Temperature control device for a bottle blowing machine

Abstract

The utility model relates to a kind of temperature control devices for bottle blowing machine, including the light source mounting plate and heat-collecting mounting plate being oppositely arranged in preheating box, the infrared heating tube is evenly provided on the light source mounting plate, the heat-collecting mounting plate is provided with reflector, the light source mounting plate and heat-collecting mounting plate are also oppositely installed horizontally arranged baffle, the passage that two the baffle between formation accommodates bottle blank conveying belt passes, cooling assembly is provided in the lower portion of the baffle.The utility model has the advantages of simple structure, high temperature control efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging bottle production technology, and in particular to a temperature control device for a blow molding machine. Background Technology

[0002] A blow molding machine is a machine that blows plastic granules or pre-made bottle preforms into bottles using specific processes. Blow molding machines are convenient, fast, and have a large production capacity. Since their emergence, they have replaced most manual blow molding and have been adopted by most beverage companies.

[0003] Before blow molding, the preform is preheated to ensure normal operation of the blow molding machine. Currently, the preheating box uses a row of infrared heating tubes on one side and a reflector on the opposite side to concentrate heat. A conveying channel is reserved in the middle for the preform to enter and exit. Since the heating tubes are constantly working, the temperature may become too high. The temperature sensor will adjust the temperature in time. However, the infrared heating tubes have high heating efficiency and can heat up quickly, but once the temperature is too high, they rely on themselves to cool down, which is less efficient. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a temperature control device for blow molding machines that has a simple structure and high temperature control efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A temperature control device for a blow molding machine includes a light source mounting plate and a heat-concentrating mounting plate arranged opposite each other inside a preheating chamber. Infrared heating tubes are horizontally and evenly arranged on the light source mounting plate, and a reflector is arranged on the heat-concentrating mounting plate. A horizontally arranged partition is also installed opposite the light source mounting plate and the heat-concentrating mounting plate. A channel for accommodating a preform conveyor belt is formed between the two partitions. A cooling assembly is arranged below the partitions. The cooling assembly includes a first ventilation pipe and a second ventilation pipe arranged parallel to each other on the light source mounting plate. The first and second ventilation pipes are connected by a pipe, and a solenoid valve is installed on the pipe. An air inlet pipe is connected to the first ventilation pipe outwards. A first air outlet is provided on the first ventilation pipe facing the heat-concentrating mounting plate. A second air outlet is provided upwards on the second ventilation pipe, passing through the partition. A first exhaust assembly is provided on the heat-concentrating mounting plate facing the first air outlet. The tops of the light source mounting plate and the heat-concentrating mounting plate are connected by a top plate, and a temperature sensor and a second exhaust assembly are provided on the top plate.

[0007] In operation, the preform conveyor belt carries the preform into the channel. The combination of infrared heating tubes corresponding to the preform height begins heating. The light passing through is concentrated by the reflector, forming a stable temperature inside. The baffle plate heats the preform body. The first ventilation duct below the baffle is connected to an external fan. Air enters the first ventilation duct through the inlet pipe and exits through the first outlet, protecting the temperature of the bottle mouth and preventing deformation. The air is then exhausted through the first exhaust assembly to avoid interfering with the internal temperature. A temperature sensor monitors the temperature. If the temperature is too low, the output power of the infrared heating tube is increased to raise the temperature. If the temperature is too high, the solenoid valve opens, and external air flows through the first ventilation duct into the second ventilation duct and blows upwards, exiting through the second exhaust assembly on the top plate, achieving rapid heat removal and efficient cooling.

[0008] Preferably, the first exhaust assembly includes a first opening disposed on the heat-concentrating mounting plate, a first air collecting hood disposed outside the first opening, and a first exhaust pipe disposed outward from the first air collecting hood.

[0009] In this way, when the bottle opening is protected by air cooling, the air can be discharged from the first air collector hood, avoiding turbulence that could affect the temperature at the top. At the same time, the presence of the baffle can reduce heat loss.

[0010] Preferably, the second exhaust assembly includes a second opening on the top plate, a second air collecting hood is provided outside the second opening, and a second exhaust pipe is provided outward from the second air collecting hood.

[0011] In this way, when cooling down, efficient heat flow can be achieved by air entering from the bottom and exiting from the top, which can quickly remove internal heat.

[0012] Preferably, an L-shaped bracket is provided on the back of the light source mounting plate, and a slot is provided on the side wall of the L-shaped bracket. A heating tube mounting bracket is screwed onto the L-shaped bracket.

[0013] In this way, the preheating needs of preforms of different heights can be met by increasing or decreasing the number of heating tubes.

[0014] Preferably, the end of the heating tube mounting bracket is provided with a snap-fit ​​spring.

[0015] This allows for quick replacement of the heating element during use.

[0016] In summary, this solution has the advantages of simple structure and high temperature control efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a temperature control device for a blow molding machine according to the present invention.

[0018] Figure 2This is a structural diagram of the light source mounting plate, infrared heating tube, and cooling assembly.

[0019] Figure 3 This is a schematic diagram of the back structure described in Figure 2.

[0020] Figure 4 This is a schematic diagram of the heat-concentrating mounting plate.

[0021] Figure 5 This is a structural schematic diagram of the top plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] like Figure 1-5 As shown, a temperature control device for a blow molding machine includes a light source mounting plate 1 and a heat-concentrating mounting plate 11 arranged opposite each other inside a preheating chamber. Infrared heating tubes 12 are horizontally and evenly arranged on the light source mounting plate, and a reflector 13 is arranged on the heat-concentrating mounting plate. Horizontally arranged partitions 14 are also installed opposite each other on the light source mounting plate and the heat-concentrating mounting plate. A channel for forming and accommodating a preform conveyor belt passes through is formed between the two partitions. A cooling assembly is arranged below the partitions, and the cooling assembly includes a first ventilation pipe 15 and a second ventilation pipe 16 arranged parallel to each other on the light source mounting plate. The first ventilation pipe and the second ventilation pipe are connected by a pipe 17. A solenoid valve 18 is installed on the pipe. An air inlet pipe 19 is connected to the first ventilation pipe. A first air outlet 2 is provided on the first ventilation pipe facing the heat-gathering mounting plate. A second air outlet 21 is provided on the second ventilation pipe. The second air outlet passes through the partition. A first exhaust assembly is provided on the heat-gathering mounting plate facing the first air outlet. The top of the light source mounting plate and the heat-gathering mounting plate are connected by a top plate 22. A temperature sensor 23 and a second exhaust assembly are provided on the top plate.

[0024] In operation, the preform conveyor belt carries the preform into the channel. The combination of infrared heating tubes corresponding to the preform height begins heating. The light passing through is concentrated by the reflector, forming a stable temperature inside. The baffle plate heats the preform body. The first ventilation duct below the baffle is connected to an external fan. Air enters the first ventilation duct through the inlet pipe and exits through the first outlet, protecting the temperature of the bottle mouth and preventing deformation. The air is then exhausted through the first exhaust assembly to avoid interfering with the internal temperature. A temperature sensor monitors the temperature. If the temperature is too low, the output power of the infrared heating tube is increased to raise the temperature. If the temperature is too high, the solenoid valve opens, and external air flows through the first ventilation duct into the second ventilation duct and blows upwards, exiting through the second exhaust assembly on the top plate, achieving rapid heat removal and efficient cooling.

[0025] Specifically, the mounting bracket, preform conveyor belt, box body, and fan of the preheating box are all commonly used equipment by those skilled in the art and belong to the prior art, so they will not be described in detail here.

[0026] In implementation, the first exhaust assembly includes a first opening 24 disposed on the heat-collecting mounting plate, a first air collecting hood 25 disposed outside the first opening, and a first exhaust pipe 26 disposed outward from the first air collecting hood. In this way, when providing air-cooled protection for the bottle opening, air can be exhausted from the first air collecting hood, avoiding turbulence that could affect the temperature at the top. At the same time, the presence of the partition can reduce heat loss.

[0027] In implementation, the second exhaust assembly includes a second opening 27 disposed on the top plate, a second air collecting hood 28 disposed outside the second opening, and a second exhaust pipe 29 disposed outward from the second air collecting hood. In this way, during cooling, efficient heat flow can be achieved with air entering from the bottom and exiting from the top, which can quickly remove internal heat.

[0028] Specifically, exhaust fans are installed on the outside of both the first and second exhaust pipes to provide directional airflow. This is existing technology and will not be described in detail here.

[0029] In practice, an L-shaped bracket 3 is provided on the back of the light source mounting plate, and a slot 31 is provided on the side wall of the L-shaped bracket. A heating tube mounting bracket 32 ​​is screwed onto the L-shaped bracket. In this way, the preheating needs of preforms of different heights can be met by increasing or decreasing the number of heating tubes.

[0030] In practice, the end of the heating tube mounting bracket is equipped with a snap-fit ​​spring clip 33. This allows for quick replacement of the heating tube during use.

[0031] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A temperature control device for a bottle blowing machine, characterized by comprising: The device includes a light source mounting plate and a heat-gathering mounting plate facing each other inside the preheating chamber. Infrared heating tubes are horizontally and evenly arranged on the light source mounting plate, and a reflector is provided on the heat-gathering mounting plate. A horizontally arranged partition is also installed opposite the light source mounting plate and the heat-gathering mounting plate. A channel for accommodating a preform conveyor belt is formed between the two partitions. A cooling assembly is located below the partitions. The cooling assembly includes a first ventilation pipe and a second ventilation pipe arranged parallel to each other on the light source mounting plate. The first and second ventilation pipes are connected by a pipe, and a solenoid valve is installed on the pipe. An air inlet pipe is connected to the first ventilation pipe, and a first air outlet is provided on the first ventilation pipe facing the heat-gathering mounting plate. A second air outlet is provided on the second ventilation pipe, extending upwards and passing through the partition. A first exhaust assembly is provided on the heat-gathering mounting plate facing the first air outlet. The tops of the light source mounting plate and the heat-gathering mounting plate are connected by a top plate, on which a temperature sensor and a second exhaust assembly are provided.

2. A temperature control device for a bottle blowing machine according to claim 1, characterized in that The first exhaust assembly includes a first opening disposed on the heat-collecting mounting plate, a first air collecting hood disposed outside the first opening, and a first exhaust pipe disposed outward from the first air collecting hood.

3. A temperature control device for a bottle blowing machine according to claim 2, characterized in that The second exhaust assembly includes a second opening on the top plate, a second air collecting hood on the outside of the second opening, and a second exhaust pipe extending outward from the second air collecting hood.

4. A temperature control device for a bottle blowing machine according to claim 1, characterized in that An L-shaped bracket is provided on the back of the light source mounting plate. A slot is provided on the side wall of the L-shaped bracket, and a heating tube mounting bracket is screwed onto the L-shaped bracket.

5. A temperature control device for a bottle blowing machine according to claim 4, characterized in that The heating tube mounting bracket is equipped with a snap-fit ​​spring at its end.

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