Rotary positioning device

Abstract

The utility model belongs to the technical field of matching of casting equipment, particularly relates to a rotary positioning device, and solves the problems that a rotary worktable cannot be accurately positioned, so that an inner cavity of a sand mold is damaged when a template is separated from the sand mold, and the quality of the sand mold is influenced in the prior art due to the fact that a rotary positioning pin is used for positioning the rotary worktable through telescopic driving of a cylinder rod. And finally, the quality of a casting product is influenced, and the beneficial technical effects of accurate positioning and effective damage reduction are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting equipment supporting, and particularly relates to a rotary positioning device. Background Technique

[0002] With the demand for modern production automation, the requirements for various aspects of casting equipment are becoming higher and higher. In the field of automatic molding equipment with double-sided templates for vertical molding and horizontal parting, multi-station molding machines are increasingly popular and trusted by industry users. Due to the structural characteristics of multi-station, when molding at the molding station, core setting or demolding can be carried out at other stations. During a molding cycle, the core setting time is significantly more advantageous than that of a single-station molding machine, and the efficiency is significantly improved; when multiple sand box devices of an HMT multi-station molding machine are exchanged between the molding station and the core setting station, they need to rotate around the rotating shaft, and the position where the sand box rotates to the molding station must be accurate. The rotation drive is a servo motor, which can be adjusted in speed (fast or slow) and started and stopped at a position according to requirements. The rotation angle accuracy can be guaranteed by the motor. The determination of the initial position reference needs to be determined externally. For example, positioning blocks are added to the rotating workbench, but only relying on the positioning blocks of the workbench auxiliary frame and the workbench rotating bracket cannot accurately determine the initial position. The low accuracy of the initial position will cause wear of the positioning pins and sleeves of the sand box and the sand box bracket, and may cause damage to the inner cavity of the sand mold when the mold plate is separated from the sand mold, thereby affecting the quality of the cast product;

[0003] The prior art has the problem that the rotating workbench cannot be accurately positioned, resulting in damage to the inner cavity of the sand mold when the mold plate is separated from the sand mold, and ultimately affecting the quality of the cast product. Summary of the Invention

[0004] The utility model provides a rotary positioning device to solve the problem in the above background technique that the prior art has the problem that the rotating workbench cannot be accurately positioned, resulting in damage to the inner cavity of the sand mold when the mold plate is separated from the sand mold, and ultimately affecting the quality of the cast product.

[0005] The technical problem solved by the utility model is realized by the following technical solutions: a rotary positioning device includes a rotary positioning column. One end of the rotary positioning column vertically supports a rotary support bearing fixed frame and a rotary workbench through a rotary positioning fixed frame. The rotary support bearing fixed frame axially fixes a bolt-type roller bearing, and the bolt-type roller bearing is axially connected to the rotary workbench. The other end of the rotary positioning fixed frame fixes a cylinder. A rotary positioning sleeve is fixed outside the cylinder rod of the cylinder, and an end cover is fixed to the rotary positioning sleeve. The cylinder is connected to a rotary positioning pin through its cylinder rod, and the rotary positioning pin drives the positioning of the rotary workbench through the telescopic movement of the cylinder rod.

[0006] Further, lubricating oil is added to the rotary positioning pin through a grease cup.

[0007] Furthermore, the rotary positioning pin telescopically passes through the inner hole of the end cover, and an oil film is formed between the rotary positioning pin and the inner hole of the end cover.

[0008] Furthermore, the grease cup is provided with a grease injection hole, and a dust-proof ring is provided in the grease injection hole.

[0009] Furthermore, the front end of the rotary positioning pin is a conical surface.

[0010] Beneficial technical effects:

[0011] 1. In this patent, the rotary positioning column vertically supports the rotary support bearing fixing frame and the rotary worktable through one end of the rotary positioning fixing frame. The rotary support bearing fixing frame axially fixes the bolt-type roller bearing, and the bolt-type roller bearing is axially connected to the rotary worktable. The other end of the rotary positioning fixing frame fixes the cylinder. A rotary positioning sleeve is fixed outside the cylinder rod, and the rotary positioning sleeve fixes the end cover. The cylinder is connected to the rotary positioning pin through its cylinder rod. The rotary positioning pin positions the rotary worktable through the telescopic drive of the cylinder rod. Since this device includes a rotary positioning column, a rotary positioning fixing frame, a rotary support bearing fixing frame, a rotary positioning pin, an end cover, a rotary positioning sleeve, a cylinder, a bolt-type roller bearing, a dust-proof ring, screws, spring washers, flat washers, a grease cup (stainless steel), etc., its working principle is as follows: The rotary positioning fixing frame and the rotary support bearing fixing frame are fixedly connected to the rotary positioning column through screws, spring washers, and flat washers; the bolt-type roller bearing is installed on the rotary support bearing fixing frame, and the bolt-type roller bearing can provide a supporting effect on the rotary worktable. The cylinder and the rotary positioning sleeve are installed on the rotary positioning fixing frame through screws, spring washers, and flat washers; the end cover is connected to the rotary positioning sleeve through screws and spring washers. The cylinder rod is connected to the rotary positioning pin, and the positioning of the rotary worktable is achieved through the extension and retraction of the cylinder. At the same time, when multiple sand box devices of the HMT multi-station molding machine are exchanged at the molding station and the core setting station; they need to be fixed on the rotary worktable and rotated around the rotary axis. When determining the precise initial position of the sand box at the molding station, the bolt-type roller bearing in the rotary positioning device can provide a supporting effect on the rotary worktable. The rotary positioning pin precisely cooperates with the rotary positioning sleeve of the rotary worktable through the extension and retraction actions of the cylinder to accurately position. A rotary positioning support device disclosed in this device is convenient to use. The front end of the rotary positioning pin is a conical surface, which has convenient positioning (taper), accurate and reliable positioning (large contact area), and can also provide a supporting effect on the rotary worktable (bolt-type roller bearing); the design structure is simple, saving working hours, easy to disassemble and assemble. It has a long service life; the design is scientific and reasonable, does not require an oil cylinder power supply, avoids oil leakage, and this device has precise positioning and effectively reduces damage.

[0012] 2. In this patent, the rotary positioning pin is lubricated through the grease cup. Since the grease cup is installed on the rotary positioning sleeve, the rotary positioning pin can be lubricated through the grease cup.

[0013] 3. This patent uses the rotary positioning pin to telescopically pass through the inner hole of the end cover, and an oil film is formed between the rotary positioning pin and the inner hole of the end cover. Since lubricating oil can be added to the rotary positioning pin through a grease cup, it is ensured that an oil film is formed between the rotary positioning pin and the inner hole of the end cover to reduce the wear between the two, thereby prolonging the service life of the rotary positioning pin.

[0014] 4. This patent uses a grease cup with an oil injection hole, and a dust-proof ring is provided on the oil injection hole to effectively prevent dust from invading through the dust-proof ring.

[0015] 5. The front end of the rotary positioning pin in this patent is a conical surface. Due to its convenient use, the front end of the rotary positioning pin is a conical surface, which has convenient positioning (taper), accurate and reliable positioning (large contact area), and can provide a supporting effect on the rotary table (bolt-type roller bearing).

[0016] 6. This patent uses a bolt-type roller bearing to be tightly connected and fixed with a rotary support bearing fixing frame through its own nut and spring washer. The end cover is connected to the rotary positioning sleeve through screws and spring washers. The rotary positioning pin is fixedly connected to the cylinder through the thread at the end of the cylinder rod and a nut, and is matched with the inner hole of the end cover. This design has a simple structure, saves working hours, is easy to disassemble and assemble, and has a long service life. The design is scientific and reasonable, does not require an oil cylinder power supply, and avoids oil leakage. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a rotary positioning device of the present utility model;

[0018] Figure 2 is an overall schematic diagram of a rotary positioning device of the present utility model; Detailed Embodiment

[0019] The following further describes the present utility model in conjunction with the drawings:

[0020] In the figure: 1. Rotary positioning column, 2. Screw, 3. Spring washer, 4. Flat washer, 5. Rotary positioning fixing frame, 6. Rotary support bearing fixing frame, 7. Cylinder, 8. Grease cup (stainless steel), 9. Rotary positioning sleeve, 10. Dust-proof ring, 11. Rotary positioning pin, 12. Bolt-type roller bearing, 13. End cover. Embodiment

[0021] This embodiment: As Figure 1 、 2As shown in the figure, a rotary positioning device includes a rotary positioning column 1. The rotary positioning column 1 vertically supports a rotary support bearing fixing frame 6 and a rotary worktable at one end of a rotary positioning fixing frame 5. The rotary support bearing fixing frame 6 axially fixes a bolt-type roller bearing 12. The bolt-type roller bearing 12 is axially connected to the rotary worktable. The other end of the rotary positioning fixing frame 5 fixes a cylinder 7. A rotary positioning sleeve 9 is fixed outside the cylinder rod of the cylinder 7. The rotary positioning sleeve 9 fixes an end cover 13. The cylinder 7 connects a rotary positioning pin 11 through its cylinder rod. The rotary positioning pin 11 positions the rotary worktable through the telescopic drive of the cylinder rod.

[0022] Lubricating oil is filled into the rotary positioning pin 11 through a grease cup 8.

[0023] The rotary positioning pin 11 telescopically passes through the inner hole of the end cover 13, and an oil film is formed between the rotary positioning pin 11 and the inner hole of the end cover 13.

[0024] The grease cup 8 is provided with an oil injection hole, and the oil injection hole is provided with a dust-proof ring 10.

[0025] The front end of the rotary positioning pin 11 is a conical surface.

[0026] Working principle:

[0027] In this patent, the rotating positioning column vertically supports the rotating support bearing fixing frame and the rotating worktable through one end of the rotating positioning fixing frame. The rotating support bearing fixing frame axially fixes a bolt-type roller bearing, and the bolt-type roller bearing is axially connected to the rotating worktable. The other end of the rotating positioning fixing frame fixes a cylinder. A rotating positioning sleeve is fixed outside the cylinder rod of the cylinder, and an end cover is fixed to the rotating positioning sleeve. The cylinder is connected to a rotating positioning pin through its cylinder rod. The rotating positioning pin drives the positioning of the rotating worktable through the telescopic movement of the cylinder rod. Since this device includes a rotating positioning column, a rotating positioning fixing frame, a rotating support bearing fixing frame, a rotating positioning pin, an end cover, a rotating positioning sleeve, a cylinder, a bolt-type roller bearing, a dust-proof ring, screws, spring washers, plain washers, a grease cup (stainless steel), etc., its working principle is as follows: The rotating positioning fixing frame and the rotating support bearing fixing frame are fixedly connected to the rotating positioning column through screws, spring washers, and plain washers; the bolt-type roller bearing is installed on the rotating support bearing fixing frame, and the bolt-type roller bearing can provide a supporting effect on the rotating worktable. The cylinder and the rotating positioning sleeve are installed on the rotating positioning fixing frame through screws, spring washers, and plain washers; the end cover is connected to the rotating positioning sleeve through screws and spring washers. The cylinder rod is connected to the rotating positioning pin, and the positioning of the rotating worktable is achieved through the extension and retraction of the cylinder. At the same time, when multiple sand box devices of the HMT multi-station molding machine are exchanged at the molding station and the core-setting station; they need to be fixed on the rotating worktable and rotate around the rotating axis. When determining the precise initial position of the sand box at the molding station, the bolt-type roller bearing in the rotating positioning device can provide a supporting effect on the rotating worktable. The rotating positioning pin precisely cooperates with the rotating positioning sleeve of the rotating worktable through the extension and retraction actions of the cylinder to achieve accurate positioning; A rotating positioning and supporting device disclosed by this device is convenient to use. The front end of the rotating positioning pin is a conical surface, which has convenient positioning (taper), accurate and reliable positioning (large contact area), and can provide a supporting effect on the rotating worktable (bolt-type roller bearing); The design structure is simple, time-consuming is saved, and it is easy to disassemble and assemble. It has a long service life; The design is scientific and reasonable, does not require an oil cylinder power supply, and avoids oil leakage. The utility model solves the problem that the existing technology has that the rotating worktable cannot be accurately positioned, resulting in damage to the inner cavity of the sand mold when the pattern plate is separated from the sand mold, ultimately affecting the quality of the casting product, and has the beneficial technical effects of accurate positioning and effectively reducing damage.

[0028] Any technical solution that utilizes the technical solution of the present utility model, or is designed by those skilled in the art inspired by the technical solution of the present utility model and achieves the above technical effects, falls within the protection scope of the present utility model.

Claims

1. A rotary positioning device, characterized in that, It includes a rotating positioning column, and the rotating positioning column vertically supports a rotating support bearing fixing frame and a rotating workbench through one end of a rotating positioning fixing frame. The rotating support bearing fixing frame axially fixes a bolt-type roller bearing, and the bolt-type roller bearing is axially connected to the rotating workbench. The other end of the rotating positioning fixing frame fixes a cylinder, and a rotating positioning sleeve is fixed outside the cylinder rod of the cylinder. The rotating positioning sleeve fixes an end cover, and the cylinder is connected to a rotating positioning pin through its cylinder rod. The rotating positioning pin positions the rotating workbench through the telescopic drive of the cylinder rod.

2. The rotary positioning device according to claim 1, characterized in that, Lubricating oil is added to the rotating positioning pin through a grease cup.

3. A rotary positioning device according to claim 2, characterized in that, The rotating positioning pin telescopically passes through the inner hole of the end cover, and an oil film is formed between the rotating positioning pin and the inner hole of the end cover.

4. A rotary positioning device according to claim 2, wherein, The grease cup is provided with an oil injection hole, and the oil injection hole is provided with a dust-proof ring.

5. A rotary positioning device according to claim 1, characterized in that, The front end of the rotating positioning pin is a conical surface.

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