CN216860543U - Shunt material flow channel extrusion die structure - Google Patents

Abstract

The utility model provides an extrusion die structure for a material distribution channel, which belongs to the technical field of extrusion die. It solves the technical problem of uneven distribution of the existing extrusion die. The structure of the extrusion die structure of the material distribution channel includes a die outer cylinder and a horizontally arranged die core, the die outer cylinder is sleeved on the outer peripheral surface of the die core, and the top of the die outer cylinder has a feeding hole, so The surface of the mold core has a material distribution groove and the material distribution groove is opposite to the feeding hole. The surface of the mold core also has two distribution channels inclined from top to bottom and communicated with the discharge end of the mold core. The distribution channels are symmetrically arranged on both radial sides of the mold core, and the upper ends of the distribution channels are all communicated with the material distribution groove, and the joints between the distribution channel and the material distribution groove are all constricted. The utility model can avoid the excessive difference of the shunt on both sides, and improve the uniform effect of the shunt.

Description

A material distribution channel extrusion die structure

technical field

The utility model belongs to the technical field of extrusion dies, and relates to an extrusion die structure of a material distribution channel extrusion die structure.

Background technique

The extruder relies on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and uniformly mixed, and formed through the die. The extruder is a common equipment in chemical production, among which the hose extruder is an extruder that can extrude the hose. The existing hose extruder does not have a good shunting of its extrusion head, resulting in extruded products. The thickness varies, which affects the overall product quality.

The Chinese patent with the authorization announcement number CN210792017U discloses a composite double-layer tube extruder die core, the die core includes an inner die core and an outer die core, and the inner die core is sleeved in the outer die core, The outer wall of the outer mold core is provided with a first gate, the outer wall of the inner mold core is provided with a second gate, the outer mold core is provided with a feeding hole for feeding the inner film core, the outer and inner The outer wall of the mold core is provided with a runner structure of the same shape. The runner structure includes a number of main channels and a number of branch channels that redistribute the main channels. The main channels are roughly evenly distributed arcs, so The outlet ends of the branch channels communicate with each other.

The above structure can achieve the diversion effect, but when in use, the flow material often diverts too much to a certain main channel, which affects the uniform effect of diversion.

SUMMARY OF THE INVENTION

Aiming at the above-mentioned problems existing in the prior art, the utility model provides a material distribution channel extrusion die structure material distribution channel extrusion die structure. The technical problem to be solved by the utility model is: how to improve the uniformity of the flow material .

The purpose of this utility model can be realized by following technical scheme:

A material distribution channel extrusion die structure comprises a die outer cylinder and a horizontally arranged die core, the die outer cylinder is sleeved on the outer peripheral surface of the die core, and the top of the die outer cylinder has a feeding hole , characterized in that the surface of the mold core has a material distribution groove and the material distribution groove is opposite to the feeding hole, and the surface of the mold core also has two inclined from top to bottom and communicated with the discharge end of the mold core. A distribution channel, the two distribution channels are symmetrically arranged on both radial sides of the mold core, and the upper ends of the distribution channels are both communicated with the material distribution channel, and the joints between the distribution channel and the material distribution channel are all constricted.

The outer mold of the machine head and the mold core cooperate to form a space for the flow of the outer tube layer, and at the discharge end of the mold core, the flow material and the pipe fittings are combined to form, and the feeding hole is used for continuous feeding; The lower end is provided with a facing distribution chute, and two downwardly inclined and symmetrical distribution channels are set to communicate with the distribution chute, so that the joints between the distribution channels and the distribution chute are all constricted, so that the continuous self-feeding hole is The flow material entering the distribution tank can enter different distribution channels respectively, and due to the existence of the constriction structure, the flow rate of the two distribution channels is restricted, that is, if there is a lot of flow material flowing to the same distribution channel, the flow rate will be reduced. The pressure on one side increases faster, which will flow toward the other side, thereby avoiding the excessive difference between the two sides of the split, improving the uniformity of the split and ensuring the uniformity of the flow.

In the above-mentioned material distribution channel extrusion die structure, the inner wall of the material distribution channel and the inner wall of the distribution channel on the side near the discharge end of the mold core has undergone arc surface transition treatment. The overall flow direction of the flow material is towards the discharge end of the mold core, which is conducive to the smooth and continuous flow of the flow material to the outside, avoiding the formation of material accumulation in the dead corner and affecting the quality of subsequent products.

In the above-mentioned material distribution channel extrusion die structure, there is an annular material flow cavity between the outer cylinder of the die head and the die core, and both the material distribution channel and the material distribution channel are connected to the material flow cavity. Connected. This ensures that the flow material effectively fills the outer circumference of the entire core and makes the discharge uniform.

In the above-mentioned material distribution channel extrusion die structure, the radial dimension of the lower end of the feed hole is smaller than the width dimension of the material distribution groove along the axis of the mold core. In this way, the lower end of the feed hole falls within the range of the feed slot to achieve the diversion effect and avoid the high-pressure flow material flowing out of the feed hole from directly flowing along the surface of the mold core outside the feed slot and affecting the diversion effect.

In the above-mentioned extrusion die structure of the material distribution channel, the outer peripheral surface of the mold core has a convex ring arranged in the circumferential direction, and the convex ring is located between the position of the material distribution channel and the discharge end of the mold core , the outer diameter of the convex ring is smaller than the radial dimension of the inner cavity of the outer cylinder of the handpiece. In this way, the convex ring can confine the flow material to this place, so that the flow material can gradually fill the space in the split flow channel from bottom to top, so that the flow material flowing to the discharge port is uniform and the product quality is guaranteed.

In the above-mentioned extrusion die structure for the distribution channel, there are more than three convex rings and are arranged at intervals along the axial direction of the die core, and the other convex rings located between the two outermost convex rings have a circumferential direction. Spaced notches. In this way, the pressure of the flow material passing through the convex ring is more uniform, and at the same time, the flow material can flow through the gap, which is beneficial to reduce the flow resistance of the flow material between the convex rings.

In the above-mentioned structure of the extrusion die for the distribution channel, the outlet end of the outer cylinder of the machine head is fixedly connected with a concentrically arranged annular die, and the annular die is sleeved on the periphery of the die core. The top has a vertically communicating marking hole, and the lower end of the marking hole is directly opposite to the mold core. In this way, the flow material used for marking the pipe fittings can enter from the marking material hole to be combined with the pipe fittings, so as to realize stable identification of the product.

Compared with the prior art, the advantages of the present utility model are as follows:

The extrusion die structure of the material distribution channel is connected with the material distribution tank by setting a facing material distribution tank at the lower end of the feed hole, and setting two downwardly inclined and symmetrical distribution channels to communicate with the material distribution tank, so that the distribution channel and the material distribution tank are joined together. All of them are in the shape of a constriction, so that the flow material that continuously enters the distributing tank from the feed hole can enter different diversion channels respectively, and due to the existence of the constriction structure, the flow of the two diversion channels is restricted, that is, if When there is a lot of flow material flowing to the same shunt channel, the pressure on this side will increase faster, and then it will flow to the other side, thereby avoiding the excessive difference in the shunt flow on both sides, improving the uniform flow effect and ensuring the flow rate of the material. evenness.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of this embodiment.

FIG. 2 is a schematic cross-sectional structure diagram of this embodiment.

FIG. 3 is a schematic perspective view of a partial structure of this embodiment.

In the figure, 1. the outer cylinder of the machine head; 11. the feeding hole;

2. Die core; 21. Distributing chute; 22. Diverting channel; 23. Convex ring; 231. Notch; 24. Discharge end;

3. Flow chamber;

4. Ring die; 41. Mark the hole.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

As shown in Figure 1-3, the structure of the extrusion die structure of the material distribution channel includes a die outer cylinder 1 and a horizontally arranged die core 2. The die outer cylinder 1 is sleeved on the outer peripheral surface of the die core 2. The top of the barrel 1 has a feeding hole 11, and the surface of the mold core 2 facing the lower end of the feeding hole 11 has a material distribution groove 21, and the surface of the mold core 2 also has two inclined from top to bottom. The shunt channel 22 communicated with the end 24, the two shunt channels 22 are symmetrically arranged on both radial sides of the mold core 2, and the upper ends of the shunt channels 22 are both communicated with the distribution trough 21, and the junction of the shunt channel 22 and the distribution trough 21. All are constricted. The outer mold of the machine head and the mold core 2 cooperate to form a space for the flow of the outer tube laminar material, and at the discharge end 24 of the mold core 2, the flow material and the pipe fittings are combined to form, and the feeding hole 11 is used for continuous feeding; At the lower end of the feeding hole 11, a facing distribution chute 21 is arranged, and two downwardly inclined and symmetrical distribution channels 22 are arranged to communicate with the distribution chute 21, so that the joints between the distribution channels 22 and the distribution chute 21 are all constricted. In this way, the flow material that continuously enters the distribution tank 21 from the feeding hole 11 can enter different distribution channels 22 respectively, and due to the existence of the constriction structure, the flow of the two distribution channels 22 is restricted, that is, if When there is a lot of flow material flowing to the same shunt channel 22, the pressure on this side will increase faster, and then it will flow to the other side, thereby avoiding the difference of the shunt flow on both sides being too large, improving the uniformity effect of the shunt flow and ensuring the flow of material. uniformity. Preferably, the inner walls of the material distribution trough 21 and the distribution channel 22 on the side close to the discharge end 24 of the mold core 2 have undergone arc surface transition treatment. The overall flow direction of the flow material is toward the discharge end 24 of the mold core 2, which is conducive to the smooth and continuous flow of the flow material to the outside, and avoids the formation of accumulated material in the dead corner and affects the quality of subsequent products. There is an annular material flow cavity 3 between the outer cylinder 1 of the machine head and the mold core 2 , and the material distribution groove 21 and the distribution channel 22 are both communicated with the material flow cavity 3 . This ensures that the flow material effectively fills the outer circumference of the entire mold core 2, so that the material is discharged evenly. The radial dimension of the lower end of the feed hole 11 is smaller than the width dimension of the feed slot 21 along the axis of the mold core 2 . In this way, the lower end of the feed hole 11 falls within the range of the material distribution slot 21 to achieve the diversion effect, and avoid the high pressure flow material flowing out of the feed hole 11 from directly flowing along the surface of the mold core 2 outside the feed slot 21 to affect the diversion effect. . The outer peripheral surface of the mold core 2 has a convex ring 23 arranged around the circumference. The convex ring 23 is located between the position of the material distribution chute 21 and the discharge end 24 of the mold core 2. The outer diameter of the convex ring 23 is smaller than the outer diameter of the machine head. The radial dimension of the inner cavity of the barrel 1. In this way, the convex ring 23 can confine the flow material to this place, so that the flow material can gradually fill the space in the sub-flow channel from bottom to top, so that the flow material flowing to the discharge end 24 is uniform, and the product quality is guaranteed. Preferably, there are more than three protruding rings 23 arranged at intervals along the axial direction of the mold core 2 , and the protruding ring 23 located between the two outermost protruding rings 23 has notches 231 arranged at intervals along the circumferential direction. In this way, the pressure of the flow material passing through the convex ring 23 is more uniform, and at the same time, the flow material can flow through the gap 231 , which is beneficial to reduce the flow resistance of the flow material between the convex rings 23 .

As shown in Figures 1-3, the outlet end of the outer cylinder 1 of the machine head is fixedly connected with a concentrically arranged annular die 4, the annular die 4 is sleeved on the periphery of the die core 2, and the top of the annular die 4 has a vertical The connected marking material hole 41, the lower end of the marking material hole 41 is directly opposite to the mold core 2. In this way, the flow material for marking the pipe fitting can enter from the marking material hole 41 to be combined with the pipe fitting, so as to realize stable identification of the product.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from the spirit of the present invention or go beyond the appended claims the defined range.

Claims (7)

1. The utility model provides a reposition of redundant personnel flow channel extrusion tooling structure, includes mold core (2) that aircraft nose urceolus (1) and level set up, aircraft nose urceolus (1) cover is located the outer peripheral face of mold core (2), this aircraft nose urceolus (1) top has feed port (11), a serial communication port, mold core (2) surface have divide silo (21) and divide silo (21) with feed port (11) are relative, this mold core (2) surface still have two top-down slopes set up and with reposition of redundant personnel passageway (22) of discharge end (24) intercommunication of mold core (2), two reposition of redundant personnel passageway (22) symmetrical arrangement in the radial both sides of mold core (2) and the upper end of reposition of redundant personnel passageway (22) all with divide silo (21) intercommunication, and this reposition of redundant personnel passageway (22) all are the throat form with the junction of dividing silo (21).

2. The distributing runner extrusion die structure according to claim 1, characterized in that the distributing groove (21) and the inner wall of the distributing channel (22) on the side close to the discharge end (24) of the die core (2) are both subjected to cambered surface transition treatment.

3. The distribution runner extrusion die structure according to claim 1 or 2, characterized in that an annular flow cavity (3) is arranged between the outer head cylinder (1) and the die core (2), and the distribution groove (21) and the distribution channel (22) are both communicated with the flow cavity (3).

4. A divided material flow channel extrusion die structure according to claim 1 or 2, characterized in that the radial dimension of the lower end of the feed hole (11) is smaller than the width dimension of the divided material groove (21) along the axis of the die core (2).

5. The distribution runner extrusion die structure according to claim 3, characterized in that the outer peripheral surface of the die core (2) is provided with a convex ring (23) arranged around the circumference, the convex ring (23) is positioned between the position of the distribution groove (21) and the discharge end (24) of the die core (2), and the outer diameter of the convex ring (23) is smaller than the radial dimension of the inner cavity of the outer cylinder (1) of the machine head.

6. The structure of the dividing runner extrusion mold of claim 5, wherein the protruding rings (23) have more than three gaps arranged at intervals along the axial direction of the mold core (2), and the other protruding rings (23) between the two outermost protruding rings (23) have notches (231) arranged at intervals along the circumferential direction.

7. The extruding die structure with the distribution flow channels as claimed in claim 1 or 2, wherein the outlet end of the outer barrel (1) of the machine head is fixedly connected with an annular mouth die (4) which is concentrically arranged, the annular mouth die (4) is sleeved on the periphery of the die core (2), the top of the annular mouth die (4) is provided with a marking material hole (41) which is vertically communicated, and the lower end of the marking material hole (41) is opposite to the die core (2).

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