Sand core brushing device

Abstract

The invention provides a sand core brushing device which comprises a supporting column, the supporting column is fixed to one side of a dip-coating tank, the top end of the supporting column is fixedly connected to a gear motor, the output end of the gear motor is rotationally connected with a rotating shaft, the rotating shaft transversely penetrates through the space above the dip-coating tank to reach the other side of the dip-coating tank and is rotationally connected with a support of the rotating shaft, and a core supporting platform is fixedly connected to the rotating shaft. An inflatable adhesive tape is fixedly arranged on the upper end surface of the core supporting platform; a sand core grabbing assembly is fixedly connected to the upper portion of the core supporting platform through a connecting arm. According to the sand core brushing device, the core supporting platform is arranged, a sand core is grabbed to the core supporting platform in cooperation with the sand core grabbing assembly, the sand core is rapidly fixed in an air inflation mode through the air inflation rubber belt, then the core supporting platform is controlled by the gear motor to turn over at a low speed, and it can be guaranteed that after the sand core is brushed, the brushed surface is free of paint dripping and other defects; therefore, a plurality of sand cores can be brushed at a time, and the brushing efficiency and the brushing quality of the sand cores are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of sand core coating, in particular to a sand core coating device. Background Art

[0002] In the centrifugal casting ductile iron pipe production line, sand cores are generally used for socket forming. Sand cores are disposable products. One sand core is required for each ductile iron pipe produced, so the usage of sand cores is very large. In order to ensure the socket size, smooth inner surface, and no defects such as sticking, the working surface of the sand core needs to be brushed with high temperature resistant paint.

[0003] Generally, sand cores are painted by manual brushing and spraying. Manual brushing requires placing the sand core on a turntable and manually painting the outer surface. After completion, the sand core is manually transported to a designated location. This method is labor-intensive, has a harsh environment, and has low labor efficiency. Spraying involves hanging the sand core on a rotating rack, fixing the nozzle, and rotating the sand core to achieve external spraying. This method can only spray one sand core at a time, and requires multiple sprayings to ensure thickness, resulting in low efficiency. Summary of the invention

[0004] The object of the present invention is to provide a sand core coating device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sand core coating device, comprising:

[0007] A support column, wherein the support column is fixed on one side of the dipping tank, and the top end of the support column is fixedly connected to a reduction motor for fixing the reduction motor and supplying power at the same time, and the output end of the reduction motor is rotatably connected to a rotating shaft, and the rotating shaft crosses the upper space of the dipping tank to reach the other side of the dipping tank and is rotatably connected to the bracket of the rotating shaft, and a core supporting platform is fixedly connected to the rotating shaft for supporting the sand core to flip and contact with the dipping coating, and an inflatable tape is fixedly arranged on the upper end surface of the core supporting platform;

[0008] A sand core grabbing assembly is fixedly connected above the core supporting platform via a connecting arm.

[0009] Preferably, the sand core grabbing assembly comprises a lifting cylinder, which is fixed to the upper end surface of the connecting arm, and the output end of the lifting cylinder passes through the connecting arm to the bottom and is fixedly connected to the two-way oil cylinder.

[0010] Preferably, first guide rods are fixedly mounted on the upper end surfaces on both sides of the bidirectional oil cylinder, and the first guide rods are slidably connected to the connecting arms.

[0011] Preferably, core connecting arms are respectively installed at the output ends on both sides of the bidirectional oil cylinder, and the lower ends of the core connecting arms are slidably connected to the second guide rod, and the second guide rod is fixedly connected to the lower end surface of the bidirectional oil cylinder.

[0012] Preferably, a grab plate is fixedly connected to the lower end surface of the core connecting arm via bolts for grabbing the sand core.

[0013] Preferably, lifting cylinders are respectively installed at the four corners of the lower end surface of the dipping tank.

[0014] Preferably, the bottom of the inflatable tape is provided with an inflating nozzle, the inflating nozzle is fixedly connected to an air pipe extending from the inside of the core supporting platform, and the other end of the air pipe is connected to an external air source.

[0015] Preferably, the bottom end of the dipping tank is connected to the paint pump pipeline via a paint hose, and the paint pump is connected to the paint stirring tank pipeline via a hose.

[0016] Preferably, a stirrer is fixedly connected to the upper end surface of the paint stirring tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention, by setting a core supporting platform and cooperating with a sand core grabbing assembly, grabs the sand core onto the core supporting platform and quickly fixes the sand core by inflating it with an inflatable tape, and then controls the core supporting platform to slowly flip by a reduction motor, so as to ensure that after the sand core is painted, there is no defect such as paint dripping on the painted surface, thereby achieving painting of multiple sand cores at one time and ensuring the painting efficiency and quality of the sand core. At the same time, during the entire painting process, there is no need for staff to touch the sand core, and the equipment runs fully automatically, thereby greatly reducing work intensity and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Top view;

[0021] Figure 3 It is a front view of the sand core grabbing assembly of the present invention;

[0022] Figure 4 For the present invention Figure 3 Side view;

[0023] Figure 5 This is a schematic diagram of the sand core flipping and dipping process of the present invention.

[0024] In the figure: 1-sand core grabbing assembly; 2-sand core; 3-inflating tape; 4-inflating nozzle; 5-air pipe; 6-core supporting platform; 7-reduction motor; 8-rotating shaft; 9-dip paint; 10-pillar; 11-lifting cylinder; 12-dip coating tank; 13-paint hose; 14-paint pump; 15-paint mixing tank; 16-agitator; 17-lifting cylinder; 1701-connecting arm; 1702-first guide rod; 18-bidirectional oil cylinder; 19-core connecting arm; 1901-grabbing plate; 20-second guide rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figures 1 to 5 , the present invention provides a technical solution:

[0028] A sand core coating device, comprising:

[0029] A support column 10, wherein the support column 10 is fixed on one side of the dipping tank 12, and the top of the support column 10 is fixedly connected to the reduction motor 7, which is used to fix the reduction motor 7 and supply power at the same time. The output end of the reduction motor 7 is rotatably connected to a rotating shaft 8, and the rotating shaft 8 crosses the upper space of the dipping tank 12 to reach the other side of the dipping tank 12 and is rotatably connected to the bracket of the rotating shaft 8. A core supporting platform 6 is fixedly connected to the rotating shaft 8, which is used to carry the sand core 2 to flip and contact with the dipping coating 9, and an inflatable tape 3 is fixedly arranged on the upper end surface of the core supporting platform 6;

[0030] The top of the core supporting platform 6 is fixedly connected with a sand core grabbing assembly 1 via a connecting arm 1701 .

[0031] In this embodiment, a sand core grabbing assembly 1 is arranged above the core supporting platform 6, and a lifting cylinder 17 is arranged on the fixed connecting arm 1701, and the lower end of the lifting cylinder 17 is connected to the two-way oil cylinder 18. Because the output ends on both sides of the two-way oil cylinder 18 are respectively connected to the core connecting arms 19, when the lifting cylinder 17 drives the two-way oil cylinder 18 to stably lift and lower through the first guide rod 1702, the core connecting arm 19 also rises and falls with the two-way oil cylinder 18. At the same time, the lower end of the two-way oil cylinder 18 is fixedly connected to two second guide rods 20, and the lower end of the core connecting arm 19 is slidably connected to the second guide rod 20. When the two-way oil cylinder 18 is driven to operate, the core connecting arm 19 will be driven to move synchronously in both directions, thereby ensuring that the core connecting arm 19 moves symmetrically around the center of the sand core 2.

[0032] When the lifting cylinder 17 drives the grabbing plate 1901 at the lower end of the core connecting arm 19 to move to the lower surface of the sand core 2, when the lower surface is flush with the grabbing plate 1901, the two-way oil cylinder 18 contracts the core connecting arm 19 to the position of the sand core 2, so that the sand core grabbing assembly 1 completes the grabbing of the sand core 2, and then drives the lifting cylinder 17 to move downward, and places the sand core 2 on top of the inflatable tape 3 on the core supporting platform 6. At this time, the two-way oil cylinder 18 is driven to extend, driving the core connecting arm 19 to open, thereby loosening the grabbing of the sand core 2, and driving the lifting cylinder 17 to move upward to complete the loading of the sand core 2.

[0033] Specifically, the sand core grabbing assembly 1 includes a lifting cylinder 17 , which is fixed to the upper end surface of the connecting arm 1701 , and the output end of the lifting cylinder 17 passes through the connecting arm 1701 to the bottom and is fixedly connected to the bidirectional oil cylinder 18 .

[0034] Specifically, first guide rods 1702 are fixedly mounted on the upper end surfaces of both sides of the bidirectional oil cylinder 18 , and the first guide rods 1702 are slidably connected to the connecting arms 1701 .

[0035] Specifically, core connecting arms 19 are respectively installed at the output ends of both sides of the bidirectional oil cylinder 18 , and the lower ends of the core connecting arms 19 are slidably connected to the second guide rod 20 , and the second guide rod 20 is fixedly connected to the lower end surface of the bidirectional oil cylinder 18 .

[0036] Specifically, the lower end surface of the core connecting arm 19 is fixedly connected with a grabbing plate 1901 through bolts for grabbing the sand core 2 .

[0037] In this embodiment, after the sand core 2 is placed on the core supporting platform 6, the sand core 2 is covered above the inflatable tape 3. At this time, the external air source is started to fill the inflatable tape 3 with a certain amount of compressed air through the air pipe 5 and the inflation nozzle 4. At this time, the inflatable tape 3 expands under the action of the compressed air, so that the expanded surface of the inflatable tape 3 is in close contact with the inner surface of the sand core 2 to press the sand core 2, thereby fixing the sand core 2.

[0038] In this embodiment, the reduction motor 7 rotates during dipping, driving the rotating shaft 8 to rotate. Since the inflatable tape 3 is in a compressed state at this time, the sand core 2 can be fixed together with the core support platform 6, so that the rotation of the rotating shaft 8 will drive the core support platform 6 and the sand core 2 to rotate 180° (such as Figure 5), at this time, the four lifting cylinders 11 fixed under the dipping tank 12 drive the dipping tank 12 to rise, and the sand core 2 is completely immersed in the dipping paint 9, and the dipping paint 9 is dipped onto the surface of the sand core 2, thereby completing the dipping process. At this time, the reducer rotates slowly in the reverse direction by 180°. During the rotation process, the excess paint will flow into the dipping tank 12 for recovery, avoiding paint dripping due to excessive paint and forming painting defects. Then the lifting cylinder 17 moves downward, driving the sand core grabbing assembly 1 to grab the sand core 2 and move it to the next station for subsequent process processing.

[0039] Specifically, lifting cylinders 11 are respectively installed at the four corners of the lower end surface of the dipping tank 12.

[0040] Specifically, the bottom of the inflatable tape 3 is provided with an inflating nozzle 4, and the inflating nozzle 4 is fixedly connected to an air pipe 5 extending from the inside of the core supporting platform 6, and the other end of the air pipe 5 is connected to an external air source.

[0041] In this embodiment, during the use of the dipping paint 9 in the dipping tank 12, paint precipitation may occur. At this time, a certain amount of paint is transported from the paint stirring tank 15 to the bottom of the dipping tank 12 through the paint pump 14. Since the paint pump 14 has a certain pressure, the dipping paint 9 input into the dipping tank 12 will cause the bottom dipping paint 9 to flow, thereby causing the precipitate to flow, thereby solving the problem of paint precipitation while replenishing the paint in the dipping tank 12.

[0042] A stirrer 16 is arranged above the paint stirring tank 15 to stir the inside, so as to avoid the paint from settling, thereby ensuring the concentration of the paint.

[0043] Specifically, the bottom end of the dipping tank 12 is connected to a paint pump 14 pipeline through a paint hose 13, and the paint pump 14 is connected to a paint stirring tank 15 pipeline through a hose.

[0044] Specifically, the upper end surface of the paint stirring tank 15 is fixedly connected with a stirrer 16 .

[0045] When the present invention is in use, a sand core grabbing assembly 1 is arranged above the core supporting platform 6, and a lifting cylinder 17 is arranged on the fixed connecting arm 1701, and the lower end of the lifting cylinder 17 is connected to the two-way oil cylinder 18. Because the output ends on both sides of the two-way oil cylinder 18 are respectively connected to the core connecting arms 19, when the lifting cylinder 17 drives the two-way oil cylinder 18 to stably lift and lower through the first guide rod 1702, the core connecting arms 19 also rise and fall with the two-way oil cylinder 18, and at the same time, the lower end of the two-way oil cylinder 18 is fixed. Two second guide rods 20 are connected, and the lower end of the core connecting arm 19 is slidably connected to the second guide rods 20. When the two-way oil cylinder 18 is driven to operate, the core connecting arm 19 will be driven to move synchronously in both directions, thereby ensuring that the core connecting arm 19 moves symmetrically with the center of the sand core 2. When the lifting cylinder 17 drives the grabbing plate 1901 at the lower end of the core connecting arm 19 to move to the lower surface of the sand core 2, when the lower surface is flush with the grabbing plate 1901, the two-way oil cylinder 18 retracts the core connecting arm 19 to the position of the sand core 2, thereby The sand core grabbing assembly 1 completes grabbing of the sand core 2, and then drives the lifting cylinder 17 to move downward, and places the sand core 2 on the inflatable tape 3 on the core supporting platform 6. At this time, the two-way oil cylinder 18 is driven to extend, driving the core receiving arm 19 to open, thereby releasing the grabbing of the sand core 2, and driving the lifting cylinder 17 to move upward to complete the loading of the sand core 2. When the sand core 2 is placed on the core supporting platform 6, the sand core 2 is covered on the inflatable tape 3, and the external air source is started to inflate the sand core 2 through the air pipe 5 and the inflatable nozzle 4. A certain amount of compressed air is filled into the air tape 3. At this time, the air tape 3 expands under the action of the compressed air, so that the expanded surface of the air tape 3 is in close contact with the inner surface of the sand core 2 to press the sand core 2, thereby fixing the sand core 2. During the dip coating, the reduction motor 7 rotates to drive the rotating shaft 8 to rotate. Since the air tape 3 is in a compressed state at this time, the sand core 2 can be fixed together with the core support platform 6, so that the rotation of the rotating shaft 8 will drive the core support platform 6 and the sand core 2 to rotate 180° together (such as Figure 5 ), at this time, the four lifting cylinders 11 fixed under the dipping tank 12 drive the dipping tank 12 to rise, and the sand core 2 is completely immersed in the dipping paint 9, and the dipping paint 9 is dipped onto the surface of the sand core 2, thereby completing the dipping process. At this time, the reducer rotates slowly in the reverse direction by 180°. During the rotation process, the excess paint will flow into the dipping tank 12 for recovery, avoiding paint dripping due to excessive paint and forming painting defects. Then the lifting cylinder 17 moves downward, driving the sand core grabbing assembly 1 to grab the sand core 2, and it can be moved to the next station for subsequent process processing.

[0046] The remaining parts of the present invention that are not described may be the same as the prior art, or are well-known technologies, or may be implemented by using the prior art, and will not be described in detail here.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand core brushing device, characterized in that: include: A support (10), wherein the support (10) is fixed on one side of the dipping tank (12), and the top end of the support (10) is fixedly connected to a reduction motor (7) for fixing the reduction motor (7) and supplying power at the same time. The output end of the reduction motor (7) is rotatably connected to a rotating shaft (8), and the rotating shaft (8) crosses the upper space of the dipping tank (12) to reach the other side of the dipping tank (12) and is rotatably connected to a bracket of the rotating shaft (8). A core support platform (6) is fixedly connected to the rotating shaft (8) for supporting the sand core (2) to flip and contact with the dipping coating (9), and an inflatable tape (3) is fixedly arranged on the upper end surface of the core support platform (6); A sand core grabbing assembly (1) is fixedly connected to the top of the core supporting platform (6) via a connecting arm (1701).

2. A sand core coating device according to claim 1, characterized in that: The sand core grabbing assembly (1) comprises a lifting cylinder (17), wherein the lifting cylinder (17) is fixed to the upper end surface of the connecting arm (1701), and the output end of the lifting cylinder (17) passes through the connecting arm (1701) to the bottom and is fixedly connected to the bidirectional oil cylinder (18).

3. A sand core coating device according to claim 2, characterized in that: First guide rods (1702) are fixedly mounted on the upper end surfaces of both sides of the bidirectional oil cylinder (18), and the first guide rods (1702) are slidably connected to the connecting arm (1701).

4. A sand core coating device according to claim 2, characterized in that: The output ends of both sides of the bidirectional oil cylinder (18) are respectively provided with core connecting arms (19), the lower ends of the core connecting arms (19) are slidably connected to the second guide rod (20), and the second guide rod (20) is fixedly connected to the lower end surface of the bidirectional oil cylinder (18).

5. A sand core coating device according to claim 4, characterized in that: The lower end surface of the core connecting arm (19) is fixedly connected to a grabbing plate (1901) via bolts and is used to grab the sand core (2).

6. A sand core coating device according to claim 1, characterized in that: Lifting cylinders (11) are respectively installed at the four corners of the lower end surface of the dipping tank (12).

7. A sand core coating device according to claim 1, characterized in that: The bottom of the inflatable tape (3) is provided with an inflating nozzle (4), and the inflating nozzle (4) is fixedly connected to an air pipe (5) extending from the inside of the core supporting platform (6), and the other end of the air pipe (5) is connected to an external air source.

8. A sand core coating device according to claim 1, characterized in that: The bottom end of the dipping tank (12) is connected to a paint pump (14) pipeline via a paint hose (13), and the paint pump (14) is connected to a paint stirring tank (15) pipeline via a hose.

9. A sand core coating device according to claim 8, characterized in that: The upper end surface of the paint stirring tank (15) is fixedly connected with a stirrer (16).

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