Plastic mould preheating device

Abstract

The utility model relates to the technical field of mold preheating, in particular to a plastic mold preheating device. According to the technical scheme, a base is connected to a machine body through a supporting column, a heating disc is installed on the base and composed of a plurality of soaking plates, a through hole is formed in each soaking plate in a penetrating mode, a proximity switch is installed at the position, located at the through hole, of the base, and an electric heating pipe is installed at the bottom end of each soaking plate; a control instrument is installed on the machine body, a switch is installed on the machine body and located on one side of the control instrument, and heat dissipation holes are formed in the two sides of the machine body in a penetrating mode. According to the plastic mold preheating device, the heating efficiency and uniformity of the plastic mold preheating device are improved, the automatic control capability and reliability of equipment are enhanced, and a more convenient, efficient and safe solution is provided for the preheating process of the plastic mold.

Description

Technical Field

[0001] This utility model relates to the field of mold preheating technology, specifically to a plastic mold preheating device. Background Technology

[0002] Plastic molds are a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes in the mold's punch, die, and auxiliary molding systems allow for the production of a range of plastic parts of different shapes and sizes. Plastic molds are the mother of industry; the release of new products always involves plastics.

[0003] A search revealed that patent CN202120861461.3 discloses a heating device for plastic molds. While this device preheats cooled heat-conducting oil in a preheating oil tank before introducing it into the main oil tank, preventing direct mixing of the cooled and heated oil and creating a circulating flow to heat the plastic in the injection sleeve and cavity, thus preventing temperature drops and slow flow during casting and improving production efficiency, the heating area is fixed and cannot be adjusted according to mold size. Because the heating area cannot be adjusted, the device may not provide optimal heating for molds of different sizes. For smaller molds, an excessively large heating area may lead to energy waste; while for larger molds, the heating area may be insufficient, resulting in uneven heating or low heating efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a plastic mold preheating device, which solves the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A plastic mold preheating device includes a machine body, a base connected to the machine body via a support column, and a heating plate installed on the base;

[0007] The heating plate is composed of multiple heat spreaders, and each heat spreader has a through hole. A proximity switch is installed on the base at the through hole, and an electric heating tube is installed at the bottom of the heat spreader.

[0008] The machine body is equipped with a control instrument, and a switch is installed on one side of the control instrument. Heat dissipation holes are provided through the two sides of the machine body.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, a proximity switch is used to detect whether a mold is installed on the heat spreader. When the proximity switch detects that a mold is placed on the heat spreader, it connects the heating element at the bottom of the heat spreader to the power supply.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] This design automates the mold preheating process. Once the mold is placed on the heat spreader, a proximity switch immediately detects it and automatically activates the heating element. This not only improves work efficiency but also reduces the tediousness of manual operation and lowers the possibility of uneven heating or energy waste due to human error.

[0013] Furthermore, the heat spreader is composed of multiple annular plates with different inner diameters, and the heating element is located on the center line of the heat spreader.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] This design allows the vapor chamber to distribute heat more evenly. Because the vapor chamber is composed of multiple annular plates with varying inner diameters, it can better accommodate molds of different sizes, ensuring that all parts of the mold receive uniform heating. Simultaneously, the heating element is located on the center line of the vapor chamber, ensuring that heat diffuses evenly from the center outwards, further improving heating uniformity and efficiency.

[0016] Furthermore, two wire holes are provided through the body, and the two wire holes are used to lay the power lines of the proximity switch and the heating element, respectively.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] This design makes the equipment's wiring neater and more organized. By laying the power cords for the proximity switch and heating element separately in two wire holes, tangled and crossed wires are avoided, improving the equipment's aesthetics and facilitating later maintenance and repair. At the same time, this design also helps reduce equipment downtime due to wiring faults, improving the equipment's reliability and stability.

[0019] Furthermore, a proximity switch and a heating element are grouped together, and each group of proximity switches and heating elements is electrically connected to a controller inside the machine body, and can operate independently through the controller inside the machine body.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] This design allows for independent control of the heating process on each heat spreader. When a mold is placed on a heat spreader, only the proximity switch and heating element corresponding to that heat spreader will be activated, while other heat spreaders without molds will not be heated. This independent control method not only improves energy efficiency but also avoids equipment damage or safety hazards caused by overheating. Furthermore, this design makes the equipment more flexible and convenient to operate, allowing for adjustments to the heating zone and temperature as needed.

[0022] This utility model provides a plastic mold preheating device. It has the following beneficial effects:

[0023] The heating plate consists of multiple heat spreaders, each composed of several annular plates with varying inner diameters, a unique design. The heating element is positioned along the center line of each heat spreader, ensuring even heat distribution across the entire plate. This design not only improves heating efficiency but also guarantees uniform heating of the mold, preventing deformation or damage caused by uneven temperature distribution.

[0024] Each heat spreader is equipped with a proximity switch, forming a group with the heating element, and each group is individually electrically connected to the controller inside the machine. This means that when the proximity switch detects a mold on the heat spreader, it automatically turns on the power to the corresponding heating element and begins heating. This intelligent control not only saves energy but also improves operational safety and convenience.

[0025] The modular design of the heating plate (consisting of multiple heat spreaders) makes this preheating device highly flexible. Some or all of the heat spreaders can be used depending on actual needs to accommodate molds of different sizes and shapes. This design not only improves equipment utilization but also reduces operating costs.

[0026] The machine body has ventilation holes running through both sides, which helps to dissipate the heat generated inside the equipment in a timely manner and maintain stable operation. This not only extends the service life of the equipment but also improves heating efficiency.

[0027] The control instruments and switches are all mounted on the main body for easy operation and maintenance. Two through-holes on the main body are used to lay the power cables for the proximity switch and heating element, making the wiring neater and more organized, and facilitating future maintenance and repairs. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0029] In the attached diagram:

[0030] Figure 1 This is a schematic diagram of the main appearance of this utility model;

[0031] Figure 2 This is a bottom view of the present invention.

[0032] Figure 3 This is a schematic diagram of the main body appearance of the present invention;

[0033] Figure 4 This is a bottom view of the heating plate of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Body; 101. Switch; 102. Control instrument; 103. Heat dissipation hole; 104. Support column; 2. Base; 3. Proximity switch; 4. Heating plate; 401. Through hole; 402. Heat spreader; 403. Heating element. Detailed Implementation

[0036] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figures 1 to 4 As shown, the embodiments provided by this utility model are as follows:

[0038] Example 1

[0039] A plastic mold preheating device includes a body 1, a base 2 connected to the body 1 via a support column 104, and a heating plate 4 mounted on the base 2. The heating plate 4 is composed of multiple heat spreaders 402, each consisting of multiple annular plates with different inner diameters. An electric heating element 403 is located on the center line of the heat spreader 402. This design allows the heat spreader 402 to distribute heat more evenly. Because the heat spreader 402 is composed of multiple annular plates with different inner diameters, it can better adapt to molds of different sizes, ensuring that all parts of the mold receive uniform heating. Meanwhile, the heating element 403 is located on the center line of the heat spreader 402, ensuring that heat is evenly diffused from the center to the surrounding area, further improving the uniformity and efficiency of heating. Each heat spreader 402 has a through hole 401, and a proximity switch 3 is installed at the through hole 401 on the base 2. The heating element 403 is installed at the bottom of the heat spreader 402. Each proximity switch 3 and heating element 403 form a group, and each group of proximity switches 3 and heating elements 403 is individually electrically connected to the controller inside the machine body 1. The controller within the machine body 1 controls independent operation. This design allows the heating process on each heat spreader 402 to be independently controlled. When a mold is placed on a heat spreader 402, only the proximity switch 3 and heating element 403 corresponding to that heat spreader 402 will be activated, while other heat spreaders 402 without molds will not be heated. This independent control method not only improves energy utilization but also avoids equipment damage or safety hazards caused by overheating. At the same time, this design also makes the equipment more flexible and convenient to operate, allowing the heating zone and heating temperature to be adjusted at any time according to actual needs.

[0040] The proximity switch 3 detects whether a mold is installed on the heat spreader 402. When the proximity switch 3 detects a mold on the heat spreader 402, it connects the heating element 403 at the bottom of the heat spreader 402 to the power supply. This design automates the mold preheating process. Once the mold is placed on the heat spreader 402, the proximity switch 3 can immediately detect it and automatically start the heating element 403 to heat it. This not only improves work efficiency but also reduces the tediousness of manual operation and lowers the possibility of uneven heating or energy waste due to human error.

[0041] Example 2

[0042] For ease of control of the device, for example, such as Figures 1 to 4As shown, this utility model also includes: a control instrument 102 mounted on the body 1; a switch 101 mounted on one side of the control instrument 102 on the body 1; heat dissipation holes 103 extending through both sides of the body 1; and two wire holes extending through the body 1, which are respectively used to lay the power lines of the proximity switch 3 and the heating element 403. This design makes the wiring of the equipment neater and more orderly. By laying the power lines of the proximity switch 3 and the heating element 403 in two separate wire holes, the mess and crossing of wires can be avoided, which not only improves the aesthetics of the equipment but also facilitates later maintenance and repair. At the same time, this design also helps to reduce equipment downtime caused by wire failures, improving the reliability and stability of the equipment.

[0043] Working principle:

[0044] The operator places the plastic mold to be preheated on the heat spreader 402 of the heating plate 4. When the mold comes into contact with the heat spreader 402, the proximity switch 3 detects the presence of the mold. The proximity switch 3 is a non-contact detection device that sends a signal when the distance between it and the mold reaches a set threshold.

[0045] After the proximity switch 3 detects the mold, it sends a signal to the controller inside the machine body 1. Upon receiving the signal, the controller immediately activates the heating element 403 corresponding to the proximity switch 3. The heating element 403 then starts working, generating heat and transferring it to the heat spreader 402.

[0046] After receiving heat from the heating element 403, the heat spreader 402 evenly distributes this heat across its entire surface. The mold comes into contact with the heat spreader 402, absorbing heat and gradually preheating. Due to the design of the heat spreader 402, the mold can be heated evenly, avoiding deformation or damage caused by uneven temperature.

[0047] During the preheating process, the heat dissipation holes 103 through both sides of the machine body 1 will dissipate the heat generated inside the equipment to maintain stable operation. At the same time, the control instrument 102 can monitor and display the temperature and operating status of the equipment in real time, and the operator can adjust the preheating temperature and preheating time as needed.

[0048] Once the mold has preheated, proximity switch 3 will detect the mold's departure and send a signal to the controller. Upon receiving the signal, the controller will immediately shut off the heating element 403 corresponding to proximity switch 3, thereby stopping heating and saving energy.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic mold preheating device, comprising a machine body (1), a base (2) connected to the machine body (1) by a support column (104), and a heating disc (4) mounted on the base (2), characterized in that: the heating disc (4) is composed of a plurality of heat plates (402), and a through hole (401) is formed through each heat plate (402), a proximity switch (3) is mounted on the base (2) at the through hole (401), and an electric heating tube (403) is mounted at the bottom end of the heat plate (402); a control instrument (102) is mounted on the machine body (1), a switch (101) is mounted on one side of the machine body (1) at the control instrument (102), and heat dissipation holes (103) are formed through both sides of the machine body (1).

2. The plastic mold preheating device of claim 1, wherein: The proximity switch (3) detects whether a mold is mounted on the heat plate (402), and when the proximity switch (3) detects that a mold is placed on the heat plate (402), the proximity switch (3) connects the electric heating tube (403) at the bottom end of the heat plate (402) to the power supply.

3. The device of claim 1, wherein: The heat plate (402) is composed of a plurality of annular plates with different inner diameters, and the electric heating tube (403) is located on the center line of the heat plate (402).

4. The plastic mold preheating device of claim 1, wherein: Two wire holes are formed through the machine body (1), and the two wire holes are respectively used for laying the power supply lines of the proximity switch (3) and the electric heating tube (403).

5. The device of claim 1, wherein: One proximity switch (3) and one electric heating tube (403) form a group, each group of proximity switch (3) and electric heating tube (403) is independently electrically connected with the controller in the machine body (1), and the independent work is controlled by the controller in the machine body (1).

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