Injection molding machine with nozzle convenient to replace

Abstract

The utility model discloses an injection molding machine with a nozzle convenient to replace, which comprises an injection molding machine main body, one end of the injection molding machine main body is provided with a material guide pipe, the other end of the material guide pipe is provided with a spraying mechanism, the spraying mechanism comprises a nozzle body, one side of the nozzle body is movably provided with a connecting pipe, and the connecting pipe is connected with the injection molding machine main body. Arc-shaped clamping plates are fixedly arranged on the outer wall of the spray head body and located on the two sides, round holes are formed in the outer walls of the arc-shaped clamping plates, plug pins are arranged in the round holes in a sliding mode, and avoiding grooves are formed in the outer ends of the round holes and located on the outer walls of the arc-shaped clamping plates; a pressing block is arranged at one end of the plug pin and located in the avoiding groove, so that a user can rotate the fastening nut to be separated from the pressing block, the spring ejects the pressing block out, at the moment, the pressing block is pulled outwards to enable one end of the plug pin to be separated from the inserting groove, and at the moment, the connecting pipe and the spray head body can be detached and replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and more particularly to an injection molding machine with convenient nozzle replacement. Background Art

[0002] An injection molding machine, also known as an injection molding machine or injection machine, is the primary molding equipment used to create various shapes of plastic products from thermoplastics or thermosetting plastics using plastic molding molds. It is available in vertical, horizontal, and all-electric models. The machine heats the plastic and applies high pressure to the molten plastic, ejecting it and filling the mold cavity. The machine is equipped with an injection nozzle, the design and performance of which directly impacts the quality and production efficiency of the molded product. Nozzles are typically made of materials such as stainless steel, silicon nitride, and cemented carbide to achieve high-temperature, corrosion-, and wear-resistance.

[0003] Traditional injection molding machines sometimes need to disassemble and clean the nozzles during the production of different products. However, most existing injection molding machines fix the nozzles with bolts, which requires tools for disassembly. This makes it difficult to quickly disassemble the nozzles and thus inconvenient for rapid maintenance of the injection molding machine.

[0004] Moreover, the material guide tube on the injection molding machine does not have the function of filtering the raw materials during use. As a result, when there are large impurities inside the raw materials, the nozzle outlet will be blocked, thereby affecting the normal injection molding operation. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the problems existing in the prior art, the utility model provides an injection molding machine that is convenient for replacing nozzles, so as to solve the technical problem mentioned in the background technology that most of the existing injection molding machines fix the nozzles with bolts, resulting in the need for tools during disassembly, which makes it inconvenient to quickly disassemble the nozzles of the injection molding machine.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned object, the utility model provides the following technical solution: an injection molding machine for convenient replacement of nozzles, comprising an injection molding machine body, a material guide tube being provided at one end of the injection molding machine body, a spraying mechanism being provided at the other end of the material guide tube, the spraying mechanism comprising a nozzle body, a connecting pipe being movably provided on one side of the nozzle body, an arc-shaped clamping plate being fixedly provided on the outer wall of the nozzle body and on both sides, a circular hole being provided on the outer wall of the arc-shaped clamping plate, a latch being slidably provided inside the circular hole, a avoidance groove being provided on the outer end of the circular hole and on the outer wall of the arc-shaped clamping plate, a pressure block being provided at one end of the latch and inside the avoidance groove, a slot being correspondingly provided on the outer wall of the connecting pipe, the other end of the latch being located inside the slot, an external thread being provided on the outer wall of the arc-shaped clamping plate, a fastening nut being provided on the external thread, the inner wall of the fastening nut being in contact with the pressure block, a spring being provided between the pressure block and the inner wall of the avoidance groove, a filtering mechanism being provided inside the connecting pipe, and the filtering mechanism comprising a placement sleeve.

[0009] The utility model is further configured as follows: the placement sleeve is fixedly connected to the connecting pipe; a filter plate is movably provided inside the placement sleeve; filter holes are provided on the filter plate; the size of the filter holes can allow injection molding raw materials to pass through; a mounting ring is provided on the outer wall of the material guide tube; the mounting ring is located inside the placement sleeve and is threadedly connected to the inner wall of the placement sleeve; the mounting ring is against the outer wall of the filter plate, thereby facilitating the filtering of large particles of impurities in the raw materials.

[0010] The present invention is further configured such that a positioning groove is provided on the inner wall of the placement sleeve, and a positioning block is correspondingly provided on the outer wall of the filter plate. The positioning block is located inside the positioning groove to facilitate positioning and installation of the filter plate.

[0011] The utility model is further configured as follows: a feed barrel is provided at the upper end of the injection molding machine body, a feeding pipe is provided on the outer wall of the feed barrel, an electric push rod is provided on one side of the feed barrel and located on the upper end surface of the injection molding machine body, a bent rod is provided at the output end of the electric push rod, and a scraper is provided at the other end of the bent rod, and the scraper contacts the inner wall of the feed barrel to facilitate scraping off sticky raw materials on the inner wall of the feed barrel.

[0012] The utility model is further configured such that the bent rod is slidably connected to the upper end surface of the feed barrel, so as to facilitate the movement of the scraper.

[0013] The utility model is further configured such that the scraper is located at the upper end of the feeding pipe, so as to facilitate guiding the injection molding raw materials into the feeding barrel.

[0014] The present invention is further configured such that a first conical surface is provided on the inner wall of the connecting pipe, and a second conical surface is provided on the outer wall of the nozzle body. The second conical surface is located inside the first conical surface, so as to increase the sealing between the connecting pipe and the nozzle body.

[0015] The utility model is further configured such that a first sealing gasket is provided at the connection position between the material guide tube and the connecting tube, and a second sealing gasket is provided at the connection position between the connecting tube and the nozzle body, so as to increase the sealing between the material guide tube and the connecting tube, and between the connecting tube and the nozzle body.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides an injection molding machine that is convenient for replacing nozzles, and has the following beneficial effects:

[0018] 1. By providing a latch, a spring and a fastening nut, the user can disengage the pressure block by rotating the fastening nut, so that the spring pushes the pressure block out. At this time, the pressure block is pulled outward to disengage one end of the latch from the slot. At this time, the connecting pipe and the nozzle body can be disassembled for easy replacement. This design allows the nozzle body to be disassembled without the aid of tools, so as to facilitate the rapid replacement of nozzle bodies of different models. In addition, by providing a first conical surface and a second conical surface, when the nozzle body enters the connecting pipe, the second conical surface will also enter the first conical surface to increase the sealing of the connection position and prevent the injection molding material from leaking.

[0019] 2. By arranging a placement sleeve and a filter plate on the connecting pipe, the filter plate can filter large particles of impurities in the raw materials to prevent them from entering the nozzle body and causing blockage. The user can also regularly rotate the connecting pipe to remove it from the guide pipe, and then easily remove the filter plate inside the installation sleeve for easy cleaning. This design can block large particles of impurities in the injection molding raw materials to protect the nozzle body and reduce the number of disassembly times.

[0020] 3. By setting an electric push rod and a bending rod on one side of the feed barrel, the user can control the electric push rod to make the bending rod drive the scraper to move downward, so as to scrape off the injection molding material sticking on the inner wall of the feed barrel and make it enter the main body of the injection molding machine for subsequent use. This design can reduce the material residue on the inner wall of the feed barrel, thereby saving resources and facilitating subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of an injection molding machine that is convenient for replacing nozzles when not in use;

[0022] Figure 2 This is a schematic diagram of the installation of the material guide tube, nozzle body, connecting pipe and fastening nut;

[0023] Figure 3 This is the installation cross-sectional view of the guide pipe, nozzle body, connecting pipe, fastening nut and filter plate;

[0024] Figure 4 for Figure 3 A partial schematic diagram of area A in the middle;

[0025] Figure 5 This is the installation exploded view of the guide pipe, nozzle body, connecting pipe, fastening nut and filter plate;

[0026] Figure 6 Schematic diagram of the installation position of the bent rod and scraper inside the feed barrel.

[0027] In the figure: 1. Injection molding machine body; 2. Material guide pipe; 3. Nozzle body; 4. Connecting pipe; 5. Arc-shaped clamping plate; 6. Circular hole; 7. Latch; 8. Avoidance groove; 9. Pressure block; 10. Slot; 11. Fastening nut; 12. Spring; 13. Placement sleeve; 14. Filter plate; 15. Filter hole; 16. Mounting ring; 17. Positioning groove; 18. Positioning block; 19. Feed barrel; 20. Feeding pipe; 21. Electric push rod; 22. Bending rod; 23. Scraper; 24. First cone surface; 25. Second cone surface; 26. First sealing gasket; 27. Second sealing gasket. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0031] See also Figure 1-6, an injection molding machine for convenient nozzle replacement, including an injection molding machine body 1, a material guide tube 2 is provided at one end of the injection molding machine body 1, a spraying mechanism is provided at the other end of the material guide tube 2, the spraying mechanism includes a nozzle body 3, a connecting tube 4 is movably provided on one side of the nozzle body 3, an arc-shaped clamping plate 5 is fixed on the outer wall of the nozzle body 3 and located on both sides, a circular hole 6 is opened on the outer wall of the arc-shaped clamping plate 5, a latch 7 is slidably provided inside the circular hole 6, the outer end of the circular hole 6 is located on the outer wall of the arc-shaped clamping plate 5 A avoidance groove 8 is provided on each of them, a pressure block 9 is provided at one end of the pin 7 and inside the avoidance groove 8, a slot 10 is correspondingly provided on the outer wall of the connecting pipe 4, and the other end of the pin 7 is located inside the slot 10, an external thread is provided on the outer wall of the arc-shaped clamping plate 5, a fastening nut 11 is provided on the external thread, the inner wall of the fastening nut 11 is in contact with the pressure block 9, a spring 12 is provided between the pressure block 9 and the inner wall of the avoidance groove 8, a filtering mechanism is provided inside the connecting pipe 4, and the filtering mechanism includes a placement sleeve 13.

[0032] In this embodiment, the placement sleeve 13 is fixedly connected to the connecting pipe 4, and a filter plate 14 is movably provided inside the placement sleeve 13. A filter hole 15 is provided on the filter plate 14, and the size of the filter hole 15 can be passed by the injection molding material. A mounting ring 16 is provided on the outer wall of the guide tube 2. The mounting ring 16 is located inside the placement sleeve 13 and is threadedly connected to the inner wall of the placement sleeve 13. The mounting ring 16 is against the outer wall of the filter plate 14. A positioning groove 17 is provided on the inner wall of the placement sleeve 13, and a positioning block 18 is correspondingly provided on the outer wall of the filter plate 14. The positioning block 18 is located inside the positioning groove 17.

[0033] More specifically, when the nozzle body 3 needs to be cleaned, the user can disengage it from the pressure block 9 by rotating the fastening nut 11, so that the spring 12 pushes the pressure block 9 out, and then pull the pressure block 9 outward to disengage one end of the pin 7 from the slot 10. At this time, the connecting pipe 4 and the nozzle body 3 can be disassembled for easy cleaning, and by setting the first conical surface 24 and the second conical surface 25, when the nozzle body 3 enters the connecting pipe 4, the second conical surface 25 will also enter the first conical surface 24 to increase the sealing of its connection position and prevent the injection molding raw material from leaking. By setting the filter plate 14 inside the connecting pipe 4, large particles of impurities in the raw material can be filtered to prevent them from entering the nozzle body 3 and causing blockage. The user can also regularly rotate the connecting pipe 4 to remove it from the guide pipe 2, thereby facilitating the removal of the filter plate 14 inside the mounting sleeve for easy cleaning.

[0034] See also Figure 1 and Figure 6As an implementation method for cleaning the inner wall of the feed barrel 19: a feed barrel 19 is provided at the upper end of the injection molding machine body 1, and a feeding pipe 20 is provided on the outer wall of the feed barrel 19. An electric push rod 21 is provided on one side of the feed barrel 19 and located at the upper end surface of the injection molding machine body 1. A bent rod 22 is provided at the output end of the electric push rod 21, and a scraper 23 is provided at the other end of the bent rod 22. The scraper 23 contacts the inner wall of the feed barrel 19, and the bent rod 22 is slidably connected to the upper end surface of the feed barrel 19. The scraper 23 is located at the upper end of the feeding pipe 20.

[0035] Specifically, the user can add the injection molding raw materials into the feed barrel 19 through the feeding tube 20, and then control the electric push rod 21 to make the bending rod 22 drive the scraper 23 to move downward to scrape off the injection molding raw materials sticking to the inner wall of the feed barrel 19 and allow it to enter the injection molding machine body 1, thereby reducing the material residue on the inner wall of the feed barrel 19 and facilitating subsequent use.

[0036] Please refer to Figure 3-Figure 5 As a further implementation method to increase the sealing performance between the connecting pipe 4, the nozzle body 3, the material guide pipe 2 and the connecting pipe 4: a first conical surface 24 is provided on the inner wall of the connecting pipe 4, a second conical surface 25 is provided on the outer wall of the nozzle body 3, and the second conical surface 25 is located inside the first conical surface 24. A first sealing gasket 26 is provided at the connection position between the material guide pipe 2 and the connecting pipe 4, and a second sealing gasket 27 is provided at the connection position between the connecting pipe 4 and the nozzle body 3.

[0037] Specifically, it can prevent the material from leaking from the connection position between the connecting pipe 4, the nozzle body 3 and the material guide pipe 2, the connecting pipe 4, thereby increasing the sealing performance of the connection position.

[0038] In summary, when the overall device is in use: when the nozzle body 3 needs to be disassembled, the user can disengage the pressure block 9 by rotating the fastening nut 11, so that the spring 12 pushes the pressure block 9 out, and then pull the pressure block 9 outward to disengage one end of the latch 7 from the slot 10. At this time, the connecting pipe 4 and the nozzle body 3 can be disassembled for easy cleaning, and by setting the first conical surface 24 and the second conical surface 25, when the nozzle body 3 enters the connecting pipe 4, the second conical surface 25 will also enter the first conical surface 24 to increase the sealing of the connection position and prevent the injection molding material from leaking. By setting the filter plate 1 inside the connecting pipe 4 4. Large particles of impurities in the raw materials can be filtered to prevent them from entering the nozzle body 3 and causing blockage. The user can also rotate the connecting pipe 4 regularly to remove it from the guide pipe 2, so as to facilitate the removal of the filter plate 14 inside the mounting sleeve for easy cleaning. When adding materials, the user can add the injection molding raw materials into the feed barrel 19 through the feeding pipe 20, and then control the electric push rod 21 to make the bending rod 22 drive the scraper 23 to move downward to scrape off the injection molding raw materials sticking to the inner wall of the feed barrel 19 and make it enter the injection molding machine body 1, thereby reducing the material residue on the inner wall of the feed barrel 19 and facilitating subsequent use.

[0039] In all the solutions mentioned above, the connection between two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which are not listed here one by one. In the above, whenever there is a fixed connection, welding is preferably considered. Although the 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0040] In all the solutions mentioned above, if there is no clear description about the operation of electrical components, they are all controlled by the controller. Since the devices matched with the controller are common devices, their control principles and circuit connections are well-known and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0041] In all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are well-known technologies and will not be described in detail in this utility model.

[0042] In all the solutions mentioned above, those involving the connection between solar panels and batteries can be used in conjunction with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and line connections are all well-known and mature technologies. Their electrical connection relationships and specific circuit structures will not be described in detail here.

Claims

1. An injection molding machine with convenient nozzle replacement, comprising an injection molding machine body (1), characterized in that: A material guide tube (2) is provided at one end of the injection molding machine body (1), and a spraying mechanism is provided at the other end of the material guide tube (2). The spraying mechanism includes a nozzle body (3), a connecting tube (4) is movably provided on one side of the nozzle body (3), an arc-shaped clamping plate (5) is fixedly provided on the outer wall of the nozzle body (3) and on both sides, a circular hole (6) is provided on the outer wall of the arc-shaped clamping plate (5), a latch (7) is slidably provided inside the circular hole (6), a avoidance groove (8) is provided on the outer end of the circular hole (6) and on the outer wall of the arc-shaped clamping plate (5), and the latch A pressure block (9) is provided at one end of the connecting pipe (7) and is located inside the avoidance groove (8). A slot (10) is correspondingly provided on the outer wall of the connecting pipe (4). The other end of the latch (7) is located inside the slot (10). An external thread is provided on the outer wall of the arc-shaped clamping plate (5). A fastening nut (11) is provided on the external thread. The inner wall of the fastening nut (11) contacts the pressure block (9). A spring (12) is provided between the pressure block (9) and the inner wall of the avoidance groove (8). A filtering mechanism is provided inside the connecting pipe (4), and the filtering mechanism includes a placement sleeve (13).

2. The injection molding machine with convenient nozzle replacement according to claim 1, characterized in that: The placement sleeve (13) is fixedly connected to the connecting pipe (4); a filter plate (14) is movably provided inside the placement sleeve (13); a filter hole (15) is provided on the filter plate (14); the size of the filter hole (15) is such that the injection molding material can pass through; a mounting ring (16) is provided on the outer wall of the material guide tube (2); the mounting ring (16) is located inside the placement sleeve (13) and is threadedly connected to the inner wall of the placement sleeve (13); the mounting ring (16) is against the outer wall of the filter plate (14).

3. The injection molding machine with convenient nozzle replacement according to claim 2, characterized in that: A positioning groove (17) is provided on the inner wall of the placement sleeve (13), and a positioning block (18) is correspondingly provided on the outer wall of the filter plate (14), and the positioning block (18) is located inside the positioning groove (17).

4. The injection molding machine with convenient nozzle replacement according to claim 1, characterized in that: A feed barrel (19) is provided at the upper end of the injection molding machine body (1), a feeding pipe (20) is provided on the outer wall of the feed barrel (19), an electric push rod (21) is provided on one side of the feed barrel (19) and located on the upper end surface of the injection molding machine body (1), a bent rod (22) is provided at the output end of the electric push rod (21), a scraper (23) is provided at the other end of the bent rod (22), and the scraper (23) contacts the inner wall of the feed barrel (19).

5. The injection molding machine with convenient nozzle replacement according to claim 4, characterized in that: The bent rod (22) is slidably connected to the upper end surface of the feed cylinder (19).

6. The injection molding machine with convenient nozzle replacement according to claim 5, characterized in that: The scraper (23) is located at the upper end of the feeding pipe (20).

7. The injection molding machine with convenient nozzle replacement according to claim 1, characterized in that: A first conical surface (24) is provided on the inner wall of the connecting pipe (4), and a second conical surface (25) is provided on the outer wall of the nozzle body (3), wherein the second conical surface (25) is located inside the first conical surface (24).

8. The injection molding machine with convenient nozzle replacement according to claim 1, characterized in that: A first sealing gasket (26) is provided at the connection position between the material guide tube (2) and the connecting tube (4), and a second sealing gasket (27) is provided at the connection position between the connecting tube (4) and the nozzle body (3).

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