Raw material switching mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a raw material switching mechanism of an injection molding machine, which comprises a feeding cylinder, a fixing frame mounted on the outer surface of the feeding cylinder, a support mounted at the top of the fixing frame, and a limiting frame mounted at the top of the support. A plurality of feeding boxes which are evenly distributed in an annular array are installed at the top of the limiting frame in a penetrating mode, a switching disc is installed at the top of the feeding cylinder, a driving motor is installed at the top of the switching disc and placed at the bottom of the limiting frame in a limiting mode, and a cleaning assembly is installed at the top of the feeding cylinder; the raw material switching mechanism of the injection molding machine has the beneficial effects that residual raw materials on the surface of the switching disc are cleaned by utilizing the cleaning assembly, so that the residual raw materials in the rotating process are prevented from being adhered to other feeding boxes filled with different raw materials to influence the purity of the other raw materials; the finished product performance and the service life of a plastic product are influenced, so that the production efficiency of an injection molding machine is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machines, specifically to a raw material switching mechanism for injection molding machines. Background Technology

[0002] Injection molding machines are core equipment in the plastics processing industry. They are mainly used to manufacture plastic products of various shapes from thermoplastic or thermosetting plastic raw materials through steps such as heating, plasticizing, injection, molding, and cooling. The raw material switching mechanism of the injection molding machine is a key component in the injection molding equipment. It is mainly used to achieve rapid switching between different types or colors of plastic raw materials to improve production efficiency and flexibility.

[0003] In an existing injection molding machine material switching mechanism, the switching disc needs to be opened and closed for different feed boxes when switching materials. During the switching process, the surface of the switching disc is covered with residual material. As the disc rotates, the residual material sticks to other feed boxes containing different materials, affecting the purity of the other materials. This affects the finished product performance and lifespan of the plastic products, thus reducing the production efficiency of the injection molding machine.

[0004] Therefore, this utility model proposes a raw material switching mechanism for injection molding machines to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a raw material switching mechanism for injection molding machines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material switching mechanism for an injection molding machine, comprising: a feeding cylinder, a fixed frame mounted on the outer surface of the feeding cylinder, a support mounted on the top of the fixed frame, a limit frame mounted on the top of the support, a plurality of feeding boxes evenly distributed in a circular array through the top of the limit frame, a switching disc mounted on the top of the feeding cylinder, a drive motor mounted on the top of the switching disc, the drive motor being placed at the bottom of the limit frame for limiting installation, and a cleaning component mounted on the top of the feeding cylinder.

[0007] Preferably, the cleaning component includes a set of fixing rings, which are two rings of different sizes. The fixing rings are placed on the top of the feed cylinder and are located at the same center. Several connecting plates are installed between the fixing rings in a circular array.

[0008] Preferably, the connecting plate has a movable groove inside, a threaded rod is installed inside the movable groove, and a scraper is installed on the outer surface of the threaded rod. The scraper passes through both sides of the connecting plate and is located on the upper surface of the switching disk.

[0009] Preferably, the outer surface of the fixing ring is provided with a plurality of uniformly distributed discharge grooves in an annular array. The discharge grooves are located on both sides of the connecting plate. The outer end of the fixing ring is equipped with a screw that penetrates the interior of the fixing ring and into the interior of the feed cylinder.

[0010] Preferably, the top of the bracket is provided with a slot, and both sides of the limiting frame are equipped with collars, with the bracket passing through the inside of the collars.

[0011] Preferably, a locking rod is installed through the center of the collar, and a locking block is installed at the bottom of the locking rod, with the locking block located inside the locking groove.

[0012] Preferably, a spring is installed on the outer surface of the lever, with the bottom end of the spring located at the top of the collar.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The raw material switching mechanism for injection molding machines proposed in this utility model uses a cleaning component to clean the residual raw material on the surface of the switching plate, so as to prevent the residual raw material from sticking to other feed boxes containing different raw materials during the rotation process, which would affect the purity of other raw materials, thus affecting the finished performance and service life of plastic products and reducing the production efficiency of injection molding machines. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the raw material switching mechanism for an injection molding machine according to this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the top of the feed cylinder of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the cleaning component of this utility model;

[0018] Figure 4 This is a three-dimensional structure and a partially enlarged schematic diagram of the installation and disassembly of the limit frame of this utility model.

[0019] In the diagram: 1. Feed cylinder; 2. Fixed frame; 3. Support; 4. Limiting frame; 5. Feed box; 6. Switching disc; 7. Drive motor; 8. Cleaning assembly; 9. Fixing ring; 10. Connecting plate; 11. Movable groove;

[0020] 12. Threaded rod; 13. Scraper; 14. Discharge chute; 15. Screw; 16. Slot; 17. Collar; 18. Clamping rod; 19. Clamping block; 20. Spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] Please see Figures 1-4 This utility model provides a technical solution: a raw material switching mechanism for an injection molding machine, the raw material switching mechanism for an injection molding machine includes: a feeding cylinder 1, a fixed frame 2 installed on the outer surface of the feeding cylinder 1, a support 3 installed on the top of the fixed frame 2, a limiting frame 4 installed on the top of the support 3, a plurality of feeding boxes 5 evenly distributed in a circular array installed through the top of the limiting frame 4, a switching disk 6 installed on the top of the feeding cylinder 1, a drive motor 7 installed on the top of the switching disk 6, the drive motor 7 is placed at the bottom of the limiting frame 4 for limiting installation, and a cleaning component 8 installed on the top of the feeding cylinder 1;

[0024] In use, the feed cylinder 1 is easily installed and disassembled via the fixing frame 2. The limiting frame 4 is installed via the bracket 3. The feed box 5 is placed inside the limiting frame 4 to facilitate the loading of various raw materials. The drive motor 7 drives the switching plate 6 to rotate, which allows the holes on the switching plate 6 to move to the bottom of the feed box 5, thereby controlling the flow of raw materials from each feed box 5 into the feed cylinder 1 and into the injection molding machine. When the switching plate 6 rotates, it is important to prevent raw materials from remaining on the top of the switching plate 6. During the rotation process, residual raw materials may stick to other feed boxes 5 containing different raw materials, affecting the purity of other raw materials and thus the finished performance and service life of the plastic products, thereby reducing the production efficiency of the injection molding machine.

[0025] Example 2

[0026] Based on Embodiment 1, in order to clean the surface of the switching disk 6 and clean and collect the residual raw materials, the cleaning component 8 includes a set of fixing rings 9. The set of fixing rings 9 consists of two rings of different sizes. The fixing rings 9 are placed on the top of the feed cylinder 1 and are located at the same center. Several connecting plates 10 are installed between the fixing rings 9 in a circular array. The connecting plates 10 have movable grooves 11 inside. Threaded rods 12 are installed inside the movable grooves 11. Scrapers 13 are installed on the outer surface of the threaded rods 12. The scrapers 13 pass through both sides of the connecting plates 10 and are located on the upper surface of the switching disk 6. Several discharge grooves 14 are evenly distributed in a circular array on the outer surface of the fixing rings 9. The discharge grooves 14 are located on both sides of the connecting plates 10.

[0027] In use, the fixing ring 9 and the connecting plate 10 are connected to separate the various feed boxes 5. When the switching disc 6 rotates to the outlet of the feed box 5 where the next raw material flows in, the connecting plate 10 scrapes the raw material on the top of the switching disc 6 and prevents the raw material from moving into the range of the next feed box 5. By rotating the threaded rod 12, the scraper 13 is driven to move and discharge the excess raw material from the discharge trough 14 for collection and reuse.

[0028] Example 3

[0029] Based on Embodiment 2, in order to facilitate the installation and disassembly of the fixing ring 9 and the limiting frame 4, a screw 15 is installed on the outer end of the fixing ring 9. The screw 15 passes through the interior of the fixing ring 9 and into the interior of the feed cylinder 1. A slot 16 is provided on the top of the bracket 3. A collar 17 is installed on both sides of the limiting frame 4. The bracket 3 passes into the interior of the collar 17. A locking rod 18 is installed through the center of the interior of the collar 17. A locking block 19 is installed at the bottom of the locking rod 18. The locking block 19 is located inside the slot 16. A spring 20 is installed on the outer surface of the locking rod 18. The bottom end of the spring 20 is located at the top of the collar 17.

[0030] In use, the fixing ring 9 is fixed to the top of the feed cylinder 1 by the screw 15, and the limiting frame 4 moves into the slot 16 by the downward pulling force provided by the spring 20 through the clamping rod 18. The clamping rod 18 is rotated to make the clamping block 19 clamp and fix it in the inside of the bracket 3, thus fixing the limiting frame 4.

[0031] In actual use, the feed cylinder 1 is easily installed and disassembled via the fixing bracket 2. The limiting bracket 4 is installed via the bracket 3. The feed box 5 is placed inside the limiting bracket 4 to facilitate the loading of various raw materials. The drive motor 7 drives the switching disc 6 to rotate, which allows the holes on the switching disc 6 to move to the bottom of the feed box 5, thereby controlling the flow of raw materials from each feed box 5 into the feed cylinder 1 for use in the injection molding machine. When the switching disc 6 rotates, it is important to prevent raw materials from remaining on the top of the switching disc 6. The fixing ring 9 is fixed to the top of the feed cylinder 1 by screws 15. The limiting bracket 4 is secured by a clip. The rod 18 moves into the slot 16 under the downward pulling force provided by the spring 20. Rotating the rod 18 causes the block 19 to be locked and fixed inside the bracket 3, thus fixing the limit frame 4. The fixing ring 9 and the connecting plate 10 are connected to separate the feed boxes 5. When the switching plate 6 rotates to the outlet of the feed box 5 where the next raw material flows in, the connecting plate 10 scrapes the raw material on the top of the switching plate 6 and prevents the raw material from moving into the range of the next feed box 5. The rotation of the threaded rod 12 drives the scraper 13 to move and discharge the excess raw material from the discharge trough 14 for collection and reuse.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine material changeover mechanism characterized by: The injection molding machine raw material switching mechanism comprises a feeding cylinder (1), a fixed frame (2) is mounted on the outer surface of the feeding cylinder (1), a support (3) is mounted on the top of the fixed frame (2), a limiting frame (4) is mounted on the top of the support (3), a plurality of feeding boxes (5) evenly distributed in annular array are installed through the top of the limiting frame (4), a switching disc (6) is installed on the top of the feeding cylinder (1), a driving motor (7) is installed on the top of the switching disc (6), and the driving motor (7) is placed and limited on the bottom of the limiting frame (4), and a cleaning assembly (8) is installed on the top of the feeding cylinder (1).

2. A resin switching mechanism for an injection molding machine according to claim 1, characterized in that: The cleaning assembly (8) comprises a set of fixed rings (9), the fixed rings (9) are two annular rings of different sizes, the fixed rings (9) are placed on the top of the feeding cylinder (1) and located at the same center, and a plurality of connecting plates (10) evenly distributed in annular array are installed between the fixed rings (9).

3. A resin switching mechanism for an injection molding machine according to claim 2, characterized in that: The inside of the connecting plate (10) is provided with a movable groove (11), the inside of the movable groove (11) is provided with a threaded rod (12), the outer surface of the threaded rod (12) is provided with a scraper (13), the scraper (13) penetrates through the two sides of the connecting plate (10) and is located on the upper surface of the switching disc (6).

4. A resin switching mechanism for an injection molding machine according to claim 2, characterized in that: The outer surface of the fixed ring (9) is provided with a plurality of discharge grooves (14) evenly distributed in annular array, the discharge grooves (14) are located on the two sides of the connecting plate (10), the outer end of the fixed ring (9) is provided with a screw (15), the screw (15) penetrates the inside of the fixed ring (9) and penetrates into the inside of the feeding cylinder (1).

5. A resin switching mechanism for an injection molding machine according to claim 1, wherein: The top of the support (3) is provided with a clamping groove (16), the two sides of the limiting frame (4) are provided with a sleeve ring (17), and the support (3) penetrates into the inside of the sleeve ring (17).

6. A resin switching mechanism for an injection molding machine according to claim 5, wherein: The inside of the sleeve ring (17) is provided with a clamping rod (18) penetratingly installed at the center, the bottom of the clamping rod (18) is provided with a clamping block (19), and the clamping block (19) is located in the inside of the clamping groove (16).

7. A resin switching mechanism for an injection molding machine according to claim 6, wherein: The outer surface of the clamping rod (18) is provided with a spring (20), and the bottom end of the spring (20) is located on the top of the sleeve ring (17).

Images