Multipurpose heat shrink tube extruder
By introducing a stirring shaft and its linkage mechanism into the heat shrink tubing extruder, the problem of feed inlet blockage was solved, achieving uniform mixing of raw materials and improving product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-31
AI Technical Summary
Existing heat shrink tubing extruders are prone to feed port blockage during the extrusion process, resulting in uneven material distribution and inconsistent product quality.
The design employs a combination of two stirring shafts and a linkage mechanism. A drive motor drives a bevel gear transmission to achieve the circular motion and rotation of the stirring shafts, preventing blockage at the feed inlet.
It effectively prevents the feed inlet from clogging, ensures uniform mixing of raw materials, and improves the consistency of product quality.
Smart Images

Figure CN224060409U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extruder technology, and more specifically, to a multi-purpose heat shrink tubing extruder. Background Technology
[0002] Heat shrink tubing is a specially made polyolefin heat shrink sleeve. It has excellent flame retardant and insulation properties, is very soft and elastic, has a low shrinkage temperature, and shrinks quickly. It can be widely used for wire connection, wire end treatment, solder joint protection, wire harness marking, and insulation protection of resistors and capacitors. However, heat shrink tubing needs to be processed by an extruder during its production process.
[0003] For example, patent CN216804349U discloses a heat shrink tubing extrusion mechanism. This mechanism adjusts the falling speed of the raw material in the raw material barrel using an adjusting element, mixing the raw materials in a certain proportion to avoid mixing them during granulation. It can be mixed according to the preparation requirements of different tubing components, avoiding waste caused by excessive mixing. The V-groove and sliding groove cause the pushing cylinder to reciprocate relative to the receiving shell, pushing the raw material at the discharge port and preventing blockage. However, during the extrusion process, the feed port is prone to blockage, resulting in inconsistent material extrusion and varying product quality.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a multi-purpose heat shrink tubing extruder to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A multi-purpose heat shrink tubing extruder includes an extruder body and a feed inlet. The feed inlet is located at the top of the extruder body. A stirring shaft one and a stirring shaft two are symmetrically arranged inside the feed inlet to prevent raw material blockage. A linkage mechanism for driving the stirring shaft one and the stirring shaft two is provided at the top of the extruder body.
[0008] The linkage mechanism includes a support block located at the top of the extruder body. A horizontally arranged crossbeam is provided on the top side of the support block and above the feed inlet. The bottom end of the crossbeam is symmetrically provided with driven gear one and driven gear two, which are connected to the stirring shaft one and the stirring shaft two respectively.
[0009] Preferably, the bottom of the crossbeam is provided with a movable plate that is movably connected to the top of the first stirring shaft and the second stirring shaft, and the top of the movable plate is provided with a fixed shaft that is movably connected to the crossbeam.
[0010] Preferably, a bevel gear one is sleeved on the fixed shaft, and a bevel gear two that meshes with the top side of the bevel gear one is provided, and a drive motor that is connected to the crossbeam is provided at the end of the bevel gear two.
[0011] Preferably, internal gear rings are fitted on the driven gear one and the driven gear two, and the internal gear rings are movably connected to the crossbeam through a connecting column.
[0012] Preferably, the internal teeth on the internal gear ring mesh with the driven gear one and the driven gear two, and the stirring shaft one and the stirring shaft two are movably connected to the movable plate through bearings.
[0013] Preferably, the outer walls of the first stirring shaft and the second stirring shaft are provided with blades, and the blades have a spiral structure.
[0014] The beneficial effects of this utility model are as follows: through the coordinated design of stirring shaft one and stirring shaft two with the linkage mechanism, stirring shaft one and stirring shaft two rotate in a circular motion under the drive of the linkage mechanism, stirring and clearing the raw materials in the feed inlet, and preventing the feed inlet from being blocked by raw materials. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.
[0016] Figure 1 This is a schematic diagram of the structure of a multi-purpose heat shrink tubing extruder according to an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the linkage mechanism in a multi-purpose heat shrink tubing extruder according to an embodiment of the present utility model;
[0018] Figure 3 This is a schematic diagram of the internal toothed ring in a multi-purpose heat shrink tubing extruder according to an embodiment of the present invention.
[0019] In the picture:
[0020] 1. Extruder body; 2. Feed inlet; 3. Agitator shaft one; 4. Agitator shaft two; 5. Support block; 6. Crossbeam; 7. Driven gear one; 8. Driven gear two; 9. Movable plate; 10. Fixed shaft; 11. Bevel gear one; 12. Bevel gear two; 13. Drive motor; 14. Internal gear ring; 15. Connecting column; 16. Blade. Detailed Implementation
[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0022] According to an embodiment of the present invention, a multi-purpose heat shrink tubing extruder is provided.
[0023] Example 1:
[0024] like Figure 1-3 As shown, the multi-purpose heat shrink tubing extruder according to an embodiment of the present utility model includes an extruder body 1 and a feed inlet 2. The feed inlet 2 is located at the top of the extruder body 1. A stirring shaft 3 and a stirring shaft 4 for preventing raw material blockage are symmetrically arranged inside the feed inlet 2. A linkage mechanism for driving the stirring shaft 3 and the stirring shaft 4 is provided at the top of the extruder body 1.
[0025] The linkage mechanism includes a support block 5 located at the top of the extruder body 1. A horizontally arranged crossbeam 6 is provided on the top side of the support block 5 and above the feed inlet 2. The bottom end of the crossbeam 6 is symmetrically provided with driven gear 7 and driven gear 8, which are connected to the stirring shaft 3 and the stirring shaft 4 respectively.
[0026] Example 2:
[0027] like Figure 1-3 As shown, the bottom of the crossbeam 6 is provided with a movable plate 9 that is movably connected to the top of the stirring shaft 3 and the stirring shaft 4. The top of the movable plate 9 is provided with a fixed shaft 10 that is movably connected to the crossbeam 6. A bevel gear 11 is sleeved on the fixed shaft 10. A bevel gear 12 that meshes with the top side of the bevel gear 11 is provided. The end of the bevel gear 12 is provided with a drive motor 13 that is connected to the crossbeam 6. An internal gear ring 14 is sleeved on the driven gear 7 and the driven gear 8. The internal gear ring 14 is movably connected to the crossbeam 6 through a connecting column 15.
[0028] Example 3:
[0029] like Figure 1-3As shown, the internal teeth on the internal gear ring 14 mesh with the driven gear 7 and the driven gear 8, and the stirring shaft 3 and the stirring shaft 4 are movably connected to the movable plate 9 through bearings. The outer walls of the stirring shaft 3 and the stirring shaft 4 are provided with blades 16, and the blades 16 have a spiral structure.
[0030] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.
[0031] In practical applications, raw materials enter the extruder body 1 through the feed inlet 2. The drive motor 13 is started to drive the bevel gear 12 to rotate. The bevel gear 12 meshes with the bevel gear 11 to drive the fixed shaft 10 to rotate. The fixed shaft 10 drives the movable plate 9 to rotate. The movable plate 9 drives the stirring shaft 3 and the stirring shaft 4 to make circular motion. During the circular motion, the driven gears 7 and 8 of the stirring shaft 3 and the stirring shaft 4 mesh with the internal teeth of the internal gear ring 14, so that the driven gears 7 and 8 drive the stirring shaft 3 and the stirring shaft 4 to rotate. Thus, the stirring shaft 3 and the stirring shaft 4 rotate on their own axis while making circular motion, so as to circumferentially stir and clear the raw materials in the feed inlet 2 and prevent the feed inlet 2 from being blocked by raw materials.
[0032] In summary, by means of the above-mentioned technical solution of this utility model, through the cooperative design of stirring shaft 3 and stirring shaft 4 with the linkage mechanism, stirring shaft 3 and stirring shaft 4 rotate in a circular motion under the drive of the linkage mechanism, stirring and clearing the raw materials in the feed inlet 2, and preventing the feed inlet 2 from being blocked by the raw materials.
[0033] 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. A multi-purpose heat shrink tube extruder characterized by, The utility model provides an extruder, which comprises an extruder body (1) and a feeding port (2) located at the top of the extruder body (1), wherein a stirring shaft one (3) and a stirring shaft two (4) for preventing raw materials from being blocked are symmetrically arranged in the feeding port (2), and a linkage mechanism for driving the stirring shaft one (3) and the stirring shaft two (4) is arranged at the top of the extruder body (1). The linkage mechanism comprises a support block (5) located at the top of the extruder body (1), wherein a cross beam (6) is arranged at the top of one side of the support block (5) and above the feeding port (2), and a driven gear one (7) and a driven gear two (8) corresponding to the stirring shaft one (3) and the stirring shaft two (4) are symmetrically arranged at the bottom end of the cross beam (6).
2. A multi-purpose heat shrink tube extruder as claimed in claim 1, wherein, An activity plate (9) is arranged at the bottom of the cross beam (6) and movably connected to the top of the stirring shaft one (3) and the stirring shaft two (4), wherein a fixed shaft (10) movably connected to the cross beam (6) is arranged at the top of the activity plate (9).
3. A multi-purpose heat shrink tube extruder as claimed in claim 2, wherein, A bevel gear one (11) is sleeved on the fixed shaft (10), wherein a bevel gear two (12) meshing with the bevel gear one (11) is arranged at the top side of the bevel gear one (11), and a driving motor (13) connected to the cross beam (6) is arranged at the end of the bevel gear two (12).
4. A multi-purpose heat shrink tube extruder as claimed in claim 3, wherein, An internal gear ring (14) is sleeved on the driven gear one (7) and the driven gear two (8), and the internal gear ring (14) is movably connected to the cross beam (6) through a connecting column (15).
5. A multi-purpose heat shrink tube extruder as claimed in claim 4, wherein, The internal gear of the internal gear ring (14) is meshed with the driven gear one (7) and the driven gear two (8), and the stirring shaft one (3) and the stirring shaft two (4) are movably connected to the activity plate (9) through bearings.
6. A multi-purpose heat shrink tube extruder as claimed in claim 5, wherein, The outer wall of the stirring shaft one (3) and the stirring shaft two (4) is provided with a blade (16) in a spiral structure.
Citation Information
Patent Citations
Heat shrink tube extrusion mechanism
CN216804349U