CN104690868A - Automatic capping machine - Google Patents

Abstract

The invention discloses an automatic capping machine, which comprises a first rack, a second rack, a screw extrusion device, a forming die, a hydraulic station, a cooling device and a control device, wherein when the automatic capping machine is used for forming, a compression die consisting of an upper die and a lower die is arranged among a first upper die seat, a second upper die seat and a first lower die seat of the forming die, plastic raw materials are directly added into a die cavity at the forming temperature, then the die is closed, and the plastic raw materials are converted into plastic finished pieces after solidification and shaping; the oil cylinder is embedded into the first lower die base and is integrally formed with the first lower die base; the oil distribution disc is arranged on the inner ring of the first lower die base and is integrally formed with the first lower die base, so that the number of contacts between the cylinder body of the oil cylinder, the piston rod and the first lower die base is greatly reduced, the number of the contacts is less, the number of oil leakage points is less, oil leakage is reduced, and the cost is saved.

Description

An automatic capping machine

technical field

The invention relates to the technical field of capping machines, in particular to an automatic capping machine.

Background technique

At present, the large plate, the piston rod and the oil distribution plate of the capping machine are of split design, and the oil circuit is set outside the large plate, so there are many oil leakage points in the interconnected places. On the one hand, it causes a lot of waste of hydraulic oil; The hydraulic oil pollutes the machine table and is difficult to clean; moreover, the hydraulic station used in the current capping machine adopts a one-in-one-out design, and the upper mold and the lower mold are directly pressed together at one time, resulting in direct collision loss of the upper mold and the lower mold Large, the mold needs to be replaced after a period of use, which greatly shortens the service life of the mold.

Therefore, be badly in need of providing an automatic capping, to solve the deficiencies in the prior art.

Contents of the invention

The present invention provides an automatic capping machine to overcome the above defects, which greatly prolongs the service life of the mould, reduces the leakage point of the mould, greatly reduces the leakage of hydraulic oil, and saves the cost.

To achieve the above object, the present invention adopts the following technical solutions:

An automatic capping machine, comprising a first frame, a second frame, a screw extruder, a molding die, a hydraulic station, a cooling device and a control device, the screw extruder and the control device are located in the On the first frame, a mechanical cam is arranged on the second frame, and the forming mold is arranged above the mechanical cam, and the forming mold includes a connecting pipe, an upper mold, a lower mold, an oil separator, an upper Water tray, lower water distribution tray, oil cylinder, rotary joint and hydraulic valve, the periphery of one end of the connecting pipe is integrally formed with a first upper mold seat, and the periphery of the first upper mold seat is provided with a plurality of first upper mold joints. One end of the connecting pipe provided with the first upper mold seat is connected with the second upper mold seat, the periphery of the second upper mold seat is provided with a plurality of second upper mold connecting grooves, the other end of the connecting pipe A first lower mold seat is connected, and the periphery of the first lower mold seat is provided with a plurality of first lower mold connecting grooves; the upper mold is installed in the first upper mold connecting groove and the second upper mold connecting groove superior;

The lower mold is installed on the groove of the first lower mold;

The oil cylinder is embedded in the first lower mold seat and integrally formed with the first lower mold seat;

The hydraulic valve is embedded in the first lower mold seat and is located outside or inside the oil cylinder, and the hydraulic valve is connected to the oil cylinder through an internal oil pipe;

The rotary joint is arranged on the top surface of the molding die;

The oil separator is arranged on the inner side of the first lower mold seat and integrally formed with the first lower mold seat;

The hydraulic station is connected to the rotary joint through a pipeline, and the rotary joint is connected to the oil distribution pan through a pipeline;

The upper water distribution tray is arranged on the first upper mold seat for cooling the upper mold, and the lower water distribution tray is arranged on the first lower mold seat for cooling the lower mold;

The cooling device is connected to the rotary joint through a pipeline, and the rotary joint is connected to the upper water distribution pan and the lower water distribution pan through a pipeline.

Preferably, the hydraulic station includes a first motor, a first output pump, a second motor and a second output pump, the first motor drives the first output pump to output low-pressure high-flow hydraulic oil, and the second The motor drives the second output pump to output high pressure and low flow hydraulic oil.

Preferably, the screw extruder is provided with a material inlet and a material outlet, and the second frame is also provided with a scraper knife frame and a distribution frame, and the scraper knife frame is provided with a scraper A material knife, the sub-cover plate is provided on the material distribution frame, the sub-cover plate is connected to the discharge trough, and the screw extrusion device is driven by a gear box.

Preferably, the center of the second upper mold base is provided with a first connecting hole, the center of the first lower mold base is provided with a second connecting hole, and the center of the connecting pipe is provided with a third connecting hole, so The first connection hole, the second connection hole and the third connection hole are all circular, the diameters of the first connection hole, the second connection hole and the third connection hole are equal, and the The circle centers of the first connecting hole, the second connecting hole and the third connecting hole are on a straight line.

Preferably, the inner periphery of the first connection hole is provided with a first guide port, the inner periphery of the second connection hole is provided with a second guide port, and the inner periphery of the third connection hole is provided with a third guide port. The shape of the first guide port, the second guide port and the third guide port are equal, and the first guide port, the second guide port and the third guide port are aligned with each other.

Preferably, the second upper mold base is detachably connected to the connecting pipe, and the first lower mold base is detachably connected to the connecting pipe.

Preferably, the hydraulic valve is a cartridge valve, and the oil pipe is a hose.

Preferably, the cooling device is a chiller.

Preferably, the control device includes a man-machine interface, a PLC controller and a control switch, and the man-machine interface and the control switch are both connected to the PLC controller.

Preferably, air blowing holes are provided on the upper mold.

The invention discloses an automatic capping machine, which comprises a first frame, a second frame, a screw extrusion device, a molding die, a hydraulic station, a cooling device and a control device. Compared with the prior art, the automatic Capping machine, when forming, install the compression mold composed of the upper mold and the lower mold between the first upper mold seat, the second upper mold seat, and the first lower mold seat of the forming mold, and directly add the plastic raw materials to the molding In the mold cavity at high temperature, the mold is closed, and the plastic pellets, powder or prefabricated group are gradually plasticized and filled with the closed mold cavity under the action of pressure and heat, and finally after a certain period of curing and setting Transformed into plastic parts, compared with injection molding, compression molding does not require a pouring system, and ordinary presses can be used; the control of the production process is simple; the performance of plastic compression molding plastic parts is more uniform, with small shrinkage and Small deformation and other characteristics, the oil cylinder is embedded in the first lower mold seat and integrally formed with the first lower mold seat; the oil separator is arranged on the inner ring of the first lower mold seat and The lower mold seat is integrally formed, which greatly reduces the contact points between the cylinder block, piston rod and the first lower mold seat. The fewer the joints, the fewer oil leakage points, which can greatly reduce the leakage and waste of hydraulic oil and save The cost is reduced, the environment is protected, and the cleaning difficulty of the rack is reduced.

Description of drawings

The present invention will be further described with the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

Fig. 1 is a structural schematic diagram of an automatic capping machine of the present invention.

Fig. 2 is a sectional view of an automatic capping machine of the present invention.

Fig. 3 is a schematic structural view of the first lower mold base, oil cylinder and oil separator of an automatic capping machine of the present invention.

Fig. 4 is a structural schematic diagram of a molding die of an automatic capping machine of the present invention.

Fig. 5 is a schematic structural view of the second upper mold seat of an automatic capping machine of the present invention.

Fig. 6 is a schematic structural view of the first upper mold seat of an automatic capping machine of the present invention.

Fig. 7 is a working principle diagram of an automatic capping machine of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described, and this is a preferred embodiment of the present invention.

Example 1

As shown in Figure 1-3, an automatic capping machine includes a first frame 1, a second frame 2, a screw extrusion device 3, a molding die 4, a hydraulic station 5, a cooling device and a control device 7, the The screw extrusion device 3 and the control device 7 are arranged on the first frame 1, the second frame 2 is provided with a mechanical cam 21, and the molding die 4 is arranged above the casing cam 21 , the forming mold 4 includes a connecting pipe 41, an upper mold 42, a lower mold 43, an oil separator 44, an upper water separator, a lower water separator, an oil cylinder 47, a rotary joint 48 and a hydraulic valve 49, and the connecting pipe 41 The periphery of one end is integrally formed with a first upper mold seat 8, the periphery of the first upper mold seat 8 is provided with several first upper mold connecting grooves 81, and the connecting pipe 41 is provided with one end of the first upper mold seat 8 Connected with the second upper mold base 9, the periphery of the second upper mold base 9 is provided with several second upper mold connecting grooves 91, the other end of the connecting pipe 41 is connected with the first lower mold base 10, the first lower mold base 10 is connected The periphery of the lower mold seat 10 is provided with some first lower mold connecting grooves; the upper mold 42 is installed on the first upper mold connecting groove 81 and the second upper mold connecting groove 91; the lower mold 43 Installed on the connecting groove of the first lower mold; the oil cylinder 47 is embedded in the first lower mold seat 10 and integrally formed with the first lower mold seat 10;

The oil separator 44 is arranged on the inner ring of the first lower mold base 10 and integrally formed with the first lower mold base 10;

The hydraulic valve 49 is embedded in the first lower mold seat 10 and is located outside or inside the oil cylinder 47, and the hydraulic valve 49 is connected to the oil cylinder 47 through an internal oil pipe;

The rotary joint 48 is located on the top surface of the molding die 4;

The hydraulic station 5 is connected to the rotary joint 48 through a pipeline, and the rotary joint 48 is connected to the oil separator 44 through a pipeline;

The upper water distribution tray is arranged on the first upper mold holder 81 for cooling the upper mold 42, and the lower water distribution tray is arranged on the first lower mold holder 10 for cooling the lower mold 43;

The cooling device 6 is connected to the rotary joint 48 through a pipeline, and the rotary joint 48 is connected to the upper water distribution pan and the lower water distribution pan through a pipeline.

In particular, as a design point of the present invention, the lower mold 43 is installed on the groove of the first lower mold, and the oil cylinder 47 is embedded in the first lower mold seat 10 and is connected with the first lower mold seat. 10 is integrally formed; the hydraulic valve 49 is embedded in the first lower mold seat 10 and is located outside or inside the oil cylinder 47, and the hydraulic valve 49 is connected to the oil cylinder 47 through an internal oil pipe; the oil separator 44 is set on the inner ring of the first lower mold base 10 and is integrally formed with the first lower mold base 10; compared with the existing split design, it greatly reduces the The fewer the contacts between the mold bases 10, the fewer the oil leakage points, which can greatly reduce the leakage and waste of hydraulic oil and reduce the difficulty of cleaning the frame.

Preferably, the hydraulic station 5 includes a first motor 51, a first output pump 52, a second motor 53 and a second output pump 54, and the first motor 51 drives the first output pump 52 to output low pressure and high flow rate hydraulic oil, the second motor drives 53 and the second output pump 54 outputs high-pressure low-flow hydraulic oil.

As another design point of the present invention, the hydraulic station 5 adopts a high-low pressure design, that is, the hydraulic oil output from the hydraulic station 5 is divided into two types: high-pressure low-flow and low-pressure high-flow. First, the first motor 51 drives the first output pump 52 to output The hydraulic oil with low pressure and high flow enters the rotary joint 48 through the pipeline, and then enters the oil distribution plate 44 from the rotary joint 48, and is divided into each hydraulic valve from the oil distribution plate 44, and then the hydraulic oil is driven by the mechanical movement of the hydraulic valve 49. Oil cylinder 47, under the drive of the hydraulic oil of low pressure and high flow rate, oil cylinder 47 drives lower die 43 to move upward quickly, reaches the buffer zone close to upper die 42; Then first motor 51 stops oil supply, second motor 53 supplies oil, the The second motor 53 drives the second output pump 54 to output high-pressure and low-flow hydraulic oil. Driven by the high-pressure and low-flow hydraulic oil, the hydraulic oil drives the cylinder 47 through the mechanical movement of the hydraulic valve 49, and the cylinder 47 drives the lower mold 43. Continue to move upwards and close the mold with the upper mold 42. Since it is high-pressure and low-flow hydraulic oil at this time, the lower mold 43 and the upper mold 42 are closed at a high pressure and slow speed, which can reduce the collision loss between the upper mold 42 and the lower mold 43. The service life of the mold is greatly extended; and the oil cylinder 47 works under the condition of low pressure and high flow, and the up and down movement of the oil rod and piston rod can be controlled by the low pressure, which reduces the power of the motor and reduces energy consumption. At the same time, the products produced under high pressure and low flow The quality is high and the molding effect is good; because the lower mold 43 is driven by low-pressure high-flow hydraulic oil, it quickly reaches the buffer zone close to the upper mold 42, which improves the production speed of the product.

Preferably, the screw extrusion device 3 is provided with a material inlet 31 and a material outlet 32, and the second frame 2 is also provided with a scraper knife frame 21 and a material distribution rack 22, and the scraper A scraper 23 is provided on the knife frame 21 , and a sub-cover plate 24 is provided on the material distribution frame 22 , the sub-cover plate 24 is connected to a discharge chute, and the screw extruder 3 is driven by a gear box 6 . The screw extruder 3 is a screw extruder. The plastic raw material enters the screw extruder from the feed port 31, is heated, melted and plasticized, and is extruded quantitatively from the discharge port 32. The molten plastic raw material has a high viscosity, and the scraper knife 23 scrapes a little amount of extruded raw material, then blows it into the lower die 43 through the blow hole on the upper die 42, and the formed bottle cap enters the sub-cap plate 24, and is discharged through the discharge chute.

As shown in Figures 4-6, preferably, the center of the second upper mold base 9 is provided with a first connection hole 92, and the center of the first lower mold base 8 is provided with a second connection hole 82. The center of the connecting pipe 41 is provided with a third connecting hole, the first connecting hole 92, the second connecting hole 82 and the third connecting hole are all circular, the first connecting hole 92, the second connecting hole The diameters of the second connecting hole 82 and the third connecting hole are equal, and the circle centers of the first connecting hole 92 , the second connecting hole 82 and the third connecting hole are on a straight line. The structure is simple, easy to form, and can meet the operation requirements of the machine.

Preferably, the inner periphery of the first connection hole 92 is provided with a first guide port 94, the inner periphery of the second connection hole 82 is provided with a second guide port 83, and the inner periphery of the third connection hole 94 is A third guide port is provided, the shapes of the first guide port 94, the second guide port 83 and the third guide port 95 are equal, and the first guide port 94, the second guide port 83 and the third guide port 95 are equal in shape. The third guide ports are aligned with each other. Allows for easy operator alignment to easily mount the pan mechanism to the rotary shaft.

Preferably, the second upper mold base 9 is detachably connected to the connecting pipe 41 , and the first lower mold base 8 is detachably connected to the connecting pipe 41 . This setting is convenient to install the mold on the second upper mold base 9 and the first lower mold base 8, and then connect the second upper mold base 9 and the first lower mold base 8 to the connecting pipe 1, which has good practicability.

Preferably, the hydraulic valve 49 is a cartridge valve for easy installation; the oil pipe is a hose. The use of hoses instead of hard pipes can further reduce hydraulic oil leakage.

Preferably, the cooling device is a chiller. The cooling water output from the chiller enters the conversion joint 48 through the pipeline, then enters the conversion joint 48 and sends it to the upper water distribution tray and the lower water distribution tray for cooling the upper mold 42 and the lower mold 43 respectively. The cooling water flow rate of the water tray and the lower water distribution tray is large, and the cooling effect is good. The better the cooling effect, the better the bottle cap molding effect, and the higher the product quality.

Preferably, the control device 7 includes a man-machine interface 71, a PLC controller and a control switch 72, and the man-machine interface 71 and the control switch 72 are both connected to the PLC controller. The operating parameters are set through the man-machine interface 71, and the running and stopping of the machine are controlled through the control switch.

Preferably, the upper mold 42 is provided with blowing holes. Because the bottle cap molding of molding is on the upper mold 42, during demoulding, by blowing air to the blowing holes, the demoulding is helped; in addition, the material on the scraper knife 23 can also be blown into the lower mold.

As shown in Figure 7, the working principle of the automatic capping machine of the present invention is as follows: first, the plastic raw materials are mixed, plasticized, and quantitatively extruded through a screw extrusion device, and then the molten material is hung into the lower mold by a scraper, and the material is blown into the lower mold. The mold, the forming mold is set on the mechanical cam, and the mechanical cam drives the forming mold to rotate. When the hydraulic valve touches the mechanical cam, the oil cylinder drives the lower mold to move upward, and the hydraulic station provides the driving force for the lower mold to move upward. The hydraulic station adopts high and low pressure Design, that is, the hydraulic oil output from the hydraulic station is divided into high-pressure low-flow and low-pressure high-flow. First, the low-pressure high-flow hydraulic oil drives the upper die to move up quickly to reach the buffer close to the upper die, and then the high-pressure and low-flow hydraulic oil drives The upper mold continues to move up and the upper mold is closed, while the mold is cooled and kept under pressure, the plastic melt is solidified, the product is formed, and then the mold is split, the hydraulic oil returns to the hydraulic station, the product is demoulded, and the roller is pressed to the cam by the upper mold release guide rod roller , leading to the lowering of the upper mold demoulding guide rod to drive the upper mold demoulding sleeve to move down, or through the air blowing product to assist stripping, so that the molded product is demoulded to the cover plate, and the material is discharged, and so on.

Compared with the prior art, the automatic capping machine of the present invention, when molding, the compression mold consisting of the upper mold and the lower mold is installed on the first upper mold seat, the second upper mold seat, and the first lower mold of the forming mold. Between the seats, the plastic raw material is directly added into the mold cavity at the molding temperature, and then the mold is closed, and the plastic pellets, powder or prefabricated group are gradually plasticized and filled with the closed mold under the action of pressure and heat Cavity, and finally after a certain period of curing and shaping into plastic parts, compared with injection molding, compression molding does not need a pouring system, and ordinary presses can be used; the control of the production process is simple; the plastic parts of plastic compression molding The performance is more uniform, and has the characteristics of small shrinkage and deformation; the oil cylinder is embedded in the first lower mold seat and integrally formed with the first lower mold seat; the oil separator is set on the first lower mold The inner ring of the seat is integrally formed with the first lower mold seat, which greatly reduces the joints between the cylinder block, the piston rod and the first lower mold seat. The fewer the joints, the less oil leakage points, which can greatly Minimize the leakage and waste of hydraulic oil and reduce the difficulty of cleaning the rack.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to preferred implementation examples, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. an automatic capping machine, comprise the first frame, second frame, screw extrusion apparatus, mould, Hydraulic Station, cooling device and control device, described screw extrusion apparatus and described control device are located in described first frame, described second frame is provided with mechanical cam, described mould is located at above described mechanical cam, described mould comprises tube connector, patrix, counterdie, divide food tray, upper water diversion disk, lower water diversion disk, oil cylinder, swivel joint and hydraulic valve, the edge integral shape of described tube connector one end is provided with the first mold seat, the periphery of described first mold seat is provided with some first mold access slots, one end that described tube connector is provided with the first mold seat is connected with the second mold seat, the periphery of described second mold seat is provided with some second mold access slots, the other end of described tube connector is connected with the first bed die seat, the periphery of described first bed die seat is provided with some first bed die access slots, it is characterized in that:

Described patrix is installed on described first mold access slot and described second mold access slot;

Described counterdie is installed on described first bed die access slot;

It is interior and one-body molded with described first bed die seat that described oil cylinder embeds described first bed die seat;

Described hydraulic valve to embed in described first bed die seat and is positioned at outside described oil cylinder or inner side, and described hydraulic valve is connected with described oil cylinder by internal oil pipe;

Described swivel joint is located on the end face of described mould;

Described point of food tray is located at the inner side of described first bed die seat and one-body molded with described first bed die seat;

Described Hydraulic Station is connected with described swivel joint by pipeline, and described swivel joint is connected with described point of food tray by pipeline;

Described upper water diversion disk is located at for cooling described patrix on described first mold seat, and described lower water diversion disk is located on described first bed die seat for cooling described counterdie;

Described cooling device by pipeline be connected described swivel joint and connect, described swivel joint is connected with described upper water diversion disk and described lower water diversion disk by pipeline.

2. automatic capping machine according to claim 1, it is characterized in that: described Hydraulic Station comprises the first motor, the first rear pump, the second motor and the second rear pump, described first motor drives described first rear pump to export low-pressure high-flowrate hydraulic oil, and described second motor drives described second rear pump to export high pressure low discharge hydraulic oil.

3. automatic capping machine according to claim 1, it is characterized in that: described screw extrusion apparatus is provided with charging aperture and discharging opening, described second frame is also provided with scraper knife rest and material distributing rest, described scraper knife rest is provided with scraper cutter, described material distributing rest is provided with material separating disc and point shrouding disc, described point of shrouding disc connects blow tank, and described screw extrusion apparatus is driven by gear-box.

4. automatic capping machine according to claim 1, it is characterized in that: the center of described second mold seat is provided with the first connecting hole, the center of described first bed die seat is provided with the second connecting hole, the center of described tube connector is provided with the 3rd connecting hole, described first connecting hole, described second connecting hole and described 3rd connecting hole are all rounded, the equal diameters of described first connecting hole, described second connecting hole and described 3rd connecting hole, the center of circle of described first connecting hole, described second connecting hole and described 3rd connecting hole point-blank.

5. automatic capping machine according to claim 4, it is characterized in that: the inner peripheral of described first connecting hole is provided with the first guiding port, the inner peripheral of described second connecting hole is provided with the second guiding port, the inner peripheral of described 3rd connecting hole is provided with the 3rd guiding port, the shape of described first guiding port, described second guiding port and described 3rd guiding port is equal, and described first guiding port, described second guiding port and described 3rd guiding port are aligned with each other.

6. automatic capping machine according to claim 1, is characterized in that: described second mold seat and described tube connector removably connect, and described first bed die seat and described tube connector removably connect.

7. automatic capping machine according to claim 1, is characterized in that: described hydraulic valve is inserted valve, and described oil pipe is flexible pipe.

8. automatic capping machine according to claim 1, is characterized in that: described cooling device is cooling-water machine.

9. automatic capping machine according to claim 1, is characterized in that: described control device comprises man-machine interface, PLC controller and gauge tap, and described man-machine interface, gauge tap are all connected with PLC.

10. automatic capping machine according to claim 1, is characterized in that: described patrix is provided with gas hole.