Efficient clamp for internal and external quenching of injection rod

Abstract

The efficient clamp comprises a fixing plate of a square structure, a connecting block is arranged in the fixing plate, a main clamping block is fixedly installed at the bottom of the connecting block, and the main clamping block is used for clamping a vertically-placed injection rod body. The connecting block is fixedly installed on the movable end of a telescopic air cylinder fixedly installed on the upper surface of the fixing plate, and the connecting block and a guide sliding groove formed in the fixing plate slide in a penetrating mode. A preheating pipeline used for being inserted into the injection rod body is arranged below the fixing plate, and the whole preheating pipeline is of a spiral structure. A connecting rod is rotationally installed on the side face of the main clamping block. According to the efficient clamp for internal and external quenching of the injection rod, oil liquid in the oil storage tank circularly flows in the preheating pipeline through the connecting pipeline by utilizing the conveying pump, and heat of the oil liquid is utilized to preheat the interior of the injection rod main body through the preheating pipeline (the temperature of the oil liquid comes from heat of previous quenching).

Description

Technical Field

[0001] This utility model relates to the field of metal quenching technology, specifically to a high-efficiency fixture for internal and external quenching of injection rods. Background Technology

[0002] The injection rod is a core component of the die casting machine. It is mainly used to inject molten metal (such as aluminum, zinc, magnesium alloys, etc.) into the mold cavity under high pressure and high speed. Since the injection rod needs to withstand a large pressure during use, it needs to be quenched during its production process to improve its overall strength.

[0003] In the prior art, Chinese patent application number CN202310102181.8 discloses a dual-station quenching fixture. With the cooperation of an extended quenching inductor, two fixtures are installed simultaneously in the direction of the extended inductor rod, which can realize the function of processing two products at the same time. Without changing the quenching parameters, two products can be processed at the same time, doubling the capacity of a quenching machine. Through the action of the threaded fixing block fixedly connected to the inner side of the connecting block, the threaded rod drives the inner fixedly connected limiting block to slide into the inner wall of the limiting groove on both sides of the fixing block, limiting the connection of the dual-station fixture. A return spring is fixedly connected to the bottom of the limiting frame, which is hinged to the fixing plate fixedly connected to the bottom of the limiting spring.

[0004] Based on the above information, it can be seen that in the existing technology, the workpiece is generally clamped and heated. However, in actual use, the injection rod has a hollow structure and needs to be quenched inside and out at the same time. During heating, the inside is heated slower than the outside, resulting in uneven heating of the whole. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency fixture for internal and external quenching of injection rods, so as to solve the problem of uneven internal and external heating during quenching mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency fixture for internal and external quenching of an injection rod, comprising a square-shaped fixed plate, a connecting block disposed inside the fixed plate, and a main clamping block fixedly installed at the bottom of the connecting block, the main clamping block being used to clamp a vertically placed injection rod body, the connecting block being fixedly installed to the movable end of a telescopic cylinder fixedly installed on the upper surface of the fixed plate, and the connecting block slidingly penetratingly sliding with a guide groove opened inside the fixed plate; a preheating pipe for inserting into the injection rod body is disposed below the fixed plate, and the preheating pipe is configured as a spiral structure; a connecting rod is rotatably mounted on the side of the main clamping block, and an auxiliary clamping block is fixedly installed at the bottom end of the connecting rod.

[0007] Preferably, an oil storage tank containing oil is fixedly installed at the middle position of the upper surface of the fixed plate, and a docking column for docking with the robotic arm is fixedly installed on the upper surface of the oil storage tank.

[0008] Preferably, a delivery pump connected to the front surface of the oil storage tank is fixedly installed, and a connecting pipe is fixedly installed at the front end of the delivery pump.

[0009] Preferably, the connecting pipe and the preheating pipe are fixedly installed and connected, and the delivery pump is configured as a high-temperature oil pump.

[0010] Preferably, a limiting block is fixedly installed on the inner surface of the main clamping block, and a ceramic anti-slip pad is provided on the outer surface of the limiting block.

[0011] Preferably, an extrusion plate that rotates synchronously with the upper end of the connecting rod is fixedly installed, and the included angle between the extrusion plate and the connecting rod is 135°.

[0012] Preferably, a connecting spring is fixedly installed between the extrusion plate and the connecting block, and the upper end of the extrusion plate is pressed against the contact plate fixedly installed on the lower surface of the fixed plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the high-efficiency fixture for internal and external quenching of injection rods adopts a novel structural design, the specific details of which are as follows:

[0014] 1. The connecting blocks are pushed by the telescopic cylinder, so that the connecting blocks at both ends move to the middle to hold the main body of the injection rod. Then the main body of the injection rod is placed into the heating device (such as a heating furnace), and the purpose of quenching is achieved by heating and then oil quenching.

[0015] Furthermore, the oil in the storage tank is circulated through the preheating pipe via a transfer pump. The heat of the oil is used to preheat the interior of the injection rod body (the temperature of the oil comes from the heat during the previous quenching). An insulation layer structure is installed inside the storage tank.

[0016] 2. When the main clamping block holds the main body of the injection rod, the limiting block inside the main clamping block contacts the surface of the main body of the injection rod. At this time, the anti-slip pad outside the limiting block (the surface of the anti-slip pad has a rough structure) is used to achieve the purpose of anti-slip. At the same time, the auxiliary clamping block below clamps the main body of the injection rod. The forced limiting of the injection rod prevents the main body of the injection rod from deforming during the quenching process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main clamping block structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the preheating pipe structure of this utility model;

[0020] Figure 4 This is a schematic diagram showing the connection between the preheating pipe and the oil storage tank of this utility model;

[0021] Figure 5 This is a schematic diagram of the auxiliary clamping block structure of this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Fixed plate; 2. Connecting block; 3. Main clamping block; 4. Telescopic cylinder; 5. Guide slide; 6. Oil tank; 7. Delivery pump; 8. Connecting column; 9. Connecting pipe; 10. Preheating pipe; 11. Limiting block; 12. Anti-slip pad; 13. Connecting rod; 14. Auxiliary clamping block; 15. Extrusion plate; 16. Connecting spring; 17. Contact plate; 18. Main body of the injection rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-2 In order to achieve the purpose of clamping the main body 18 of the injection rod, this embodiment provides the following technical solution, which specifically discloses: a fixed plate 1 with a square structure, a connecting block 2 is provided inside the fixed plate 1, and a main clamping block 3 is fixedly installed at the bottom of the connecting block 2. The main clamping block 3 is used to clamp the vertically placed main body 18 of the injection rod. The connecting block 2 is fixedly installed with the movable end of the telescopic cylinder 4 fixedly installed on the upper surface of the fixed plate 1, and the connecting block 2 slides through the guide groove 5 opened inside the fixed plate 1. A limiting block 11 is fixedly installed on the inner surface of the main clamping block 3, and a ceramic anti-slip pad 12 is provided on the outer surface of the limiting block 11.

[0026] When using the device, first connect the docking column 8 to the operating robotic arm. Then, move the device to the position of the injection rod body 18 using the robotic arm. Next, activate the telescopic cylinder 4. Use the telescopic cylinder 4 to push the connecting block 2 to slide in the guide groove 5. At this time, the connecting block 2 drives the main clamping block 3 below it to move to the middle position, so that the main clamping block 3 moves to the position of clamping the injection rod body 18. At this time, the limiting block 11 on the inner side of the main clamping block 3 contacts the surface of the injection rod body 18. The anti-slip pad 12 on the outer surface of the limiting block 11 is used to achieve the purpose of anti-slip. Then, move the injection rod body 18 to the heating device using the robotic arm. After heating, move the injection rod body 18 to the cooling medium (such as water or oil) to achieve the purpose of quenching.

[0027] Example 2: Please refer to Figures 3-4 In order to achieve the purpose of preheating the inner wall of the injection rod body 18, this embodiment provides the following technical solution, which specifically discloses: a preheating pipe 10 for inserting into the injection rod body 18 is provided below the fixing plate 1, and the preheating pipe 10 is configured as a spiral structure. An oil storage tank 6 storing oil is fixedly installed at the middle position of the upper surface of the fixing plate 1, and a docking column 8 for docking with the robotic arm is fixedly installed on the upper surface of the oil storage tank 6. A delivery pump 7 communicating with the oil storage tank 6 is fixedly installed on the front side surface of the oil storage tank 6, and a connecting pipe 9 is fixedly installed at the front end of the delivery pump 7. The connecting pipe 9 is fixedly installed with the preheating pipe 10, and the connecting pipe 9 is connected to the preheating pipe 10. The delivery pump 7 is configured as a high-temperature oil pump.

[0028] During the quenching process, the delivery pump 7 on the front side of the oil storage tank 6 is turned on. The delivery pump 7 is used to transport the oil in the oil storage tank 6 to the preheating pipe 10 through the connecting pipe 9 for circulation. The preheating pipe 10 is used to preheat the inner wall of the injection rod body 18, so that the inner and outer sides of the injection rod body 18 can be heated as synchronously as possible in the subsequent heating process. In addition, the heat is used to heat the oil at the same time during heating, ensuring the subsequent preheating effect of the oil.

[0029] Example 3: Please refer to Figures 5-6 In order to prevent deformation during the quenching process, this embodiment provides the following technical solution, which specifically discloses: a connecting rod 13 is rotatably installed on the side of the main clamping block 3, and an auxiliary clamping block 14 is fixedly installed at the bottom of the connecting rod 13. A pressing plate 15 that rotates synchronously with the connecting rod 13 is fixedly installed at the upper end of the connecting rod 13, and the included angle between the pressing plate 15 and the connecting rod 13 is 135°. A connecting spring 16 is fixedly installed between the pressing plate 15 and the connecting block 2, and the upper end of the pressing plate 15 is pressed against the contact plate 17 fixedly installed on the lower surface of the fixed plate 1.

[0030] When the main clamping block 3 moves to clamp the injection rod body 18, the extrusion plate 15 gradually disengages from the pressure between itself and the contact plate 17. At this time, under the elastic extrusion action of the connecting spring 16, the extrusion plate 15 drives the connecting rod 13 to rotate, thereby causing the connecting rod 13 to drive the auxiliary clamping block 14 to clamp the injection rod body 18 (using the forced limiting effect of the auxiliary clamping block 14 to prevent the injection rod body 18 from deforming during the quenching process). Conversely, the auxiliary clamping block 14 releases the clamping and limiting effect on the injection rod body 18.

[0031] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency clamp for the inner and outer quenching of a plunger rod, comprising a fixed plate (1) in a square structure, a connecting block (2) is arranged inside the fixed plate (1), and a main clamp block (3) is fixedly installed at the bottom of the connecting block (2), characterized in that, Also includes: The main clamping block (3) is used to clamp the vertically placed injection rod body (18). The connecting block (2) is fixedly installed with the movable end of the telescopic cylinder (4) fixedly installed on the upper surface of the fixed plate (1). The connecting block (2) slides through the guide groove (5) opened inside the fixed plate (1). Below the fixing plate (1), a preheating pipe (10) is provided for inserting into the body of the injection rod (18), and the preheating pipe (10) is configured as a spiral structure. The main clamping block (3) is rotatably mounted on the side of the connecting rod (13), and the bottom end of the connecting rod (13) is fixedly mounted on the auxiliary clamping block (14).

2. A high efficiency fixture for inner and outer quenching of a plunger rod as claimed in claim 1, wherein: An oil storage tank (6) containing oil is fixedly installed at the middle position of the upper surface of the fixed plate (1), and a docking column (8) for docking with the robotic arm is fixedly installed on the upper surface of the oil storage tank (6).

3. A high efficiency fixture for inner and outer quenching of a plunger rod as claimed in claim 2, wherein: The oil storage tank (6) is fixedly installed on the front surface of the tank and connected to it, and the front end of the pump (7) is fixedly installed with a connecting pipe (9).

4. A high efficiency fixture for inner and outer quenching of a plunger rod as claimed in claim 3, wherein: The connecting pipe (9) is fixedly installed with the preheating pipe (10), and the connecting pipe (9) and the preheating pipe (10) are connected. The delivery pump (7) is set as a high-temperature oil pump.

5. A high efficiency fixture for inner and outer quenching of a plunger rod as defined in claim 1, wherein: The inner surface of the main clamping block (3) is fixedly installed with a limiting block (11), and the outer surface of the limiting block (11) is provided with a ceramic anti-slip pad (12).

6. A high efficiency fixture for internal and external quenching of a plunger rod as defined in claim 1, wherein: The upper end of the connecting rod (13) is fixedly installed with an extrusion plate (15) that rotates synchronously with it, and the included angle between the extrusion plate (15) and the connecting rod (13) is 135°.

7. A high efficiency fixture for internal and external quenching of a plunger rod as defined in claim 6, wherein: A connecting spring (16) is fixedly installed between the extrusion plate (15) and the connecting block (2), and the upper end of the extrusion plate (15) is pressed against the contact plate (17) fixedly installed on the lower surface of the fixed plate (1).

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