Feeding device for cold isostatic pressing operation of tungsten powder molding rubber die sleeve

Abstract

The invention discloses a feeding device for cold isostatic pressing operation of a tungsten powder forming rubber die sleeve, and relates to the technical field of feeding operation in the tungsten powder forming process. The feeding device comprises a machine box part, a feeding part is arranged in the machine box part, and a rotating part and a clamping part are arranged above the feeding part; the clamping part is used for clamping the rubber die sleeve which is vertically and upwards jacked and pushed to the clamping position by the jacking driving part, and the rotating part is used for rotating the clamped rubber die sleeve by a certain angle so as to convey the rubber die sleeve to a filling position. A feeding process and a filling process are separated in a space dimension and overlapped in a time dimension by adopting modes of horizontal array feeding of a roller, centering and pushing of an arc-shaped plate, positioning and guiding of a jacking guide protective cylinder, multi-station clamping of a turntable and rotary conveying to a filling station; in the tungsten powder filling process of the rubber die sleeve, the time is effectively utilized for feeding operation, clamping is stable, and the rubber die sleeve cannot be damaged.

Description

Technical Field

[0001] This invention relates to the field of feeding operation technology in the tungsten powder forming process, specifically to a feeding device for cold isostatic pressing operation of a rubber mold sleeve for tungsten powder forming. Background Technology

[0002] Cold isostatic pressing (CIP) technology is widely used because it can produce compacts with high relative density and low residual stress in a single process. In the CIP process for tungsten powder molding, rubber or polyurethane elastic sleeves are used to transmit pressure in all directions. However, this process requires employees to fill the rubber sleeves with tungsten powder, which currently presents the following technical drawbacks: When manually filling, because tungsten powder has a fine particle size, poor flowability, and is prone to bridging, dust is easily released during manual filling, causing pollution to the working environment.

[0003] Existing powder filling devices, when used to fill long strip rubber molds, have several drawbacks. They are difficult to load, clamp, and transport the rubber molds. Furthermore, the devices have a large overall footprint, and the single-station loading operation cannot effectively utilize the time during the tungsten powder filling process. In addition, there is uneven filling density, which leads to a large density gradient in the subsequent isostatic pressing blanks, resulting in deformation and cracking after sintering.

[0004] Therefore, our company has made improvements to address this issue. Summary of the Invention

[0005] The purpose of this invention is to address the above problems by providing a feeding device for cold isostatic pressing of tungsten powder forming rubber mold sleeves. This device employs a horizontal array of rollers for feeding, an arc-shaped plate for assisted pushing, a lifting guide sleeve for positioning and guiding, a multi-station turntable for clamping, and a rotating conveyor to the filling station. This separates the feeding and filling processes spatially while overlapping them temporally. It effectively utilizes this time during the tungsten powder filling process of the rubber mold sleeve for feeding, ensuring stable clamping and preventing damage to the rubber mold sleeve.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A feeding device for cold isostatic pressing of a tungsten powder molding rubber mold sleeve includes a hollow sleeve structure for filling tungsten powder, and a housing. The housing is provided with a feeding part for pushing the rubber mold sleeve to the top of the top material drive part. A rotating part and a clamping part are provided above the feeding part. The clamping part is used to clamp the rubber mold sleeve that is vertically lifted and pushed to the clamping position by the top material drive part. The rotating part is used to rotate the clamped rubber mold sleeve at a certain angle to transport it to the filling position.

[0007] As a further improvement to the above solution, the feeding section includes a horizontally arranged support frame, with multiple rollers arranged inside the support frame, and multiple rubber mold sleeves placed side by side on the rollers.

[0008] As a further improvement to the above solution, the end of the support frame away from the chassis is provided with multiple pusher arc plates for horizontally pushing the rubber mold sleeve. The inner diameter of the pusher arc plate is matched with the outer diameter of the rubber mold sleeve. The movable plate on the side of the pusher arc plate is connected to the telescopic shaft end of the pusher drive unit. The pusher drive unit is set on the side support.

[0009] As a further improvement to the above solution, a lifting guide sleeve is provided at the end of the support frame near the rotating part. The lifting guide sleeve has a semi-circular plate-like structure and its inner diameter is matched with the outer diameter of the rubber mold sleeve.

[0010] As a further improvement to the above solution, multiple side guide plates are symmetrically arranged on both sides of the support frame. The side guide plates are in the form of a plate structure, and a limiting plate is horizontally arranged above the side guide plates and on the inner wall of the chassis.

[0011] As a further improvement to the above solution, a lifting sleeve is provided at the top of the telescopic end of the top material drive unit. The lifting sleeve has a hollow sleeve structure and is matched with the lower end of the rubber mold sleeve.

[0012] As a further improvement to the above solution, the clamping part includes a turntable with at least four clamping holes around its circumference for the rubber mold to pass through. An outer clamping block is provided at the position of the clamping hole on the turntable, and a movable clamping block is provided opposite the outer clamping block. The movable clamping block is connected to the telescopic end of the clamping drive part. The outer clamping block has a semi-circular arc plate structure, and the movable clamping block has an arc plate structure. When the movable clamping block closes towards the outer clamping block, it clamps the outer wall of the rubber mold.

[0013] As a further improvement to the above solution, the rotating part includes a carrier plate, a support column is provided between the carrier plate and the bottom of the chassis, an annular groove is provided between the carrier plate and the top of the chassis, and the output shaft of the servo motor provided on the top of the carrier plate is connected to the center of the bottom of the turntable.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The feeding process adopts a horizontal array of rollers for feeding, an arc-shaped plate for centering and pushing, a lifting guide sleeve for positioning and guiding, a turntable for multi-station clamping, and a rotating conveyor to the filling station. This separates the feeding process and the filling process in the spatial dimension, while overlapping them in the temporal dimension. During the tungsten powder filling process in the rubber mold, this time is effectively used for feeding operations, ensuring stable clamping and preventing damage to the rubber mold. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0017] Figure 3 This is a schematic diagram of the main structure of the present invention.

[0018] Figure 4 This is a top view of the structure of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the top material driving part of the present invention.

[0020] Figure 6 This is a schematic diagram of the main structure at the position of the lifting sleeve of the present invention.

[0021] The text labels in the figure represent: 1. Chassis; 2. Top material drive unit; 3. Feeding unit; 4. Rubber mold sleeve; 5. Rotating unit; 6. Clamping unit; 101. Limiting plate; 201. Lifting sleeve; 301. Support frame; 302. Roller; 303. Side guide plate; 304. Side support; 305. Pushing drive unit; 306. Movable plate; 307. Pushing arc plate; 308. Lifting guide sleeve; 501. Support column; 502. Annular groove; 503. Carrier plate; 504. Servo motor; 601. Turntable; 602. Outer clamping block; 603. Movable clamping block; 604. Clamping drive unit. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0023] like Figures 1-6 As shown, the specific solution of this embodiment is as follows: a feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve, including a rubber mold sleeve 4 in the shape of a hollow sleeve for filling tungsten powder, and a machine housing 1. The machine housing 1 is provided with a feeding part 3 for pushing the rubber mold sleeve 4 to the top of the top material driving part 2. A rotating part 5 and a clamping part 6 are provided above the feeding part 3. The clamping part 6 is used to clamp the rubber mold sleeve 4 that is vertically lifted and pushed to the clamping position by the top material driving part 2. The rotating part 5 is used to rotate the clamped rubber mold sleeve 4 at a certain angle to transport it to the filling position.

[0024] More specifically, when a traditional robotic arm directly grips the outer wall of the rubber mold sleeve 4, if the gripping force is too small, the rubber mold sleeve 4 is prone to slipping off; if the gripping force is too large, the rubber mold sleeve 4 is easily damaged. The housing 1 has a hollow box structure. The rubber mold sleeve 4 is first horizontally conveyed at the feeding part 3, and then horizontally conveyed to the top of the top material drive part 2. The top material drive part 2 is driven, and the lifting sleeve 201 moves vertically upward, lifting the rubber mold sleeve 4 upward and passing it through the annular ring. The rubber mold sleeve 4 passes through the clamping hole on the turntable 601 in groove 502. The driving clamping drive unit 604 is activated, and the movable clamping block 603 closes towards the outer clamping block 602, thereby clamping the outer wall of the rubber mold sleeve 4. After the clamping operation is completed, the driving clamping drive unit 604 is activated, and the turntable 601 rotates. More specifically, the turntable 601 is set with four clamping stations. The rubber mold sleeve 4 can be transported from the feeding station to the filling station by rotating the turntable 601 ninety degrees.

[0025] As a preferred embodiment of the above, the feeding section 3 includes a horizontally arranged support frame 301, a plurality of rollers 302 are arranged inside the support frame 301, and a plurality of rubber mold sleeves 4 are placed side by side on the rollers 302.

[0026] More specifically, roller 302 serves to assist in the horizontal transport of the rubber mold sleeve 4.

[0027] As a preferred embodiment of the above, the support frame 301 is provided with a plurality of pusher arc plates 307 for horizontally pushing the rubber mold 4 at one end away from the housing 1. The inner diameter of the pusher arc plate 307 is matched with the outer diameter of the rubber mold 4. The movable plate 306 provided on the side of the pusher arc plate 307 is connected to the telescopic shaft end of the pusher drive unit 305. The pusher drive unit 305 is provided on the side support 304.

[0028] More specifically, the pusher arc plate 307 is used to push the rubber mold sleeve 4 while also preventing the rubber mold sleeve 4, which is in contact with the pusher arc plate 307, from shifting during the pushing process.

[0029] As a preferred embodiment of the above, a lifting guide sleeve 308 is provided at the end of the support frame 301 near the rotating part 5. The lifting guide sleeve 308 has a semi-circular arc plate structure and its inner diameter is matched with the outer diameter of the rubber mold sleeve 4.

[0030] More specifically, the lifting guide sleeve 308 is designed to facilitate the guiding function of the rubber mold sleeve 4 during the lifting process.

[0031] As a preferred embodiment of the above, a plurality of side guide plates 303 are symmetrically arranged on both sides of the support frame 301. The side guide plates 303 are plate-shaped, and a limiting plate 101 is horizontally arranged above the side guide plates 303 and on the inner wall of the chassis 1.

[0032] As a preferred embodiment of the above, a lifting sleeve 201 is provided at the top of the telescopic end of the top material drive unit 2. The lifting sleeve 201 is in the shape of a hollow sleeve and is matched with the lower end of the rubber mold sleeve 4.

[0033] As a preferred embodiment of the above, the clamping part 6 includes a turntable 601. The turntable 601 has at least four clamping holes around its circumference for the rubber mold 4 to pass through. An outer clamping block 602 is provided at the position of the clamping hole on the turntable 601. A movable clamping block 603 is provided opposite to the outer clamping block 602. The movable clamping block 603 is connected to the telescopic end of the clamping drive part 604. The outer clamping block 602 has a semi-circular arc plate structure, and the movable clamping block 603 has an arc plate structure. When the movable clamping block 603 closes towards the outer clamping block 602, it clamps the outer wall of the rubber mold 4.

[0034] As a preferred embodiment of the above, the rotating part 5 includes a carrier plate 503, a support column 501 is provided between the carrier plate 503 and the bottom of the chassis part 1, an annular groove 502 is provided between the carrier plate 503 and the top of the chassis part 1, and the output shaft end of the servo motor 504 provided on the top of the carrier plate 503 is connected to the center of the bottom of the turntable 601.

[0035] More specifically, the pusher drive unit 305 and the top drive unit 2 can be any one of an electric push rod, a pneumatic cylinder, or a hydraulic cylinder.

[0036] The specific working principle of this invention is as follows: The rubber mold sleeve 4 is first horizontally conveyed at the feeding section 3 to the top of the top material drive section 2. The top material drive section 2 is driven, and the lifting sleeve 201 moves vertically upward, lifting the rubber mold sleeve 4 through the annular groove 502. The rubber mold sleeve 4 passes through the clamping hole on the turntable 601. The clamping drive section 604 is driven, and the movable clamping block 603 closes to the outer clamping block 602, thereby clamping the outer wall of the rubber mold sleeve 4. After the clamping operation is completed, the clamping drive section 604 is driven, and the turntable 601 rotates. More specifically, the turntable 601 is set with four clamping stations. The rubber mold sleeve 4 can be transported from the feeding station to the filling station by rotating the turntable 601 ninety degrees.

[0037] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A feeding device for cold isostatic pressing of a tungsten powder molding rubber mold sleeve, comprising a rubber mold sleeve (4) in the form of a hollow sleeve for filling tungsten powder, characterized in that, It also includes a housing section (1), inside which is provided a feeding section (3) for pushing the rubber mold (4) to the top of the material drive section (2). Above the feeding section (3) are a rotating section (5) and a clamping section (6). The clamping section (6) is used to clamp the rubber mold (4) that is vertically lifted and pushed to the clamping position by the material drive section (2). The rotating section (5) is used to rotate the clamped rubber mold (4) at a certain angle to transport it to the filling position.

2. The feeding device for cold isostatic pressing of tungsten powder molding rubber sleeve according to claim 1, characterized in that, The feeding section (3) includes a horizontally arranged support frame (301), and multiple rollers (302) are arranged inside the support frame (301). Multiple rubber mold sleeves (4) are placed side by side on the rollers (302).

3. The feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve according to claim 2, characterized in that, The support frame (301) is provided with a plurality of pusher arc plates (307) for horizontally pushing the rubber mold (4) at one end away from the chassis (1). The inner diameter of the pusher arc plate (307) is matched with the outer diameter of the rubber mold (4). The movable plate (306) provided on the side of the pusher arc plate (307) is connected to the telescopic shaft end of the pusher drive unit (305). The pusher drive unit (305) is provided on the side support (304).

4. The feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve according to claim 2, characterized in that, The support frame (301) is provided with a lifting guide sleeve (308) at the end near the rotating part (5). The lifting guide sleeve (308) has a semi-circular arc plate structure and its inner diameter is matched with the outer diameter of the rubber mold sleeve (4).

5. The feeding device for cold isostatic pressing of tungsten powder molding rubber sleeve according to claim 2, characterized in that, Multiple side guide plates (303) are symmetrically arranged on both sides of the support frame (301). The side guide plates (303) are in the form of a plate structure. A limiting plate (101) is horizontally arranged above the side guide plates (303) and on the inner wall of the chassis (1).

6. The feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve according to claim 1, characterized in that, The top of the telescopic end of the top material drive unit (2) is provided with a lifting sleeve (201). The lifting sleeve (201) is in the shape of a hollow sleeve structure. The lifting sleeve (201) is matched with the lower end of the rubber mold sleeve (4).

7. The feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve according to claim 1, characterized in that, The clamping part (6) includes a turntable (601). At least four clamping holes for the rubber mold (4) to pass through are provided on the circumference of the turntable (601). An outer clamping block (602) is provided at the position of the clamping hole on the turntable (601). A movable clamping block (603) is provided opposite to the outer clamping block (602). The movable clamping block (603) is connected to the telescopic end of the clamping drive part (604). The outer clamping block (602) has a semi-circular arc plate structure, and the movable clamping block (603) has an arc plate structure. When the movable clamping block (603) closes to the outer clamping block (602), it clamps the outer wall of the rubber mold (4).

8. The feeding device for cold isostatic pressing of tungsten powder molding rubber mold sleeve according to claim 7, characterized in that, The rotating part (5) includes a carrier plate (503), a support column (501) is provided between the carrier plate (503) and the bottom of the chassis part (1), an annular groove (502) is provided between the carrier plate (503) and the top of the chassis part (1), and the output shaft end of the servo motor (504) provided on the top of the carrier plate (503) is connected to the center of the bottom of the turntable (601).

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