A control method for a fully automatic centrifugal casting device

Abstract

The present invention discloses a control method for a fully automatic centrifugal casting device, belonging to the field of centrifugal casting. A control method for a fully automatic centrifugal casting device includes Step 1: mold cleaning. The mold is transported to the cleaning station by a handling mechanism. The mold is driven to rotate by the cleaning station. At the same time, the cleaning device enters the mold to clean the inside of the mold; Step 2: mold spraying; Step 3: mold casting; Step 4: manual inspection; Step 5: mold tube pulling. After casting is completed, the cast mold is transported by a manipulator to the tube pulling station. The tube pulling cart moves to the set position. The tube pulling pliers tighten the workpiece inside the cast mold, and the workpiece inside the mold is pulled out. Through the integration of cleaning, spraying, casting, tube pulling, and cooling workstations for casting, the automatic control of the centrifugal casting device is realized, the work efficiency and product quality are improved, the manual participation is reduced, and the production cost is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal casting, and particularly relates to a control method for a fully automatic centrifugal casting device. Background Art

[0002] The centrifugal casting method is a method for forming tubular or hollow cylindrical products by using centrifugal force. A quantitative liquid resin or resin dispersion is placed in a rotating mold, and it is rotated at a high speed around a single axis. At this time, the placed material is forced by the centrifugal force to be distributed in the vicinity of the wall of the mold;

[0003] The current centrifugal casting device has two working stations, that is, one station is for casting and the other station is for detecting the finished product. Casting, cooling, demoulding, brushing, and spraying are carried out at the same station. As a result, when centrifugal casting is carried out, the cylindrical mold can only perform operations such as casting, cooling, demoulding, brushing, and spraying at one station, greatly reducing the working efficiency of the centrifugal casting device and having poor quality control. Summary of the Invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a control method for a fully automatic centrifugal casting device. By integrating the cleaning, spraying, casting, tube pulling, and cooling workstations for casting, the automatic control of the centrifugal casting device is realized, the working efficiency and product quality are improved, the manual participation is reduced, and the production cost is lowered.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A control method for a fully automatic centrifugal casting device includes the following steps:

[0007] Step 1: Mold cleaning. The mold is transported to the cleaning workstation by a handling mechanism. The mold is rotated by the cleaning workstation, and at the same time, the cleaning device enters the mold to clean the inside of the mold;

[0008] Step 2: Mold spraying. The cleaned mold is transported to the spraying workstation by the handling mechanism. The mold is rotated by the spraying workstation, and at the same time, the spraying vehicle sends the spray gun to the front end of the cleaned mold. The spray gun retreats for spraying, and a thickness detection device is provided on the spray gun to automatically detect the spraying thickness;

[0009] Step 3: Mold casting. After the spraying thickness is detected to be qualified, the sprayed mold is transported by a manipulator to the casting workstation for rotation, and the casting trolley is started to cast the sprayed mold;

[0010] Step 4: Manual inspection. For the sprayed molds with unqualified spraying thickness, the sprayed molds are transported to the inspection station by the manipulator. Manually check whether the sprayed molds can be cast. If the manual inspection is qualified, the sprayed molds are transported to Step 3 for casting by the manipulator. If the manual inspection is unqualified, the PASS function is activated.

[0011] Step 5: Mold tube extraction. After casting is completed, the cast mold is transported by the manipulator to the tube extraction station. The tube extraction vehicle moves to the set position, and the tube extraction pliers tighten the workpiece inside the cast mold, and then the workpiece inside the mold is pulled out.

[0012] Step 6: Mold cooling. After the tube extraction is completed, the tube-extracted mold is sent to the cooling station by the handling mechanism. The cooling station drives the tube-extracted mold to rotate, and at the same time sprays water to cool the tube-extracted mold, completing one casting.

[0013] As a further solution of the present invention: In Step 1, the cleaning device includes a hollow tube. Two groups of crosses are fixedly connected to the outer wall of the hollow tube. A brush is fixedly connected between the two groups of crosses. There are two groups of brushes and they are arranged oppositely. The brush moves into the mold and cleans the mold by rotating in the opposite direction to the rotation direction of the mold.

[0014] As a further solution of the present invention: Scrapers are fixedly connected to the two ends of the cross far from the brush. A cavity is formed inside the scraper. Through holes are arranged through the upper and lower sides of the cavity. The scraper and the brush move into the mold together. The inside of the mold is cleaned by the scraper, and at the same time, the impurities cleaned out are sucked through the through holes.

[0015] As a further solution of the present invention: In Step 2, the rotation speed of the mold is 600 r / min.

[0016] As a further solution of the present invention: In Step 2, the moving speed of the spray gun when retracting for spraying is multiple speeds, which are 20 mm / s, 205 mm / s, 175 mm / s, 175 mm / s, 175 mm / s, and 230 mm / s respectively.

[0017] As a further solution of the present invention: In Step 2, the spraying thickness is 0.7 - 0.9 mm, and the spraying drying time is 10S.

[0018] As a further solution of the present invention: In Step 4, the PASS function is that the sprayed mold still circulates at each station but does not perform the corresponding actions until the PASS function is released manually.

[0019] The beneficial effects of the present invention:

[0020] 1. In the present invention, casting is carried out through the integration of cleaning, spraying, casting, tube drawing, and cooling workstations, realizing the automatic control of the centrifugal casting equipment, improving work efficiency and product quality, reducing manual participation, and lowering production costs.

[0021] 2. In the present invention, the hollow tube drives the scraper and the brush to rotate in the opposite direction to the mold. The scraper scrapes off the stubborn impurities attached to the inside of the mold, and at the same time, the impurities scraped off are sucked through the through holes and then discharged, reducing the residue of impurities in the mold. Then, the inner wall is brushed by the brush to further improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is the process flow chart of the present invention;

[0024] Figure 2 is the overall structural schematic diagram of the cleaning device of the present invention;

[0025] Figure 3 is the connection structure schematic diagram of the scraper and the brush in the present invention;

[0026] Figure 4 is the internal structural schematic diagram of the scraper in the present invention.

[0027] In the figure: 1. Cleaning table; 101. Fixed plate; 2. Lead screw; 201. Moving motor; 202. Slide block; 3. Fixed frame; 4. Hollow tube; 401. Cross; 402. Scraper; 4021. Cavity; 4022. Through hole; 4023. Connecting pipe; 403. Brush; 5. Rotating motor; 501. Gear set; 6. Collection box; 601. Suction pump; 602. Rotary joint; 603. Suction pipe; 604. Filter plate; 7. Limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1-4 shown, a control method for a fully automatic centrifugal casting equipment is characterized by including the following steps:

[0030] Step 1: Mold cleaning. The mold is transported to the cleaning station by the handling mechanism. The mold is driven to rotate by the cleaning station. Meanwhile, the moving motor 201 in the cleaning device is started. The moving motor 201 drives the lead screw 2 to rotate. The lead screw 2 drives the fixed frame 3 to move through the slider 202. The fixed frame 3 drives the scraper 402 and the brush 403 to enter the mold through the hollow tube 4. Then, the hollow tube 4 drives the scraper 402 and the brush 403 to rotate in the opposite direction to the mold to clean the inside of the mold.

[0031] Step 2: Mold spraying. The cleaned mold is transported to the spraying station by the handling mechanism. The mold is driven to rotate by the spraying station. Meanwhile, the spraying vehicle sends the spray gun to the front end of the cleaned mold. After the rotation speed of the cleaned mold reaches 600 r / min, the spray gun retreats and sprays. The moving speed of the spray gun during the retreat spraying is multiple speeds, which are 20 mm / s, 205 mm / s, 175 mm / s, 175 mm / s, 175 mm / s, and 230 mm / s respectively. After spraying is completed, the spray gun withdraws from the cleaned mold. At the same time, a thickness detection device is arranged on the spray gun to automatically detect the spraying thickness and judge whether the spraying thickness meets the process requirements of 0.7 - 0.9 mm. After spraying is completed, a drying time of 10S is carried out.

[0032] Step 3: Mold casting. After the spraying thickness detection is qualified, the sprayed mold is transported by the manipulator to the casting station for rotation. After the rotation speed of the sprayed mold at the casting station reaches the process requirements, a signal is sent to the casting trolley to start the casting trolley to cast the sprayed mold. The rotation of the mold at the casting station is controlled by the frequency converter.

[0033] Step 4: Manual inspection. For the sprayed mold with unqualified spraying thickness detection, the sprayed mold is transported to the inspection station by the manipulator. Manually check whether the sprayed mold can be cast. If the manual inspection is qualified, the sprayed mold is transported to Step 3 for casting by the manipulator. If the manual inspection is unqualified, the PASS function is started. The PASS function is to control the sprayed mold to circulate at each station but not execute the corresponding actions until the PASS function is released manually.

[0034] Step 5: Mold tube pulling. After casting is completed, the cast mold is transported by the manipulator to the tube pulling station. The tube pulling vehicle moves to the set position. The tube pulling pliers tighten the workpiece inside the cast mold and pull out the workpiece inside the mold.

[0035] Step 6: Mold cooling. After the extrusion is completed, the extruded mold is sent to the cooling station through the transport mechanism. The cooling station drives the extruded mold to rotate. While the extruded mold rotates, the temperature of the mold is measured by the temperature sensor. According to the temperature of the extruded mold, the time for spraying water to cool the surface of the extruded mold is calculated. After cooling is completed, the cooling water is turned off and the cooling station stops rotating. One casting is completed, and then the cooled mold is transferred to the cleaning station through the transport mechanism for cyclic casting operation.

[0036] In step one, the cleaning device includes a cleaning platform 1, fixed plates 101 are fixedly connected to both sides of the top of the cleaning platform 1, a screw rod 2 is rotatably connected between the two groups of fixed plates 101, a mobile motor 201 is fixedly connected to the fixed plate 101 at one time, the output end of the mobile motor 201 passes through the fixed plate 101 and is fixedly connected to the screw rod 2, a slider 202 is threadedly connected to the screw rod 2, a fixed frame 3 is fixedly connected to the top of the slider 202, a hollow tube 4 is rotatably connected inside the fixed frame 3, one end of the hollow tube 4 passes through the fixed frame 3 and is fixedly connected to two groups of crosses 401, two groups of ends of the cross 401 arranged opposite to each other are fixedly connected to a scraper 402 and a brush 403, a cavity 4021 is opened inside the scraper 402, through holes 4022 are opened on both sides of the cavity 4021, and the two groups of cavities 4021 are connected by a connecting pipe 4023 is connected with the hollow tube 4, and a rotating motor 5 is fixedly connected inside the fixed frame 3. The output end of the rotating motor 5 is connected to the hollow tube 4 through a gear set 501. The gear set 501 includes two sets of gears, and the two sets of gears are respectively fixedly connected to the hollow tube 4 and the output end of the rotating motor 5, and the two sets of gears are meshed with each other. The top outer wall of the fixed frame 3 is fixedly connected with a collecting box 6 and an air suction pump 601, and the air inlet end of the air suction pump 601 is connected with the collecting box 6. The end of the hollow tube 4 away from the cross 401 passes through the fixed frame 3 and is fixedly connected with a rotating joint 602. The rotating joint 602 is connected with the collecting box 6 through the suction pipe 603. A filter plate 604 is fixedly connected inside the collecting box 6. The top of the fixed plate 101 is fixedly connected with a limiting plate 7. The hollow tube 4 is arranged on the limiting plate 7 for sliding and rotating.

[0037] Working principle of the present invention: During cleaning, the mobile motor 201 is started to drive the lead screw 2 to rotate. The slider 202 threadedly connected to the lead screw 2 drives the fixed frame 3 to move. The hollow tube 4 on the fixed frame 3 drives the scraper 402 and the brush 403 on the cross 401 to move into the mold interior. Then, the rotary motor 5 and the suction pump 601 are started. The rotary motor 5 drives the hollow tube 4 to rotate through the gear set 501. The hollow tube 4 drives the scraper 402 and the brush 403 to rotate. The scraper 402 scrapes off the stubborn impurities adhering to the inner wall of the mold. At the same time, the brush 403 cleans the fine impurities inside the mold. At the same time, the suction pump 601 sucks air into the collection box 6 to generate negative pressure. The collection box 6 makes the interior of the hollow tube 4 generate negative pressure through the suction pipe 603 and the rotary joint 602. The hollow tube 4 makes the cavity 4021 generate negative pressure through the connecting pipe 4023. The cavity 4021 generates negative pressure suction through the through hole 4022, sucking the impurities scraped by the scraper 402 and the impurities cleaned by the brush 403 into the interior of the cavity 4021, and then sending them into the collection box 6 through the hollow tube 4. The impurities are blocked by the filter plate 604 in the collection box 6, and the impurities are collected in the collection box 6.

[0038] The above has described an embodiment of the present invention in detail, but the described content is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the patent coverage scope of the present invention.

Claims

1. A control method for a fully automatic centrifugal casting equipment, characterized in that, it includes the following steps: Step 1: Mold cleaning. The mold is transported to the cleaning station by the handling mechanism. The mold is driven to rotate by the cleaning station. At the same time, the cleaning device enters the mold to clean the inside of the mold. Step 2: Mold spraying. The cleaned mold is transported to the spraying station by the handling mechanism. The mold is driven to rotate by the spraying station. At the same time, the spraying vehicle sends the spray gun to the front end of the cleaned mold. The spray gun retreats for spraying. A thickness detection device is arranged on the spray gun to automatically detect the spraying thickness. Step 3: Mold casting. After the spraying thickness is detected to be qualified, the sprayed mold is transported by the manipulator to the casting station for rotation, and the casting trolley is started to cast the sprayed mold. Step 4: Manual inspection. For the sprayed mold with unqualified spraying thickness, the sprayed mold is transported to the inspection station by the manipulator. Manually check whether the sprayed mold can be cast. If the manual inspection is qualified, the sprayed mold is transported to Step 3 for casting by the manipulator. If the manual inspection is unqualified, the PASS function is started. Step 5: Mold tube pulling. After casting is completed, the cast mold is transported by the manipulator to the tube pulling station. The tube pulling vehicle moves to the set position. The tube pulling pliers tighten the workpiece inside the cast mold and pull out the workpiece inside the mold. Step 6: Mold cooling. After tube pulling is completed, the tube-pulled mold is sent to the cooling station by the handling mechanism. The cooling station drives the tube-pulled mold to rotate. At the same time, the tube-pulled mold is sprayed with water for cooling to complete one casting. In Step 1, the cleaning device includes a hollow tube (4). Two groups of cross-shaped frames (401) are fixedly connected to the outer wall of the hollow tube (4). A brush (403) is fixedly connected between the two groups of cross-shaped frames (401). There are two groups of brushes (403) and they are arranged oppositely. The brush (403) moves into the mold and cleans the mold by rotating in the opposite direction to the rotation direction of the mold. Scrapers (402) are fixedly connected to the two ends of the cross-shaped frame (401) far from the brush (403). A cavity (4021) is opened inside the scraper (402). Through holes (4022) are arranged through the upper and lower sides of the cavity (4021). The scraper (402) and the brush (403) move into the mold together. The inside of the mold is cleaned by the scraper (402), and at the same time, the through holes (4022) suck the impurities cleaned out.

2. A control method for a fully automatic centrifugal casting equipment according to claim 1, characterized in that, in Step 2, the rotation speed of the mold is 600 r / min.

3. A control method for a fully automatic centrifugal casting equipment according to claim 1, characterized in that, in Step 2, the moving speed of the spray gun retreating for spraying is multi-stage speeds, which are 20 mm / s, 205 mm / s, 175 mm / s, 175 mm / s, 175 mm / s, and 230 mm / s respectively.

4. A control method for a full-automatic centrifugal casting device according to claim 1, characterized in that, in step two, the spraying thickness is 0.7 to 0.9 mm, and the spraying drying time is 10 s.

5. A control method for a full-automatic centrifugal casting device according to claim 1, characterized in that, in step four, the PASS function is that the sprayed mold still circulates at each station, but does not perform the corresponding actions until the PASS function is manually released.

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