Plastic part hollowing forming equipment

Abstract

This utility model discloses a plastic part hollowing molding equipment, belonging to the technical field of plastic part processing equipment. It includes a vacuum feeding system and a blow molding system. The vacuum feeding system includes a material cylinder fixedly connected to the feeding end of the blow molding system. A vacuum suction component is installed on the top of the material cylinder, and an anti-clogging component is installed inside the material cylinder. Through this method, after the vacuum suction component sucks plastic particles into the material cylinder, a servo motor drives a driving bevel gear to rotate. The driving bevel gear meshes with a driven bevel gear, causing it to rotate. The driven bevel gear drives a cleaning frame to rotate and agitate. This rotational action keeps the plastic particles inside the material cylinder in a near-flowing state, significantly reducing the probability of the plastic particles clogging the inside of the material cylinder due to the formation of arched structures from mutual stacking, thus ensuring smooth feeding of plastic particles and improving the reliability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic parts processing equipment, specifically to a plastic parts hollowing forming equipment. Background Technology

[0002] The blow molding machine system consists of a vacuum feeding module, a raw material pretreatment module, an extrusion blow molding module, and an intelligent control module, realizing fully automated production of plastic granules from conveying and mixing to molding products. Among them, the vacuum feeding machine, as a key subsystem, mainly consists of five parts: a vacuum generating device, a conveying pipeline system, a separation and filtration unit, a hopper and unloading mechanism, and an intelligent control system.

[0003] In actual operation, the vacuum feeder uses negative pressure to draw a fixed amount of plastic granules from the raw material bin into the vacuum chamber. However, because the bottom of the vacuum chamber is usually designed with a conical structure, when the amount of material accumulated inside the chamber is large, significant surface friction is generated between the plastic granules, causing them to stack together and form an arch-like structure. This "bridging" phenomenon severely hinders the normal discharge of material and is the main cause of blockage malfunctions in the vacuum feeder.

[0004] Based on this, the present invention designs a plastic part hollowing molding equipment to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a plastic part hollowing molding equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic part cutout molding equipment includes a vacuum feeding system and a blow molding system. The vacuum feeding system includes a material cylinder fixedly connected to the feeding end of the blow molding system. A vacuum suction component is installed on the top of the material cylinder, and an anti-clogging component is installed inside the material cylinder.

[0008] Furthermore, the anti-clogging component includes a protective frame and a servo motor. The protective frame is fixedly connected to the inner wall of the material cylinder, and the servo motor is fixedly connected to the surface of the material cylinder. The end of the output shaft of the servo motor passes through the material cylinder and extends into the interior of the protective frame. The end of the output shaft of the servo motor is fixedly connected to a driving bevel gear. The surface of the driving bevel gear is meshed with a driven bevel gear that is rotatably connected to the protective frame. The bottom of the driven bevel gear is fixedly connected to a unclogging frame.

[0009] Furthermore, the drain cleaning frame is in the shape of a cone-shaped hollow frame, and the corners of the drain cleaning frame are rounded.

[0010] Furthermore, the protective frame is shaped like a hollow three-dimensional cross, and its edges and corners are rounded.

[0011] Furthermore, the vacuum feeding system also includes a reinforced unblocking component, which includes a rectangular tube fixedly connected to the bottom of the driven bevel gear, a rectangular rod slidably connected to the inner side of the rectangular tube, a circular block fixedly connected to the bottom of the rectangular rod and fixedly connected to the unblocking frame, an annular wave groove on the surface of the circular block, and a guide block fixedly connected to the protective frame slidably connected to the inner side of the annular wave groove.

[0012] Furthermore, the inner side of the protective frame is provided with an annular cavity, the inner diameter of which is larger than the inner diameter of the lower opening of the protective frame, and the circular block is slidably connected to the inside of the annular cavity.

[0013] Furthermore, the guide block has a cylindrical cross-sectional shape, and one end of the guide block located inside the annular wave groove has a rounded corner.

[0014] Furthermore, the guide block is initially in contact with the inner top wall of the annular wave groove.

[0015] Furthermore, a sealing ring is embedded in the inner side of the protective frame, and the sealing ring is fitted onto the surface of the drain cleaning frame.

[0016] Compared to existing technologies, this invention offers the following advantages: After the vacuum suction assembly draws plastic granules into the material cylinder, a servo motor drives the active bevel gear to rotate. The active bevel gear meshes with the driven bevel gear, causing it to rotate. The driven bevel gear then drives the unblocking frame to rotate and agitate. This rotational motion keeps the plastic granules inside the cylinder in a near-flowing state, significantly reducing the probability of the granules clogging the cylinder due to arching structures. This ensures smooth material feeding and improves the reliability of the equipment.

[0017] When the driven bevel gear rotates, it drives the rectangular tube to rotate. The rectangular tube then drives the circular block to rotate via a rectangular rod. Simultaneously, the guide block slides within the annular corrugated groove, forcing the circular block to reciprocate and move up and down. This action enables the unblocking frame to rotate three-dimensionally, expanding the unblocking range for plastic granules within the material cylinder, further improving the anti-clogging effect, ensuring efficient material conveying, and preventing production interruptions due to accumulation failures in the vacuum feeding system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a plastic part hollowing molding equipment according to the present invention;

[0020] Figure 2 This is a partial structural diagram of the vacuum feeding system in a plastic part hollowing molding equipment according to the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0022] Figure 4 This is a schematic diagram showing the connection between the anti-clogging component and the reinforcing unblocking component in a plastic part hollowing molding equipment according to this utility model;

[0023] Figure 5 This is an exploded view of a portion of the anti-clogging component and the enhanced unblocking component in a plastic part hollowing molding equipment according to this utility model.

[0024] The labels in the diagram represent:

[0025] 100. Vacuum feeding system; 110. Material cylinder; 120. Vacuum suction assembly; 130. Anti-clogging assembly; 131. Protective frame; 132. Servo motor; 133. Driving bevel gear; 134. Driven bevel gear; 135. Unblocking frame; 136. Annular cavity; 137. Sealing ring; 140. Reinforced unblocking assembly; 141. Rectangular tube; 142. Rectangular rod; 143. Round block; 144. Annular corrugated groove; 145. Guide block; 200. Blow molding system. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0028] In some embodiments, please refer to the accompanying drawings. Figures 1-5A plastic part cutout molding equipment includes a vacuum feeding system 100 and a blow molding system 200. The vacuum feeding system 100 includes a material cylinder 110 fixedly connected to the feeding end of the blow molding system 200. A vacuum suction component 120 is installed on the top of the material cylinder 110, and an anti-clogging component 130 is installed inside the material cylinder 110.

[0029] In some embodiments, such as Figures 2-5 As shown, in a preferred embodiment of the present invention, the anti-clogging component 130 includes a protective frame 131 and a servo motor 132. The protective frame 131 is fixedly connected to the inner wall of the material cylinder 110, and the servo motor 132 is fixedly connected to the surface of the material cylinder 110. The end of the output shaft of the servo motor 132 passes through the material cylinder 110 and extends into the interior of the protective frame 131. The end of the output shaft of the servo motor 132 is fixedly connected to a driving bevel gear 133. The surface of the driving bevel gear 133 is meshed with a driven bevel gear 134 that is rotatably connected to the protective frame 131. The bottom of the driven bevel gear 134 is fixedly connected to a draining frame 135. The draining frame 135 is in the shape of a conical hollow frame, and the corners of the draining frame 135 are rounded. The protective frame 131 is in the shape of a hollow three-dimensional cross, and the corners of the protective frame 131 are rounded. A sealing ring 137 is embedded in the inner side of the protective frame 131, and the sealing ring 137 is sleeved on the surface of the draining frame 135.

[0030] In this embodiment, after the vacuum suction assembly 120 sucks the plastic particles into the inside of the material cylinder 110, the servo motor 132 drives the active bevel gear 133 to rotate, the active bevel gear 133 drives the driven bevel gear 134 to rotate, and the driven bevel gear 134 drives the unblocking frame 135 to rotate and stir the plastic particles inside the material cylinder 110. This can make the plastic particles inside the material cylinder 110 in a near-flowing state, effectively reducing the probability of the plastic particles clogging the material cylinder 110 due to mutual stacking, thereby ensuring that the plastic particles can be discharged normally.

[0031] In some embodiments, such as Figures 3-5As shown, in a preferred embodiment of this utility model, the vacuum feeding system 100 further includes a reinforced unblocking component 140. The reinforced unblocking component 140 includes a rectangular tube 141 fixedly connected to the bottom of the driven bevel gear 134. A rectangular rod 142 is slidably connected to the inner side of the rectangular tube 141. A circular block 143 fixedly connected to the bottom of the rectangular rod 142 and fixedly connected to the unblocking frame 135 is fixedly connected to the bottom of the rod 142. An annular wave groove 144 is formed on the surface of the circular block 143. A guide block 145 fixedly connected to the protective frame 131 is slidably connected to the inner side of the annular wave groove 144. An annular cavity 136 is formed on the inner side of the protective frame 131. The inner diameter of the annular cavity 136 is larger than the inner diameter of the lower opening of the protective frame 131. The circular block 143 is slidably connected to the inside of the annular cavity 136. The cross-sectional shape of the guide block 145 is cylindrical. One end of the guide block 145 located inside the annular wave groove 144 is rounded. The guide block 145 is initially in contact with the inner top wall of the annular wave groove 144.

[0032] In this embodiment, during the rotation of the driven bevel gear 134, the driven bevel gear 134 drives the rectangular tube 141 to rotate, the rectangular tube 141 drives the rectangular rod 142 to rotate, and the rectangular rod 142 drives the circular block 143 to rotate. At this time, the guide block 145 reciprocates and rises and falls through the annular wave groove 144 and the circular block 143 during the rotation. This enables the unblocking frame 135 to rotate in three dimensions, effectively increasing the unblocking range of plastic particles in the material cylinder 110 and further improving the anti-clogging effect on plastic particles.

[0033] In some embodiments, such as Figure 1 As shown, in a preferred embodiment of the present invention, the vacuum suction assembly 120 includes the following structure:

[0034] Sealing cap: Used to seal the top of the barrel 110, providing a mounting location for subsequent structures;

[0035] Vacuum pump / fan: A power source that generates negative pressure and creates a vacuum environment inside the pipeline through suction (core component).

[0036] Suction nozzle: It comes into contact with raw materials (such as plastic granules), adapts to different material forms, and achieves initial suction.

[0037] Conveying pipeline: Wear-resistant and corrosion-resistant pipeline connects the suction nozzle to the blow molding machine hopper for sealed material conveying.

[0038] Filter: Separates materials from air, prevents dust from entering the vacuum pump, and ensures the cleanliness of materials (including backflushing cleaning function).

[0039] Control system: PLC automatically controls the start and stop of the vacuum pump, the opening and closing of valves, and the delivery cycle.

[0040] The blow molding system 200 includes the following structure:

[0041] Basic die head and extrusion system: melts and plasticizes plastic granules and extrudes them into a preform.

[0042] Mold closing mechanism: Hydraulically driven mold opening and closing, fixing the blank tube and forming the product.

[0043] Inflation system: Injects high-pressure gas into the preform tube to make it conform to the inner wall of the mold and solidify.

[0044] Cooling and demolding device: Cools and shapes the product and ejects it automatically.

[0045] Operation process of plastic part hollow forming equipment

[0046] 1. Raw material preparation and melting

[0047] Material handling: Plastic granules (such as PE and PET) are dried and then fed into the hopper of an extruder or injection molding machine.

[0048] Plasticizing extrusion: The screw is heated to a molten state (180-300℃) and a tubular preform is formed through the extruder head (extrusion blow molding) or a preform is injection molded (injection blow molding).

[0049] 2. Parison forming and positioning

[0050] Parison control: Extrusion blow molding requires control of parison wall thickness (by electro-hydraulic adjustment of the die gap), while injection blow molding directly obtains preforms with precise wall thickness.

[0051] Mold positioning: The preform is placed in the split mold, the mold closes to clamp the preform and complete the neck shaping (such as the bottle mouth).

[0052] 3. Inflation and Cooling

[0053] Inflatable molding: Compressed air (0.3-1.0MPa) is injected into the cavity of the preform, causing it to expand and fit against the inner wall of the mold to form a hollow structure.

[0054] Cooling and solidification: The mold is cooled quickly through cooling water channels, and the mold is opened and demolded after it has set.

[0055] 4. Post-processing

[0056] Trimming and removing burrs: Cut off excess material (such as overflow from the bottle neck).

[0057] Quality inspection and packaging: Check the uniformity of wall thickness, sealing performance, etc., and package qualified products into the warehouse.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plastic part cutout molding equipment, comprising a vacuum feeding system (100) and a blow molding system (200), characterized in that: The vacuum feeding system (100) includes a cylinder (110) fixedly connected to the feed end of the blow molding system (200), a vacuum suction assembly (120) is installed on the top of the cylinder (110), and an anti-clogging assembly (130) is installed inside the cylinder (110). The anti-clogging component (130) includes a protective frame (131) and a servo motor (132). The protective frame (131) is fixedly connected to the inner wall of the material cylinder (110), and the servo motor (132) is fixedly connected to the surface of the material cylinder (110). The end of the output shaft of the servo motor (132) passes through the material cylinder (110) and extends into the interior of the protective frame (131). The end of the output shaft of the servo motor (132) is fixedly connected to a drive bevel gear (133). The surface of the drive bevel gear (133) is meshed with a driven bevel gear (134) that is rotatably connected to the protective frame (131). The bottom of the driven bevel gear (134) is fixedly connected to a draining frame (135).

2. The plastic part hollowing molding equipment according to claim 1, characterized in that, The dredging rack (135) is in the shape of a cone-shaped hollow frame, and the corners of the dredging rack (135) are rounded.

3. The plastic part hollowing molding equipment according to claim 1, characterized in that, The protective frame (131) is in the shape of a hollow three-dimensional cross, and the corners of the protective frame (131) are rounded.

4. The plastic part hollowing molding equipment according to claim 1, characterized in that, The vacuum feeding system (100) also includes a reinforced unblocking component (140), which includes a rectangular tube (141) fixedly connected to the bottom of the driven bevel gear (134). A rectangular rod (142) is slidably connected to the inner side of the rectangular tube (141). A circular block (143) fixedly connected to the bottom of the rectangular rod (142) and fixedly connected to the unblocking frame (135) is fixedly connected to the bottom of the rectangular rod (142). An annular wave groove (144) is provided on the surface of the circular block (143). A guide block (145) fixedly connected to the protective frame (131) is slidably connected to the inner side of the annular wave groove (144).

5. The plastic part hollowing molding equipment according to claim 4, characterized in that, The inner side of the protective frame (131) is provided with an annular cavity (136), the inner diameter of the annular cavity (136) is larger than the inner diameter of the lower opening of the protective frame (131), and the circular block (143) is slidably connected to the inside of the annular cavity (136).

6. The plastic part hollowing molding equipment according to claim 5, characterized in that, The guide block (145) has a cylindrical cross-section, and one end of the guide block (145) located inside the annular wave groove (144) has rounded corners.

7. The plastic part hollowing molding equipment according to claim 6, characterized in that, The guide block (145) is initially in contact with the inner top wall of the annular wave groove (144).

8. The plastic part hollow forming equipment according to claim 1, characterized in that, A sealing ring (137) is embedded in the inner side of the protective frame (131), and the sealing ring (137) is fitted onto the surface of the drain cleaning frame (135).

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