A temperature control device for plastic product production

Abstract

This utility model relates to the technical field of temperature control devices for plastic products, specifically a temperature control device for the production of plastic products, including a cavity sidewall, a temperature sensing head for measuring temperature, and a sensor base for mounting the sensing head. An installation groove is formed on the inner surface of the cavity sidewall, and a protective structure is screwed into the inner wall of the installation groove. A first through-groove and a second through-groove are formed in the middle of the protective structure, used to place the sensing head and the sensor base. The beneficial effect is that the sensing head is placed in the first through-groove of the first protective sleeve, aligned with the corresponding position, so that the bottom surface of the sensing head fits against the inner bottom end of the first protective sleeve. Then, the second protective sleeve is screwed into the inside of the first protective sleeve, thus wrapping the edge of the sensing head, protecting it, and preventing breakage. When disassembling and replacing the sensing head, only the second protective sleeve needs to be rotated; the locking block on the second protective sleeve drives the sensing head away from the sensor base, completing the disassembly.

Description

Technical Field

[0001] This utility model relates to the field of temperature control devices for plastic products, specifically a temperature control device used in the production of plastic products. Background Technology

[0002] During the production of plastic products, quality confirmation requires the use of temperature control devices to ensure that the plastic melt has good fluidity and molding stability. The temperature control device mainly consists of a temperature controller, temperature sensor, heating element, cooling element, controller, power module and protection unit. However, in the existing technology, the temperature sensor is installed inside the side wall of the cavity, and the sensing head of the temperature sensor is thin. Due to its excessive length, it is very easy to bend over a long period of time or be easily damaged under external force.

[0003] In the prior art, such as a temperature control device for plastic pipe production, with application number CN202221121889.5, the airflow blown by a fan drives the input cold air to move, while the arc-shaped baffle restricts the movement trajectory of the airflow, causing it to move along the outside of the extruder barrel. This ensures that the outside of the extruder barrel can be cooled evenly, improving cooling efficiency. Furthermore, the mixing of the cold air and the fan airflow enhances the cooling effect, enabling rapid temperature control.

[0004] However, when in use, the sensor head is exposed to the outside. If the side of the sensor head is hit, it is easy to break. Moreover, the sensor head is relatively long and thin, and it will bend if it is suspended in the air for a long time. Utility Model Content

[0005] The purpose of this invention is to provide a temperature control device for the production of plastic products, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: including a cavity sidewall, a temperature sensing head for measuring temperature, and a sensor base for mounting the sensing head, a temperature controller for controlling the temperature sensor, an installation groove is provided on the inner surface of the cavity sidewall, a protective structure is screwed into the inner wall of the installation groove, and a first through groove and a second through groove are provided in the middle of the protective structure, the first through groove and the second through groove are used to place the sensing head and the sensor base.

[0007] Preferably, a hexagonal nut is installed at the bottom of the sensor head, the hexagonal nut and the sensor head are integrally formed, and the hexagonal nut is screwed to the top of the sensor base.

[0008] Preferably, the protective structure includes a slot, a block, a first protective sleeve, and a second protective sleeve. Multiple sets of slots and blocks are provided. The slots and blocks are all circumferentially surrounding the virtual central axis of the sensor head. The virtual central axes of the sensor head, sensor base, first protective sleeve, and second protective sleeve are all coincident. The slot is opened at the bottom end of the hexagonal nut. The block is fixed to the inner bottom end of the first protective sleeve and engages with the inside of the slot. The outer ring of the second protective sleeve is screwed to the inner ring of the first protective sleeve. The outer ring of the first protective sleeve is screwed to the inner wall of the mounting groove. In use, the bottom end of the second protective sleeve is in contact with the top surface of the hexagonal nut.

[0009] Preferably, the bottom end of the inner ring of the first protective sleeve is fixed with a positioning hexagonal groove, which is engaged with a hexagonal nut. The locking block is located in the inner ring of the positioning hexagonal groove and does not fit against the inner wall of the positioning hexagonal groove. The locking block, the positioning hexagonal groove and the first protective sleeve are integrally formed.

[0010] Preferably, the first through slot penetrates the first protective sleeve and is located at the virtual central axis of the first protective sleeve, the second through slot penetrates the second protective sleeve and is located at the virtual central axis of the second protective sleeve, the end hole diameter of the second through slot is equal to the diameter of the sensor head, and handles are installed at the top of both the first and second protective sleeves, and the tops of the first and second protective sleeves are flush.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The temperature control device for plastic product manufacturing proposed in this utility model addresses the issue that traditional methods of screwing the sensor head onto the sensor base result in a thin and excessively long sensor head that bends over time and is prone to breakage under external force. Instead, the sensor head is placed in the first groove of the first protective sleeve, with the hexagonal nut at the bottom of the sensor head aligned with the positioning hexagonal groove inside the first protective sleeve and the locking block aligned with the locking block, thus securing the bottom surface of the sensor head against the inner bottom of the first protective sleeve. Then, the second protective sleeve is screwed into the inside of the first protective sleeve, with its bottom surface against the top surface of the hexagonal nut at the bottom of the sensor head. At this point, the sensor head passes into the second groove, effectively enclosing its edges and protecting it from breakage. Finally, the entire device is screwed onto the upper end of the sensor base. To disassemble or replace the sensor head, simply rotate the second protective sleeve; the locking block on the second protective sleeve, under the action of the locking block, will cause the sensor head to detach from the sensor base, completing the disassembly. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 The structure of this utility model Figure 1 Enlarged view of point A in the middle; Figure 3 The structure of this utility model Figure 2 Mid-top view; Figure 4 The structure of this utility model Figure 3 Sectional view along axis AA; Figure 5 The structure of this utility model Figure 4 Enlarged view at point B in the middle; Figure 6 This is an exploded view of the structure of this utility model; Figure 7 The structure of this utility model Figure 6 Top view; Figure 8 The structure of this utility model Figure 7 BB-direction sectional view; Figure 9 This is a schematic diagram of the protective structure of this utility model; Figure 10 This is a schematic diagram of the top of the protective structure of this utility model; Figure 11 This is a schematic diagram of the first protective sleeve structure of this utility model.

[0012] In the diagram: 1. Cavity sidewall; 2. Hexagonal nut; 3. Sensor base; 4. Sensor head; 5. Mounting slot; 6. Slot; 7. Block; 8. First protective sleeve; 9. First through slot; 10. Positioning hexagonal slot; 11. Second protective sleeve; 12. Second through slot; 13. Handle; 14. Temperature controller. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Example 1 Please see Figures 1-4 This utility model provides a technical solution: a temperature control device for the production of plastic products, including a cavity sidewall 1, a temperature sensing head 4 for measuring temperature and a sensor base 3 for mounting the sensing head 4, a temperature controller 14 for controlling the temperature sensor, a hexagonal nut 2 installed at the bottom of the sensing head 4, the hexagonal nut 2 and the sensing head 4 are integrally formed, the hexagonal nut 2 is screwed to the top of the sensor base 3, and an installation groove 5 is opened on the inner surface of the cavity sidewall 1; Specifically, the temperature control device mainly consists of a temperature controller 14, a temperature sensor, a heating element, a cooling element, a controller, a power module, and a protection unit. The temperature controller 14 uses the Omron E5CC-QX2ASM-800 model of a general-purpose PID temperature controller. The temperature sensor monitors the temperature of the plastic or processing equipment in real time and converts it into an electrical signal. The temperature sensor uses a high-performance PT100 sensor and mainly consists of a sensor base 3 and a sensor head 4, which transmits the signal to the controller (the core part of the temperature controller). The controller uses a built-in algorithm (such as PID) to process the measured temperature. The measured value is compared and analyzed with the set temperature. Output control commands drive heating elements (such as resistance wires or heating rods) to heat up or trigger cooling elements (such as cooling channels or fans) to cool down. Simultaneously, the power module provides stable power support to all components. Protection units (such as over-temperature alarms and overload protectors) monitor abnormal conditions throughout the process, promptly cutting off power or issuing alarms in case of temperature runaway or circuit failure, ensuring safe and stable system operation. This achieves precise closed-loop control of the plastic processing temperature. The cavity sidewall 1 is generally known, typically referring to the outer structure of the barrel, mold cavity, or heating / cooling channel; all of the above devices are existing technologies. The temperature controller 14 is bolted to the outer wall of the cavity sidewall 1, which is referenced... Figure 4 First, insert the sensor base 3 into the mounting slot 5 and connect it to the external temperature controller.

[0015] Example 2 Please see Figures 4-11Based on Embodiment 1, in order to protect the sensor head and improve disassembly efficiency, a protective structure is screwed onto the inner wall of the mounting groove 5. The protective structure includes a slot 6, a locking block 7, a first protective sleeve 8, and a second protective sleeve 11. Multiple sets of slots 6 and locking blocks 7 are provided, and both slots 6 and locking blocks 7 are circumferentially encircled on the virtual central axis of the sensor head 4. The virtual central axes of the sensor head 4, sensor base 3, first protective sleeve 8, and second protective sleeve 11 are all coincident. The slot 6 is located at the bottom end of the hexagonal nut 2. The locking block 7 is fixed to the inner bottom end of the first protective sleeve 8 and is engaged inside the slot 6. The outer ring of the second protective sleeve 11 is screwed onto the inner ring of the first protective sleeve 8, and the outer ring of the first protective sleeve 8 is screwed onto the inner wall of the mounting groove 5. In use, the bottom end of the second protective sleeve 11 is in contact with the top surface of the hexagonal nut 2. The bottom of the inner ring of the protective sleeve 8 is fixed with a positioning hexagonal groove 10, which is engaged with the hexagonal nut 2. The locking block 7 is located in the inner ring of the positioning hexagonal groove 10 and does not fit against the inner wall of the positioning hexagonal groove 10. The locking block 7, the positioning hexagonal groove 10 and the first protective sleeve 8 are integrally formed. The protective structure has a first through groove 9 and a second through groove 12 in the middle. The first through groove 9 and the second through groove 12 are used to place the sensor head 4 and the sensor base 3. The first through groove 9 passes through the first protective sleeve 8 and is located at the virtual central axis of the first protective sleeve 8. The second through groove 12 passes through the second protective sleeve 11 and is located at the virtual central axis of the second protective sleeve 11. The end hole diameter of the second through groove 12 is equal to the diameter of the sensor head 4. The top of the first protective sleeve 8 and the second protective sleeve 11 are both equipped with handles 13. The tops of the first protective sleeve 8 and the second protective sleeve 11 are flush. Specifically, to prevent the sensor head 4 from swinging due to excessive length or under external force, or even breaking, refer to... Figure 5 , Figure 6 , Figure 8 It is known that a first protective sleeve 8 is screwed onto the inner wall of the mounting groove 5. The positioning hexagonal groove 10 within the first protective sleeve 8 precisely engages with the hexagonal nut 2 at the bottom of the sensor head 4, preventing rotational displacement. Simultaneously, multiple sets of locking blocks 7 are provided on the inner ring of the positioning hexagonal groove 10, corresponding one-to-one with the locking slots 6 on the hexagonal nut 2 at the bottom of the sensor head 4, achieving limiting and locking. The integrated molding enhances overall strength and precision. (Refer to...) Figure 8 and Figure 9 The second protective sleeve 11 is screwed onto the inner ring of the first protective sleeve 8, with its bottom surface tightly against the top surface of the hexagonal nut 2, thereby holding the sensor head 4 in place and preventing it from shaking. During use, the second through groove 12 on the second protective sleeve 11 can completely cover the edge of the sensor head 4, preventing breakage or damage caused by external contact with the sensor head 4, thus improving the protection of the sensor head 4. In addition, the sensor head 4 is a consumable item; when it is necessary to disassemble the sensor head 4, refer to... Figure 10The worker rotates the handle 13 on the first protective sleeve 8, the locking block 7 engages with the locking slot 6, causing the hexagonal nut 2 to disengage from the sensor base 3. Finally, the worker rotates the handle 13 on the second protective sleeve 11, causing the second protective sleeve 11 to disengage from the first protective sleeve 8, thus completing the disassembly operation and significantly improving maintenance efficiency.

[0016] During use, to prevent the sensor head 4 from swinging due to excessive length or under external force, or even breaking, please refer to... Figure 5 , Figure 6 , Figure 8 It is known that a first protective sleeve 8 is screwed onto the inner wall of the mounting groove 5. The positioning hexagonal groove 10 within the first protective sleeve 8 precisely engages with the hexagonal nut 2 at the bottom of the sensor head 4, preventing rotational displacement. Simultaneously, multiple sets of locking blocks 7 are provided on the inner ring of the positioning hexagonal groove 10, corresponding one-to-one with the locking slots 6 on the hexagonal nut 2 at the bottom of the sensor head 4, achieving limiting and locking. The integrated molding enhances overall strength and precision. (Refer to...) Figure 8 and Figure 9 The second protective sleeve 11 is screwed into the inner ring of the first protective sleeve 8, with its bottom surface tightly against the top surface of the hexagonal nut 2, thereby holding the sensor head 4 in place and preventing it from shaking. During use, the second through groove 12 on the second protective sleeve 11 can completely cover the edge of the sensor head 4, preventing breakage or damage caused by external contact with the sensor head 4 and improving the protection of the sensor head 4. In addition, the sensor head 4 is a consumable item. When it is necessary to disassemble the sensor head 4, the worker moves the handle 13 on the first protective sleeve 8, the locking block 7 engages with the locking groove 6, driving the hexagonal nut 2 to disengage from the sensor base 3, and finally rotates the handle 13 on the second protective sleeve 11 to disengage the second protective sleeve 11 from the first protective sleeve 8, thereby completing the disassembly operation and significantly improving maintenance efficiency.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for the production of plastic products, comprising a cavity sidewall (1), a temperature sensing head (4) for measuring temperature, and a sensor base (3) for mounting the sensing head (4), a temperature controller (14) for controlling the temperature sensor, wherein an mounting groove (5) is provided on the inner surface of the cavity sidewall (1), characterized in that: The inner wall of the mounting groove (5) is screwed with a protective structure. The protective structure has a first through groove (9) and a second through groove (12) in the middle. The first through groove (9) and the second through groove (12) are used to place the sensor head (4) and the sensor base (3).

2. The temperature control device for plastic product manufacturing according to claim 1, characterized in that: The bottom of the sensor head (4) is fitted with a hexagonal nut (2), which is integrally formed with the sensor head (4). The hexagonal nut (2) is screwed onto the top of the sensor base (3).

3. A temperature control device for the production of plastic products according to claim 2, characterized in that: The protective structure includes a slot (6), a block (7), a first protective sleeve (8), and a second protective sleeve (11). The slot (6) and the block (7) are provided in multiple sets. The slot (6) and the block (7) are both circumferentially encircled on the virtual central axis of the sensor head (4). The virtual central axes of the sensor head (4), the sensor base (3), the first protective sleeve (8), and the second protective sleeve (11) are all coincident. The slot (6) is opened at the bottom end of the hexagonal nut (2). The block (7) is fixed at the inner bottom end of the first protective sleeve (8). The block (7) is engaged in the inside of the slot (6). The outer ring of the second protective sleeve (11) is screwed to the inner ring of the first protective sleeve (8). The outer ring of the first protective sleeve (8) is screwed to the inner wall of the mounting groove (5). In the use state, the bottom end of the second protective sleeve (11) is in contact with the top surface of the hexagonal nut (2).

4. A temperature control device for the production of plastic products according to claim 3, characterized in that: The bottom of the inner ring of the first protective sleeve (8) is fixed with a positioning hexagonal groove (10). The positioning hexagonal groove (10) is engaged with the hexagonal nut (2). The locking block (7) is located in the inner ring of the positioning hexagonal groove (10) and does not fit against the inner wall of the positioning hexagonal groove (10). The locking block (7), the positioning hexagonal groove (10) and the first protective sleeve (8) are integrally formed.

5. A temperature control device for the production of plastic products according to claim 3, characterized in that: The first through groove (9) penetrates the first protective sleeve (8) and is located at the virtual central axis of the first protective sleeve (8). The second through groove (12) penetrates the second protective sleeve (11) and is located at the virtual central axis of the second protective sleeve (11). The end hole diameter of the second through groove (12) is equal to the diameter of the sensor head (4). The top ends of the first protective sleeve (8) and the second protective sleeve (11) are both equipped with handles (13). The top ends of the first protective sleeve (8) and the second protective sleeve (11) are flush.

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