Wear-resistant and corrosion-resistant screw head assembly

Abstract

The utility model relates to screw head subassembly technical field discloses a wear -resisting anticorrosive screw head subassembly, including the overgluing head, the check ring and the meson, the overgluing head includes the glue guide head of conical structure, and the glue guide head end face is equipped with the connecting rod, and the connecting rod is detachably connected the meson, and the check ring spacing is limited between the overgluing head and the meson, glue guide head circumference is equipped with a plurality of overgluing grooves, and the check ring includes the fork ring and the connecting cylinder, and the fork ring and the connecting cylinder are equipped with the overgluing channel of intercommunication with overgluing groove between the connecting rod, and the fork ring one end can cooperate with the glue guide head, and the other end end face is equipped with the swivel ring of sliding, and the swivel ring and the connecting cylinder between are equipped with linear elastic piece, and the connecting cylinder other end end face cooperates with the meson, and the connecting cylinder inner wall is equipped with the mixing auxiliary part. The utility model has the advantages compared with prior art: it is convenient to control the check ring closed automatically, improves the control precision of the export amount, and it is convenient to reduce the friction between the check ring and the overgluing head, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the technical field of screw head assembly, specifically to a wear-resistant and corrosion-resistant screw head assembly. Background Technology

[0002] The screw head assembly of an injection molding machine, including the glue head, glue ring, and spacer, is a key part of the injection molding process.

[0003] In existing screw head assemblies, the glue-passing ring is placed between the separator and the glue-passing head. It is mostly driven by the back pressure of the molten glue to control the sealing and discharge of the molten glue. This makes the control not automatic, which may cause delays and result in inaccurate glue discharge. In addition, since the check ring and the glue-passing head often move asynchronously, the friction between them can easily cause wear to the glue-passing head, thus affecting its service life. Utility Model Content

[0004] The technical problem this invention aims to solve is that the sealing and discharge of molten adhesive controlled by the back pressure of the molten adhesive is not automatic, resulting in insufficient precision in the amount of molten adhesive discharged; the check ring and the glue feed head move out of sync, causing wear on the glue feed head and thus affecting its service life.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a wear-resistant and corrosion-resistant screw head assembly, including a glue guide head, a check ring, and a separator. The glue guide head includes a tapered glue guide head, and a connecting rod is provided on the end face of the glue guide head. The separator is detachably connected to the connecting rod, and the check ring is located between the glue guide head and the separator.

[0006] The guide head is provided with several glue passage grooves in its circumference. The anti-reverse ring includes a fork ring and a connecting cylinder. A glue passage channel communicating with the glue passage grooves is provided between the fork ring and the connecting cylinder and the connecting rod. One end of the fork ring can cooperate with the guide head, and the other end face is provided with a rotating ring. A linear elastic element is provided between the rotating ring and the connecting cylinder. The other end face of the connecting cylinder cooperates with the medium. A mixing auxiliary element is provided on the inner wall of the connecting cylinder.

[0007] Furthermore, one end of the fork ring is provided with a uniform array of shift forks that cooperate with the glue groove, and there is a gap between the shift forks and the inner wall of the glue groove. The other end is provided with an annular groove that cooperates with the rotating ring, and the rotating ring is provided with balls evenly distributed on it, with the balls abutting against the annular groove.

[0008] Furthermore, the linear elastic element includes a plurality of sliding rods disposed around the circumference of the rotating ring, and a sliding groove is provided on the connecting cylinder to slide in cooperation with the sliding rods, and a spring is provided between the bottom wall of the sliding groove and the sliding rod.

[0009] Furthermore, the guide head and the medium are both inclined at their opposite ends, the guide head can be sealed to the fork ring, and the connecting cylinder can be sealed to the medium.

[0010] Furthermore, the guide head is provided with an alloy anti-corrosion and wear-resistant layer on both sides of the glue channel.

[0011] Furthermore, the mixing auxiliary component includes a plurality of pins disposed circumferentially on the inner wall of the connecting cylinder.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. The linear elastic element facilitates the connection between the connecting cylinder and the medium to achieve a seal when the sol is not continuously introduced, thereby enabling faster and more precise control of the sol extrusion amount;

[0014] 2. When the glue-passing head is driven to rotate, the glue-passing head drives the fork ring, and the sliding arrangement of the connecting cylinder through the fork ring and the rotating ring can reduce the friction between the check ring and the glue-passing head, thus extending its service life.

[0015] 3. The mixing auxiliary components facilitate further mixing of the molten adhesive introduced into the glue channel, thereby aiding in uniform mixing. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a wear-resistant and corrosion-resistant screw head assembly according to this utility model.

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of a wear-resistant and corrosion-resistant screw head assembly according to this utility model.

[0018] Figure 3 yes Figure 2 A magnified structural diagram of A in the diagram.

[0019] Figure 4 This is an exploded structural diagram of a wear-resistant and corrosion-resistant screw head assembly according to this utility model.

[0020] As shown in the figure: 1. Glue guide head, 2. Connecting rod, 3. Check ring, 4. Meter, 5. Glue passage groove, 6. Fork ring, 7. Connecting cylinder, 8. Glue passage channel, 9. Rotary ring, 10. Linear elastic element, 11. Pin, 12. Shift fork, 13. Ring groove, 14. Ball bearing, 15. Slide rod, 16. Slide groove, 17. Spring. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Combined with appendixFigure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 A wear-resistant and corrosion-resistant screw head assembly includes a glue guide head, a check ring 3, and a separator 4. The glue guide head includes a tapered glue guide head 1, with a connecting rod 2 on the end face of the glue guide head 1. The separator 4 is detachably connected to the connecting rod 2. The glue guide head 1 has several glue grooves 5 circumferentially. The glue guide head 1 and the glue grooves 5 are respectively provided with an alloy anti-corrosion and wear-resistant layer. The check ring 3 includes a fork ring 6 and a connecting cylinder 7. A glue channel 8 communicating with the glue grooves 5 is provided between the fork ring 6 and the connecting cylinder 7 and the connecting rod 2. One end of the fork ring 6 can cooperate with the glue guide head 1, and the other end face is provided with a rotating ring 9. One end of the fork ring 6 is provided with a uniform array of shift forks 12 that cooperate with the glue grooves 5. The shift forks 12 and the inner wall of the glue grooves 5 are provided with a gap. The other end is provided with an annular groove 13 that cooperates with the rotating ring 9. The rotating ring 9 is provided with balls 14 evenly distributed and the balls 14 are set to abut against the annular groove 13.

[0023] The fork ring 6, through the cooperation of the shift fork 12 and the glue passage groove 5, can drive the fork ring 6 to rotate synchronously when the glue passage head rotates. The cooperation between the rotating ring 9 and the ball bearing 14 makes it easy for the connecting cylinder 7 to be in a stationary state, thereby reducing the friction between it and the glue passage head. In addition, the anti-corrosion and wear-resistant layer in the glue passage groove helps to reduce the strength of the glue passage groove 5, thereby extending the service life of the glue passage head.

[0024] Combined with appendix Figure 2 The check ring 3 is located between the glue guide head 1 and the medium 4. The opposite end faces of the glue guide head 1 and the medium 4 are inclined. The glue guide head 1 can be sealed with the fork ring 6, and the connecting cylinder 7 can be sealed with the medium 4.

[0025] First, attach the check ring 3 to the outside of the connecting rod 2, and align the shift fork 12 with the guide groove until the end face of the fork ring 6 mates with the end face of the guide head 1.

[0026] Then, the connecting cylinder 7 is driven to move towards the fork ring 6 by the linear elastic element 10, and the spacer 4 is installed outside the connecting rod 2;

[0027] Under normal circumstances, the connecting cylinder 7 abuts against the medium 4 under the action of the linear elastic element 10;

[0028] When the molten adhesive is extruded, since the outer diameter of the connecting cylinder 7 is larger than the outer diameter of the spacer 4, the molten adhesive can drive the connecting cylinder 7, causing the connecting cylinder 7 to move to the left after resisting the action of the linear elastic element 10, so that the molten adhesive can be introduced into the glue channel 8 and then discharged through the glue groove 5.

[0029] When the discharge volume is reached, the connecting cylinder 7 is no longer driven. At this time, the connecting cylinder 7 is reset under the action of the linear elastic element 10, and then seals with the separator 4 again, which facilitates rapid control response to the discharge of molten adhesive.

[0030] Combined with appendix Figure 3 A linear elastic element 10 is provided between the rotating ring 9 and the connecting cylinder 7. The linear elastic element 10 includes a plurality of sliding rods 15 arranged around the circumference of the rotating ring 9. A sliding groove 16 is provided on the connecting cylinder 7 to slide in cooperation with the sliding rods 15. A spring 17 is provided between the bottom wall of the sliding groove 16 and the sliding rod 15.

[0031] Under normal circumstances, the spring 17 drives the connecting cylinder 7 to slide axially along the slide rod 15, so that the connecting cylinder 7 cooperates with the separator 4;

[0032] As the molten adhesive is continuously discharged, the molten adhesive drive connecting cylinder 7 overcomes the action of the spring 17 and moves to the left along the slide bar 15, facilitating the introduction of molten adhesive into the glue channel 8.

[0033] Combined with appendix Figure 2 Figure 3 The inner wall of the connecting cylinder 7 is provided with a mixing auxiliary component, which includes a plurality of pins 11 disposed circumferentially on the inner wall of the connecting cylinder 7.

[0034] The glue-passing head is rotating, while the connecting cylinder 7 is stationary. The pin 11 further shears the molten glue in the glue-passing channel 8, thereby helping to improve the mixing efficiency.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wear-resistant and corrosion-resistant screw head assembly, comprising a glue guide head, a check ring (3), and a separator (4), wherein the glue guide head includes a tapered glue guide head (1), a connecting rod (2) is provided on the end face of the glue guide head (1), and the separator (4) is detachably connected to the connecting rod (2), and the check ring (3) is located between the glue guide head and the separator (4), characterized in that: The guide head (1) is provided with several glue passage grooves (5) in the circumference. The anti-reverse ring (3) includes a fork ring (6) and a connecting cylinder (7). A glue passage channel (8) communicating with the glue passage grooves (5) is provided between the fork ring (6) and the connecting cylinder (7) and the connecting rod (2). One end of the fork ring (6) can cooperate with the guide head (1), and the other end face is provided with a rotating ring (9). A linear elastic element (10) is provided between the rotating ring (9) and the connecting cylinder (7). The other end face of the connecting cylinder (7) cooperates with the medium (4). A mixing auxiliary element is provided on the inner wall of the connecting cylinder (7).

2. The wear-resistant and corrosion-resistant screw head assembly according to claim 1, characterized in that: One end of the fork ring (6) is provided with a fork (12) that cooperates with the glue groove (5), and the fork (12) has a gap with the inner wall of the glue groove (5). The other end is provided with an annular groove (13) that cooperates with the rotating ring (9). The rotating ring (9) is provided with balls (14) that abut against the annular groove (13).

3. The wear-resistant and corrosion-resistant screw head assembly according to claim 2, characterized in that: The linear elastic element (10) includes a plurality of slide rods (15) arranged around the circumference of the rotating ring (9), and a groove (16) is provided on the connecting cylinder (7) to slide in cooperation with the slide rods (15), and a spring (17) is provided between the bottom wall of the groove (16) and the slide rod (15).

4. The wear-resistant and corrosion-resistant screw head assembly according to claim 1, characterized in that: The guide head (1) and the spacer (4) are both inclined at their opposite ends. The guide head (1) can be sealed with the fork ring (6), and the connecting cylinder (7) can be sealed with the spacer (4).

5. The wear-resistant and corrosion-resistant screw head assembly according to claim 1, characterized in that: The guide head (1) is provided with an alloy anti-corrosion and wear-resistant layer on both sides of the glue channel (5).

6. The wear-resistant and corrosion-resistant screw head assembly according to claim 1, characterized in that: The mixing auxiliary component includes a plurality of pins (11) disposed circumferentially on the inner wall of the connecting cylinder (7).

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