CN109732876B - Blow molding equipment for producing high-precision plastic barrel - Google Patents
Blow molding equipment for producing high-precision plastic barrel Download PDFInfo
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- CN109732876B CN109732876B CN201910080190.5A CN201910080190A CN109732876B CN 109732876 B CN109732876 B CN 109732876B CN 201910080190 A CN201910080190 A CN 201910080190A CN 109732876 B CN109732876 B CN 109732876B
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Abstract
The invention relates to a blow molding device for producing a high-precision plastic barrel, which comprises a base, a top plate, a controller, an air blow pipe, a pressurizing chamber, a compressor, two dies and four cylinders, wherein an electric heating wire and a pressurizing mechanism are arranged in the pressurizing chamber, the pressurizing mechanism comprises a pressurizing plate, a pressurizing assembly and two ventilating assemblies, each ventilating assembly comprises a through hole, a sealing block and a lifting unit, and after a parison is blown to be close to the inner wall of the die by the air blow pipe, part of air in the pressurizing chamber is extruded into the parison by the pressurizing mechanism, so that the air quantity in the parison is increased, the shrinkage generated after the parison is cooled is reduced, and the production precision of the plastic barrel and the practicability of the device are improved.
Description
Technical Field
The invention relates to the field of plastic barrel production equipment, in particular to blow molding equipment for producing a high-precision plastic barrel.
Background
Blow molding, also known as blow molding, is a rapidly developing plastic processing method. The tubular parison obtained by extruding or injection molding the thermoplastic resin is placed in a split mold in a heat softening state, compressed air is introduced into the parison immediately after the mold is closed, so that the plastic parison is blown to cling to the inner wall of the mold, and various hollow products are obtained after cooling and demolding. Plastic pails are commonly produced using blow molding equipment.
When current blowing device is carrying out plastic drum production, in order to guarantee the softened state of plastic parison, make things convenient for the extrusion that plastic parison received the air to hug closely on the mould is inside, generally can inject high temperature air into the parison, but in the cooling shaping in-process, because expend with heat and contract with cold's reason, bodily form shrink when the high temperature air of plastic parison cools down leads to fashioned plastic drum bodily form to reduce, has reduced the precision of plastic drum production to lead to current plastic drum blowing equipment practicality to reduce.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, a blow molding device for producing high-precision plastic barrels is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a blow molding device for producing a high-precision plastic barrel comprises a base, a top plate, a controller, an air blowing pipe, a pressurizing chamber, a compressor, two molds and four cylinders, wherein the four cylinders are respectively positioned below four corners of the top plate, a cylinder body of each cylinder is fixed above the base, the top end of an air rod of each cylinder is fixedly connected with the top plate, the pressurizing chamber is fixed above the top plate, the compressor, the pressurizing chamber and the air blowing pipe are sequentially communicated from top to bottom, an electric heating wire and a pressurizing mechanism are arranged in the pressurizing chamber, the electric heating wire is positioned above the pressurizing mechanism, rollers are arranged at the four corners below the molds, and the electric heating wire, the rollers, the cylinders and the compressor are all electrically connected with a PLC;
the pressurizing mechanism comprises a pressurizing plate, a pressurizing assembly and two ventilation assemblies, the pressurizing assembly is located above the pressurizing plate, the two ventilation assemblies are located on two sides of the pressurizing plate respectively, the pressurizing assembly is in transmission connection with the pressurizing plate, the periphery of the pressurizing plate is in sealing connection with the inner wall of the pressurizing chamber, the ventilation assemblies comprise through holes, sealing blocks and lifting units, the through holes are formed in the pressurizing plate, the sealing blocks are conical, the sealing blocks are located above the through holes, the diameter of each sealing block is larger than the inner diameter of each through hole, and the lifting units are in transmission connection with the bottoms of the sealing blocks.
Preferably, in order to realize the stable movement of the mold, a sliding block is arranged below the mold, a sliding rail is arranged above the base, the sliding rail is U-shaped, two ends of the sliding rail are fixed above the base, and the sliding block is sleeved on the sliding rail.
Preferably, in order to control the movement of the pressurizing plate, the pressurizing assembly comprises a first motor, a driving wheel, a driving rod, a driving frame and two connecting plates, the first motor is fixed in the pressurizing chamber and electrically connected with the PLC, the first motor is in transmission connection with the driving wheel, the driving rod is fixed at the position, far away from the circle center, of the driving wheel, the driving rod is located on the inner side of the driving frame, and the driving frame is in transmission connection with the pressurizing plate through the connecting plates.
Preferably, in order to control the sealing block to move up and down, the lifting unit comprises a second motor, a screw rod, a sleeve and two supports, the two supports are respectively located on two sides of the second motor, the second motor is electrically connected with the PLC, the second motor is in transmission connection with the top end of the screw rod, the bottom end of the screw rod is arranged in the sleeve, a connection part of the sleeve and the screw rod is provided with a thread matched with the screw rod, and the sleeve is fixedly connected with the sealing block.
Preferably, in order to realize the stable movement of the sealing block, sliding rings are arranged on two sides of the sleeve and fixedly connected with the sleeve, the sliding rings correspond to the supports one to one, and the sliding rings are sleeved on the supports.
Preferably, in order to detect whether a parison in a cavity formed by two molds abuts against the inner wall of the mold, the mold is provided with a detection unit, the detection unit comprises a notch, a moving plate, a detection plate, a spring, a distance sensor and two slide bars, the notch is arranged on the inner wall of the mold, the moving plate is positioned on the inner side of the mold, the moving plate is matched with the notch, the detection plate is positioned on the outer side of the mold, the detection plate is connected with the mold through the spring, the distance sensor is fixed on the mold, the distance sensor is electrically connected with the PLC, and two ends of the detection plate are respectively fixedly connected with the moving plate through the two slide bars.
The blow molding equipment for producing the high-precision plastic barrel has the advantages that after the parison is blown to be close to the inner wall of the mold by the blowing pipe, partial air in the pressurizing chamber is extruded into the parison by the pressurizing mechanism, so that the air quantity in the parison is increased, the shrinkage generated after the parison is cooled is reduced, and the production precision of the plastic barrel and the practicability of the equipment are improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a blow molding apparatus for producing high precision plastic pails of the present invention;
FIG. 2 is a schematic structural view of a pressing mechanism of the blow molding apparatus for producing a high-precision plastic tub of the present invention;
in the figure: 1. the automatic feeding device comprises a base, a top plate, a controller, a blowing pipe, a pressurizing chamber, a compressor, a mold, a die, a cylinder, a heating wire, a roller, a pressurizing plate, a sealing block, a sliding rail, a first motor, a driving wheel, a driving rod, a driving frame, a connecting plate, a second motor, a driving wheel, a driving rod, a driving frame, a connecting plate, a sliding rod, a screw rod, a sleeve, a supporting frame, a sliding ring, a sliding rod, a sliding plate, a movable plate, a detection plate, a spring and a distance sensor, wherein.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-2, a blow molding apparatus for producing a high precision plastic barrel comprises a base 1, a top plate 2, a controller 3, an air blowing pipe 4, a pressurizing chamber 5, a compressor 6, two molds 7 and four cylinders 8, wherein the four cylinders 8 are respectively located below four corners of the top plate 2, a cylinder body of each cylinder 8 is fixed above the base 1, a top end of an air rod of each cylinder 8 is fixedly connected with the top plate 2, the pressurizing chamber 5 is fixed above the top plate 2, the compressor 6, the pressurizing chamber 5 and the air blowing pipe 4 are sequentially communicated from top to bottom, an electric heating wire 9 and a pressurizing mechanism are arranged in the pressurizing chamber 5, the electric heating wire 9 is located above the pressurizing mechanism, rollers 10 are arranged at four corners below the mold 7, and the electric heating wire 9, the rollers 10, the cylinders 8 and the compressor 6 are electrically connected with a PLC;
the pressurizing mechanism comprises a pressurizing plate 11, a pressurizing assembly and two ventilating assemblies, the pressurizing assembly is located above the pressurizing plate 11, the two ventilating assemblies are located on two sides of the pressurizing plate 11 respectively, the pressurizing assembly is in transmission connection with the pressurizing plate 11, the periphery of the pressurizing plate 11 is in sealing connection with the inner wall of the pressurizing chamber 5, each ventilating assembly comprises a through hole, a sealing block 12 and a lifting unit, the through holes are formed in the pressurizing plate 11, the sealing blocks 12 are conical, the sealing blocks 12 are located above the through holes, the diameter of the sealing blocks 12 is larger than the inner diameter of the through holes, and the lifting unit is in transmission connection with the bottom of the sealing blocks 12.
When the blow molding equipment is used for producing plastic barrels, a producer operates the equipment to run through the controller 3, the roller 10 below the mold 7 drives the mold 7 to move, the two molds 7 move separately, after softened plastic parisons are placed between the two molds 7, the roller 10 drives the molds 7 to move close to each other to form a cavity, the parisons are located in the cavity, the roller 10 drives the mold 7 to move above the base 1, the parisons are located below the blowing pipes 4, then the cylinders 8 are started, the air pressure in the cylinders of the cylinders 8 is reduced, the cylinders 8 of the cylinders 8 drive the top plate 2 to move downwards, the blowing pipes 4 extend into the parisons, then the PLC controls the compressor 6 to be started, external air is introduced to be compressed, the air is blown into the parisons through the pressurization chambers 5 and the blowing pipes 4, and the parisons are extruded by the compressed air to expand, the parison is then brought into abutment against the inner wall of the mould 7 and the drum is then formed by cooling the parison. After the compressed air enters the compression chamber 5, the electric heating wire 9 is electrified, so that the temperature of the electric heating wire 9 rises, the heat is transferred to the compressed air, the temperature of the air is raised, the air after temperature rise enters the blowing pipe 4 through the through hole of the pressurizing plate 11 and then enters the parison from the blowing pipe 4 to blow the parison, so that the parison expands, and when the parison is pressed against the inner wall of the mould 7, the compressor 6 stops, meanwhile, the PLC controls the lifting unit to start to drive the sealing plate to move downwards, so that after the sealing block 12 blocks the through hole, the pressurizing mechanism is started to drive the pressurizing plate 11 to move downwards, residual compressed air below the pressurizing plate 11 in the pressurizing chamber 5 is extruded into the parison through the air blowing pipe 4 to increase the air quantity in the parison, when the parison is cooled and formed, the shrinkage change generated after the parison is cooled is reduced, and the blow molding production quality of the plastic barrel is improved.
Preferably, in order to realize the stable movement of the mold 7, a sliding block 13 is arranged below the mold 7, a sliding rail 14 is arranged above the base 1, the sliding rail 14 is U-shaped, two ends of the sliding rail 14 are fixed above the base 1, and the sliding block 13 is sleeved on the sliding rail 14. The moving direction of the slide block 13 is fixed by the slide rail 14 at a fixed position, and since the slide block 13 is fixed below the mold 7, when the roller 10 rolls on the base 1, the mold 7 can be smoothly moved.
As shown in fig. 2, the pressurizing assembly includes a first motor 15, a driving wheel 16, a driving rod 17, a driving frame 18 and two connecting plates 19, the first motor 15 is fixed in the pressurizing chamber 5, the first motor 15 is electrically connected to the PLC, the first motor 15 is in transmission connection with the driving wheel 16, the driving rod 17 is fixed at a position far from the center of the driving wheel 16, the driving rod 17 is located on the inner side of the driving frame 18, and the driving frame 18 is in transmission connection with the pressurizing plate 11 through the connecting plates 19.
The PLC controls the first motor 15 to start, so as to rotate the driving wheel 16, so that the driving rod 17 on the driving wheel 16 rotates along the axis of the driving wheel 16, thereby acting on the inner wall of the driving frame 18, and driving the pressurizing plate 11 to move through the connecting plate 19.
As shown in fig. 2, the lifting unit includes a second motor 20, a screw rod 21, a sleeve 22 and two brackets 23, the two brackets 23 are respectively located at two sides of the second motor 20, the second motor 20 is electrically connected with the PLC, the second motor 20 is in transmission connection with the top end of the screw rod 21, the bottom end of the screw rod 21 is arranged in the sleeve 22, a connection portion of the sleeve 22 and the screw rod 21 is provided with a thread matched with the screw rod 21, and the sleeve 22 is fixedly connected with the sealing block 12.
Utilize support 23 fixed the position of second motor 20, PLC control second motor 20 starts, drives lead screw 21 rotatory, and lead screw 21 passes through the screw thread and acts on sleeve 22 for sleeve 22 drives sealing block 12 and carries out the lift along the axis of lead screw 21 and moves, when sealing block 12 moves down, can block up the through-hole, and when the pressure plate 11 of being convenient for moved down, the air volume in the increase parison reduces the shrinkage of parison after meeting the cold.
Preferably, in order to realize the smooth movement of the sealing block 12, sliding rings 24 are arranged on two sides of the sleeve 22, the sliding rings 24 are fixedly connected with the sleeve 22, the sliding rings 24 correspond to the brackets 23 one by one, and the sliding rings 24 are sleeved on the brackets 23. The slip ring 24 is sleeved on the support 23, so that the moving direction of the slip ring 24 is fixed, and the slip ring 24 is fixedly connected with the sleeve 22, so that the sleeve 22 is prevented from rotating when the screw rod 21 rotates, and the sleeve 22 drives the sealing block 12 to stably move along the axis direction of the screw rod 21.
As shown in fig. 1, a detection unit is arranged on the mold 7, the detection unit includes a notch, a moving plate 26, a detection plate 27, a spring 28, a distance sensor 29 and two slide bars 25, the notch is arranged on the inner wall of the mold 7, the moving plate 26 is arranged on the inner side of the mold 7, the moving plate 26 is matched with the notch, the detection plate 27 is arranged on the outer side of the mold 7, the detection plate 27 is connected with the mold 7 through the spring 28, the distance sensor 29 is fixed on the mold 7, the distance sensor 29 is electrically connected with the PLC, and two ends of the detection plate 27 are respectively fixedly connected with the moving plate 26 through the two slide bars 25. In the detection unit, a certain distance is kept between the detection plate 27 and the outer surface of the mold 7 through a spring 28, after the blowing pipe 4 blows air into the parison, the parison expands to act on the moving plate 26, the moving plate 26 moves towards the inside of the notch, the sliding rod 25 drives the detection plate 27 to be far away from the mold 7, the distance between the detection plate 27 and the parison is detected through the distance sensor 29 at the moment, the distance data is fed back to the PLC, when the moving plate 26 enters the inside of the notch, the plastic parison just abuts against the inner wall of the mold 7, and the distance sensor 29 received by the PLC reaches the maximum value at the moment, so that the state of the parison at the.
This blow molding equipment is when producing the plastic drum, utilize gas blow pipe 4 to blow to the parison is inside, after parison expansion is close to on the inner wall of mould 7, PLC control compressor 6 out of service, the lift unit drives sealed piece 12 downstream simultaneously, make sealed piece 12 stretch into in the through-hole, plug up the through-hole, then pressurizing assembly starts, drive the pressurized plate 11 downstream, with in the pressurized chamber 5 air extrusion entering parison of pressurized plate 11 below, thereby the inside air quantity of parison has been increased, the shrinkage that produces after the parison receives the cold has been reduced, thereby the production precision of plastic drum and the practicality of this equipment have been improved.
Compared with the prior art, the blow molding equipment for producing the high-precision plastic barrel utilizes the blowing pipe 4 to blow the parison to be close to the inner wall of the mold 7, and extrudes part of air in the pressurization chamber 5 into the parison through the pressurization mechanism, so that the air quantity in the parison is increased, the shrinkage generated after the parison is cooled is reduced, and the production precision of the plastic barrel and the practicability of the equipment are improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The blow molding equipment for producing the high-precision plastic barrel is characterized by comprising a base (1), a top plate (2), a controller (3), an air blowing pipe (4), a pressurizing chamber (5), a compressor (6), two molds (7) and four cylinders (8), wherein the four cylinders (8) are respectively positioned below four corners of the top plate (2), a cylinder body of each cylinder (8) is fixed above the base (1), the top end of an air rod of each cylinder (8) is fixedly connected with the top plate (2), the pressurizing chamber (5) is fixed above the top plate (2), the compressor (6), the pressurizing chamber (5) and the air blowing pipe (4) are sequentially communicated from top to bottom, an electric heating wire (9) and a pressurizing mechanism are arranged in the pressurizing chamber (5), the electric heating wire (9) is positioned above the pressurizing mechanism, and rollers (10) are arranged at the four corners below the molds (7), the electric heating wire (9), the roller (10), the cylinder (8) and the compressor (6) are all electrically connected with the PLC; the pressurization mechanism comprises a pressurization plate (11), a pressurization assembly and two ventilation assemblies, wherein the pressurization assembly is located above the pressurization plate (11), the two ventilation assemblies are located on two sides of the pressurization plate (11) respectively, the pressurization assembly is in transmission connection with the pressurization plate (11), the periphery of the pressurization plate (11) is in sealing connection with the inner wall of the pressurization chamber (5), each ventilation assembly comprises a through hole, a sealing block (12) and a lifting unit, the through hole is formed in the pressurization plate (11), the sealing block (12) is conical, the sealing block (12) is located above the through hole, the diameter of the sealing block (12) is larger than the inner diameter of the through hole, and the lifting unit is in transmission connection with the bottom of the sealing block (12). The pressurizing assembly comprises a first motor (15), a driving wheel (16), a driving rod (17), a driving frame (18) and two connecting plates (19), the first motor (15) is fixed in the pressurizing chamber (5), the first motor (15) is electrically connected with the PLC, the first motor (15) is in transmission connection with the driving wheel (16), the driving rod (17) is fixed at the position, far away from the circle center, of the driving wheel (16), the driving rod (17) is located on the inner side of the driving frame (18), and the driving frame (18) is in transmission connection with the pressurizing plate (11) through the connecting plates (19); the lifting unit comprises a second motor (20), a screw rod (21), a sleeve (22) and two supports (23), the two supports (23) are respectively located on two sides of the second motor (20), the second motor (20) is electrically connected with the PLC, the second motor (20) is connected with the top end of the screw rod (21) in a transmission mode, the bottom end of the screw rod (21) is arranged in the sleeve (22), a connecting portion of the sleeve (22) and the screw rod (21) is provided with threads matched with the screw rod (21), and the sleeve (22) is fixedly connected with a sealing block (12).
2. The blow molding equipment for producing the high-precision plastic barrel according to claim 1, wherein a sliding block (13) is arranged below the mold (7), a sliding rail (14) is arranged above the base (1), the sliding rail (14) is U-shaped, two ends of the sliding rail (14) are fixed above the base (1), and the sliding block (13) is sleeved on the sliding rail (14).
3. The blow molding equipment for producing the high-precision plastic barrels according to claim 1, wherein the two sides of the sleeve (22) are provided with slide rings (24), the slide rings (24) are fixedly connected with the sleeve (22), the slide rings (24) correspond to the brackets (23) one by one, and the slide rings (24) are sleeved on the brackets (23).
4. Blow molding apparatus for producing high precision plastic pails as claimed in claim 1, the mould (7) is provided with a detection unit which comprises a notch, a moving plate (26), a detection plate (27), a spring (28), a distance sensor (29) and two sliding rods (25), the notch is arranged on the inner wall of the mould (7), the moving plate (26) is positioned on the inner side of the mould (7), the moving plate (26) is matched with the notch, the detection plate (27) is positioned at the outer side of the mould (7), the detection plate (27) is connected with the mould (7) through a spring (28), the distance sensor (29) is fixed on the die (7), the distance sensor (29) is electrically connected with the PLC, two ends of the detection plate (27) are respectively and fixedly connected with the moving plate (26) through two sliding rods (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910080190.5A CN109732876B (en) | 2019-01-28 | 2019-01-28 | Blow molding equipment for producing high-precision plastic barrel |
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| CN201910080190.5A CN109732876B (en) | 2019-01-28 | 2019-01-28 | Blow molding equipment for producing high-precision plastic barrel |
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| CN109732876B true CN109732876B (en) | 2021-02-09 |
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| CN111186122B (en) * | 2020-03-03 | 2021-12-31 | 浙江天沐塑业有限公司 | Blow molding mold for plastic production |
| CN112318853A (en) * | 2020-12-10 | 2021-02-05 | 青岛岩康塑料机械有限公司 | Blow molding device for manufacturing plastic barrel |
| CN114311612A (en) * | 2022-03-10 | 2022-04-12 | 南通迈克包装科技有限公司 | Blow molding equipment for producing high-precision plastic barrel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3144843B2 (en) * | 1991-08-14 | 2001-03-12 | 昭和電工株式会社 | Blow molding method |
| DE29507103U1 (en) * | 1995-04-27 | 1995-08-17 | Mauser-Werke GmbH, 50321 Brühl | After cooling device |
| CN107283805A (en) * | 2017-07-22 | 2017-10-24 | 山东福润橡塑科技有限公司 | A kind of fixed-type cooling device of Bulk plastic bucket |
| CN108515685B (en) * | 2018-03-30 | 2021-01-15 | 江苏圣宇高新材料有限责任公司 | Blow mold with heating device |
| CN108748779A (en) * | 2018-05-07 | 2018-11-06 | 晋江万智进出口贸易有限公司 | A kind of injection moulding apparatus for producing plastic products |
| CN109228072B (en) * | 2018-07-10 | 2020-12-04 | 临沂文衡信息技术有限公司 | Plastic bucket forming device |
| CN108748957B (en) * | 2018-08-07 | 2023-10-20 | 苏州同大机械有限公司 | Cooling device for blow molding plastic barrel of blow molding machine |
| CN108995186A (en) * | 2018-08-21 | 2018-12-14 | 潍坊市华玉塑料机械有限公司 | L ring plastic barrel blow moulding machine blowning installation |
| CN109203424A (en) * | 2018-10-10 | 2019-01-15 | 昆明博效包装材料有限公司 | A kind of plastic extrusion blowing blow moulding machine of segmented movable block pc barrel die |
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Inventor after: Zhou Yanhong Inventor after: Meng Zexi Inventor before: Meng Zexi |
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Effective date of registration: 20221201 Address after: 211600 No. 1, ninggao Road, Jinhu County, Huai'an City, Jiangsu Province Patentee after: Jiangsu Shangyuan Container Manufacturing Co.,Ltd. Address before: 510000 room 2101, building 2, 48 Longxi East Road, Liwan District, Guangzhou City, Guangdong Province, No. 0140 (office use only) Patentee before: GUANGZHOU BAISHICHEN TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A blow molding equipment for producing high-precision plastic barrels Effective date of registration: 20230828 Granted publication date: 20210209 Pledgee: Jiangsu Jinhu Rural Commercial Bank Co.,Ltd. Pledgor: Jiangsu Shangyuan Container Manufacturing Co.,Ltd. Registration number: Y2023980054054 |