Vertical injection molding machine and injection molding method for sliding plate accessory machining

Abstract

The invention relates to the technical field of injection molding equipment, and discloses a vertical injection molding machine and an injection molding method for sliding plate accessory machining, the vertical injection molding machine comprises an equipment main body, the equipment main body is provided with an injection molding unit, a scrap collecting unit and a positioning unit, the injection molding unit comprises an upper injection mold, and the positioning unit comprises an upper fixing ring; a plurality of storage grooves are formed in the surface of the inner wall of the upper fixing ring; the multiple sets of cleaning mechanisms are arranged in the upper fixing ring, after the injection molding part is cooled, the lower injection molding mold ejects the injection molding part out, burrs on the outer side of the injection molding part can make contact with the burr scrapers in the cleaning mechanisms, the burr scrapers downwards scrape the burrs on the outer side of the injection molding part, the burrs on the outer side of the injection molding part are cleaned up, and the machining efficiency is improved. Workers do not need to perform secondary cleaning again, so that the labor intensity of the workers is reduced, and the use comfort of the workers is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to a vertical injection molding machine and an injection molding method for processing skateboard accessories. Background Art

[0002] A vertical injection molding machine is a plastic injection molding equipment. It is mainly used to melt thermoplastics or thermosetting plastics by heating, and then inject them into a closed mold under high pressure. After cooling and solidification, plastic products of the required shape and size are formed. In the production process of skateboard accessories, skateboard wheels, bracket bushings and other plastic accessories are usually produced by injection molding machines for production efficiency. However, after the injection molding is completed, there will be a certain gap between the upper mold and the lower mold, resulting in plastic burrs on the outside of the skateboard wheels produced by injection molding. The staff needs to perform secondary grinding and cleaning before installing them on the skateboard, which increases the staff's work process and labor intensity. Among them, Chinese patent application CN116766536A proposes an ejection structure of a vertical hot-pressing injection molding machine, including an injection molding machine base shell, a push plate lifting device with an execution end extending to the upper part of the injection molding machine base shell at the bottom of the inner wall of the injection molding machine base shell, a plastic part translation unloading device is provided on one side of the top of the injection molding machine base shell, and a lifting and scraping device is provided on the side of the injection molding machine base shell away from the plastic part translation unloading device. The push plate lifting device includes a driving cylinder vertically arranged at the bottom of the inner wall of the injection molding machine base shell, an outer sleeve arranged at the execution end of the driving cylinder, a square block slidably connected to the inner wall of the outer sleeve, a lifting tube with a bottom end connected to the upper surface of the square block and a top end penetrating the injection molding machine base shell, and an elastic buffer component arranged at the top of the lifting tube. This patent is to clean and polish the edges of the injection molded product after the injection molding is lifted up and then moved to the collection frame. However, this patent is only applicable to rectangular injection molding products, and cannot be polished for some arc-shaped or circular injection molding products. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a vertical injection molding machine and an injection molding method for processing skateboard accessories, which have the advantages of automatically cleaning burrs on the edges of plastic parts and cleaning residues inside the mold, thereby solving the problems of vertical injection molding machines.

[0004] In order to solve the technical problems of the above-mentioned vertical injection molding machine, the present invention provides the following technical solutions: a vertical injection molding machine, comprising an equipment body, on which an injection molding unit, a waste chip collection unit and a positioning unit are arranged, the injection molding unit comprises an upper injection mold, the positioning unit comprises an upper fixing ring, the inner wall surface of the upper fixing ring is provided with a plurality of receiving grooves, each of the receiving grooves is provided with a cleaning mechanism, the cleaning mechanism comprises a semicircular rotating plate, the semicircular rotating plate is rotationally matched with the inner wall of the receiving groove and a torsion spring is arranged at the rotationally matched position, a burr scraper is arranged on the outer side of the semicircular rotating plate, an ejection unit is arranged below the fixing ring, and the ejection unit comprises a lower injection mold; During the mold closing process, the upper injection mold descends and contacts the top of the semicircular rotating plate extending from the receiving groove, so that the semicircular rotating plate is squeezed and rotated into the receiving groove; During the mold opening process, the semicircular rotating plate rotates and resets under the action of the torsion spring, so that the inner wall of the upper fixed ring is covered with burr scrapers that can cover the complete cross-sectional shape of the upper injection mold; when the lower injection mold ejects the injection molded part, the burr scraper contacts the outer surface of the injection molded part to scrape off burrs; an outer guide ring is provided at the bottom of the upper fixed ring, and the scraped burr waste can enter the waste collection unit through the outer guide ring for collection.

[0005] Preferably, the equipment body includes a top plate, the injection molding unit includes a material picking turntable arranged on the top of the top plate, a positioning column is provided on the top of the material picking turntable, a lifting drive mechanism and an injection molding component are provided on the top of the positioning column, the output end of the lifting drive mechanism is fixedly connected to an injection molding plate, and an upper injection mold is provided at the bottom of the injection molding plate.

[0006] Preferably, a rotating column is coaxially fixedly connected to the surface of the semicircular rotating plate, and the rotating column is rotatably installed on the inner wall of the storage groove. Torsion clamps are fixedly connected to the outer sides of both ends of the rotating column, and the torsion springs are respectively mounted on the outer sides of both ends of the rotating column, and the two ends of the torsion spring are respectively fixedly connected to the torsion clamps and the inner wall of the storage groove.

[0007] Preferably, the ejection unit further comprises an ejection hydraulic column, the lower injection mold is fixedly mounted on the top of the ejection hydraulic column, a cleaning spring column is provided on the outer side of the ejection hydraulic column, and a residue scraper is provided at one end of the cleaning spring column.

[0008] Preferably, the waste collection unit includes a mold plate arranged on the material taking turntable, a guide inclined plate is provided at the bottom of the mold plate, a guide frame is provided on one side of the guide inclined plate, a collection ring is provided at one end of the guide frame, and a collection tube is provided at one end of the collection ring.

[0009] Preferably, the positioning unit further comprises an inner injection molding ring, the upper fixing ring, the outer guide ring and the inner injection molding ring are fixedly connected inside the mold plate in sequence from top to bottom, and the inner diameter of the inner injection molding ring is smaller than the inner diameter of the upper fixing ring.

[0010] Preferably, the opening of the outer guide ring is inclined so that the scraped burrs and waste chips can fall into the opening of the outer guide ring and slide along the inclined opening onto the guide ramp.

[0011] Preferably, a base is provided at the bottom of the top plate, a service chassis is provided on one side of the base, a protective frame is provided on the top of the base and is located around the top plate, and a control panel is provided on the outside of the protective frame.

[0012] The invention also discloses an injection molding method for processing skateboard accessories, which uses the vertical injection molding machine mentioned above.

[0013] Compared with the prior art, the present invention provides a vertical injection molding machine and an injection molding method for processing skateboard accessories, which have the following beneficial effects: 1. A vertical injection molding machine and an injection molding method for processing skateboard accessories are provided with multiple cleaning mechanisms inside an upper fixed ring. After the plastic part is cooled, the lower injection mold ejects the plastic part, and the burrs on the outer side of the injection molded part contact with the burr scraper on the outer side of the semicircular rotating plate, so that the burr scraper scrapes the burrs on the outer side of the injection molded part downward, thereby cleaning and polishing the surroundings of the injection molded part, and cleaning the burrs on the outer side of the injection molded part. There is no need for the staff to perform secondary cleaning again, which reduces the labor intensity of the staff and improves the comfort of the staff.

[0014] 2. A vertical injection molding machine and an injection molding method for processing skateboard accessories are provided with a residue scraper on the outer side of the ejection hydraulic column. When the lower injection mold ejects the plastic part, the residue scraper scrapes and cleans the plastic part residue or debris remaining in the inner injection molding ring, thereby preventing the plastic part residue or debris remaining in the inner injection molding ring from affecting the next injection molding production, causing the plastic part of the next injection molding production to be defective, thereby improving the yield of plastic part production and reducing the production cost of plastic parts.

[0015] 3. A vertical injection molding machine and an injection molding method for processing skateboard accessories discharge scraped burrs through an outer guide ring, so that when a burr scraper cleans burrs on an injection molded part, the scraped burrs can fall into the opening of the outer guide ring, so that plastic burrs and debris can fall outward along the opening on the outside of the outer guide ring to the top inclined surface of the guide inclined plate, and then the plastic burrs or debris automatically move to one end of the guide frame under the action of gravity and fall into the collecting ring, and finally fall out from the collecting pipe to be collected and reused, thereby reducing the production cost of the injection molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the structure of the waste collection unit of the present invention; Figure 4 It is a schematic diagram of the structure of the positioning unit of the present invention; Figure 5 It is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 6 It is a schematic diagram of the structure of the ejection unit of the present invention; Figure 7 A cross-sectional view of the structure of the waste collection unit of the present invention; Figure 8 It is a schematic diagram of the upper mold structure of the present invention.

[0017] In the figure: 1. Equipment body; 11. Base; 12. Service chassis; 13. Control panel; 14. Top plate; 15. Protective frame; 2. Injection unit; 21. Material pick-up turntable; 22. Positioning column; 23. Lifting drive mechanism; 24. Injection assembly; 25. Injection plate; 26. Upper injection mold; 3. Waste collection unit; 31. Mold plate; 32. Guide ramp; 33. Guide frame; 34. Collection ring; 35. Collection tube; 4. Positioning unit; 41. Upper fixing ring; 42. Outer guide ring; 43. Inner injection ring; 5. Cleaning mechanism; 51. Rotating column; 52. Torsion clamp; 53. Torsion spring; 54. Semicircular rotating plate; 55. Burr scraper; 6. Ejection unit; 61. Ejection hydraulic column; 63. Cleaning spring column; 64. Residue scraper; 65. Lower injection mold. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 8A vertical injection molding machine comprises an equipment body 1, on which an injection molding unit 2, a waste collecting unit 3 and a positioning unit 4 are arranged, the injection molding unit 2 comprises an upper injection mold 26, the positioning unit 4 comprises an upper fixing ring 41, a plurality of receiving grooves are provided on the inner wall surface of the upper fixing ring 41, and a cleaning mechanism 5 is provided in each of the receiving grooves, the cleaning mechanism 5 comprises a semicircular rotating plate 54, the semicircular rotating plate 54 is rotatably matched with the inner wall of the receiving groove and a torsion spring 53 is provided at the rotationally matched position, a burr scraper 55 is provided on the outer side of the semicircular rotating plate 54, an ejection unit 6 is provided below the upper fixing ring 41, and the ejection unit 6 comprises a lower injection mold 65; During the mold closing process, the upper injection mold 26 descends and contacts the top of the semicircular rotating plate 54 extending from the receiving groove, so that the semicircular rotating plate 54 is squeezed and rotated into the receiving groove; During the mold opening process, the semicircular rotating plate 54 rotates and resets under the action of the torsion spring 53, so that the inner wall of the upper fixed ring 41 is covered with a burr scraper 55 that can cover the complete cross-sectional shape of the upper injection mold 26; when the lower injection mold 65 ejects the injection molded part, the burr scraper 55 contacts the outer surface of the injection molded part to scrape off burrs; an outer guide ring 42 is provided at the bottom of the upper fixed ring 41, and the scraped burrs and waste chips can enter the waste collection unit 3 through the outer guide ring 42 for collection.

[0020] Furthermore, the equipment body 1 includes a top plate 14, and the injection molding unit 2 includes a material picking turntable 21 arranged on the top of the top plate 14, a positioning column 22 is provided on the top of the material picking turntable 21, a lifting drive mechanism 23 and an injection molding component 24 are provided on the top of the positioning column 22, and an injection molding plate 25 is fixedly connected to the output end of the lifting drive mechanism 23, and an upper injection mold 26 is provided at the bottom of the injection molding plate 25; wherein, the material picking turntable 21 is rotatably installed on the upper surface of the top plate 14, and there are three groups of positioning columns 22 and they are all fixedly connected to the top plate 14, one group of positioning columns 22 is coaxially arranged with the top plate 14 and rotates through the material picking turntable 21, and the lifting drive mechanism 23 and the injection molding component 24 are supported by the three groups of positioning columns 22.

[0021] Furthermore, a rotating column 51 is coaxially fixedly connected to the surface of the semicircular rotating plate 54, and the rotating column 51 is rotatably installed on the inner wall of the storage groove. Torsion clamps 52 are fixedly connected to the outer sides of both ends of the rotating column 51, and torsion springs 53 are respectively mounted on the outer sides of both ends of the rotating column 51. The two ends of the torsion spring 53 are respectively fixedly connected to the torsion clamps 52 and the inner wall of the storage groove.

[0022] In the process of the lifting drive mechanism 23 driving the upper injection mold 26 to move downward for mold closing, the upper injection mold 26 will continue to squeeze the semicircular rotating plate 54 around the rotating column 51 in the upper fixed ring 41 and rotate downward, and then the rotating column 51 drives the torsion clamping plates 52 on the outer sides of the rotating column 51 to squeeze the torsion spring 53 on the outer side of the rotating column 51, and the other end of the torsion spring 53 is fixed inside the upper fixed ring 41, so that the torsion spring 53 will generate a reaction force on the torsion clamping plate 52 until the semicircular rotating plate 54 is completely squeezed into the receiving groove, and the upper injection mold 26 is The upper injection mold 26 is lowered to close with the lower injection mold 65 inside the inner injection ring 43 to achieve mold closing, and then the injection assembly 24 is injected into the upper injection mold 26. After the injection is completed, the cooling water pipes inside the upper injection mold 26 and the lower injection mold 65 are used to water-cool them so that the plastic between the two is solidified and formed. Then the lifting drive mechanism 23 is controlled to move the injection plate 25 and the upper injection mold 26 at the bottom thereof upward, so that the upper injection mold 26 is separated from the lower injection mold 65. After the upper injection mold 26 is moved out of the upper solid mold, the upper injection mold 26 is moved out of the upper solid mold 65. When the upper fixed ring 41 is in the inner wall, the torsion spring 53 in the upper fixed ring 41 will cause the rotating column 51 to drive the semicircular rotating plate 54 to rotate toward the inner wall of the upper fixed ring 41 due to the reaction force, so that the burr scraper 55 on the outer side of the semicircular rotating plate 54 faces the center of the upper fixed ring 41, that is, the semicircular rotating plate 54 drives the burr scraper 55 to rotate and reset to the outside of the receiving groove, so that the inner wall of the upper fixed ring 41 is covered with the burr scraper 55 that can cover the complete cross-sectional shape of the upper injection mold 26. After cooling, there will be some protruding burrs on the edges of the plastic parts. When the lower injection mold 65 ejects the plastic part, the burrs on the outer side of the injection part will contact the burr scraper 55 on the outer side of the semicircular rotating plate 54, so that the burr scraper 55 scrapes the burrs on the outer side of the plastic part downward, thereby cleaning and polishing the surroundings of the plastic part, and cleaning the burrs on the outer side of the plastic part, and then the staff does not need to perform secondary cleaning again, which reduces the labor intensity of the staff and improves the comfort of the staff. The burrs scraped by the burr scraper 55 can fall into the opening of the outer guide ring 42 so as to be collected and processed by the waste collection unit 3; It should be noted that the injection molding assembly 24 is the injection system of the vertical injection molding machine, which is responsible for injecting the molten plastic into the mold. It usually includes a hopper, a screw, a heater and a nozzle, etc. The screw rotates to heat and compress the plastic particles to a high pressure state, and then injects the molten plastic into the mold through the nozzle.

[0023] Furthermore, the ejection unit 6 also includes an ejection hydraulic column 61, and the lower injection mold 65 is fixedly installed on the top of the ejection hydraulic column 61. A cleaning spring column 63 is provided on the outer side of the ejection hydraulic column 61, and a residue scraper 64 is provided at one end of the cleaning spring column 63; the residue scraper 64 is squeezed outward by the cleaning spring column 63, and the outer side of the residue scraper 64 is fitted with the inner wall of the positioning unit 4, and the cleaning spring column 63 squeezes the residue scraper 64 outward, and the outer side of the residue scraper 64 is fitted with the inner wall of the inner injection ring 43. In the process of the lower injection mold 65 ejecting its top injection molded part, the lower injection mold 65 will drive the residue scraper 64 at its bottom to move upward, and the cleaning spring column 63 on the outer side of the ejection hydraulic column 61 will squeeze the residue scraper 64 to move outward, thereby During the upward movement of the knife 64, the residue scraper 64 scrapes and cleans the plastic part residues or debris remaining in the inner injection molding ring 43, preventing the plastic part residues or debris remaining in the inner injection molding ring 43 from affecting the next injection molding production, resulting in incomplete plastic parts in the next injection molding production, thereby improving the yield rate of plastic part production and reducing the production cost of plastic parts; when the ejection hydraulic column 61 drives the lower injection mold 65 to rise to the same height as the top of the upper fixed ring 41, the injection molded part is located on the upper surface of the material taking turntable 21, which is convenient for collecting the injection molded part. At this time, the blade of the residue scraper 64 is located at the opening of the outer guide ring 42, so that the debris scraped off the upper surface of the residue scraper 64 can enter the opening of the outer guide ring 42 so as to be collected and processed together by the waste collection unit 3.

[0024] Furthermore, the waste chip collecting unit 3 comprises a mold plate 31 arranged on the material taking turntable 21, a guide inclined plate 32 is arranged at the bottom of the mold plate 31, a guide frame 33 is arranged at one side of the guide inclined plate 32, a collecting ring 34 is arranged at one end of the guide frame 33, a collecting tube 35 is arranged at one end of the collecting ring 34, and the top of the guide inclined plate 32 is inclined, so that the plastic burrs or debris falling from the outer opening of the outer guide ring 42 automatically move to one end of the collecting ring 34 under the action of gravity, so as to be collected for secondary utilization, thereby reducing the production cost of the injection molded product; specifically, a dust suction mechanism can be selected to be arranged in the opening of the guide frame 33 and the outer guide ring 42 according to actual conditions, and the burrs and waste chips are assisted to be discharged under the suction of the dust suction mechanism, thereby improving the collection effect; There are multiple groups of positioning units 4 distributed on the mold plate 31, and there are also multiple groups of upper injection molds 26 distributed on the injection plate 25, so that the lifting drive mechanism 23 drives the injection plate 25 to descend once to achieve the mold closing of multiple groups of molds, and a hydraulic drive mechanism is arranged inside the material taking turntable 21, and the hydraulic drive mechanism drives multiple ejection hydraulic columns 61 to rise and fall synchronously, so that the hydraulic drive mechanism can drive multiple injection molded parts to be ejected synchronously by performing an upward drive.

[0025] Furthermore, the positioning unit 4 also includes an inner injection molding ring 43, and the upper fixing ring 41, the outer guide ring 42 and the inner injection molding ring 43 are fixedly connected to the inside of the mold plate 31 from top to bottom in sequence, and the inner diameter of the inner injection molding ring 43 is smaller than the inner diameter of the upper fixing ring 41; wherein, the openings on the outer guide ring 42 are distributed in a circle, and the number is preferably three, so that the central angle corresponding to each opening is close to 120°, so that longer burrs can also enter the opening, so that the burrs of different sizes that have been cleaned can all fall to the top of the guide inclined plate 32 through the outer guide ring 42, and then fall into the collecting ring 34 and be collected, thereby preventing the burrs from accumulating inside the upper fixing ring 41 and clogging the equipment inside it, thereby increasing the safety and stability of the equipment inside the upper fixing ring 41, and at the same time, the inner injection molding ring 43 closes the upper injection mold 26 and the lower injection mold 65 inside it, so that the three form a closed space, which is convenient for the injection molding assembly 24 to be injection molded into the three. Among them, there are multiple groups of receiving grooves arranged along the axial direction of the upper fixing ring 41, and each group of receiving grooves is distributed in a circle on the inner wall of the upper fixing ring 41. When the burr scrapers 55 in each receiving groove are extended, the contour formed by the blades of all the burr scrapers 55 is consistent with the cross-sectional shape of the upper injection mold 26; since the outer contours of the upper injection mold 26, the lower injection mold 65 and the inner injection ring 43 are consistent, the blade of each burr scraper 55 is set to be consistent with the outer contour of the upper injection mold 26, so that the burr scraper 55 can completely scrape the side surface of the injection molded part when it is extended from the receiving groove under the action of the torsion spring 53.

[0026] Furthermore, the opening of the outer guide ring 42 is inclined, so that the scraped burrs and waste chips can fall into the opening of the outer guide ring 42 and slide along the inclined opening to the guide inclined plate 32, thereby facilitating the staff to collect the scraped burrs and waste chips, thereby increasing the comfort of the staff.

[0027] Furthermore, a base 11 is provided at the bottom of the top plate 14, a service box 12 is provided on one side of the base 11, a protective frame 15 is provided on the top of the base 11 and is located around the top plate 14, and a control panel 13 is provided on the outside of the protective frame 15. The rotation speed and time of the material pick-up turntable 21, the melting temperature in the injection molding component 24, the number and time of injections in the upward injection mold 26, the maximum distance that the lifting drive mechanism 23 pushes the upper injection mold 26 to move downward, and the maximum distance that the ejection hydraulic column 61 lifts the lower injection mold 65 upward are set through the control panel 13. The surrounding areas of the material pick-up turntable 21 are protected by the protective frame 15 to prevent plastic from splashing onto the staff, thereby increasing the safety and comfort of the staff.

[0028] Working principle: When in use, the staff first adds suitable plastic material into the injection molding component 24 through the pipe on the injection molding component 24, and heats and melts the injection molding component 24, and then the lifting drive mechanism 23 drives the injection molding plate 25 at one end of the bottom to move downward until the upper injection mold 26 at the bottom of the injection molding plate 25 is inserted into the positioning unit 4 inside the waste collection unit 3. During the insertion process, the outer edge of the upper injection mold 26 will collide and squeeze with one end of the semicircular rotating plate 54, so that during the downward movement of the upper injection mold 26, the upper injection mold 26 will continue to squeeze the semicircular rotating plate 54 around the rotating column 51 in the upper fixing ring 41 and rotate downward, and then the rotating column 51 drives the torsion clamps 52 on the outside of its two ends to squeeze the torsion springs 53 on the outside of the rotating column 51, and the torsion springs The other end of 53 is fixed inside the upper fixing ring 41, so that the torsion spring 53 will generate a reaction force on the torsion clamping plate 52, and then the upper injection mold 26 continues to move downward until the upper injection mold 26 and the top of the lower injection mold 65 are in contact and molded. At this time, the top of the connection between the lower injection mold 65 and the upper injection mold 26 is just located in the middle of the inner injection ring 43, and the lower injection mold 65 and the upper injection mold 26 are tightly fitted together, thereby reducing the gap between the two. Then the staff controls the injection molding assembly 24 through the control panel 13 to perform injection molding between the upper injection mold 26 and the lower injection mold 65. After the injection molding is completed, the cooling water pipes inside the upper injection mold 26 and the lower injection mold 65 will water-cool them to solidify the plastic between the two. After the injection molded part is cooled and formed, the staff controls the lifting drive mechanism 23 through the control panel 13 to move the injection plate 25 and the upper injection mold 26 at the bottom thereof upward, thereby separating the upper injection mold 26 from the lower injection mold 65. When the upper injection mold 26 is moved out of the upper fixing ring 41, the torsion spring 53 inside the upper fixing ring 41 will cause the rotating column 51 to drive the semicircular rotating plate 54 to rotate inside the upper fixing ring 41 due to the reaction force, thereby causing the burr scraper 55 on the outer side of the semicircular rotating plate 54 to face the center of the upper fixing ring 41, and the burr scraper 55 is adapted to the size of the lower injection mold 65. Then the motor inside the base 11 controls the top plate 1 The material taking turntable 21 at the top rotates until the material taking turntable 21 rotates 180°, and the ejection hydraulic column 61 is controlled to eject upward. At this time, the lower injection mold 65 ejects the plastic part at its top upward. When the lower injection mold 65 ejects the plastic part, the burr on the outer side of the injection molded part will contact the burr scraper 55 on the outer side of the semicircular rotating plate 54, so that the burr scraper 55 scrapes the burr on the outer side of the injection molded part downward, so that the multiple cleaning mechanisms 5 clean and polish the surroundings of the plastic part when the lower injection mold 65 ejects the plastic part, and clean the burr on the outer side of the plastic part, so that the staff does not need to perform secondary cleaning again, which reduces the labor intensity of the staff and improves the comfort of the staff; In the process of the lower injection mold 65 ejecting the top plastic part, the lower injection mold 65 will drive the residue scraper 64 at its bottom to move upward, and the cleaning spring column 63 outside the ejection hydraulic column 61 will squeeze the residue scraper 64 to move outward, and then in the process of the residue scraper 64 moving upward, the residue scraper 64 scrapes and cleans the plastic residue or debris remaining in the inner injection ring 43, and the residue scraper 64 ejects the plastic debris generated by its cleaning upward until the ejection hydraulic column 61 moves upward to a set distance, at which time the lower injection mold 65 just ejects the top plastic part from the inside of the upper fixing ring 41, and the residue scraper 64 is just located at the opening of the outer guide ring 42, thereby preventing the plastic residue or debris remaining in the inner injection ring 43 from affecting the next injection molding production, resulting in defective plastic parts produced in the next injection molding production, thereby improving the yield rate of plastic parts production and reducing the production cost of plastic parts; During the cleaning process of the burr scraper 55 and the residue scraper 64, the plastic burrs and debris generated by the cleaning will fall downward along the outer side of the lower injection mold 65 to the inner side of the outer guide ring 42, and the top outer side of the inner injection ring 43 is inclined. At this time, the plastic burrs and debris will fall along the outer side of the inner injection ring 43 to the opening of the outer guide ring 42, and then the plastic burrs and debris will fall outward along the opening of the outer side of the outer guide ring 42 to the top inclined surface of the guide inclined plate 32, and then the plastic burrs or debris will automatically move to one end of the guide frame 33 under the action of gravity and fall into the collecting ring 34, and finally fall out from the collecting tube 35 to be collected and reused for a second time. This reduces the production cost of injection molded products; since the material-feeding turntable 21 rotates 180 degrees, the plastic parts ejected from the upper fixing ring 41 by the lower injection mold 65 are now on the outside of the top of the top plate 14, and then the staff uses a robot arm or a mechanical push rod to push the plastic parts located on the top of the upper fixing ring 41 inside the material-feeding turntable 21 into the collection frame for collection. After the cleaning is completed, the ejection hydraulic column 61 is controlled to be retracted downward until the lower injection mold 65 returns to its original position. At this time, the lifting drive mechanism 23 is controlled again to restart the control of the injection plate 25 to move downward, so that the upper injection mold 26 at the bottom and the lower injection mold 65 are re-attached together for secondary injection molding production.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical injection molding machine, comprising an equipment body, on which an injection molding unit, a waste chip collection unit and a positioning unit are arranged, characterized in that: The injection unit includes an upper injection mold, the positioning unit includes an upper fixing ring, the inner wall surface of the upper fixing ring is provided with a plurality of receiving grooves, each of the receiving grooves is provided with a cleaning mechanism, the cleaning mechanism includes a semicircular rotating plate, the semicircular rotating plate is rotationally matched with the inner wall of the receiving groove and a torsion spring is provided at the rotationally matched position, a burr scraper is provided on the outer side of the semicircular rotating plate, and an ejection unit is provided below the fixing ring, and the ejection unit includes a lower injection mold; During the mold closing process, the upper injection mold descends and contacts the top of the semicircular rotating plate extending from the receiving groove, so that the semicircular rotating plate is squeezed and rotated into the receiving groove; During the mold opening process, the semicircular rotating plate rotates and resets under the action of the torsion spring, so that the inner wall of the upper fixed ring is covered with burr scrapers that can cover the complete cross-sectional shape of the upper injection mold; when the lower injection mold ejects the injection molded part, the burr scraper contacts the outer surface of the injection molded part to scrape off burrs; an outer guide ring is provided at the bottom of the upper fixed ring, and the scraped burr waste can enter the waste collection unit through the outer guide ring for collection.

2. A vertical injection molding machine according to claim 1, characterized in that: The equipment body comprises a top plate, the injection unit comprises a material taking turntable arranged on the top of the top plate, a positioning column is arranged on the top of the material taking turntable, and a lifting drive mechanism and an injection molding component are arranged on the top of the positioning column.

3. A vertical injection molding machine according to claim 2, characterized in that: The output end of the lifting drive mechanism is fixedly connected with an injection molding plate, and an upper injection molding mold is arranged at the bottom of the injection molding plate.

4. A vertical injection molding machine according to claim 3, characterized in that: A rotating column is coaxially fixedly connected to the surface of the semicircular rotating plate, and the rotating column is rotatably installed on the inner wall of the storage groove. Torsion clamps are fixedly connected to the outer sides of both ends of the rotating column, and the torsion springs are respectively sleeved on the outer sides of both ends of the rotating column, and the two ends of the torsion spring are respectively fixedly connected to the torsion clamp and the inner wall of the storage groove.

5. A vertical injection molding machine according to claim 4, characterized in that: The ejection unit also includes an ejection hydraulic column, the lower injection mold is fixedly installed on the top of the ejection hydraulic column, a cleaning spring column is provided on the outer side of the ejection hydraulic column, and a residue scraper is provided at one end of the cleaning spring column.

6. A vertical injection molding machine according to claim 5, characterized in that: The waste collection unit includes a mold plate arranged on the material taking turntable, a guide inclined plate is provided at the bottom of the mold plate, a guide frame is provided on one side of the guide inclined plate, a collection ring is provided at one end of the guide frame, and a collection tube is provided at one end of the collection ring.

7. A vertical injection molding machine according to claim 6, characterized in that: The positioning unit also includes an inner injection ring. The upper fixed ring, the outer guide ring and the inner injection ring are fixedly connected inside the mold plate in sequence from top to bottom, and the inner diameter of the inner injection ring is smaller than the inner diameter of the upper fixed ring.

8. A vertical injection molding machine according to claim 7, characterized in that: The opening of the outer guide ring is inclined, so that the scraped burrs and waste chips can fall into the opening of the outer guide ring and slide along the inclined opening onto the guide inclined plate.

9. A vertical injection molding machine according to claim 8, characterized in that: A base is arranged at the bottom of the top plate, a service box is arranged on one side of the base, a protective frame is arranged on the top of the base and is arranged around the top plate, and a control panel is arranged on the outer side of the protective frame.

10. An injection molding method for processing skateboard accessories, using a vertical injection molding machine as described in any one of claims 1 to 9.

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