Automatic flash and burr removing machining-free device for circular casting

Abstract

The invention discloses an automatic flash and burr removing machining-free device for round castings, and belongs to the technical field of casting polishing. The automatic flash and burr removing machining-free device comprises a feeding device, a punching tool is arranged above the conveying tail end of the feeding device and installed at the bottom of a punching machine lifting base, and a grinding tool is arranged below the conveying tail end of the feeding device and installed at the bottom of the punching machine lifting base; the grinding tool is fixedly installed above the machine table, a linkage device is installed between the feeding device and the punching machine lifting base, a protective cover is arranged outside the linkage device, the grinding tool and the punching tool, and the top of an inner cavity of the protective cover is connected with a dust removal device through a negative pressure air suction pipeline. Flanges and burrs of castings can be automatically and accurately polished through the punching effect of a punching machine, meanwhile, continuous and automatic feeding and discharging are achieved, operators do not need to hold the castings by hand for operation, the labor intensity is reduced, the labor efficiency is improved, the intrinsic safety degree of operation is improved, and pollution of dust to the environment can be reduced.

Description

Technical Field

[0001] The invention relates to a circular casting automatic deburring and processing-free device, belonging to the technical field of casting grinding. Background Art

[0002] In the pipe casting processing industry, the traditional production process is to clean the residual burrs generated when the pouring and riser connection parts of the pipe fittings are separated during the casting process, and the large flash and burrs generated by the joint seam at the casting parting surface are cleaned by a grinding machine, and then the connecting surfaces between the pipe fittings and pipelines or other pipe fittings are processed by lathe.

[0003] At present, after the casting of pipe fittings is completed, the large flash and burrs at the pouring and riser and the parting surface are polished away by a grinding machine, and then the slight flash and burrs on the mating surface are cleaned away by a sanding machine. This processing method relies on manual holding of the pipe fitting to be polished and contacting it with the grinding wheel and the sanding belt, and is achieved through grinding. Practice has shown that this processing method has the following technical problems: 1. The instability of manual control of the hand-held force and the contact time between the grinding surface and the grinding wheel and the grinding belt leads to inaccurate control of the grinding amount, resulting in excessive grinding waste; 2. Sparks fly during grinding, posing a great safety hazard; 3. The grinding process generates dust, causing environmental pollution and harm to operators; 4. Handheld operation will result in high labor intensity and low production efficiency.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the deficiencies in the background technology, the present invention provides a device for automatically removing burrs and processing-free circular castings. The device can utilize the punching action of a punch press to automatically and accurately grind the burrs and flashes of the castings, while realizing continuous automatic loading and unloading without the need for operators to hold the castings for operation. Due to the guarantee of dimensional accuracy, the original machined surface of the casting can be changed into a processing-free structure, thereby reducing the thickness of the original machined surface of the casting, saving energy and reducing consumption, avoiding the state of sparks flying due to rotating grinding of grinding wheels and grinding belts, reducing labor intensity, improving labor efficiency, improving the inherent safety of operation, and reducing dust pollution to the environment.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A device for automatically removing burrs and processing-free round castings comprises a feeding device, a stamping tool is provided above the conveying end of the feeding device, the stamping tool is installed at the bottom of a punch press lifting seat, a grinding tool is provided below the conveying end of the feeding device, the grinding tool is fixedly installed above the machine table, a linkage device is installed between the feeding device and the punch press lifting seat, a protective cover is provided outside the linkage device, the grinding tool and the stamping tool, and the top of the inner cavity of the protective cover is connected to a dust removal device through a negative pressure suction pipe.

[0007] Furthermore, the feeding device includes a first conveying channel with a slope, the top of the first conveying channel is connected to the vibrating feeding tray, the bottom of the first conveying channel is connected to the horizontally arranged second conveying channel, and the first conveying channel and the second conveying channel are both U-shaped structures, and the two are arranged in communication. Furthermore, a circular punching hole is opened at the bottom of the conveying end of the second conveying channel, and a V-shaped positioning block is installed on the side of the punching hole, and the V-shaped opening of the positioning block faces the direction of the circular casting; the bottom of the second conveying channel is connected to the machine through a support arm.

[0008] Furthermore, a channel width adjustment device is provided on one side of the first conveying channel; channel width adjustment devices are provided on both sides of the second conveying channel; the adjustment device consists of an inner adjustment plate and a plurality of outer adjustment bolts and nuts; two guide strips arranged opposite to each other are installed on the top of the adjustment plate in the second conveying channel.

[0009] Furthermore, the linkage device comprises two connecting rods arranged at an angle in the longitudinal direction, the bottom end of the lower connecting rod is hinged with a V-shaped stopper, the stopper is located in the second conveying channel, and the V-shaped opening of the stopper faces the circular casting at the end of the lower connecting rod; The inner ends of the two connecting rods facing each other are both inserted into the first rotating shaft and fixed by nuts. The two ends of the first rotating shaft are respectively inserted into the stroke adjustment holes on the top of the first ear plate. The first ear plate is fixedly installed on both sides of the end of the second conveying channel. The stroke adjustment holes are arranged in the first ear plate in a transverse direction. Both ends of the first rotating shaft are rotatably mounted on the stroke adjustment plates, and the two stroke adjustment plates are located on the opposite outer sides of the two first ear plates; the side of the stroke adjustment plate is fixedly connected to one end of the adjustment screw, and the other end of the adjustment screw is inserted into the fixed block on the side of the first ear plate, and the connection between the adjustment screw and the fixed block is fastened by a double nut; The top end of the upper connecting rod is slidably arranged in the second rotating shaft, the second rotating shaft is rotatably installed in two second ear plates arranged side by side, and the second ear plates are fixedly connected to the bottom of the punch press lifting seat.

[0010] Furthermore, the stamping tooling is composed of a clamping component and a punch, and the punch is connected to the bottom of the punch press lifting seat through the clamping component.

[0011] Furthermore, the grinding tooling includes a knife plate, the knife plate is made of heat-treated die steel, a circular grinding hole is opened in the middle of the knife plate, and the grinding hole is arranged to penetrate the knife plate in the longitudinal direction.

[0012] Furthermore, the knife plate is connected to two supporting seats arranged side by side at its bottom by bolts, and fixing plates are welded at both ends of the supporting seats, and the fixing plates install the stamping tooling on the machine platform.

[0013] Furthermore, the punch press lifting seat is located on the side of the punch press body, and the machine platform is located directly below the punch press lifting seat; a blanking hole is provided in the middle of the machine platform, which is used for blanking circular castings, and an inclined receiving tray is fixedly installed at the bottom of the machine platform.

[0014] Furthermore, the protective cover is provided with double doors, and the double doors are provided with transparent observation windows.

[0015] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention utilizes the punching effect of a punch press, and the punching tool punches the circular casting into the circular grinding hole of the special grinding tool. The cutting edge of the grinding tool can realize the function of automatically and accurately grinding the flash and burrs of the processing part. Compared with the grinding by the grinding wheel and the grinding belt machine in the prior art, the operation steps are saved, the production efficiency is significantly improved, and the waste caused by excessive grinding due to inaccurate control of the grinding amount is avoided. Due to the guarantee of dimensional accuracy, the original processing surface of the casting can be changed into a processing-free structure, the thickness of the original processing surface of the casting is reduced, and energy saving and consumption reduction are reduced. The linkage device in the present invention cooperates with the feeding device to deliver the circular castings to be ground into the punching holes one by one, thereby realizing automatic feeding; during the downward movement of the punching tool, the castings are punched into the circular grinding holes of the grinding tool, and the castings leak out from the lower part of the grinding tool into the receiving tray, and the castings are transported from the bottom end of the receiving tray to the turnover basket, thereby realizing automatic unloading; During the entire grinding process, the operator does not need to hold the casting to operate, which avoids the state of sparks flying when the grinding wheel and abrasive belt rotate and grinds, reduces labor intensity, improves labor efficiency, and improves the safety of the operation process; The dust generated during the grinding process enters the dust removal device through the negative pressure suction duct on the top of the protective cover for centralized treatment, thus preventing the dust from causing environmental pollution and harm to the operator.

[0016] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention after removing the protective cover; Figure 3 yes Figure 2 A magnified view of the local structure; Figure 4 yes Figure 3 A schematic cross-sectional view of the middle structure along the longitudinal direction; Figure 5 It is a structural schematic diagram of the feeding device in the present invention; Figure 6 It is a structural schematic diagram of the linkage device in the present invention; Figure 7 is a schematic diagram of the structure of the linkage device in the present invention along another direction; Figure 8 It is a schematic diagram of the structure of the grinding tool in the present invention.

[0018] In the figure, 1-feeding device, 11-first conveying channel, 12-second conveying channel, 13-vibrating feeding plate, 14-support arm, 15-punching hole, 16-positioning block, 17-guide pressure strip, 18-adjusting plate, 19-adjusting bolt and nut; 2-linkage device, 21-connecting rod, 22-first rotating shaft, 23-first ear plate, 24-stopper, 25-second rotating shaft, 26-second ear plate, 27-stroke adjustment hole , 28-stroke adjustment plate, 29-adjusting screw, 210-fixed block; 3-grinding tool, 31-knife plate, 32-grinding hole, 33-support seat, 34-fixed plate; 4-stamping tool, 41-clamping parts, 42-punch; 5-receiving tray; 6-dust removal device, 61-negative pressure suction pipe; 7-punch, 71-punch lifting seat, 72-machine table, 73-blank hole; 8-protective cover, 81-double door. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0020] like Figure 1-Figure 8 As shown together, the present invention provides a circular casting automatic deburring and processing-free device, including a feeding device 1, a punching tool 4 is provided above the conveying end of the feeding device 1, and the punching tool 4 is installed at the bottom of the punch press lifting seat 71, a grinding tool 3 is provided below the conveying end of the feeding device 1, and the grinding tool 3 is fixedly installed above the machine table 72, a linkage device 2 is installed between the feeding device 1 and the punch press lifting seat 71, and a protective cover 8 is provided on the outside of the linkage device 2, the grinding tool 3 and the punching tool 4, and the top of the inner cavity of the protective cover 8 is connected to the dust removal device 6 through a negative pressure suction pipe 61.

[0021] The punch press lifting seat 71 is located at the side of the punch press 7 body, and the machine platform 72 is located directly below the punch press lifting seat 71 .

[0022] The feeding device 1 includes a first conveying channel 11 with a slope, the top of the first conveying channel 11 is connected to a vibrating feeding tray 13, and the bottom of the first conveying channel 11 is connected to a horizontally arranged second conveying channel 12. The first conveying channel 11 and the second conveying channel 12 are both U-shaped structures, and the two are arranged in communication.

[0023] The circular casting to be ground automatically enters the first conveying channel 11 and the second conveying channel 12 in sequence from the vibrating loading tray 13 .

[0024] The bottom of the second conveying channel 12 is connected to the machine table 72 through the support arm 14; a circular punching hole 15 is provided at the bottom of the conveying end of the second conveying channel 12, through which the round casting enters the grinding fixture 3. A positioning block 16 is installed on the side of the punching hole 15. The positioning block 16 is preferably V-shaped, but not limited to V-shaped, and can also be various shapes such as arc, square, rectangle, etc. The V-shaped opening of the positioning block 16 faces the casting. The positioning block 16 can be adjusted and replaced, and different sizes are set according to different series and different sizes of round castings.

[0025] A channel width adjustment device is provided on one side of the first conveying channel 11, and the width of the channel can be adjusted according to the outer diameter of different circular castings to be processed. The adjustment device is composed of an inner adjustment plate 18 and a plurality of outer adjustment bolts and nuts 19. By tightening or loosening the adjustment bolts and nuts 19, the width of the channel formed between the adjustment plate 18 and the first conveying channel 11 can be adjusted.

[0026] The second conveying channel 12 is provided with channel width adjustment devices on both sides, and the width of the channel can be adjusted according to the outer diameter of different circular castings to be processed. The adjustment device is composed of an inner adjustment plate 18 and a plurality of outer adjustment bolts and nuts 19. By tightening or loosening the adjustment bolts and nuts 19, the width of the distance between the two side adjustment plates 18 is adjusted, and at the same time, the center line position of the two side adjustment plates 18 remains unchanged and is always at the center position of the punching hole 15.

[0027] Two guide strips 17 arranged opposite to each other are installed on the top of the adjustment plate 18 in the second conveying channel 12 . The guide strips 17 are used to ensure that the round castings are smoothly conveyed in the second conveying channel 12 .

[0028] The punching tool 4 is composed of a clamping component 41 and a punch 42, and the punch 42 is connected to the bottom of the punch press lifting seat 71 through the clamping component 41. The punch 42 of circular castings with different calibers is selected in different types.

[0029] The grinding tool 3 includes a blade 31 made of heat-treated mold steel. A circular grinding hole 32 is opened in the middle of the blade 31. The grinding hole 32 penetrates the blade 31 in the longitudinal direction. Different circular castings are equipped with blades 31 with different apertures.

[0030] The knife plate 31 is connected to two supporting seats 33 arranged side by side at its bottom by bolts. Both ends of the supporting seats 33 are welded with fixing plates 34 , and the fixing plates 34 install the stamping tool 4 on the machine table 72 .

[0031] The circular casting is punched into the circular grinding hole 32 of the blade 31 by the punch 42, and the upper edge of the grinding hole 32 grinds off the flash and burrs around the casting to complete the grinding and cutting action. After the upper aperture of the blade 31 is ground larger after long-term use, the blade 31 can be cut down and then continued to be used until the blade 31 is ground and scrapped, and then a new blade 31 can be replaced. The support seat 33 is universal for all models of blades 31.

[0032] A material drop hole 73 is provided in the middle of the machine table 72 for dropping round castings. An inclined receiving tray 5 is fixedly mounted at the bottom of the machine table 72 , and the castings after stamping and grinding fall into the receiving tray 5 from the material drop hole 73 .

[0033] The linkage device 2 moves along with the punch press lifting seat 71 to deliver the round castings into the punch holes 15 one by one.

[0034] The linkage device 2 includes two connecting rods 21 arranged at an angle along the longitudinal direction, and a stopper 24 is hinged at the bottom end of the lower connecting rod 21. The shape of the stopper 24 is preferably V-shaped, but is not limited to V-shaped, and can also be various shapes such as arc, square, rectangle, etc. The stopper 24 can be adjusted and replaced, and different sizes are set according to different series and different sizes of circular castings. The stopper 24 is located in the second conveying channel 12, and the V-shaped opening of the stopper 24 faces the direction of the circular casting at the end of the lower connecting rod 21.

[0035] The facing inner ends of the two connecting rods 21 are both inserted into the first rotating shaft 22 and fixed by nuts. The two ends of the first rotating shaft 22 are respectively inserted into the stroke adjustment hole 27 at the top of the first ear plate 23. The first ear plate 23 is fixedly installed on both sides of the end of the second conveying channel 12. The stroke adjustment hole 27 is horizontally arranged in the first ear plate 23; the distance between the stopper 24 and the punching hole 15 is adjusted by the horizontal sliding of the first rotating shaft 22 in the stroke adjustment hole 27.

[0036] Both ends of the first rotating shaft 22 are rotatably mounted on the stroke adjustment plate 28, and the two stroke adjustment plates 28 are located on the opposite outsides of the two first ear plates 23; the side of the stroke adjustment plate 28 is fixedly connected to one end of the adjusting screw 29, and the other end of the adjusting screw 29 is inserted into the fixed block 210 on the side of the first ear plate 23, and the connection between the adjusting screw 29 and the fixed block 210 is fastened by a double nut, and the position of the first rotating shaft 22 is adjusted by the double nut.

[0037] The top end of the upper connecting rod 21 is slidably inserted into the second rotating shaft 25, and the second rotating shaft 25 is rotatably installed in two second ear plates 26 arranged side by side, and the second ear plates 26 are fixed to the bottom of the punch press lifting seat 71. When the first rotating shaft 22 slides horizontally, it drives the upper connecting rod 21 to slide in the second rotating shaft 25, and automatically adjusts the horizontal travel distance of the upper connecting rod 21.

[0038] The protective cover 8 is provided with a double-opening door 81, and a transparent observation window is provided on the double-opening door 81. By providing the double-opening door 81, a convenient operation channel is provided while maintaining necessary safety protection. The dust generated during the grinding process enters the dust removal device 6 through the negative pressure suction pipe 61 on the top of the protective cover 8 for centralized treatment, thereby avoiding environmental pollution caused by dust and harm to the operator.

[0039] The specific working principle of the present invention is: The round casting to be ground automatically enters the first sloped conveying channel 11 from the vibrating loading tray 13 and waits; The punch lift 71 of the punch press 7 drives the punching fixture 4 downward, and the punch 42 punches the casting in the punching hole 15 into the circular grinding hole 32 of the grinding fixture 3, and the casting leaks out from the lower part of the grinding fixture 3; During the downward movement of the punching tool 4, the punch press lifting seat 71 drives the upper connecting rod 21 of the linkage device 2 downward, drives the lower connecting rod 21 to retreat to a position away from the punching hole 15, and the lower connecting rod 21 drives the end block 24 to move to the right, and the casting on the first conveying channel 11 automatically slides to the second conveying channel 12; After punching the casting, the punching tool 4 moves upward, and the upper connecting rod 21 moves upward to drive the lower connecting rod 21 to move toward the punching hole 15, pushing the casting on the second conveying channel 12 into the punching hole 15, and at the same time, the stopper 24 blocks the casting on the first conveying channel 11 from sliding onto the second conveying channel 12; The castings after stamping and grinding fall into the receiving tray 5, and the castings are transported from the bottom of the receiving tray 5 to the turnover basket, and the cleaning and grinding work is completed; The dust generated during the grinding process is collected in the protective cover 8 and enters the dust removal device 6 through the negative pressure suction pipe 61 for centralized treatment, thereby avoiding environmental pollution and harm to the operator.

[0040] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A device for automatically removing burrs from circular castings without machining, characterized in that: The invention comprises a feeding device (1), wherein a punching tool (4) is provided above the conveying end of the feeding device (1), and the punching tool (4) is installed at the bottom of a punch press lifting seat (71); a grinding tool (3) is provided below the conveying end of the feeding device (1), and the grinding tool (3) is fixedly installed above a machine table (72); a linkage device (2) is installed between the feeding device (1) and the punch press lifting seat (71); a protective cover (8) is provided outside the linkage device (2), the grinding tool (3) and the punching tool (4); and the top of the inner cavity of the protective cover (8) is connected to a dust removal device (6) via a negative pressure suction pipe (61).

2. The automatic deburring and processing-free device for circular castings according to claim 1, characterized in that: The loading device (1) comprises a first conveying channel (11) with a slope, the top of the first conveying channel (11) is connected to a vibrating loading tray (13), the bottom of the first conveying channel (11) is connected to a horizontally arranged second conveying channel (12), and the first conveying channel (11) and the second conveying channel (12) are both U-shaped structures and are arranged in communication with each other.

3. The automatic deburring and processing-free device for circular castings as claimed in claim 2, characterized in that: A circular punching hole (15) is provided at the bottom of the conveying end of the second conveying channel (12), a V-shaped positioning block (16) is installed on the side of the punching hole (15), and the V-shaped opening of the positioning block (16) faces the direction of the circular casting; the bottom of the second conveying channel (12) is connected to the machine platform (72) via a support arm (14).

4. The automatic deburring and processing-free device for circular castings as claimed in claim 3, characterized in that: A channel width adjustment device is provided on one side of the first conveying channel (11); channel width adjustment devices are provided on both sides of the second conveying channel (12); the adjustment device comprises an inner adjustment plate (18) and a plurality of outer adjustment bolts and nuts (19); Two guide strips (17) arranged opposite to each other are installed on the top of the adjustment plate (18) in the second conveying channel (12).

5. The automatic deburring and processing-free device for circular castings as claimed in claim 4, characterized in that: The linkage device (2) comprises two connecting rods (21) arranged at an angle in the longitudinal direction, a V-shaped stopper (24) is hingedly connected to the bottom end of the lower connecting rod (21), the stopper (24) is located in the second conveying channel (12), and the V-shaped opening of the stopper (24) faces the direction of the circular casting at the end of the lower connecting rod (21); The inner ends of the two connecting rods (21) facing each other are both inserted into the first rotating shaft (22) and fixed by nuts. The two ends of the first rotating shaft (22) are respectively inserted into the stroke adjustment holes (27) at the top of the first ear plate (23). The first ear plate (23) is fixedly mounted on both sides of the end of the second conveying channel (12). The stroke adjustment holes (27) are arranged in the first ear plate (23) in a transverse direction. Both ends of the first rotating shaft (22) are rotatably mounted on a stroke adjustment plate (28), and the two stroke adjustment plates (28) are located on the opposite outer sides of the two first ear plates (23); the side of the stroke adjustment plate (28) is fixedly connected to one end of an adjustment screw (29), and the other end of the adjustment screw (29) is inserted into a fixed block (210) on the side of the first ear plate (23), and the connection between the adjustment screw (29) and the fixed block (210) is fastened by a double nut; The top end of the upper connecting rod (21) is slidably inserted into the second rotating shaft (25), and the second rotating shaft (25) is rotatably mounted in two second ear plates (26) arranged side by side. The second ear plates (26) are fixedly connected to the bottom of the punch press lifting seat (71).

6. The automatic deburring and processing-free device for circular castings according to claim 1, characterized in that: The punching tool (4) is composed of a clamping component (41) and a punch (42), and the punch (42) is connected to the bottom of the punch press lifting seat (71) through the clamping component (41).

7. The automatic deburring and processing-free device for circular castings according to claim 1, characterized in that: The grinding tool (3) comprises a knife plate (31), the knife plate (31) is made of heat-treated die steel, a grinding hole (32) with a circular structure is opened in the middle of the knife plate (31), and the grinding hole (32) is arranged to penetrate the knife plate (31) in the longitudinal direction.

8. The automatic deburring and machining-free device for circular castings as claimed in claim 7, characterized in that: The knife plate (31) is connected to two support seats (33) arranged side by side at its bottom by bolts, and fixing plates (34) are welded at both ends of the support seats (33), and the fixing plates (34) mount the stamping tool (4) on the machine table (72).

9. The automatic deburring and processing-free device for circular castings according to claim 1, characterized in that: The punch press lifting seat (71) is located on the side of the punch press (7) body, and the machine platform (72) is located directly below the punch press lifting seat (71); a material drop hole (73) is provided in the middle of the machine platform (72), and the material drop hole (73) is used for dropping round castings; and a tilted receiving tray (5) is fixedly mounted on the bottom of the machine platform (72).

10. The automatic deburring and machining-free device for circular castings according to claim 1, characterized in that: The protective cover (8) is provided with a split door (81), and the split door (81) is provided with a transparent observation window.

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