Semi-automatic injection molding machine with injection molding machine nozzle convenient to replace

Abstract

The utility model discloses a semi-automatic injection molding machine convenient for replacing a nozzle of the injection molding machine, belongs to the technical field of injection molding machines, and mainly solves the problems that in the prior art, an injection molding head is difficult to disassemble, the injection molding head is inconvenient to replace and clean, time and labor are wasted, and the production quality of the injection molding machine cannot be ensured due to abrasion and aging of the injection molding head. The injection molding machine comprises a workbench, the top of the workbench is fixedly connected with a mounting frame, a moving plate is arranged in the mounting frame in a lifting mode, the bottom of the moving plate is fixedly connected with a fixing frame, the fixing frame is provided with a connecting cylinder in a penetrating mode, the connecting cylinder is in threaded connection with an assembling sleeve, and a nozzle body is arranged at the bottom of the assembling sleeve; two groups of connecting seats are fixedly connected to the outer surface of the assembly sleeve, a rotating shaft is arranged between each group of connecting seats through a bearing, a positioning clamping piece is coaxially arranged on the surface of each rotating shaft, a threaded sleeve is arranged on each positioning clamping piece, a threaded limiting rod is in threaded connection with the interior of each threaded sleeve, and two symmetrical limiting seats are arranged on the spray head body.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and more specifically, to a semi-automatic injection molding machine that facilitates the replacement of injection molding machine nozzles. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the main molding equipment used to make 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 inject it to fill the mold cavity. According to the arrangement of the injection device and the clamping device, injection molding machines can be divided into vertical, horizontal, and vertical-horizontal combination types. Injection molding machines have a wide range of applications.

[0003] However, there are various types of injection molding machines in the existing technology. For example, utility model patent CN218256381U relates to a vertical injection molding machine. This utility model includes a base and a mounting frame. The base has a hollow cavity inside. The mounting frame is fixedly connected to the top of the base. Lifting cylinders are provided on both sides of the top of the mounting frame. A piston rod is provided at the output end of the lifting cylinder. A moving plate is fixedly connected to the bottom end of the piston rod. A spiral injection molder is provided between the lifting cylinders. A feed cylinder is installed at the top of the spiral injection molder. A thermoplastic tube is provided at the bottom end of the spiral injection molder. This vertical injection molding machine, by setting up a moving plate, sleeve, limit rod, injection head, and a row of molds, ensures that the injection head accurately and stably descends into the workpiece grooves of the row of molds during injection. It is especially suitable for the injection molding of small hardware workpieces, ensuring injection quality and solving the problem of poor stability.

[0004] Although this injection molding machine facilitates injection and demolding, and allows the injection head to descend accurately and stably into the workpiece groove, ensuring injection quality, the injection head is fixed to the moving plate during use, making it difficult to disassemble. This makes it inconvenient to replace and clean the injection head, which is time-consuming and labor-intensive. At the same time, due to the wear and aging of the injection head, the production quality of the injection molding machine cannot be guaranteed. To avoid this, it is essential to design a semi-automatic injection molding machine that facilitates the replacement of the injection head. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To achieve the above objectives, this utility model provides a semi-automatic injection molding machine that facilitates the replacement of injection molding machine nozzles, achieved through the following specific technical means:

[0007] A semi-automatic injection molding machine for easy nozzle replacement includes a worktable. A mounting frame is fixedly connected to the top of the worktable. A movable plate is lifted and lowered inside the mounting frame. A fixed frame is fixedly connected to the bottom of the movable plate. A connecting cylinder is threaded through the fixed frame. An assembly sleeve is threaded onto the connecting cylinder. A nozzle body is located at the bottom of the assembly sleeve. Two sets of connecting seats are fixedly connected to the outer surface of the assembly sleeve. A rotating shaft is connected between each set of connecting seats via a bearing. Positioning cards are coaxially mounted on the surface of the rotating shaft. Threaded sleeves are mounted on the positioning cards. Threaded limit rods are threadedly connected to the threaded sleeves. Two symmetrical limit seats are mounted on the nozzle body. Threaded holes are opened on the limit seats, and the threaded holes match the threaded limit rods.

[0008] Preferably, one end of each threaded limiting rod is fixedly connected to an adjusting disc; the nozzle body is fitted with an installation bracket, on which a filter screen is fixedly connected, and the filter screen is located inside the assembly sleeve.

[0009] Preferably, a conveying cylinder is mounted on the top of the mounting frame via a bracket, a feed hopper is fixedly connected to the conveying cylinder, a rotary motor is mounted on the conveying cylinder, the output end of the rotary motor is connected to a screw conveying shaft, and the screw conveying shaft is located inside the conveying cylinder, with helical blades provided on the surface of the screw conveying shaft.

[0010] Preferably, one end of the conveying cylinder is connected to a heating pipe, and one end of the heating pipe extends into the mounting frame. One end of the heating pipe is connected to a material conveying hose, and one end of the material conveying hose extends into the interior of the connecting cylinder.

[0011] Preferably, the mounting bracket is inverted U-shaped, the fixing bracket is U-shaped, the two positioning cards are symmetrically distributed, and the end of the threaded limiting rod can be screwed into the threaded hole; a mold seat is provided on the worktable, and the mold seat is located below the nozzle body.

[0012] Preferably, a telescopic cylinder is installed on the mounting frame, and one end of the telescopic cylinder is fixedly connected to the moving plate, and the telescopic cylinder is fixed to one side of the conveying cylinder.

[0013] Preferably, the mounting bracket has two guide rods fixedly connected inside, and the two guide rods are symmetrically distributed. The movable plate is provided with two sliding sleeves, and the sliding sleeves are slidably installed between the guide rods and the sliding sleeves.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] This utility model, through the design of a connecting cylinder, assembly sleeve, nozzle body, positioning card, limit seat, threaded limit rod, and threaded hole, allows for the easy disassembly of the nozzle of the injection molding machine. This facilitates nozzle replacement or cleaning, saving time and effort, and prevents worn and aged nozzles from being used in injection molding operations, thus ensuring the production quality of the injection molding machine. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the nozzle;

[0019] Figure 3 This is an enlarged structural diagram of point A;

[0020] Figure 4 This is a schematic diagram of the filter cylinder.

[0021] Figure 5 This is a schematic diagram of the material conveying cylinder;

[0022] Figure 6 This is a partial structural schematic diagram of the present invention.

[0023] In the diagram: 1. Workbench; 2. Mounting frame; 3. Moving plate; 4. Fixed frame; 5. Connecting cylinder; 6. Assembly sleeve; 7. Nozzle body; 8. Connecting seat; 9. Rotating shaft; 10. Positioning card; 11. Limiting seat; 12. Threaded sleeve; 13. Threaded limiting rod; 14. Threaded hole; 15. Adjusting plate; 16. Mounting bracket; 17. Filter screen cylinder; 18. Conveying cylinder; 19. Feed hopper; 20. Rotary motor; 21. Screw conveyor shaft; 22. Screw blade; 23. Heating tube; 24. Conveying hose; 25. Telescopic cylinder; 26. Sliding sleeve; 27. Guide rod. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 as well as Figure 6 As shown, it is a structural schematic diagram of a semi-automatic injection molding machine in this embodiment that facilitates the replacement of injection molding machine nozzles. The semi-automatic injection molding machine in this embodiment includes a worktable 1, a mounting frame 2 fixedly connected to the top of the worktable 1, a movable plate 3 that is raised and lowered inside the mounting frame 2, and a fixed frame 4 fixedly connected to the bottom of the movable plate 3. The movable plate 3 can drive the injection molding machine nozzle to move up and down to drive the nozzle to perform injection molding operations.

[0028] In this embodiment, a connecting cylinder 5 is provided through the fixing frame 4. An assembly sleeve 6 is threadedly connected to the connecting cylinder 5. The assembly sleeve 6 can be rotated off the connecting cylinder 5 by utilizing the threaded engagement between the connecting cylinder 5 and the assembly sleeve 6. A nozzle body 7 is provided at the bottom of the assembly sleeve 6. Two sets of connecting seats 8 are fixedly connected to the outer surface of the assembly sleeve 6. A rotating shaft 9 is provided between each set of connecting seats 8 through a bearing. Positioning cards 10 are coaxially provided on the surface of the rotating shaft 9. A threaded sleeve 12 is provided on the positioning card 10. A threaded limiting rod 13 is threadedly connected inside the threaded sleeve 12. Two symmetrical limiting seats 11 are provided on the nozzle body 7. The limiting seats 11 have threaded holes 14, and the threaded holes 14 match the threaded limiting rods 13. One end of each limiting rod 13 is fixedly connected to an adjusting plate 15. During the disassembly of the injection molding machine nozzle, the two adjusting plates 15 are loosened. By utilizing the threaded engagement between the threaded limiting rod 13 and the threaded hole 14, the end of the threaded limiting rod 13 is rotated out of the threaded hole 14, releasing the fixation of the positioning card 10. Then, the two positioning cards 10 are deflected, causing the positioning cards 10 to disengage from the limiting seat 11, releasing the limiting effect of the positioning cards 10 on the limiting seat 11. Then, the nozzle body 7 is removed from the assembly sleeve 6. This allows the nozzle of the injection molding machine to be disassembled at any time, facilitating nozzle replacement or cleaning, saving time and effort, and preventing the injection molding of worn and aged nozzles, thus ensuring the production quality of the injection molding machine.

[0029] It is worth noting that in this embodiment, the mounting bracket 2 is inverted U-shaped, the fixing bracket 4 is U-shaped, the two positioning cards 10 are symmetrically distributed, and the end of the threaded limiting rod 13 can be screwed into the threaded hole 14; a mold seat is provided on the workbench 1, and the mold seat is located below the nozzle body 7.

[0030] like Figure 2 as well as Figure 4 As shown, in this embodiment, the nozzle body 7 is internally fitted with a mounting bracket 16, and a filter screen 17 is fixedly connected to the mounting bracket 16, and the filter screen 17 is located inside the assembly sleeve 6; since the injection molding machine nozzle contains unmeltable impurities and hard particles in the injection molding plastic during the injection molding process, the filter screen 17 is used to filter and intercept the impurities and hard particles to ensure the production quality of the injection molded products.

[0031] like Figure 6 As shown, in order to drive the movable plate 3 to move up and down, a telescopic cylinder 25 is installed on the mounting frame 2 in this embodiment, and one end of the telescopic cylinder 25 is fixedly connected to the movable plate 3. The telescopic cylinder 25 is fixed to one side of the conveying cylinder 18. Two guide rods 27 are fixedly connected inside the mounting frame 2, and the two guide rods 27 are symmetrically distributed. Two sliding sleeves 26 are provided through the movable plate 3, and the sliding sleeves 26 are slidably installed with respect to the guide rods 27. By controlling the telescopic cylinder 25 and utilizing the sliding cooperation between the sliding sleeves 26 and the guide rods 27, the movable plate 3 is driven to move up and down through one end of the telescopic cylinder 25, guided by the sliding sleeves 26 and the guide rods 27.

[0032] like Figure 1 as well as Figure 5 As shown, in this embodiment, a conveying cylinder 18 is mounted on the top of the mounting frame 2 via a bracket. A feed hopper 19 is fixedly connected to the conveying cylinder 18. A rotary motor 20 is mounted on the conveying cylinder 18. The output end of the rotary motor 20 is connected to a spiral conveying shaft 21, which is located inside the conveying cylinder 18. Spiral blades 22 are provided on the surface of the spiral conveying shaft 21. A heating pipe 23 is connected to one end of the conveying cylinder 18, and one end of the heating pipe 23 extends into the mounting frame 2. A conveying hose 24 is connected to one end of the heating pipe 23, and one end of the conveying hose 24 extends into the interior of the connecting cylinder 5. During the injection molding process, plastic particles are poured into the feed hopper 19, allowing them to be guided into the conveying cylinder 18. Then, the rotary motor 20 is controlled, and its output drives the screw conveyor shaft 21 to rotate, causing the screw blades 22 to move along with the screw conveyor shaft 21. The moving screw blades 22 push the plastic particles, injecting them into the heating tube 23. The heating tube 23 heats the plastic particles into a molten state, and then the molten plastic is conveyed through the conveying hose 24 into the connecting cylinder 5 for subsequent injection molding using the nozzle.

[0033] 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. A semi-automatic injection molding machine for easy replacement of injection molding machine nozzles, comprising a worktable (1), a mounting frame (2) fixedly connected to the top of the worktable (1), a movable plate (3) being provided for lifting and lowering inside the mounting frame (2), and a fixed frame (4) fixedly connected to the bottom of the movable plate (3), characterized in that: The fixed frame (4) is provided with a connecting barrel (5) penetratingly, the connecting barrel (5) is threadedly connected with an assembling sleeve (6), the bottom of the assembling sleeve (6) is provided with a nozzle body (7), the outer surface of the assembling sleeve (6) is fixedly connected with two groups of connecting seats (8), each group of connecting seats (8) is provided with a rotating shaft (9) through a bearing, the surface of the rotating shaft (9) is coaxially provided with a positioning card (10), the positioning card (10) is provided with a threaded sleeve (12), the threaded sleeve (12) is threadedly connected with a threaded limiting rod (13), the nozzle body (7) is provided with two symmetrical limiting seats (11), the limiting seat (11) is provided with a threaded hole (14), and the threaded hole (14) is matched with the threaded limiting rod (13).

2. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as defined in claim 1, wherein: One end of the threaded limiting rod (13) is fixedly connected with an adjusting disc (15); the inside of the nozzle body (7) is clamped with a mounting clamping seat (16), the mounting clamping seat (16) is fixedly connected with a filter screen barrel (17), and the filter screen barrel (17) is located in the assembling sleeve (6).

3. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as recited in claim 1, wherein: The top of the mounting frame (2) is provided with a conveying barrel (18) through a support, the conveying barrel (18) is fixedly connected with a feeding hopper (19), the conveying barrel (18) is provided with a rotating motor (20), the output end of the rotating motor (20) is connected with a spiral conveying shaft (21), and the spiral conveying shaft (21) is located in the conveying barrel (18), the surface of the spiral conveying shaft (21) is provided with a spiral blade (22).

4. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as defined in claim 3, wherein: One end of the conveying barrel (18) is communicated with a heating pipe (23), one end of the heating pipe (23) extends into the mounting frame (2), one end of the heating pipe (23) is communicated with a feeding hose (24), and one end of the feeding hose (24) extends into the inside of the connecting barrel (5).

5. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as recited in claim 1, wherein: The mounting frame (2) is inverted U-shaped, the fixed frame (4) is U-shaped, the two positioning cards (10) are symmetrically distributed, and the end of the threaded limiting rod (13) can be screwed into the threaded hole (14); the workbench (1) is provided with a mold seat, and the mold seat is located below the nozzle body (7).

6. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as described in claim 1, wherein: The mounting frame (2) is provided with a telescopic air cylinder (25), one end of the telescopic air cylinder (25) is fixedly connected with the moving plate (3), and the telescopic air cylinder (25) is fixed to one side of the conveying barrel (18).

7. A semi-automatic injection molding machine that facilitates replacement of an injection molding machine nozzle as described in claim 1, wherein: The inside of the mounting frame (2) is fixedly connected with two guide rods (27), and the two guide rods (27) are symmetrically distributed, the moving plate (3) is provided with two sliding sleeves (26) penetratingly, and the sliding sleeve (26) is slidingly installed between the guide rod (27).

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