CN217752414U

CN217752414U - Compression molding mould is moulded to long fiber heat

Info

Publication number: CN217752414U
Application number: CN202221796374.5U
Authority: CN
Inventors: 王哲君
Original assignee: Taizhou Huangyan Dacheng Mould Co ltd
Current assignee: Zhejiang Dacheng Mold Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-08
Anticipated expiration: 2032-07-11

Abstract

The utility model belongs to the technical field of combined material makes, refer in particular to a compression molding mould is moulded to long fiber heat, including the core of shaping goods upper surface and the die of shaping goods lower surface, core and die form when the compound die the die cavity still is including the feedstock channel who is used for placing the material piece, feedstock channel one end intercommunication die cavity, the other end are equipped with the thrust device who pushes the die cavity with the material piece. The utility model discloses fashioned plastic products rigidity and intensity are good, and plastic products surface finish is good.

Description

Compression molding mould is moulded to long fiber heat

The technical field is as follows:

the utility model belongs to the technical field of combined material makes, refer in particular to a compression molding mould is moulded to long fiber heat.

The background art comprises the following steps:

injection molding, also known as injection molding, is a method of molding by injection and molding. The basic principle of plastic injection molding is that the extrudability and moldability of plastic are utilized, firstly, loose granular or granular molding materials are fed into a high-temperature machine barrel from a hopper of an injection molding machine to be heated, melted and plasticized to form viscous flow state melt, then the viscous flow state melt is injected into a closed mold with lower temperature through a nozzle at the front end of the machine barrel under the high-pressure pushing of a plunger or a screw, and after a period of pressure maintaining, cooling and shaping time, the mold is opened to release plastic parts with certain shapes and sizes from the mold cavity. Because the sprue of injection molding is smaller and the injection pressure can not be very high at present, the traditional injection molding can mold a plastic product mixed with short fibers and cannot mold a plastic product mixed with long fibers, and the rigidity and the strength of the short fiber reinforced plastic product are weaker than those of the long fiber reinforced plastic product, namely the plastic product produced by the traditional plastic molding process has poor rigidity and low strength.

The existing compression molding process comprises the following steps: 1. adding the long fibers and the thermoplastic plastic particles into an extruder, and carrying out melt blending to obtain a molten long fiber reinforced thermoplastic material, wherein the long fiber reinforced thermoplastic material is extruded by the extruder; 2. cutting the long fiber-reinforced thermoplastic material extruded from the extruder into blocks according to the quality of the article; 3. putting the material block into a female die of a forming die; 4. pressing and assembling a mold core of the forming mold to form a formed product; 5. and taking out the product.

Although the existing compression molding process can be used for molding long fiber reinforced plastic products, the produced plastic products have better rigidity and strength, but because the material block is directly placed in the concave die and is pressed and molded into products through the downward pressing and mold closing of the mold core, the flowability in the molding process is small, and compared with the traditional injection molding plastic products, the surface smoothness of the existing compression molding plastic products is poorer.

The invention content is as follows:

the utility model aims at providing a compression molding mould is moulded to long fiber heat, its fashioned plastic products rigidity and intensity are good, and the plastic products surface finish is good.

The utility model discloses a realize like this:

the long fiber thermoplastic compression molding die comprises a core on the upper surface of a molded product, a female die on the lower surface of the molded product, a feeding channel for placing a material block, and a thrust device for pushing the material block into the cavity, wherein the core and the female die form the cavity when the die is closed.

In the long fiber thermoplastic molding die described above, the feed channel may be provided in the core or in the cavity.

In foretell compression molding mould is moulded to long fiber heat, the core sets up on the movable mould board, and the die sets up on the fixed die board, be equipped with the inlet pipe between die and the fixed die board, charge-in channel sets up in the inlet pipe, and inlet pipe one end runs through the die and communicates the die cavity, the other end is equipped with thrust unit.

In the long fiber thermoplastic molding die, the thrust device may have a structure that: the thrust device comprises a first oil cylinder fixed on the fixed die plate, and a piston rod of the first oil cylinder extends into the feeding channel.

In the long fiber thermoplastic molding die, the thrust device may have a structure in which: the thrust device comprises a linear motor fixed on the fixed die plate, one end of a push rod is fixed on a slide block of the linear motor, and the other end of the push rod extends into the feeding channel.

In foretell long fiber thermoplasticity compression molding mould, the cover half base is equipped with to the fixed die plate below, and the one end that the die cavity was kept away from to the inlet pipe is fixed on the fixed die plate, and hydro-cylinder one is fixed in the fixed die plate below and is located the cover half base.

In foretell long fiber thermoplasticity compression molding mould, the fixed die plate top is equipped with the push pedal in proper order and releases the fixed plate, and the push pedal is used for the push rod one end that the goods were released with the centre gripping of releasing the fixed plate, and the other end of push rod is established on the die in a sliding manner, the fixed die plate below is fixed with the hydro-cylinder two that is located the cover half base, and the piston rod of hydro-cylinder two passes the fixed die plate and connects the push pedal.

In the long fiber thermoplastic compression molding die, a sealing plug which is in sliding seal with the inner wall surface of the feeding pipe is fixed at the outer end of a piston rod of the first oil cylinder.

In the long fiber thermoplastic compression molding die, the outer end of the piston rod of the first oil cylinder protrudes outwards to form a boss, the boss is sleeved with a connecting block and is fixed with the connecting block through a pin shaft, and the outer end of the connecting block is fixedly connected with the sealing plug through a screw.

In foretell long fiber thermoplastic molding mould, the connecting block outwards protrusion has spacing arch, is equipped with the spacing recess with spacing arch looks adaptation on the connecting block, and the screw runs through behind the sealing plug with the connecting block spiro union.

In the long fiber thermoplastic compression molding die, the supporting plates positioned at two sides of the feeding pipe are arranged between the fixed die plate and the female die.

In the above long fiber thermoplastic molding die, the diameter of the feed passage is 140mm to 160mm.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model is suitable for molding long fiber reinforced plastic products, and the molded plastic products have good rigidity and strength; meanwhile, as the material block is pushed into the cavity of the forming die from the feeding channel and is fully distributed in the whole cavity by the thrust, the flowability is high in the forming process, and the surface finish of the plastic product is good;

2. one end of the feeding pipe of the utility model penetrates through the female die and is communicated with the cavity, and the other end is provided with a thrust device which pushes the material block into the cavity, so that the material is convenient to discharge, and the material block is not easy to fall out;

3. the utility model discloses the piston rod outer end of hydro-cylinder one is fixed with the sealing plug with inlet pipe internal face sliding seal, prevents effectively that the material piece from spilling from the piston rod of hydro-cylinder one and the clearance between feedstock channel one.

Description of the drawings:

fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of the first oil cylinder, the connecting block and the sealing plug of the present invention;

fig. 4 is an explosion diagram of the first oil cylinder, the connecting block and the sealing plug of the utility model.

Reference numerals: 1. a core; 2. a female die; 3. a cavity; 4. a feed channel; 5. moving the template; 6. fixing a template; 7. a feeding pipe; 8. a first oil cylinder; 9. a fixed die base; 10. pushing the plate; 11. pushing out the fixed plate; 12. a push rod; 13. a second oil cylinder; 14. a sealing plug; 15. a boss; 16. connecting blocks; 17. a screw; 18. a limiting bulge; 19. a limiting groove; 20. and a support plate.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, and with reference to figures 1 to 4:

the long fiber thermoplastic compression molding die comprises a core 1 on the upper surface of a molded product and a female die 2 on the lower surface of the molded product, wherein the core 1 and the female die 2 form a cavity 3 during die assembly, the die further comprises a feeding channel 4 for placing a material block, one end of the feeding channel 4 is communicated with the cavity 3, and the other end of the feeding channel is provided with a thrust device for pushing the material block into the cavity 3.

The utility model discloses a theory of operation: as shown in fig. 1 to 4, the long fiber reinforced thermoplastic material extruded from the extruder is cut into blocks according to the quality of the product, then the forming mold is opened, the blocks are put into the feeding passage 4, then the forming mold is closed, the blocks are pushed into the cavity 3 by the pushing device, after the cavity 3 is filled with the blocks, the forming mold is opened, and the product is taken out.

The feeding channel 4 of the utility model is large, the thrust is controlled by the thrust device, the device is suitable for molding long fiber reinforced plastic products, and the rigidity and the strength of the molded plastic products are good; meanwhile, as the material block is pushed into the cavity 3 of the forming die from the feeding channel 4 and is fully distributed in the whole cavity 3 through the pushing force, the fluidity is high in the forming process, and the surface finish degree of the plastic product is good.

The position of the feed channel 4: as shown in fig. 1, the feed channel 4 may be provided in the core 1 or in the matrix 2. In this embodiment, the feed channel 4 is arranged in the female die 2.

Specific structure of the feed channel 4: core 1 sets up on movable mould board 5, and die 2 sets up on fixed die plate 6, be equipped with inlet pipe 7 between die 2 and the fixed die plate 6, feedstock channel 4 sets up in inlet pipe 7, and inlet pipe 7 one end runs through die 2 and communicates die cavity 3, the other end is equipped with thrust unit. The feeding channel 4 is arranged between the fixed die plate 6 and the female die 2, and after the movable die plate 5 is moved to drive the die core 1 to open the die, a material block can be placed into the feeding channel 4, so that the material is convenient to discharge, and the material block is not easy to fall out when the forming die is not closed.

The specific structure of the thrust device is as follows: the thrust device comprises a first oil cylinder 8 fixed on the fixed die plate 6, and a piston rod of the first oil cylinder 8 extends into the feeding channel 4. And the first oil cylinder 8 is used as a thrust device, so that the thrust is high.

Setting position of a first oil cylinder 8: as shown in figure 1, a fixed die base 9 is arranged below the fixed die plate 6, one end, far away from the cavity 3, of the feeding pipe 7 is fixed on the fixed die plate 6, and the first oil cylinder 8 is fixed below the fixed die plate 6 and located in the fixed die base 9, so that space is effectively saved.

In order to push out a product conveniently, as shown in fig. 1 and 2, a push plate 10 and a push-out fixing plate 11 are sequentially arranged above the fixed die plate 6, the push plate 10 and the push-out fixing plate 11 clamp one end of a push rod 12 used for pushing out the product, the other end of the push rod 12 is slidably arranged on the female die 2, a second oil cylinder 13 located in the fixed die base 9 is fixed below the fixed die plate 6, and a piston rod of the second oil cylinder 13 penetrates through the fixed die plate 6 and is connected with the push plate 10.

In order to prevent the material block from leaking out of the gap between the piston rod of the oil cylinder I8 and the feeding channel I1, as shown in figures 1 and 3, a sealing plug 14 which is in sliding seal with the inner wall surface of the feeding pipe 7 is fixed at the outer end of the piston rod of the oil cylinder I8.

Connection structure of the sealing plug 14: as shown in fig. 4, the piston rod outer end of the first oil cylinder 8 outwards protrudes to form a boss 15, the boss 15 is sleeved with a connecting block 16 and is fixed to the connecting block 16 through a pin shaft, the outer end of the connecting block 16 is fixedly connected with the sealing plug 14 through a screw 17, the sealing plug 14 is convenient to install, the sealing effect is prevented from being influenced by punching the side edge of the sealing plug 14, and meanwhile, a threaded hole is not required to be punched in the piston rod, so that the processing is convenient.

Furthermore, a limiting protrusion 18 protrudes outwards from the connecting block 16, a limiting groove 19 matched with the limiting protrusion 18 is formed in the connecting block 16, and a screw 17 penetrates through the sealing plug 14 and then is screwed with the connecting block 16.

In order to lengthen the length of the feeding pipe 7 and enlarge the space of the feeding channel 4, supporting plates 20 are arranged between the fixed die plate 6 and the concave die 2 and are positioned at two sides of the feeding pipe 7.

Preferably, the diameter of the feed channel 4 is 140mm to 160mm. In this example, the diameter of the feed channel was 152.4mm.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a compression molding mould is moulded to long fiber heat, includes core (1) of shaped article upper surface and die (2) of shaped article lower surface, and core (1) and die (2) form die cavity (3) when the compound die, its characterized in that: the material feeding device is characterized by further comprising a material feeding channel (4) used for placing a material block, wherein one end of the material feeding channel (4) is communicated with the cavity (3), and the other end of the material feeding channel is provided with a thrust device for pushing the material block into the cavity (3).

2. The long fiber thermoplastic molding die of claim 1, wherein: core (1) sets up on movable mould board (5), and die (2) set up on fixed die plate (6), be equipped with inlet pipe (7) between die (2) and fixed die plate (6), feedstock channel (4) set up in inlet pipe (7), and inlet pipe (7) one end is run through die (2) and is led to die cavity (3), the other end and is equipped with thrust device.

3. The long fiber thermoplastic molding die of claim 2, wherein: the thrust device comprises a first oil cylinder (8) fixed on the fixed die plate (6), and a piston rod of the first oil cylinder (8) extends into the feeding channel (4).

4. A long fiber thermoplastic molding die according to claim 3, wherein: a fixed die base (9) is arranged below the fixed die plate (6), one end, far away from the cavity (3), of the inlet pipe (7) is fixed to the fixed die plate (6), and a first oil cylinder (8) is fixed to the lower portion of the fixed die plate (6) and located in the fixed die base (9).

5. The long fiber thermoplastic molding die of claim 4, wherein: fixed die plate (6) top is equipped with push pedal (10) and release fixed plate (11) in proper order, and push pedal (10) and release fixed plate (11) centre gripping are used for push rod (12) one end that the goods were released, and the other end of push rod (12) is slided and is established on die (2), fixed die plate (6) below is fixed with two (13) of hydro-cylinder that are located fixed die base (9), and the piston rod of two (13) of hydro-cylinder passes fixed die plate (6) and connects push pedal (10).

6. A long fiber thermoplastic molding die according to claim 3, wherein: and a sealing plug (14) which is in sliding seal with the inner wall surface of the feeding pipe (7) is fixed at the outer end of a piston rod of the first oil cylinder (8).

7. The long fiber thermoplastic molding die of claim 6, wherein: the outer end of a piston rod of the first oil cylinder (8) protrudes outwards to form a boss (15), the boss (15) is sleeved with a connecting block (16) and is fixed with the connecting block (16) through a pin shaft, and the outer end of the connecting block (16) is fixedly connected with the sealing plug (14) through a screw (17).

8. The long fiber thermoplastic molding die of claim 2, wherein: and a supporting plate (20) positioned at two sides of the feeding pipe (7) is arranged between the fixed die plate (6) and the concave die (2).

9. The long fiber thermoplastic molding die of claim 1, wherein: the diameter of the feed channel (4) is 140mm-160mm.