Convenient-to-clean injection molding machine for injection molding of plastic products

Abstract

The utility model discloses a convenient-to-clean injection molding machine for injection molding of plastic products, which relates to the technical field of injection molding machines and comprises a supporting machine base, a heating machine barrel welded on the outer wall of the top of the supporting machine base and a feed hopper arranged on the heating machine barrel. A detachable screw extrusion mechanism is arranged on the heating machine barrel, and the electric cleaning mechanism comprises a mounting frame, a motor, a transmission shaft arranged in the feeding hopper, and a scraper I and a scraper II which are fixedly connected to the outer wall of the transmission shaft in sequence. The electric cleaning mechanism is arranged in the feeding hopper, plastic particle raw materials adhered to the interior of the feeding hopper can be effectively and automatically cleaned, time and labor are saved in the cleaning process, and the cleaning efficiency and the cleaning effect are effectively improved; according to the utility model, the four butterfly nuts are screwed off, so that the extrusion screw can be detached from the heating machine barrel to be cleaned so as to ensure the normal use of the extrusion screw, thereby effectively improving the detaching and cleaning efficiency of the extrusion screw.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection molding machine for easy cleaning of plastic products. Background Technology

[0002] Injection molding machines are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and force it to be injected to fill the mold cavity. Existing injection molding machines have the following problems in use:

[0003] Firstly, when the feed hopper is in use, plastic granules are easily adhered to the inner wall and need to be cleaned manually. Manual cleaning is not only time-consuming and labor-intensive, but also inefficient and ineffective.

[0004] Secondly, since the extrusion screw is installed inside the injection molding machine, it is not convenient to disassemble and clean it. If it is not cleaned for a long time, it will affect its normal use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an easy-to-clean injection molding machine for plastic product injection molding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An easy-to-clean injection molding machine for injection molding plastic products includes a support base, a heating cylinder welded to the top outer wall of the support base, and a feed hopper provided on the heating cylinder. The feed hopper is equipped with an electric cleaning mechanism, and the heating cylinder is equipped with a detachable screw extrusion mechanism.

[0008] The electric cleaning mechanism includes a mounting frame fixedly connected to the outer wall of the top of the feed hopper, a motor fixedly installed on the outer wall of the center of the top of the mounting frame, a drive shaft located inside the feed hopper, and scraper blade one and scraper blade two fixedly connected to the outer wall of the drive shaft in sequence.

[0009] The detachable screw extrusion mechanism includes an assembly plate with threaded pins welded to the outer walls of all four corners on one side, an extrusion screw that is connected to the inner wall of the center of the assembly plate through bearings and located inside the heating barrel, a drive assembly, a positioning plate fixedly connected to one side of the heating barrel, and a scraper three fixedly connected to the outer wall of the extrusion screw, with the blade surface of the scraper three in contact with the inner wall of the heating barrel.

[0010] Preferably, the feed hopper consists of a pipe component fixedly connected to the top of the heating cylinder and a hopper portion fixedly connected to the top of the pipe portion. The inclined blade of scraper one contacts the inner wall of the hopper portion, and the blade of scraper two contacts the inner wall of the pipe portion.

[0011] Preferably, the output shaft of the motor passes through the mounting bracket and is coaxially and fixedly connected to the top end of the transmission shaft via a coupling, and the other side of the heating cylinder is threadedly connected to an injection molding machine nozzle.

[0012] Preferably, the drive assembly includes a fixed cover fixedly connected to the outer wall of the other side of the assembly plate, a drive motor fixedly installed on the top outer wall of the fixed cover, a driving bevel gear fixedly mounted on the output shaft of the drive motor, and a driven bevel gear fixedly mounted on one end of the extrusion screw.

[0013] Preferably, the output shaft of the drive motor passes through the fixed cover, and the driving bevel gear and the driven bevel gear mesh with each other and are both located inside the fixed cover.

[0014] Preferably, the positioning plate has pin holes at each of the four corners that are adapted to the threaded pins, the four threaded pins are respectively inserted into the four pin holes, and the exposed parts of the four threaded pins are threaded with wing nuts.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model is equipped with an electric cleaning mechanism in the feeding hopper. The drive shaft is driven to rotate by a motor. Then, scraper one and scraper two on the drive shaft will rotate in the hopper and pipe sections respectively. In this way, the plastic granules adhering in the feeding hopper can be automatically cleaned, saving time and effort and effectively improving cleaning efficiency and cleaning effect.

[0017] 2. During the rotation of the extrusion screw, the scraper rotates to effectively clean the plastic material adhering to the inner wall of the heating barrel. By unscrewing the four wing nuts, the extrusion screw can be removed from the heating barrel for cleaning to ensure its normal use, thereby effectively improving the disassembly and cleaning efficiency of the extrusion screw. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0019] Figure 2 This is a three-dimensional enlarged structural diagram of the extrusion screw connection area in this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of a partial vertical section of the present invention;

[0021] Figure 4 This is a cross-sectional view of the vertical section of the fixed cover in this utility model.

[0022] In the diagram: 1. Support base; 2. Heating cylinder; 3. Feed hopper; 4. Mounting bracket; 5. Motor; 6. Drive shaft; 7. Scraper 1; 8. Scraper 2; 9. Assembly plate; 10. Fixing cover; 11. Drive motor; 12. Driving bevel gear; 13. Driven bevel gear; 14. Positioning plate; 15. Threaded pin; 16. Pin hole; 17. Wing nut; 18. Extrusion screw; 19. Injection molding machine nozzle; 20. Scraper 3. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figure 1-2 An easy-to-clean injection molding machine for injection molding plastic products includes a support base 1, a heating cylinder 2 welded to the top outer wall of the support base 1, and a feed hopper 3 disposed on the heating cylinder 2.

[0025] In this embodiment, the feed hopper 3 is provided with an electric cleaning mechanism, which includes a mounting frame 4 fixedly connected to the top outer wall of the feed hopper 3, a motor 5 fixedly installed on the top center outer wall of the mounting frame 4, a transmission shaft 6 provided in the feed hopper 3, and scraper 7 and scraper 8 fixedly connected to the outer wall of the transmission shaft 6 in sequence.

[0026] Furthermore, the feed hopper 3 is composed of a pipe component fixedly connected to the top of the heating cylinder 2 and a hopper portion fixedly connected to the top of the pipe portion. The inclined blade of scraper 1 7 contacts the inner wall of the hopper portion, and the blade of scraper 2 8 contacts the inner wall of the pipe portion.

[0027] Furthermore, the output shaft of the motor 5 passes through the mounting bracket 4 and is coaxially and fixedly connected to the top of the transmission shaft 6 via a coupling. The other side of the heating cylinder 2 is threadedly connected to the injection molding machine nozzle 19, which facilitates the disassembly and cleaning of the injection molding machine nozzle 19.

[0028] The working principle of this embodiment is as follows: the motor 5 drives the transmission shaft 6 to rotate, and then the scraper 7 and scraper 8 on the transmission shaft 6 will rotate in the hopper and pipe sections respectively. In this way, the plastic granules adhering in the feed hopper 3 can be automatically cleaned, saving time and effort and effectively improving the cleaning efficiency and cleaning effect.

[0029] Example 2, refer to Figure 2-4 This embodiment is an optimization based on embodiment 1. Specifically, the heating barrel 2 is equipped with a detachable screw extrusion mechanism.

[0030] In this embodiment, the detachable screw extrusion mechanism includes an assembly plate 9 with threaded pins 15 welded to the outer walls of all four corners on one side, an extrusion screw 18 that is connected to the inner wall of the center of the assembly plate 9 through bearings and located in the heating barrel 2, a drive assembly, a positioning plate 14 fixedly connected to one side of the heating barrel 2, and a scraper 20 fixedly connected to the outer wall of the extrusion screw 18, the blade of the scraper 20 being in contact with the inner wall of the heating barrel 2;

[0031] Furthermore, the drive assembly includes a fixed cover 10 fixedly connected to the outer wall of the other side of the assembly plate 9, a drive motor 11 fixedly installed on the top outer wall of the fixed cover 10, a drive bevel gear 12 fixedly mounted on the output shaft of the drive motor 11, and a driven bevel gear 13 fixedly mounted on one end of the extrusion screw 18. The output shaft of the drive motor 11 passes through the fixed cover 10, and the drive bevel gear 12 and the driven bevel gear 13 mesh with each other and are both located inside the fixed cover 10.

[0032] Furthermore, each of the four corners of the positioning plate 14 is provided with a pin hole 16 that is compatible with the threaded pin 15. The four threaded pins 15 are respectively inserted into the four pin holes 16, and the exposed parts of the four threaded pins 15 are threaded with a wing nut 17.

[0033] The working principle of this embodiment is as follows: First, insert the four threaded pins 15 on the assembly plate 9 into the corresponding four pin holes 16. At this time, the assembly plate 9 and the positioning plate 14 are locked together by the threaded engagement of the four wing nuts 17 and the four threaded pins 15. In this way, the extrusion screw 18 on the assembly plate 9 can be installed into the heating barrel 2.

[0034] Secondly, the drive motor 11 controls the rotation of the active bevel gear 12, and the driven bevel gear 13, which meshes with the active bevel gear 12, drives the extrusion screw 18 to rotate inside the heating barrel 2, which can push the plastic material entering from the feed hopper 3 forward. During the process of being pushed, the plastic material comes into contact with the inner wall of the heating barrel 2 and is heated and melted. The heated and melted plastic material is extruded from the injection molding machine nozzle 19 and injected into the subsequent mold.

[0035] Finally, as the extrusion screw 18 rotates, it also drives the scraper 20 to rotate, effectively cleaning the plastic material adhering to the inner wall of the heating barrel 2. By unscrewing the four wing nuts 17, the extrusion screw 18 can be removed from the heating barrel 2 for cleaning.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An easy-to-clean injection molding machine for injection molding plastic products, comprising a support base (1), a heating cylinder (2) welded to the top outer wall of the support base (1), and a feed hopper (3) disposed on the heating cylinder (2), characterized in that, The feed hopper (3) is equipped with an electric cleaning mechanism, and the heating barrel (2) is equipped with a detachable screw extrusion mechanism; The electric cleaning mechanism includes a mounting frame (4) fixedly connected to the top outer wall of the feed hopper (3), a motor (5) fixedly installed on the top center outer wall of the mounting frame (4), a transmission shaft (6) located inside the feed hopper (3), and scraper one (7) and scraper two (8) fixedly connected to the outer wall of the transmission shaft (6) in sequence. The detachable screw extrusion mechanism includes an assembly plate (9) with threaded pins (15) welded to the outer walls of all four corners on one side, an extrusion screw (18) that is connected to the inner wall of the center of the assembly plate (9) through bearings and located in the heating barrel (2), a drive assembly, a positioning plate (14) fixedly connected to one side of the heating barrel (2), and a scraper three (20) fixedly connected to the outer wall of the extrusion screw (18), with the blade of the scraper three (20) in contact with the inner wall of the heating barrel (2).

2. The easy-to-clean injection molding machine for injection molding plastic products according to claim 1, characterized in that, The feed hopper (3) consists of a pipe component fixedly connected to the top of the heating cylinder (2) and a hopper portion fixedly connected to the top of the pipe portion. The inclined blade of scraper one (7) is in contact with the inner wall of the hopper portion, and the blade of scraper two (8) is in contact with the inner wall of the pipe portion.

3. The easy-to-clean injection molding machine for injection molding plastic products according to claim 1, characterized in that, The output shaft of the motor (5) passes through the mounting bracket (4) and is coaxially fixedly connected to the top end of the transmission shaft (6) via a coupling, and the other side of the heating barrel (2) is threadedly connected to the injection molding machine nozzle (19).

4. The easy-to-clean injection molding machine for injection molding plastic products according to claim 1, characterized in that, The drive assembly includes a fixed cover (10) fixedly connected to the outer wall of the other side of the assembly plate (9), a drive motor (11) fixedly installed on the top outer wall of the fixed cover (10), a driving bevel gear (12) fixedly mounted on the output shaft of the drive motor (11), and a driven bevel gear (13) fixedly mounted on one end of the extrusion screw (18).

5. The easy-to-clean injection molding machine for injection molding plastic products according to claim 4, characterized in that, The output shaft of the drive motor (11) passes through the fixed cover (10), and the driving bevel gear (12) and the driven bevel gear (13) mesh with each other and are both located inside the fixed cover (10).

6. The easy-to-clean injection molding machine for injection molding plastic products according to claim 1, characterized in that, The positioning plate (14) has four corners with pin holes (16) that are compatible with the threaded pins (15). The four threaded pins (15) are respectively inserted into the four pin holes (16), and the exposed parts of the four threaded pins (15) are threaded with wing nuts (17).

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