Injection molding screw rod with structure convenient to disassemble

Abstract

The utility model provides an injection molding screw rod with a structure convenient to disassemble, which comprises a screw rod assembly, a screw rod main body II, an outer snap ring and a sealing ring, and the right side of the screw rod assembly is provided with the screw rod main body II used for assembling and injection molding together. Compared with the prior art, the screw assembly has the advantages that the screw assembly, the second screw body, the outer clamping ring and the sealing ring are additionally arranged, one end of the sealing ring is embedded into the sealing ring groove, the butt joint column of the first screw body is embedded into the butt joint hole, the limiting sliding block is embedded into the limiting sliding groove, and the bolt is used for preliminary fixing; an outer clamping sleeve is arranged on the outer side of a clamping ring groove, so that a clamping column is embedded into a clamping hole, a connecting block is embedded into a connecting groove and is clamped and fixed through a screw, the injection molding screw rod can be disassembled and assembled in a split mode, the screw rod assembly is additionally arranged, the screw rod assembly is assembled and used through a first screw rod body and a connecting base, and the connecting base is connected with a rotating part of an injection molding machine; and rotation structure connection is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of injection screw technology, and specifically relates to an injection screw with a convenient disassembly structure. Background Technology

[0002] The injection screw is one of the key components in an injection molding machine. Its main function is to heat and melt plastic granules, and then push the molten plastic into the injection nozzle through rotation, ultimately injecting it into the mold. The design and performance of the injection screw directly affect the quality and efficiency of injection molding. Most injection screws are manufactured as a single piece and installed inside the injection molding machine for conveying the injection material. The pitch of the screw gradually decreases on the outer part used to guide the injection material. The lower half of the injection screw experiences more wear than the upper half. Severe wear on the outer spiral guide part can affect the conveying of the injection material, leading to leakage. Therefore, if this condition cannot be repaired, the injection screw needs to be scrapped. The upper half of the injection screw may have less wear, resulting in significant waste and increasing the overall cost of the injection molding process.

[0003] In summary, the one-piece injection screw structure has some problems in use, so we hope to propose a new structure to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an injection screw with a convenient disassembly structure, thereby solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: an injection screw with a convenient disassembly structure, comprising: a screw assembly, a second screw body, an outer retaining ring, and a sealing ring. The right side of the screw assembly is provided with the second screw body for joint assembly and injection molding. The screw assembly includes a first screw body and a connecting seat. The left end of the first screw body is provided with a connecting post. The right side of the connecting post is fixedly connected to a first screw post. The right end of the outer side of the first screw post is provided with a retaining ring groove. An outer retaining ring is installed on the outside of the retaining ring groove to improve the connection strength between the first screw body and the second screw body. A sealing ring is installed at the connection between the first screw body and the second screw body to improve the sealing performance after connection. A mating post is fixedly connected to the right side of the first screw post.

[0006] In a preferred embodiment, four sets of circumferentially distributed limiting sliders are fixedly connected to the outer side of the docking post, and a screw post II is provided at the left end of the screw body II, with a docking hole opened on the left side of the screw post II.

[0007] In a preferred embodiment, four sets of circumferentially distributed limiting grooves are provided on the inner side of the docking hole. The docking post and the docking hole are fitted together, and the limiting slider and the limiting groove are movably fitted together. The docking post is embedded in the docking hole, and the limiting slider and the limiting groove are fitted together. Then, bolts are used to connect and fix the screw body one and the screw body two.

[0008] In a preferred embodiment, a screw head is fixedly connected to the right side of the second screw column, a spiral guide part 1 for guiding injection molding raw materials is fixedly connected to the outer side of the first screw column, and a spiral guide part 2 is fixedly connected to the outer side of the second screw column, wherein the pitch of the spiral guide part 1 is greater than that of the spiral guide part 2.

[0009] Both the right side of the first screw column and the left side of the second screw column are provided with sealing ring grooves for fitting the sealing ring. After installation, the left and right ends of the sealing ring are pressed and fitted together with the two sets of sealing ring grooves.

[0010] In a preferred embodiment, a retaining ring groove is also provided on the left end of the outer side of the screw post. The outer side of the retaining ring groove is provided with a number of sets of circumferentially distributed locking holes. The inner side of the outer retaining ring is fixedly connected with a locking post corresponding to each of the sets of locking holes.

[0011] In a preferred embodiment, a connecting block is fixedly connected to one end of the outer retaining ring, and a connecting groove is provided on the other side of the outer retaining ring. The outer retaining ring and the holding ring groove are fitted together, and the locking post and the locking hole are fitted together.

[0012] The connecting block and the connecting groove are interlocked and fixed by screws. The outer retaining ring is fixedly connected to a transition guide for connecting the first spiral guide part and the second spiral guide part. The outer retaining ring is fitted onto the outside of the holding ring groove, so that several sets of locking posts are engaged with the corresponding locking holes. After the connecting block is embedded in the connecting groove, it is connected by screws to strengthen the stability of the screw body one and the screw body two.

[0013] In a preferred embodiment, the outer side of the connecting column is provided with three sets of connecting grooves that are equally distributed in a circle, and the right end of the internal components of the connecting seat is provided with a connecting ring.

[0014] A connecting slider is fixedly connected to the inner side of the connecting ring, and a connecting flange is fixedly connected to the left side of the connecting ring. The connecting slider and the connecting groove are interlocked and fixed by bolts. The screw assembly is assembled and used through the screw body and the connecting seat. The connecting seat is connected to the rotating part of the injection molding machine to facilitate the connection of the rotating structure.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: By adding a screw assembly, a second screw body, an outer retaining ring, and a sealing ring, one end of the sealing ring is embedded in the sealing ring groove, so that the connecting post of the first screw body is fitted with the connecting hole and the limiting slider is fitted with the limiting groove. Bolts are used for initial fixation. The outer retaining ring is fitted to the outside of the holding ring groove so that the retaining post is fitted with the retaining hole. The connecting block is embedded in the connecting groove and fixed with screws. The injection screw can be disassembled and assembled separately. By adding a screw assembly, the screw assembly is assembled and used through the first screw body and the connecting seat. The connecting seat is connected to the rotating part of the injection molding machine, which facilitates the connection of the rotating structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an injection screw with a convenient disassembly structure according to the present invention.

[0018] Figure 2 This is an exploded structural diagram of an injection screw with a convenient disassembly structure according to the present invention.

[0019] Figure 3 This is a schematic diagram of the injection molding assembly in an injection screw with a convenient disassembly structure according to the present invention.

[0020] Figure 4 This is a schematic diagram of the injection body in an injection screw with a convenient disassembly structure according to the present invention.

[0021] Figure 5 This is a schematic diagram of the connecting seat in an injection screw with a convenient disassembly structure according to the present invention.

[0022] Figure 6 This is a schematic diagram of the injection body two in an injection screw with a convenient disassembly structure according to the present invention.

[0023] Figure 7 This is a schematic diagram of the outer retaining ring in an injection screw with a convenient disassembly structure according to the present invention.

[0024] In the diagram, 100 is the injection molding component, 101 is the first injection molding body, and 102 is the connecting seat.

[0025] 200-Injection molding body II, 201-Screw column II, 202-Spiral guide part II, 203-Screw head, 204-Interlocking hole, 205-Docking hole, 206-Limiting groove;

[0026] 300-Outer retaining ring, 301-Clamping post, 302-Transition guide section, 303-Connecting block, 304-Connecting groove;

[0027] 400 - Sealing ring;

[0028] 101a-Connecting column, 101b-Connecting slide, 101c-Screw column one, 101d-Spiral guide part one, 101e-Dating column, 101f-Limiting slider, 101g-Holding ring groove, 101h-Sealing ring groove;

[0029] 102a - Connecting ring, 102b - Connecting slider, 102c - Connecting flange. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1 to 7 This utility model provides a technical solution: an injection screw with a convenient disassembly structure, including: a screw assembly 100, a screw body 200, an outer retaining ring 300 and a sealing ring 400, and a screw body 200 for joint assembly and injection molding is provided on the right side of the screw assembly 100;

[0032] The screw assembly 100 includes a screw body 101 and a connecting seat 102. The left end of the screw body 101 is provided with a connecting post 101a. The right side of the connecting post 101a is fixedly connected to a screw post 101c. The right end of the outer side of the screw post 101c is provided with a holding ring groove 101g.

[0033] An outer retaining ring 300 is installed on the outside of the retaining ring groove 101g to improve the connection between the screw body 101 and the screw body 200. A sealing ring 400 is installed at the connection between the screw body 101 and the screw body 200 to improve the sealing performance after connection. A mating post 101e is fixedly connected to the right side of the screw post 101c.

[0034] Four sets of circumferentially distributed limiting sliders 101f are fixedly connected to the outer side of the docking post 101e. The left end of the screw body 200 is provided with screw post 201, and the left side of screw post 201 is provided with docking hole 205.

[0035] Four sets of circumferentially distributed limiting grooves 206 are provided on the inner side of the docking hole 205. The docking post 101e is fitted into the docking hole 205 and the limiting slider 101f is movably fitted into the limiting groove 206. The docking post 101e is embedded in the docking hole 205, and the limiting slider 101f is fitted into the limiting groove 206. After the limiting slider 101f is fitted into the limiting groove 206, bolts are used to connect and fix the screw body 101 and the screw body 200 in the initial stage.

[0036] A screw head 203 is fixedly connected to the right side of the screw column 201. A spiral guide part 101d for guiding injection molding raw materials is fixedly connected to the outside of the screw column 101c. A spiral guide part 202 is fixedly connected to the outside of the screw column 201. The pitch of the spiral guide part 101d is greater than that of the spiral guide part 202.

[0037] Both the right side of screw column 101c and the left side of screw column 201 are provided with sealing ring grooves 101h for fitting the sealing ring 400. After installation, the left and right ends of the sealing ring 400 are pressed and fitted with the two sets of sealing ring grooves 101h.

[0038] The left end of the outer side of the screw post 201 is also provided with a retaining ring groove 101g. The outer side of the retaining ring groove 101g is provided with a number of sets of circumferentially distributed locking holes 204. The inner side of the outer retaining ring 300 is fixedly connected with a locking post 301 corresponding to the number of sets of locking holes 204.

[0039] A connecting block 303 is fixedly connected to one end of the outer retaining ring 300, and a connecting groove 304 is opened on the other side of the outer retaining ring 300. The outer retaining ring 300 and the retaining ring groove 101g are fitted together, and the retaining post 301 and the retaining hole 204 are fitted together.

[0040] The connecting block 303 and the connecting groove 304 are interlocked and fixed by screws. The outer retaining ring 300 is fixedly connected to the outer side of the transition guide part 302 for connecting the first spiral guide part 101d and the second spiral guide part 202. The outer retaining ring 300 is fitted onto the outer side of the holding ring groove 101g, so that several sets of locking posts 301 are fitted into the corresponding locking holes 204. After the connecting block 303 is embedded into the connecting groove 304, it is connected by screws to firmly support the screw body 101 and the screw body 200.

[0041] Please see Figures 1-4 and Figures 6-7As the first embodiment of this utility model: First, when assembling the injection molding screw, the user inserts the mating post 101e into the mating hole 205, and after the limiting slider 101f and the limiting groove 206 are engaged, they are connected with bolts to initially connect and fix the screw body 101 and the screw body 200, and can prevent relative rotation between the screw body 101 and the screw body 200 during use. Second, the user puts the outer retaining ring 300 on the outside of the retaining ring groove 101g, so that several sets of retaining posts 301 are engaged with the corresponding retaining holes 204, and after the connecting block 303 is inserted into the connecting groove 304, it is connected with screws to firmly reinforce the screw body 101 and the screw body 200, so that the screw can be easily disassembled and used.

[0042] The outer side of the connecting column 101a is provided with three sets of circumferentially distributed connecting grooves 101b, and the right end of the internal component of the connecting seat 102 is provided with a connecting ring 102a.

[0043] A connecting slider 102b is fixedly connected to the inner side of the connecting ring 102a, and a connecting flange 102c is fixedly connected to the left side of the connecting ring 102a. The connecting slider 102b and the connecting groove 101b are interlocked and fixedly connected by bolts. The screw assembly 100 is assembled and used through the screw body 101 and the connecting seat 102. The connecting seat 102 is connected to the rotating part of the injection molding machine to realize rotation transmission.

[0044] Please see Figure 1 and Figures 3-5 As a second embodiment of this utility model: Based on the first embodiment above, the screw assembly 100 is composed of a screw body 101 and a connecting seat 102. The connecting post 101a is fitted into the inner side of the connecting ring 102a, and the connecting slider 102b and the connecting groove 101b are interlocked and fixed by bolts. The screw assembly 100 is assembled and can connect the connecting flange 102c to the rotating parts of the injection molding machine, which facilitates the connection of the rotating structure.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection screw with a convenient disassembly structure, comprising: The screw assembly (100), screw body two (200), outer retaining ring (300) and sealing ring (400) are characterized in that: the right side of the screw assembly (100) is provided with screw body two (200) for joint assembly and injection molding; The screw assembly (100) includes a screw body (101) and a connecting seat (102). The left end of the screw body (101) is provided with a connecting post (101a). The right side of the connecting post (101a) is fixedly connected to a screw post (101c). The right end of the outer side of the screw post (101c) is provided with a holding ring groove (101g). An outer retaining ring (300) is installed on the outside of the retaining ring groove (101g) to improve the connection between the screw body one (101) and the screw body two (200). A sealing ring (400) is installed at the connection between the screw body one (101) and the screw body two (200) to improve the sealing performance after connection. A docking post (101e) is fixedly connected to the right side of the screw post one (101c).

2. The injection screw with a convenient disassembly structure as described in claim 1, characterized in that: The outer side of the docking post (101e) is fixedly connected with four sets of circumferentially distributed limiting sliders (101f). The left end of the screw body two (200) is provided with screw post two (201), and the left side of the screw post two (201) is provided with docking hole (205).

3. The injection screw with a convenient disassembly structure as described in claim 2, characterized in that: The inner side of the docking hole (205) is provided with four sets of circumferentially distributed limiting grooves (206). The docking post (101e) is fitted into the docking hole (205) and the limiting slider (101f) is movably fitted into the limiting groove (206).

4. The injection screw with a convenient disassembly structure as described in claim 3, characterized in that: A screw head (203) is fixedly connected to the right side of the second screw column (201), a spiral guide part (101d) for guiding injection molding raw materials is fixedly connected to the outside of the first screw column (101c), and a spiral guide part (202) is fixedly connected to the outside of the second screw column (201). The pitch of the spiral guide part (101d) is greater than that of the spiral guide part (202). Both the right side of the first screw column (101c) and the left side of the second screw column (201) are provided with sealing ring grooves (101h) for fitting the sealing ring (400). After installation, the left and right ends of the sealing ring (400) are pressed and fitted together with the two sets of sealing ring grooves (101h).

5. The injection screw with a convenient disassembly structure as described in claim 4, characterized in that: The left end of the outer side of the screw post 2 (201) is also provided with a retaining ring groove (101g). The outer side of the retaining ring groove (101g) is provided with a number of sets of circumferentially distributed locking holes (204). The inner side of the outer retaining ring (300) is fixedly connected with a locking post (301) that corresponds one-to-one with the number of sets of locking holes (204).

6. The injection screw with a convenient disassembly structure as described in claim 5, characterized in that: A connecting block (303) is fixedly connected to one end of the outer retaining ring (300), and a connecting groove (304) is opened on the other side of the outer retaining ring (300). The outer retaining ring (300) and the holding ring groove (101g) are fitted together, and the locking post (301) and the locking hole (204) are fitted together. The connecting block (303) and the connecting groove (304) are interlocked and fixed by screws. The outer retaining ring (300) is fixedly connected to a transition guide (302) for connecting the first spiral guide part (101d) and the second spiral guide part (202).

7. The injection screw with a convenient disassembly structure as described in claim 1, characterized in that: The outer side of the connecting column (101a) is provided with three sets of connecting grooves (101b) that are evenly distributed in a circle, and the right end of the connecting seat (102) is provided with a connecting ring (102a). A connecting slider (102b) is fixedly connected to the inner side of the connecting ring (102a), and a connecting flange (102c) is fixedly connected to the left side of the connecting ring (102a). The connecting slider (102b) and the connecting groove (101b) are interlocked and fixedly connected by bolts.

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