Dust removal mechanism of bottle blowing machine

Abstract

The invention discloses a dust removal mechanism of a bottle blowing machine, and relates to the technical field of injection molding bottle blowing. The device comprises a cam and a bearing seat which are mounted on a bedplate, wherein a rotary star wheel tray is mounted at the top of the bearing seat; the rotating star wheel tray is provided with a plurality of groups of destaticizing nozzle assemblies, each destaticizing nozzle assembly comprises a guide sleeve seat, a movable shaft movably penetrates through the guide sleeve seat, and two ends of the movable shaft are respectively connected with a fixed seat and a base; a spring sleeved on the movable shaft is connected between the base and the guide sleeve seat; a roller rolling along the end surface of the cam is mounted on one side of the base; and a plurality of columnar electrostatic nozzles are mounted on the fixed seat. The lifting of the electrostatic nozzle is controlled through the cam mechanism, so that the nozzle can go deep into a bottle blank for blowing; the electrostatic generator enables the airflow to carry charges, so that the adsorption stripping effect on particles attached to the surfaces of the bottle blanks is enhanced, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection blow molding, and particularly relates to a dust removal mechanism for a blow molding machine. Background Art

[0002] Currently, the batch processing of plastic bottles usually uses the "two-step method" for production, that is, heating the plastic bottle preforms to a certain temperature and then transferring them to a mold for pressure blowing. During the production and transportation of plastic bottle preforms produced by an injection molding machine, it is inevitable that debris will fall off and dust will adhere. Bottle preforms with dust and plastic particles often have defects when blown into bottles, which are not beautiful and are more likely to carry bacteria. Currently, the industry has higher and higher requirements for the forming quality of plastic bottles, which makes it necessary to perform dust removal treatment on the bottle preforms before heating and blowing to remove debris and dust, so as to improve the quality of the formed bottles and meet the requirements of the market and customers. Summary of the Invention

[0003] The purpose of the present invention is to provide a dust removal mechanism for a blow molding machine, which controls the lifting of an electrostatic nozzle through a cam mechanism, enabling the nozzle to penetrate into the interior of the bottle preform for blowing, and solving the problem of poor dust removal effect of a fixed nozzle for deep cavity bottle preforms.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] The present invention is a dust removal mechanism for a blow molding machine, including a cam base installed on a platen, a cam being provided on the cam base; a bearing seat passing through the cam base is also installed on the platen, a rotating shaft is installed at the top of the bearing seat through a bearing, and a rotating star wheel tray is installed on the rotating shaft; a plurality of electrostatic nozzle assemblies are installed on the rotating star wheel tray, each electrostatic nozzle assembly includes a guide sleeve seat, a movable shaft movably penetrates through the guide sleeve seat, and fixed seats and bases are respectively connected to both ends of the movable shaft; a spring sleeved on the movable shaft is also connected between the base and the guide sleeve seat, a roller rolling along the end face of the cam is installed on one side of the base; a plurality of columnar electrostatic nozzles are installed on the fixed seat; the end face of the cam has a first plane and a second plane with a height difference, and the first plane and the second plane form an inclined transition surface.

[0006] Further, a guide shaft that is movably matched with the guide sleeve seat is also fixed to the bottom side surface of the fixed seat.

[0007] Further, a support plate is connected to the upper surface of the rotating star wheel tray through a support member, an electromagnetic valve, an electrostatic generator, and a splitter are installed on the support plate; an opening is provided in the middle of the support plate, and a slip ring and an air slip ring are installed at the opening; the splitter is connected to the air slip ring through a hose A, and the air slip ring is connected to the electrostatic nozzle through a hose B.

[0008] Further, a solenoid valve is provided on the hose A / hose B; the electrostatic generator is connected to a splitter through wire A, the splitter is connected to an electrostatic nozzle through wire B, the electrostatic generator is connected to a slip ring through wire C, and the slip ring is connected to a power supply through wire D.

[0009] Further, a wind shield ring is also provided on the circumferential side of the upper surface of the rotating star wheel tray, and the same number of holes as the electrostatic nozzles are arranged on the outer side of the wind shield ring.

[0010] Further, a plurality of pillars are arranged in a circle on the upper surface of the platen, a semi-circular air extraction cavity assembly is fixed at the top of the pillar, an air duct is connected and installed above the air extraction cavity assembly, and the end of the air duct is connected to a negative pressure device.

[0011] The present invention has the following beneficial effects:

[0012] 1. The present invention controls the lifting of the electrostatic nozzle through a cam mechanism, enabling the nozzle to penetrate into the inside of the preform for purging; the semi-circular air extraction cavity assembly cooperates with the position of the rotating star wheel tray to only direct the suction of the preform at the current dust removal station, avoiding the dust diffusion caused by the overall negative pressure and the secondary pollution of the already cleaned preforms; and the electrostatic generator makes the air flow carry charges, enhancing the adsorption and stripping effect on the particles attached to the surface of the preform and improving the dust removal efficiency.

[0013] 2. The roller of the present invention rolls along the end face of the cam and is reset by a spring to ensure the smooth and reliable lifting action of the nozzle, adapting to the high-speed continuous production rhythm; the cooperation of the guide shaft and the guide sleeve seat further restricts the movement trajectory of the movable shaft, preventing the nozzle from deflecting and improving the positioning accuracy of inserting into the preform.

[0014] 3. The present invention solves the problem of the continuity of the electrical and gas signal transmission on the rotating star wheel tray through the integrated design of the slip ring and the air slip ring, ensuring the stability of the electrostatic generation and the air flow supply; the support plate centrally installs components such as solenoid valves and splitters, facilitating maintenance and repair; the wind shield ring reduces the external air flow interference and maintains the negative pressure adsorption efficiency.

[0015] 4. Compared with the overall suction scheme, the semi-circular air extraction cavity of the present invention only covers the dust removal station, reducing the power requirement of the negative pressure device and saving energy consumption; at the same time, each group of nozzle assemblies can be independently controlled, adapting to the flexible adjustment of different preform sizes and pollution degrees; and the holes on the outer side of the wind shield ring correspond one-to-one with the nozzle positions, avoiding the risk of air flow interference or mechanical collision during rotation.

[0016] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the layout structure of the dust removal mechanism of the present invention;

[0019] Figure 2 is Figure 1 sectional view of;

[0020] Figure 3 Schematic diagram of the structure of the electrostatic removal nozzle assembly of the present invention. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0023] Please refer to Figures 1 - 3 As shown, the present invention is a dust removal mechanism for a blow molding machine, including a cam base 2 installed on a platen 1, and a cam 3 is provided on the cam base 2; a bearing seat 5 passing through the cam base 2 is also installed on the platen 1, a rotating shaft 6 is installed at the top of the bearing seat 5 through a bearing, and a rotating star wheel tray 7 is installed on the rotating shaft 6; a plurality of electrostatic removal nozzle assemblies are installed on the rotating star wheel tray 7, and the electrostatic removal nozzle assembly includes a guide sleeve seat 14, an activity shaft 12 movably penetrates through the guide sleeve seat 14, and both ends of the activity shaft 12 are respectively connected with a fixed seat 18 and a base 17; a spring 15 sleeved on the activity shaft 12 is also connected between the base 17 and the guide sleeve seat 14, and a roller 16 rolling along the end face of the cam 3 is installed on one side of the base 17; a plurality of columnar electrostatic nozzles 20 are installed on the fixed seat 18; there are a first plane 301 and a second plane 303 with a height difference on the end face of the cam 3, and the first plane 301 and the second plane 303 form an inclined transition surface 302.

[0024] Further, a guide shaft 13 that is movably engaged with the guide sleeve seat 14 is also fixed to the bottom side surface of the fixed seat 18.

[0025] Further, a support plate 24 is connected to the upper surface of the rotating star wheel tray 7 through a support member 8. An electromagnetic valve, an electrostatic generator, and a splitter are installed on the support plate 24; an opening is provided in the middle of the support plate 24, and a slip ring 10 and an air slip ring 11 are installed at the opening; the splitter is connected to the air slip ring 11 through a hose A, and the air slip ring 11 is connected to the electrostatic nozzle 20 through a hose B.

[0026] Further, an electromagnetic valve is provided on the hose A / hose B; the electrostatic generator is connected to the splitter through a wire A, the splitter is connected to the electrostatic nozzle through a wire B, the electrostatic generator is connected to the slip ring 10 through a wire C, and the slip ring 10 is connected to the power supply through a wire D.

[0027] Further, a wind shield ring 9 is also provided on the circumferential side of the upper surface of the rotating star wheel tray 7, and a plurality of holes 901 having the same number as the electrostatic nozzles 20 are arranged on the outer side of the wind shield ring 9.

[0028] Further, a plurality of support columns 4 are arranged in a circumferential manner on the upper surface of the platen 1, and a semi-circular air extraction cavity assembly 22 is fixed to the top of the support columns 4. An air duct 23 is connected and installed above the air extraction cavity assembly 22, and the end of the air duct 23 is connected to a negative pressure device.

[0029] During use, the rotating shaft 6 rotates counterclockwise in the bearing seat 5, and at the same time drives the wind shield ring 9 and the rotating star wheel tray 7 to rotate counterclockwise; at this time, the preform 21 is transferred from the previous transition star wheel tray to the rotating star wheel tray 7. At this time, the roller 16 corresponding to the preform 21 is on the higher first plane 301 of the cam 3, and the electrostatic nozzle 20 is in the initial position. As the rotating star wheel tray 7 rotates, the roller 16 reaches the lower second plane 303 of the cam 3 after passing through the transition surface 302. Under the action of the spring 15, the movable shaft 12 is pressed down, driving the electrostatic nozzle 20 to move downward and insert into the preform 21; at the same time, the electromagnetic valve is triggered, the electrostatic generator generates static electricity, and combines with the gas to generate charged gas. The charged gas is blown into the preform corresponding to the air nozzle, making it easy for dust to separate from the preform; and the negative pressure device is always started during the operation of the equipment. The generated negative pressure acts on the air extraction cavity assembly 23 through the air duct 23. At this time, the air extraction cavity assembly 23 acts on this section of the area where the preform 21 rotates and runs on the star wheel tray. And due to the presence of the rotating star wheel tray 7 and the wind shield ring 9, the negative pressure will not decay much. The rotating star wheel tray 7 continues to rotate and drive the preform 21 to move. The roller 16 reaches the first plane 301 after passing through the transition surface 302, driving the electrostatic nozzle 20 to move upward and slide out of the preform 21. The preform 21 moves from this rotating star wheel tray 7 to the next star wheel tray, and subsequent heating and blowing operations are performed on this star wheel tray.

[0030] The negative pressure dust collection structure is arranged on the outside and is independent of the rotating part, which is convenient for installation. The suction position is fixed, there are few leakage positions, the negative pressure stability is high, and the dust removal effect is good.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A dust removal mechanism for a bottle blowing machine, characterized in that: It includes a cam base installed on a platen, and a cam is provided on the cam base; A bearing seat passing through the cam base is also installed on the platen. A rotating shaft is installed at the top of the bearing seat through a bearing, and a rotating star wheel tray is installed on the rotating shaft; Multiple sets of electrostatic discharge nozzle assemblies are installed on the rotating star wheel tray. The electrostatic discharge nozzle assembly includes a guide sleeve seat, and a movable shaft movably penetrates through the guide sleeve seat. Fixed seats and bases are respectively connected to both ends of the movable shaft; A spring sleeved on the movable shaft is also connected between the base and the guide sleeve seat, and a roller rolling along the end face of the cam is installed on one side of the base; Multiple columnar electrostatic nozzles are installed on the fixed seat; The end face of the cam has a first plane and a second plane with a height difference, and the first plane and the second plane form an inclined transition surface.

2. The dust removal mechanism of a bottle blowing machine according to claim 1, characterized in that, A guide shaft that is movably matched with the guide sleeve seat is also fixed on the bottom side of the fixed seat.

3. The dust removal mechanism of a bottle blowing machine according to claim 1, characterized in that, A support plate is connected to the upper surface of the rotating star wheel tray through a support member, and a solenoid valve, an electrostatic generator, and a splitter are installed on the support plate; An opening is provided in the middle of the support plate, and a slip ring and an air slip ring are installed at the opening; The splitter is connected to the air slip ring through a hose A, and the air slip ring is connected to the electrostatic nozzle through a hose B.

4. The dust removal mechanism of a bottle blowing machine according to claim 1, characterized in that, Solenoid valves are provided on the hose A / hose B; The electrostatic generator is connected to the splitter through a wire A, the splitter is connected to the electrostatic nozzle through a wire B, the electrostatic generator is connected to the slip ring through a wire C, and the slip ring is connected to a power source through a wire D.

5. The dust removal mechanism of a bottle blowing machine according to claim 1, characterized in that, A wind shield ring is also provided on the circumferential side of the upper surface of the rotating star wheel tray, and holes with the same number as the electrostatic nozzles are arranged outside the wind shield ring.

6. The dust removal mechanism of a bottle blowing machine according to claim 1, characterized in that, Multiple columns are arranged circumferentially on the upper surface of the platen. A semi-circular air extraction cavity assembly is fixed at the top of the columns. An air duct is connected and installed above the air extraction cavity assembly, and the end of the air duct is connected to a negative pressure device.

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