Detachable extruder screw sleeve

Abstract

The utility model relates to the technical field of plastic processing, and discloses a detachable extruder screw sleeve, which comprises a main body assembly, a screw sleeve body, a second screw sleeve arranged at the top of the screw sleeve body, a sealing ring fixed at the top of the second screw sleeve, and a fixing assembly arranged on the second screw sleeve and comprising a fixing piece, a clamping block is arranged on the second screw sleeve, a clamping groove corresponding to the clamping block is formed in the screw sleeve body, the clamping block is arranged in the clamping groove, a supporting disc is fixed to the top of the clamping block, and a positioning column is fixed to the top of the supporting disc and fixed to the second screw sleeve. The screw barrel has the beneficial effects that the two halves of the clamped screw barrel can be divided into two parts to be disassembled during disassembly, the screw barrel can be taken down from the machine barrel more easily and conveniently, the requirement on the operation space is low, and the disassembly difficulty of the extruder in a limited environment is favorably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing, especially a detachable extruder screw sleeve. BACKGROUND

[0002] The extruder screw sleeve is a very important component in the extruder, which is usually installed outside the screw rod of the extruder, and is adapted in shape to the screw rod, generally in a cylindrical shape with a helical structure inside for cooperation with the screw rod. Its main function is to work cooperatively with the screw rod. When the material enters the extruder, the screw sleeve cooperates with the screw rod to provide a stable conveying channel for the material, ensuring that the material moves orderly in the intended direction. On the other hand, during the conveying of the material, the screw sleeve can assist the screw rod in compacting and plasticizing the material, gradually changing the material from an initial loose state to a uniform, well-flowing extrudable state, and finally extruding through the die to form various shaped products meeting production requirements. When disassembling, the screw sleeve needs to be pulled out axially from the extruder screw rod, which often requires a large operating space and sufficient external force to achieve the pulling-out action. However, in the limited production environment of the extruder, it is difficult to successfully complete this operation, which is difficult to operate. SUMMARY

[0003] The purpose of this section is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above and / or existing problems in the detachable extruder screw sleeve, the utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model is that in the limited production environment of the extruder, the screw sleeve needs to be pulled out axially from the screw rod when disassembling, which requires a large operating space and sufficient external force, making the operation difficult and difficult to complete successfully.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a detachable extruder screw sleeve, comprising a main body assembly, including a screw sleeve body, a second screw sleeve is arranged at the top of the screw sleeve body, and a sealing ring is fixed at the top of the second screw sleeve;

[0007] A fixing assembly is arranged on the second screw sleeve and comprises a fixing piece, the fixing piece comprises a clamping block, the clamping block is arranged on the second screw sleeve, a clamping groove corresponding to the clamping block is formed in the screw sleeve body, the clamping block is arranged in the clamping groove, a support disc is fixed at the top of the clamping block, a positioning column is fixed at the top of the support disc, and the positioning column is fixed on the second screw sleeve.

[0008] As a preferred scheme of the detachable extruder screw sleeve, the fixed assembly further comprises a moving piece, the moving piece comprises a connecting strip, the moving piece is fixed to the bottom of the second screw sleeve, a sliding groove corresponding to the connecting strip is formed on the screw sleeve body, and the connecting strip is movably connected with the sliding groove.

[0009] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0010] As a preferred scheme of the detachable extruder screw sleeve, the fixed assembly further comprises a moving piece, the moving piece comprises a connecting strip, the moving piece is fixed to the bottom of the second screw sleeve, a sliding groove corresponding to the connecting strip is formed on the screw sleeve body, and the connecting strip is movably connected with the sliding groove.

[0011] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0012] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0013] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0014] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0015] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0016] As a preferred scheme of the detachable extruder screw sleeve, a first spring is fixed to the bottom of the connecting strip, and one end of the first spring is fixed to the inner wall of the sliding groove.

[0017] The detachable extruder screw sleeve has the beneficial effects that the two half clamped screw sleeves can be disassembled into two parts when disassembled, are more convenient to take off from the cylinder, have low requirements on the operation space, and are beneficial to reducing the disassembly difficulty of the extruder in a limited environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. Among them:

[0019] Figure 1 It is a whole structure diagram of the detachable extruder screw sleeve.

[0020] Figure 2 It is a cross-sectional structure diagram of the screw sleeve body of the detachable extruder screw sleeve.

[0021] Figure 3 It is a structure diagram of the third spring of the detachable extruder screw sleeve. Figure 2 It is a local enlarged structure diagram of A in the figure.

[0022] Figure 4 It is a structure diagram of the sealing ring of the detachable extruder screw sleeve.

[0023] Figure 5 It is a structure diagram of the movable block of the detachable extruder screw sleeve. Figure 4 It is a local enlarged structure diagram of B in the figure.

[0024] Figure 6 It is a structure diagram of the third spring of the detachable extruder screw sleeve.

[0025] Figure 7 It is a structure diagram of the clamping block of the detachable extruder screw sleeve.

[0026] Figure 8 It is a structure diagram of the inclined surface plate of the detachable extruder screw sleeve.

[0027] In the figure: main body assembly 100; fixed assembly 200; screw sleeve body 101; second screw sleeve 102; sealing ring 103; fixed part 201; clamping block 201a; clamping groove X; support disc 201b; positioning column 201c; movable part 202; connecting strip 202a; sliding groove Y; first spring 202b; movable part 203; inclined surface plate 203a; connecting block 203b; guide groove Z; movable block 203c; movable strip 203d; movable disc 203e; second spring 203f; hinged rod 203g; pushing block 203h; pushing block 203i; positioning block 203j; third spring 203k. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0029] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that are not specifically described herein, and the present application is not limited to the embodiments described herein. Therefore, the present application is not limited to the specific embodiments described herein, but only by the claims.

[0030] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics contained in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive of other embodiments.

[0031] Embodiment 1

[0032] Reference Figures 1-8 For the first embodiment of the present application, the embodiment provides a detachable extruder sleeve, which comprises a main assembly 100 and a fixed assembly 200. The two can be separated into two parts when disassembled, which is easy to remove and requires low operating space, and can reduce the difficulty of disassembly in the limited environment of the extruder.

[0033] The main assembly 100 comprises a sleeve body 101, and a second sleeve 102 is arranged at the top of the sleeve body 101. A sealing ring 103 is fixed to the top of the second sleeve 102.

[0034] The number of sealing rings 103 is two, which are respectively fixed on one side of the sleeve body 101 and the second sleeve 102. During installation, the sleeve body 101 and the second sleeve 102 are respectively sleeved on the extruder screw, and then the two are clamped to complete the installation. When the two are clamped, the two sealing rings 103 can be pressed against each other, thereby improving the sealing performance and preventing leakage of the extruder during material conveying.

[0035] The fixed assembly 200 is arranged on the second sleeve 102 and comprises a fixing piece 201. The fixing piece 201 comprises a clamping block 201a arranged on the second sleeve 102. A clamping groove X corresponding to the clamping block 201a is arranged in the sleeve body 101. The clamping block 201a is arranged in the clamping groove X. A supporting disc 201b is fixed to the top of the clamping block 201a. A positioning column 201c is fixed to the top of the supporting disc 201b. The positioning column 201c is fixed to the second sleeve 102.

[0036] The number of the clamping blocks 201a is two, and the clamping blocks 201a are fixed to the bottom of the supporting disc 201b, the clamping blocks 201a are provided as inclined surfaces, and the clamping blocks 201a are elastic, when the second screw sleeve 102 is clamped with the screw sleeve body 101, at this time, the clamping groove X can extrude the clamping blocks 201a to make the clamping blocks 201a shrink, at this time, the clamping blocks 201a continue to move, when the clamping blocks 201a move to one end of the clamping groove X, the inclined surface of the clamping groove X is separated from the clamping blocks 201a, and the extrusion on the clamping blocks 201a is released, then the clamping blocks 201a can be tightly clamped with the clamping groove X through the rebound of the clamping blocks 201a, so that the installation is completed, the supporting disc 201b is used for supporting the clamping blocks 201a, and the deviation of the clamping blocks 201a is prevented, and the supporting disc 201b can be supported through the setting of the positioning column 201c.

[0037] First, the screw sleeve body 101 and the second screw sleeve 102 are respectively sleeved on the extruder screw, and the clamping installation operation of the two is prepared, the second screw sleeve 102 is moved towards the screw sleeve body 101 to be clamped, in this process, since the clamping blocks 201a are provided as inclined surfaces and are elastic, when the clamping blocks 201a contact the clamping groove X provided in the screw sleeve body 101, the clamping groove X will extrude the clamping blocks 201a to make the clamping blocks 201a shrink.

[0038] The second screw sleeve 102 is continuously pushed, and the clamping blocks 201a continue to move along the clamping groove X, when the clamping blocks 201a move to one end of the clamping groove X, the inclined surface of the clamping groove X is separated from the clamping blocks 201a, and the extrusion on the clamping blocks 201a is released, then the clamping blocks 201a are tightly clamped with the clamping groove X through the rebound of the clamping blocks 201a, at this time, the two sealing rings 103 fixed to one side of the screw sleeve body 101 and the second screw sleeve 102 respectively will extrude each other, the sealing performance of the whole is improved, and the leakage of the extruder during conveying materials is prevented, so that the installation of the screw sleeve body 101 and the second screw sleeve 102 is completed.

[0039] Embodiment 2

[0040] Reference Figures 2-8 For the second embodiment of the utility model, the embodiment is based on the previous embodiment.

[0041] Specifically, the fixing assembly 200 further includes a moving piece 202, the moving piece 202 includes a connecting strip 202a, the moving piece 202 is fixed to the bottom of the second screw sleeve 102, the screw sleeve body 101 is provided with a sliding groove Y corresponding to the connecting strip 202a, and the connecting strip 202a is movably connected with the sliding groove Y.

[0042] When the second screw sleeve 102 is clamped with the screw sleeve body 101, the second screw sleeve 102 drives the connecting strip 202a to move into the sliding groove Y, at this time, the second screw sleeve 102 can be supported, and the deviation of the second screw sleeve 102 during movement is prevented.

[0043] Specifically, the bottom of the connecting strip 202a is fixed with a first spring 202b, one end of the first spring 202b is fixed to the inner wall of the sliding groove Y.

[0044] When the connecting strip 202a moves in the sliding groove Y, the first spring 202b can be extruded, and when it is necessary to separate the second screw sleeve 102 from the screw sleeve body 101, the elastic force of the first spring 202b can drive the second screw sleeve 102 to separate from the screw sleeve body 101.

[0045] Specifically, the fixing assembly 200 further comprises a movable piece 203, the movable piece 203 comprises an inclined plane plate 203a, the inclined plane plate 203a is fixed to one side of the clamping block 201a, and the one side of the inclined plane plate 203a is provided with a connecting block 203b.

[0046] The number of the inclined plane plate 203a is two, and each is fixed to one side of the clamping block 201a, when it is necessary to separate the second screw sleeve 102 from the screw sleeve body 101, it is necessary to shrink the two clamping blocks 201a, by moving the connecting block 203b, the connecting block 203b will slide on one side of the two inclined plane plates 203a, at this time, the inclined plane plate 203a can be shrunk, so that the clamping block 201a is separated from the clamping groove X, and then the connecting strip 202a is extruded by the elastic force of the first spring 202b, so that the connecting strip 202a drives the second screw sleeve 102 to separate from the screw sleeve body 101.

[0047] Specifically, the one side of the inclined plane plate 203a is provided with a guide groove Z corresponding to the connecting block 203b, and the connecting block 203b slides in the guide groove Z.

[0048] The number of the connecting block 203b is two, and each slides in the guide groove Z, when the connecting block 203b moves and slides in the guide groove Z, at this time, the connecting block 203b can pull the guide groove Z so as to make the inclined plane plate 203a move, and through the movement of the inclined plane plate 203a, the clamping block 201a can be driven to move and shrink.

[0049] Specifically, the one side of the connecting block 203b is fixed with a movable block 203c, and the top of the movable block 203c is fixed with a movable strip 203d.

[0050] When it is necessary to make the clamping block 201a shrink, the movable strip 203d is moved, at this time, the movable strip 203d can drive the movable block 203c to move, and through the movement of the movable block 203c, the connecting block 203b can be driven to move, so as to make the clamping block 201a shrink.

[0051] Specifically, the outer side of the movable strip 203d is sleeved with a movable disc 203e, the top of the movable disc 203e is fixed with a second spring 203f, and one end of the second spring 203f is fixed to the inner wall of the positioning column 201c.

[0052] When the movable strip 203d moves, the movable disc 203e is driven to move, and the second spring 203f is pressed, and then the clamping block 201a is retracted to separate the second screw sleeve 102 from the screw sleeve body 101, and after the separation is completed, the movable strip 203d is loosened, and the second spring 203f is rebounded to drive the movable strip 203d to return to the original position, so that the clamping block 201a returns to the original position for next use.

[0053] When the second screw sleeve 102 is clamped with the screw sleeve body 101, the second screw sleeve 102 drives the connecting strip 202a to move into the sliding groove Y of the screw sleeve body 101 to support the second screw sleeve 102 and prevent the second screw sleeve 102 from deviating during movement, and meanwhile, the connecting strip 202a presses the first spring 202b when moving in the sliding groove Y, when it is required to separate the second screw sleeve 102 from the screw sleeve body 101, the movable strip 203d is moved, the movable strip 203d drives the movable block 203c to move, and then drives the connecting block 203b to slide in the guide groove Z of the inclined plate 203a, the connecting block 203b pulls the guide groove Z to move the inclined plate 203a, drives the clamping block 201a to retract and separate from the clamping groove X, the movable strip 203d drives the movable disc 203e to move when moving, the movable disc 203e presses the second spring 203f, after the clamping block 201a is retracted, the first spring 202b is rebounded to press the connecting strip 202a, the connecting strip 202a drives the second screw sleeve 102 to separate from the screw sleeve body 101, after the separation is completed, the movable strip 203d is loosened, the second spring 203f is rebounded to drive the movable strip 203d to return to the original position, and the clamping block 201a returns to the original position for next use.

[0054] Embodiment 3

[0055] Reference Figures 1-8 For the third embodiment of the utility model, the embodiment is based on the previous two embodiments.

[0056] Specifically, the movable strip 203d is provided with a hinged rod 203g at the top, the hinged rod 203g is hinged with the movable strip 203d, and the hinged rod 203g is fixed with a pushing block 203h at one end.

[0057] The hinged rod 203g can be driven to move by the pushing block 203h outside, the hinged rod 203g is hinged with the inner wall of the second screw sleeve 102, the hinged rod 203g can drive the movable strip 203d to move by moving, so that the clamping block 201a is retracted.

[0058] Specifically, the movable strip 203d is provided with a pushing block 203i at the top, the pushing block 203i is provided with a positioning block 203j at the bottom, and the positioning block 203j is fixed to the inner wall of the second screw sleeve 102.

[0059] When the screw rod rotates to drive the engaged screw sleeve body 101 and the second screw sleeve 102 to rotate, if the rotation speed is too fast, in order to prevent the shift block 203h from moving due to the too fast rotation speed, the centrifugal force generated by the high rotation speed can drive the push block 203i to move, at this time, the push block 203i can move to the top of the movable strip 203d to limit it, so as to prevent the movable strip 203d from driving the clamping block 201a to shrink and cause the clamping to loosen. The positioning block 203j and the push block 203i are slidingly connected at the bottom, and the positioning block 203j can support the push block 203i to prevent the push block 203i from deviating when moving.

[0060] Specifically, the third spring 203k is fixed on one side of the push block 203i, and the third spring 203k is fixed to the inner wall of the second screw sleeve 102.

[0061] When the push block 203i moves, a pulling force can be applied to the third spring 203k. When the screw sleeve body 101 and the second screw sleeve 102 stop rotating or the rotation speed decreases, the centrifugal force will decrease, and then the force of the third spring 203k rebounding can drive the push block 203i to return to the original position.

[0062] In use, the screw sleeve body 101 and the second screw sleeve 102 are respectively sleeved on the extruder screw, and the clamping and installation operation of the two is prepared. The second screw sleeve 102 is moved towards the screw sleeve body 101 for clamping. In this process, since the clamping block 201a is provided with a slope and has elasticity, when the clamping block 201a contacts the clamping groove X opened in the screw sleeve body 101, the clamping groove X will extrude the clamping block 201a to make the clamping block 201a shrink. Continue to push the second screw sleeve 102, and let the clamping block 201a continue to move along the clamping groove X. When the clamping block 201a moves to one end of the clamping groove X, the slope of the clamping groove X is separated from the clamping block 201a, and the extrusion of the clamping block 201a is released. Then, the clamping block 201a relies on the elastic rebound of itself to tightly clamp the clamping groove X. At the same time, the second screw sleeve 102 drives the connecting strip 202a to move into the sliding groove Y of the screw sleeve body 101 to support the second screw sleeve 102 and prevent it from deviating when moving. When the connecting strip 202a moves in the sliding groove Y, it extrudes the first spring 202b. At this time, the two sealing rings 103 fixed on one side of the screw sleeve body 101 and the second screw sleeve 102 will extrude each other, improving the overall sealing performance and preventing the extruder from leaking when conveying materials. In this way, the installation of the screw sleeve body 101 and the second screw sleeve 102 is completed.

[0063] When the second screw sleeve 102 needs to be separated from the screw sleeve body 101, the knob 203h is poked to drive the articulated rod 203g to move, which in turn drives the movable strip 203d to move, and the movement of the movable strip 203d can drive the movable block 203c to move, which in turn drives the connecting block 203b to slide in the guide groove Z of the inclined plane plate 203a, the connecting block 203b pulls the guide groove Z to make the inclined plane plate 203a move, which drives the clamping block 201a to retract and separate from the clamping groove X, the movement of the movable strip 203d drives the movable disc 203e to move, the movable disc 203e exerts a pressing force on the second spring 203f, after the clamping block 201a retracts, the elastic force of the first spring 202b presses the connecting strip 202a, which drives the second screw sleeve 102 to separate from the screw sleeve body 101, after the separation is completed, the knob 203h is released, the elastic force of the second spring 203f drives the movable strip 203d to return to the original position, and the clamping block 201a returns to the original position for next use.

[0064] When the screw rod drives the screw sleeve body 101 and the second screw sleeve 102 to rotate after the clamping, if the rotation speed is too fast, the centrifugal force generated by the high rotation speed drives the push block 203i to move, the push block 203i moves to the top of the movable strip 203d to limit it, thereby preventing the movable strip 203d from driving the clamping block 201a to retract and causing the clamping to loosen, the push block 203i moves to exert a pulling force on the third spring 203k, when the screw sleeve body 101 and the second screw sleeve 102 stop rotating or the rotation speed decreases, the centrifugal force decreases, and the elastic force of the third spring 203k drives the push block 203i to return to the original position.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A detachable extruder screw sleeve, characterized in that: include, The main component (100) includes a threaded sleeve body (101), a second threaded sleeve (102) is provided on the top of the threaded sleeve body (101), and a sealing ring (103) is fixed on the top of the second threaded sleeve (102); A fixing component (200) is disposed on the second threaded sleeve (102) and includes a fixing member (201). The fixing member (201) includes a locking block (201a). The locking block (201a) is disposed on the second threaded sleeve (102). A locking groove (X) corresponding to the locking block (201a) is opened in the threaded sleeve body (101). The locking block (201a) is disposed in the locking groove (X). A support plate (201b) is fixed on the top of the locking block (201a). A positioning post (201c) is fixed on the top of the support plate (201b). The positioning post (201c) is fixed on the second threaded sleeve (102).

2. The detachable extruder sleeve as described in claim 1, characterized in that: The fixing component (200) further includes a movable component (202), which includes a connecting strip (202a). The movable component (202) is fixed to the bottom of the second threaded sleeve (102). The threaded sleeve body (101) has a groove (Y) corresponding to the connecting strip (202a), and the connecting strip (202a) is movably connected to the groove (Y).

3. The detachable extruder screw sleeve as described in claim 2, characterized in that: A first spring (202b) is fixed to the bottom of the connecting strip (202a), and one end of the first spring (202b) is fixed to the inner wall of the groove (Y).

4. The detachable extruder screw sleeve as described in claim 3, characterized in that: The fixing component (200) also includes a movable component (203), which includes a sloping panel (203a) fixed to one side of the locking block (201a), and a connecting block (203b) is provided on one side of the sloping panel (203a).

5. The detachable extruder sleeve as described in claim 4, characterized in that: The inclined panel (203a) has a guide groove (Z) on one side that corresponds to the connecting block (203b), and the connecting block (203b) slides within the guide groove (Z).

6. The detachable extruder sleeve as described in claim 4 or 5, characterized in that: A movable block (203c) is fixed to one side of the connecting block (203b), and a movable strip (203d) is fixed to the top of the movable block (203c).

7. The detachable extruder screw sleeve as described in claim 6, characterized in that: A movable disc (203e) is sleeved on the outside of the movable strip (203d), and a second spring (203f) is fixed on the top of the movable disc (203e). One end of the second spring (203f) is fixed to the inner wall of the positioning post (201c).

8. The detachable extruder screw sleeve as described in claim 7, characterized in that: A hinge rod (203g) is provided at the top of the movable bar (203d), and the hinge rod (203g) is hinged to the movable bar (203d). A lever (203h) is fixed at one end of the hinge rod (203g).

9. The detachable extruder sleeve as described in claim 7 or 8, characterized in that: The top of the movable strip (203d) is provided with a push block (203i), and the bottom of the push block (203i) is provided with a positioning block (203j). The positioning block (203j) is fixed to the inner wall of the second threaded sleeve (102).

10. The detachable extruder screw sleeve as described in claim 9, characterized in that: A third spring (203k) is fixed to one side of the push block (203i), and the third spring (203k) is fixed to the inner wall of the second threaded sleeve (102).

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