CN219214074U

CN219214074U - Plastic uptake upper die, plastic uptake assembly and plastic uptake machine

Info

Publication number: CN219214074U
Application number: CN202320224389.2U
Authority: CN
Inventors: 丁阳
Original assignee: Sichuan Fuzexin Packaging And Printing Co ltd
Current assignee: Sichuan Fuzexin Packaging And Printing Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-20
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a plastic uptake upper die, a plastic uptake assembly and a plastic uptake machine, wherein the plastic uptake upper die comprises a die body, a cavity is arranged on the lower surface of the die body, and an air suction hole extending to the outer wall of the die body is arranged on the inner wall of the cavity; the inside air cavity that is provided with of die body, the air cavity sets up around the die cavity, and the air cavity passes through a plurality of evenly distributed's air vent intercommunication die cavity, the inner wall of air cavity is provided with the gas blowing hole that extends to the die body outer wall. The plastic uptake assembly adopts the plastic uptake upper die. The plastic sucking machine adopts the plastic sucking component or the plastic sucking upper die. According to the utility model, the plurality of vent holes which are uniformly distributed are arranged, so that the demoulding force generated by air flow uniformly acts on a plurality of parts of the plastic product during demoulding, so that the stress of the plastic product is balanced, the deformation risk is reduced, and the demoulding effect is improved.

Description

Plastic uptake upper die, plastic uptake assembly and plastic uptake machine

Technical Field

The utility model belongs to the field of plastic sucking equipment, and particularly relates to a plastic sucking upper die, a plastic sucking assembly and a plastic sucking machine.

Background

The plastic sucking machine is one common plastic product producing apparatus, and vacuum sucking mode is used to suck heated and softened plastic into mold to make the plastic adhere to the inner wall of the mold to form the mold. The existing plastic sucking machine comprises a conveying mechanism, a heating mechanism, a mold and an air supply system, wherein the conveying mechanism sequentially conveys plastic films to the heating mechanism and the mold, the plastic films are softened after being heated by the heating mechanism, the air supply system firstly provides suction force, the softened plastic films are sucked into the mold, and then air is blown into the mold, so that demolding is realized.

The traditional mould is generally provided with one to two air holes, so that the plastic product is stressed unevenly during demoulding, is easy to deform and has the condition of demoulding failure. CN212266646U discloses a plastic suction mould, through setting up the oil filler point on last mould, pour into cooling oil into the mould in the time of the drawing of patterns, play the effect of supplementary drawing of patterns. The prior art can prevent the deformation and damage of the product during demolding, but needs to consume a lot of oil, so that the production cost is increased, in addition, the oil can pollute the plastic product, the plastic product must be cleaned after demolding, the production cost is further increased, and the production efficiency is reduced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a plastic uptake upper die, a plastic uptake assembly and a plastic uptake machine, which can prevent products from deforming during demoulding, ensure demoulding effect and not increase production cost.

In order to solve the problems, the utility model adopts the following technical scheme: the upper plastic uptake mould comprises a mould body, wherein a cavity is formed in the lower surface of the mould body, and an air suction hole extending to the outer wall of the mould body is formed in the inner wall of the cavity; the inside air cavity that is provided with of die body, the air cavity sets up around the die cavity, and the air cavity passes through a plurality of evenly distributed's air vent intercommunication die cavity, the inner wall of air cavity is provided with the gas blowing hole that extends to the die body outer wall.

Further, the die body comprises a die core and a die cover, the die cover comprises a top plate and four side plates, the die cavity is arranged on the lower surface of the die core, the edge of the die core is connected with the lower end of the side plate of the die cover through a connecting plate, and the air cavity is arranged between the die core and the die cover.

Further, the inner wall of die cavity is provided with a plurality of recesses, be provided with a plurality of supports in the air cavity, every the recess is coaxial with a air vent, be provided with the baffle in the recess, the baffle is connected with the movable rod, the external diameter of movable rod is less than the diameter of air vent, just the movable rod runs through the air vent and with support sliding fit, be provided with the spring that is in the extension state between support and the baffle.

Further, a limiting sleeve is arranged at one end of the movable rod, which is positioned in the air cavity.

Further, the support is arranged on the mold core.

The plastic sucking assembly comprises a plastic sucking upper die and a plastic sucking lower die, wherein the plastic sucking upper die is arranged on an upper die holder, the plastic sucking lower die is arranged on a lower die holder, a lower die cavity is arranged on the upper surface of the plastic sucking lower die, and the plastic sucking upper die is connected with a lifting mechanism; by adopting the plastic uptake upper die, the air suction hole and the air blowing hole are both connected with an air pump.

Further, a vertical guide post is arranged on the lower die holder, the guide post penetrates through the upper die holder and is in sliding fit with the upper die holder, and a buffer spring is arranged between the upper die holder and the lower die holder.

Further, the lifting mechanism is a hydraulic cylinder.

The plastic sucking machine comprises the plastic sucking upper die.

The plastic sucking machine comprises the plastic sucking component.

The beneficial effects of the utility model are as follows: when the plastic mold is in operation, air in the cavity is sucked out through the air suction holes, negative pressure is generated in the cavity, softened plastic is sucked into the inner wall of the cavity, a plastic product is molded, then air suction is stopped, air is blown into the air cavity through the air blowing holes, after the air enters the air cavity, the air enters the cavity through the air holes, and the plastic product attached to the inner wall of the cavity is blown off, so that demolding is realized. According to the utility model, the plurality of vent holes which are uniformly distributed are arranged, so that the demoulding force generated by air flow uniformly acts on a plurality of parts of the plastic product during demoulding, so that the stress of the plastic product is balanced, the deformation risk is reduced, and the demoulding effect is improved.

Drawings

FIG. 1 is a schematic view of a plastic uptake upper mold of the present utility model;

FIG. 2 is a schematic view of a suction molding assembly of the present utility model;

reference numerals: 1-a die body; 11-a cavity; 12-an air suction hole; 13-air cavity; 14-vent holes; 15-a blow hole; 16-a mold core; 17, a mold cover; 18-connecting plates; 19-a baffle; 110-a movable rod; 111-a bracket; 112-a spring; 113-a limit sleeve; 2-sucking plastic lower die; 21-an upper die holder; 22-a lower die holder; 23-a lower cavity; 24-lifting mechanism; 25-an air pump; 26-a guide post; 27-a buffer spring.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

The upper plastic uptake mold disclosed by the utility model, as shown in fig. 1, comprises a mold body 1, wherein a cavity 11 is arranged on the lower surface of the mold body 1, and an air suction hole 12 extending to the outer wall of the mold body 1 is arranged on the inner wall of the cavity 11; the inside of the die body 1 is provided with an air cavity 13, the air cavity 13 is arranged around the die cavity 11, the air cavity 13 is communicated with the die cavity 11 through a plurality of evenly distributed vent holes 14, and the inner wall of the air cavity 13 is provided with a blow hole 15 extending to the outer wall of the die body 1.

The die body 1 is a main body of the upper plastic sucking die, the inner wall of the die cavity 11 is used for forming a plastic product, the shape of the die cavity 11 is determined according to the design shape of the processed plastic product, and the die body can be hemispherical, cuboid, truncated cone or cylindrical and other shapes. The suction hole 12 is used for connecting a suction device and the cavity 11, and the suction device can suck air in the cavity 11 through the suction hole 12, so that negative pressure is generated in the cavity 11 to adsorb plastic raw materials. The suction opening 12 may in particular be provided in a suction line which extends through the mould body 1.

The air blowing holes 15 are used for blowing air into the air cavity 13, the air cavity 13 plays a role in centralizing and dispersing the air to be conveyed to each air vent 14, the shape of the bottom wall of the air cavity 13 is similar to the shape of the inner wall of the cavity 11, the distribution area of the plurality of air vents 14 is ensured to be as large as possible, and therefore the air intake uniformity is improved.

The working process of the upper plastic uptake die is as follows: during plastic suction, the air blowing hole 15 is kept closed, so that external air is prevented from entering the air cavity 13 through the air blowing hole 15 and then entering the cavity 11 through the air vent 14, and negative pressure cannot be formed in the cavity 11. Then, air in the cavity 11 is sucked out by the suction hole 12, negative pressure is generated in the cavity 11, and the heated and softened plastic raw material is sucked into the cavity 11 and attached to the inner wall of the cavity 11, so that the plastic product is formed. Then, the air is blown into the air cavity 13 through the air blowing holes 15, the air in the air cavity 13 flows to the cavity 11 through the air holes 14, and the flowing of the air generates thrust to the plastic product, so that the plastic product is separated from the cavity 11, and the demolding is realized. Because the number of the vent holes 14 is multiple, the plastic products are stressed at multiple points during demolding, the stress is relatively dispersed, the acting force applied to a single stress point is small, and the plastic products can be effectively prevented from deforming during demolding.

The die body 1 comprises a die core 16 and a die cover 17, the die cover 17 comprises a top plate and four side plates, a die cavity 11 is arranged on the lower surface of the die core 16, the edge of the die core 16 is connected with the lower ends of the side plates of the die cover 17 through a connecting plate 18, and the air cavity 13 is arranged between the die core 16 and the die cover 17.

The top plate and the four side plates enclose a cavity, the die cover 17 is a cuboid box with an open lower end, the die core 16 is positioned inside the die cover 17, and the lower end face of the die core 16, the lower surface of the connecting plate 18 and the lower end face of the die cover 17 are flush. The connecting plate 18 can be integrally formed with the mold core 16, the connecting plate 18 and the mold cover 17 can be connected through bolts, sealing performance is guaranteed through sealing gaskets, and the connecting plate 18 can be welded and connected with side plates of the mold cover 17. The die body 1 of the utility model has a regular cuboid shape, can be stacked in order and is convenient for storage. When the connecting plate 18 is connected with the die cover 17 through bolts, the die cores 16 with different cavities 11 can be replaced, so that the production of various plastic products is realized, and the universality is better.

When the inner wall of the cavity 11 is provided with the orifices of the plurality of vent holes 14, in the forming process of the plastic product, as the plastic is heated and softened firstly, the orifices of the vent holes 14 can form circular marks on the outer wall of the plastic product to influence the appearance of the plastic product, in order to solve the problem, the inner wall of the cavity 11 is provided with a plurality of grooves which are circular grooves, the diameter of the grooves is larger than that of the vent holes 14, a plurality of brackets 111 are arranged in the air cavity 13, the brackets 111 can be portal brackets, each groove is coaxial with one vent hole 14, the grooves correspond to the vent holes 14 one by one, the same in number, the baffle plates 19 are arranged in the grooves, the diameter of the baffle plates 19 is matched with the diameter of the grooves, and the thickness of the baffle plates is equal to the depth of the grooves, so that the baffle plates 19 just fill the grooves, and the side walls of the baffle plates 19 and the inner wall of the cavity 11 are in smooth transition. The baffle 19 is connected with a movable rod 110, the outer diameter of the movable rod 110 is smaller than the diameter of the vent hole 14, the movable rod 110 penetrates through the vent hole 14 and is in sliding fit with the support 111, and a spring 112 in an extension state is arranged between the support 111 and the baffle 19. One end of the spring 112 is fixedly connected with the bracket 111, the other end of the spring 112 is fixedly connected with the baffle 19, the spring 112 is always in an extension state, tension is generated, the baffle 19 can be tightly adhered to the bottom wall of the groove and kept fixed under the action of the tension, and during plastic suction, the baffle 19 fills the orifice of the vent hole 14, so that circular marks caused by the orifice of the vent hole 14 on the outer wall of a plastic product can be avoided, and the production quality is ensured. When the plastic product is demolded, air in the air cavity 13 enters the vent hole 14, the baffle plate 19 is pushed to move towards the cavity 11 under the action of air pressure, the orifice of the vent hole 14 is opened, the air enters the cavity 11, the air and the baffle plate 19 jointly push the plastic product to be demolded, and the spring 112 is further lengthened. After stopping blowing, the spring 112 pulls the shutter 19 to return. The spring 112 also serves as a buffer during demolding, further preventing deformation of the plastic product.

In order to limit the movable range of the movable rod 110, one end of the movable rod 110 located in the air cavity 13 is provided with a limit sleeve 113. The stop collar 113 may be a nut that is threadably coupled to the movable rod 110.

The support 111 is provided on the mold core 16, and when the upper mold for plastic suction is processed, the mold core 16 and the mold cover 17 are processed respectively, and then the mold core 16 and the mold cover 17 are assembled.

The plastic sucking assembly is shown in fig. 2, and comprises a plastic sucking upper die and a plastic sucking lower die 2, wherein the plastic sucking upper die is arranged on an upper die holder 21, the plastic sucking lower die 2 is arranged on a lower die holder 22, a lower die cavity 23 is arranged on the upper surface of the plastic sucking lower die 2, and the plastic sucking upper die is connected with a lifting mechanism 24; the upper plastic suction mould shown in fig. 1 is adopted, and the air suction hole 12 and the air blowing hole 15 are connected with an air pump 25.

The upper die holder 21 and the lower die holder 22 are both horizontally arranged, the upper plastic sucking die and the lower plastic sucking die 2 are matched, the plastic raw material is compressed, and during plastic sucking, the plastic raw material positioned between the lower die cavity 23 and the die cavity 11 is sucked into the upper plastic sucking die. The air suction hole 12 and the air blowing hole 15 are respectively connected with an air pump 25. The lifting mechanism 24 is used for driving the upper plastic suction die to lift, and a hydraulic cylinder or an air cylinder and the like can be adopted.

In order to ensure stable lifting of the upper plastic suction die, the lower die holder 22 is fixedly mounted on the frame, a vertical guide post 26 is arranged on the lower die holder 22, the guide post 26 penetrates through the upper die holder 21 and is in sliding fit with the upper die holder 21, and a buffer spring 27 is arranged between the upper die holder 21 and the lower die holder 22. The guide posts 26 play a guiding role to ensure that the upper die holder 21 and the upper plastic suction die move vertically, and the upper plastic suction die can be aligned with the lower plastic suction die 2. The buffer spring 27 plays a role in buffering, and avoids the large instant impact force caused by the upper plastic sucking die on the lower plastic sucking die 2.

The working process of the plastic sucking component is as follows: when the softened plastic raw material is conveyed between the upper plastic sucking die and the lower plastic sucking die 2, the plastic raw material stops moving, the lifting mechanism 24 pushes the upper plastic sucking die to move downwards, the plastic raw material is pressed on the lower plastic sucking die 2, then the air pump 25 sucks air through the air suction hole 12, after plastic sucking is completed, the lifting mechanism 24 drives the upper plastic sucking die to move upwards, the other air pump 25 blows air to the air blowing hole 15, demoulding is completed, and a demoulded plastic product falls on the lower plastic sucking die 2 and is conveyed out of the equipment by the conveying mechanism.

The utility model relates to a plastic sucking machine, which comprises a plastic sucking upper die shown in figure 1 or a plastic sucking assembly shown in figure 2. The other parts such as the transmission mechanism, the heating mechanism and the like are all made by adopting any one of the prior art.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The upper plastic uptake mold comprises a mold body (1), wherein a cavity (11) is formed in the lower surface of the mold body (1), and an air suction hole (12) extending to the outer wall of the mold body (1) is formed in the inner wall of the cavity (11); the method is characterized in that: the die body (1) is internally provided with an air cavity (13), the air cavity (13) is arranged around the die cavity (11), the air cavity (13) is communicated with the die cavity (11) through a plurality of uniformly distributed vent holes (14), and the inner wall of the air cavity (13) is provided with a blowing hole (15) extending to the outer wall of the die body (1).

2. The upper blister mold of claim 1, wherein: the die body (1) comprises a die core (16) and a die cover (17), the die cover (17) comprises a top plate and four side plates, the die cavity (11) is arranged on the lower surface of the die core (16), the edge of the die core (16) is connected with the lower end of the side plate of the die cover (17) through a connecting plate (18), and the air cavity (13) is arranged between the die core (16) and the die cover (17).

3. The upper blister mold of claim 2, wherein: the inner wall of die cavity (11) is provided with a plurality of recesses, be provided with a plurality of supports (111) in air cavity (13), every recess is coaxial with a air vent (14), be provided with baffle (19) in the recess, baffle (19) are connected with movable rod (110), the external diameter of movable rod (110) is less than the diameter of air vent (14), just movable rod (110) runs through air vent (14) and with support (111) sliding fit, be provided with between support (111) and baffle (19) and be in spring (112) of extension state.

4. A suction upper die as claimed in claim 3, wherein: one end of the movable rod (110) positioned in the air cavity (13) is provided with a limit sleeve (113).

5. A suction upper die as claimed in claim 3, wherein: the support (111) is arranged on the mould core (16).

6. The plastic sucking assembly comprises a plastic sucking upper die and a plastic sucking lower die (2), wherein the plastic sucking upper die is arranged on an upper die holder (21), the plastic sucking lower die (2) is arranged on a lower die holder (22), a lower die cavity (23) is formed in the upper surface of the plastic sucking lower die (2), and the plastic sucking upper die is connected with a lifting mechanism (24); the method is characterized in that: the upper plastic suction die is characterized in that the upper plastic suction die disclosed in claim 1, 2, 3, 4 or 5 is adopted, and the air suction hole (12) and the air blowing hole (15) are connected with an air pump (25).

7. A blister assembly as claimed in claim 6, wherein: the upper die holder (21) is characterized in that a vertical guide post (26) is arranged on the lower die holder (22), the guide post (26) penetrates through the upper die holder (21) and is in sliding fit with the upper die holder (21), and a buffer spring (27) is arranged between the upper die holder (21) and the lower die holder (22).

8. A blister assembly as claimed in claim 6, wherein: the lifting mechanism (24) is a hydraulic cylinder.

9. The plastic uptake machine, its characterized in that: comprising the upper blister mold of claim 1, 2, 3, 4 or 5.

10. The plastic uptake machine, its characterized in that: a blister assembly comprising the device of claim 6, 7 or 8.