CN210080688U - Injection punch - Google Patents
Injection punch Download PDFInfo
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- CN210080688U CN210080688U CN201920145240.9U CN201920145240U CN210080688U CN 210080688 U CN210080688 U CN 210080688U CN 201920145240 U CN201920145240 U CN 201920145240U CN 210080688 U CN210080688 U CN 210080688U
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Abstract
The utility model discloses an injection punch, which comprises a punch base, a punch shell and a punch body, wherein the center of the punch base and the punch body is provided with a cooling water inlet pipe, a plurality of cooling branch pipelines are uniformly distributed on the periphery of the punch base, the punch base is provided with a water outlet cavity communicated with all the cooling branch pipelines, and the punch body is provided with a water inlet flow regulating mechanism; the water inlet flow regulating mechanism is provided with a control switch which can control the flow of each cooling branch pipeline according to the temperature change. The utility model discloses under operating condition, when drift temperature distribution is uneven, the high temperature-sensing chamber pressure of temperature is big, promote the coolant flow of flow control switch increase this control area, the coolant flow of other cooling areas is reduced through the pressure effect in pressure adjustment chamber simultaneously, make the drift temperature reach balance, thereby make the circumference thermal expansion volume of drift keep unanimous, can make it maintain better circularity and axiality when with the cooperation of pressing the injection chamber all the time, the life of drift has been promoted greatly.
Description
Technical Field
The utility model belongs to the technical field of die-casting equipment technique and specifically relates to a drift is penetrated to pressure.
Background
At present, a die casting machine is pressure casting equipment, has the advantages of high dimensional precision, high production speed, good mechanical property of castings, smooth surfaces of castings and the like, and is generally used for casting mass nonferrous metals. During die casting, the temperature of the metal solution can reach 500-700 ℃. The injection punch is a part of a die casting machine and is used for quickly pressing high-temperature metal solution in an injection chamber into a die cavity under the action of a hydraulic push rod, maintaining the high-temperature metal solution at a certain pressure for a period of time until a casting is finally cooled and formed, and then entering the next injection cycle.
When the existing injection punch is used for injection, the injection punch can bear large injection force in the process of high-speed movement in an injection chamber. If the shot punch and the shot chamber are not coaxial, there can be significant friction that can cause wear of the shot punch and the shot chamber. The injection punch and the injection chamber are in long-term contact with high-temperature molten metal and can be deformed by heat, and uneven temperature distribution on the injection punch can cause uneven thermal deformation. Therefore, the roundness of the injection punch is changed, and the friction between the injection punch and the injection chamber is aggravated to cause abrasion; and also can cause a partially too small or too large gap between the shot punch and the shot chamber, resulting in liquid leakage. The leaked molten metal can cause the injection punch to generate large friction, scratch and even be stuck after being cooled, and the service lives of the injection punch and the injection chamber are seriously influenced.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an injection punch head which can avoid thermal deformation and has long service life.
In order to realize the purpose, the utility model discloses a technical scheme is: an injection punch characterized by: the punching head comprises a punching head base, a punching head shell and a punching head body arranged on the punching head base, wherein a cooling water inlet pipe is arranged in the center of the punching head base and the punching head body, a plurality of cooling branch pipelines are uniformly distributed on the periphery of the punching head base, a water outlet cavity communicated with all the cooling branch pipelines is arranged on the punching head base, a water inlet flow regulating mechanism is also arranged at one end of the punching head body, and the punching head shell is sleeved on the punching head body and the water inlet flow regulating mechanism and is fixedly connected with the punching head base 1; the inlet water flow regulating mechanism comprises a mechanism body fixedly arranged on the punch body, a water inlet cavity communicated with the outlet of the cooling water inlet pipe is arranged in the center of the mechanism body, water guide pipelines in one-to-one correspondence with the cooling branch pipelines are arranged on the periphery of the mechanism body, and each water guide pipeline is respectively communicated with the water inlet cavity; each water guide pipeline is also provided with a flow control switch, the mechanism body is also provided with a pressure regulating cavity and a plurality of temperature sensing cavities which are uniformly distributed on the periphery of the mechanism body, and each water guide pipeline corresponds to one temperature sensing cavity; the flow control switch comprises a switch separation blade, a first piston and a second piston, the pressure adjusting cavity is communicated with the water guide pipeline through a first piston pipeline, the temperature sensing cavity is communicated with the water guide pipeline through a second piston pipeline, the first piston and the second piston are respectively arranged in the first piston pipeline and the second piston pipeline, a compressible medium is filled in the pressure adjusting cavity, a compressible heat-sensitive medium is filled in the temperature sensing cavity, and a moving groove of the separation blade is formed in the pipe wall of the water guide pipeline.
Further, the compressible heat-sensitive medium filled in the temperature sensing cavity is a liquid heat-sensitive medium or a gas heat-sensitive medium.
Further, the mechanism body comprises a seat body arranged on the punch head body and a sealing plate fixedly arranged on the seat body.
Furthermore, one surface of the switch baffle is tightly attached to the wall of the movable groove, and a gap exists between the other surface and the corresponding groove wall.
Further, the punch housing is made of beryllium copper material.
Furthermore, a water outlet flow adjusting mechanism is arranged between the punch body and the punch base 1, and the water outlet flow adjusting mechanism and the water inlet flow adjusting mechanism have the same structure.
Furthermore, the punch body, the water inlet end flow regulating mechanism and the water outlet end flow regulating mechanism have the same outer diameter and are coaxially mounted.
Furthermore, the pressure adjusting cavity is an annular cavity, is coaxially arranged with the cooling water inlet pipe and is positioned outside the cooling water inlet pipe.
The utility model has the advantages that: adopt above-mentioned structure, press the drift to realize the self-balancing regulation of temperature, when the temperature in certain region is higher than other regions, can increase this regional coolant flow automatically, reduce the lower coolant flow of other temperatures simultaneously, realize the temperature automatic balance in each region to its circularity of effectual control, effectual reduction is because of the drift is because of the inhomogeneous disalignment that causes of temperature distribution, wearing and tearing, card die and weeping phenomenon.
In addition, the replaceable beryllium copper shell is adopted, when the shell of the punch is damaged, only the beryllium copper shell of the punch needs to be replaced, and other structures of the punch do not need to be replaced. Therefore, the service life of the punch can be effectively prolonged, and the use cost can be greatly saved. The utility model discloses more traditional drift is more excellent in reliability, security and economic nature.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a longitudinal sectional view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic structural view of the punch housing of the present invention.
Fig. 4 is a schematic view of the structure of the middle punch base of the present invention.
Fig. 5 is a schematic structural view of the middle punch body of the present invention.
Fig. 6 is a schematic structural view of the medium water inflow adjusting mechanism of the present invention.
Fig. 7 is a side sectional view of the middle inlet flow adjusting mechanism of the present invention.
Fig. 8 is a schematic structural diagram of the flow control switch according to the present invention after being installed.
Fig. 9 is a sectional view taken in the direction of a-a in fig. 7.
Fig. 10 is a schematic structural diagram of the middle flow control switch of the present invention.
Detailed Description
As shown in fig. 1-3, the utility model relates to an injection drift, including drift base 1, drift shell 2 and install drift body 3 on drift base 1, be equipped with a cooling water inlet pipe 4 in the center of drift base 1 and drift body 3, a plurality of cooling branch pipelines 31 have been seted up to the equipartition all around, be equipped with the play water cavity 11 with all cooling branch pipelines 31 intercommunication on drift base 1, still install an inflow adjustment mechanism 5 on drift body 3 one, 2 suits of drift shell are on drift body 3 and inflow adjustment mechanism 5 and with drift base 1 fixed connection.
As shown in fig. 4, the punch base 1 is composed of a port 11 and a base 12, and the port 11 and the base 12 are centrally opened for passing through the cooling water inlet pipe 4. The interface 11 is provided with a thread 13 for connecting the injection rod; the base 12 is provided with threaded holes 14 which are uniformly distributed in the circumferential direction and used for mounting the punch beryllium copper shell 2.
As shown in fig. 6-10, the inflow regulating mechanism 5 includes a mechanism body 51 fixedly mounted on the punch body 3, the mechanism body 51 includes a seat body 511 and a sealing plate 512 fixedly mounted on the seat body 511, and the seat body 511 is further provided with a mounting hole 513. A water inlet cavity 52 communicated with the outlet of the cooling water inlet pipe 4 is arranged in the center of the seat body 511 of the mechanism body 51, water guide pipelines 53 corresponding to the cooling branch pipelines 31 one by one are arranged on the periphery of the seat body, and each water guide pipeline 53 is respectively communicated with the water inlet cavity 52 through a connecting pipeline 521. Each water guide pipeline 53 is also provided with a flow control switch 54, the mechanism body 51 is also provided with a pressure regulating cavity 55 and a plurality of temperature sensing cavities 56 which are uniformly distributed on the periphery of the mechanism body 51, and each water guide pipeline 53 corresponds to one temperature sensing cavity 56.
The flow control switch 54 comprises a switch catch 541, a first piston 542 and a second piston 543, the pressure adjusting cavity 55 is communicated with the water guide pipeline 53 through a first piston pipeline, the temperature sensing cavity 56 is communicated with the water guide pipeline 53 through a second piston pipeline, the first piston 542 and the second piston 543 are respectively arranged in the first piston pipeline and the second piston pipeline, the pressure adjusting cavity 55 is filled with a compressible medium, the temperature sensing cavity 56 is filled with a compressible heat-sensitive medium, and the wall of the water guide pipeline 53 is provided with a moving groove 531 of the catch 541.
The compressible heat-sensitive medium filled in the temperature sensing cavity 56 is a liquid heat-sensitive medium; the pressure regulating chamber 55 is filled with a compressible liquid medium. Of course, in practice, a compressible gaseous medium may also be used. A gaseous heat sensitive medium. Specifically, the pressure adjusting cavity 55 is a circular ring-shaped cavity, and is coaxially disposed with the cooling water inlet pipe 4 and located outside the cooling water inlet pipe 4.
Further, one surface of the switch catch 541 is closely attached to the groove wall of the moving groove 531, and a gap 532 is formed between the other surface and the corresponding groove wall. In this way, the pressure equalization between the area of the switch blade 541 in the travel groove 531 and the water conduit 53 can be ensured, and the entire flow rate control switch 54 can be flexibly slid.
Preferably, the punch housing 2 is made of beryllium copper; the material has high strength and hardness, good wear resistance and impact toughness, and remarkably prolonged service life compared with other materials. In addition, when the outer part of the punch has the problems of abrasion, cracks and the like, the shell 2 of the punch can be replaced without replacing the whole punch, so that the later maintenance cost can be reduced.
Further, a water outlet flow adjusting mechanism 6 is arranged between the punch body 3 and the punch base 1 and used for adjusting the flow of the outlet end of the cooling branch pipe. The structure of the water outlet flow regulating mechanism 6 is basically the same as that of the water inlet flow regulating mechanism 5. Only a through hole is arranged in the middle of the sealing plate 7 on the water outlet flow adjusting mechanism 6 for the coolant inlet pipe 4 to pass through.
Furthermore, the punch body 3, the water inlet end flow regulating mechanism 5 and the water outlet end flow regulating mechanism 6 have the same outer diameter and are coaxially mounted. Specifically, screw holes 32 are formed in both ends of the punch body 3 and used for installing the water inlet end flow adjusting mechanism 5 and the water outlet end flow adjusting mechanism 6.
The following is a detailed description of how the present invention can achieve temperature self-regulation by the inlet flow regulating mechanism.
Initial state, at room temperature, assuming a medium pressure P in the pressure regulating chamber0The medium pressure in the temperature sensing cavity of each flow control unit is P1、P2、…PnAnd ensure P0=P1=P2=…=PnThe open/close flaps 541 are in the same half open/close position (i.e., the coolant flowing through the conduit 53 is equal). The coolant is supplied to ensure rapid cooling of the shot punch regions when the flow control switch 53 is fully open. Because the pressure adjusting cavity 55 is tightly attached to the outer ring of the cooling water pipe 4, the coolant reaches the cooling cavity 71 after passing through the cooling water pipe 4, and the coolant cools the pressure adjusting cavity 55 at first, so that the temperature of the medium in the pressure adjusting cavity is ensured to be not greatly increased, and the temperature of the medium is close to the initial room temperature.
During injection, the metal solution is poured into the injection chamber, the bottom of the injection punch contacts with the metal solution firstly, the temperature rises first, the temperature of other areas also rises, the temperature distribution is uneven, the heat-sensitive medium in the temperature sensing cavity 56 is heated and expanded, and the pressure changes. When the pressure in a certain temperature sensing chamber 56 is greater than the pressure in the pressure adjusting chamber 55, the corresponding second piston 543 is pushed to move, so that the switch blocking piece 541 is pushed to move into the moving groove 531, thereby increasing the coolant flow rate of the outlet of the corresponding water guiding pipeline, i.e. increasing the coolant flow rate of the corresponding cooling branch pipeline, and reducing the temperature of the area. When the pressure in a certain temperature sensing cavity 56 is lower than the pressure in the pressure regulating cavity 55, the medium in the pressure regulating cavity 55 pushes the corresponding flow control switch (53) to move, and the coolant flow of the corresponding cooling branch pipe is reduced. Therefore, dynamic balance of pressure is realized, and the flow of the corresponding cooling branch pipeline can be adjusted according to different temperatures of each point; therefore, the temperature of the injection punch is automatically adjusted, the working roundness and coaxiality of the injection punch are ensured to be close to those of the injection punch during non-working, and the abrasion and liquid leakage are reduced.
The above description is only for the purpose of illustrating the technical solutions of the present invention, and the simple modification or equivalent replacement of the technical solutions of the present invention by those of ordinary skill in the art does not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. An injection punch characterized by: the punch comprises a punch base (1), a punch shell (2) and a punch body (3) arranged on the punch base (1), wherein a cooling water inlet pipe (4) is arranged in the center of the punch base (1) and the punch body (3), a plurality of cooling branch pipelines (31) are uniformly distributed and arranged on the periphery of the punch base (1), a water outlet cavity (11) communicated with all the cooling branch pipelines (31) is arranged on the punch base (1), a water inlet flow regulating mechanism (5) is further arranged at one end of the punch body (3), and the punch shell (2) is sleeved on the punch body (3) and the water inlet flow regulating mechanism (5) and is fixedly connected with the punch base (1);
the water inlet flow regulating mechanism (5) comprises a mechanism body (51) fixedly arranged on the punch head body (3), a water inlet cavity (52) communicated with the outlet of the cooling water inlet pipe (4) is arranged in the center of the mechanism body (51), water guide pipelines (53) corresponding to the cooling branch pipelines (31) one by one are arranged on the periphery of the mechanism body, and each water guide pipeline (53) is respectively communicated with the water inlet cavity (52); each water guide pipeline (53) is also provided with a flow control switch (54), the mechanism body (51) is also provided with a pressure adjusting cavity (55) and a plurality of temperature sensing cavities (56) which are uniformly distributed on the periphery of the mechanism body (51), and each water guide pipeline (53) corresponds to one temperature sensing cavity (56);
flow control switch (54) is including switch separation blade (541), first piston (542) and second piston (543), be linked together through first piston pipeline between pressure regulation chamber (55) and water pipe (53), be linked together through the second piston pipeline between temperature-sensing chamber (56) and water pipe (53), first piston (542), second piston (543) set up respectively in first piston pipeline, in the second piston pipeline, it is compressible medium to fill in pressure regulation chamber (55), it is compressible temperature-sensitive medium to fill in temperature-sensing chamber (56), set up on the pipe wall of water pipe (53) removal groove (531) of separation blade (541).
2. The shot punch of claim 1 wherein: the compressible heat-sensitive medium filled in the temperature sensing cavity (56) is a liquid heat-sensitive medium or a gas heat-sensitive medium.
3. The shot punch of claim 1 wherein: the mechanism body (51) comprises a base body (511) arranged on the punch body (3) and a sealing plate fixedly arranged on the base body (511).
4. The shot punch of claim 1 wherein: one surface of the switch baffle piece (541) is tightly attached to the groove wall of the moving groove (531), and a gap (532) is reserved between the other surface and the corresponding groove wall.
5. The shot punch of claim 1 wherein: the punch shell (2) is made of beryllium copper.
6. The shot punch as defined in any one of claims 1 to 5 wherein: a water outlet flow adjusting mechanism (6) is arranged between the punch body (3) and the punch base (1), and the water outlet flow adjusting mechanism (6) and the water inlet flow adjusting mechanism (5) have the same structure.
7. The shot punch of claim 6 wherein: the punch body (3), the water inlet end flow adjusting mechanism (5) and the water outlet end flow adjusting mechanism (6) have the same outer diameter and are coaxially mounted.
8. The shot punch of claim 1 wherein: the pressure adjusting cavity (55) is a circular ring-shaped cavity, is coaxially arranged with the cooling water inlet pipe (4) and is positioned on the outer side of the cooling water inlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920145240.9U CN210080688U (en) | 2019-01-28 | 2019-01-28 | Injection punch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920145240.9U CN210080688U (en) | 2019-01-28 | 2019-01-28 | Injection punch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210080688U true CN210080688U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920145240.9U Active CN210080688U (en) | 2019-01-28 | 2019-01-28 | Injection punch |
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| Country | Link |
|---|---|
| CN (1) | CN210080688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109834240A (en) * | 2019-01-28 | 2019-06-04 | 广东省智能制造研究所 | A kind of temperature self adjusting injection punch head |
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2019
- 2019-01-28 CN CN201920145240.9U patent/CN210080688U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109834240A (en) * | 2019-01-28 | 2019-06-04 | 广东省智能制造研究所 | A kind of temperature self adjusting injection punch head |
| CN109834240B (en) * | 2019-01-28 | 2024-01-26 | 广东省智能制造研究所 | Temperature self-adjusting injection punch |
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Address after: 510070 Building No. 15, compound 100, martyrs Road, Guangzhou, Guangdong Patentee after: Institute of intelligent manufacturing, Guangdong Academy of Sciences Address before: 510070 Building No. 15, compound 100, martyrs Road, Guangzhou, Guangdong Patentee before: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING |