Injection head of die-casting machine

Abstract

The utility model discloses an injection head of a die-casting machine, which belongs to the technical field of injection heads and comprises an injection rod, an injection punch is mounted on the outer surface of the injection rod in a threaded manner, and a punch sleeve shell is mounted on the outer surface of the injection punch in a nested manner. A telescopic mechanism for separating and nesting the punch sleeve shell and the injection punch is arranged outside the injection rod, a replacement mechanism for updating the punch sleeve shell is arranged in the telescopic mechanism, and a feeding mechanism for positioning the punch sleeve shell is arranged in the telescopic mechanism. Through the arrangement of the replacing mechanism and the feeding mechanism, a taken-down punch sleeve shell can be replaced, through the design, the automatic operation process is achieved, the working efficiency is improved, the time and errors of manual operation are reduced, potential safety hazards caused by manual operation are avoided, the overall operation safety and efficiency are improved, and the production cost is reduced. And the requirement of a casting enterprise on the injection head of the die-casting machine is met.

Description

Technical Field

[0001] This utility model relates to the field of injection head technology, and in particular to an injection head for a die casting machine. Background Technology

[0002] Die casting machines are a common piece of equipment in the forming technology field of the machinery industry. They are industrial machines that use pressure to inject molten metal into a die casting mold to cool and solidify, resulting in a solid metal casting after the mold is opened. The injection head is an important component of the die casting machine. It usually makes a horizontal or vertical reciprocating motion to press the liquid metal into the die casting mold. The injection head is generally connected to the die casting mold through the die casting machine and the pressure chamber. The working end of the injection head is in contact with the high-temperature liquid metal and has a relatively high temperature.

[0003] The existing injection head working surface wears down during long-term reciprocating motion, which can cause the injection head to jam. The injection head cannot be pulled out of the die casting chamber and sticks to the molten metal. This can cause downtime or production stoppage, or even damage to the injection head and die casting chamber, requiring replacement of both. This cannot meet the needs of foundry enterprises for die casting machine injection heads and increases the casting costs of enterprises.

[0004] Therefore, there is an urgent need to provide a die-casting machine injection head to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a die-casting machine injection head.

[0006] To solve the above-mentioned technical problems, the present invention provides a die-casting machine injection head, including an injection rod, an injection punch threaded on the outer surface of the injection rod, a punch housing nested on the outer surface of the injection punch, a telescopic mechanism for separating and nesting the punch housing and the injection punch is provided outside the injection rod, a replacement mechanism for updating the punch housing is provided inside the telescopic mechanism, and a feeding mechanism for positioning the punch housing is provided inside the telescopic mechanism.

[0007] The present invention is further configured such that: the telescopic mechanism includes a tripod fixed to the outer surface of the injection rod, and a large electric telescopic rod is fixedly installed on one side of the tripod.

[0008] The above technical solution involves installing a large electric telescopic pole using a tripod, and using an injection rod to drive the injection punch and punch housing to connect with the die-casting chamber.

[0009] The present invention is further configured such that: one end of the piston rod of the large electric telescopic rod is fixedly installed with a housing, a switch door is rotatably installed on one side of the housing, and the other side of the switch door is connected to the housing by a latch.

[0010] Through the above technical solution, the large electric telescopic rod drives the outer shell to move, opening the door and allowing the punch shell inside the outer shell to be replaced.

[0011] The present invention is further configured such that: the replacement mechanism includes a rotary motor fixed to the bottom of the housing, and the output shaft of the rotary motor is fixedly connected to a rotary gear via a coupling.

[0012] The above technical solution enables a rotary motor to drive a rotary gear to rotate.

[0013] The present invention is further configured such that: a rotating disk is rotatably mounted on the inner bottom wall of the outer shell, the interior of the rotating disk is provided with a circular toothed groove, the interior of the rotating disk meshes with the outer surface of the rotating gear, and a replacement plate is fixedly mounted on one side of the rotating disk.

[0014] Through the above technical solution, the rotating gear drives the rotating disk and the replacement plate to rotate, so that the rotating disk and the replacement plate can change the position of the punch housing.

[0015] The present invention is further configured such that: the feeding mechanism includes two electric lifting rods fixed inside the outer shell, the outside of the two electric lifting rods is rotatably connected to the inside of the rotating disk, and a feeding plate is fixedly installed at one end of the piston rod of each of the two electric lifting rods.

[0016] Through the above technical solution, the two electric lifting rods can drive the feeding plate to retract and move through the electric lifting rods, thereby positioning the punch housing.

[0017] The present invention is further configured such that: a miniature electric telescopic rod is fixedly installed inside each of the two feeding plates, and a cylindrical slider is fixedly installed at one end of the piston rod of each of the two miniature electric telescopic rods.

[0018] Through the above technical solution, the miniature electric telescopic rod drives the cylindrical slider to extend.

[0019] The present invention is further configured such that: a groove is provided on the outer surface of the punch housing, and the inner surface of the groove is slidably connected to the outer surface of the cylindrical slider.

[0020] Through the above technical solution, the cylindrical slider limits the installation of the punch housing through the sliding groove.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model, by providing a replacement mechanism and a feeding mechanism, can replace the removed punch housing. This design realizes an automated operation process, improves work efficiency, reduces the time and error of manual operation, avoids safety hazards caused by manual operation, and improves the overall operational safety and efficiency.

[0023] 2. This utility model, by providing a telescopic mechanism, allows the punch housing fitted onto the injection punch to be removed, protecting the injection punch, reducing the risk of downtime and production stoppage, minimizing damage to the injection punch, meeting the needs of foundry enterprises for die-casting machine injection punches, and reducing the enterprise's casting costs. Attached Figure Description

[0024] Figure 1 This is a first-view structural diagram of the present invention;

[0025] Figure 2 This is a second-view structural diagram of the present invention;

[0026] Figure 3 This is a structural diagram of the injection rod, injection punch, and punch housing of this utility model;

[0027] Figure 4 This is a diagram showing the internal structure of the outer shell of this utility model;

[0028] Figure 5 This is an exploded structural diagram of the replacement mechanism and the feeding mechanism of this utility model;

[0029] Figure 6 for Figure 5 A partial upward-view structural diagram;

[0030] Figure 7 This is a cross-sectional view of the feeding mechanism of this utility model.

[0031] In the diagram: 1. Injection rod; 2. Injection punch; 3. Punch housing; 4. Telescopic mechanism; 401. Tripod; 402. Large electric telescopic rod; 403. Housing; 404. Opening and closing door; 5. Changing mechanism; 501. Rotary motor; 502. Rotary gear; 503. Rotary disc; 504. Changing plate; 6. Feeding mechanism; 601. Electric lifting rod; 602. Feeding plate; 603. Miniature electric telescopic rod; 604. Cylindrical slider. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0033] Please see Figures 1-7A die-casting machine injection head includes an injection rod 1, an injection punch 2 threaded onto the outer surface of the injection rod 1, a punch housing 3 nested onto the outer surface of the injection punch 2, and a telescopic mechanism 4 provided outside the injection rod 1 for separating and nesting the punch housing 3 and the injection punch 2. The telescopic mechanism 4 includes a tripod 401 fixed to the outer surface of the injection rod 1, a large electric telescopic rod 402 fixedly mounted on one side of the tripod 401, and a housing 403 fixedly mounted on one end of the piston rod of the large electric telescopic rod 402. A switch door 404 is rotatably installed on one side of the outer casing 403, and the other side of the switch door 404 is connected to the outer casing 403 by a latch. The die-casting machine drives the injection punch 2 and the punch sleeve 3 to dock with the die-casting chamber through the injection rod 1. The punch sleeve 3 can prevent the injection punch 2 from being worn during long-term reciprocating motion. After the injection punch 2 is separated from the die-casting chamber, the large electric telescopic rod 402 drives the outer casing 403 to move and open the switch door 404, so that the punch sleeve 3 inside the outer casing 403 can be replaced.

[0034] like Figures 4-6 As shown, the telescopic mechanism 4 is equipped with a replacement mechanism 5 for updating the punch housing 3. The replacement mechanism 5 includes a rotary motor 501 fixed to the bottom of the housing 403. The output shaft of the rotary motor 501 is fixedly connected to a rotary gear 502 via a coupling. A rotary disk 503 is rotatably mounted on the inner bottom wall of the housing 403. The rotary disk 503 has a circular toothed groove inside. The inside of the rotary disk 503 meshes with the outer surface of the rotary gear 502. A replacement plate 504 is fixedly mounted on one side of the rotary disk 503. The rotary motor 501 drives the rotary gear 502 to rotate. The rotary gear 502 drives the rotary disk 503 and the replacement plate 504 to rotate through the housing 403 and two electric lifting rods 601, so that the rotary disk 503 and the replacement plate 504 replace the position of the punch housing 3.

[0035] like Figures 4-7As shown, the telescopic mechanism 4 is internally equipped with a feeding mechanism 6 for positioning the punch housing 3. The feeding mechanism 6 includes two electric lifting rods 601 fixed inside the housing 403. The exterior of the two electric lifting rods 601 is rotatably connected to the interior of the rotating disk 503. A feeding plate 602 is fixedly installed at one end of the piston rod of each of the two electric lifting rods 601. A miniature electric telescopic rod 603 is fixedly installed inside each of the two feeding plates 602. A cylindrical slider 604 is fixedly installed at one end of the piston rod of each of the two miniature electric telescopic rods 603. The outer surface of the punch housing 3 is provided with a sliding groove, and the inner surface of the sliding groove is slidably connected to the outer surface of the cylindrical slider 604. The two electric lifting rods 601 can drive the feeding plate 602 to retract and move sequentially through the electric lifting rods 601, so that the old punch housing 3 falls between the replacement plates 504, and then the new punch housing 3 falls between the two electric lifting rods 601 and is fixed relative to each other. The mini electric telescopic rod 603 drives the cylindrical slider 604 to extend, and the cylindrical slider 604 limits and fixes the punch housing 3 through the sliding groove.

[0036] In use, the die-casting machine drives the injection punch 2 and punch housing 3 to dock with the die-casting chamber via the injection rod 1. The punch housing 3 prevents the injection punch 2 from wearing out during long-term reciprocating motion. After the punch housing 3 has been used a certain number of times, the injection punch 2 is separated from the die-casting chamber. The large electric telescopic rod 402 moves the outer shell 403, and the cylindrical slider 604 separates the punch housing 3 from the injection punch 2, leaving it between the two electric lifting rods 601. One electric lifting rod 601 moves the bottom loading plate 602, causing the punch housing 3 to fall between the replacement plates 504. Similarly, the bottom loading plate 602 is returned to its original position, and the other electric lifting rod 601 moves the top loading plate 602. The new punch housing 3 is positioned between the two electric lifting rods 601. Similarly, the top loading plate 602 is returned to its original position. The micro electric telescopic rod 603 drives the cylindrical slider 604 to extend. The cylindrical slider 604 limits and fixes the punch housing 3 through the sliding groove. The large electric telescopic rod 402 drives the outer shell 403 to return to its original position. The injection punch 2 drives the punch housing 3 to move. The cylindrical slider 604 limits the punch housing 3 through the sliding groove. Finally, the punch housing 3 and the injection punch 2 are docked, so that the punch housing 3 and the injection punch 2 protrude outside the outer shell 403, which is convenient for docking with the die casting chamber. The replacement of the punch housing 3 is completed. The switch door 404 is opened to update the punch housing 3 inside the outer shell 403.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A die-casting machine injection head, comprising an injection rod (1), characterized in that: The outer surface of the injection rod (1) is threaded with an injection punch (2), and the outer surface of the injection punch (2) is nested with a punch housing (3). The outside of the injection rod (1) is provided with a telescopic mechanism (4) for separating and nesting the punch housing (3) and the injection punch (2). The inside of the telescopic mechanism (4) is provided with a replacement mechanism (5) for updating the punch housing (3), and the inside of the telescopic mechanism (4) is provided with a feeding mechanism (6) for positioning the punch housing (3).

2. The die-casting machine injection head according to claim 1, characterized in that: The telescopic mechanism (4) includes a tripod (401) fixed to the outer surface of the injection rod (1), and a large electric telescopic rod (402) is fixedly installed on one side of the tripod (401).

3. The die-casting machine injection head according to claim 2, characterized in that: One end of the piston rod of the large electric telescopic rod (402) is fixedly installed with a housing (403), and a switch door (404) is rotatably installed on one side of the housing (403). The other side of the switch door (404) is connected to the housing (403) by a latch.

4. The die-casting machine injection head according to claim 3, characterized in that: The replacement mechanism (5) includes a rotary motor (501) fixed to the bottom of the housing (403), and the output shaft of the rotary motor (501) is fixedly connected to a rotary gear (502) via a coupling.

5. The die-casting machine injection head according to claim 4, characterized in that: A rotating disk (503) is rotatably mounted on the inner bottom wall of the outer casing (403). The rotating disk (503) has a circular toothed groove inside. The inside of the rotating disk (503) meshes with the outer surface of the rotating gear (502). A replacement plate (504) is fixedly mounted on one side of the rotating disk (503).

6. The die-casting machine injection head according to claim 5, characterized in that: The feeding mechanism (6) includes two electric lifting rods (601) fixed inside the outer shell (403). The outside of the two electric lifting rods (601) is rotatably connected to the inside of the rotating disk (503). One end of the piston rod of each of the two electric lifting rods (601) is fixedly installed with a feeding plate (602).

7. The die-casting machine injection head according to claim 6, characterized in that: Both of the feeding plates (602) are fixedly installed with miniature electric telescopic rods (603), and one end of the piston rod of each of the two miniature electric telescopic rods (603) is fixedly installed with a cylindrical slider (604).

8. The die-casting machine injection head according to claim 7, characterized in that: The outer surface of the punch housing (3) is provided with a sliding groove, and the inner surface of the sliding groove is slidably connected to the outer surface of the cylindrical slider (604).

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