Extrusion die waste drawing cleaning mechanism

Abstract

The utility model discloses an extrusion die waste drawing cleaning mechanism, and the mechanism includes frame, heavy load sliding block track system and die cavity limit board of installation on frame. One sliding assembly can move on the track, and the integrated pincer jaw mechanism driven by clamping drive cylinder and connecting rod mechanism is on it. One both ends articulated drawing drive hydraulic cylinder drives the reciprocating motion of sliding assembly. The wear -resistant tooth pattern is equipped with in the jaw clamping end, and the adaptive adjustment of clamping force is realized by the closed -loop control system with pressure sensor. When working, through PLC automatic control, the whole process of clamping waste, drawing out die and waste from the die cavity with cooperation limit board, separating waste from the die with cooperation die limit board is completed in turn. The utility model discloses reliable structure, convenient operation has greatly promoted the cleaning efficiency, security and equipment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of metal extrusion processing equipment technology, and in particular to a mechanism for automatically pulling and cleaning residual waste in the die cavity and mold after the extrusion production is completed. Background Technology

[0002] In the extrusion production of metal profiles such as copper busbars, extrusion dies are installed inside the die cavity of the equipment. After a production batch is completed, a large amount of waste material, such as scrap copper, oxide scale, and deformed sprues, will remain in the high-temperature die and die cavity. If these residues are not cleaned in a timely and thorough manner, they will directly affect the surface quality and dimensional accuracy of the next batch of products, and in severe cases, may even lead to damage to the new die or direct scrapping of the product.

[0003] Currently, manual cleaning is the most common method used in the industry. This method typically requires shutting down the production line and allowing the equipment to cool down slightly before operators manually disassemble the mold. Then, tools such as pry bars and hammers are used to knock, pry, and peel off the waste material inside the mold and cavity. This traditional cleaning method has many drawbacks:

[0004] 1. Inefficiency: The entire cleaning process is time-consuming, usually taking more than 30 minutes, which seriously affects the continuity of the production line and the overall efficiency.

[0005] 2. Significant safety hazards: The mold temperature remains very high during cleaning operations (usually above 550℃), making operators highly susceptible to burns; at the same time, metal fragments flying during the hammering process may also cause injury to personnel.

[0006] 3. Incomplete cleaning: Some dead corners or complex parts inside the mold cavity are difficult to reach with manual tools, resulting in waste material residue. These residues will become the source of inclusions or air bubbles in the next batch of products.

[0007] 4. Damage to the mold: Using violent methods such as hammering to clean the mold can easily cause micro-cracks in the core of the mold (such as high-hardness materials like H13 steel). The accumulated damage will significantly shorten the service life of the mold.

[0008] 5. High labor costs: The need for dedicated cleaning personnel increases labor costs and hinders the development of production lines towards automation and unmanned operation. Summary of the Invention

[0009] The purpose of this utility model is to provide a waste material pulling and cleaning mechanism for extrusion molds with a specific structure and reliable operation, so as to solve the problems of low efficiency, high safety risks, incomplete cleaning, easy damage to molds, and high labor costs of the existing manual cleaning method.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A waste material removal and cleaning mechanism for extrusion dies includes:

[0012] The frame serves as the supporting base for the entire mechanism;

[0013] A slider track system, horizontally fixedly mounted on the frame, is used to provide linear motion guidance;

[0014] A sliding assembly slidably mounted on the slider track system, the sliding assembly comprising:

[0015] A slider that slides in conjunction with the slider track system;

[0016] A clamp-shaped gripper mechanism is fixed on the slider and used to clamp and squeeze scrap copper;

[0017] A clamping drive cylinder has its cylinder body fixed on the slider, and its piston rod is connected to the clamp-shaped gripper mechanism for driving the clamp-shaped gripper mechanism to open or clamp.

[0018] A pull-drive hydraulic cylinder has one end of its cylinder body fixed to the frame, and the end of its piston rod fixedly connected to the sliding assembly, for driving the sliding assembly to perform reciprocating linear motion along the slider track system;

[0019] A mold cavity limiting plate is fixedly installed on the frame, and its position is directly opposite to the pulling direction of the pulling drive hydraulic cylinder. It is used to abut against and block the mold cavity during the pulling process.

[0020] Preferably, the clamping jaw mechanism includes a jaw base fixed on a slider and two symmetrically arranged jaw arms rotatably connected to the jaw base about their respective pivot axes, with the front end of each jaw arm being a clamping end for biting and squeezing scrap copper.

[0021] Preferably, the piston rod of the clamping drive cylinder is connected to the rear end of the two gripper arms through a linkage mechanism. The linkage mechanism is used to convert the linear reciprocating motion of the piston rod into the synchronous reverse rotation of the two gripper arms around their respective pivot axes, thereby realizing the synchronous opening or clamping of the clamping ends.

[0022] Preferably, it also includes a mold limiting plate, which is detachably installed on the frame or set on a separate waste separation station, and is used to abut against and block the movement of the mold during the step of separating waste from the mold.

[0023] Preferably, the slider track system includes at least one linear guide rail fixed on the frame and a slider seat integrated with the slider. The slider seat is slidably sleeved on the linear guide rail to withstand the huge load and overturning moment generated during pulling.

[0024] Preferably, the cylinder body of the pull-drive hydraulic cylinder is fixed at one end of the frame away from the mold cavity limiting plate, and the end of its piston rod is fixedly connected to the slider through a ball joint to compensate for minor misalignment errors that may occur during installation.

[0025] Preferably, the gripping end surface of the gripper arm is provided with wear-resistant hardened teeth or diamond coating to increase the friction between it and the extruded scrap copper, ensuring the reliability of gripping under high temperature and high pulling force.

[0026] Preferably, it further includes a control system, which is electrically connected to the hydraulic valve group of the pulling drive hydraulic cylinder and the pneumatic valve group of the clamping drive cylinder, for automatically controlling the timing actions of pulling, clamping, releasing and resetting according to a preset program.

[0027] Preferably, the control system further includes a pressure sensor, which is installed in the air supply circuit of the clamping drive cylinder to monitor the clamping pressure in real time and feed it back to the control system. The control system automatically adjusts the opening of the pneumatic valve group according to the feedback value to achieve closed-loop adaptive control of the clamping force.

[0028] Compared with the prior art, the beneficial effects of this utility model are that by integrating the main pulling drive, clamping drive, and moving guide functions into a clearly structured and coordinated automated system, it achieves rapid, safe, and thorough cleaning of extruded waste. The specific advantages are as follows:

[0029] 1. Highly efficient cleaning: The automated process is interconnected, and the cleaning time for a single operation can be controlled within 30 seconds, which greatly improves production turnover efficiency.

[0030] 2. Safe and reliable: No human intervention is required in the high-temperature area throughout the process, completely eliminating safety hazards such as burns and bruises.

[0031] 3. Thorough cleaning: Utilizing powerful hydraulic pulling force in conjunction with a limiting structure, waste material and the mold as a whole can be completely pulled out of the mold cavity without any dead corners or residue.

[0032] 4. Mold protection: The stable linear drawing force replaces the impact force, avoiding microscopic damage to the mold and significantly extending its service life.

[0033] 5. Automation Integration: The compact and reasonable structural design makes it easy to link with the main production line PLC system, making it a key technology and equipment for realizing unmanned production in the extrusion workshop. Attached Figure Description

[0034] This disclosure includes accompanying drawings, which are to be considered included in and form part of the specification, and together with the specification illustrate various exemplary embodiments, features, and aspects of the disclosure and serve to explain the principles of the disclosure. The invention will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings. Wherein:

[0035] Figure 1 This is a three-dimensional structural diagram of one embodiment of the present utility model. Figure 2 This is a front view of the structure of one embodiment of the present utility model.

[0036] In the diagram: 1-Pull-out hydraulic cylinder, 2-Clamping-out air cylinder, 3-Pliers-shaped gripper mechanism, 4-Slider track system, 5-Extruded scrap copper, 6-Mold limiting plate, 7-Mold cavity limiting plate, 8-Mold cavity, 9-Frame, 10-Mold. Detailed Implementation

[0037] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0038] like Figure 1-2 As shown, the present invention provides a waste material pulling and cleaning mechanism for extrusion molds, which is constructed on a rigid frame 9 formed by welding or casting of steel profiles.

[0039] A slider rail system 4 is fixedly installed on the upper surface of the frame 9 along the working direction. In this preferred embodiment, the system is specifically one or more parallel linear guide rails, used to withstand the huge vertical and lateral loads generated during the drawing process, and to ensure the smoothness and straightness of the sliding assembly movement.

[0040] A sliding assembly is slidably mounted on the slider track system 4. The slider seat at the bottom of the assembly is precisely fitted with the linear guide rail. Above the slider seat, a clamping jaw mechanism 3 is fixed. This mechanism includes a jaw base and two jaw arms symmetrically mounted on the base, each jaw arm being rotatable about an axis via a pivot. The front end of the jaw arm is a specially designed gripping end with wear-resistant, hardened teeth machined on its inner surface to provide sufficient friction and prevent slippage when gripping high-temperature extruded scrap copper 5.

[0041] Also fixed to the slider seat is the clamping drive cylinder 2. Its piston rod is connected to the rear ends (the other ends of the lever arms) of the two gripper arms through a sophisticated linkage mechanism. When the cylinder piston rod extends or retracts, the linkage mechanism converts this linear motion into synchronous counter-rotation of the two gripper arms around their respective pivot axes, thereby achieving rapid and synchronous opening or clamping of the clamping ends.

[0042] The pulling force is provided by the pulling drive hydraulic cylinder 1. Its cylinder body is fixed to the far end of the frame 9 via an ear-type hinge, while the end of the piston rod is connected to the sliding assembly via a ball-head hinge. This double-hinged connection allows for free swinging within a small angle range, effectively compensating for misalignment errors in the installation of the guide rail, frame, and hydraulic cylinder, avoiding additional stress, and protecting the cylinder and guide rail.

[0043] A mold cavity limiting plate 7 is fixed at one end of the working area of ​​the frame 9. In addition, a mold limiting plate 6 is provided that can be installed or moved as needed.

[0044] The entire mechanism is controlled by a unified control system, which utilizes existing technology and can also be manually controlled. This system includes a PLC controller, a touchscreen human-machine interface, and control circuitry connected to the solenoid valve assemblies of hydraulic cylinder 1 and pneumatic cylinder 2. Specifically, a pressure sensor is installed on the air supply line of pneumatic cylinder 2 to monitor the clamping pressure in real time.

[0045] The detailed workflow is as follows:

[0046] Preparation and Positioning: Place the mold cavity 8, containing the mold 10 and scrap copper 5, onto the worktable, close to the mold cavity limiting plate 7. The operator starts the automatic program on the touch screen.

[0047] Automatic clamping: The control system drives hydraulic cylinder 1 to push the sliding assembly forward until the sensor on it detects that the preset clamping position has been reached. Then, the control system sends a command to the valve group of clamping drive cylinder 2, causing the cylinder to actuate and close the gripper arm. During this process, the pressure sensor feeds back the real-time pressure value to the PLC. The PLC, based on the preset pressure range, adjusts the proportional valve to precisely control the clamping force within the set value, achieving adaptive clamping. Alternatively, manual observation of clamping status and manual control of its movement are also possible.

[0048] Pulling out the mold and scrap: After clamping confirmation, the control system instructs the valve group of hydraulic cylinder 1 to reverse, and the piston rod begins to pull at the set speed and pressure. Because the mold cavity 8 is blocked by the mold cavity limiting plate 7, the mold 10 and scrap copper 5 are pulled out of the mold cavity 8 as a whole.

[0049] Separating the waste material from the mold: The assembly is flipped by a robot (or manually) and placed at a station where it is blocked by the mold limiting plate 6. The automatic clamping action of step 2 is repeated. The hydraulic cylinder 1 is activated again to pull, at which point the waste copper 5 on the other side is separated from the blocked mold 10.

[0050] Reset: After cleaning, the control system drives all components back to the initial origin, waiting for the next cycle instruction.

[0051] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, and the scope of the present invention is not limited to the embodiments described above. Many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. That is, those skilled in the art can make various changes and improvements to the present invention in form and detail, and all of these are considered to fall within the protection scope of the present invention. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to the technology in the market of the various embodiments, or to enable those skilled in the art to understand the embodiments disclosed herein.

Claims

1. A waste material pulling and cleaning mechanism for extrusion dies, characterized in that, include: The frame (9) serves as the supporting base for the entire mechanism; A slider track system (4) is horizontally fixed on the frame (9) to provide linear motion guidance; A sliding assembly slidably mounted on the slider track system (4), the sliding assembly comprising: A slider, which slides in conjunction with the slider track system (4); A clamping jaw mechanism (3) is fixed on the slider and is used to clamp and squeeze scrap copper (5); A clamping drive cylinder (2) has its cylinder body fixed on the slider, and its piston rod is connected to the clamp-shaped gripper mechanism (3) for driving the clamp-shaped gripper mechanism (3) to open or clamp. A pull-drive hydraulic cylinder (1) has one end of its cylinder body fixed on the frame (9), and the end of its piston rod is fixedly connected to the sliding assembly, which is used to drive the sliding assembly to reciprocate linearly along the slider track system (4); A mold cavity limiting plate (7) is fixedly installed on the frame (9), and its position is directly opposite to the pulling direction of the pulling drive hydraulic cylinder (1), which is used to abut against and block the mold cavity (8) during the pulling process.

2. The extrusion die waste drawing and cleaning mechanism according to claim 1, characterized in that, The clamping jaw mechanism (3) includes a jaw base fixed on the slider and two symmetrically arranged jaw arms that are rotatably connected to the jaw base about their respective pivot axes. The front end of each jaw arm is a clamping end for biting and squeezing scrap copper (5).

3. The extrusion die waste drawing and cleaning mechanism according to claim 2, characterized in that, The piston rod of the clamping drive cylinder (2) is connected to the rear end of the two gripper arms through a linkage mechanism. The linkage mechanism is used to convert the linear reciprocating motion of the piston rod into the synchronous reverse rotation of the two gripper arms around their respective pivot axes, thereby realizing the synchronous opening or clamping of the clamping ends.

4. The extrusion die waste drawing and cleaning mechanism according to claim 1, characterized in that, It also includes a mold limiting plate (6), which is detachably installed on the frame (9) or set on an independent waste separation station, and is used to abut against and block the movement of the mold (10) in the step of separating waste from mold.

5. The extrusion die waste drawing and cleaning mechanism according to claim 1, characterized in that, The slider rail system (4) includes at least one linear guide rail fixed on the frame (9) and a slider seat integrated with the slider. The slider seat is slidably sleeved on the linear guide rail to withstand the huge load and overturning moment generated during pulling.

6. The extrusion die waste drawing and cleaning mechanism according to claim 1, characterized in that, The cylinder body of the drawing drive hydraulic cylinder (1) is fixed to one end of the frame (9) away from the mold cavity limiting plate (7), and the end of its piston rod is fixedly connected to the slider through a ball joint to compensate for minor misalignment errors that may exist during the installation process.

7. The extrusion die waste drawing and cleaning mechanism according to claim 2, characterized in that, The gripping end surface of the gripper arm is provided with wear-resistant hardened teeth or diamond coating to increase the friction between the gripper and the extruded scrap copper (5) and ensure the reliability of gripping under high temperature and high pull.

8. The extrusion die waste drawing and cleaning mechanism according to claim 1, characterized in that, It also includes a control system, which is electrically connected to the hydraulic valve group of the pulling drive hydraulic cylinder (1) and the pneumatic valve group of the clamping drive cylinder (2), and is used to automatically control the timing of pulling, clamping, releasing and resetting according to a preset program.

9. The extrusion die waste drawing and cleaning mechanism according to claim 8, characterized in that, The control system also includes a pressure sensor, which is installed on the air supply circuit of the clamping drive cylinder (2) to monitor the clamping pressure in real time and feed it back to the control system. The control system automatically adjusts the opening of the pneumatic valve group according to the feedback value to achieve closed-loop adaptive control of the clamping force.

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