阅读说明：本技术 塑料瓶批量连续自动化生产线 (Continuous automatic production line for plastic bottles in batches ) 是由 谭森峰 于 2020-04-10 设计创作，主要内容包括：本发明公开了一种塑料瓶批量连续自动化生产线,其包括塑料板连续加热设备、吹塑设备、切口设备和收料设备；所述吹塑设备包括链式模具输送装置和吹塑组件,所述链式模具输送装置包括并列设置的多个模具和第二驱动装置,任意相邻的两块模具之间相互铰接使得多个模具形成可传动的由模具构成的模具传送链,所述第二驱动装置驱动所述模具传送链传动。本发明的塑料瓶批量连续自动化生产线缩短了塑料瓶生产步骤,实现了塑料瓶不间断吹塑连续化生产,显著地提高了塑料瓶生产效率。(The invention discloses a plastic bottle batch continuous automatic production line, which comprises plastic plate continuous heating equipment, blow molding equipment, notching equipment and material receiving equipment, wherein the plastic plate continuous heating equipment is connected with the plastic plate continuous heating equipment; the blow molding equipment comprises a chain type mold conveying device and a blow molding assembly, wherein the chain type mold conveying device comprises a plurality of molds and a second driving device which are arranged in parallel, any two adjacent molds are hinged with each other, so that the plurality of molds form a mold conveying chain which can be driven and is formed by the molds, and the second driving device drives the mold conveying chain to drive. The plastic bottle batch continuous automatic production line shortens the production steps of plastic bottles, realizes the continuous production of plastic bottles by continuous blow molding, and obviously improves the production efficiency of the plastic bottles.)

1. The utility model provides a plastic bottle continuous automation line in batches which characterized in that: comprises plastic plate continuous heating equipment, blow molding equipment, notching equipment and material receiving equipment; the blow molding equipment comprises a chain type mold conveying device and a blow molding assembly, wherein the chain type mold conveying device comprises a plurality of molds and a second driving device which are arranged in parallel, any two adjacent molds are hinged with each other, so that the plurality of molds form a mold conveying chain which can be driven and is formed by the molds, and the second driving device drives the mold conveying chain to drive; the mold is in a strip shape, a plurality of semi-bottle-shaped grooves are formed in the strip-shaped end faces of the front side and the back side of the strip-shaped mold in parallel, the bottleneck of each semi-bottle-shaped groove is communicated with the top end face of the mold, an exhaust channel communicated to the bottom end face of the mold is arranged at the bottle bottom of each semi-bottle-shaped groove, and any two adjacent molds can be tightly buckled with each other in the transmission process along with the mold conveying chain, so that the semi-bottle-shaped grooves on the two adjacent molds can be buckled to form bottle-shaped cavities; after the two adjacent molds are tightly buckled with each other, the top surfaces of the two molds are connected to form a blow molding plane, and the mold conveying chain has a certain length, so that the plurality of molds arranged in parallel can be tightly buckled with each other two by two, and a blow molding plane with a certain length is formed at the top of the plurality of molds arranged in parallel; the blow molding assembly comprises an air pump and a box body with an open bottom, the air pump is communicated with the box body through a pipeline, the box body with the open bottom is located above a blow molding plane formed on the mold conveying chain, and a sealing assembly is arranged between the open bottom edge of the box body and the blow molding plane.

2. The continuous automatic production line for plastic bottles in batches according to claim 1, characterized in that: the sealing assembly comprises two rollers which are arranged on a blow molding plane in tandem in the transmission direction of the mold conveying chain and two baffles which are respectively positioned on the left side and the right side of the blow molding plane, the tops of the two baffles are respectively inserted into the side walls at the left end and the right end of the box body, the inserting plate is in up-and-down sliding fit with the side walls of the box body, and the tops of the two rollers are in sealing fit with the edges of the front side and the rear side of an opening at the bottom of the box body through flexible; a gap is left between the bottom of the two rollers and the blow plane to allow the plastic plate to pass through.

3. The continuous automatic production line for plastic bottles in batches according to claim 2, characterized in that: the second driving device comprises a driving rotating shaft, a driven rotating shaft, two driving gears coaxially arranged on the driving rotating shaft, two driven gears coaxially arranged on the driven rotating shaft and a second driving motor, and a power output shaft of the second driving motor is in transmission connection with the driving rotating shaft; and tooth grooves meshed with the teeth of the gear are respectively arranged at the positions, close to the edges, of the left side and the right side of the bottom of each die.

4. The continuous automatic production line for plastic bottles in batches according to claim 3, characterized in that: the continuous heating equipment for the plastic plates comprises a conveyor belt, a first driving device for driving the conveyor belt to drive, and an oven arranged along the conveyor belt, wherein a feed port is formed in one end of the oven, a discharge port is formed in the other end of the oven, and the upper belt surface of the conveyor belt penetrates through the feed port and the discharge port of the oven respectively; the conveyer belt is made by the flexible sheet metal of end to end butt joint, and first drive arrangement includes initiative winding up roller, driven winding up roller and first driving motor, first driving motor's power output shaft is connected with the transmission of initiative winding up roller, the conveyer belt cover is on initiative winding up roller and driven winding up roller.

5. The continuous automatic production line for plastic bottles in batches according to claim 4, characterized in that: the top belt surface of the conveyor belt is obliquely arranged, and the lower end of the top belt surface of the conveyor belt is positioned above the front end of the blow molding plane.

6. The continuous automatic production line for plastic bottles in batches according to claim 5, characterized in that: the notching equipment comprises a support, a cutter seat, a cylindrical cutter fixed on the cutter seat and a third driving device for driving the cylindrical cutter to move up and down to perform a cutting action, wherein the third driving device is a vertically arranged air cylinder.

7. The continuous automatic production line for plastic bottles in batches according to claim 6, characterized in that: the cutter holder consists of a main cutter holder and an auxiliary cutter holder, the main cutter holder and the auxiliary cutter holder are in sliding fit in the transverse direction, the cylindrical cutter is vertically and fixedly arranged on the main cutter holder, a cylinder body of the cylinder is fixed on the support, and a push rod of the cylinder is fixedly connected with the auxiliary cutter holder; and a return spring is connected between the auxiliary tool apron and the main tool apron.

8. The continuous automatic production line for plastic bottles in batches according to claim 7, characterized in that: the material receiving equipment comprises an upper clamping roller, a lower clamping roller and a chain for driving the upper clamping roller or the lower clamping roller to rotate, a first gear is arranged at the end part of the upper clamping roller or the lower clamping roller, a second gear is arranged on a driving rotating shaft or a driven rotating shaft, and two ends of the chain are respectively sleeved on the first gear and the second gear to enable the first gear and the second gear to be in transmission connection.

Technical Field

The invention belongs to the technical field of machinery, and particularly relates to a continuous automatic production line for plastic bottles in batches.

Background

Plastic bottles are indispensable containers for pharmaceutical packaging and daily life, and in the past, plastic bottles have generally been produced by a blow molding process, i.e. a hot-melt parison closed in a mold is blown up by means of gas pressure to form a hollow article. Blow molding is divided into extrusion blow molding and injection blow molding.

Blow molding is used in plastic bottle production lines primarily for the production of thin-walled hollow plastic products, such as water or soda bottles, pipes, automobile bumpers and the like. Most thermoplastics include materials such as PET, PS, and PC that can be processed by blow molding, as well as glass. For the production of asymmetric parts, extrusion blow molding is commonly used. In a production line process, injection molding is performed on a parison that is then moved to a blow molding machine for injection blow molding.

The blow molding process of the existing production line comprises the following four standard steps:

1) the parison is mounted on the blow head of the machine and then placed in a mold, which is divided into two halves.

2) The hot air is blown through the blowing head to form a blank, which is expanded to the shape of the mold.

3) Cooling in the mold for a few seconds, cooling before demolding.

4) Removing additional material from both ends to complete the article.

The existing production line has the following defects: 1. all plastic bottles need to be firstly manufactured into parisons before the blow molding step, so that the production steps are increased, the equipment cost of a production line is increased, however, for the plastic bottles with large bottle mouths and short bottle bodies, the plastic bottles can be completely directly blown into bottle shapes from plates without manufacturing the parisons, and at present, equipment for directly blow molding from plate bodies is not found; 2. the position of the mould is fixed in the blow-moulding process, namely the blow-moulding process still belongs to intermittence and does not belong to real continuous production, so the production efficiency is low.

Disclosure of Invention

In view of the above, the present invention provides a plastic bottle batch continuous automatic production line, which shortens the plastic bottle production steps, realizes continuous production of plastic bottles by continuous blow molding, and solves the technical problem of high equipment cost in the existing blow molding production line.

The invention is realized by the following technical means:

the invention relates to a plastic bottle batch continuous automatic production line, which comprises plastic plate continuous heating equipment, blow molding equipment, notching equipment and material receiving equipment; the blow molding equipment comprises a chain type mold conveying device and a blow molding assembly, wherein the chain type mold conveying device comprises a plurality of molds and a second driving device which are arranged in parallel, any two adjacent molds are hinged with each other, so that the plurality of molds form a mold conveying chain which can be driven and is formed by the molds, and the second driving device drives the mold conveying chain to drive; the mold is in a strip shape, a plurality of semi-bottle-shaped grooves are formed in the strip-shaped end faces of the front side and the back side of the strip-shaped mold in parallel, the bottleneck of each semi-bottle-shaped groove is communicated with the top end face of the mold, an exhaust channel communicated to the bottom end face of the mold is arranged at the bottle bottom of each semi-bottle-shaped groove, and any two adjacent molds can be tightly buckled with each other in the transmission process along with the mold conveying chain, so that the semi-bottle-shaped grooves on the two adjacent molds can be buckled to form bottle-shaped cavities; after the two adjacent molds are tightly buckled with each other, the top surfaces of the two molds are connected to form a blow molding plane, and the mold conveying chain has a certain length, so that the plurality of molds arranged in parallel can be tightly buckled with each other two by two, and a blow molding plane with a certain length is formed at the top of the plurality of molds arranged in parallel; the blow molding assembly comprises an air pump and a box body with an open bottom, the air pump is communicated with the box body through a pipeline, the box body with the open bottom is located above a blow molding plane formed on the mold conveying chain, and a sealing assembly is arranged between the open bottom edge of the box body and the blow molding plane.

Furthermore, the sealing assembly comprises two rollers which are arranged on a blow molding plane in tandem in the transmission direction of the mold conveying chain and two baffles which are respectively positioned at the left side and the right side of the blow molding plane, the tops of the two baffles are respectively inserted into the side walls at the left end and the right end of the box body, the inserting plate is in up-down sliding fit with the side walls of the box body, and the tops of the two rollers are in sealing fit with the edges of the front side and the rear side of the opening at the bottom of the box body through flexible materials; a gap is left between the bottom of the two rollers and the blow plane to allow the plastic plate to pass through.

Further, the second driving device comprises a driving rotating shaft, a driven rotating shaft, two driving gears coaxially arranged on the driving rotating shaft, two driven gears coaxially arranged on the driven rotating shaft, and a second driving motor, wherein a power output shaft of the second driving motor is in transmission connection with the driving rotating shaft; and tooth grooves meshed with the teeth of the gear are respectively arranged at the positions, close to the edges, of the left side and the right side of the bottom of each die.

Further, the continuous heating equipment for the plastic plates comprises a conveyor belt, a first driving device for driving the conveyor belt to drive, and an oven arranged along the conveyor belt, wherein a feeding hole is formed in one end of the oven, a discharging hole is formed in the other end of the oven, and the upper belt surface of the conveyor belt penetrates through the feeding hole and the discharging hole of the oven respectively; the conveyer belt is made by the flexible sheet metal of end to end butt joint, and first drive arrangement includes initiative winding up roller, driven winding up roller and first driving motor, first driving motor's power output shaft is connected with the transmission of initiative winding up roller, the conveyer belt cover is on initiative winding up roller and driven winding up roller.

Further, the top belt surface of the conveyor belt is obliquely arranged, and the lower end of the top belt surface of the conveyor belt is positioned above the front end of the blow molding plane.

Further, the notching equipment comprises a support, a cutter seat, a cylindrical cutter fixed on the cutter seat and a third driving device for driving the cylindrical cutter to move up and down to perform a cutting action, wherein the third driving device is a vertically arranged air cylinder.

The cutter holder is composed of a main cutter holder and an auxiliary cutter holder, the main cutter holder and the auxiliary cutter holder are in sliding fit in the transverse direction, the cylindrical cutter is vertically and fixedly arranged on the main cutter holder, a cylinder body of the cylinder is fixed on the support, and a push rod of the cylinder is fixedly connected with the auxiliary cutter holder; and a return spring is connected between the auxiliary tool apron and the main tool apron.

Furthermore, the material receiving equipment comprises an upper clamping roller, a lower clamping roller and a chain for driving the upper clamping roller or the lower clamping roller to rotate, a first gear is arranged at the end part of the upper clamping roller or the lower clamping roller, a second gear is arranged on the driving rotating shaft or the driven rotating shaft, and two ends of the chain are respectively sleeved on the first gear and the second gear to enable the first gear and the second gear to be in transmission connection.

The invention has the following beneficial effects: the invention relates to a plastic bottle batch continuous automatic production line, which comprises plastic plate continuous heating equipment, blow molding equipment, notching equipment and material receiving equipment; the blow molding equipment comprises a chain type mold conveying device and a blow molding assembly, wherein the chain type mold conveying device comprises a plurality of molds and a second driving device which are arranged in parallel, any two adjacent molds are hinged with each other, so that the plurality of molds form a mold conveying chain which can be driven and is formed by the molds, and the second driving device drives the mold conveying chain to drive. The plastic bottle batch continuous automatic production line shortens the production steps of plastic bottles, realizes the continuous production of plastic bottles by continuous blow molding, and obviously improves the production efficiency of the plastic bottles. The plastic bottle batch continuous automatic production line is particularly suitable for producing plastic bottles with large bottle mouths and short bottle bodies.

Drawings

The invention is further described below with reference to the figures and examples.

FIG. 1 is a schematic side view of a continuous automatic batch production line for plastic bottles according to the present invention;

FIG. 2 is a schematic perspective view of a continuous automatic batch production line for plastic bottles according to the present invention;

FIG. 3 is a schematic perspective view of a mold in the continuous automatic production line for plastic bottles in batch according to the present invention;

FIG. 4 is a schematic sectional view of a mold in the continuous automatic production line for plastic bottles in batch according to the present invention;

FIG. 5 is a schematic structural view of a notching device in the continuous automatic production line for plastic bottles in batch.

Detailed Description

The invention will be described in detail below with reference to the following drawings:

as shown in fig. 1-5: the plastic bottle batch continuous automatic production line of the embodiment comprises a plastic plate continuous heating device 100, a blow molding device 200, a notching device 300 and a receiving device 400; the blow molding equipment 200 comprises a chain type mold conveying device and a blow molding assembly, wherein the chain type mold conveying device comprises a plurality of molds 201 and a second driving device which are arranged in parallel, any two adjacent molds are hinged with each other, so that the plurality of molds form a mold conveying chain 210 which can be driven and is formed by the molds, and the second driving device drives the mold conveying chain 210 to drive; the mold 201 is in a long strip shape, a plurality of semi-bottle-shaped grooves 202 are formed in the long strip-shaped end faces of the front side and the rear side of the long strip-shaped mold in parallel, the bottleneck of each semi-bottle-shaped groove 202 is communicated with the top end face of the mold, an exhaust channel 203 communicated to the bottom end face of the mold is formed in the bottle bottom of each semi-bottle-shaped groove, and any two adjacent molds can be tightly buckled with each other in the transmission process of a mold conveying chain, so that the semi-bottle-shaped grooves on the two adjacent molds can be buckled to form bottle-shaped cavities 204; after the two adjacent molds are tightly buckled with each other, the top surfaces of the two molds are connected to form a blow molding plane 205, and the mold conveying chain has a certain length, so that the plurality of molds arranged in parallel can be tightly buckled with each other two by two, and a blow molding plane with a certain length is formed at the top of the plurality of molds arranged in parallel;

the blow molding assembly comprises an air pump 206 and a box body 207 with an open bottom, the air pump is communicated with the box body through a pipeline, the box body 207 with the open bottom is positioned above a blow molding plane formed on the mold conveying chain, and a sealing assembly is arranged between the open bottom edge of the box body and the blow molding plane. Specifically, the second driving device comprises a driving rotating shaft 211, a driven rotating shaft 212, two driving gears 213 coaxially arranged on the driving rotating shaft, two driven gears 214 coaxially arranged on the driven rotating shaft, and a second driving motor 215, wherein a power output shaft of the second driving motor is in transmission connection with the driving rotating shaft; the left side and the right side of the bottom of each die 201 are respectively provided with a tooth socket 216 which is meshed with the teeth of the gear.

The continuous heating equipment 100 for the plastic plates comprises a conveyor belt 101, a first driving device for driving the conveyor belt to drive, and an oven 102 arranged along the conveyor belt, wherein a feeding hole is formed in one end of the oven, a discharging hole is formed in the other end of the oven, and the upper belt surface of the conveyor belt penetrates through the feeding hole and the discharging hole of the oven respectively; the conveying belt is made of flexible metal plates in end-to-end butt joint, the first driving device comprises a driving winding roller 103, a driven winding roller 104 and a first driving motor, a power output shaft of the first driving motor is in transmission connection with the driving winding roller 103, and the conveying belt is sleeved on the driving winding roller 103 and the driven winding roller 104.

The notching device 300 comprises a bracket 301, a tool apron 302, a cylindrical cutter 303 fixed on the tool apron, and a third driving device for driving the cylindrical cutter to move up and down to perform a cutting action, wherein the third driving device is a vertically arranged air cylinder 304. Specifically, the cylindrical cutters are provided with a plurality of cutters, and the cutter edge of each cylindrical cutter is over against the bottle mouth of the bottle-shaped cavity formed when the plurality of molds are tightly buckled with each other.

Specifically, still include the controller, the controller respectively with first driving motor, second driving motor, air pump, cylinder circuit connection, control first driving motor, second driving motor, air pump, cylinder concerted action through the controller for the controller can accurate control cylinder action, just can fall in the bottleneck department of mould after the edge of a knife of cylinder cutter falls promptly every time.

The invention relates to a working principle of a plastic bottle batch continuous automatic production line, which comprises the following steps:

firstly, a PE or PP plastic plate is continuously heated from the belt surface of a conveyor belt of a plastic plate continuous heating device, then enters an oven from a feed inlet under the drive of the conveyor belt, the plastic plate is softened in the process of passing through the oven, the softened plastic plate is conveyed to a blow molding plane by the conveyor belt, the softened plastic plate is conveyed to the inner side of a box body along with the transmission of a mold conveying chain, the softened plastic plate is gradually stretched and attached to the surface of a cavity of a bottle body-shaped cavity under the action of air pressure released by an air pump, after the blow molding is finished, the plastic plate after the blow molding passes through a notch device along with the transmission of the mold conveying chain, and the plastic plate at the bottle mouth of the mold is cut off by the notch device, so that a formed bottle body is separated; the bottle bodies cut off the plastic plate continue to move along with the mold conveying chain, and finally naturally fall off from the molds when the two adjacent molds are separated from each other.

As a further improvement of the technical scheme, the sealing assembly comprises two rollers 208 which are arranged on a blow molding plane in tandem in the transmission direction of the mold conveyor chain, and also comprises two baffles 209 which are respectively positioned at the left side and the right side of the blow molding plane, the tops of the two baffles 209 are respectively inserted into the side walls at the left end and the right end of the box body, the inserting plates are in up-and-down sliding fit with the side walls of the box body, and the tops of the two rollers 208 are in sealing fit with the edges of the front side and the rear side of an opening at the bottom of the box; a gap is left between the bottom of the two rollers and the blow plane to allow the plastic plate to pass through. The sealing assembly can reduce the air pressure leakage speed, so that the electric energy required by the blow molding process is saved.

As a further improvement of the above technical solution, the top belt surface of the conveyor belt is disposed obliquely, and the lower end of the top belt surface of the conveyor belt is located above the front end of the blow molding plane. The aim of the above arrangement is to allow the softened plastic sheet to naturally transition to the blow plane of the mold conveyor chain.

As a further improvement of the above technical solution, the tool post 302 is composed of a main tool post 305 and an auxiliary tool post 306, the main tool post and the auxiliary tool post are in sliding fit in the transverse direction, the cylindrical cutter is vertically and fixedly arranged on the main tool post 305, a cylinder body of the cylinder 304 is fixed on the bracket, and a push rod of the cylinder is fixedly connected with the auxiliary tool post; a return spring 307 is connected between the auxiliary tool apron and the main tool apron. When the cylindrical cutter moves downwards to contact with the plastic plate, the main cutter seat is fixed, the plastic plate still moves along with the mold conveying chain, the notch is inevitably inclined, and when the main cutter seat can move synchronously along with the mold conveying chain under the thrust of the friction force of the plastic plate, the problem of the inclination of the cutter edge at the bottle mouth can be avoided.

As a further improvement of the above technical scheme, the material receiving device 400 includes an upper nip roller 401, a lower nip roller 402, and a chain for driving the upper nip roller or the lower nip roller to rotate, a first gear is disposed at an end of the upper nip roller or the lower nip roller, a second gear is disposed on the driving rotating shaft or the driven rotating shaft, and two ends of the chain are respectively sleeved on the first gear and the second gear to enable the first gear and the second gear to be in transmission connection. The transmission connection of the upper or lower nip rollers with the driving or driven rotary shaft by means of a chain is easy to implement in the prior art and is therefore not described in detail. When the plastic plate recovery device works, the plastic plate serving as the residual material can continuously move forward under the clamping and driving of the upper clamping roller and the lower clamping roller, and then the residual material of the plastic plate can be smoothly conveyed to the next recovery process.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.