CN210999850U

CN210999850U - Feeding core body

Info

Publication number: CN210999850U
Application number: CN201922049696.8U
Authority: CN
Inventors: 杨廷云
Original assignee: Guangzhou Dechuang Silicone Machinery Co ltd
Current assignee: Guangzhou Dechuang Silicone Machinery Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-14
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a feeding core body, which comprises a material guiding rod moving axially and a driving rod connected to the upper end of the material guiding rod and moving along with the material guiding rod, wherein the outer section of the material guiding rod is larger than that of the driving rod; a material guide cavity extending axially is arranged in the material guide rod, and a material discharge outer cavity is formed outside the driving rod; a material port for communicating the material guiding cavity with the discharging outer cavity is arranged at the position of the material guiding rod or the joint of the material guiding rod and the driving rod. Utilize the utility model discloses a structure, the feed core utilizes the guide chamber to receive the material and leads the material at axial motion's in-process, then compresses the material through the effect of material mouth and carries, carries the ejection of compact exocoel at last in, carries out echelon to the material on the one hand and carries, and on the other hand reduces the bubble in the material.

Description

Feeding core body

Technical Field

The utility model relates to a feed pay-off technical field, in particular to feed core.

Background

In the process of forming a product through a mold, a material is generally required to be heated, extruded and conveyed, and the material is injected into the mold through the heated, extruded and conveyed.

At present, two main devices for pressurizing and conveying materials are available, one is screw barrel conveying, and the other is plunger barrel conveying.

The main principle of the screw barrel conveying device is to convey materials through the rotation of a screw in a barrel, and the screw utilizes a helical blade on the rotating screw to shear, mix and convey the materials in the rotating process.

For a plunger type material barrel conveying device, a piston is mainly used for pushing materials in a material barrel to move, so that the conveying purpose is achieved. According to the material conveying device with the structure, the piston only plays a role in pushing materials, but the technical problem of reducing bubbles in the materials is not well solved.

Disclosure of Invention

An object of the utility model is to provide a feed core utilizes the utility model discloses a structure, feed core utilize the guide chamber to receive the material and lead to the material at axial motion's in-process, then compress the material through the effect of material mouth and carry, carry out ejection of compact exocoel at last, on the one hand carries out echelon transport to the material, and on the other hand reduces the bubble in the material.

In order to achieve the purpose, the feeding core body comprises a material guide rod moving axially and a driving rod connected to the upper end of the material guide rod and moving along with the material guide rod, wherein the outer section of the material guide rod is larger than that of the driving rod; a material guide cavity extending axially is arranged in the material guide rod, and a material discharge outer cavity is formed outside the driving rod; a material port for communicating the material guiding cavity with the discharging outer cavity is arranged at the position of the material guiding rod or the joint of the material guiding rod and the driving rod.

According to the feeding core body with the structure, in the axial movement process of the feeding core body, materials enter the material guide cavity from the feeding end of the material guide cavity, along with the increase of the materials in the material guide cavity, when the materials reach the position of the material port, the materials enter the discharging outer cavity from the material port. This structure, the axial motion of feed core lets the pan feeding enter into the guide intracavity, through the direction of guide chamber to the material, lets the material be extruded from the material mouth by the compression, under the effect of material mouth, compresses the extrusion to the material to let the bubble in the material discharge from the material, reduce the bubble in the material, in addition, the material is in proper order through guide chamber, material mouth and ejection of compact exocoel, carries out echelon extrusion to the material and carries, further reduces the bubble in the material, improves ejection of compact quality.

Furthermore, a connecting part with the diameter gradually reduced from the material guide rod to the driving rod is arranged between the material guide rod and the driving rod; the guide cavity extends into the connecting part, so that the guide rod is conveniently connected with the driving rod, the problem of stress concentration of connection is reduced, meanwhile, during axial movement of the feeding core body, the connecting part forms an oblique extrusion surface at one end of the discharging outer cavity, and therefore materials in the material outer cavity are conveniently compressed, and material dead zones are formed in the material outer cavity.

Further, the material opening is formed in the connecting portion.

Furthermore, the upper end of the material port is flush with the upper end of the material guiding cavity, so that the material cannot be left in the material guiding cavity when flowing out of the material port.

Drawings

FIG. 1 is a schematic perspective view of a feed system;

FIG. 2 is an exploded view of the feed system;

FIG. 3 is a cross-sectional view of a supply cartridge;

FIG. 4 is a cross-sectional view of a feed system;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is an enlarged view of C in FIG. 3;

FIG. 7 is an enlarged view at B in FIG. 4;

FIG. 8 is a plan cross-sectional view of the first one-way valve;

FIG. 9 is a plan cross-sectional view of a second one-way valve;

FIG. 10 is a perspective cross-sectional view of a second one-way valve;

FIG. 11 is a perspective cross-sectional view of a first one-way valve;

FIG. 12 is a perspective view of the axially movable valve;

fig. 13 is an exploded view of the axial travel valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 13, the feeding system comprises a feeding cylinder 1, an end cover assembly 2 and a feeding core device 3. In the present invention, the viewing directions of fig. 3 and 4 are referred to as the upper end of fig. 3 and 4 and the lower end of fig. 3 and 4. When in use, the feeding system can be vertically arranged or horizontally arranged.

One end of the feeding cylinder is provided with a feeding port 11, the other end of the feeding cylinder is provided with a discharging port 12 (shown in fig. 3), and a feeding core body device 3 is arranged in the feeding cylinder 1.

As shown in fig. 2 to 3, the supply cylinder 1 includes an outer sleeve 13 and a transparent inner sleeve 14 provided in the outer sleeve. The cross section of the outer sleeve 13 is circular, a window 131 through which the transparent inner sleeve can be observed is arranged on the outer sleeve 13, as shown in fig. 1, the window 131 is a long strip-shaped window with two arc-shaped ends extending along the axial direction of the outer sleeve 13, and in the embodiment, the window 131 is symmetrically arranged on the outer sleeve 13 relative to the central axis of the outer sleeve 13; screw holes 132 are provided at both ends of the outer sleeve 13, respectively. As shown in fig. 2 to 4, the transparent inner jacket 14 is composed of more than two transparent inner jacket bodies 141 which are axially contacted with each other, in this embodiment, the transparent inner sheath 141 has three parts, which are respectively defined as a lower inner sheath, a middle inner sheath and an upper inner sheath, a clamping groove 142 is arranged on the inner wall of the joint between the lower inner sleeve body and the middle inner sleeve body, a lower clamping ring groove 143 is arranged on the inner wall of the upper end of the middle inner sleeve body, so that a lower interpolation ring 144 is formed at the upper end of the middle inner sleeve body, an upper snap ring groove 145 is formed on the outer wall of the lower end of the upper inner sleeve body, so that the lower end of the upper inner sleeve body forms an upper interpolation ring 146, the lower interpolation ring 144 is inserted into the upper snap ring groove 145, the upper interpolation ring 146 is inserted into the lower snap ring groove 143, thereby connecting the upper centering inner sleeve body, and axially and radially positioning the transparent inner sleeve body, meanwhile, the connection path between the transparent inner sleeve bodies from inside to outside is increased, and materials in the transparent inner sleeve bodies are not easy to overflow from the connection parts of the transparent inner sleeve bodies.

As shown in fig. 3 and 5, the upper end surface of the transparent inner jacket 14 is lower than the upper end surface 131 of the outer jacket 13.

As shown in fig. 2, 4 and 5, the end cap assembly 2 includes an end cap sealing assembly 21 disposed at the discharge end of the supply cylinder 1 and a lower end cap 22 disposed at the feed end of the supply cylinder 1.

The end cap seal assembly 21 includes an upper end cap 211 and a retaining ring 212. The upper end cover 211 comprises an upper gland 2111, an upper connecting sleeve 2112 and an upper convex ring 2113, the upper connecting sleeve 2112 is connected to the upper gland 2111, the outer diameter of the upper connecting sleeve 2112 is smaller than that of the upper gland 2111, the upper convex ring 2113 is connected to the lower end of the upper gland 2111, the outer diameter of the upper convex ring 2113 is smaller than that of the upper connecting sleeve 2112, the upper gland 211 is pressed on the upper end surface 1411 of the transparent inner sleeve 14, the upper convex ring 2113 extends into the transparent inner sleeve 14, and axially extending sliding holes 2114 are formed in the upper gland 2111 and the upper connecting sleeve 2112. The fixing ring 212 is fitted over the upper coupling sleeve 2112, the fixing ring 212 is fixed by a screw passing through a screw hole connected to the upper end of the outer housing, and the fixing ring 212 is pressed against the upper end surface of the upper gland 211. The upper gland 211 is positioned in the outer sleeve, the lower end face of the upper gland 211 is pressed on the upper end face of the transparent inner sleeve, and the outer wall of the upper convex ring 2113 is contacted with the inner wall of the transparent inner sleeve, so that the upper gland 211 can be radially and axially positioned, and the transparent inner sleeve can be radially positioned through the upper convex ring 2113.

As shown in fig. 6, the lower cap 22 includes a lower cap body 221, a stop ring 222 connected to the upper end of the lower cap body 221, and a lower stop ring 223 disposed on the inner wall of the lower end of the lower cap body 221, wherein the outer diameter of the lower cap body 221 is smaller than the outer diameter of the stop ring 222. The lower end cover 22 is sleeved on the lower end of the outer sleeve, the lower resisting ring 223 is connected with the outer sleeve through screws, and the upper end face of the lower resisting ring 223 resists against the lower ends of the outer sleeve and the transparent inner sleeve. The transparent inner sleeve is axially limited by the lower retaining ring 223 and the upper gland 2111, and meanwhile, the contact between the adjacent transparent inner sleeve bodies is tighter by the retaining and pressing of the lower retaining ring 223 and the upper gland 2111, so that the sealing performance is improved. A bell mouth 224 with a larger lower end and a smaller upper end is provided at the lower end edge of the lower stopper ring 223 to facilitate feeding while guiding the movement of the axially moving valve.

As shown in fig. 3, the positioning ring 20 retained by the retaining ring 222 is sleeved outside the lower end cover body 221, the positioning ring 20 has a material guiding opening 200, and the material guiding opening 200 is gradually reduced from the lower end to the upper end, so that the material guiding is facilitated.

As shown in fig. 2, 4 and 7, the feed core device 3 comprises an axially movable valve 4, a first non-return valve 5, a second non-return valve 8 and a feed core 6.

As shown in fig. 2 and 4, the axial moving valve 4 is slidably disposed at the material inlet 11; the first one-way valve 5 is fixed in the middle of the inner wall of the transparent inner sleeve 14, and the axial moving valve 4 is positioned on one side of the feeding end of the first one-way valve 5; the second one-way valve 8 is slidably arranged in the transparent inner sleeve 14, and the second one-way valve 8 is positioned at the discharging side of the first one-way valve 5. The connection between the axially movable valve and the second check valve is by a connecting rod 100 passing through the first check valve. A first cavity 7 is formed between the axial moving valve 4 and the first one-way valve 5 in the transparent inner sleeve 14; a discharge cavity 71 communicated with the discharge hole 12 is arranged at the discharge end side of the first one-way valve 5 in the transparent inner sleeve 14, and the volume of the discharge cavity 71 is smaller than that of the first cavity 7; the discharge cavity 71 comprises a second cavity 72 and a third cavity 73, the volume of the first cavity is larger than that of the second cavity, the volume of the second cavity 72 is larger than that of the third cavity 73, and the driving member 6 drives the axial moving valve 4.

As shown in fig. 2, 4, 12 and 13, the axially moving valve 4 includes a moving valve body 41 and a valve block 42. The outer diameter of the valve body 41 fits the inner diameter of the transparent inner sleeve. More than one axially extending through holes 411 are uniformly distributed on the valve body 41 circumferentially around the center, and a through hole 412 is arranged at the center of the valve body 41; the valve block 42 comprises a valve block body 421 and valve block columns 422, the valve block columns 422 are connected to the valve block body 421, the valve block body 421 is provided with valve cores 4211 with the same number as the through holes and corresponding to the through holes, and the upper surface of the valve block body 421 gradually approaches to the middle from bottom to top; a screw rod penetrating through the through hole 412 penetrates through the axis of the valve block 42, a nut is arranged at the lower end of the screw rod, a spring is arranged between the nut and the valve body 42 on the screw rod, when pressure which is higher than the elastic force of the spring and is used for upwards giving the valve core 4211 is not given, the valve core 4211 blocks a through hole of the column, when the pressure which is higher than the elastic force of the spring and is used for upwards giving the valve core 4211 is given, the valve block 42 is pushed away by overcoming the elastic force of the spring, and materials can enter the transparent inner sleeve from the through.

As shown in fig. 2, 4, 7, 8 and 11, the first check valve 5 includes a first valve body 51 and a first valve spool 52; the first valve body 51 is clamped on the clamping groove 142 of the transparent inner sleeve 14, sealing rings are respectively arranged between the upper surface and the lower surface of the first valve body 51 and the clamping groove to improve the sealing performance, and the first valve body 51 is provided with a first material opening 511; the first valve core 52 includes a first valve ball 521, a first connecting rod and a first spring (not shown in the figure), the first valve ball 521 is disposed at the discharge end 5111 of the first material opening 511, the diameter of the first valve ball 51 is greater than the discharge end 5111 of the first material opening 511, the first connecting rod is connected to the first valve ball 521, the first connecting rod 522 movably passes through the first valve body 51, a first limit block 523 is disposed at one end of the first connecting rod away from the first valve ball 521, and the first spring is sleeved on the first connecting rod between the first limit block 523 and the first valve body 51. When the pressure in the first cavity is larger than the elastic force of the first spring, the first valve ball overcomes the elastic force of the first spring and is pushed open, and materials can enter the second cavity through the first material opening.

As shown in fig. 2, 4, 7, 9 and 10, the second check valve 8 includes a second valve body 81 and a second spool 82; the second valve body 8 is axially and slidably arranged in the transparent inner sleeve 14, an annular groove is arranged on the outer wall of the second valve body 81, a sealing ring 144 (shown in fig. 7) is arranged between the second valve body 81 and the transparent inner sleeve 14, and the second valve body 81 is provided with a second material port 811; the second valve core 82 includes a second valve ball 821, a second connecting rod and a second spring (not shown in the figure), the second valve ball 821 is arranged at the discharge end 8111 of the second material port 811, the diameter of the second valve ball 821 is larger than the discharge end 8111 of the second material port 811, the second connecting rod is connected to the second valve ball 821, the second connecting rod movably penetrates through the second valve body 821, a second limiting block 823 is arranged at one end of the second connecting rod far away from the second valve ball 821, and the second spring is sleeved on the second connecting rod 822 between the second limiting block 823 and the second valve body 81. When the pressure in the second cavity is larger than the elastic force of the second spring, the second valve ball overcomes the elastic force of the second spring and is pushed open, and the material can enter the third cavity through the second material opening.

The transparent inner sleeve 14 is positioned between the first one-way valve 5 and the second one-way valve 8 to form the second cavity 72, the transparent inner sleeve 14 is positioned at the discharge end of the second one-way valve 8 to form the third cavity 73, and the third cavity 73 is communicated with the discharge hole 12.

As shown in fig. 2 and 4, the feed core 6 passes through the end cap seal assembly 21; the lower end of the feed core 6 is connected to a second non return valve 8.

As shown in fig. 2 and 4, the feeding core 6 includes a material guiding rod 62 and a driving rod 63 connected to the upper end of the material guiding rod, the outer cross section of the material guiding rod 62 is larger than that of the driving rod 63, and in this embodiment, the outer diameters of the material guiding rod and the driving rod are both circular; the third cavity 73 comprises a material guide cavity 731 and a material outlet cavity 732; the lower end of the material guiding rod 62 is connected to the second one-way valve 8, and a material guiding cavity 731 communicated with the second one-way valve 8 is arranged in the material guiding rod 62; the driving rod 63 passes through the end cover sealing assembly 21 in a sliding manner, and a discharging outer cavity 732 is formed between the driving rod 63 and the transparent inner sleeve 14; a material port 734 for communicating the material guiding cavity 731 with the material discharging outer cavity 732 is arranged on the material guiding rod 62 or the connection part of the material guiding rod and the driving rod 63, and a connection part 735 is arranged between the material guiding rod 62 and the driving rod 63, wherein the diameter of the connection part gradually decreases from the material guiding rod 62 to the driving rod 63; guide chamber 731 extends to in connecting portion 735, like this, is convenient for be connected guide rod and actuating lever through connecting portion to reduce the stress concentration's of connecting problem, simultaneously, during the axial motion of feed core, connecting portion form the inclined plane of extrusion in the one end of ejection of compact exocoel, like this, are convenient for compress the material of material exocoel, form the material dead zone in the material exocoel with the reduction. In this embodiment, the upper end of the material port 734 is flush with the upper end of the material guide cavity 731. Therefore, the phenomenon of residual materials in the material guide cavity can not occur when the materials flow out of the material outlet.

The feeding method of the feeding system comprises the following steps:

1) positioning the positioning ring on the charging basket;

2) the driving rod 63 is driven by a driving device, which may be an air cylinder, an oil cylinder, a linear motor, etc. The actuating lever drive guide rod axial motion, guide rod drive second check valve axial motion, the second check valve passes through connecting rod drive axial displacement valve and opens, and after the pressure in the storage bucket was greater than the elasticity of spring, the valve block was opened, and the material flowed into in the first cavity from the horn mouth edge of through-hole and lower end cover.

3) After the material is filled with first cavity, driving piece drive axial displacement valve is to the motion of first cavity direction, at this moment, the through-hole is closed to the valve block under the effect of pressure, along with the motion of axial displacement valve, first case is backed down to the material, the material is extruded and is carried and enter into the second cavity toward the direction of keeping away from the axial displacement valve, and simultaneously, the second valve core is opened, the material enters into the guide intracavity from the second cavity, the material of guide intracavity enters into ejection of compact exocoel through the material mouth, then flows from the discharge gate.

The axial motion in-process of feed core, feed core of this embodiment, the material enters into the guide chamber from the feed end in guide chamber, and along with the material in the guide chamber constantly increases, when the material reaches the position of material mouth, the material enters into the ejection of compact intracavity from the material mouth. This structure, the axial motion of feed core lets the pan feeding enter into the guide intracavity, through the direction of guide chamber to the material, lets the material be extruded from the material mouth by the compression, under the effect of material mouth, compresses the extrusion to the material to let the bubble in the material discharge from the material, reduce the bubble in the material, in addition, the material is in proper order through guide chamber, material mouth and ejection of compact exocoel, carries out echelon extrusion to the material and carries, further reduces the bubble in the material, improves ejection of compact quality.

Claims

1. A feed core characterized by: the device comprises a guide rod moving axially and a driving rod connected to the upper end of the guide rod and moving along with the guide rod, wherein the outer section of the guide rod is larger than that of the driving rod; a material guide cavity extending axially is arranged in the material guide rod, and a material discharge outer cavity is formed outside the driving rod; a material port for communicating the material guiding cavity with the discharging outer cavity is arranged at the position of the material guiding rod or the joint of the material guiding rod and the driving rod.

2. The feed core of claim 1 wherein: a connecting part with the diameter gradually reduced from the material guide rod to the driving rod is arranged between the material guide rod and the driving rod; the material guide cavity extends into the connecting part.

3. A feed core as claimed in claim 2, wherein: the material port is arranged on the connecting part.

4. A feed core according to claim 1 or 3 wherein: the material port is a waist-shaped hole, and the upper end of the material port is flush with the upper end of the material guide cavity.