Injection molding machine for plastic product processing

Abstract

The invention relates to the technical field of injection molding equipment, and discloses an injection molding machine for plastic product processing, the injection molding machine comprises a workbench, the top of the workbench is fixedly provided with a conveying device and a mold closing device, and the top of the conveying device is fixedly provided with a feeding cylinder; the heat exchange cavity is formed in the outer wall of the conveying device, and the conveying device can heat air in the heat exchange cavity; the air suction assembly sucks out hot air in the heat exchange cavity and recycles the hot air; the adjusting assembly is used for adjusting the hot air suction rate of the air suction assembly. By adjusting the heat recovery rate of the conveying device, different types of molds can be adaptively adjusted, the maximization of the heat recovery effect can be guaranteed, and meanwhile the integrity and the yield of formed parts in the molds can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to an injection molding machine for processing plastic products. Background Art

[0002] The principle of an injection molding machine is similar to that of a syringe. The molten plastic is injected into the mold through the thrust of a screw or plunger, and the product is formed after cooling and solidification. An injection molding machine generally includes a feeding system, a plasticizing system, and a control system. These systems work together to ensure efficient production and quality control of plastic products.

[0003] For example, Chinese patent publication number CN113172824B relates to the field of injection molding equipment, and in particular, to an energy-saving injection molding system and injection molding process, including a mold clamping device, a hydraulic transmission device and a loading barrel, wherein the loading barrel includes a hopper and an injection rod, a sleeve is provided around the outer periphery of the injection rod, an air supply assembly is fixedly connected to the sleeve, and a driving mechanism is provided between the air supply assembly and the mold clamping device; the application helps to reuse the heat emitted by the injection rod, thereby achieving the effect of reducing energy waste of the injection molding machine.

[0004] However, when there is a thin-walled area in the injection mold, the flow resistance of the material flow is too large due to the small injection space and the influence of the viscosity of the material flow itself, which makes the melt unable to continue to flow, resulting in structural defects in the product after injection molding. At present, the way to solve this defect is to increase the melt flow rate. In this case, if this type of injection molding machine maintains the original heat recovery rate, it may cause the initial temperature of the melt to decrease during extrusion, so that the melt does not completely cover the thin-walled area of ​​the mold and cools prematurely, which leads to the problem of short shot. In response to the above-mentioned related technologies, this case focuses on solving the problem of short shot that may be caused by reusing the heat dissipated by the injection rod. Summary of the invention

[0005] The object of the present invention is to provide an injection molding machine for processing plastic products to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: an injection molding machine for processing plastic products, comprising a workbench, a conveying device and a mold clamping device are fixedly installed on the top of the workbench, and a loading barrel is fixedly installed on the top of the conveying device;

[0007] It also includes a heat exchange cavity arranged on the outer wall of the conveying device, and the conveying device can heat the air in the heat exchange cavity;

[0008] It also includes an air suction component for sucking out the hot air in the heat exchange cavity and recycling it for reuse;

[0009] Also included is a regulating component for regulating the rate at which the air suction component draws in hot air.

[0010] Preferably, the air intake assembly comprises a mounting shell fixedly mounted on the top of the heat exchange chamber, a piston body fixedly mounted on the top of the heat exchange chamber, a piston plate slidably mounted inside the piston body, a rotatable third friction wheel mounted on the top of the heat exchange chamber, a first connecting rod rotatably mounted on the top of the third friction wheel, a piston rod rotatably mounted on the top of the first connecting rod through a pin shaft, and the pin shaft can be slidably adjusted up and down in the axial hole of the piston rod, one end of the piston rod passes through the outer wall of the piston body and is fixedly connected to the piston plate, and is slidably connected to the penetration of the piston body;

[0011] The piston body is connected with the inside of the heat exchange chamber through an air intake pipe, and the air intake pipe can only inhale air from the heat exchange chamber. The piston body is connected with an external recycling device through an air outlet pipe, and the air outlet pipe can only exhaust air from the piston body to the outside.

[0012] Preferably, the adjustment component comprises a mounting plate fixedly mounted on the top of the heat exchange chamber, a first friction wheel is rotatably mounted on the outer wall of the mounting plate, the third friction wheel is rotatably mounted on the top of the heat exchange chamber through a second telescopic rod, and the first friction wheel always maintains friction contact with the third friction wheel, an axle seat is fixedly mounted on the top of the heat exchange chamber, a rotating ring is rotatably mounted through the outer wall of the axle seat, a first telescopic rod is slidably sleeved in the rotating ring through a flat key, one end of the first telescopic rod is rotatably mounted on the outer wall of the loading barrel, a second friction wheel is fixedly mounted on the other end of the first telescopic rod, a spring is connected between the second friction wheel and the rotating ring, and the second friction wheel always maintains friction contact with the first friction wheel;

[0013] The first telescopic rod is driven by a motor fixed on the top of the heat exchange chamber.

[0014] Preferably, a plurality of blanking plates are rotatably mounted on the inner wall of the upper barrel, the blanking plates are cross-arranged, and an air hole is penetrated through the outer wall of each blanking plate;

[0015] The air outlet of the air outlet pipe is communicated with the interior of the loading barrel.

[0016] Preferably, a lifting rod is slidably mounted on the inner wall of the loading barrel, a sliding groove is provided on the outer wall of the blanking plate, and a protrusion that can slide in the sliding groove is fixedly connected to the outer wall of the lifting rod;

[0017] Also included is a lifting assembly that enables the lifting rod to move up and down.

[0018] Preferably, the lifting assembly includes a lifting plate fixedly connected to the outer wall of the lifting rod, and the lifting plate can slide up and down in the groove of the outer wall of the loading barrel. A sliding ring is rotatably installed on the outer wall of the telescopic part of the first telescopic rod, and a second connecting rod is rotatably connected between the sliding ring and the lifting plate.

[0019] Preferably, the lifting assembly includes an electric slider fixedly connected to the outer wall of the lifting rod, and the electric slider can slide up and down in the groove of the outer wall of the loading barrel. A pressure sensor for detecting the pressure applied to the rotating ring is fixedly installed inside the shaft seat, and the electric slider is electrically connected to the pressure sensor.

[0020] Preferably, a handle is rotatably mounted on the outer wall of one side of the mounting plate away from the first friction wheel, and the handle is coaxially connected to the first friction wheel. A limit plug is slidably mounted through the outer wall of the handle, and two locking holes for inserting the limit plug are mounted on the outer wall of the mounting shell.

[0021] Preferably, a first gear is fixedly installed on one side of the first telescopic rod close to the outer wall of the upper barrel, a second gear is rotatably installed on the outer wall of the upper barrel, and the second gear is meshed with the first gear, and a stirring plate is rotatably installed on the inner wall of the upper barrel, and the stirring plate is coaxially installed with the second gear.

[0022] Preferably, an exhaust passage is provided at the top of the loading barrel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention can store the heat dissipated in the conveying device by installing a heat exchange cavity on the outer wall of the conveying device, and then suck out the hot air in the heat exchange cavity through the suction component. When it is necessary to perform injection molding on a mold with a thin-walled area, the suction component is first adjusted to reduce the rate at which the hot air is sucked by the suction component to ensure that the melt has a sufficiently high initial temperature when it is extruded, ensuring that the mold is completely filled, thereby avoiding surface and internal defects of the product, improving the appearance and mechanical properties of the product, reducing the downtime and adjustment time caused by under-injection problems, and improving overall production efficiency.

[0025] 2. The present invention drives the third friction wheel to rotate through the driving part, thereby driving the first connecting rod to rotate, and then the piston rod drives the piston plate to reciprocate. During the reciprocating motion of the piston plate, the hot air in the heat exchange chamber will be extracted through the air intake pipe and input into the recovery and reuse equipment through the air outlet pipe. Therefore, by recycling and reusing heat, the demand for external energy can be reduced, thereby reducing energy consumption and production costs, and can reduce energy consumption and waste heat emissions, which helps to reduce carbon emissions and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 It is a front view of the present invention;

[0028] Figure 3 It is a left side view of the present invention;

[0029] Figure 4 This is a partial display diagram of the present invention after removing the installation shell;

[0030] Figure 5 It is a schematic diagram of the second embodiment of the present invention;

[0031] Figure 6 It is a schematic cross-sectional view of the piston body in the present invention;

[0032] Figure 7 It is a cross-sectional schematic diagram of the loading barrel in the present invention;

[0033] Figure 8 It is a three-dimensional schematic diagram of the cutaway view of the upper barrel in the present invention;

[0034] Fig. 9 It is a schematic diagram of the explosion of the blanking plate and the lifting rod in the present invention.

[0035] In the figure: 1. workbench; 2. conveying device; 3. heat exchange chamber; 4. mold clamping device; 5. mounting shell; 6. loading barrel; 7. piston body; 8. piston plate; 9. piston rod; 10. first connecting rod; 11. third friction wheel; 12. air outlet pipe; 13. pin shaft; 14. mounting plate; 15. first friction wheel; 16. second friction wheel; 17. spring; 18. shaft seat; 19. blanking plate; 20. air hole; 21. lifting rod; 22. slide groove; 23. protrusion; 24. handle; 25. stopper; 26. sliding ring; 27. second connecting rod; 28. lifting plate; 29. ​​electric slider; 30. rotating ring; 31. first telescopic rod; 32. second telescopic rod; 33. stirring plate; 34. first gear; 35. second gear; 36. exhaust channel; 37. air intake pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 9The present invention provides a technical solution: an injection molding machine for processing plastic products, comprising a workbench 1, a conveying device 2 and a mold clamping device 4 are fixedly installed on the top of the workbench 1, and a loading barrel 6 is fixedly installed on the top of the conveying device 2;

[0038] It also includes a heat exchange cavity 3 arranged on the outer wall of the conveying device 2, and the conveying device 2 can heat the air in the heat exchange cavity 3;

[0039] It also includes an air suction component for sucking out the hot air in the heat exchange cavity 3 and recycling it for reuse;

[0040] Also included is a regulating component for regulating the rate at which the air suction component draws in hot air.

[0041] See also Figure 1 as well as Figure 2 Before the workpiece needs to be molded, the conveying device 2 is started, and the plastic particles are put into the conveying device 2 through the upper barrel 6. The plastic particles are heated by the conveying device 2 to make the plastic particles molten, and the molten plastic particles are conveyed to the clamping device 4 for molding. In this process, a large part of the heat in the conveying device 2 is directly dissipated into the air, resulting in a waste of energy of the injection molding machine. Therefore, a heat exchange cavity 3 is installed on the outer wall of the conveying device 2 to store the heat dissipated in the conveying device 2. The operator can also apply insulation slurry on the outer wall of the heat exchange cavity 3. When the insulation slurry is dried and solidified, it becomes an insulation layer. The insulation layer can further block the heat dissipation outside the conveying device 2. After the heat is stored, the hot air in the heat exchange cavity 3 is sucked out by the suction component and recycled for reuse.

[0042] When there are thin-walled areas in the injection mold, the melt flow rate can be increased to address this problem. In this state, if the original heat recovery rate is maintained, the initial temperature of the melt may be reduced during extrusion, causing the melt to cool prematurely before completely covering the thin-walled area of ​​the mold, leading to under-injection problems.

[0043] Therefore, when it is necessary to perform injection molding on a mold with a thin-walled area, the suction component is first adjusted to reduce the rate at which the hot air is absorbed by the suction component to ensure that the melt has a sufficiently high initial temperature when it is extruded and the mold is completely filled. This can avoid surface and internal defects of the product, improve the appearance and mechanical properties of the product, reduce downtime and adjustment time caused by under-injection problems, and improve overall production efficiency.

[0044] In this way, by adjusting the heat recovery rate of the conveying device 2, adaptive adjustments can be made to different types of molds, which can not only ensure the maximization of the heat recovery effect, but also ensure the integrity and yield rate of the molded parts in the mold.

[0045] Further, the air intake assembly includes a mounting shell 5 fixedly mounted on the top of the heat exchange chamber 3, a piston body 7 fixedly mounted on the top of the heat exchange chamber 3, a piston plate 8 slidably mounted inside the piston body 7, a rotatable third friction wheel 11 mounted on the top of the heat exchange chamber 3, a first connecting rod 10 rotatably mounted on the top of the third friction wheel 11, a piston rod 9 rotatably mounted on the top of the first connecting rod 10 through a pin 13, and the pin 13 can be slidably adjusted up and down in the axial hole of the piston rod 9, one end of the piston rod 9 penetrates the outer wall of the piston body 7 and is fixedly connected to the piston plate 8, and is slidably connected to the penetration of the piston body 7;

[0046] The piston body 7 is connected to the interior of the heat exchange chamber 3 through the air intake pipe 37, and the air intake pipe 37 can only inhale air from the heat exchange chamber 3. The piston body 7 is connected to the external recycling equipment through the air outlet pipe 12, and the air outlet pipe 12 can only exhaust air from the inside of the piston body 7 to the outside.

[0047] See also Figure 4 as well as Figure 6 When the injection molding machine is working, the third friction wheel 11 will be driven to rotate by the driving part, thereby driving the first connecting rod 10 to rotate, and then the piston rod 9 drives the piston plate 8 to reciprocate. During the reciprocating motion of the piston plate 8, the hot air in the heat exchange chamber 3 will be extracted through the suction pipe 37 and input into the recycling equipment through the outlet pipe 12. Therefore, by recycling and reusing heat, the demand for external energy can be reduced, thereby reducing energy consumption and production costs, and can reduce energy consumption and waste heat emissions, which helps to reduce carbon emissions and environmental pollution.

[0048] Further, the adjustment component includes a mounting plate 14 fixedly mounted on the top of the heat exchange chamber 3, a first friction wheel 15 is rotatably mounted on the outer wall of the mounting plate 14, a third friction wheel 11 is rotatably mounted on the top of the heat exchange chamber 3 through a second telescopic rod 32, and the first friction wheel 15 always maintains friction contact with the third friction wheel 11, a shaft seat 18 is fixedly mounted on the top of the heat exchange chamber 3, a rotating ring 30 is rotatably mounted through the outer wall of the shaft seat 18, a first telescopic rod 31 is slidably sleeved in the rotating ring 30 through a flat key, one end of the first telescopic rod 31 is rotatably mounted on the outer wall of the loading barrel 6, a second friction wheel 16 is fixedly mounted on the other end of the first telescopic rod 31, a spring 17 is connected between the second friction wheel 16 and the rotating ring 30, and the second friction wheel 16 always maintains friction contact with the first friction wheel 15;

[0049] The first telescopic rod 31 is driven by a motor fixed on the top of the heat exchange chamber 3 .

[0050] See also Figure 5The motor at the top of the heat exchange chamber 3 drives the first telescopic rod 31 to rotate through the cooperation of the pulley and the belt, and then the first telescopic rod 31 drives the rotating ring 30 and the second friction wheel 16 to rotate. Since the second friction wheel 16 always maintains friction contact with the first friction wheel 15, the first friction wheel 15 will be driven to rotate during the rotation of the second friction wheel 16, thereby driving the third friction wheel 11 to rotate.

[0051] When it is necessary to perform injection molding on a mold with a thin-walled area, the first friction wheel 15 is adjusted to rotate clockwise to change the contact point between the second friction wheel 16 and the first friction wheel 15, and the angular velocity of the contact point of the second friction wheel 16 gradually decreases, that is, the rotation speed of the third friction wheel 11 slows down, thereby slowing down the reciprocating speed of the piston plate 8, and further slowing down the speed of absorbing hot air from the heat exchange chamber 3. By reducing the reciprocating speed of the piston plate 8 and the rate of absorbing hot air, it is ensured that the melt has a sufficiently high initial temperature when it is extruded. A higher initial temperature can reduce the viscosity of the melt, making it easier to flow, thereby better filling various parts of the mold, especially the thin-walled area, reducing the problem of under-injection, and ensuring the integrity and quality of the product.

[0052] Furthermore, a plurality of blanking plates 19 are rotatably mounted on the inner wall of the upper barrel 6. The blanking plates 19 are arranged crosswise, and each blanking plate 19 has an air hole 20 extending through the outer wall thereof.

[0053] The air outlet of the air outlet pipe 12 is communicated with the interior of the loading barrel 6 .

[0054] Plastic pellets may absorb moisture from the air during storage and transportation. During the injection molding process, moisture will turn into steam, forming bubbles and silver streaks, affecting the appearance and quality of the product. Moisture will also cause uneven plastic melt fluidity, affecting the dimensional accuracy of the injection molded parts and failing to meet design requirements. Moisture will also cause corrosion and wear inside the equipment, shortening the service life of the injection molding machine and mold. Therefore, it is particularly important to dry the plastic pellets.

[0055] See also Figure 8, multiple blanking plates 19 are alternately distributed in the vertical direction in the upper barrel 6, and the plate surface of the blanking plate 19 gradually tilts along the position close to the center of the upper barrel 6. When the plastic particles enter the upper barrel 6, they will gradually roll down along the blanking plate 19. The air outlet pipe 12 is connected to the upper barrel 6, and the hot air in the heat exchange chamber 3 will be introduced into the upper barrel 6. In the process of the plastic particles rolling downward, the air will be continuously blown to the plastic particles through the air holes 20 on the blanking plate 19 to achieve the drying of the plastic particles. In this process, the plastic particles can also be preheated. The dried plastic particles can melt and flow more evenly, reduce internal stress, improve the mechanical strength and durability of the injection molded parts, and reduce surface defects such as bubbles and depressions, etc., improve the appearance quality of the product, and preheating can make the temperature of the plastic particles more uniform when entering the heating barrel, reduce fluctuations in the processing process, and ensure the stability and consistency of the injection molding process.

[0056] Furthermore, a lifting rod 21 is slidably mounted on the inner wall of the loading barrel 6, and a slide groove 22 is provided on the outer wall of the blanking plate 19, and a protrusion 23 that can slide in the slide groove 22 is fixedly connected to the outer wall of the lifting rod 21;

[0057] It also includes a lifting assembly that can move the lifting rod 21 up and down.

[0058] When injection molding is required for a mold having a thin-walled area, the hot air fed back into the upper barrel 6 will be reduced because the rate of hot air absorption needs to be adjusted, which will cause some plastic particles to not be completely dried.

[0059] See also Figure 7 as well as Fig. 9 When injection molding is performed on a mold with a thin-walled area, the lifting rod 21 is adjusted to move upward through the lifting assembly, thereby driving the blanking plate 19 to rotate upward, so that the angle between the blanking plate 19 and the horizontal plane becomes smaller, thereby extending the sliding time of the plastic particles on the surface of the blanking plate 19, so that the hot air entering from the air outlet pipe 12 has enough time to blow the plastic particles, ensuring that the plastic particles entering the conveying device 2 are in a dry state, preventing the water vapor in the plastic particles from interfering with the subsequent injection molding process.

[0060] Embodiment 1 provides an implementation of a lifting assembly;

[0061] Furthermore, the lifting assembly includes a lifting plate 28 fixedly connected to the outer wall of the lifting rod 21, and the lifting plate 28 can slide up and down in the groove of the outer wall of the loading barrel 6. The outer wall of the telescopic part of the first telescopic rod 31 is rotatably installed with a sliding ring 26, and a second connecting rod 27 is rotatably connected between the sliding ring 26 and the lifting plate 28.

[0062] See also Figure 4When it is necessary to perform injection molding on a mold with a thin-walled area, the first friction wheel 15 is rotated clockwise to reduce the rate of absorbing hot air. When the first friction wheel 15 rotates, the first friction wheel 15 cooperates with the second friction wheel 16 to cause the telescopic portion of the first telescopic rod 31 to contract toward the upper barrel 6, thereby driving the sliding ring 26 to move toward the upper barrel 6, and then the lifting plate 28 and the lifting rod 21 are moved upward through the second connecting rod 27. When the lifting rod 21 moves upward, it drives the blanking plate 19 to rotate upward, thereby reducing the angle between the blanking plate 19 and the horizontal plane, so as to achieve the purpose of extending the stay of the plastic particles inside the upper barrel 6 and allowing the plastic particles to be completely dried.

[0063] Embodiment 2 is basically the same as Embodiment 1, and provides a second implementation method of the lifting assembly;

[0064] Furthermore, the lifting assembly includes an electric slider 29 fixedly connected to the outer wall of the lifting rod 21, and the electric slider 29 can slide up and down in the groove of the outer wall of the loading barrel 6. A pressure sensor for detecting the pressure applied to the rotating ring 30 is fixedly installed inside the shaft seat 18, and the electric slider 29 is electrically connected to the pressure sensor.

[0065] See also Figure 5 , which is basically the same as the first embodiment, except that when the telescopic portion of the first telescopic rod 31 retracts toward the upper barrel 6, the spring 17 is compressed, thereby increasing the pressure on the rotating ring 30. When the pressure sensor detects that the pressure of the rotating ring 30 increases, it will be fed back to the electric slider 29, and the electric slider 29 will drive the lifting rod 21 to move upward, thereby driving the blanking plate 19 to rotate upward, so that the angle between the blanking plate 19 and the horizontal plane becomes smaller, so as to achieve the purpose of prolonging the stay of the plastic particles inside the upper barrel 6.

[0066] Furthermore, a handle 24 is rotatably installed on the outer wall of the mounting plate 14 away from the first friction wheel 15, and the handle 24 is coaxially connected to the first friction wheel 15. A limit plug 25 is slidably installed through the outer wall of the handle 24, and two locking holes for inserting the limit plug 25 are installed on the outer wall of the mounting shell 5.

[0067] See also Figure 3 When it is necessary to perform injection molding on a mold having a thin-walled area, the stopper 25 is first pulled out from the first locking hole, and then the handle 24 is turned to insert the stopper 25 into the second locking hole to achieve the purpose of limiting.

[0068] Furthermore, a first gear 34 is fixedly installed on one side of the first telescopic rod 31 close to the outer wall of the upper barrel 6, a second gear 35 is rotatably installed on the outer wall of the upper barrel 6, and the second gear 35 is meshed with the first gear 34, a stirring plate 33 is rotatably installed on the inner wall of the upper barrel 6, and the stirring plate 33 is coaxially installed with the second gear 35.

[0069] See also Figure 4 as well as Figure 7 During the rotation of the first telescopic rod 31, the first gear 34 is driven to rotate, thereby driving the second gear 35 to rotate. During the rotation of the second gear 35, the stirring plate 33 is driven to rotate. Under normal conditions, the plastic particles slide down the blanking plate 19 at a faster speed, and the plastic particles gather at the outlet of the upper barrel 6. Under the action of the rotation and stirring of the stirring plate 33, the plastic particles can be prevented from blocking the outlet of the upper barrel 6.

[0070] When injection molding is required for a mold with a thin-walled area, the angle between the blanking plate 19 and the horizontal direction is small, and the speed of the plastic particles falling to the outlet of the upper barrel 6 is low. The rotation of the stirring plate 33 can make the plastic particles falling to the surface of the stirring plate 33 enter the conveying device 2 faster, thereby increasing the feeding rate.

[0071] Furthermore, an exhaust passage 36 is provided at the top of the loading cylinder 6 .

[0072] An exhaust passage 36 is provided at the top of the upper barrel 6 to allow the air inside the upper barrel 6 to be exhausted into the atmosphere, so as to maintain the air pressure balance inside the upper barrel 6 .

[0073] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for processing plastic products, comprising a workbench (1), characterized in that: A conveying device (2) and a mold clamping device (4) are fixedly installed on the top of the workbench (1), and a loading cylinder (6) is fixedly installed on the top of the conveying device (2); It also comprises a heat exchange cavity (3) arranged on the outer wall of the conveying device (2), and the conveying device (2) is capable of heating the air in the heat exchange cavity (3); It also includes an air suction component for sucking out the hot air in the heat exchange cavity (3) and recycling it for reuse; Also included is a regulating component for regulating the rate at which the air suction component draws in hot air.

2. The plastic product processing injection molding machine according to claim 1, characterized in that: The air intake assembly comprises a mounting shell (5) fixedly mounted on the top of the heat exchange chamber (3); a piston body (7) is fixedly mounted on the top of the heat exchange chamber (3); a piston plate (8) is slidably mounted inside the piston body (7); a rotatable third friction wheel (11) is mounted on the top of the heat exchange chamber (3); a first connecting rod (10) is rotatably mounted on the top of the third friction wheel (11); a piston rod (9) is rotatably mounted on the top of the first connecting rod (10) via a pin shaft (13); and the pin shaft (13) can be slidably adjusted up and down in the axial hole of the piston rod (9); one end of the piston rod (9) passes through the outer wall of the piston body (7) and is fixedly connected to the piston plate (8), and is slidably connected to the penetration point of the piston body (7); The piston body (7) is connected to the interior of the heat exchange chamber (3) via an air intake pipe (37), and the air intake pipe (37) can only inhale air from the heat exchange chamber (3); the piston body (7) is connected to an external recycling device via an air outlet pipe (12), and the air outlet pipe (12) can only exhaust air from the inside of the piston body (7) to the outside.

3. The plastic product processing injection molding machine according to claim 2, characterized in that: The adjustment component comprises a mounting plate (14) fixedly mounted on the top of the heat exchange chamber (3); a first friction wheel (15) is rotatably mounted on the outer wall of the mounting plate (14); the third friction wheel (11) is rotatably mounted on the top of the heat exchange chamber (3) via a second telescopic rod (32); and the first friction wheel (15) and the third friction wheel (11) always maintain friction contact; a shaft seat (18) is fixedly mounted on the top of the heat exchange chamber (3); a rotating ring (30) is rotatably mounted through the outer wall of the shaft seat (18); a first telescopic rod (31) is slidably sleeved in the rotating ring (30) via a flat key; one end of the first telescopic rod (31) is rotatably mounted on the outer wall of the loading barrel (6); a second friction wheel (16) is fixedly mounted on the other end of the first telescopic rod (31); a spring (17) is connected between the second friction wheel (16) and the rotating ring (30); and the second friction wheel (16) and the first friction wheel (15) always maintain friction contact; The first telescopic rod (31) is driven by a motor fixed on the top of the heat exchange chamber (3).

4. The plastic product processing injection molding machine according to claim 3, characterized in that: A plurality of blanking plates (19) are rotatably mounted on the inner wall of the loading cylinder (6), the blanking plates (19) are arranged crosswise, and an air hole (20) is penetrated through the outer wall of each blanking plate (19); The air outlet of the air outlet pipe (12) is in communication with the interior of the loading barrel (6).

5. The plastic product processing injection molding machine according to claim 4, characterized in that: The inner wall of the loading cylinder (6) is slidably mounted with a lifting rod (21), the outer wall of the blanking plate (19) is provided with a sliding groove (22), and the outer wall of the lifting rod (21) is fixedly connected with a protrusion (23) that can slide in the sliding groove (22); It also comprises a lifting assembly capable of moving the lifting rod (21) up and down.

6. The plastic product processing injection molding machine according to claim 5, characterized in that: The lifting assembly comprises a lifting plate (28) fixedly connected to the outer wall of the lifting rod (21), and the lifting plate (28) can slide up and down in a groove on the outer wall of the loading barrel (6) for adjustment. A sliding ring (26) is rotatably installed on the outer wall of the telescopic part of the first telescopic rod (31), and a second connecting rod (27) is rotatably connected between the sliding ring (26) and the lifting plate (28).

7. The plastic product processing injection molding machine according to claim 5, characterized in that: The lifting assembly comprises an electric slider (29) fixedly connected to the outer wall of the lifting rod (21), and the electric slider (29) can slide up and down in a groove on the outer wall of the loading barrel (6) for adjustment. A pressure sensor for detecting the pressure applied to the rotating ring (30) is fixedly installed inside the shaft seat (18), and the electric slider (29) is electrically connected to the pressure sensor.

8. The plastic product processing injection molding machine according to claim 5, characterized in that: A handle (24) is rotatably mounted on the outer wall of one side of the mounting plate (14) away from the first friction wheel (15), and the handle (24) is coaxially connected to the first friction wheel (15). A limit plug (25) is slidably mounted through the outer wall of the handle (24), and two locking holes capable of inserting the limit plug (25) are mounted on the outer wall of the mounting housing (5).

9. The plastic product processing injection molding machine according to claim 8, characterized in that: A first gear (34) is fixedly mounted on one side of the first telescopic rod (31) close to the outer wall of the loading barrel (6); a second gear (35) is rotatably mounted on the outer wall of the loading barrel (6), and the second gear (35) is meshed with the first gear (34); a stirring plate (33) is rotatably mounted on the inner wall of the loading barrel (6), and the stirring plate (33) and the second gear (35) are coaxially mounted.

10. The injection molding machine for processing plastic products according to any one of claims 1 to 9, characterized in that: An exhaust passage (36) is provided at the top of the loading cylinder (6).

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