A device for cleaning the inner hole of a cemented carbide extrusion forming semi-finished blank

Abstract

The application provides a hard alloy extrusion forming semi-finished product blank inner hole cleaning device, which comprises a material loading mechanism, a blowing mechanism and a dust collecting mechanism. The material loading mechanism is used for placing a semi-finished product blank to be cleaned and moving the semi-finished product blank to a specified position. The blowing mechanism is arranged on one side of the material loading mechanism and is used for blowing dust and debris in the hole of the semi-finished product blank. The dust collecting mechanism is connected with the bottom of the material loading mechanism and is used for collecting the blown dust and debris. The application can realize automatic cleaning of the inner hole of a hard alloy extrusion forming semi-finished product blank rod. The device has the advantages of simple structure, simple operation, high efficiency and low damage to products.

Description

Technical Field

[0001] This application relates to the field of cemented carbide extrusion molding material processing, specifically, to a device for cleaning the inner hole of a cemented carbide extrusion molding semi-finished product blank. Background Technology

[0002] With industry development, the widespread use of high-precision CNC machining equipment, and the extensive use of machining materials, ordinary externally cooled carbide drills can no longer meet today's market demands. Therefore, perforated bars (spiral hole bars, single / double straight hole bars, and irregularly shaped hole bars) have emerged from cemented carbide materials for manufacturing long drills or internally cooled end mills and other cutting tools, widely used in the automotive, aerospace, and precision mold industries. The characteristic of perforated drills is the presence of internal cooling holes. During cutting, compressed air, oil, or cutting fluid passes through these holes, cooling the drill or end mill, flushing away chips, reducing drill temperature, and increasing tool durability and dimensional stability. Therefore, perforated cutting tools offer superior machining performance compared to those made from ordinary carbide bars, making them particularly suitable for deep hole machining and other difficult-to-machine materials, while reducing damage to the tool and product appearance caused by high heat during high-speed machining.

[0003] In the cemented carbide extrusion process, the extruded material is extruded through a die to obtain a semi-finished blank. This blank is then cut to a predetermined size and sintered. During the cutting process, ordinary solid bars, after cleaning residual powder from their surface, can be transferred to a sintering vessel for subsequent sintering. However, extrusion processes produce a wider variety of products, including single-hole straight bars, double-hole straight bars, double-hole spiral bars, triple-hole spiral bars, and extruded bars with holes (axial holes), such as those produced by gun drills. When cutting these bars into semi-finished blanks, the resulting powder can enter the inner holes of the bars. If this residual powder is not cleaned before sintering, it will cause blockage of the inner holes after sintering, or a reduction in the internal porosity, significantly reducing the product's performance in subsequent use (reduced coolant flow, affecting cooling performance, etc.). Therefore, in daily production, the usual process involves operators manually cleaning the blocked inner holes of the bars.

[0004] During the process, employees usually use an air gun to blow clean the inner holes of the bars one by one. This operation has the following problems: ① The blowing efficiency is slow, and the efficiency will be even slower if the product has many holes; ② There may be cases of missed blowing due to human error; ③ After blowing with an air gun, the dust problem in the workshop is serious.

[0005] Therefore, it is necessary to propose a device for cleaning the inner hole of semi-finished blank bars to solve the above-mentioned technical problems. Summary of the Invention

[0006] In view of one of the defects in the prior art, the purpose of this application is to provide a device for cleaning the inner hole of a cemented carbide extrusion molding semi-finished product blank.

[0007] This application provides a device for cleaning the inner hole of a cemented carbide extrusion-formed semi-finished blank, comprising:

[0008] A material loading mechanism is used to place the semi-finished blanks to be cleaned and move the semi-finished blanks to a designated position;

[0009] An air blowing mechanism is provided on one side of the material carrying mechanism. The air blowing mechanism is used to blow out dust and debris from the holes of the semi-finished blank.

[0010] The dust collection mechanism is connected to the bottom of the material carrying mechanism and is used to collect the blown dust and debris.

[0011] Optionally, the material loading mechanism includes:

[0012] The rack serves as a supporting foundation;

[0013] A product placement seat is located above the machine frame, and the semi-finished blank is placed on the product placement seat; a slider is provided below the product placement seat, and the slider is driven by a ball screw to achieve horizontal movement;

[0014] A sealing cover is fitted over the product placement seat to form a sealed blowing mechanism.

[0015] Optionally, the blowhole nozzle in the inner hole of the blowing end of the blowing mechanism rotates.

[0016] Optionally, the blowing mechanism includes a rotary cylinder connected to the blowing nozzle, and a height adjustment block connected to a rotating screw is provided below the rotary cylinder. Rotating the rotating screw adjusts the height of the height adjustment block to adjust the height of the blowing nozzle so that it is aligned with the height of the inner hole of the semi-finished blank.

[0017] Optionally, the dust collection mechanism includes a dust collection system and a duct fan. One end of the duct fan is connected to the sealing cover, and the other end is connected to one end of the dust collection system. The other end of the dust collection system is connected to the frame. The frame has a cavity inside, in which the blown dust and debris are collected.

[0018] Optionally, the duct fan is a high-pressure turbine fan.

[0019] The cemented carbide extrusion molding semi-finished product blank inner hole cleaning device provided in this application can realize the automated cleaning of the inner hole of cemented carbide extrusion molding semi-finished product blank bar through the mutual cooperation between the various mechanisms. The device has a simple structure and has the advantages of simple operation, high efficiency and low risk of damaging the product.

[0020] Other technical effects resulting from the additional features will be further illustrated in the corresponding embodiments. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a cemented carbide extrusion molding semi-finished product blank internal hole cleaning device according to an exemplary embodiment.

[0023] Figure 2 This is a top view schematic diagram of a cemented carbide extrusion molding semi-finished product blank internal hole cleaning device according to an exemplary embodiment.

[0024] Figure 3 This is a schematic front view of a cemented carbide extrusion molding semi-finished product blank inner hole cleaning device according to an exemplary embodiment.

[0025] Figure 4 This is a schematic diagram illustrating the cleaning of the inner hole of a porous product according to an exemplary embodiment;

[0026] In the diagram: 1 is the frame, 2 is the dust collection system, 3 is the duct fan, 4 is the fixed base, 5 is the product placement seat, 6 is the semi-finished blank, 7 is the sealing cover, 8 is the blowhole nozzle, 9 is the rotating screw, 10 is the rotary cylinder, 11 is the height adjustment block, 12 is the air supply module, 13 is the touch screen, 14 is the electrical control cabinet, 15 is the air inlet pipe of the blowhole nozzle, and 16 is the air inlet pipe of the rotary cylinder. Detailed Implementation

[0027] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all fall within the protection scope of the present application. Parts not described in detail in the following embodiments can be implemented using existing technology.

[0028] In the prior art, the cleaning of the inner hole of semi-finished billet bars is usually done manually, lacking a corresponding cleaning device. Based on the above problems, this application provides a device for cleaning the inner hole of cemented carbide extrusion-formed semi-finished billets to solve the aforementioned issues.

[0029] Reference Figures 1-3 As shown in one embodiment of this application, the cemented carbide extrusion molding semi-finished blank inner hole cleaning device includes a material loading mechanism, an air blowing mechanism, and a dust collection mechanism, wherein: the material loading mechanism is used to place the semi-finished blank 6 (i.e., the product) to be cleaned and move the semi-finished blank 6 to a designated position; the air blowing mechanism is located on one side of the material loading mechanism and is used to blow out dust and debris from the hole of the semi-finished blank 6; the dust collection mechanism is connected to the bottom of the material loading mechanism and is used to collect the blown-out dust and debris.

[0030] Specifically, the aforementioned designated position refers to the air nozzle 8 of the air blowing mechanism being aligned with the inner hole of the rod. The semi-finished blank 6 is placed in the middle position, and the air blowing mechanism on one side blows compressed air. The air blowing mechanism can move up and down and rotate, while the dust collection mechanism on the other side sucks up the loose powder blown out of the hole and the loose powder outside the rod.

[0031] The above embodiments of this application, through the mutual cooperation between various mechanisms, can realize the automated cleaning of the inner hole of the cemented carbide extrusion molding semi-finished blank bar. The device has a simple structure and has the advantages of simple operation, high efficiency, and low risk of damaging the product.

[0032] In order to place the semi-finished blank 6 to be cleaned and move it to a designated position, in some specific embodiments of this application, the material loading mechanism includes a frame 1, a product placement seat 5, and a sealing cover 7. The frame 1 provides a supporting base; the product placement seat 5 is located above the frame 1, and the semi-finished blank 6 is placed on the product placement seat 5; a slider is provided below the product placement seat 5, and the slider is driven by a ball screw to move horizontally (i.e., move along the length direction of the semi-finished blank); the sealing cover 7 covers the product placement seat 5 to form a sealed blowing mechanism.

[0033] Specifically, the product placement seat 5 is located on the fixed base 4 at the top of the frame 1. The product placement seat 5 is a material tray with a V-groove on its surface. A servo motor controlled by a PLC rotates a ball screw, which drives a slider to move the material tray (i.e., the product placement seat). This allows the material tray to move left and right at a uniform speed, thereby adjusting the distance between the material tray and the blowhole nozzle according to the product length.

[0034] It should be noted that after the semi-finished blank 6 is placed on the product placement seat 5, the height is adjusted to align with the air nozzle of the blowing mechanism for the first time. Subsequent products in the same batch do not need to be adjusted in height again.

[0035] In the above embodiments of this application, the material carrier tray holds the semi-finished blank 6, the material carrier mechanism is driven by a servo motor, and the running speed, stroke and action of the material carrier mechanism are controlled by a PLC to transport the material to the designated position.

[0036] In order to thoroughly remove dust and debris from the hole, in some specific embodiments of this application, the blow nozzle 8 in the inner hole of the blow end of the blowing mechanism rotates with the module.

[0037] In order to keep the blow nozzle 8 aligned with the height of the hole when the diameter of the single straight hole product changes, in some specific embodiments of this application, the blowing mechanism includes a rotary cylinder 10 connected to the blow nozzle 8. A height adjustment block 11 connected to a rotary screw 9 is provided below the rotary cylinder 10. Rotating the rotary screw 9 adjusts the height of the height adjustment block 11 to adjust the height of the blow nozzle 8 so that it is aligned with the height of the inner hole of the semi-finished blank.

[0038] Specifically, the blow nozzle 8 is connected to the air supply module 12 through the air inlet pipe 15, the rotary cylinder 10 is connected to the air supply module 12 through the rotary cylinder inlet pipe 16, and a height adjustment block 11 is provided below the rotary cylinder 10 and connected to the rotary screw 9 to adjust the height of the nozzle so that it corresponds to the product.

[0039] Specifically, the blow nozzle 8 blows out the debris inside the hole after the semi-finished blank 6 is in place. For bars with a single straight hole, a single-hole blow nozzle 8 is used; for bars with double straight holes, double spirals, or triple holes, double nozzles can be used. The blowing mechanism is driven by a servo motor, and the running speed and actions of the blowing mechanism are controlled by a PLC.

[0040] In the above embodiments of this application, the product placement seat moves horizontally, and the position of the blowhole nozzle 8 is adjusted by the up-and-down movement of the blowing mechanism, thereby achieving the adjustment of the blowhole nozzle and the height of the hole when the diameter of the single straight hole product changes. This method has a lighter and simpler structure.

[0041] In order to collect the blown dust and debris, in some specific embodiments of this application, the dust collection mechanism includes a dust collection system 2 and a duct fan 3. One end of the duct fan 3 is connected to a sealing cover 7, and the other end is connected to one end of the dust collection system 2. The other end of the dust collection system 2 is connected to a frame 1. The frame 1 has a cavity inside, and the blown dust and debris are collected in the cavity.

[0042] In order to improve the effect of removing blown dust, in some specific embodiments of this application, the duct fan adopts a high-pressure turbine fan.

[0043] For example, as shown in Figure 4, the semi-finished blank 6 is placed on the V-groove of the product placement seat 5. The V-groove is adjustable up and down by a motor. The hole is adjusted to align with the blow-hole nozzle 8 according to the diameter of the blank. The blowing mechanism fixes 5 blow-hole nozzles 8, which can blow 5 products at a time. The 5 sets of blow-hole nozzles 8 can rotate independently to ensure that all holes are blown. At the other end of the rod opposite the blowing mechanism is a high-pressure turbine fan, which sucks away the blown dust. The powder is collected by the dust collection mechanism below.

[0044] It should be noted that, in the above embodiments of this application, the device also includes an electrical control cabinet 14 and a touch screen 13 mounted thereon. All wiring and piping used in the mechanism's operation are constrained by cable chains, ensuring stable device operation and preventing the mechanism from being affected by wiring and piping. The lead screw and linear guide rails used in the mechanism are protected by bellows covers. Since the working environment is dusty, the bellows covers extend the mechanism's service life.

[0045] Using the apparatus described in the above embodiments, the cleaning process for the cemented carbide extrusion molding semi-finished blank is specifically as follows:

[0046] S1, the initial stage of the device: reset the device, open the sealing cover, and move the product placement seat to the left side of the device;

[0047] S2, Place the semi-finished blank product on the product placement seat and adjust the height to align the blank with the blow hole nozzle of the blowing mechanism;

[0048] S3, start the automatic blowing program of the device. At the same time, compressed air (blowing mechanism) and high-pressure turbine fan are turned on. The multi-hole bar program automatically rotates the blowing nozzle to remove dust from the bar body and the hole. It stops after the program set time is reached.

[0049] S4. After blowing, the compressed air and high-pressure turbine fan are turned off, the device stops running, the sealing cover is opened, the semi-finished blank is removed, and the blowing is completed.

[0050] S5, open the bottom frame to clean and recycle the dust in the dust collection mechanism.

[0051] The above describes the purging action for one cycle.

[0052] The above embodiments of this application feature a simple and efficient device that can process five bars simultaneously. It is easy to operate and does not easily damage the products during normal operation, thus ensuring product quality. In practical applications, it is typically used in conjunction with dust extraction equipment to reduce dust hazards during operation. This device can be operated manually or combined with a robotic arm to achieve automated production.

[0053] The preferred features in the above embodiments can be used individually in any embodiment, or in any combination thereof, provided they do not conflict with each other. Furthermore, parts not described in detail in the embodiments can be implemented using existing technologies.

[0054] In the description of the embodiments of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application 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 this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0056] In the description of the embodiments in this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or devices.

[0058] The foregoing has described some specific embodiments of this application. It should be understood that this application is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this application. The above-described preferred features can be used in any combination without conflict.

Claims

1. A device for cleaning the bore of a cemented carbide extrusion-moulded semi-finished blank, characterised in that include: A material loading mechanism is used to place the semi-finished blanks to be cleaned and move the semi-finished blanks to a designated position; An air blowing mechanism is provided on one side of the material carrying mechanism. The air blowing mechanism is used to blow out dust and debris from the holes of the semi-finished blank. The dust collection mechanism is connected to the bottom of the material carrying mechanism and is used to collect the blown dust and debris.

2. A device for cleaning the bore of a cemented carbide extruded semi-finished blank according to claim 1, characterized in that The material loading mechanism includes: The rack serves as a supporting foundation; A product placement seat is located above the machine frame, and the semi-finished blank is placed on the product placement seat; a slider is provided below the product placement seat, and the slider is driven by a ball screw to achieve horizontal movement; A sealing cover is fitted over the product placement seat to form a sealed blowing mechanism.

3. A device for cleaning the bore of a cemented carbide extruded semi-finished blank according to claim 1, characterized in that The blowing nozzle in the blowing end of the blowing mechanism rotates.

4. A compacted semi-finished cemented carbide green body hole cleaning device according to claim 3, characterized in that, The blowing mechanism includes a rotary cylinder connected to the blowing nozzle. Below the rotary cylinder is a height adjustment block connected to a rotating screw. Rotating the rotating screw adjusts the height of the height adjustment block to adjust the height of the blowing nozzle so that it is aligned with the height of the inner hole of the semi-finished blank.

5. A compacted semi-finished cemented carbide green body hole cleaning device according to claim 2, characterized in that The dust collection mechanism includes a dust collection system and a duct fan. One end of the duct fan is connected to the sealing cover, and the other end is connected to one end of the dust collection system. The other end of the dust collection system is connected to the frame. The frame has a cavity inside, in which the blown dust and debris are collected.

6. A compacted semi-finished cemented carbide green body hole cleaning device according to claim 5, characterized in that The duct fan is a high-pressure turbine fan.

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