CN115157544A

CN115157544A - Injection molding process of plastic product

Info

Publication number: CN115157544A
Application number: CN202210797211.7A
Authority: CN
Inventors: 李建光
Original assignee: Wuxi Menglite Technology Co ltd
Current assignee: Wuxi Menglite Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-10-11

Abstract

The invention provides an injection molding process of a plastic product, which is formed by using a forming device, wherein the forming device comprises a supporting platform, a fixed support is arranged above the supporting platform, a hot melting device is fixed on the fixed support, a conveying device for outputting the plastic product is arranged on the supporting platform, the fixed support is provided with a plurality of forming dies in a sliding manner, a conveying device is arranged on the fixed support in a sliding manner, and the conveying device is used for controlling the forming dies to slide between the hot melting device and the conveying device. The forming device controls the forming die to move to the position below the hot melting device through the conveying device, plastic melt is injected into the forming die through the hot melting device, the conveying device moves the plastic melt loaded on the forming die to one side of the conveying device, the plastic melt is cooled and plasticized to form a plastic product in the moving process, meanwhile, the hot melting device continuously injects the plastic melt into the forming die below the hot melting device, and the forming device can realize the continuous operation of the hot melting device.

Description

Injection molding process for plastic product

Technical Field

The invention relates to an injection molding process, in particular to an injection molding process of a plastic product.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting.

The traditional injection molding method is to directly inject plastic melt into a molding die through a hot melting device for cooling molding, and then to demold the molding die, however, the hot melting device needs to stop running in the cooling and demolding process, and can continue to be used after the demolding is finished.

Disclosure of Invention

The invention aims to provide an injection molding process of a plastic product, wherein a conveying device is used for controlling a molding die to move to the position below a hot melting device, a plastic melt is injected into the molding die through the hot melting device, the conveying device is used for moving the plastic melt loaded on the molding die to one side of a conveying device, the plastic melt is cooled and plasticized to form a plastic product in the moving process, meanwhile, the hot melting device continuously injects the plastic melt into the molding die below the hot melting device, the molding device can realize the continuous operation of the hot melting device, the production efficiency is improved, when the molding die moves to be close to the conveying device, a first gear is meshed with a rack to enable a die body to rotate 180 degrees, and the molding die is turned to be open downwards to realize the demolding, and the molding device has high automation degree and is convenient to control.

The purpose of the invention can be realized by the following technical scheme:

a plastic product injection molding process, a plastic product injection molding process, the molding process includes the following steps:

s1: production of plastic melt

The added plastic is hot-melted by a hot melting device to form a plastic melt, the heating temperature is 180-220 ℃, the stirring is carried out during the heating process, and the stirring speed is 250-300r/min.

S2: plastic molding

And injecting the plastic melt into a forming die, and cooling the plastic melt after injection to form the plastic, wherein the cooling time is 4-6min.

S3: demoulding of plastics

And (5) reversing the forming die in the step (S2), and demolding to obtain the plastic product.

The forming process uses a forming device for forming, the forming device comprises a supporting platform, a fixing support is arranged above the supporting platform, a hot melting device is fixed on the fixing support, a conveying device for outputting plastic products is arranged on the supporting platform, and a plurality of forming dies are arranged on the fixing support in a sliding mode.

The device comprises a fixed support and is characterized in that a conveying device is arranged on the fixed support in a sliding mode, the conveying device is used for controlling the forming die to slide between a hot melting device and a conveying device, a driving device used for driving the conveying device to slide is fixed on the fixed support, the conveying device is located below the forming die, and the hot melting device is located above the forming die.

Further, the fixed bolster includes the first curb plate of symmetric distribution and the second curb plate of symmetric distribution, and first curb plate and second curb plate are all fixed and are fixed on first curb plate at the hot melt device, and the hot melt device is fixed between first curb plate, and conveyer is located between the second curb plate, is connected with the third curb plate between first curb plate and the second curb plate.

The third side plate is provided with rectangular sliding rails distributed in an array mode, the rectangular sliding rails penetrate through the third side plate, racks distributed in an array mode are fixed on the third side plate, and the rectangular sliding rails of the rectangular sliding rails are located close to the second side plate.

Furthermore, the forming die comprises an I-shaped sliding block which is positioned in the rectangular sliding rail and slides, a rotating shaft is arranged on the I-shaped sliding block in a rotating mode, a die body is fixedly connected between the rotating shafts, and a first gear is fixed to one end, far away from the die body, of the rotating shaft, through the I-shaped sliding block.

Furthermore, the side wall of the rotating shaft is provided with a tangent plane, the tangent plane is located at a position close to the first gear, one side of the third side plate is connected with vertical baffles distributed in an array mode, the vertical baffles are located at one ends, far away from the second side plate, of the racks, when the I-shaped sliding block slides at a position close to the second side plate, the first gear is meshed with the racks to achieve rotation of the mold body, and when the first gear is separated from the racks, the tangent plane is in contact with the vertical baffles to limit rotation of the rotating shaft.

Furthermore, the I-shaped sliding block is connected with a U-shaped block, and an opening of the U-shaped block faces to the side far away from the third side plate.

Furthermore, the conveying device comprises sliding blocks which are symmetrically distributed, the sliding blocks are located above the third side plate and slide, a connecting rod is connected between the sliding blocks, a connecting plate is arranged on one side of each sliding block, an air cylinder is fixed above the connecting plate, a clamping block is fixed to an output shaft of the air cylinder through the connecting plate, and the clamping blocks are clamped on the corresponding U-shaped blocks through telescopic air cylinders.

The invention has the beneficial effects that:

1. according to the forming process, the conveying device controls the forming die to move to the position below the hot melting device, the molten plastic is injected into the forming die through the hot melting device, the molten plastic loaded with the molten plastic moves to one side of the conveying device through the conveying device, the molten plastic is cooled and plasticized to form a plastic product in the moving process, meanwhile, the hot melting device continuously injects the molten plastic into the forming die below the hot melting device, the forming device can realize continuous operation of the hot melting device, and the production efficiency is improved;

2. when the mold of the forming device moves to be close to the conveying device, the first gear is meshed with the rack, so that the mold body rotates by 180 degrees, the forming mold is turned to be open downwards, demolding is realized, and the forming device is high in automation degree and convenient to control.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a molding apparatus according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a molding apparatus according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic view of the structure of the molding apparatus of the present invention;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

in the figure: 1. a support platform; 2. a fixed bracket; 3. a hot melting device; 4. forming a mold; 5. a conveying device; 6. a conveying device; 7. a drive device; 21. a first side plate; 22. a second side plate; 23. a third side plate; 24. a rectangular slide rail; 25. a rack; 26. a vertical baffle; 41. an I-shaped slide block; 42. a rotating shaft; 43. a mold body; 44. a limiting sheet; 45. cutting into noodles; 46. a first gear; 47. a U-shaped block; 61. a slider; 62. a connecting rod; 63. a connecting plate; 64. a cylinder; 65. a clamping block; 71. a motor; 72. and a screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

An injection molding process for a plastic product, the molding process comprising the steps of:

s1: production of plastic melt

The added plastic is melted by the hot melting device 3 to form a plastic melt, the heating temperature is 200 degrees, the stirring is carried out in the heating process, and the stirring speed is 300r/min.

S2: plastic molding

And injecting the plastic melt into a forming die, and cooling the plastic melt after injection to form the plastic, wherein the cooling time is 5min.

S3: demoulding of plastics

And (3) reversing the forming die in the step (S2), and demolding to obtain the plastic product.

The forming process uses a forming device for forming, the forming device comprises a supporting platform 1, as shown in fig. 1, a fixing support 2 is arranged above the supporting platform 1, a hot melting device 3 is fixed on the fixing support 2, a conveying device 5 for outputting plastic products is arranged on the supporting platform 1, and a plurality of forming molds 4 are arranged on the fixing support 2 in a sliding mode.

The fixed support 2 is provided with a conveying device 6 in a sliding mode, the conveying device 6 is used for controlling the forming mold 4 to slide between the hot melting device 3 and the conveying device 5, a driving device 7 used for driving the conveying device 6 to slide is fixed on the fixed support 2, the conveying device 5 is located below the forming mold 4, and the hot melting device 3 is located above the forming mold 4.

The fixing bracket 2 includes a first side plate 21 and a second side plate 22, which are symmetrically distributed, as shown in fig. 2, the first side plate 21 and the second side plate 22 are both fixed on the hot melting device 3 and fixed on the first side plate 21, the hot melting device 3 is fixed between the first side plates 21, the conveying device 5 is located between the second side plates 22, and a third side plate 23 is connected between the first side plate 21 and the second side plate 22.

The third side plate 23 is provided with rectangular slide rails 24 distributed in an array manner, the rectangular slide rails 24 penetrate through the third side plate 23, racks 25 distributed in an array manner are fixed on the third side plate 23, the rectangular slide rails 24 of the rectangular slide rails 24 are located at positions close to the second side plate 22, one side of the third side plate 23 is connected with vertical baffles 26 distributed in an array manner, and the vertical baffles 26 are located at one ends, far away from the second side plate 22, of the racks 25.

The forming mold 4 includes a i-shaped sliding block 41 sliding in the rectangular sliding rail 24, as shown in fig. 3 and 4, a rotating shaft 42 is rotatably disposed on the i-shaped sliding block 41, a mold body 43 is fixedly connected between the rotating shafts 42, a first gear 46 is fixed on one end of the rotating shaft 42 far away from the mold body 43 through the i-shaped sliding block 41, a limiting piece 44 is disposed on the rotating shaft 42, a tangent plane 45 is disposed on a side wall of the rotating shaft 42, and the tangent plane 45 is located at a position close to the first gear 46.

When the drum block 41 slides near the second side plate 22, the first gear 46 engages with the rack 25 to rotate the mold body 43, and when the first gear 46 disengages from the rack 25, the section 45 contacts with the vertical baffle 26 to restrict the rotation of the rotating shaft 42.

A U-shaped block 47 is attached to the i-shaped slider 41, and the opening of the U-shaped block 47 faces away from the third side plate 23.

The conveying device 6 includes sliding blocks 61 symmetrically distributed, as shown in fig. 5 and 6, the sliding blocks 61 slide above the third side plate 23, a connecting rod 62 is connected between the sliding blocks 61, a connecting plate 63 is provided on one side of the sliding blocks 61, an air cylinder 64 is fixed above the connecting plate 63, an engaging block 65 is fixed on an output shaft of the air cylinder 64 through the connecting plate 63, and the engaging block 65 is engaged with the corresponding U-shaped block 47 through a telescopic air cylinder 64.

The driving device 7 may be an air cylinder, and may also include a motor 71 fixed on the fixing bracket 2, and a screw 72 in threaded engagement with the sliding block 61 is fixed on an output shaft of the motor 71.

During the use, through the below that conveyor 6 control forming die 4 removed to hot melting device 3, pour into the plastic melt into forming die 4 through hot melting device 3, will carry the plastic melt through conveyor 6 and remove to conveyer 5 one side, the in-process of removal realizes making its plastify to the cooling of plastic melt and forms plastic products, hot melting device 3 lasts to the forming die 4 injection plastic melt of its below simultaneously, this forming device can realize the continuous operation of hot melting device 3, and the production efficiency is improved, when forming die 4 removes to being close to conveyer 5, first gear 46 makes mould body 43 rotatory 180 with the meshing of rack 25, forming die 4 truns into the opening downwards, realizes the drawing of patterns, this forming device degree of automation is high, and convenient control.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. A plastic product injection molding process is characterized by comprising the following steps:

s1: production of plastic melt

The added plastic is hot-melted by a hot melting device to form a plastic melt, the heating temperature is 180-220 ℃, stirring is carried out in the heating process, and the stirring speed is 250-300r/min;

s2: plastic molding

Injecting the plastic melt into a forming die, and cooling the plastic melt after injection to form the plastic, wherein the cooling time is 4-6min;

s3: demoulding of plastics

Reversing the forming die in the step S2, and demolding to generate a plastic product;

the forming process is formed by using a forming device, the forming device comprises a supporting platform (1), a fixed support (2) is arranged above the supporting platform (1), a hot melting device (3) is fixed on the fixed support (2), a conveying device (5) for outputting plastic products is arranged on the supporting platform (1), and a plurality of forming dies (4) are arranged on the fixed support (2) in a sliding manner;

the hot-melt forming die is characterized in that a conveying device (6) is arranged on the fixed support (2) in a sliding mode, the conveying device (6) is used for controlling the forming die (4) to be located between the hot-melt device (3) and the conveying device (5) in a sliding mode, a driving device (7) used for driving the conveying device (6) to slide is fixed on the fixed support (2), the conveying device (5) is located below the forming die (4), and the hot-melt device (3) is located above the forming die (4).

2. The plastic product injection molding process according to claim 1, wherein the fixing bracket (2) comprises a first side plate (21) and a second side plate (22) which are symmetrically distributed, the first side plate (21) and the second side plate (22) are both fixed on the first side plate (21) through the hot melting device (3), the hot melting device (3) is fixed between the first side plates (21), the conveying device (5) is located between the second side plates (22), and the third side plate (23) is connected between the first side plate (21) and the second side plate (22);

the rack type three-dimensional display screen is characterized in that rectangular sliding rails (24) distributed in an array mode are arranged on the third side plate (23), the rectangular sliding rails (24) penetrate through the third side plate (23), racks (25) distributed in an array mode are fixed on the third side plate (23), and the rectangular sliding rails (24) are located at positions close to the second side plate (22).

3. The plastic product injection molding process according to claim 2, wherein the molding die (4) comprises a drum-shaped sliding block (41) sliding in the rectangular sliding rail (24), the drum-shaped sliding block (41) is provided with a rotating shaft (42) in a rotating manner, a die body (43) is fixedly connected between the rotating shafts (42), and a first gear (46) is fixed on one end of the rotating shaft (42) far away from the die body (43) through the drum-shaped sliding block (41).

4. The plastic product injection molding process of claim 3, wherein the side wall of the rotating shaft (42) is provided with a tangent plane (45), the tangent plane (45) is located near the first gear (46), one side of the third side plate (23) is connected with the vertical baffles (26) distributed in an array, the vertical baffles (26) are located at one end of the rack (25) far away from the second side plate (22), when the I-shaped sliding block (41) slides near the second side plate (22), the first gear (46) is meshed with the rack (25) to realize the rotation of the mold body (43), and when the first gear (46) is separated from the rack (25), the tangent plane (45) is contacted with the vertical baffles (26) to limit the rotation of the rotating shaft (42).

5. A plastic product injection moulding process according to claim 4, wherein a U-shaped block (47) is attached to said drum slide (41), the opening of the U-shaped block (47) facing away from the third side panel (23).

6. The plastic product injection molding process of claim 5, wherein the conveying device (6) comprises sliding blocks (61) which are symmetrically distributed, the sliding blocks (61) slide above the third side plate (23), a connecting rod (62) is connected between the sliding blocks (61), a connecting plate (63) is arranged on one side of each sliding block (61), an air cylinder (71) is fixed above the connecting plate (63), a clamping block (65) is fixed on an output shaft of each air cylinder (71) through the connecting plate (63), and the clamping blocks (65) are clamped on the corresponding U-shaped blocks (47) through telescopic air cylinders (71).

7. A plastic product injection molding process according to claim 6, wherein the driving device (7) comprises a motor (71) fixed on the fixed bracket (2), and a screw rod (72) in threaded fit with the sliding block (61) is fixed on an output shaft of the motor (71).

8. A plastic product injection molding process according to claim 3 or 4, wherein the rotation shaft (42) is provided with a limiting piece (44).