Extrusion rod lift and movement device

Abstract

This utility model relates to the field of aluminum extrusion press equipment, particularly to the field of short-stroke forward extrusion press equipment. Specifically, it relates to an extrusion rod lifting and moving device, which utilizes a positioning pad and a wedge-shaped guide connection at the rear end of the extrusion rod to achieve rapid slider positioning. The structure is simpler, and the center positioning is accurate, allowing for long-term use without adjustment and improving production efficiency. It includes a moving beam and an extrusion rod. The extrusion rod passes through the center of the front of the slider from front to back and is fixedly connected to the slider. The rear end of the extrusion rod extends beyond the back of the slider. A positioning pad is provided in the guide groove at the center of the moving beam. The front side of the positioning pad has a first inclined surface that gradually slopes forward from top to bottom. The rear end of the extrusion rod has a second inclined surface that mates with the first inclined surface. When the slider descends and the first inclined surface connects with the second inclined surface in a wedge-shaped guide connection, the positioning pad presses the extrusion rod forward.

Description

Technical Field

[0001] This utility model relates to the field of aluminum extrusion press equipment, and in particular to the field of short-stroke forward extrusion press equipment, specifically to an extrusion rod lifting and moving device. Background Technology

[0002] An extrusion press is the main equipment for metal extrusion processing. It is an important method of forming metal using plastic pressure, capable of processing metal ingots into tubes, bars, and profiles in a single operation in an instant. Almost no other method can replace the extrusion processing method of an extrusion press. Therefore, it is widely used in industrial production.

[0003] Aluminum alloy extrusion molding is widely used in new energy vehicles, consumer electronics (such as mobile phone frames), and precision heat sinks. As products become lighter, thinner, and more precise, the advantages of short-stroke extruders are becoming increasingly apparent. 1. Short-stroke extruders have shorter idle strokes, reducing single-cycle time by more than 30%; 2. The extrusion press has a short stroke, resulting in lower cumulative error and a high pass rate for forming thin-walled aluminum parts (such as 0.5mm thick heat sink fins).

[0004] There is a significant market demand for efficient, energy-saving, and high-precision short-stroke extrusion presses. The movable pressure bar device equipped on a short-stroke extrusion press is a crucial component. Hydraulic systems experience energy losses as high as 40% during frequent start-stop cycles in short strokes; therefore, a stable and precise movable pressure bar device is essential for producing precision products. Existing movable pressure bar devices on the market are divided into left-right moving and up-down moving types. Left-right moving pressure bar devices are mostly driven by servo motors (such as the design in patent CN221453867 U), while up-down moving pressure bar devices are mostly driven by hydraulic cylinders; each has its advantages. Among these, the left-right moving extrusion press is more commonly used. Its moving beam has a guide groove on its front end face, within which a slider for a reciprocating moving rod is installed. An extrusion rod is mounted on the front end face of the slider. As the moving beam moves forward, the extrusion rod extrudes the heated aluminum rod, which is then die-extruded into shape. However, this equipment has the following drawbacks: 1. Because the moving beam moves back and forth, the extrusion rod needs to press forward. Therefore, the clearance between the slider and the guide groove in the front-to-back direction is relatively large. When performing the extrusion operation, the extrusion rod must be aligned with the center of the moving beam. Therefore, multiple hydraulic cylinders need to be installed on the moving beam. The hydraulic cylinders press the slider from back to front, and the extrusion rod presses it forward to fix it. Since the slider needs to move every time it moves back and forth, the hydraulic cylinder pressing the slider increases the operation time of one cycle, resulting in low work efficiency. 2. The movement of the slider is generally controlled by the lifting hydraulic cylinder, which is often installed on the moving beam. As the moving beam moves back and forth, when the moving beam moves forward, it will be close to the heat source of the extruder. The lifting hydraulic cylinder is affected by the heat source and is prone to failure, increasing maintenance costs. Utility Model Content

[0005] This utility model provides a pressing rod lifting and moving device, which solves at least one problem in the background technology. By using the wedge-shaped guide connection between the positioning pad and the rear end of the pressing rod, the slider can be quickly positioned. The structure is simpler and the center positioning is accurate. It can be used for a long time without adjustment, thus improving production efficiency.

[0006] This utility model is achieved through the following technical solution: A pressing rod lifting and moving device includes a movable beam and a pressing rod. The front end face of the movable beam is provided with vertically distributed guide grooves, and a slider that moves up and down is assembled in the guide grooves. The extrusion rod passes through the center of the front of the slider from front to back and is fixedly connected to the slider. The rear end of the extrusion rod extends out of the back of the slider. A positioning pad is provided in the guide groove at the center of the moving beam. The front end face of the positioning pad protrudes from the surface of the guide groove. The upper edge of the front side of the positioning pad is a first inclined surface that gradually slopes forward from top to bottom. The rear end edge of the extrusion rod is provided with a second inclined surface that cooperates with the first inclined surface of the extrusion rod. When the slider descends and the first inclined surface engages with the wedge-shaped guide of the second inclined surface, the positioning pad presses the extrusion rod forward.

[0007] Furthermore, the positioning pad has a circular structure, and the diameter of the positioning pad is larger than the diameter of the extrusion rod. The positioning pad is detachably fixed in the guide groove.

[0008] Furthermore, the guide groove has a C-shaped cross-section, and pressure plates that limit the front of the slider are respectively provided on the left and right sides of the guide groove.

[0009] Furthermore, a sliding plate is installed on the rear side and the left and right sides of the guide groove, and the sliding plate is a self-lubricating copper plate.

[0010] Furthermore, the top surface of the slider is provided with a connector, and a lifting bracket is fixed at a position on the sleeve of the extruder away from the heat source of the extruder. A lifting cylinder is installed on the lifting bracket, and the lifting end of the lifting cylinder faces downward and is connected to a lifting component. The front side of the lifting component is provided with connecting grooves that extend forward and backward, and the connector is inserted into the connecting grooves from front to back.

[0011] Furthermore, the connector is a T-shaped component, and the connecting groove is a T-shaped groove.

[0012] Furthermore, the lifting cylinder is a hydraulic cylinder, and the top surface of the lifting component is provided with a guide rod, which is slidably connected to the lifting bracket.

[0013] Furthermore, the extrusion rod has a hollow cavity, and the center of gravity of the extrusion rod and the slider is located directly below the connector.

[0014] The beneficial effects achieved by this utility model compared with the prior art are as follows: 1. When the slider descends and the first inclined surface connects with the wedge-shaped guide of the second inclined surface, the positioning pad presses the extrusion rod forward, thereby realizing the rapid positioning of the slider and the extrusion rod. Compared with the previous method that required the additional design of a hydraulic cylinder for pressing and fixing, the structure of this utility model is simpler and the center positioning is accurate. It can be used for a long time without adjustment. 2. A connector is provided on the top surface of the slider. A lifting bracket is fixed at a position on the sleeve of the extruder away from the heat source of the extruder. A lifting cylinder is installed on the lifting bracket. The lifting end of the lifting cylinder faces downward and is connected to a lifting component. The front side of the lifting component has connecting grooves extending forward and backward. The connector is inserted into the connecting groove from front to back. With this design, when the moving beam moves forward and approaches the heat source, the connector disengages from the lifting component. When the moving beam moves backward and resets, the connector re-inserts into the connecting groove of the lifting component. The lifting cylinder controls the slider's lifting and lowering through the lifting component, which facilitates filling and avoids the problem of increased maintenance costs caused by the previous requirement for the hydraulic cylinder to be close to the heat source. 3. The positioning pad is detachably fixed in the guide groove, which facilitates the replacement of the positioning pad for maintenance; 4. Slide plates are installed on the rear side and the left and right sides of the guide groove. The slide plates are self-lubricating copper plates. When the slider moves up and down, they can reduce the friction of the slider and reduce the wear of the parts. 5. The extrusion rod has a hollow cavity, and the center of gravity of the extrusion rod and the slider is located directly below the connecting piece, thereby stabilizing the center of gravity and preventing the slider from shifting when it is lifted and lowered, thus reducing frictional resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the extrusion rod lifting and moving device of this utility model; Figure 2 This is a schematic diagram of the inside of the limiting groove of the moving beam described in this utility model; Figure 3 This is a schematic diagram showing the connection state between the connector and the lifting component described in this utility model; Figure 4 This is a schematic diagram showing the connector and lifting member in their separated state according to this utility model; Figure 5 This is a schematic diagram showing the fit between the extrusion rod and the positioning pad; Figure 6 for Figure 5 Enlarged view of a portion of the image; Figure 7 This is a schematic diagram showing the fixing of the extrusion rod and the slider; In the figure: 1. Moving beam, 2. Extrusion rod, 21. Second inclined surface, 3. Slider, 4. Positioning pad, 41. First inclined surface, 5. Pressure plate, 6. Slide plate, 7. Connector, 8. Lifting bracket, 9. Lifting cylinder, 10. Lifting component, 11. Guide rod. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0017] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the 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. Therefore, they should not be construed as limitations on the utility model.

[0018] like Figure 1-2 As shown, this embodiment discloses a pressing rod lifting and moving device, mainly including a moving beam 1, a pressing rod 2, a slider 3, a connecting piece 7, a lifting bracket 8, and a lifting cylinder 9. Vertically distributed guide grooves are machined on the front end face of the moving beam 1. The cross-section of the guide grooves is C-shaped. Pressure plates 5 are bolted to the left and right sides of the guide grooves, respectively. Slide plates 6 are installed on the rear side and both left and right sides within the guide grooves. The slide plates 6 can be made of self-lubricating copper plates. The slider 3 is assembled into the guide groove, and the pressure plates 5 can limit the front of the slider 3, thereby allowing the slider 3 to move up and down within the guide groove.

[0019] like Figure 5-7 As shown, the extrusion rod 2 passes through the center of the front of the slider 3 from front to back and is fixedly connected to the slider 3. The rear end of the extrusion rod 2 extends out of the back of the slider 3. A positioning pad 4 is bolted to the center of the moving beam 1 in the guide groove. The positioning pad 4 has a circular structure and its diameter is larger than that of the extrusion rod 2. The front end of the positioning pad 4 protrudes from the surface of the guide groove. The upper edge of the front side of the positioning pad 4 has a first inclined surface 41 that gradually slopes forward from top to bottom. The rear end of the extrusion rod 2 has a second inclined surface 21 that cooperates with the first inclined surface 41, with the inclination direction opposite. When the slider 3 descends and the first inclined surface 41 and the second inclined surface 21 are wedge-shaped and connected, the positioning pad 4 presses the extrusion rod 2 forward.

[0020] A connector 7 is installed on the top surface of the slider 3. A lifting bracket 8 is fixed at a position on the sleeve of the extruder away from the heat source of the extruder. A lifting cylinder 9 is installed on the lifting bracket 8, with the lifting end of the lifting cylinder 9 facing downwards and connected to a lifting member 10. A connecting groove extending forward and backward is machined on the front side of the lifting member 10, and the connector 7 is inserted into the connecting groove from front to back. In this embodiment, the connector 7 is a T-shaped part, and the connecting groove is a T-slot. To facilitate stable lifting and lowering of the lifting member 10, two guide rods 11 are installed on the top surface of the lifting member 10, and the guide rods 11 are slidably connected to the lifting bracket 8. Since the position of the lifting bracket 8 is far from the heat source, a hydraulic cylinder can be used for the lifting cylinder.

[0021] When the slider 3 and the extrusion rod 2 move up and down, it is necessary to ensure the stability of the center of gravity and avoid excessive wear. Therefore, without affecting the strength of the extrusion rod, a hollow cavity is set in the extrusion rod 2 so that the center of gravity of the extrusion rod 2 and the slider 3 is located directly below the connecting piece 7.

[0022] The movement process of the extrusion rod lifting and moving device described in this embodiment is as follows: ①For example Figure 3 As shown, when the lifting cylinder lifts the slider connected to the extrusion rod to the upper position through the lifting component, the extrusion machine feeding mechanism feeds the aluminum rod to be processed into the extrusion machine; ② The lifting cylinder controls the slider and the extrusion rod to move downwards. When the slider descends and the first inclined surface connects with the wedge-shaped guide of the second inclined surface, the positioning pad presses the extrusion rod forward, thereby realizing the rapid positioning of the slider and the extrusion rod, so that the extrusion rod is coaxial with the extrusion center position. ③ For example Figure 4 As shown, the moving beam advances, the connecting block disengages from the lifting component, and as the slider and extrusion rod advance with the moving beam, the aluminum rod begins to be extruded; ④ Once extrusion is complete, the slider and extrusion rod retract with the moving beam and are connected together via the connecting piece and the lifting piece; ⑤ The lifting cylinder lifts the slider connected to the extrusion rod to the upper position through the lifting component, and repeats the above steps.

[0023] Compared with the previous design that required additional hydraulic cylinders for top pressure fixation, the structure of this utility model is simpler and the center positioning is more accurate. It can be used for a long time without adjustment and can save 4-6 seconds in one cycle.

Claims

1. A pressing rod lifting and moving device, comprising a moving beam (1) and a pressing rod (2), wherein the front end face of the moving beam (1) is provided with vertically distributed guide grooves, and a sliding block (3) that moves up and down is assembled in the guide grooves. Its features are, The extrusion rod (2) passes through the center of the front of the slider (3) from front to back and is fixedly connected to the slider (3). The rear end of the extrusion rod (2) extends out of the back of the slider (3). A positioning pad (4) is provided in the guide groove at the center of the moving beam (1). The front end face of the positioning pad (4) protrudes from the surface of the guide groove. The upper edge of the front side of the positioning pad is a first inclined surface that gradually slopes forward from top to bottom. The rear end edge of the extrusion rod (2) is provided with a second inclined surface that cooperates with the first inclined surface of the extrusion rod (2). When the slider (3) descends and the first inclined surface connects with the wedge-shaped guide of the second inclined surface, the positioning pad (4) presses the extrusion rod (2) forward.

2. The extrusion rod lifting and moving device according to claim 1, characterized in that, The positioning pad (4) has a circular structure and the diameter of the positioning pad (4) is larger than the diameter of the extrusion rod (2). The positioning pad (4) is detachably fixed in the guide groove.

3. The extrusion rod lifting and moving device according to claim 1, characterized in that, The guide groove has a C-shaped cross-section, and pressure plates (5) that can limit the front of the slider (3) are respectively provided on the left and right sides of the guide groove.

4. The extrusion rod lifting and moving device according to claim 3, characterized in that, The guide groove is equipped with a sliding plate (6) on the rear side and the left and right sides. The sliding plate (6) is a self-lubricating copper plate.

5. The extrusion rod lifting and moving device according to claim 1, characterized in that, The top surface of the slider (3) is provided with a connector (7). A lifting bracket (8) is fixed at a position away from the heat source of the extruder sleeve. A lifting cylinder (9) is installed on the lifting bracket (8). The lifting end of the lifting cylinder (9) faces downward and is connected to a lifting member (10). The front side of the lifting member (10) is provided with a connecting groove that extends forward and backward. The connector (7) is inserted into the connecting groove from front to back.

6. The extrusion rod lifting and moving device according to claim 5, characterized in that, The connector (7) is a T-shaped part, and the connecting groove is a T-shaped groove.

7. The extrusion rod lifting and moving device according to claim 5, characterized in that, The lifting cylinder is a hydraulic cylinder, and the top surface of the lifting member (10) is provided with a guide rod (11), which is slidably connected to the lifting bracket (8).

8. The extrusion rod lifting and moving device according to any one of claims 5-7, characterized in that, The extrusion rod (2) has a hollow cavity inside, and the center of gravity of the extrusion rod (2) and the slider (3) is located directly below the connector (7).

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