports are formed in the opposite sides of the two material blocking plates. According to the mold switching device, the molds are switched without shutdown in the replacement process of the two molds, the situation that internal materials are overburnt or solidified is avoided, the continuity of the materials is kept in the switching process, disconnection of the materials is avoided, the materials do not need to be guided again during switching, time and labor are saved, the machining efficiency is improved, and the production cost is reduced. And plastic in the mold is cleaned after switching, the interior of a forming hole of the combined mold is kept clean, and the situation that the forming quality is affected by internal impurities in the next use process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion, and in particular to an extruder for the production and processing of plastic products. Background Art

[0002] An extruder is a forming device that generates pressure through the rotation of a screw to achieve plasticization, mixing, and continuous extrusion of plastics.

[0003] The die of the extruder can be replaced according to the shape of the production material. When the plastic produced by the extrusion die reaches the specified length, the die needs to be replaced to produce the next plastic workpiece. Therefore, the die needs to be replaced. In the prior art, the extruder is stopped and then the die is replaced. However, the remaining material in the mixing cylinder will solidify together due to the stop of heating or the material is continuously heated, but continuous heating will cause overburning, which not only affects the performance of the material but also affects the internal mechanical structure. Moreover, the newly extruded material needs to be redirected to other workstations, which is time-consuming and laborious and affects efficiency. Summary of the Invention

[0004] The present invention provides an extruder for the production and processing of plastic products to solve the above deficiencies in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An extruder for the production and processing of plastic products includes an extrusion mechanism, and further includes: A workpiece continuous mechanism installed at one end of the extrusion mechanism, including a sealing plate. The sealing plate is provided with a plate groove penetrating from top to bottom, and the sealing plate is provided with a first discharge port vertically communicating with the plate groove. Two plugging plates are sleeved inside the plate groove, and a second discharge port is provided on the opposite side of the two plugging plates; A non-stop switching mechanism installed on one side of the extrusion mechanism, including a plurality of double-section reciprocating threaded rods. Two moving plates I are threadedly sleeved on the outer part of the double-section reciprocating threaded rods. A combined die is fixedly installed on the two moving plates I in a mirror image manner, and a first guiding rod is sleeved inside the two moving plates I; A driving mechanism installed on one side of the extrusion mechanism and connected to the workpiece continuous mechanism and the non-stop switching mechanism; A cleaning mechanism installed on the outer wall of the extrusion mechanism.

[0006] Further, the extrusion mechanism includes a cabinet body. A heater is fixed on the top of the cabinet body. A mixing cylinder is fixed inside the heater. A motor I is fixed at one end of the mixing cylinder. The output shaft of the motor I is fixed with a spiral feeding rod. The spiral feeding rod is sleeved inside the mixing cylinder. A feeding box is communicated with the top of the mixing cylinder. The other end of the mixing cylinder is fixedly connected to the sealing plate.

[0007] Furthermore, the workpiece continuous mechanism further includes a gasket fixed to the side of the plugging plate away from the mixing cylinder; One side of the plugging plate is rotatably connected to a bidirectional screw. One side of the plugging plate is fixed with a motor bracket. The bidirectional screw is rotatably connected inside the motor bracket. The top of the motor bracket is fixed with a second motor. The output end of the second motor is fixedly connected to the bidirectional screw. Two moving plates are threadedly sleeved on the bidirectional screw, and the two moving plates are respectively fixedly connected to the two material blocking plates.

[0008] Furthermore, the non-stop switching mechanism further includes a reciprocating screw rotatably connected to one side of the cabinet body. One end of the reciprocating screw is externally provided with a first one-way gear. The reciprocating screw is externally threadedly sleeved with a moving frame. A plurality of double-section reciprocating threaded rods are rotatably connected inside the moving frame. A plurality of first guide rods are fixedly connected to the moving frame. The bottom of the moving frame is sleeved with a second guide rod, and one end of the second guide rod is fixed to one side of the cabinet body.

[0009] Furthermore, the non-stop switching mechanism further includes a first rotating shaft rotatably connected to one side of the cabinet body. One end of the first rotating shaft is externally provided with a second one-way gear. The other end of the first rotating shaft is fixed with a first bevel gear. One side of the first bevel gear is engaged with a second bevel gear. The second bevel gear is internally fixed with a second rotating shaft. The bottom end of the second rotating shaft is fixed with a third bevel gear. One end of the double-section reciprocating threaded rod is fixed with a fourth bevel gear. A plurality of the fourth bevel gears are matched with the third bevel gear; The first rotating shaft and the second rotating shaft are rotatably connected with a support member, and the support member is fixed to one side of the cabinet body.

[0010] Furthermore, the driving mechanism includes a third motor fixed to one side of the cabinet body. The output end of the third motor is fixed with a gear. One side of the gear is engaged with the first one-way gear, and the other side is engaged with the second one-way gear.

[0011] Furthermore, the cleaning mechanism includes heat insulation plates fixed to both sides of the mixing cylinder. Cleaning cotton is fixed to the sides of the two heat insulation plates away from each other, and both ends of the cleaning cotton are rounded.

[0012] Furthermore, a controller is fixed to one side of the cabinet body, and the controller is electrically connected to the first motor, the second motor, and the third motor.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: During the process of mold replacement, the present invention realizes mold switching without stopping the machine, avoiding overheating or solidification of the internal material, and maintaining the continuity of the material during the switching process, avoiding material disconnection. When switching, the material does not need to be re-guided, which saves time and effort, improves processing efficiency, and cleans the plastic inside the mold after switching to keep the forming holes of the combined mold clean, avoiding the influence of internal impurities on the forming quality during the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 6 is a schematic structural view of a first perspective of an extruder for plastic product production and processing according to the present invention.

[0015] Figure 2 FIG. 7 is a schematic structural view of a second perspective of an extruder for plastic product production and processing according to the present invention.

[0016] Figure 3 FIG. 8 is a schematic sectional view of an extruder for plastic product production and processing according to the present invention.

[0017] Figure 4 FIG. 9 is a schematic structural view of a cleaning mechanism of an extruder for plastic product production and processing according to the present invention.

[0018] Figure 5 FIG. 10 is a schematic structural view of a non-stop switching mechanism of an extruder for plastic product production and processing according to the present invention.

[0019] Figure 6 FIG. 11 is an exploded schematic structural view of a workpiece continuous mechanism of an extruder for plastic product production and processing according to the present invention.

[0020] Figure 7 is Figure 4 an enlarged structural view of part A inside.

[0021] In the figure: 1. Extrusion mechanism; 11. Cabinet body; 12. Heater; 13. Mixing cylinder; 14. Motor 1; 15. Screw feeding rod; 16. Feeding box; 2. Workpiece continuous mechanism; 21. Plugging plate; 22. Plate groove; 23. Discharge port 1; 24. Blocking plate; 25. Discharge port 2; 26. Moving plate 2; 27. Motor bracket; 28. Motor 2; 29. Bidirectional screw; 210. Sealing gasket; 3. Non-stop switching mechanism; 31. Reciprocating screw; 32. One-way gear 1; 33. Guide rod 2; 34. Moving frame; 35. Double-section reciprocating threaded rod; 36. Bevel gear 4; 37. Moving plate 1; 38. Composite die; 39. Support member; 310. Rotating shaft 1; 311. One-way gear 2; 312. Bevel gear 1; 313. Rotating shaft 2; 314. Bevel gear 2; 315. Guide rod 1; 316. Bevel gear 3; 4. Driving mechanism; 41. Motor 3; 42. Gear; 5. Cleaning mechanism; 51. Heat insulation plate; 52. Cleaning cotton; 53. Rounded corner. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example: Refer to Figures 1 - 7 : An extrusion machine for the production and processing of plastic products, including an extrusion mechanism 1, further comprising: A workpiece continuous mechanism 2, which is installed at one end of the extrusion mechanism 1, includes a sealing plate 21. The sealing plate 21 is provided with a plate groove 22 penetrating from top to bottom. The sealing plate 21 is provided with a first discharge port 23 vertically communicating with the plate groove 22. Two blanking plates 24 are sleeved inside the plate groove 22. A second discharge port 25 is provided on the opposite side of the two blanking plates 24. A non-stop switching mechanism 3, which is installed on one side of the extrusion mechanism 1, includes a plurality of double-section reciprocating threaded rods 35. Two moving plates 37 are sleeved on the outer thread of the double-section reciprocating threaded rod 35. A combined mold 38 is fixedly installed on the two moving plates 37 in a mirror image manner. A first guide rod 315 is sleeved inside the two moving plates 37. A driving mechanism 4, which is installed on one side of the extrusion mechanism 1 and is connected to the workpiece continuous mechanism 2 and the non-stop switching mechanism 3; A cleaning mechanism 5, which is installed on the outer wall of the extrusion mechanism 1.

[0026] The extrusion mechanism 1 includes a cabinet 11. A heater 12 is fixed on the top of the cabinet 11. A mixing cylinder 13 is fixed inside the heater 12. One end of the mixing cylinder 13 is fixed with a first motor 14. The output shaft of the first motor 14 is fixed with a spiral feeding rod 15. The spiral feeding rod 15 is sleeved inside the mixing cylinder 13. The top of the mixing cylinder 13 is communicated with a feeding box 16. The other end of the mixing cylinder 13 is fixedly connected to the sealing plate 21.

[0027] The workpiece continuous mechanism 2 further includes a gasket 210 fixed on the side of the sealing plate 21 away from the mixing cylinder 13; One side of the sealing plate 21 is rotatably connected with a bidirectional screw rod 29. One side of the sealing plate 21 is fixed with a motor bracket 27. The bidirectional screw rod 29 is rotatably connected inside the motor bracket 27. A second motor 28 is fixed on the top of the motor bracket 27. The output end of the second motor 28 is fixedly connected to the bidirectional screw rod 29. Two moving plates 26 are sleeved on the bidirectional screw rod 29. The two moving plates 26 are respectively fixedly connected to the two blanking plates 24.

[0028] The non-stop switching mechanism 3 further includes a reciprocating screw rod 31 rotatably connected to one side of the cabinet 11. A one-way gear 32 is installed on the outer part of one end of the reciprocating screw rod 31. A moving frame 34 is sleeved on the outer thread of the reciprocating screw rod 31. A plurality of double-section reciprocating threaded rods 35 are rotatably connected inside the moving frame 34. A plurality of first guide rods 315 are fixedly connected to the moving frame 34. A second guide rod 33 is sleeved at the bottom of the moving frame 34. One end of the second guide rod 33 is fixed on one side of the cabinet 11.

[0029] The non-stop switching mechanism 3 further includes a first rotating shaft 310 rotatably connected to one side of the cabinet body 11. A second one-way gear 311 is installed outside one end of the first rotating shaft 310. A first bevel gear 312 is fixed to the other end of the first rotating shaft 310. A second bevel gear 314 is engaged with one side of the first bevel gear 312. A second rotating shaft 313 is fixed inside the second bevel gear 314. A third bevel gear 316 is fixed to the bottom end of the second rotating shaft 313. A fourth bevel gear 36 is fixed to one end of the double-section reciprocating threaded rod 35. A plurality of fourth bevel gears 36 cooperate with the third bevel gear 316; The first rotating shaft 310 and the second rotating shaft 313 are rotatably connected with a support member 39 outside. The support member 39 is fixed to one side of the cabinet body 11.

[0030] The driving mechanism 4 includes a third motor 41 fixed to one side of the cabinet body 11. A gear 42 is fixed to the output end of the third motor 41. One side of the gear 42 is engaged with the first one-way gear 32, and the other side is engaged with the second one-way gear 311.

[0031] The cleaning mechanism 5 includes heat insulation plates 51 fixed to both sides of the mixing cylinder 13. Cleaning cotton 52 is fixed to the outer sides of the two heat insulation plates 51 away from each other. Both ends of the cleaning cotton 52 are provided with rounded corners 53.

[0032] A controller is fixed to one side of the cabinet body 11. The controller is electrically connected to the first motor 14, the second motor 28, and the third motor 41.

[0033] Working principle: The first motor 14 drives the spiral feeding rod 15 to rotate, pushing the material in the feeding box 16 to one side. After passing through the heater 12, the material is melted. The melted material accumulates at one end of the mixing cylinder 13, and then passes through the first discharge port 23 and the combined mold 38 docked with the first discharge port 23. The formed material passing through the combined mold 38 contacts the outside air and cools. Workers will pull one end of the formed material through other cooling stations to achieve solidification; When the plastic produced by using this extrusion mold reaches the specified length, in the prior art, the extruder is shut down, and then the mold is replaced. However, the remaining material inside the mixing cylinder will solidify together due to the stop of heating, or the material is continuously heated, but continuous heating will cause overheating, which not only affects the performance of the material but also affects the internal mechanical structure. Moreover, the newly extruded material needs to be redirected to other stations, which is time-consuming and laborious and affects the efficiency; Therefore, when the mold needs to be replaced, the controller controls the second motor 28 to drive the bidirectional screw rod 29 to rotate forward, so that the second moving plate 26 drives the two blanking plates 24 to narrow the first discharge port 23. The material passes through the second discharge port 25 and then through the combined mold 38 to be formed. Then, the third motor 41 is started to drive the gear 42 to rotate in reverse. The reverse rotation of the gear 42 satisfies the rotation direction for the second one-way gear 311 to drive the first rotating shaft 310. The rotation of the first rotating shaft 310 causes the first bevel gear 312, the second bevel gear 314, the second rotating shaft 313, the third bevel gear 316, and the fourth bevel gear 36 to rotate. The rotation of the fourth bevel gear 36 drives the double-section reciprocating threaded rod 35 installed inside to rotate, causing the two first moving plates 37 to move away from each other and driving the combined mold 38 to separate. The combined mold 38 moves away from the formed material. The two blanking plates 24 temporarily replace the mold to enable the material to pass through the second discharge port 25 for continuous forming. The purpose of temporarily replacing the mold is to keep the material formed by the previous combined mold 38 and the material formed by the second discharge port 25 in a continuous state without the need to re-guide the material. Then, the third motor 41 is controlled to drive the gear 42 to rotate forward. The forward rotation of the gear 42 causes the first one-way gear 32 to satisfy the rotation direction for driving the reciprocating screw rod 31. The rotation of the reciprocating screw rod 31 causes the moving frame 34 to move. The movement of the moving frame 34 drives multiple groups of combined molds 38 to move. The combined mold 38 to be installed is moved close to the sealing plate 21. After stopping, the fourth bevel gear 36 on one side of the combined mold 38 meshes with the third bevel gear 316. The third motor 41 is started to drive the gear 42 to rotate in reverse, causing the fourth bevel gear 36 to drive the double-section reciprocating threaded rod 35 to rotate, so that the two first moving plates 37 drive the combined mold 38 to move closer and combine together. When moving closer, one side contacts the gasket 210 to prevent material leakage. When combined together, the formed material in the middle is sleeved inside. Then, the first motor 14 is controlled to drive the bidirectional screw rod 29 to rotate in reverse, causing the two blanking plates 24 to move away and opening the first discharge port 23 to complete the replacement. During the replacement of the two combined molds 38, the continuity of the material is maintained, the mold is switched without stopping the machine, avoiding the situation of overheating or solidification of the internal material, without the need for re-guidance, saving time and effort, and improving the processing efficiency; When the used combined mold 38 is removed, it will be sleeved outside from the rounded corner 53 of the cleaning cotton 52, so that the cleaning cotton 52 fills the discharge port of the combined mold 38. The plastic inside is cleaned by moving to keep the inside of the combined mold 38 clean and avoiding the influence of internal impurities on the forming quality during the next use.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An extruder for producing and processing plastic products, comprising an extrusion mechanism (1), characterized in that: Also includes: A workpiece continuous mechanism (2) is installed at one end of the extrusion mechanism (1), comprising a blocking plate (21), wherein the blocking plate (21) is provided with a plate groove (22) extending from top to bottom, wherein the blocking plate (21) is provided with a first discharge port (23) extending from top to bottom and vertically communicating with the plate groove (22), wherein two blocking plates (24) are sleeved inside the plate groove (22), and a second discharge port (25) is provided on opposite sides of the two blocking plates (24); A non-stop switching mechanism (3) is installed on one side of the extrusion mechanism (1), comprising a plurality of double-section reciprocating threaded rods (35), wherein the external threads of the double-section reciprocating threaded rods (35) are provided with two movable plates (37), a combined mold (38) is fixed on the two movable plates (37) in a mirror-like manner, and a guide rod (315) is provided inside the two movable plates (37); A driving mechanism (4) is installed on one side of the extrusion mechanism (1) and is connected to the workpiece continuous mechanism (2) and the non-stop switching mechanism (3); A cleaning mechanism (5) is installed on the outer wall of the extrusion mechanism (1).

2. The extruder for producing and processing plastic products according to claim 1, characterized in that: The extrusion mechanism (1) comprises a cabinet (11), a heater (12) is fixed on the top of the cabinet (11), a mixing barrel (13) is fixed inside the heater (12), a motor (14) is fixed on one end of the mixing barrel (13), a screw feeding rod (15) is fixed on the output shaft of the motor (14), the screw feeding rod (15) is sleeved inside the mixing barrel (13), the top of the mixing barrel (13) is connected to a feeding box (16), and the other end of the mixing barrel (13) is fixedly connected to a sealing plate (21).

3. The extruder for producing and processing plastic products according to claim 2, characterized in that: The workpiece continuous mechanism (2) further comprises a sealing gasket (210) fixed to a side of the sealing plate (21) away from the mixing cylinder (13); A bidirectional screw rod (29) is rotatably connected to one side of the blocking plate (21); a motor frame (27) is fixed to one side of the blocking plate (21); the bidirectional screw rod (29) is rotatably connected to the inside of the motor frame (27); a second motor (28) is fixed to the top of the motor frame (27); an output end of the second motor (28) is fixedly connected to the bidirectional screw rod (29); two second moving plates (26) are threadedly sleeved on the bidirectional screw rod (29); and the two second moving plates (26) are respectively fixedly connected to the two blocking plates (24).

4. The extruder for producing and processing plastic products according to claim 3, characterized in that: The non-stop switching mechanism (3) further comprises a reciprocating screw (31) rotatably connected to one side of the cabinet (11); a one-way gear 1 (32) is externally mounted on one end of the reciprocating screw (31); an external thread of the reciprocating screw (31) is sleeved on a movable frame (34); a plurality of the double-section reciprocating threaded rods (35) are rotatably connected to the interior of the movable frame (34); a plurality of the guide rods 1 (315) are fixedly connected to the movable frame (34); a guide rod 2 (33) is sleeved on the bottom of the movable frame (34); and one end of the guide rod 2 (33) is fixed to one side of the cabinet (11).

5. The extruder for producing and processing plastic products according to claim 4, characterized in that: The non-stop switching mechanism (3) also includes a rotating shaft 1 (310) rotatably connected to one side of the cabinet (11), a one-way gear 2 (311) is externally mounted on one end of the rotating shaft 1 (310), a bevel gear 1 (312) is fixed to the other end of the rotating shaft 1 (310), a bevel gear 2 (314) is meshed with one side of the bevel gear 1 (312), a rotating shaft 2 (313) is fixed inside the bevel gear 2 (314), a bevel gear 3 (316) is fixed to the bottom end of the rotating shaft 2 (313), a bevel gear 4 (36) is fixed to one end of the double-section reciprocating threaded rod (35), and a plurality of bevel gears 4 (36) are matched with bevel gear 3 (316); The outer parts of the rotating shaft 1 (310) and the rotating shaft 2 (313) are rotatably connected to a support member (39), and the support member (39) is fixed on one side of the cabinet (11).

6. The extruder for producing and processing plastic products according to claim 5, characterized in that: The driving mechanism (4) comprises a motor three (41) fixed to one side of the cabinet (11); a gear (42) is fixed to the output end of the motor three (41); one side of the gear (42) is meshed with a one-way gear one (32); and the other side of the gear (42) is meshed with a one-way gear two (311).

7. The extruder for producing and processing plastic products according to claim 6, characterized in that: The cleaning mechanism (5) comprises a heat-insulating plate (51) fixed on both sides of the mixing barrel (13), cleaning cotton (52) being fixed on the two heat-insulating plates (51) on the sides away from each other, and both ends of the cleaning cotton (52) are arranged as rounded corners (53).

8. The extruder for producing and processing plastic products according to claim 7, characterized in that: A controller is fixed on one side of the cabinet (11), and the controller is electrically connected to motor 1 (14), motor 2 (28) and motor 3 (41).

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