An internally cooled combined barrel and a die-casting machine including the internally cooled combined barrel

Abstract

An internally cooled combined barrel and a die-casting machine including the same are used to solve the technical problem that it is difficult to ensure that the punch and the die-casting barrel are in a better coaxial position, which is not conducive to die-casting processing. It includes a die-casting barrel, in which a coaxial punch is slidably installed. A through hole is radially provided on each side of the punch along its radial direction. The two through holes are collinear and conduct. A butt-joint assembly is installed in the punch. Both ends of the butt-joint assembly pass through the two through holes in one-to-one correspondence, and both ends of the butt-joint assembly are used to slide and abut against the inner wall of the die-casting barrel when pushing during die-casting. The end of the punch is threadedly connected to a pressure injection rod, and the pressure injection rod is used to drive the punch to perform reciprocating linear motion. The structure of the present invention is simple and is used for die-casting and material punching.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting processing, and particularly relates to an internally cooled combined barrel and a die-casting machine including the internally cooled combined barrel. Background Art

[0002] A die-casting machine is a series of industrial casting machines that hydraulically inject molten alloy material into a mold under pressure for cooling and forming, and obtain solid metal castings after opening the mold. It is usually divided into two categories: hot-chamber die-casting machines and cold-chamber die-casting machines, and the pressure is provided by a randomly configured hydraulic system.

[0003] In the prior art, as disclosed in the utility model patent document with the authorized announcement number "CN215237734U" and the patent name "Semi-solid die-casting injection device", a semi-solid die-casting injection device is disclosed, including an injection rod, a punch, and a charging barrel. The punch is connected to the injection rod. The charging barrel is sleeved outside the injection rod and is slidably connected to the injection rod. The injection rod is provided with an oil passage and a plurality of oil outlet holes. The oil passage is used for passing lubricating oil, and the oil outlet holes are used for spraying the lubricating oil onto the inner wall of the charging barrel to lubricate the punch and the charging barrel.

[0004] In the above patent document, by using the oil passage and a plurality of oil outlet holes provided on the injection rod, the friction between the injection rod and the inner wall of the charging barrel during long-term use can be lubricated in a timely manner, thereby reducing the high-cost processing of replacing the charging barrel or the punch and improving the processing efficiency. However, in the above patent document, the punch in front of the injection rod only plays a lubricating role. When the punch pushes the liquid material into the die-casting machine, when it is necessary to drive the punch to die-cast the material by a stable external driving force, it is necessary to make the centers of the punch and the charging barrel coaxial, which is the best working state. However, in the above patent document during operation, due to the increase in the use time, it is difficult to ensure that the punch and the charging barrel are in a coaxial and better position, which is not conducive to die-casting processing. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and propose an internally cooled combined barrel to solve the technical problem that it is difficult to ensure that the punch and the die-casting barrel are in a coaxial and better position, which is not conducive to die-casting processing.

[0006] To achieve the above purpose, the embodiments of the present invention adopt the following technical solutions:

[0007] An internally cooled combined barrel, including a die-casting barrel, a coaxial punch is slidably installed in the die-casting barrel. A through hole is radially provided on each side of the punch along its radial direction. The two through holes are collinear and conduct. And a contact component is installed in the punch. The two ends of the contact component respectively pass through the two through holes in a one-to-one correspondence. And the two ends of the contact component are used to slide and abut against the inner wall of the die-casting barrel when pushing the die-casting. The end of the punch is threadedly connected with a shot sleeve, and the shot sleeve is used to drive the punch to perform reciprocating linear motion;

[0008] The contact component includes two fixed blocks, two springs and two blocking blocks. The two fixed blocks are respectively slidably arranged in the two through holes in a one-to-one correspondence. One end of each of the two springs is respectively installed on one side of the two fixed blocks. The two blocking blocks are respectively fixedly installed on the other ends of the two springs. And the fixed blocks, springs and blocking blocks all slide in the corresponding through holes. The fixed block is used to push the spring and the blocking block when pushing the die-casting, so that the blocking block slides and abuts against the inner wall of the die-casting barrel. It also includes a shot sleeve body and a first wedge-shaped block. The shot sleeve body slidably passes through the shot sleeve and is coaxial with the die-casting barrel. And one end of the shot sleeve body extends into the conduction connection between the two through holes. And this end of the shot sleeve body is used to push the first wedge-shaped block to move when pushing the die-casting. It also includes two second wedge-shaped blocks. The two second wedge-shaped blocks are respectively installed on the two fixed blocks. And the first wedge-shaped block abuts against the second wedge-shaped block.

[0009] Working principle:

[0010] In practical applications, the operator first installs the die-casting barrel in the die-casting machine, then connects the coaxial punch with the shot sleeve. Then drive the punch to slide into the die-casting barrel through the shot sleeve. When the shot sleeve drives the punch to slide into the die-casting barrel, at this time, the operator simultaneously drives the contact component in the punch through an external driving force by the shot sleeve. Then the contact component expands towards the inner wall of the die-casting barrel, so that the punch and the die-casting barrel are in the best coaxial position during processing.

[0011] The beneficial effect of the present invention is:

[0012] During processing, the operator pushes the shot sleeve, the shot sleeve drives the punch, and the shot sleeve simultaneously drives the contact component in the punch. At this time, it can make the punch and the die-casting barrel on the same axis when die-casting. Compared with the patent documents in the technical background, the present invention makes the die-casting barrel and the punch on the same axis position while the punch slides into the die-casting barrel. By this way, the processing quality can be guaranteed at the same time.

[0013] A die-casting machine, the die-casting machine includes an internally cooled combined barrel as described in claim 1.

[0014] By setting the die-casting machine with this kind of internally cooled combined barrel, the processing quality of the die-casting machine can be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0016] Figure 2 is Figure 1 an enlarged structure diagram of part A in

[0017] Figure 3 a structure diagram of two fixing blocks and the injection rod body.

[0018] Description of reference numerals: Die-casting barrel 1, punch 2, through hole 3, injection rod 4, fixing block 5, spring 6, plugging block 7, injection rod body 8, oil circuit 9, oil outlet hole 10, first snap ring 11, second snap ring 12, die-casting barrel body 13, cooling water circuit 14, surrounding plate 15, pressing plate 16, first positioning hole 17, second positioning hole 18, first feeding port 19, second feeding port 20, first wedge-shaped block 21, second wedge-shaped block 22. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0020] As Figure 1 shown, an internally cooled combined barrel includes a die-casting barrel 1. A coaxially arranged punch 2 is slidably installed in the die-casting barrel 1. A through hole 3 is radially formed on each side of the punch 2 along its radial direction. The two through holes 3 are collinear and conduct. And a contact component is installed in the punch 2. The two ends of the contact component pass through the two through holes 3 in one-to-one correspondence, and the two ends of the contact component are used to slide and contact with the inner wall of the die-casting barrel 1 when pressing and casting. The end of the punch 2 is threadedly connected with an injection rod 4, and the injection rod 4 is used to drive the punch 2 to perform reciprocating linear motion.

[0021] In practical applications, the operator first installs the die-casting barrel 1 in the die-casting machine, then threadedly connects the coaxially arranged punch 2 and the injection rod 4, and then drives the punch 2 to slide into the die-casting barrel 1 through the injection rod 4. When the injection rod 4 drives the punch 2 to slide into the die-casting barrel 1, at this time, the operator simultaneously drives the contact component in the punch 2 through an external driving force through the injection rod 4, and then the contact component expands towards the inner wall of the die-casting barrel 1, so that the punch 2 and the die-casting barrel 1 are in the best coaxial position during processing.

[0022] As Figure 1 , Figure 2 and Figure 3As shown, the abutting component includes two fixing blocks 5, two springs 6 and two plugging blocks 7. The two fixing blocks 5 are slidably arranged in two through holes 3 in one-to-one correspondence. One ends of the two springs 6 are respectively installed on one side of the two fixing blocks 5. The two plugging blocks 7 are respectively fixedly installed on the other ends of the two springs 6. The fixing blocks 5, the springs 6 and the plugging blocks 7 all slide in the corresponding through holes 3. The fixing blocks 5 are used to push the springs 6 and the plugging blocks 7 during die casting, so that the plugging blocks 7 are in sliding contact with the inner wall of the die casting cylinder 1. It also includes a plunger rod body 8 and a first wedge-shaped block 21. The plunger rod body 8 slidably penetrates through the plunger rod 4 and is coaxial with the die casting cylinder 1. One end of the plunger rod body 8 extends into the conduction connection between the two through holes 3. This end of the plunger rod body 8 is used to push the first wedge-shaped block 21 to move when pushing for die casting. It also includes two second wedge-shaped blocks 22. The two second wedge-shaped blocks 22 are respectively installed on the two fixing blocks 5, and the first wedge-shaped block 21 abuts against the second wedge-shaped blocks 22.

[0023] When the punch 2 slides and works in the die casting cylinder 1, the operator drives the first wedge-shaped block 21 through the plunger rod body 8. The first wedge-shaped block 21 drives the two second wedge-shaped blocks 22. The two second wedge-shaped blocks 22 respectively drive the two fixing blocks 5. The two fixing blocks 5 respectively drive the two springs 6. The two springs 6 respectively drive the two plugging blocks 7. The two plugging blocks 7 support against the inner wall of the die casting cylinder 1. In this way, the punch 2 can be on the same axis during processing in the die casting cylinder 1, improving the processing quality.

[0024] As Figure 1 shown, it also includes two oil channels 9. The two oil channels 9 are both opened in the punch 2. The oil outlet holes 10 at the ends of the two oil channels 9 correspond to the two plugging blocks 7 in one-to-one correspondence. The two oil outlet holes 10 are both opened at the part away from the stamping of the punch 2.

[0025] When it is necessary to lubricate the punch 2 during processing, the operator pushes the abutting component to make a reciprocating linear motion in the die casting cylinder 1 through the plunger rod body 8. Every time the punch 2 pushes the material inward for die casting processing, the plunger rod body 8 will drive the abutting component to slide and connect to the inner wall of the die casting cylinder 1. At the same time, the plunger rod 4 also drives the lubricating oil to burst out from the two oil channels 9. And when the abutting component abuts against the inner wall of the die casting cylinder 1, the two oil outlet holes 10 can release the lubricating oil, enabling the punch 2 to reduce friction with the die casting cylinder 1 through the lubricating oil during die casting.

[0026] As Figure 1 shown, it also includes a first snap ring 11 and a second snap ring 12. The first snap ring 11 and the second snap ring 12 are installed around the punch 2 in a ring shape. The first snap ring 11 and the second snap ring 12 are in sliding contact with the inner wall of the die casting cylinder 1.

[0027] When the punch 2 needs to be further stabilized and at the same time slidably abuts against the inner wall of the die-casting barrel 1, the first snap ring 11 and the second snap ring 12 are simultaneously arranged around the punch 2. In this way, the abutment between the punch 2 and the inner wall of the die-casting barrel 1 is increased, and at the same time, the coaxiality between the punch 2 and the die-casting barrel 1 is increased.

[0028] As Figure 1 shown, it further includes a die-casting barrel body 13. The die-casting barrel body 13 is threadedly connected inside the die-casting barrel 1 and the two are coaxial. A cooling water channel 14 is evenly arranged around the die-casting barrel body 13 in a circular manner. Two semi-circular enclosing plates 15 are installed outside the cooling water channel 14. It further includes a pressing plate 16. The pressing plate 16 is installed at one end of the die-casting barrel body 13, and two first positioning holes 17 are opened on the pressing plate 16. Two second positioning holes 18 are opened on one side of the die-casting barrel body 13, and the two first positioning holes 17 and the two second positioning holes 18 penetrate each other in a one-to-one correspondence. A first feeding port 19 is opened on the side wall at one end of the die-casting barrel 1. A second feeding port 20 is opened on the die-casting barrel body 13, and the second feeding port 20 corresponds to the first feeding port 19.

[0029] When an operator needs to cool the die-casting barrel body 13, coolant is injected into the cooling water channel 14 on the die-casting barrel body 13, and then two semi-circular and heat-resistant enclosing plates 15 are wrapped around the cooling water channel 14. In this way, while the die-casting barrel body 13 is cooled, the inner wall of the die-casting barrel 1 is prevented from being damaged due to the high temperature of the molten metal. And when the die-casting barrel body 13 is damaged, it can be replaced, reducing the processing cost. And the second feeding port 20 on the die-casting barrel 1 communicates with the first feeding port 19 on the die-casting barrel 1, preventing the high-temperature molten metal from directly contacting the die-casting barrel 1. When further fixing the die-casting barrel 1 and the die-casting barrel body 13, the second positioning hole 18 on the die-casting barrel body 13 and the first positioning hole 17 on the pressing plate 16 installed on one side of the die-casting barrel 1 are screwed together. In this way, the situation that the die-casting barrel body 13 is displaced during processing can be prevented, thereby improving the processing quality and efficiency.

[0030] A die-casting machine, the die-casting machine includes an internally cooled combined barrel.

[0031] Working principle:

[0032] When it is necessary to keep the punch 2 and the die-casting barrel body 13 on the same axis during die-casting processing, the operator drives the injection rod 4 through an external driving force. The injection rod 4 drives the punch 2 to perform a reciprocating linear motion into the die-casting barrel body 13. At the same time, when pushing the injection rod 4, the injection rod body 8 is also driven. At this time, the injection rod body 8 drives the first wedge-shaped block 21 to move, and the first wedge-shaped block 21 drives the two second wedge-shaped blocks 22 to move. The two second wedge-shaped blocks 22 respectively drive the two fixed blocks 5 one by one. The two fixed blocks 5 respectively drive the two springs 6, and the two springs 6 respectively drive the two plugging blocks 7. The two plugging blocks 7 support on the inner wall of the die-casting barrel 1. When the plugging blocks 7 slide and support on the inner wall of the die-casting barrel body 13, the injection rod 4 drives the lubricating oil in the two oil passages 9. When the two plugging blocks 7 drive the punch 2 to slide and are on the same axis as the die-casting barrel body 13, then, the lubricating oil is also released from the two oil outlet holes 10. At this time, while the punch 2 and the die-casting barrel body 13 are on the same axis, the lubricating oil for lubricating the surface of the punch 2 during the reciprocating linear processing motion is also released.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An internally cooled combined barrel, comprising a die-casting barrel (1), characterized in that, A punch (2) coaxial with the die-casting barrel (1) is slidably installed inside the die-casting barrel (1). A through hole (3) is radially formed on each side of the punch (2) along its radial direction. The two through holes (3) are collinear and conduct. An abutting component is installed inside the punch (2). The two ends of the abutting component respectively pass through the two through holes (3) in a one-to-one correspondence. The two ends of the abutting component are used to slidably abut against the inner wall of the die-casting barrel (1) when die-casting is pushed. The end of the punch (2) is threadedly connected with a injection rod (4), and the injection rod (4) is used to drive the punch (2) to perform a reciprocating linear motion; The abutting component includes two fixing blocks (5), two springs (6) and two blocking blocks (7). The two fixing blocks (5) are respectively slidably arranged in the two through holes (3) in a one-to-one correspondence. One end of each of the two springs (6) is respectively installed on one side of the two fixing blocks (5). The two blocking blocks (7) are respectively fixedly installed on the other ends of the two springs (6). The fixing blocks (5), the springs (6) and the blocking blocks (7) all slide in the corresponding through holes (3). The fixing blocks (5) are used to push the springs (6) and the blocking blocks (7) when die-casting is pushed, so that the blocking blocks (7) slidably abut against the inner wall of the die-casting barrel (1). It also includes an injection rod body (8) and a first wedge-shaped block (21). The injection rod body (8) slidably penetrates through the injection rod (4) and is coaxial with the die-casting barrel (1). One end of the injection rod body (8) extends into the conduction connection between the two through holes (3), and this end of the injection rod body (8) is used to push the first wedge-shaped block (21) to move when die-casting is pushed. It also includes two second wedge-shaped blocks (22). The two second wedge-shaped blocks (22) are respectively installed on the two fixing blocks (5), and the first wedge-shaped block (21) abuts against the second wedge-shaped blocks (22).

2. The internally cooled combined barrel according to claim 1, characterized in that: It also includes two oil circuits (9). The two oil circuits (9) are both formed inside the punch (2). The oil outlet holes (10) at the ends of the two oil circuits (9) respectively correspond to the two blocking blocks (7) in a one-to-one correspondence. The two oil outlet holes (10) are both formed at the part away from the stamping of the punch (2).

3. The internally cooled combined barrel according to claim 1, characterized in that: It also includes a first snap ring (11) and a second snap ring (12). The first snap ring (11) and the second snap ring (12) are installed around the punch (2). The first snap ring (11) and the second snap ring (12) slidably abut against the inner wall of the die-casting barrel (1).

4. The internally cooled combined barrel according to claim 1, characterized in that: It also includes a die-casting barrel body (13). The die-casting barrel body (13) is slidably and rotatably connected inside the die-casting barrel (1). A cooling water circuit (14) is evenly arranged around the die-casting barrel body (13). Two semi-circular enclosing plates (15) are installed outside the cooling water circuit (14).

5. The internally cooled combined barrel according to claim 4, characterized in that: It also includes a pressing plate (16). The pressing plate (16) is installed at one end of the die-casting barrel body (13). Two first positioning holes (17) are formed on the pressing plate (16). Two second positioning holes (18) are formed on one side of the die-casting barrel body (13). The two first positioning holes (17) and the two second positioning holes (18) are mutually communicated in a one-to-one correspondence.

6. The internally cooled combined barrel according to claim 4, characterized in that: A first charging port (19) is formed in a side wall at one end of the die-casting barrel (1), and a second charging port (20) is formed in the die-casting barrel body (13), and the second charging port (20) corresponds to the first charging port (19).

7. A die-casting machine, characterized in that: The die-casting machine comprises an internally cooled combined barrel as described in claim 1.

Images