A heating element securing arrangement

Abstract

The utility model discloses a kind of heating element fixing device, it is related to heating element technical field, including mould plate, plug-in slot and heating rod, the quantity of plug-in slot is several, and it is evenly opened in the mould plate front surface, the quantity of heating rod is several, and it is respectively arranged in several plug-in slot inside.The utility model is through the cooperation of mould plate, plug-in slot, heating rod, sealing heat insulation end, fixing device, box body, clamping assembly, support rod, clamping plate, push spring, card slot, gradual pressure slope, control component, rotating rod, connecting rod, pressure rod, knob, limit stop plate, T type chuck, bar extrusion slot and antiskid line, it is realized that heating rod and mould plate can be quickly installed and fixed and disassembled without the aid of tool, avoid thread damage and silk, reduce installation maintenance time cost, the effect of protecting mould plate mounting hole and prolonging its service life.

Description

Technical Field

[0001] This utility model relates to the field of heating element technology, specifically a heating element fixing device. Background Technology

[0002] In the field of industrial production and equipment operation, heating elements, as core components for temperature control, are widely used in various scenarios such as mold heating, liquid heating, and air heating. Their performance stability and ease of installation directly affect the overall operating efficiency and maintenance costs of the equipment. Among them, electric heating rods have become commonly used heating elements in mold heating scenarios due to their advantages such as fast heating rate, high temperature control accuracy, and strong adaptability. In the mold processing of plastic molding and metal die casting, electric heating rods are required to precisely heat the mold to ensure that the raw materials can be fully melted, flowed, and shaped. Therefore, the stable assembly of the electric heating rod and the mold plate is crucial. The fixing method of electric heating rod and mold plate mostly adopts a bolt thread fit structure. That is, a mounting hole with internal threads is opened on the mold plate, and the end of the electric heating rod is provided with external threads. The electric heating rod is fixed by screwing it into the mounting hole. Alternatively, a mounting hole with internal threads is opened on the mold plate, and the end of the electric heating rod is provided with a mounting lug. The electric heating rod is installed and fixed by bolts fitting the mounting lug. However, in practical applications, the existing method of fixing electric heating rods requires repeated twisting of the heating rods or bolts using tools such as wrenches during the assembly and disassembly process. This is cumbersome, especially when multiple electric heating rods need to be installed on the mold plate. This significantly increases the time cost of installation and subsequent maintenance. Furthermore, if the twisting process is skewed, or if excessive force is applied during long-term use or disassembly, the threads are easily damaged, which can easily lead to stripping. Once the threads are stripped, not only will the electric heating rods not be able to be stably fixed, but the mounting holes of the mold plate may also be damaged, resulting in a shortened lifespan of the mold plate and further increasing equipment maintenance costs. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a heating element fixing device that enables quick installation, fixing, and disassembly of the heating rod and mold plate without the need for tools. This avoids thread damage and stripping, reduces installation and maintenance time costs, protects the mounting holes of the mold plate, and extends its service life. It improves upon or solves the problems of existing electric heating rod fixing methods in practical applications, where the installation and disassembly process requires repeated twisting of the electric heating rod or bolts using wrenches or other tools, resulting in cumbersome operation steps. This is especially problematic when multiple electric heating rods need to be installed on the mold plate, significantly increasing installation and subsequent maintenance time costs. Furthermore, if misalignment occurs during twisting, or if excessive force is applied during long-term use or disassembly, thread damage can easily occur, leading to stripping. Stripping not only prevents the electric heating rod from being stably fixed but may also damage the mounting holes of the mold plate, shortening its service life and further increasing equipment maintenance costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a heating element fixing device, comprising a mold plate, insertion slots, and heating rods. The insertion slots are a plurality of units, evenly distributed on the front surface of the mold plate. The heating rods are a plurality of units, each disposed within one of the insertion slots, with their front ends extending out of the insertion slots and movably connected to them. The front ends of the heating rods extending out of the insertion slots are all sealed and heat-insulating ends. Each front end of the heating rods extending out of the insertion slots is provided with a fixing device. The fixing device includes a box body, a snap-fit ​​component, and a control component. The left end of the box body is fitted onto the front end surface of the heating rod and is fixedly connected to the heating rod. The snap-fit ​​component is located inside the box body on the left side, and the control component is located on the right side of the snap-fit ​​component.

[0005] In a preferred embodiment of this invention, the snap-fit ​​assembly includes a support rod, a snap plate, a push spring, a snap groove, and a tapered inclined surface. Two support rods are fixedly connected to the upper and lower sides of the left inner surface of the box body, respectively. The snap plate is fitted onto the right end surfaces of the two support rods and slidably connected to them. Two push springs are fitted onto the left ends of the two support rods, with their left and right ends fixedly connected to the left inner surface of the box body and the left side of the snap plate, respectively. The snap groove is formed on the right side surface of the snap plate and penetrates through it. The tapered inclined surface is formed on the right side of the rear end of the snap plate.

[0006] As a preferred embodiment of this invention, a limiting plate is fixedly connected to the right end of both support rods.

[0007] As a preferred embodiment of this utility model, a T-shaped clip is fixedly connected to the front surface of the mold plate on the right side of several insertion slots. The front end of the T-shaped clip extends into the interior of the box body and corresponds to the tapered slope on the right side of the rear end of the card plate, and is adapted to the card slot.

[0008] As a preferred embodiment of this invention, a strip-shaped extrusion groove is provided on the upper end of the front surface of the card plate.

[0009] In a preferred embodiment of this invention, the control component includes a rotating rod, a connecting rod, a pressing rod, and a knob. The rotating rod is located on the right side of the card plate, and both its front and rear ends are rotatably connected to the box body, with its front end extending out of the box body. The connecting rod is sleeved on the surface of the rotating rod and fixedly connected to it. The upper end of the connecting rod is inclined to the left and corresponds to the strip-shaped extrusion groove. The pressing rod is fixedly connected to the upper end of the connecting rod, and its rear end is located inside the strip-shaped extrusion groove and movably connected to it. The knob is fixedly connected to the front end of the rotating rod extending out of the box body.

[0010] As a preferred embodiment of this invention, the knob has several anti-slip textures on its circumference.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the combined use of a mold plate, insertion slot, heating rod, sealing and heat-insulating end, fixing device, box body, snap-fit ​​assembly, support rod, snap plate, push spring, snap groove, progressive pressure slope, control assembly, rotating rod, connecting rod, pressure rod, knob, limit stop plate, T-shaped snap head, strip extrusion groove, and anti-slip texture, improves or solves to a certain extent the problems of existing electric heating rod fixing methods in practical applications. These methods require repeated twisting of the electric heating rod or bolts using tools such as wrenches, making the operation cumbersome. Especially when multiple electric heating rods need to be installed on the mold plate, this significantly increases the time cost of installation and subsequent maintenance. Furthermore, if misalignment occurs during twisting, or if excessive force is applied during long-term use or disassembly, thread damage can easily occur, leading to stripping. Stripping not only prevents the electric heating rod from being stably fixed but may also damage the mounting holes of the mold plate, shortening its lifespan and further increasing equipment maintenance costs.

[0012] 2. This utility model, by setting up a snap-fit ​​component, can guide the T-shaped snap-fit ​​head to automatically adapt with the help of the gradually pressing inclined surface. With the elastic reset of the push spring, the T-shaped snap-fit ​​head and the snap-fit ​​slot can be accurately engaged. At the same time, the limiting plate ensures the sliding stability of the snap-fit ​​plate, effectively improving the installation efficiency and fixing reliability of the heating rod.

[0013] 3. By setting up a control component, the linkage between the knob, rotating rod, connecting rod, and pressure rod can quickly drive the locking plate to release the locking mechanism. In addition, the anti-slip texture can increase the friction of the hand and prevent slipping during operation, further improving the convenience and safety of disassembling the heating rod. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the mold plate of this utility model; Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the heating rod; Figure 3 A cross-sectional top view of the fixed device; Figure 4 This is a schematic diagram of the exploded 3D structure of the box. Figure 5 This is a schematic diagram of the exploded three-dimensional structure of a fixed device.

[0015] In the diagram: 1. Mold plate; 2. Insertion slot; 3. Heating rod; 4. Sealed and heat-insulating end; 5. Fixing device; 6. Box body; 7. Snap-fit ​​assembly; 71. Support rod; 72. Clip plate; 73. Push spring; 74. Clip groove; 75. Gradient pressure slope; 8. Control assembly; 81. Rotating rod; 82. Connecting rod; 83. Pressure rod; 84. Knob; 9. Limiting plate; 10. T-shaped clip; 11. Strip extrusion groove; 12. Anti-slip texture. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0020] Example 1 Reference Figure 1-5 This is the first embodiment of the present invention, which provides a heating element fixing device, including a mold plate 1, an insertion slot 2 and a heating rod 3. The number of insertion slots 2 is several and they are evenly opened on the front surface of the mold plate 1. The number of heating rods 3 is several and they are respectively disposed inside the several insertion slots 2, and the front end of each heating rod 3 extends out of the insertion slot 2 and is movably connected to the insertion slot 2. The front ends of the several heating rods 3 extending out of the insertion slot 2 are all sealed heat insulation ends 4, and the front ends of the several heating rods 3 extending out of the insertion slot 2 are all provided with fixing devices 5. The fixing device 5 includes a box body 6, a snap-fit ​​component 7, and a control component 8. The left end of the box body 6 is fitted onto the front end surface of the heating rod 3 and is fixedly connected to the heating rod 3. The snap-fit ​​component 7 is located inside the left side of the box body 6, and the control component 8 is located on the right side of the snap-fit ​​component 7.

[0021] Specifically, it enables quick installation, fixing, and disassembly of the heating rod 3 and the mold plate 1 without the need for repeated twisting with tools, avoiding thread stripping and damage to the mold plate 1, and greatly improving assembly efficiency and subsequent maintenance convenience.

[0022] Furthermore, during installation, the heating rod 3 is inserted into the insertion slot 2, which moves the box body 6 closer to the mold plate 1. The snap-fit ​​component 7 cooperates with the T-shaped snap head 10 of the mold plate 1 to complete the snap-fit ​​fixation. During disassembly, the control component 8 drives the snap-fit ​​component 7 to release the snap-fit ​​with the T-shaped snap head 10, thereby realizing the removal of the heating rod 3. All components work together to complete the fixing and disassembly operations of the heating rod 3.

[0023] Example 2 In the second embodiment of this utility model, the snap-fit ​​assembly 7 includes a support rod 71, a snap plate 72, a push spring 73, a snap groove 74, and a gradually pressing slope 75. There are two support rods 71, which are fixedly connected to the upper and lower sides of the left inner surface of the box body 6 respectively. The snap plate 72 is sleeved on the right end surface of the two support rods 71 ​​and is slidably connected to the support rods 71. There are two push springs 73, which are sleeved on the left end of the two support rods 71 ​​respectively, and the left and right ends are fixedly connected to the left inner surface of the box body 6 and the left side of the snap plate 72 respectively. The snap groove 74 is opened on the right side surface of the snap plate 72 and penetrates the snap plate 72. The gradually pressing slope 75 is opened on the right side of the rear end of the snap plate 72. Both support rods 71 ​​are fixedly connected to limit plates 9 at their right ends; T-shaped clips 10 are fixedly connected to the front surface of the mold plate 1 on the right side of several insertion slots 2. The front end of the T-shaped clips 10 extends into the interior of the box body 6 and corresponds to the gradual pressing slope 75 on the right side of the rear end of the card plate 72, and is adapted to the card slot 74. A strip-shaped extrusion groove 11 is provided on the upper end of the front surface of the card plate 72.

[0024] Specifically, by setting up the snap-fit ​​component 7, the T-shaped snap-fit ​​head 10 can be automatically adapted by the gradual pressure slope 75, and the push spring 73 elastically resets to achieve precise snap-fit ​​between the T-shaped snap-fit ​​head 10 and the slot 74. At the same time, the limiting plate 9 ensures the sliding stability of the plate 72, effectively improving the installation efficiency and fixing reliability of the heating rod 3.

[0025] Furthermore, during installation, the T-shaped clip 10 slides along the gradually pressing inclined surface 75 of the clip plate 72 and presses against the clip plate 72, causing the clip plate 72 to overcome the elastic force of the push spring 73 and move to the left along the support rod 71. After the T-shaped clip 10 is aligned with the slot 74, the push spring 73 pushes the clip plate 72 to the right, locking the T-shaped clip 10 into the slot 74. The limiting plate 9 restricts the sliding stroke of the clip plate 72, preventing the clip plate 72 from detaching from the support rod 71 or excessively pressing the push spring 73, ensuring that the clipping process is stable and controllable.

[0026] Example 3 In the third embodiment of this utility model, the control component 8 includes a rotating rod 81, a connecting rod 82, a pressing rod 83, and a knob 84. The rotating rod 81 is located on the right side of the card plate 72, and both its front and rear ends are rotatably connected to the box body 6, with its front end extending out of the box body 6. The connecting rod 82 is sleeved on the surface of the rotating rod 81 and is fixedly connected to the rotating rod 81. The upper end of the connecting rod 82 is inclined to the left and corresponds to the strip extrusion groove 11. The pressing rod 83 is fixedly connected to the upper end of the connecting rod 82, and its rear end is located inside the strip extrusion groove 11 and is movably connected to the strip extrusion groove 11. The knob 84 is fixedly connected to the front end of the rotating rod 81 extending out of the box body 6. The knob 84 has several anti-slip textures 12 on its surface.

[0027] Specifically, by setting up control component 8, in which the knob 84 is linked with the rotating rod 81, the connecting rod 82, and the pressure rod 83, the locking plate 72 can be quickly driven to release from the lock, and the anti-slip texture 12 can increase the friction of the hand to avoid slipping during operation, further improving the convenience and safety of disassembling the heating rod 3.

[0028] Furthermore, during disassembly and maintenance, simply turn the knob 84 at the front end of the box 6 to drive the rotating rod 81 to rotate synchronously. When the rotating rod 81 rotates, it will drive the connecting rod 82 fixed on the surface to rotate around the rotating rod 81 as the axis. The pressure rod 83 at the upper end of the connecting rod 82 rotates with the connecting rod 82 and slides in the strip extrusion groove 11. At the same time, it generates a leftward pushing force on the inner wall of the strip extrusion groove 11, forcing the card plate 72 to overcome the elastic force of the push spring 73 and move to the left along the support rod 71 until the card slot 74 is completely disengaged from the T-shaped card head 10. At this time, the heating rod 3 can be pulled forward directly to pull it out of the insertion slot 2, achieving quick disassembly.

[0029] Working principle: During installation, the heating rod 3 is aligned and inserted into the insertion slot 2 from front to back. Simultaneously, the box body 6 is aligned with the corresponding T-shaped clip 10 on the front surface of the mold plate 1. As the heating rod 3 is gradually inserted into the insertion slot 2, the distance between the box body 6 and the T-shaped clip 10 gradually decreases until the T-shaped clip 10 is fully inserted into the box body 6. The front end of the T-shaped clip 10 contacts the tapered slope 75 at the rear end of the clamping plate 72. Continuing to push the heating rod 3 and the box body 6, the T-shaped clip 10 generates a leftward squeezing force along the tapered slope 75, forcing the clamping plate 72 to overcome the elasticity of the push spring 73. When the support rod 71 slides to the left, after the heating rod 3 is fully inserted into the insertion slot 2, the T-shaped clamp 10 will completely pass over the progressive slope 75 and correspond to the position of the slot 74. At this time, the push spring 73 loses its squeezing force and elastically resets, pushing the clamping plate 72 to slide to the right along the support rod 71, so that the T-shaped clamp 10 is accurately inserted into the slot 74. At this time, the clamping plate 72 is tightly fitted with the T-shaped clamp 10 under the continuous pressing action of the push spring 73, completing the rapid fixing of the heating rod 3 and the mold plate 1. The whole process does not require the use of tools to twist, and stable assembly can be achieved by linear pushing. When disassembly and maintenance are required, simply turn the knob 84 at the front end of the box 6 to drive the rotating rod 81 to rotate synchronously. When the rotating rod 81 rotates, it will drive the connecting rod 82 fixed on the surface to rotate around the rotating rod 81 as the axis. The pressure rod 83 at the upper end of the connecting rod 82 rotates with the connecting rod 82 and slides in the strip extrusion groove 11. At the same time, it generates a leftward pushing force on the inner wall of the strip extrusion groove 11, forcing the card plate 72 to overcome the elastic force of the push spring 73 and move to the left along the support rod 71 until the card slot 74 is completely disengaged from the T-shaped card head 10. At this time, the heating rod 3 can be pulled forward directly to pull it out of the insertion slot 2, achieving quick disassembly. During this process, the limiting plate 9 always provides rigid constraint on the sliding stroke of the clamping plate 72, which can prevent the clamping plate 72 from disengaging from the support rod 71 due to the reset thrust of the push spring 73. This ensures that the clamping plate 72 always slides stably along the support rod 71 to accurately engage the T-shaped clamping head 10, which not only ensures the structural stability of the clamping component 7, but also increases the friction of the hand with the anti-slip texture 12 to avoid slipping during operation.

[0030] In summary, by using the mold plate 1, insertion slot 2, heating rod 3, sealing and heat insulation end 4, fixing device 5, box body 6, snap-fit ​​assembly 7, support rod 71, clamping plate 72, push spring 73, clamping groove 74, progressive pressure slope 75, control assembly 8, rotating rod 81, connecting rod 82, pressure rod 83, knob 84, limit stop plate 9, T-shaped clamp head 10, strip extrusion groove 11, and anti-slip texture 12 in combination, the heating rod and mold plate can be quickly installed, fixed, and disassembled without the aid of tools, avoiding thread damage and stripping, reducing installation and maintenance time and costs, protecting the mounting holes of the mold plate, and extending its service life.

[0031] The mold plate 1, insertion slot 2, heating rod 3, sealing and heat insulation end 4, and push spring 73 used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0032] It should be noted that the mold plate 1, the insertion slot 2, the heating rod 3, the sealing and heat insulation end 4, and the push spring 73 are existing devices or equipment in the prior art, or devices or equipment that can be implemented by the prior art. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are all common knowledge in the art, and therefore will not be described in detail in this application document.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heating element fixing device, comprising a mold plate (1), insertion slots (2), and heating rods (3), wherein the number of insertion slots (2) is several and they are evenly distributed on the front surface of the mold plate (1), and the number of heating rods (3) is several and they are respectively disposed inside the several insertion slots (2), with their front ends extending out of the insertion slots (2) and movably connected to the insertion slots (2), and the front ends of the several heating rods (3) extending out of the insertion slots (2) are all sealed heat-insulating ends (4), characterized in that: Each of the heating rods (3) extending out of the insertion slot (2) is provided with a fixing device (5); The fixing device (5) includes a box body (6), a snap-fit ​​component (7) and a control component (8). The left end of the box body (6) is fitted onto the front end surface of the heating rod (3) and is fixedly connected to the heating rod (3). The snap-fit ​​component (7) is located inside the left side of the box body (6), and the control component (8) is located on the right side of the snap-fit ​​component (7).

2. The heating element fixing device according to claim 1, characterized in that: The snap-fit ​​assembly (7) includes a support rod (71), a snap plate (72), a push spring (73), a snap groove (74), and a tapered inclined surface (75). There are two support rods (71), which are fixedly connected to the upper and lower sides of the left inner surface of the box body (6). The snap plate (72) is sleeved on the right end surface of the two support rods (71) and is slidably connected to the support rods (71). There are two push springs (73), which are sleeved on the left end of the two support rods (71) and are fixedly connected to the left inner surface of the box body (6) and the left side of the snap plate (72) at their left and right ends, respectively. The snap groove (74) is opened on the right side surface of the snap plate (72) and penetrates the snap plate (72). The tapered inclined surface (75) is opened on the right side of the rear end of the snap plate (72).

3. The heating element fixing device according to claim 2, characterized in that: Both of the support rods (71) are fixedly connected to a limiting plate (9) at their right ends.

4. A heating element fixing device according to claim 2, characterized in that: A T-shaped clip (10) is fixedly connected to the front surface of the mold plate (1) on the right side of several insertion slots (2). The front end of the T-shaped clip (10) extends into the interior of the box body (6) and corresponds to the gradual pressure slope (75) on the right side of the rear end of the card plate (72), and is adapted to the card slot (74).

5. A heating element fixing device according to claim 2, characterized in that: The front surface of the card plate (72) has a strip-shaped extrusion groove (11) at the upper end.

6. A heating element fixing device according to claim 5, characterized in that: The control component (8) includes a rotating rod (81), a connecting rod (82), a pressure rod (83), and a knob (84). The rotating rod (81) is located on the right side of the card plate (72), and both its front and rear ends are rotatably connected to the box body (6), with its front end extending out of the box body (6). The connecting rod (82) is sleeved on the surface of the rotating rod (81) and is fixedly connected to the rotating rod (81). The upper end of the connecting rod (82) is inclined to the left and corresponds to the strip extrusion groove (11). The pressure rod (83) is fixedly connected to the upper end of the connecting rod (82), and its rear end is located inside the strip extrusion groove (11) and is movably connected to the strip extrusion groove (11). The knob (84) is fixedly connected to the front end of the rotating rod (81) extending out of the box body (6).

7. A heating element fixing device according to claim 6, characterized in that: The knob (84) has several anti-slip textures (12) on its surface.

Images