CN212019346U - Casting die of vertical extruder - Google Patents

Abstract

The utility model discloses a casting die for a vertical extrusion machine, which comprises a fixed die frame and a movable die frame. A fixed die core is arranged at one end of the fixed die frame facing the movable die frame, and the middle parts of the fixed die frame and the fixed die core are vertical A runner is arranged straight through, and the end of the movable mold frame facing the fixed mold frame is provided with a movable mold core. After the mold is closed, the movable mold core and the fixed mold core cooperate to form the cavity of the casting. The gate, the inner gate is connected with the cavity, and the molten metal enters the cavity from the outer end of the runner. The driving mechanism, the hot-cutting mechanism is connected with the hot-cutting mechanism, and drives the hot-cutting mechanism to move to the fixed die side to cut off the material cake at the inner gate. The material cake is cut in the direction of the fixed mold, and the material cake is ejected, so that the material cake can be easily separated from the runner, and the production efficiency is improved.

Description

A vertical extrusion press casting mold

technical field

The utility model relates to the field of extrusion casting moulds, in particular to a casting mould of a vertical extrusion machine.

Background technique

Squeeze casting is a common light-weight component forming technology in the industry. A certain amount of molten metal to be cast is injected into the cavity directly from the gate sleeve through the material cylinder, and is compressed by the movable mold and the fixed mold, so that the molten metal forms the casting according to the set structure in the cavity. , and demoulding after cooling to obtain casting products.

However, the existing extrusion press casting mold still has the following defects: due to the relatively slow flow speed of the material liquid in the extrusion casting process, on the one hand, in order to ensure the temperature of the material liquid in the flow channel, and on the other hand, in order to prevent air entrainment in the flow channel, the existing The diameter of the runner is set larger, the inner gate is thick, and the vertical extrusion casting is the center feed, so the cake formed in the inner gate and the runner during casting is relatively thick and sturdy, making it difficult to take out the cake. It is often necessary to manually excavate after opening the mold, which is time-consuming and labor-intensive and reduces production efficiency.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies in the prior art, the present utility model provides a casting mold for a vertical extrusion press, which can cut the material cake at the inner gate in the mold after the casting is completed through the hot-cutting mechanism in the mold, and send it to a fixed mold. The mold direction is cut off, and the cake is ejected, so that the cake can be easily separated from the runner, and the production efficiency is improved.

The technical solution adopted by the present invention to solve the above technical problems is as follows: a casting die for a vertical extrusion press, comprising a fixed die frame and a movable die frame, wherein the fixed die frame is disposed toward one end of the movable die frame. There is a fixed mold core, the middle of the fixed mold frame and the fixed mold core is vertically arranged with a flow channel, and a moving mold core is arranged in the end of the movable mold frame facing the fixed mold frame, The movable mold core and the fixed mold core cooperate to form the cavity of the casting after the mold is closed. The inner end of the runner is an inner gate, and the inner gate is connected with the mold The cavity is connected, the molten metal enters into the cavity from the outer end of the flow channel, the movable mold frame and the middle of the movable mold core are provided with an eager cutting mechanism, and the movable mold frame A hot-cutting driving mechanism is arranged outside, and the hot-cutting driving mechanism is connected with the hot-cutting mechanism to drive the hot-cutting mechanism to move to the fixed die side to cut off the material cake at the inner gate.

In some embodiments, the hot-cutting mechanism includes a punching needle and an insert sleeve, the punching needle is vertically arranged in the middle of the movable die frame and the movable die core, and the punching needle The outer end is connected with the hot cutting drive mechanism, the inner end of the punch is flush with the surface of the movable die core, the punch is coaxial with the flow channel, and the punch is coaxial with the flow channel. The diameter of the punch needle is slightly smaller than the diameter of the inner gate. When moving to the fixed die side, the inner end of the punch needle enters the inner gate and fits with the runner gap. The insert sleeve is arranged between the movable die core and the punching needle, the outer peripheral wall of the insert sleeve is fixed with the movable die core, and the inner peripheral wall of the insert sleeve is connected to the punching needle. The peripheral wall of the needle is a clearance fit. The hot-cutting drive mechanism drives the cylindrical punching needle to move to the fixed die side to cut off the material cake 7 at the gate 13. The hot-cutting mechanism of this design has a better effect; the sleeve structure is used to protect the movable die core from the hot-cutting up and down the punching needle. Not damaged during exercise.

In some embodiments, the eager drive mechanism includes an oil cylinder and a piston, the oil cylinder is provided with a piston chamber for the reciprocating motion of the piston, and one end of the piston is connected to the piston chamber. The other end of the piston is connected with the outer end of the punching needle, and the stroke range of the piston is 40-50 mm. Therefore, before the mold is opened after casting, the oil cylinder drives the piston to the fixed mold side to push the above-mentioned eager cutting mechanism to move to break the material cake in the runner, and then the oil cylinder drives the piston and the eager cutting mechanism to return.

In some embodiments, the outer end of the punching needle includes a first positioning boss, the outer end of the piston includes a second positioning boss, and the first positioning boss is the same as the first positioning boss. The two positioning bosses are fixedly connected, and the diameters of the two are the same, and both are larger than the diameters of the punching needle and the piston. The outer peripheries of the first positioning boss and the second positioning boss are useful A fastening ring is used to stabilize the connection between the first positioning boss and the second positioning boss, and the end of the movable mold frame facing away from the movable mold core is provided with the accommodating cavity for accommodating the fastening ring. Therefore, the connection performance between the punching needle and the piston is more stable, the accuracy when the punching needle is eagerly cut is improved, and the arrangement of the fastening ring and the accommodating cavity further ensures the stability of the structure.

In some embodiments, the diameter of the inner cavity of the fastening ring is larger than the diameter of the openings at both ends, and the first positioning boss and the second positioning boss are clamped and arranged in the inner cavity .

In some embodiments, a cooling water channel is provided in the punching needle, the water inlet and the water outlet of the cooling water channel are respectively arranged at the outer end of the punching needle, the water inlet and the The water outlets are respectively connected with external water pipes. This serves to cool the punch needle.

In some embodiments, the cooling water channel is arranged along the length direction of the punching needle, and a water blocking mechanism is arranged between adjacent pipelines of the cooling water channel. This has a better cooling effect.

In some embodiments, the diameter of the runner gradually decreases from the outer end to the inner gate, and the inclination of the side wall of the runner ranges from 3° to 8°. The side wall of the runner is set with a specific slope, which can make the cake easier to break out of the runner and fall out with gravity after the punch continues to push out a certain distance to the fixed die side.

In some embodiments, a die foot is further included, the upper end of the die foot is fixedly connected with the movable mold frame, and the lower end of the die foot is fixedly connected with the oil cylinder.

In some embodiments, both the punching needle and the inserting sleeve are made of hot work die steel. The punching needles and inserts made of this material have excellent mechanical and thermal properties, and are especially suitable for hot-cutting mechanisms.

Compared with the prior art, the advantage of the utility model is that: by setting the hot-cutting mechanism and the hot-cutting driving mechanism, the hot-cutting driving mechanism drives the hot-cutting mechanism to move to the fixed die side before the mold is opened after the injection is completed to punch and cut off the gate in the runner. The cake is cut in the direction of the fixed mold, and the cake is ejected, so that the cake can be easily separated from the runner, and then the cake falls to the outside of the mold under the action of gravity. , improve production efficiency.

Description of drawings

Fig. 1 is the sectional view of a kind of vertical extrusion press casting die of the present utility model;

2 is a cross-sectional view of a vertical extrusion press casting die of the present utility model in a state before hot cutting;

Fig. 3 is a sectional view of the state of the present utility model when the casting die of a vertical extrusion press is eagerly cut;

FIG. 4 is an exploded view of the hot-cutting mechanism of a casting die of a vertical extrusion press of the present invention.

Among them, the fixed mold frame 1, the fixed mold core 11, the runner 12, the inner gate 13, the movable mold frame 2, the movable mold core 21, the accommodating cavity 22, the cavity 3, the feeding port 4, the hot cutting mechanism 5, the punching Needle 51, insert 52, first positioning boss 53, fastening ring 54, cooling water channel 55, water blocking mechanism 56, eager drive mechanism 6, oil cylinder 61, piston 62, piston chamber 63, second positioning protrusion Table 64, cake 7, water pipe 8, die foot 9.

Detailed ways

The following describes a casting die for a vertical extrusion press of the present invention in further detail with reference to the accompanying drawings and examples, but it is not intended to limit the present invention.

Example 1

As shown in the figure, a casting die for a vertical extrusion press includes a fixed die frame 1 and a movable die frame 2. A fixed die core 11 is provided at one end of the fixed die frame 1 facing the movable die frame 2. The fixed die frame 1 and the movable die frame 2 are provided with a fixed die core 11. The middle of the fixed mold core 11 is provided with a flow channel 12 vertically through it, and a movable mold core 21 is provided at the end of the movable mold frame 2 facing the fixed mold frame 1. In the cavity 3 of the casting, the inner end of the runner 12 is the gate 13, the gate 13 is connected to the cavity 3, the outer end of the runner 12 is connected to the feed port 4, and the molten metal flows from the outside of the runner 12. The end enters into the cavity 3, the middle of the movable mold frame 2 and the movable mold core 21 is provided with a hot cutting mechanism 5, and the hot cutting driving mechanism 6 is provided outside the movable mold frame 2, and the hot cutting driving mechanism 6 is connected with the hot cutting mechanism 5 to drive the hot cutting mechanism. The mechanism 5 moves to the fixed mold side to cut off the cake 7 at the gate 13 .

Embodiment 2

The present embodiment proposes a casting die for a vertical extrusion press, which further defines the structure of the hot-cutting mechanism 5 on the basis of the first embodiment. In this embodiment, the hot-cutting mechanism 5 includes a punching needle 51 and an insert sleeve 52 , the punching needle 51 is vertically arranged in the middle of the movable die frame 2 and the movable die core 21 , and the outer end of the punching needle 51 is connected to the hot-cutting driving mechanism 6 , the inner end of the punching needle 51 is flush with the surface of the movable die core 21, the punching needle 51 is arranged coaxially with the runner 12, the diameter of the punching needle 51 is slightly smaller than the diameter of the inner gate 13, when moving to the fixed die side The inner end of the punch 51 enters the gate 13 and fits with the inner wall of the runner 12 , the insert 52 is arranged between the movable die core 21 and the punch 51 , and the outer peripheral wall of the insert 52 is fixed to the movable die core 21 , the inner peripheral wall of the insert sleeve 52 is in clearance fit with the outer peripheral wall of the punching needle 51 . The insert structure is used to protect the movable die core from being damaged when the punching needle is moved up and down eagerly.

Embodiment 3

The present embodiment proposes a casting die for a vertical extrusion press, which further defines the structure of the hot cutting drive mechanism 6 on the basis of the first embodiment. In this embodiment, the eager drive mechanism 6 includes an oil cylinder 61 and a piston 62. The oil cylinder 61 is provided with a piston chamber 63 for the reciprocating motion of the piston 62. One end of the piston 62 is connected to the piston chamber 63, and the other end of the piston 62 is connected Connected to the outer end of the punching needle 51, the stroke range of the piston 62 is 40 to 50 mm.

Embodiment 4

The present embodiment proposes a casting die for a vertical extrusion press, which further defines the structures of the eager cutting mechanism 5 and the eager cutting driving mechanism 6 on the basis of the second and third embodiments. In this embodiment, the outer end of the punching needle 51 includes a first positioning boss 53 , the outer end of the piston 62 includes a second positioning boss 64 , and the first positioning boss 53 is fixedly connected with the second positioning boss 64 . And the diameters of the two are the same, and both are larger than the diameters of the punching needle 51 and the piston 62. The outer circumferences of the first positioning boss 53 and the second positioning boss 64 are provided with a space between the first positioning boss and the second positioning boss. As for the connected fastening ring 54 , the end of the movable mold frame 2 facing away from the movable mold core 21 is provided with an accommodating cavity 22 for accommodating the fastening ring 54 during hot cutting.

In this embodiment, the diameter of the inner cavity of the fastening ring 54 is larger than the diameter of the openings at both ends, and the first positioning boss 53 and the second positioning boss 64 are clamped and arranged in the inner cavity.

Embodiment 5

The present embodiment proposes a casting die for a vertical extrusion press, which further defines the structure of the hot-cutting mechanism 5 on the basis of the second embodiment. In this embodiment, the flushing needle 51 is provided with a cooling water channel 55, and the water inlet and the water outlet of the cooling water channel 55 are respectively arranged on the outer end of the flushing needle, and the water inlet and the water outlet are respectively connected to the external water pipe 8. In this embodiment, the accommodating cavity 22 further includes a portion accommodating the external water pipe 8 .

In this embodiment, the cooling water channel 55 is arranged along the length direction of the punching needle 51, and a water blocking mechanism 56 is arranged between the adjacent pipelines of the cooling water channel 55, and the cooling water enters up and out.

Embodiment 6

The present embodiment proposes a casting die for a vertical extrusion press, which further improves other structures of the die on the basis of the above-mentioned embodiment. In this embodiment, the diameter of the runner 12 gradually decreases from the outer end to the inner gate 13, and the inclination of the side wall of the runner 12 ranges from 3° to 8°, preferably 5°.

A casting die for a vertical extrusion press further includes a die foot 9 , the upper end of which is fixedly connected with the movable die frame 2 , and the oil cylinder 61 is fixedly connected with the lower end of the die foot 9 .

Both the punching needle 51 and the insert sleeve 52 can be made of SKD61 hot work die steel, which has better mechanical and thermal properties.

The working principle of the casting die of the vertical extrusion press of the utility model is as follows: after the movable die and the fixed die are closed, the molten metal is injected from the flow channel into the cavity for extrusion casting, and after the casting is completed, a cake is formed in the flow channel. Before the mold is opened, the piston is driven by the oil cylinder to push the punching needle to the fixed die side, the punching needle punches and cuts off the material cake at the gate in the runner, and the punching needle continues to push out a distance to the fixed mold side to make the material cake easier to separate The flow channel, and then the oil cylinder drives the piston and the punching needle to return. After cooling and forming, the mold is opened, and the material cake falls out of the mold in the direction of gravity, and there is no need to manually excavate after the mold is opened, which can save time and labor and improve the production efficiency.

It is worth noting that the above is only the preferred embodiment of the present invention, and does not limit the scope of patent protection of the present invention. Or replace it with a technical equivalent. Therefore, any equivalent structural changes made by using the contents of the description and illustrations of the present invention, or directly or indirectly applied to other related technical fields, are all included within the scope of the present invention.

Claims (10)

1. A casting die for a vertical extrusion press, comprising a fixed die frame and a movable die frame, and a fixed die core is provided in the fixed die frame toward one end of the movable die frame, and the fixed die frame and the movable die frame are provided with a fixed die core. A flow channel is arranged vertically through the middle of the fixed mold core, and a moving mold core is provided in the movable mold frame at one end facing the fixed mold frame. The movable mold core and the fixed mold After the mold is closed, the cores cooperate to form the cavity of the casting, the inner end of the runner is an inner gate, the inner gate is connected with the cavity, and the molten metal flows from the runner. The outer end enters into the cavity, which is characterized in that a hot-cutting mechanism is provided in the middle of the movable mold frame and the movable mold core, and a hot-cutting driving mechanism is provided outside the movable mold frame. The hot-cutting driving mechanism is connected with the hot-cutting mechanism, and drives the hot-cutting mechanism to move to the fixed die side to cut off the material cake at the inner gate. 2 . The casting die for a vertical extrusion press according to claim 1 , wherein the hot-cutting mechanism comprises a punching needle and an insert sleeve, and the punching needle is vertically penetrated and arranged on the movable die frame. 3 . and the middle part of the movable die core, the outer end of the punching pin is connected with the hot cutting drive mechanism, and the inner end of the punching pin is flush with the surface of the movable die core, so The punching needle is coaxial with the runner, the diameter of the punching needle is slightly smaller than the diameter of the inner gate, and the inner end of the punching needle enters the The inner gate is matched with the runner, the insert sleeve is arranged between the movable die core and the punching needle, and the outer peripheral wall of the insert sleeve is connected to the movable die. The core is fixed, and the inner peripheral wall of the insert sleeve is in clearance fit with the outer peripheral wall of the punching needle. 3. A casting die for a vertical extrusion press according to claim 2, wherein the hot-cut driving mechanism comprises an oil cylinder and a piston, and the oil cylinder is provided with a piston cavity for the reciprocating motion of the piston One end of the piston is connected to the piston chamber, the other end of the piston is connected to the outer end of the punching needle, and the stroke range of the piston is 40-50 mm. 4 . The casting die for a vertical extrusion press according to claim 3 , wherein the outer end of the punching needle includes a first positioning boss, and the outer end of the piston includes a second positioning boss. 5 . A boss, the first positioning boss is fixedly connected with the second positioning boss, and the diameters of the two are the same, and both are larger than the diameters of the punching needle and the piston, and the first positioning boss is The outer periphery of the positioning boss and the second positioning boss is provided with a fastening ring for stabilizing the connection between the first positioning boss and the second positioning boss, and the movable mold frame An accommodating cavity for accommodating the fastening ring during hot cutting is provided at one end facing away from the movable mold core. 5. A casting die for a vertical extrusion press according to claim 4, wherein the inner cavity diameter of the fastening ring is larger than the diameter of the openings at both ends, and the first positioning boss and the The second positioning boss is clamped and arranged in the inner cavity. 6 . The casting die for a vertical extrusion press according to claim 2 , wherein a cooling water channel is arranged in the punching needle, and the water inlet and the water outlet of the cooling water channel are respectively arranged in the The outer end of the punching needle, the water inlet and the water outlet are respectively connected with external water pipes. 7. A casting die for a vertical extrusion press according to claim 6, wherein the cooling water channel is arranged along the length direction of the punching needle, and the adjacent pipelines of the cooling water channel There is a water barrier between them. 8. A casting die for a vertical extrusion press according to claim 1, wherein the diameter of the runner gradually decreases from the outer end to the inner gate, and the side wall of the runner has a The inclination range is 3 to 8°. 9 . The casting die for a vertical extrusion press according to claim 3 , further comprising a die foot, the upper end of the die foot is fixedly connected to the movable die frame, and the The lower end is fixedly connected with the oil cylinder. 10 . The casting die for a vertical extrusion press according to claim 2 , wherein the punching needle and the insert sleeve are made of hot work die steel. 11 .

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