Improved spring heater

Abstract

The utility model relates to the technical field of spring heaters, and discloses an improved spring heater which comprises a heater body, a shell, a null line and a live wire, the shell is composed of a front shell and a rear shell, the front shell and the rear shell are fixed together through a bolt, a take-up assembly for controlling the null line and the live wire is arranged in the rear shell, and the null line and the live wire are arranged in the heater body. According to the improved spring heater, through the arrangement of the take-up assembly, when the improved spring heater is used, an electric wire composed of a zero line and a live wire is pulled, the zero line and the live wire can push the abutting rod to move upwards, the zero line and the live wire are released, normal use of workers is not affected, and when the improved spring heater is not used, the abutting rod can move downwards under the action of a rubber rope; the zero line and the live line are pulled to retract into the shell, so that the zero line and the live line are stored, and the situation that when the heater is not used, a wire composed of the zero line and the live line is dragged, the position connected with the heater body is damaged, and use is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of spring heater technology, specifically to an improved spring heater. Background Technology

[0002] Spring heaters are commonly used in the plastics industry for nozzle heating in hot runner systems, and also in the packaging industry. Existing spring heaters are generally fitted onto the nozzle during use.

[0003] Current spring heaters are powered by connecting a neutral wire and a live wire to each end. Due to resistance, the current generates heat in the heater, thus achieving the heating effect. Currently, the neutral and live wires are usually connected to the two ends of the spring heater by welding. For ease of connection, the wires are usually of a certain length, which means that when not in use, the wires are exposed. This makes it possible for workers to accidentally drag the wires, causing the neutral and live wires to break off at the connection point with the spring heater, affecting normal use. Therefore, we propose an improved spring heater. Utility Model Content

[0004] The purpose of this invention is to provide an improved spring heater to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved spring heater, comprising a heater body, a housing, a neutral wire, and a live wire. The housing consists of a front shell and a rear shell, which are fixed together by bolts. The rear shell contains a wire take-up assembly for controlling the neutral and live wires. The neutral and live wires are connected to both ends of the heater body via connecting devices. The wire take-up assembly includes:

[0006] The fixing clamp is used to fix the neutral wire and the live wire inside the rear housing;

[0007] The contact rod is used in conjunction with the rubber cord to control the neutral and live wires to be retracted inside the housing when not being pulled.

[0008] Preferably, the fixing clamp is fixed to the inner wall of the rear shell, the abutment rod is slidably mounted on the inner wall of the rear shell, a guide rod is fixed to the inner wall of the rear shell, a rubber rope is fixed to the bottom of the abutment rod, the end of the rubber rope away from the abutment rod is fixed to the top of the fixing plate, the fixing plate is fixed to the inner wall of the rear shell, and the cable take-up assembly is provided in two sets. The two sets of fixing clamps respectively fix the neutral wire and the live wire to the inner wall of the rear shell, the two sets of guide rods respectively guide the neutral wire and the live wire, and the two sets of abutment rods respectively... The neutral and live wires are connected by a contact rod. During use, pulling the wire consisting of the neutral and live wires will push the contact rod upwards, releasing the neutral and live wires without affecting normal operation. When not in use, the contact rod can be moved downwards by the rubber rope, pulling the neutral and live wires back into the housing. This prevents the wires from being dragged and damaging the connection point to the heater body, thus avoiding any impact on operation.

[0009] Preferably, the connecting device includes a fixing frame fixed to the inner wall of the rear shell. The fixing frame has a sliding groove, and a ceramic seat is slidably installed on the inner side of the sliding groove. The neutral wire passes through the ceramic seat and is fixed to the ceramic seat. The neutral wire is fixed to the heater body by a flexible metal braided strip, which is made of stainless steel wire. The flexible metal braided strip fixes the neutral wire to the heater body and allows axial displacement within the sliding groove via the ceramic seat. This effectively avoids the problem of cracking at the connection point between the heater body end and the neutral and live wires when the heater body is connected to the heater body end by welding. This prevents the heater body from expanding due to heating, causing changes in the spring helical spacing and affecting the service life.

[0010] Preferably, the connecting device is provided in two sets, one set of the connecting device is connected to the neutral wire and one end of the heater body, and the other set of the connecting device is connected to the live wire and the other end of the heater body.

[0011] Compared with the prior art, the present invention provides an improved spring heater, which has the following beneficial effects:

[0012] 1. This improved spring heater, through its retractable assembly, allows for easy release of the neutral and live wires during use. By pulling the wires, the neutral and live wires push the contact rod upwards, allowing for uninterrupted operation. When not in use, the contact rod moves downwards under the influence of the rubber rope, retracting the neutral and live wires into the housing. This prevents the wires from being dragged and potentially damaging the connection point to the heater body, thus ensuring proper functioning.

[0013] 2. This improved spring heater, through the set connecting device, allows the ceramic seat to move axially within the slide groove. This effectively avoids the problem that when the neutral and live wires are connected to the heater body end by welding, the heater body expands due to heating, causing changes in the spring helical spacing and cracking at the connection point between the heater body end and the neutral and live wires, thus affecting the service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0015] Figure 2 This is a front view of the structure of the present invention with the front shell removed;

[0016] Figure 3 This is a partial side view of the structure of the present invention with the front shell removed;

[0017] Figure 4 This is a schematic diagram of the connection structure of the heater body, neutral wire, live wire, winding assembly, and connecting device of this utility model;

[0018] Figure 5 This utility model Figure 4 A schematic diagram of the enlarged structure of A in the middle;

[0019] Figure 6 This utility model Figure 4 Schematic diagram of the enlarged structure of B.

[0020] In the diagram: 1. Heater body; 2. Housing; 21. Front housing; 22. Rear housing; 3. Coil winding assembly; 31. Fixing clamp; 32. Abutment rod; 33. Rubber rope; 34. Guide rod; 35. Fixing plate; 4. Connecting device; 41. Fixing frame; 42. Slide groove; 43. Ceramic seat; 44. Flexible metal braided belt; 5. Neutral wire; 6. Live wire. Detailed Implementation

[0021] like Figures 1-6 As shown, this utility model provides a technical solution: an improved spring heater, including a heater body 1, a housing 2, a neutral wire 5 and a live wire 6. The housing 2 is composed of a front housing 21 and a rear housing 22, which are fixed together by bolts. The rear housing 22 is provided with a winding assembly 3 for controlling the neutral wire 5 and the live wire 6. The neutral wire 5 and the live wire 6 are connected to both ends of the heater body 1 by a connecting device 4. The winding assembly 3 includes: a fixing hoop 31, a contact rod 32, a rubber rope 33, a guide rod 34, and a fixing plate 35.

[0022] The fixing clamp 31 is fixed to the inner wall of the rear shell 22. The abutment rod 32 is slidably installed on the inner wall of the rear shell 22. A guide rod 34 is fixed on the inner wall of the rear shell 22. A rubber rope 33 is fixed to the bottom of the abutment rod 32. The end of the rubber rope 33 away from the abutment rod 32 is fixed to the top of the fixing plate 35. The fixing plate 35 is fixed to the inner wall of the rear shell 22. The cable take-up assembly 3 is provided with two sets. The two sets of fixing clamps 31 fix the neutral wire 5 and the live wire 6 to the inner wall of the rear shell 22 respectively. The two sets of guide rods 34 guide the neutral wire 5 and the live wire 6 respectively. The two sets of abutment rods 32 respectively guide the neutral wire 5 and the live wire 6. The neutral wire 5 and the live wire 6 are in contact. During use, by pulling the wire consisting of the neutral wire 5 and the live wire 6, the neutral wire 5 and the live wire 6 can push the contact rod 32 upward, thereby releasing the neutral wire 5 and the live wire 6 without affecting the normal use of the operator. When not in use, the contact rod 32 can be moved downward under the action of the rubber rope 33, pulling the neutral wire 5 and the live wire 6 into the housing 2, thereby storing the neutral wire 5 and the live wire 6 and preventing the wire consisting of the neutral wire 5 and the live wire 6 from being dragged when not in use, which could damage the connection point with the heater body 1 and affect the use.

[0023] The connecting device 4 includes a fixing frame 41, which is fixed to the inner wall of the rear shell 22. The fixing frame 41 has a sliding groove 42, and a ceramic seat 43 is slidably installed on the inner side of the sliding groove 42. The neutral wire 5 passes through the ceramic seat 43 and is fixed to the ceramic seat 43. The neutral wire 5 is fixed to the heater body 1 by a flexible metal braided strip 44, which is made of stainless steel wire. The flexible metal braided strip 44 fixes the neutral wire 5 to the heater body 1 and can move axially within the sliding groove 42 through the ceramic seat 43. This can effectively avoid the situation where the heater body 1 expands due to heating, causing the spring helical spacing to change, and cracking occurs at the connection point between the heater body 1 and the neutral wire 5 and the live wire 6 when the neutral wire 5 and the live wire 6 are connected to the end of the heater body 1 by welding, which affects the service life.

[0024] The connecting device 4 is provided in two sets. One set of connecting device 4 is connected to the neutral wire 5 and one end of the heater body 1, and the other set of connecting device 4 is connected to the live wire 6 and the other end of the heater body 1.

[0025] In this utility model, when in use, the fixing bolts that fix the rear shell 22 and the front shell 21 are removed, the heater body 1 is placed inside the rear shell 22, and the neutral wire 5 and the live wire 6 are connected to the two ends of the heater body 1 by using flexible metal braided straps 44 respectively. The heater body 1 is then fitted onto the nozzle, and the front shell 21 and the rear shell 22 are fixed with bolts. When in use, the heater body 1 heats up by energizing the wire composed of the neutral wire 5 and the live wire 6, which in turn heats the nozzle. The closed shell 2 effectively prevents heat loss.

[0026] When in use, by pulling the wire consisting of neutral wire 5 and live wire 6, the neutral wire 5 and live wire 6 can push the contact rod 32 upward, thereby releasing the neutral wire 5 and live wire 6 without affecting the normal use of the operator. When not in use, the contact rod 32 can be moved downward under the action of the rubber rope 33, pulling the neutral wire 5 and live wire 6 into the housing 2, thereby storing the neutral wire 5 and live wire 6 and preventing the wire consisting of neutral wire 5 and live wire 6 from being dragged when not in use, which could damage the connection point with the heater body 1 and affect its use.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An improved spring heater, comprising a heater body (1), a housing (2), a neutral wire (5), and a live wire (6), characterized in that: The housing (2) consists of a front housing (21) and a rear housing (22), which are fixed together by bolts. The rear housing (22) contains a winding assembly (3) for controlling the neutral wire (5) and the live wire (6). The neutral wire (5) and the live wire (6) are connected to both ends of the heater body (1) via a connecting device (4). The winding assembly (3) includes: Fixing clamp (31) is used to fix the neutral wire (5) and the live wire (6) inside the rear shell (22); The abutment rod (32) is used in conjunction with the rubber rope (33) to control the neutral wire (5) and the live wire (6) to be stored inside the housing (2) when not being pulled.

2. An improved spring heater according to claim 1, characterized in that: The fixing hoop (31) is fixed on the inner wall of the rear shell (22), the abutting rod (32) is slidably installed on the inner wall of the rear shell (22), the guide rod (34) is fixed on the inner wall of the rear shell (22), and the bottom of the abutting rod (32) is fixed with a rubber rope (33).

3. An improved spring heater according to claim 2, characterized in that: The end of the rubber rope (33) away from the abutment rod (32) is fixed to the top of the fixing plate (35), which is fixed to the inner wall of the rear shell (22). The winding assembly (3) is provided in two sets.

4. An improved spring heater according to claim 1, characterized in that: The connecting device (4) includes a fixing frame (41), which is fixed on the inner wall of the rear shell (22). A sliding groove (42) is provided on the fixing frame (41), and a ceramic seat (43) is slidably installed on the inner side of the sliding groove (42).

5. An improved spring heater according to claim 4, characterized in that: The neutral wire (5) passes through the ceramic base (43) and is fixed to the ceramic base (43). The neutral wire (5) is fixed to the heater body (1) by a flexible metal braided strip (44).

6. An improved spring heater according to claim 1, characterized in that: The connecting device (4) is provided in two sets. One set of the connecting device (4) is connected to one end of the neutral wire (5) and the heater body (1), and the other set of the connecting device (4) is connected to the other end of the live wire (6) and the heater body (1).

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