A copper jacket heater with split hot runner
By designing a copper-jacketed heater with a split hot runner, and utilizing components such as slots, inserts, and locking posts, multiple heaters can be quickly connected and separated, solving the problem of limited heating area of a single heater and meeting the heating requirements and temperature control of long pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU HANMAO HOT RUNNER TECHNOLOGY CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-04
AI Technical Summary
The heating area of a single copper-jacketed heater is limited, which cannot meet the heating requirements of workpieces such as long pipes, and it is also impossible to achieve temperature control in different areas.
Design a copper bushing heater with a split hot runner. Through a combination structure of slots, inserts, locking pins, circular blocks, springs, sliding sleeves and threaded sleeves, multiple copper bushing heaters can be quickly connected and separated to adapt to larger heating areas and complex heating requirements.
It enables the rapid connection and disconnection of multiple copper-jacketed heaters, meeting the heating requirements of workpieces such as long pipes and adapting to temperature control in different areas.
Smart Images

Figure CN224596626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of copper sleeve heater technology, and in particular to a copper sleeve heater with a split hot runner. Background Technology
[0002] A copper-jacketed heater is an industrial-grade heating device that uses copper as its outer shell and integrates heating elements inside. It transfers heat through conduction, radiation, or convection. Its core features are the high thermal conductivity, good corrosion resistance, and mechanical strength of copper. It is suitable for scenarios with high requirements for heating efficiency and temperature control accuracy and is widely used in industrial production, equipment matching, and some civilian fields.
[0003] The heating area of a single copper-jacketed heater is limited by its own size, which cannot meet the heating requirements of workpieces such as long pipes. Furthermore, different areas of long pipes require "different temperature control" (e.g., in a plastic extruder: the feeding section needs a low temperature to prevent the raw material from melting and clumping, while the melting section needs a high temperature to plasticize the raw material). A single heater cannot meet the requirements of these zones. Therefore, it is necessary to design a copper-jacketed heater with a split hot runner that allows multiple copper-jacketed heaters to be connected, in order to adapt to scenarios with larger heating areas and more complex heating requirements. Utility Model Content
[0004] The purpose of this utility model is to provide a copper jacket heater with a split hot runner to solve the above problems.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A copper-jacketed heater with a split hot runner includes a base block. A copper sleeve is connected to the inner wall of the base block. A heating wire is installed inside the copper sleeve. A docking assembly is mounted on the copper sleeve. The docking assembly includes a slot, a plug, a locking pin, a circular block, a spring, a sliding sleeve, and a threaded sleeve. A slot is formed at one end of the copper sleeve. The plug is fixedly connected to the end of the copper sleeve away from the slot. The locking pin is slidably connected to the inner wall of the slot. A locking hole adapted to the locking pin is formed on the outer wall of the plug. A circular block is fixedly connected to the top of the locking pin. The circular block and the copper sleeve are connected to each other by a spring. A sliding sleeve is slidably connected to the outer wall of the copper sleeve. One end of the sliding sleeve is rotatably connected to a threaded sleeve, which is threadedly connected to the outer wall of the copper sleeve.
[0006] Preferably, the end of the sliding sleeve away from the threaded sleeve is flared, and the end of the circular block away from the retaining post is rounded.
[0007] Preferably, a slider is fixedly connected to the inner wall of the sliding sleeve, and a groove is formed on the outer wall of the copper sleeve, with the slider slidably connected to the inner wall of the groove.
[0008] Preferably, the outer wall of the copper sleeve has a countersunk hole, the cross-section of which is the same as the cross-section of the circular block, and the depth of which is the same as the thickness of the circular block.
[0009] Preferably, a limiting block is fixedly connected to the inner wall of the slot, the cross-section of the limiting block is T-shaped, a limiting groove is formed on the inner wall of the insertion block, and the limiting block is slidably connected to the inner wall of the limiting groove.
[0010] Preferably, the outer wall of the threaded sleeve is fixedly connected with a protrusion.
[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this application, when heating a long pipe, the operator first inserts the insert block into the slot, then rotates the threaded sleeve, which moves the sliding sleeve, which in turn presses the circular block, which in turn moves the locking pin, which then inserts into the locking hole. This allows different copper sleeves to be connected and fixed, enabling the copper sleeve heaters to be quickly connected to adapt to scenarios with larger heating areas and more complex heating requirements. Attached Figure Description
[0012] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A cross-sectional view of the base block structure provided according to an embodiment of the present invention is shown; Figure 3 An exploded view of the docking assembly structure provided according to an embodiment of the present invention is shown; Figure 4 The present invention provides an embodiment of the present invention. Figure 3 Enlarged view of the structure of part A.
[0013] Legend: 1. Base block; 2. Copper sleeve; 3. Heating wire; 4. Slot; 5. Insert block; 6. Locking post; 7. Circular block; 8. Spring; 9. Sliding sleeve; 10. Threaded sleeve; 11. Sliding block; 12. Sliding groove; 13. Countersunk hole; 14. Limiting block; 15. Limiting groove; 16. Protrusion. Detailed Implementation
[0014] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-4 This utility model provides a technical solution: like Figure 1-4 As shown, a copper-shrouded heater with a split hot runner includes a base block 1. A copper sleeve 2 is connected to the inner wall of the base block 1. A heating wire 3 for heating is installed inside the copper sleeve 2. A docking assembly is installed on the copper sleeve 2, including a slot 4, a plug 5, a locking post 6, a circular block 7, a spring 8, a sliding sleeve 9, and a threaded sleeve 10. A slot 4 is formed at one end of the copper sleeve 2. The end of the copper sleeve 2 away from the slot 4 is fixedly connected to the plug 5 for insertion into the slot 4. A locking post 9 is slidably connected to the inner wall of the slot 4. The outer wall of the post 6 and the insert 5 has a locking hole that matches the post 6. The top of the post 6 is fixedly connected to the circular block 7. When the circular block 7 is squeezed, it will drive the post 6 to move. The circular block 7 and the copper sleeve 2 are connected to each other by a spring 8. The outer wall of the copper sleeve 2 is slidably connected to the sliding sleeve 9. After the sliding sleeve 9 moves, it will squeeze the circular block 7. One end of the sliding sleeve 9 is rotatably connected to the threaded sleeve 10. The threaded sleeve 10 is threadedly connected to the outer wall of the copper sleeve 2. After the threaded sleeve 10 rotates, it will drive the sliding sleeve 9 to move.
[0016] like Figure 3 As shown, the end of the sliding sleeve 9 away from the threaded sleeve 10 is flared, and the end of the circular block 7 away from the retaining post 6 is rounded. The flared sliding sleeve 9 will not jam when pressing the rounded circular block 7. A slider 11 is fixedly connected to the inner wall of the sliding sleeve 9, and a groove 12 is formed on the outer wall of the copper sleeve 2. The slider 11 is slidably connected to the inner wall of the groove 12. The slider 11, in conjunction with the groove 12, can limit the movement of the sliding sleeve 9, preventing it from rotating and allowing it to move horizontally. This prevents the sliding sleeve 9 from pushing the copper sleeve 2 to rotate through friction. Figure 4 As shown, the outer wall of the copper sleeve 2 has a countersunk hole 13. The cross-section of the countersunk hole 13 is the same as the cross-section of the circular block 7, and the depth of the countersunk hole 13 is the same as the thickness of the circular block 7. After the circular block 7 is inserted into the countersunk hole, it will not obstruct the movement of the sliding sleeve 9. At the same time, the sliding sleeve 9 will also limit the circular block 7 so that the circular block 7 will not move out of the countersunk hole. The inner wall of the slot 4 is fixedly connected to a limiting block 14. The cross-section of the limiting block 14 is T-shaped. The inner wall of the insert 5 has a limiting groove 15. The limiting block 14 and the limiting groove 15 can make the insert 5 slide inside the slot 4. In this way, the locking hole on the insert 5 will always be aligned with the locking post 6. The limiting block 14 is slidably connected to the inner wall of the limiting groove 15. The outer wall of the threaded sleeve 10 is fixedly connected to a protrusion 16. The protrusion 16 can facilitate the operator to rotate the threaded sleeve 10.
[0017] Working Principle: In this embodiment, the copper bushing heater with a split hot runner is used by first aligning the limiting block 14 with the limiting groove 15, then inserting the insert 5 into the slot 4. Next, the operator grasps the protrusion 16 and pushes it to rotate the threaded sleeve 10. The threaded sleeve 10 then moves the sliding sleeve 9, causing the flared end of the sliding sleeve 9 to press against the circular block 7. This pressing action moves the locking pin 6, which then inserts into the locking hole. The insert 5 is then fixed inside the slot 4, allowing different copper bushings 2 to be connected. The copper sleeve heaters can be connected and fixed, allowing for quick connection to adapt to scenarios with larger heating areas and more complex heating requirements. After the workpiece is heated, the operator rotates the threaded sleeve 10 through the protrusion 16. The threaded sleeve 10 will drive the sliding sleeve 9 away from the circular block 7, and the circular block 7 will lose the compression of the threaded sleeve 10. The spring 8 will push the circular block 7 out of the countersunk hole, and the circular block 7 will drive the locking post 6 out of the locking hole. In this way, the insertion block 5 will lose its limit, and the operator can remove the insertion block 5 from the slot 4, thereby enabling the different copper sleeves 2 to be quickly separated.
[0018] In summary, when heating long pipes, the operator first inserts the insert 5 into the slot 4, then rotates the threaded sleeve 10, which moves the sliding sleeve 9. The sliding sleeve 9 then presses the circular block 7, which in turn moves the locking pin 6. The locking pin 6 then inserts into the locking hole, thus connecting and fixing different copper sleeves 2. This allows for quick connection between copper sleeve 2 heaters to adapt to scenarios with larger heating areas and more complex heating requirements.
[0019] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A copper-jacketed heater with a split-type hot runner, comprising a base block (1), characterized in that, The inner wall of the base block (1) is connected to a copper sleeve (2). A heating wire (3) is installed inside the copper sleeve (2). A docking assembly is installed on the copper sleeve (2). The docking assembly includes a slot (4), a plug (5), a locking post (6), a circular block (7), a spring (8), a sliding sleeve (9), and a threaded sleeve (10). A slot (4) is opened at one end of the copper sleeve (2). The plug (5) is fixedly connected to the end of the copper sleeve (2) away from the slot (4). The inner wall of the groove (4) is slidably connected to the locking post (6). The outer wall of the insert block (5) is provided with a locking hole that matches the locking post (6). The top of the locking post (6) is fixedly connected to the circular block (7). The circular block (7) and the copper sleeve (2) are connected to each other by a spring (8). The outer wall of the copper sleeve (2) is slidably connected to the sliding sleeve (9). One end of the sliding sleeve (9) is rotatably connected to the threaded sleeve (10). The threaded sleeve (10) is threadedly connected to the outer wall of the copper sleeve (2).
2. A copper-jacketed heater with a split-type hot runner according to claim 1, characterized in that, The end of the sliding sleeve (9) away from the threaded sleeve (10) is flared, and the end of the circular block (7) away from the locking post (6) is rounded.
3. A copper-jacketed heater with a split-type hot runner according to claim 2, characterized in that, The inner wall of the sliding sleeve (9) is fixedly connected to a slider (11), and the outer wall of the copper sleeve (2) is provided with a groove (12). The slider (11) is slidably connected to the inner wall of the groove (12).
4. A copper-jacketed heater with a split-type hot runner according to claim 3, characterized in that, The outer wall of the copper sleeve (2) is provided with a countersunk hole (13). The cross-section of the countersunk hole (13) is the same as the cross-section of the circular block (7), and the depth of the countersunk hole (13) is the same as the thickness of the circular block (7).
5. A copper-jacketed heater with a split-type hot runner according to claim 1, characterized in that, The inner wall of the slot (4) is fixedly connected to a limiting block (14), the cross-section of the limiting block (14) is T-shaped, the inner wall of the insert (5) is provided with a limiting groove (15), and the limiting block (14) is slidably connected to the inner wall of the limiting groove (15).
6. A copper-jacketed heater with a split-type hot runner according to claim 2, characterized in that, The outer wall of the threaded sleeve (10) is fixedly connected with a protrusion (16).