Double-runner plastic profile auxiliary forming equipment

Abstract

The invention relates to the technical field of plastic profile auxiliary forming, in particular to double-flow-channel plastic profile auxiliary forming equipment which comprises a shell internally provided with an air supply flow channel, a sensing device, a first partition plate and a plugging device. The shell is provided with an air inlet and a flow dividing opening which are communicated with the air supply flow channel, and the first partition plate is provided with an exhaust opening; an exhaust flow channel is formed in the shell and communicates with the air inlet and the air outlet, the induction device comprises an upper induction soft magnet and a lower induction soft magnet, the upper induction soft magnet is installed at the bottom of the first partition plate, and the lower induction soft magnet is installed on the side, close to the first partition plate, of the plugging device. According to the equipment, double runners are adopted, when the sensed temperature is higher than the specified temperature, the plugging device blocks the exhaust runner, and when the sensed temperature is lower than the specified temperature, the plugging device blocks the air supply runner, so that the situation that air is blown to a profile when the temperature is low is avoided, the mold blocking condition is reduced, and the impact mechanical property of the profile can be guaranteed; and compared with an electronic element, the induction soft magnet is more suitable for a long-term high-temperature and high-humidity environment.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic profile auxiliary forming, and more specifically, to a double-channel plastic profile auxiliary forming device. Background Art

[0002] The production of plastic profiles usually adopts the extrusion molding method. During production, the material is extruded from the die installed at the end of the extruder to form a melt-shaped profile blank. Then, it enters the sizing die under the traction of the traction machine for cooling and sizing. However, due to the relatively complex structure of the profile, it is difficult for the melt-shaped blank to enter the sizing die. Moreover, during the extrusion production process, the material will be affected by formula materials, equipment, and some human factors, resulting in dimensional deviations and wavy appearances, which are more likely to cause the sizing die to be blocked during the production process.

[0003] Currently, in order to solve the problem of die blockage during the production of profiles, plastic profile auxiliary forming devices such as negative pressure sizing water tanks and air distributors are usually used. For plastic profiles with a non-closed-loop structure in terms of product appearance, such as profiles with a single-wall structure, the negative pressure sizing water tank cannot play an auxiliary forming role; by using an air distributor and blowing with compressed air, it is possible to achieve the functions of quickly cooling and curing the single-wall structure profile and supporting the plastic blank, avoiding the problem of a large number of defective products caused by the plastic blank being blocked in front of the sizing die.

[0004] For example, Chinese Patent No. CN 217454843 U discloses an auxiliary forming device for plastic profiles, which includes a diverter body with an air cavity formed inside. The diverter body is provided with an air inlet communicating with the air cavity and a plurality of diversion ports. The air inlet is connected to an external compressed air source, and a gas diversion device is installed on each diversion port. The gas diversion device diverts and introduces the compressed gas to the position where the profile blank needs to be cooled. This utility model overcomes the problem that the production process of existing plastic profiles is prone to die blockage, resulting in the profile blank being unable to smoothly enter the sizing die, and can assist the extrusion process of plastic profiles. By using compressed air to preliminarily cool and size the position where the profile blank of the plastic profile is difficult to enter the sizing die locally, the production efficiency and qualification rate of the product are greatly improved. Since the temperature of the molten plastic between the die and the sizing die is affected by the ambient temperature, if cold air is continuously blown on the molten plastic profile using this device in a low-temperature external environment, the plastic blank will be rapidly cooled and cured, resulting in brittleness of the product and reducing the physical impact resistance of the product. Summary of the Invention

[0005] The object of the present invention is to overcome the problem that using a gas distributor regulator to assist in forming in an environment with a relatively low temperature in the prior art will cause brittleness of plastic profiles and reduce performance, and to provide a double-channel plastic profile auxiliary forming device, which can stop blowing air on the plastic profile when the ambient temperature is low, avoid rapid cooling and solidification of the plastic blank, and reduce performance.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is:

[0007] Provide a double-channel plastic profile auxiliary forming device, including a housing with an air delivery channel formed inside, a sensing device, a first partition installed in the housing, and a blocking device installed in the housing. An air inlet communicating with the air delivery channel and a plurality of shunt ports are formed on the housing. The air inlet is connected to an external compressed air source. An exhaust port is formed on the first partition. An exhaust channel is further formed inside the housing, and the exhaust channel communicates with the air inlet and the exhaust port. The sensing device includes an upper sensing soft magnet and a lower sensing soft magnet. The upper sensing soft magnet is installed at the bottom of the first partition, and the lower sensing soft magnet is installed on one side of the blocking device close to the first partition. When the sensed temperature is higher than the specified temperature, the upper sensing soft magnet and the lower sensing soft magnet lose magnetism, and the blocking device blocks the exhaust channel. When the sensed temperature is lower than the specified temperature, the upper sensing soft magnet and the lower sensing soft magnet have magnetism and attract each other, and the blocking device blocks the air delivery channel.

[0008] An auxiliary forming device for a double-channel plastic profile according to the present invention is installed at the feed inlet of a sizing die. The air inlet is externally connected to a compressed air source. The shunt port is communicated with the air inlet, and an air supply channel is formed between the shunt port and the air inlet. An exhaust flow channel is formed between the exhaust port and the air inlet. When the material is extruded from the die at the end of the extruder, it will enter the feed inlet of the sizing die under the traction of the tractor. The upper induction soft magnet and the lower induction soft magnet can sense temperature and have the characteristics of heating and demagnetization. Among them, the induction temperature refers to the temperature of the connection space between the sizing die and the die, which is approximately equal to the temperature of the molten plastic between the sizing die and the die, and it will be affected by the ambient temperature. The lower the ambient temperature, the lower the induction temperature. The specified temperature is a temperature standard determined artificially. If blowing air continues when the induction temperature is lower than the specified temperature, the probability of the profile becoming brittle will increase. For the induction soft magnet, the specified temperature is an interval. When the induction temperature is higher than the specified temperature, the upper induction soft magnet and the lower induction soft magnet lose their magnetism, and the blocking device blocks the exhaust flow channel under the action of gravity. Compressed air flows out from each shunt port to blow air at multiple parts of the profile, accelerating the cooling and solidification of the profile, enabling the profile to smoothly enter the sizing die and avoiding the phenomenon of die blockage. When the induction temperature is higher than the specified temperature, the upper induction soft magnet and the lower induction soft magnet recover their magnetism, and they attract each other, thereby driving the blocking device to do work against gravity to block the air supply channel. Compressed air only flows in the exhaust flow channel and is discharged from the exhaust port, avoiding the too-fast cooling and solidification speed of the profile caused by continuous blowing, resulting in brittleness of the product and reducing the physical impact resistance of the product. This device adopts a double-channel. The upper induction soft magnet and the lower induction soft magnet block different channels according to the change of temperature, avoiding continuous blowing of the profile at low temperatures, reducing the die blockage situation during the production process and ensuring the impact mechanical properties of the profile at the same time. Moreover, the induction soft magnet can better adapt to the long-term high-temperature and high-humidity working environment compared with electronic control components, and has better stability.

[0009] Furthermore, a second partition is provided inside the housing. An air supply port is formed in the second partition. The air supply port is located at the air supply flow path. The air inlet is located between the first partition and the second partition. The blocking device includes a rocker arm, a first blocking plate connected to the rocker arm respectively, and a second blocking plate connected to the first blocking plate. One end of the rocker arm is rotatably connected to the inner wall of the housing. The rocker arm is provided with a gas guiding port. When the upper induction soft magnet and the lower induction soft magnet attract each other, the first blocking plate abuts against the bottom of the second partition. When the upper induction soft magnet and the lower induction soft magnet lose magnetism, the second blocking plate covers the exhaust port. When the sensed temperature is lower than the specified temperature, the upper induction soft magnet and the lower induction soft magnet attract each other, the rocker arm rotates, driving the first blocking plate to abut against the bottom of the second partition. An exhaust flow path is formed among the first blocking plate, the first partition and the second partition, and the compressed air is discharged from the exhaust port. When the sensed temperature is higher than the specified temperature, the upper induction soft magnet and the lower induction soft magnet lose magnetism, the rocker arm returns to its original state under the action of gravity, the second blocking plate covers the exhaust port, and an air supply flow path is formed among the first partition, the second partition, the third blocking plate and the housing, and the compressed air is discharged from the shunt port.

[0010] Furthermore, the blocking device further includes a third blocking plate connected to the rocker arm. When the upper induction soft magnet and the lower induction soft magnet attract each other, the third blocking plate abuts against the bottom of the first partition. The gas guiding port is located between the first blocking plate and the third blocking plate. The setting of the third blocking plate cuts off the connection between the upper induction soft magnet, the lower induction soft magnet and the exhaust flow path, avoiding the influence on the temperature sensed by the induction soft magnet.

[0011] Furthermore, a ventilation window is formed in the housing. The ventilation window is located on one side of the sensing device and communicates with the position where the sensing device is located. The setting of the ventilation window facilitates heat transfer, reduces heat loss, ensures that the temperature sensed by the sensing device is closer to the temperature of the profile, and has better accuracy.

[0012] Furthermore, an air inlet valve is provided at the air inlet. The air inlet valve is provided with an adjustment knob for adjusting the air flow rate. By rotating the adjustment knob, the air flow rate can be controlled, thereby controlling the wind speed at the shunt port, and further controlling the cooling speed, with better adjustability.

[0013] Furthermore, a gas guiding device is further included. The gas guiding device is arranged at the shunt port. The gas guiding device is used for diverting and guiding the compressed gas into the positions of the preform to be cooled. When the compressed air flows out from the exhaust port and enters the gas guiding device, the gas guiding device can guide the flow direction of the compressed air, so that the air can blow to the positions to be cooled.

[0014] Further, the gas guiding device includes an air supply valve disposed at the shunt port, and a connecting conduit detachably connected to the air supply valve. The connecting conduit diverts and introduces compressed gas into the positions of the extrusion equipment sizing die that need to be cooled. The connecting conduit extends the position of the air supply, and the air supply valve can also adjust the air outlet speed, with better adjustability.

[0015] Further, the connecting conduit is a flexible hose, and a first magnetic member is further disposed outside the connecting conduit. The first magnetic member is used to fix the connecting conduit on the sizing die. The connecting conduit is a flexible hose, which is convenient for adjusting the position and angle of the air outlet of the connecting conduit, so as to cool different positions of the profile. The first magnetic member fixes the connecting conduit on the sizing die to prevent it from falling off.

[0016] Further, the housing includes a cover and a box body. A second magnetic member is further disposed on the side wall of the box body. The cover and the box body are fixed by the second magnetic member, and a sealing soft rubber is further disposed at the connection between the cover and the box body. The setting of the cover facilitates observing the internal situation of the box body, facilitating maintenance and replacement of parts. The cover can be quickly opened and installed through the second magnetic member, with faster disassembly and assembly and better convenience. The setting of the sealing soft rubber ensures the sealing performance of the housing and reduces air flow loss.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The device adopts a double flow channel. The upper induction soft magnet and the lower induction soft magnet block different flow channels according to the temperature change, avoiding continuously blowing air on the profile when the temperature is low, reducing the mold blocking situation during the production process while ensuring the impact mechanical properties of the profile. Moreover, the induction soft magnet can better adapt to the long-term high-temperature and high-humidity working environment compared with electronic control components, with better stability;

[0019] 2. The setting of the air permeable window facilitates heat transfer, reduces heat loss, and ensures that the temperature sensed by the induction device is closer to the temperature of the profile, with better accuracy;

[0020] 3. The settings of the air supply valve and the adjustment knob. By rotating the adjustment knob, the flow rate of the air flow can be controlled, thereby controlling the air speed at the shunt port, and further controlling the cooling speed, with better adjustability;

[0021] 4. The setting of the gas guiding device guides the flow direction of the compressed air, so that the air can be blown to the positions that need to be cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a double-flow channel plastic profile auxiliary forming device;

[0023] Figure 2It is a schematic structural diagram of the housing;

[0024] Figure 3 It is a schematic structural diagram when the exhaust flow channel is blocked;

[0025] Figure 4 It is a schematic structural diagram when the air supply flow channel is blocked;

[0026] Figure 5 It is a schematic structural diagram of the plugging device.

[0027] In the drawings: 100, housing; 110, air inlet; 120, shunt port; 130, first partition; 131, exhaust port; 140, second partition; 141, air supply port; 150, ventilation window; 160, cover; 170, box body; 180, second magnetic member; 200, gas guiding device; 210, air supply valve; 220, connecting conduit; 230, first magnetic member; 300, induction device; 310, upper induction soft magnet; 320, lower induction soft magnet; 400, plugging device; 410, rocker arm; 420, first plugging plate; 430, second plugging plate; 440, third plugging plate; 450, air guiding port; 500, air inlet valve. Specific Embodiments

[0028] The present invention will be further described below in conjunction with specific embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, rather than actual diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] A double-channel plastic profile auxiliary forming device, as Figures 1-5As shown in the figure, it includes a housing 100 with an air supply channel and an exhaust channel internally, a sensing device 300, and a blocking device 400 installed in the housing 100. A first partition 130 and a second partition 140 are fixed inside the housing 100. An air inlet 110 communicating with the air supply channel and four shunt ports 120 are provided on the housing 100. In addition, the number and positions of the shunt ports 120 can also be changed according to the size and shape of the product. The air inlet 110 is connected to an external compressed air source. The air inlet 110 is located between the first partition 130 and the second partition 140. The first partition 130 is provided with an exhaust port 131. The exhaust channel communicates the air inlet 110 and the exhaust port 131. A gas supply port 141 is provided on the second partition 140. The gas supply port 141 is located at the air supply channel. In this embodiment, the sensing device 300 includes an upper sensing soft magnet 310 and a lower sensing soft magnet 320. The blocking device 400 includes a rocker arm 410, a first blocking plate 420, a third blocking plate 440 respectively connected to the rocker arm 410, and a second blocking plate 430 connected to the first blocking plate 420. The rocker arm 410 is located at the bottom of the first partition 130. The upper sensing soft magnet 310 is installed at the bottom of the first partition 130. The lower sensing soft magnet 320 is installed on the side of the rocker arm 410 close to the first partition 130. One end of the rocker arm 410 is rotatably connected to the inner wall of the housing 100. The rocker arm 410 is provided with a gas guiding port 450. The gas guiding port 450 is located between the first blocking plate 420 and the second blocking plate 430. When the sensed temperature is greater than the specified temperature, the upper sensing soft magnet 310 and the lower sensing soft magnet 320 attract each other. The first blocking plate 420 is located in the exhaust port 131 and abuts against the bottom of the second partition 140. The third blocking plate 440 abuts against the bottom of the first partition 130. When the sensed temperature is less than the specified temperature, the upper sensing soft magnet 310 and the lower sensing soft magnet 320 lose magnetism, and the second blocking plate 430 covers the exhaust port 131.

[0032] The working principle of this embodiment is as follows:

[0033] An auxiliary forming device for a double-channel plastic profile of the present invention is installed at the feeding port of a shaping die. The air inlet 110 is externally connected to a compressed air source. The shunt port 120 is communicated with the air inlet 110, and an air supply channel is formed between the shunt port 120 and the air inlet 110. An exhaust channel is formed between the exhaust port 131 and the air inlet 110. When the material is extruded from the die at the end of the extruder, it will enter the feeding port of the shaping die under the traction of a tractor. The induction device 300 can sense the current induction temperature, which refers to the temperature of the connection space between the shaping die and the die, approximately equal to the temperature of the molten plastic between the shaping die and the die, and it will be affected by the ambient temperature. The lower the ambient temperature, the lower the induction temperature. The specified temperature is a temperature standard determined artificially. In this embodiment, it is a temperature range. In this embodiment, the specified temperature is 100°-105°. If the induction temperature is lower than 100° and continuous blowing still occurs, the probability of the target profile becoming brittle will increase. As Figure 3 shown, during the production process, if the indoor temperature is relatively high at this time and the induction temperature is higher than 105°, the upper induction soft magnet 310 and the lower induction soft magnet 320 lose magnetism, and the rocker arm 410 returns to its original state under the action of gravity. The second sealing plate 430 covers the exhaust port 131. An air supply channel is formed between the first partition plate 130, the second partition plate 140, the second sealing plate 430 and the housing 100. Compressed air only flows in the air supply channel. The compressed air flows out from each shunt port 120 to blow air on multiple parts of the profile, accelerating the cooling and solidification of the profile, enabling the profile to smoothly enter the shaping die and avoiding the phenomenon of die blockage. As Figure 4 shown, if the indoor temperature is relatively low at this time and the induction temperature is lower than 100°, the upper induction soft magnet 310 and the lower induction soft magnet 320 attract each other, the rocker arm 410 rotates, the first sealing plate 420 abuts against the bottom of the second partition plate 140, and the first sealing plate 420 cuts off the connection between the shunt port 120 and the air inlet 110. The third sealing plate 440 abuts against the bottom of the first partition plate 130. An exhaust channel is formed between the first partition plate 130, the second partition plate 140, the first sealing plate 420 and the third sealing plate 440. Compressed air only flows in the exhaust channel. The compressed air is discharged from the exhaust port 131, avoiding the product from becoming brittle due to too fast cooling and solidification speed and reducing the physical impact resistance of the product.

[0034] The beneficial effects of this embodiment are as follows:

[0035] The device adopts a double-channel design. When the sensed temperature is lower than 100°, the blocking device 400 blocks the air supply channel. When the sensed temperature is higher than 105°, the blocking device 400 blocks the exhaust air channel, preventing continuous blowing on the profile when the sensed temperature is low. This reduces the occurrence of die blockage during the production process and also avoids brittleness in the profile, ensuring the impact mechanical properties of the profile. The sensing device 300 uses an upper sensing soft magnet 310 and a lower sensing soft magnet 320, whose magnetism can change according to temperature changes, thereby controlling the blocking device 400 to block the exhaust air channel or the air supply channel. The sensing soft magnet simultaneously realizes the functions of sensing and driving, and is more adaptable to long-term high-temperature and high-humidity working environments compared to electronic components, with better stability.

[0036] In addition, the specified temperature value can be changed according to actual needs.

[0037] Embodiment 2

[0038] This embodiment is the second embodiment of a double-channel plastic profile auxiliary forming device. This embodiment is similar to Embodiment 1, except that the sensing device 300 is a temperature sensor, and the blocking device 400 further includes a driving motor fixed to the inner wall of the housing 100, and the rocker arm 410 is installed at the output end of the driving motor.

[0039] The working principle of this embodiment is as follows:

[0040] After the temperature sensor senses the temperature, if the result is higher than the specified temperature, the driving motor does not operate, and the rocker arm 410 is in the initial state, and the exhaust air channel is closed. When the temperature sensor feedback result is greater than the specified temperature, the driving motor drives the rocker arm 410 to rotate to block the air supply channel. Although using a driving motor and a temperature sensor has higher accuracy, it is prone to damage in high-temperature, high-humidity, and charged working environments, resulting in an increase in costs.

[0041] The rest of the working principle of this embodiment is the same as that of Embodiment 1.

[0042] Embodiment 3

[0043] This embodiment is the third embodiment of a double-channel plastic profile auxiliary forming device. This embodiment is similar to Embodiment 1, except that, as Figure 1 and Figure 2 shown, it further includes a gas diversion device 200. An intake valve is provided at the intake port 110, and the intake valve is provided with an adjustment knob for adjusting the air flow rate. The gas diversion device 200 includes an air supply valve 210 provided at the diversion port 120, a connecting conduit 220 detachably connected to the air supply valve 210, and a first magnetic member 230 fixed to the outside of the connecting conduit 220. The connecting conduit 220 diverts and introduces compressed gas to the position that needs to be cooled in the shaping die of the extrusion equipment. The connection between the first magnetic member 230 and the connecting conduit 220 is glued.

[0044] The working principle of this embodiment is as follows:

[0045] By rotating the adjustment knob, the flow rate of the air flow can be controlled, thereby controlling the wind speed at the shunt port 120, and further controlling the cooling speed. The adjustability is better. The connecting duct 220 extends the position of the air supply. The air supply valve 210 can also adjust the air outlet speed, and the adjustability is better. The connecting duct 220 is a flexible hose, which is convenient for adjusting the position and angle of the air outlet of the connecting duct 220, so as to cool different positions of the profile. The first magnetic member 230 fixes the connecting duct 220 on the shaping die to prevent it from falling off.

[0046] Embodiment Four

[0047] This embodiment is the fourth embodiment of an auxiliary forming device for a double-channel plastic profile. This embodiment is similar to Embodiment Three, the difference being that, as Figure 1 and Figure 2 shown, the housing 100 includes a cover 160 and a box body 170. A second magnetic member 180 is further provided on the side wall of the box body 170. The cover 160 and the box body 170 are fixed by the second magnetic member 180. A sealing soft rubber is also provided at the connection between the cover 160 and the box body 170. An air permeable window 150 is opened on the housing 100, and the air permeable window 150 is located on one side of the sensing device 300.

[0048] The working principle of this embodiment is as follows:

[0049] The setting of the cover 160 facilitates observing the internal situation of the box body 170, facilitating maintenance and replacement of parts. The cover 160 can be quickly opened and installed through the second magnetic member 180, and the disassembly and assembly are faster and more convenient. The setting of the sealing soft rubber ensures the sealing performance of the housing 100 and reduces air flow loss.

[0050] In the specific content of the above specific embodiments, the technical features can be combined arbitrarily without contradiction. For the sake of brevity of description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope described in this specification.

[0051] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should all be included within the protection scope of the claims of the present invention.

Claims

1. A double-flow channel plastic profile auxiliary molding device, comprising a housing (100) with a supply flow channel provided therein, an air inlet (110) and a plurality of flow diversion ports (120) provided on the housing (100) and connected to the supply flow channel, the air inlet (110) being connected to an external compressed air source, characterized in that: The invention also comprises an induction device (300), a first partition (130) installed in the shell (100), and a blocking device (400) installed in the shell (100), wherein the first partition (130) is provided with an exhaust port (131), and an exhaust flow channel is also provided inside the shell (100), wherein the exhaust flow channel communicates with the air inlet (110) and the exhaust port (131), and the induction device (300) comprises an upper induction soft magnet (310) and a lower induction soft magnet (320), wherein the upper induction soft magnet (310) is installed in the shell (100). At the bottom of the first baffle (130), the lower induction soft magnet (320) is installed on the side of the blocking device (400) close to the first baffle (130). When the induction temperature is higher than a specified temperature, the upper induction soft magnet (310) and the lower induction soft magnet (320) lose their magnetism, and the blocking device (400) blocks the exhaust flow channel; when the induction temperature is lower than the specified temperature, the upper induction soft magnet (310) and the lower induction soft magnet (320) have magnetism and attract each other, and the blocking device (400) blocks the supply flow channel.

2. The dual-flow channel plastic profile auxiliary molding equipment according to claim 1, characterized in that: A second partition (140) is further provided inside the shell (100), an air supply port (141) is provided on the second partition (140), and the air supply port (141) is located at the air supply flow channel, the air inlet (110) is located between the first partition (130) and the second partition (140), and the blocking device (400) comprises a rocker arm (410), a first blocking plate (420) respectively connected to the rocker arm (410), and a second blocking plate connected to the first blocking plate (420). (430), one end of the rocker arm (410) is rotatably connected to the inner wall of the shell (100), and the rocker arm (410) is provided with an air guide port (450). When the upper induction soft magnet (310) and the lower induction soft magnet (320) attract each other, the first sealing plate (420) abuts against the bottom of the second partition plate (130). When the upper induction soft magnet (310) and the lower induction soft magnet (320) lose their magnetism, the second sealing plate (430) covers the exhaust port (131).

3. The dual-flow channel plastic profile auxiliary molding equipment according to claim 2, characterized in that: The sealing device (400) also includes a third sealing plate (440) connected to the rocker arm (410). When the upper induction soft magnet (310) and the lower induction soft magnet (320) are attracted to each other, the third sealing plate (440) abuts against the bottom of the first partition plate (130), and the air guide port (450) is located between the first sealing plate (420) and the third sealing plate (430).

4. The dual-flow channel plastic profile auxiliary molding equipment according to claim 1, characterized in that: The housing (100) is provided with a ventilation window (150), and the ventilation window (150) is located on one side of the sensing device (300) and is connected to the location where the sensing device (300) is located.

5. The dual-flow channel plastic profile auxiliary molding equipment according to claim 1, characterized in that: The air inlet (110) is provided with an air inlet valve (500), and the air inlet valve (500) is provided with an adjustment knob for adjusting the air flow rate.

6. The dual-flow channel plastic profile auxiliary molding equipment according to claim 1, characterized in that: It also includes a gas guide device (200), which is arranged at the diversion port (120) and is used to divert the compressed gas to a position where the molded blank needs to be cooled.

7. The dual-flow channel plastic profile auxiliary molding device according to claim 6, characterized in that: The gas flow guiding device (200) comprises an air supply valve (210) arranged on the diversion port (120), and a connecting conduit (220) detachably connected to the air supply valve (210), wherein the connecting conduit (220) diverts the compressed gas to a position where the shaping die of the extrusion equipment needs to be cooled.

8. The dual-flow channel plastic profile auxiliary molding device according to claim 7, characterized in that: The connecting conduit (220) is a hose, and a first magnetic component (230) is further provided on the outside of the connecting conduit (220). The first magnetic component (230) is used to fix the connecting conduit (220) on the molding die.

9. A dual-channel plastic profile auxiliary molding device according to any one of claims 1 to 8, characterized in that: The housing (100) comprises a cover (160) and a box body (170); a second magnetic member (180) is further provided on a side wall of the box body (170); and the cover (160) and the box body (170) are fixed via the second magnetic member (180).

10. A dual-flow channel plastic profile auxiliary molding device according to any one of claims 1 to 8, characterized in that: A sealing soft glue is also provided at the connection between the sealing cover (160) and the box body (170).

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