Locking type reel heater

Abstract

The utility model discloses a locking type reel heater which comprises a heating pipe, a locking lantern ring and a thermocouple pipe fixedly installed on the heating pipe, a gap groove is formed in the side wall of the heating pipe, a threaded groove is formed in the bottom of the heating pipe, a threaded protrusion is arranged on the inner wall of the locking lantern ring, and the thermocouple pipe is fixedly installed on the locking lantern ring. The locking lantern ring is connected with the heating pipe through the threaded protrusion and the threaded groove, and a gap compensation assembly is arranged in the gap groove. The heating pipe is connected through the locking lantern ring, when the heating pipe is screwed down from one end by the locking lantern ring, due to the fact that the heating pipe has elasticity, the material of the heating pipe is compressed and deforms, the heating pipe tightly wraps an internal pipeline, the compression deformation directly leads to the reduction of the inner diameter of the heating pipe, and the heating pipe is not prone to deformation. Therefore, friction force between the heater and internal parts is enhanced, looseness is effectively prevented, tight connection between the heater and the nozzle body is ensured, and stability and reliability of a hot runner system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a locking drum heater. Background Art

[0002] The hot runner system, a critical component of the injection molding process, is responsible for the efficient, stable delivery and precise distribution of molten plastic. Through a series of carefully designed pipes and nozzles, the system melts the plastic raw material at high temperatures and fills the mold with its fluidity, ensuring the quality and precision of the molded product. Temperature control and maintenance are crucial during the operation of the hot runner system. It not only affects the molten state of the plastic but also directly impacts the product's molding cycle and production efficiency.

[0003] To achieve efficient temperature control in hot runner systems, reel-type heaters were developed. As the core heating element of hot runner systems, reel-type heaters, with their unique structural design, fit tightly against the outer wall of the hot runner system's pipes. Through the principle of electrothermal conversion, they convert electrical energy into thermal energy, providing continuous and stable heat support for the molten plastic. Their high heating efficiency, uniform temperature distribution, and ease of installation and removal provide a strong guarantee for the stable operation of hot runner systems. Reel-type heaters are also often used in conjunction with accessories such as locking sleeves to ensure a tight connection between the heater and the hot runner system, preventing heat loss and temperature fluctuations, and further improving the overall performance of the system.

[0004] The heaters in the prior art have many obvious defects compared to the heaters described: they often lack mass production and cost advantages, making them more expensive in large-scale applications; at the same time, when applied to equipment that is bumpy and vibrating, due to design limitations, these heaters usually have poor fit and are difficult to fit tightly to the heating surface. In order to be used on these devices, conventional heaters may need to adopt a variety of complex fixing methods, but doing so often sacrifices the efficiency of heat transfer, resulting in a significant reduction in the heat transfer effect. Therefore, in scenarios where efficient and strong heat transfer is required, such as heating stamping dies, the heaters in the prior art often find it difficult to meet actual needs, limiting their scope of application and effectiveness. Utility Model Content

[0005] The purpose of the present invention is to provide a locking drum heater to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a locking drum heater, comprising a heating tube, a locking collar and a thermocouple tube fixedly installed on the heating tube, the side wall of the heating tube being provided with a gap groove, the bottom of the heating tube being provided with a threaded groove, the inner wall of the locking collar being provided with a threaded protrusion, the locking collar being connected to the heating tube via the threaded protrusion and the threaded groove, a gap compensation component being provided inside the gap groove, and a connecting component being provided between the two side walls of the gap groove.

[0007] As a further description of the above technical solution: the gap compensation component includes a filling plate, and a locking component is provided between the filling plate and the side walls of the two gap grooves.

[0008] As a further description of the above technical solution: the locking assembly includes a locking slot opened on the side walls on both sides of the gap groove and a through slot opened on the side wall of the filling plate, two slides are slidably installed inside the through slot, and multiple springs are connected between the two slides. The side walls of the two slides are fixedly installed with multiple blocks, and the multiple blocks and the locking slots are adapted to each other. A groove is opened on the side wall of the filling plate, and the groove is connected to the through slot. Two limit plates are fixedly installed on the side wall of the slide, and the two limit plates are slidably connected to the groove.

[0009] As a further description of the above technical solution: one side of the card block is set as a wedge-shaped surface, and a magnetic attraction layer is set on the side of the card block set as the wedge-shaped surface, and the card block is magnetically connected to the card slot through the magnetic attraction layer.

[0010] As a further description of the above technical solution: the connecting assembly includes a connecting groove and two fixing bolts, the connecting groove is threadedly connected to the two fixing bolts, the connecting groove is arranged at the top end of the heating tube, and the two fixing bolts pass through the side wall of the connecting groove and press on the side wall of the heating tube.

[0011] As a further description of the above technical solution: the side wall of the connecting groove is configured as an arc surface.

[0012] As a further description of the above technical solution: the inner wall of the connecting groove and one end of the fixing bolt are both provided with rubber pads.

[0013] As a further description of the above technical solution: two first support plates are fixedly installed on the side wall of the locking ring, and connecting bolts are fixedly installed on the two first support plates. Two second support plates are fixedly installed on the side wall of the heating tube, and threaded holes are provided on the two second support plates. The two connecting bolts are threadedly connected to the two threaded holes.

[0014] The utility model provides a locking drum heater. It has the following beneficial effects: after the heating tube is sleeved on the surface of the pipe, it is connected via a locking collar. When the heating tube is tightened from one end by the locking collar, the elasticity of the heating tube causes the material of the heating tube to be compressed and deformed, thereby tightly wrapping the internal pipe. This compression deformation directly reduces the inner diameter of the heating tube, thereby increasing the friction between the internal components and effectively preventing loosening. This design ensures a tight connection between the heater and the nozzle body, improving the stability and reliability of the hot runner system.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0016] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a locking drum heater proposed in the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the additional connection component and gap compensation component of the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 This is a schematic diagram of the three-dimensional exploded structure between the utility model, the connecting component and the gap compensation component;

[0021] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the gap compensation component of the utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the interior of the connecting groove of the utility model;

[0023] Figure 7 This is a schematic cross-sectional structural diagram of the clamping block of the present invention.

[0024] Legend:

[0025] 1. Heating tube; 2. Gap groove; 3. Thermocouple tube; 4. Threaded groove; 5. Locking collar; 6. Threaded protrusion; 7. Connecting groove; 8. Fixing bolt; 9. Rubber pad; 10. Arc surface; 11. First support plate; 12. Second support plate; 13. Threaded hole; 14. Connecting bolt; 15. Filling plate; 16. Through groove; 17. Recess; 18. Slide plate; 19. Block; 20. Spring; 21. Limiting plate; 22. Wedge surface; 23. Magnetic layer; 24. Slot. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-7 , a locking drum heater, comprising a heating tube 1, a locking collar 5 and a thermocouple tube 3 fixedly mounted on the heating tube 1, the side wall of the heating tube 1 is provided with a gap groove 2, the bottom of the heating tube 1 is provided with a threaded groove 4, the inner wall of the locking collar 5 is provided with a threaded protrusion 6, the locking collar 5 is connected to the heating tube 1 through the threaded protrusion 6 and the threaded groove 4, the interior of the gap groove 2 is provided with a gap compensation component, and a connecting component is provided between the side walls of the two gap grooves 2; after the heating tube 1 is sleeved on the surface of the pipeline, the heating tube 1 is connected through the locking collar 5, and when the heating tube 1 is tightened from one end by the locking collar 5, the material of the heating tube 1 is compressed due to its elasticity. The locking sleeve is located below the heater tube 1. Although the locking sleeve can lock and fix the bottom of the heater tube 1, there is no locking assembly on the top of the heater tube 1. This causes the gap groove 2 to increase from bottom to top during actual use. If the gap groove 2 is maintained in this state for a long time, the heater tube 1 may be damaged or even collapsed due to uneven force or excessive pressure. In addition, the increase in the gap between the locking sleeve and the heater tube 1 may also affect the sealing and stability of the system, thereby affecting the performance of the entire hot runner system. At this time, the gap compensation assembly and the connection assembly can solve this defect. The connection assembly can make the tube walls of the heater tube 1 on both sides of the gap groove 2 more tightly connected, and the gap compensation assembly can fill the gap groove 2, increasing the stability of the heater tube 1.

[0028] As the preferred technical solution of this embodiment, the gap compensation component includes a filling plate 15, and a snap-fit ​​component is arranged between the filling plate 15 and the side walls of the two gap grooves 2; the filling plate 15 can fill the gap of the gap groove 2, and the filling plate 15 can be fixed and installed through the snap-fit ​​component.

[0029] As the preferred technical solution of this embodiment, the locking assembly includes a locking groove 24 provided on the side walls on both sides of the gap groove 2 and a through groove 16 provided on the side wall of the filling plate 15, two slides 18 are slidably installed inside the through groove 16, and a plurality of springs 20 are connected between the two slides 18. The side walls of the two slides 18 are fixedly installed with a plurality of blocks 19, and the plurality of blocks 19 are adapted to the locking groove 24. A groove 17 is provided on the side wall of the filling plate 15, and the groove 17 is connected to the through groove 16. Two limiting plates 21 are fixedly installed on the side wall of the slide 18, and the two limiting plates 21 are slidably connected to the groove 17; the filling plate 15 is inserted between the gap groove 2, and the two slides 18 are bounced outward under the action of the spring 20, so that the blocks 19 on the slide 18 can be inserted into the inside of the locking groove 24, thereby fixing the filling plate 15.

[0030] As a preferred technical solution of this embodiment, one side of the card block 19 is set to a wedge-shaped surface 22, and the side of the card block 19 set to the wedge-shaped surface 22 is provided with a magnetic attraction layer 23, and the card block 19 is magnetically connected to the card slot 24 through the magnetic attraction layer 23; the setting of the wedge-shaped surface 22 can facilitate the card block 19 to be inserted into the card slot 24. When the wedge-shaped surface 22 of the card block 19 contacts the inner wall of the gap groove 2, it automatically slides inward and squeezes the spring 20. When the filling plate 15 is inserted and the card block 19 moves to the position of the card slot 24, the card block 19 automatically pops open and is inserted into the inside of the card slot 24, thereby realizing the connection between the card block 19 and the card slot 24.

[0031] As a preferred technical solution of this embodiment, the connecting assembly includes a connecting groove 7 and two fixing bolts 8, the connecting groove 7 is threadedly connected to the two fixing bolts 8, the connecting groove 7 is arranged at the top end of the heating tube 1, and the two fixing bolts 8 pass through the side walls of the connecting groove 7 and press on the side walls of the heating tube 1; the connecting groove 7 is connected above the gap groove 2, and the connecting groove 7 is fixed to the tube wall of the heating tube 1 by the fixing bolts 8, thereby realizing the connection of the tube walls of the heating tube 1 on both sides of the gap groove 2.

[0032] As a preferred technical solution of this embodiment, the side wall of the connecting groove 7 is set as an arc surface 10; since the connecting groove 7 is stuck above the heating tube 1, the setting of the arc surface 10 makes it easier for the connecting groove 7 to fit on the surface of the tube wall of the heating tube 1.

[0033] As a preferred technical solution of this embodiment, a rubber pad 9 is provided on the inner wall of the connecting groove 7 and one end of the fixing bolt 8; the rubber pad 9 is relatively soft, so that when the connecting groove 7, the fixing bolt 8 and the wall of the heating tube 1 come into contact, the heating tube 1 can be protected to prevent wear on the wall.

[0034] As a preferred technical solution of this embodiment, two first support plates 11 are fixedly installed on the side wall of the locking collar 5, and connecting bolts 14 are fixedly installed on the two first support plates 11. Two second support plates 12 are fixedly installed on the side wall of the heating tube 1, and threaded holes 13 are opened on the two second support plates 12. The two connecting bolts 14 are threadedly connected to the two threaded holes 13; during long-term use, loosening between the locking collar 5 and the threaded groove 4 of the heating tube 1 is prevented, and the connection between the two second support plates 12 and the two first support plates 11 strengthens the connection between the locking collar 5 and the heating tube 1.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking drum heater, comprising a heating tube (1), a locking collar (5) and a thermocouple tube (3) fixedly mounted on the heating tube (1), characterized in that: The side wall of the heating tube (1) is provided with a gap groove (2), the bottom of the heating tube (1) is provided with a thread groove (4), the inner wall of the locking collar (5) is provided with a threaded protrusion (6), the locking collar (5) is connected to the heating tube (1) via the threaded protrusion (6) and the threaded groove (4), a gap compensation component is provided inside the gap groove (2), and a connecting component is provided between the side walls of the two gap grooves (2).

2. A locking drum heater according to claim 1, characterized in that: The gap compensation component comprises a filling plate (15), and a snap-fit ​​component is provided between the filling plate (15) and the side walls of the two gap slots (2).

3. A locking drum heater according to claim 2, characterized in that: The engaging assembly comprises a card slot (24) provided on the side walls on both sides of the gap slot (2) and a through slot (16) provided on the side wall of the filling plate (15); two slide plates (18) are slidably installed inside the through slot (16); a plurality of springs (20) are connected between the two slide plates (18); a plurality of card blocks (19) are fixedly installed on the side walls of the two slide plates (18); the plurality of card blocks (19) and the card slot (24) are adapted to each other; a groove (17) is provided on one side wall of the filling plate (15); the groove (17) is connected to the through slot (16); two limit plates (21) are fixedly installed on the side wall of the slide plate (18); the two limit plates (21) are slidably connected to the groove (17).

4. The locking drum heater according to claim 3, characterized in that: One side of the clamping block (19) is configured as a wedge-shaped surface (22), and a magnetic attraction layer (23) is provided on one side of the clamping block (19) configured as the wedge-shaped surface (22). The clamping block (19) is magnetically connected to the clamping slot (24) via the magnetic attraction layer (23).

5. The locking drum heater according to claim 1, characterized in that: The connecting assembly comprises a connecting groove (7) and two fixing bolts (8), wherein the connecting groove (7) is threadedly connected to the two fixing bolts (8), the connecting groove (7) is arranged at the top end of the heating tube (1), and the two fixing bolts (8) penetrate the side wall of the connecting groove (7) and press on the side wall of the heating tube (1).

6. The locking drum heater according to claim 5, characterized in that: The side wall of the connecting groove (7) is configured as an arc-shaped surface (10).

7. The locking drum heater according to claim 5, characterized in that: The inner wall of the connecting groove (7) and one end of the fixing bolt (8) are both provided with a rubber pad (9).

8. The locking drum heater according to claim 1, characterized in that: Two first support plates (11) are fixedly mounted on the side wall of the locking collar (5), and connecting bolts (14) are fixedly mounted on the two first support plates (11). Two second support plates (12) are fixedly mounted on the side wall of the heating tube (1), and threaded holes (13) are provided on the two second support plates (12). The two connecting bolts (14) are threadedly connected to the two threaded holes (13).

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