CN223934120U - Blow molding device - Google Patents

Abstract

The utility model discloses a blow molding device which comprises a support frame, a raw material box arranged on the support frame and a feeding table connected with the raw material box, wherein a workbench and a lifting cylinder are arranged at the bottom of the feeding table, a feeding rod is arranged at the bottom of the feeding table, a left die, a right die and an opening and closing cylinder for driving the left die and the right die to open and close are arranged at the bottom of the workbench in a sliding manner, cooling components are arranged on the left die and the right die, each cooling component comprises a water inlet pipe and a cooling pipe, the water inlet pipe is arranged on a communicating groove of the workbench and the cooling pipe is arranged on the left die and the right die, the water inlet pipe is communicated with the communicating groove, and a water flow switch is arranged between the cooling pipe and the communicating groove. The temperature of the die can be reduced, so that the temperature difference between the die and the heated raw material becomes large. When the blowing, plastics laminating can let the plastic bottle by quick heat exchange on the mould to make the cooling shaping that the product can be faster, can shorten the time of cooling solidification through this kind of mode, thereby improve blowing efficiency.

Description

Blow molding device

Technical Field

The application relates to the field of plastic processing, in particular to a blow molding device.

Background

Blow Molding (Blow Molding) is a plastic processing process that is used primarily to produce hollow plastic articles such as plastic bottles, cans, containers, toys and other industrial products. This process involves extruding molten plastic into a tube (parison) which is then expanded by compressed air and fitted into the interior of a mold to ultimately form the desired product shape.

After blow molding, the molded plastic in the mold needs to be cooled to solidify and then demolded. The cooling and solidifying require a certain time, if the plastic bottle is demoulded in advance, the plastic bottle is relatively high in temperature and soft, and the plastic bottle is easily attached to one of the dies, or the quality of a finished product is unqualified.

Disclosure of Invention

The present utility model aims to overcome the above-mentioned drawbacks of the prior art and to provide a blow molding device. The cooling and solidifying time can be shortened, thereby improving the blowing efficiency.

In order to achieve the above purpose, the present application adopts the following technical scheme:

The blowing device comprises a supporting frame, a raw material box arranged on the supporting frame and a feeding table connected with the raw material box, wherein a workbench and a lifting cylinder for driving the workbench to move up and down are arranged at the bottom of the feeding table, a feeding rod is arranged on the feeding table, a left die, a right die and an opening and closing cylinder for driving the left die and the right die to open and close are arranged at the bottom of the workbench in a sliding manner, a cooling assembly is arranged on the left die and the right die, the cooling assembly comprises a water inlet pipe arranged on the workbench, a communication groove arranged on the workbench and a cooling pipe arranged on the left die and the right die, the water inlet pipe is communicated with the communication groove, and a water flow switch is arranged between the cooling pipe and the communication groove.

Preferably, the water flow switch comprises a switch groove, a switch plate slidingly arranged in the switch groove and a switch spring arranged in the switch groove, wherein the switch plate is provided with a communication hole, the communication hole is positioned between the communication groove and the cooling pipe or between the communication groove and the cooling pipe, one end of the switch plate is also fixed with a linkage plate, and the linkage plate is positioned on the moving path of the left die and the right die.

Preferably, one end of the cooling pipe away from the water inlet pipe is connected with a water outlet pipe, the water inlet pipe is connected with a water source, and the water outlet pipe is also connected to the water source.

Preferably, a cavity is formed in the feeding table, an extrusion plate is slidably arranged in the cavity, the extrusion plate divides the cavity into a pressure cavity and a filling cavity, an extrusion spring for pushing the extrusion plate to move downwards is arranged in the pressure cavity, the raw material box is provided with a feeding channel, the feeding channel is communicated with the filling cavity, a discharging hole is formed in the bottom of the filling cavity, a feeding hole is formed in the working table, the feeding hole is located right below the discharging hole, the feeding rod is located at the feeding hole and blocks the discharging hole, and a discharging assembly capable of pushing the feeding rod and opening the feeding hole is arranged on the working table.

Preferably, the discharging assembly comprises a lifting rod, an abutting part arranged on the lifting rod and positioned right below the feeding rod, the lifting rod is in sliding connection with the workbench, a rack groove is formed in the lifting rod, a motor is fixed on the workbench, and a gear meshed with the rack groove is arranged at the output end of the motor.

Preferably, the feeding table is further provided with a blow molding assembly, the blow molding assembly comprises a blow molding pump and a blow molding pipe connected with the blow molding pump, the blow molding pipe is connected with the feeding rod, and a blow molding hole communicated with the blow molding pipe is formed in the feeding rod.

Preferably, the workbench is further provided with a shearing assembly, the shearing assembly comprises a sliding groove, a sliding block, a cambered surface, a cutting groove, a cutter and a cutting spring, the sliding groove is formed in the workbench, the sliding block is symmetrically arranged on the sliding groove, the cambered surface is arranged on the sliding block, the cutting groove is formed in the sliding block, the cutter is slidably arranged on the cutting groove, the cutting spring is arranged on the cutting groove and used for enabling the cutter to keep thrust, the cutter can enter the cutting groove, and the cambered surface can clamp the feeding rod.

A product is formed by blow molding by the blow molding device.

In summary, the utility model has the following beneficial technical effects:

The temperature of the die can be reduced, so that the temperature difference between the die and the heated raw material becomes large. When the blowing, plastics laminating can let the plastic bottle by quick heat exchange on the mould to make the cooling shaping that the product can be faster, can shorten the time of cooling solidification through this kind of mode, thereby improve blowing efficiency.

Drawings

Fig. 1 is an overall construction diagram of the apparatus of the present utility model.

Fig. 2 is a schematic cross-sectional structure of the present utility model.

Fig. 3 is a schematic view of a partial cross-sectional structure of the present utility model.

Fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 2.

Fig. 6 is an enlarged schematic view of the structure at C in fig. 5.

The reference numerals are 1, a supporting frame, 11, a raw material box, 111, a feeding channel, 12, a feeding table, 121, a squeeze plate, 122, a pressure cavity, 123, a filling cavity, 124, a squeezing spring, 125, a discharging hole, 126, a feeding hole, 13, a feeding rod, 2, a working table, 21, a lifting cylinder, 22, a left die, 23, a right die, 24, an opening and closing cylinder, 3, a cooling assembly, 31, a water inlet pipe, 32, a communicating groove, 33, a cooling pipe, 34, a switching groove, 35, a switching plate, 36, a switching spring, 37, a communicating hole, 38, a linkage plate, 39, a water outlet pipe, 4, a discharging assembly, 41, a lifting rod, 42, an abutting part, 43, a rack groove, 44, a gear, 5, a blowing assembly, 51, a blowing pump, 52, a blowing pipe, 53, a blowing hole, 6, a shearing assembly, 61, a chute, 62, a sliding block, 63, 64, a grooving, 65, a cutter, 66 and a cutting spring.

Detailed Description

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states of the same. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like are used for descriptive and distinguishing purposes only and are not to be construed as indicating or implying a relative importance of the corresponding components.

The present application will be described in further detail with reference to fig. 1 to 6.

The embodiment of the application discloses a blow molding device.

A blow molding device comprises a support frame 1, a raw material box 11, a feeding table 12 and a workbench 2, wherein the raw material box 11 is arranged on the support frame 1, the feeding table 12 is arranged below the support table, and the workbench 2 is arranged right below the feeding table 12. The table 2 is further provided with a lifting cylinder 21, and the lifting cylinder 21 can drive the table 2 to move up and down so as to approach or depart from the feeding table 12. The bottom of the workbench 2 is slidably provided with a left die 22, a right die 23 and an opening and closing cylinder 24 for driving the left die 22 and the right die 23 to open and close.

The raw material tank 11 has a raw material, which is plastic particles, and the raw material tank 11 has a feed passage 111, and the feed passage 111 is heated and then the heated and melted plastic is fed onto a feed table 12 via a screw feed bar 13. The feeding table 12 is provided with a feeding rod 13, the melted raw materials can be changed into a fluid ring shape by utilizing the feeding rod 13 and the feeding table 12 and enter the workbench 2, a left die 22 and a right die 23 are arranged in the workbench 2, annular plastics enter the middle of the two dies, then an opening and closing cylinder 24 drives the left die 22 and the right die 23 to be close to each other, the blow molding assembly 5 arranged on the feeding table 12 can perform blow molding, and then the shearing assembly 6 arranged in the workbench 2 can shear the plastics to manufacture plastic bottle products.

The left die 22 and the right die 23 are provided with the cooling assembly 3, and the cooling assembly 3 can cool down the left die 22 and the right die 23 after die opening, so that the temperature difference between the left die 22, the right die 23 and the heated plastic is increased, and the cooling speed of the plastic is improved.

The feeding table 12 is fixedly connected to the supporting frame 1 through a supporting rod, a cavity is formed in the feeding table 12, an extrusion plate 121 is slidably arranged in the cavity, the extrusion plate 121 divides the cavity into a pressure cavity 122 and a filling cavity 123, an extrusion spring 124 for pushing the extrusion plate 121 to move downwards is arranged in the pressure cavity 122, the feeding channel 111 is communicated with the filling cavity 123, a discharge hole 125 is formed in the bottom of the filling cavity 123, a feeding hole 126 is formed in the workbench 2, the feeding hole 126 is positioned under the discharge hole 125, the feeding rod 13 is positioned at the feeding hole 126 and blocks the discharge hole 125,

The table 2 is provided with a discharge assembly 4 capable of pushing the feed bar 13 and opening the feed port 126. The discharging assembly 4 comprises a lifting rod 41, an abutting part 42 arranged on the lifting rod 41, the abutting part 42 is positioned right below the feeding rod 13, the lifting rod 41 is in sliding connection with the workbench 2, the lifting rod 41 is provided with a rack groove 43, the workbench 2 is fixedly provided with a motor, the output end of the motor is provided with a gear 44 meshed with the rack groove 43, the motor drives the gear 44 to rotate, so that the lifting rod 41 can ascend or descend, and the abutting part 42 can push the feeding rod 13 when the lifting rod 41 ascends.

Raw materials send into filling cavity 123 under the pay-off of spiral feeding rod 13, along with continuing the pay-off, raw materials in the filling cavity 123 are more and more, because the pay-off rod 13 blocks up discharge gate 125 this moment, so discharge gate 125 is sealed, consequently the raw materials can push stripper plate 121 upward in filling cavity 123, let extrusion spring 124 keep sticis the state, thereby the pressure of the filling cavity 123 of increase, when there is certain pressure in filling cavity 123, if discharge gate 125 is opened, then will extrude the raw materials from discharge gate 125 through stripper plate 121 and extrusion spring 124, thereby improve the efficiency of raw materials from discharge gate 125 ejection of compact.

When the raw materials in the filling cavity 123 need to be discharged from the discharge hole 125, the upgrade cylinder drives the workbench 2 to move upwards integrally so that the lower half part of the feeding rod 13 is positioned between the left die 22 and the right die 23, then the lifting rod 41 moves upwards so that the abutting part 42 pushes the feeding rod 13 to move upwards, the discharge hole 125 is opened at the moment, and due to the feeding rod 13, plastics can be discharged from the discharge hole 125 and shaped like a ring, the feeding rod 13 is arranged in the annular raw materials, the blow molding assembly 5 can blow molding the plastics through the feeding rod 13, and the ring-shaped plastics are more easily attached to the plastic bottle cavity when being blown, so that the plastic bottle with higher quality is formed.

The blow molding assembly 5 comprises a blow molding pump 51 and a blow molding pipe 52 connected with the blow molding pump 51, the blow molding pipe 52 is connected with the feeding rod 13, and a blow molding hole 53 communicated with the blow molding pipe 52 is formed in the feeding rod 13. The blow pump 51 delivers the gas through the blow tube 52 into the feed bar 13 and out the blow holes 53. The blow holes 53 blow-mold the annular plastic.

The annular plastic material, after exiting the outlet 125, enters the inlet 126 of the table 2 and is located between the left die 22 and the right die 23. The left die 22 and the right die 23 are combined, the workbench 2 is provided with a shearing assembly 6, the shearing assembly 6 clamps the plastic on the feeding rod 13, the upper part of the annular cylindrical plastic is sealed, at the moment, the blow holes 53 of the feeding rod 13 are blown, the annular cylindrical plastic is inflated, and the plastic is attached to the cavity walls of the left die 22 and the right die 23. The shearing module 6 performs shearing at this time. The left and right molds 23 are then separated to perform blanking.

The shearing assembly 6 comprises a sliding groove 61 formed on the workbench 2 and a sliding block 62 symmetrically arranged on the sliding groove 61, wherein the sliding block 62 can move on the sliding groove 61 in an electric driving mode, and the sliding block 62 can also move in the sliding groove 61 in a screw rod rotating mode, so that the driving mode is not repeated in the prior art. The chute 61 is communicated with the feed inlet 126, the slide block 62 is provided with an arc surface 63, and the arc surface 63 can clamp the annular plastic onto the feed rod 13 along with the movement of the slide block 62.

The slider 62 is provided with a slot 64, the slot 64 is slidably provided with a cutter 65, the slot 64 is also provided with a cutting spring 66, and the cutting spring 66 can push the cutter 65 to move towards the tangential direction.

The upper end of annular tube-shape plastics has been cut to the cut-off knife to cambered surface 63 can continue to press from both sides tightly plastics, has guaranteed the holistic sealing performance in plastic bottle chamber, conveniently carries out the blowing. Thus, a plastic bottle was produced.

Under the effect of cutting spring 66, cutter 65 keeps the state of promotion always, and workstation 2 down moves this moment, can let the plastics separation on a ring section of thick bamboo plastics and the pay-off platform 12 to owing to workstation 2 descends, also can let pay-off pole 13 slightly down move, pay-off pole 13 can block up discharge gate 125, prevents to fill the residual plastics in the chamber 123 and come out from discharge gate 125, thereby makes the plastic bottle in order well and orderly in the processing, has guaranteed that the cutting effect lets the drawing of patterns of plastic bottle more convenient.

The workbench 2 is further provided with a cooling assembly 3, and after the left die 22 and the right die 23 are opened, the cooling assembly 3 cools the left die 22 and the right die 23.

The cooling module 3 has a plurality of cooling modules and can work independently for the left die 22 and the right die 23. The cooling assembly 3 comprises a water inlet pipe 31 arranged on the workbench 2, a communication groove 32 arranged on the workbench 2 and a cooling pipe 33 arranged on the left die 22 and the right die 23, wherein the water inlet pipe 31 is communicated with the communication groove 32, and a water flow switch is arranged between the cooling pipe 33 and the communication groove 32. The cooling water enters the cooling pipe 33 through the water inlet pipe 31 and the communication groove 32 to cool the mold, and when the molds are combined, the water flow switch is closed, and at this time, the communication groove 32 is blocked, and the cooling water cannot enter the cooling pipe 33. When the mold is opened, the mold touches the water flow switch to open the water flow switch, and the communication groove 32 is not blocked, so that the cooling work is performed.

The water flow switch comprises a switch groove 34 arranged in the workbench 2, a switch plate 35 arranged in the switch groove 34 in a sliding manner, and a switch spring 36 arranged in the switch groove 34, wherein the switch groove 34 is communicated with the communication groove 32, the switch plate 35 is provided with a communication hole 37, one end of the switch plate 35 is also fixed with a linkage plate 38, and the linkage plate 38 is positioned on the moving path of the left die 22 and the right die 23.

After the left mold 22 and the right mold 23 are opened, the linkage plate 38 is pushed to enable the switch plate 35 to move in the switch groove 34, so that the communication hole 37 on the switch plate 35 is positioned on the communication groove 32, and the communication groove 32 is not blocked by the switch plate 35. When the left and right molds 22, 23 are closed, the switch spring 36 pulls the switch plate 35 to move the communication hole 37 of the switch plate 35 into the switch groove 34, and the communication groove 32 is blocked by the switch plate 35. Thereby enabling the cooling module 3 to be operated or not.

The cooling tube 33 is connected with a water outlet tube 39 at the end far away from the water inlet tube 31, the water inlet tube 31 is connected with a water source, and the water outlet tube 39 is also connected with the water source. The water source may be a sink or basin. Water is supplied to the cooling unit 3 by a water pump, and the left and right molds 22 and 23 are cooled by the cooling unit 3. The cooled water can continue to enter a water pool or a water tank so as to circulate. After cooling water cools left mould 22 and right mould 23, the mould temperature can reduce to make the difference in temperature of mould and plastics after the heating grow, when the blowing, plastics laminating can let the plastic bottle by quick heat exchange on the mould, thereby make the plastic bottle can be faster cooling shaping, finally realize the speed of the production of plastic bottle.

The embodiment is implemented by the principle that raw materials are conveyed into a filling cavity 123 after being heated and softened through a feeding channel 111, an extruding plate 121 moves upwards along with the increasing of the raw materials, a lifting cylinder 21 pushes a workbench 2 to move upwards, a discharging component 4 pushes a feeding rod 13 to enable the raw materials to come out of a discharging hole 125, the raw materials are changed into annular cylindrical plastics, the annular cylindrical plastics are positioned between a left die 22 and a right die 23, the dies are closed, a sliding block 62 starts to move, a cutter 65 cuts off the plastics, the upper end of the annular cylindrical plastics is clamped by the cutting surface, the workbench 2 slightly moves downwards during the closing process of the dies, the annular cylindrical plastics are separated from the raw materials in the feeding table 12, a blow molding component 5 starts to work, the plastics are adhered to the cavity wall of the dies through blow molding, the dies are opened to two sides after molding, and a cooling component 3 is opened to cool the opened dies.

The above embodiments are not intended to limit the scope of the present utility model, so that those skilled in the art may set forth various alternative configurations and implementations without changing the spirit of the present utility model according to the technical scheme of the present utility model. Accordingly, the foregoing detailed description and drawings are merely exemplary of the utility model and are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Therefore, all equivalent changes according to the structure, shape and principle of the present utility model should be covered in the protection scope of the present utility model.

Claims (7)

1. The blow molding device is characterized by comprising a support frame (1), a raw material box (11) arranged on the support frame (1) and a feeding table (12) connected with the raw material box (11), wherein the bottom of the feeding table (12) is provided with a workbench (2) and a lifting cylinder (21) for driving the workbench (2) to move up and down, the feeding table (12) is provided with a feeding rod (13), a left mold (22), a right mold (23) and an opening and closing cylinder (24) for driving the left mold (22) and the right mold (23) to open and close are arranged at the bottom of the workbench (2), a cooling assembly (3) is arranged on the left mold (22) and the right mold (23), the cooling assembly (3) comprises a water inlet pipe (31) arranged on the workbench (2), a communication groove (32) arranged on the workbench (2) and a cooling pipe (33) arranged on the left mold (22) and the right mold (23), the water inlet pipe (31) is communicated with the communication groove (32), and a water flow switch (33) is arranged between the cooling assembly and the cooling pipe.

2. A blow molding apparatus according to claim 1, wherein the water flow switch comprises a switch groove (34), a switch plate (35) slidably arranged in the switch groove (34), and a switch spring (36) arranged in the switch groove (34), wherein the switch plate (35) is provided with a communication hole (37), the communication hole (37) is arranged between the communication groove (32) and the cooling pipe (33) or between the communication groove (32) and the cooling pipe (33), one end of the switch plate (35) is also fixed with a linkage plate (38), and the linkage plate (38) is arranged on the moving path of the left mold (22) and the right mold (23).

3. A blowing device according to claim 1, wherein the cooling pipe (33) is connected to a water outlet pipe (39) at the end remote from the water inlet pipe (31), the water inlet pipe (31) being connected to a water source, the water outlet pipe (39) being likewise connected to the water source.

4. A blow molding device according to claim 1, wherein a cavity is formed in the feeding table (12), an extrusion plate (121) is slidably arranged in the cavity, the cavity is divided into a pressure cavity (122) and a filling cavity (123) by the extrusion plate (121), an extrusion spring (124) for pushing the extrusion plate (121) to move downwards is arranged in the pressure cavity (122), the raw material box (11) is provided with a feeding channel (111), the feeding channel (111) is communicated with the filling cavity (123), a discharge hole (125) is formed in the bottom of the filling cavity (123), a feed inlet (126) is formed in the workbench (2), the feed inlet (126) is located right below the discharge hole (125), the feeding rod (13) is located at the feed inlet (126) and blocks the discharge hole (125), and a discharge assembly (4) capable of pushing the feeding rod (13) and opening the feed inlet (126) is arranged on the workbench (2).

5. A blow molding apparatus according to claim 4, wherein the discharging unit (4) comprises a lifting rod (41), an abutting portion (42) provided on the lifting rod (41), the abutting portion (42) is located under the feeding rod (13), the lifting rod (41) is slidably connected with the workbench (2), the lifting rod (41) is provided with a rack groove (43), and the workbench (2) is fixedly provided with a motor, and a gear (44) meshed with the rack groove (43) is provided at an output end of the motor.

6. A blowing device according to claim 5, characterized in that the feeding table (12) is further provided with a blowing assembly (5), the blowing assembly (5) comprises a blowing pump (51) and a blowing pipe (52) connected with the blowing pump (51), the blowing pipe (52) is connected with the feeding rod (13), and a blowing hole (53) communicated with the blowing pipe (52) is formed in the feeding rod (13).

7. A blow molding apparatus according to claim 1, wherein the table (2) is further provided with a cutting assembly (6), the cutting assembly (6) comprises a chute (61) formed in the table (2), a slider (62) symmetrically formed in the chute (61), an arc surface (63) formed on the slider (62), a slot (64) formed in the slider (62), a cutter (65) slidably formed in the slot (64), and a cutting spring (66) formed in the slot (64) for holding the cutter (65) in thrust, the cutter (65) is allowed to enter the slot (64), and the arc surface (63) is allowed to clamp the feed rod (13).