A sanding device for cylindrical head disc suspension porcelain insulators

Abstract

The present invention discloses a sanding device for cylindrical head disc suspension porcelain insulators, belonging to the technical field of porcelain insulator processing. It includes a workbench with a number of workstations. Each workstation is provided with a blank tooling that can rotate around its body, and there is a through hole in the center of the blank tooling. The workbench has at least one automatic gluing workstation and at least one automatic sanding workstation. The present invention provides a sanding device for cylindrical head disc suspension porcelain insulators. The blank is horizontally placed with the opening of the inner hole of the blank facing downwards. The sponge roller extends from bottom to top, and the blank rotates in a circle, so that the sand-adhering glaze glue adhered to the sponge roller can be evenly applied to the inner wall of the inner hole of the blank. Then, the glazed sand is sprayed upwards through the sandblasting pipe. Since there is no sand-adhering glaze glue adhered to the end of the inner hole of the blank, after firing, the porcelain sand is only sintered to the side wall of the inner hole, ensuring the uniformity of the electric field distribution at the head of the cylindrical head disc suspension porcelain insulator.

Description

Technical Field

[0001] The present invention relates to the technical field of porcelain insulator processing, and more specifically, to a sanding device for cylindrical head disc suspension porcelain insulators. Background Art

[0002] The advantages of cylindrical head suspension porcelain insulators are that compared with conical head products of the same grade, the head size of the porcelain part is smaller, and the iron cap assembled with it is also smaller. Therefore, the raw material consumption is relatively less than that of conical head products, and the cost is relatively low. In addition, it is convenient to realize automated production. The disadvantage is that the cylindrical head design requires the porcelain part to be not only glazed but also sanded during the manufacturing of the head to ensure good tensile mechanical properties, so that it has a higher coefficient of friction. Therefore, one more process is added compared with conical head products in the manufacturing process. Mechanical and electrical properties are the key assessment indicators of disc suspension porcelain insulators. The quality of the sanding on the head of the porcelain part of the cylindrical head suspension porcelain insulator directly determines the quality of the mechanical and electrical breakdown performance of the product, and at the same time, it will also affect the distribution of the electric field stress on the head of the porcelain part and thus affect the electrical performance of the product. Therefore, solving the problems existing in the sanding process has become the key and key control item affecting the quality of the product.

[0003] In the prior art, for cylindrical head disc suspension porcelain insulators, generally, manual sanding is used, that is, the blank is placed horizontally with the opening of the inner hole of the blank facing upward, and a sponge roller adhered with sanding glaze glue rotates along the inner hole wall surface of the blank for one circle, so that a layer of sanding glaze glue is applied on the wall surface of the blank. Then, a layer of coated glaze sand is poured or sprayed into the inner hole of the blank, and the glaze sand fills the inner hole of the blank, and the coated glaze sand adheres to the sanding glaze glue. Using the above manual operation, not only the production efficiency is low, but also the situation of uneven application of sanding glaze glue is likely to occur, affecting the uniformity of the electric field distribution on the head of the porcelain part. And under the action of gravity, the sanding glaze glue accumulates at the end of the inner hole of the blank, and after firing, the porcelain sand will sinter to the end of the inner hole of the porcelain part and the inner hole side wall.

[0004] In order to improve production efficiency and at the same time improve the defects in the traditional process, the present invention provides a sanding device for cylindrical head disc suspension porcelain insulators, which places the blank horizontally with the opening of the inner hole of the blank facing downward, and the sponge roller extends from bottom to top. The blank rotates in a circle, so that the sanding glaze glue adhered to the sponge roller can be evenly applied on the inner wall of the inner hole of the blank. Then, coated glaze sand is sprayed upward through a sandblasting pipe. Since there is no sanding glaze glue adhered to the end of the inner hole of the blank, after firing, the porcelain sand only sinters to the inner hole side wall, ensuring the uniformity of the electric field distribution on the head of the cylindrical head disc suspension porcelain insulator. Summary of the Invention

[0005] The technical solution adopted by the present invention is: to provide a sanding device for cylindrical head disc-shaped suspension porcelain insulators, which includes a workbench. There are several workstations on the workbench. Each workstation is provided with a blank tooling that can rotate around the body, and there is a through hole in the center of the blank tooling. At least one automatic glue application workstation and at least one automatic sanding workstation are left on the workbench. The automatic glue application workstation includes a sponge roller, a first lifting platform, a propulsion cylinder, and a connecting rod. The propulsion cylinder is installed on the first lifting platform. One end of the connecting rod is hinged to the output end of the propulsion cylinder, and the other end of the connecting rod is hinged to the bottom end of the sponge roller. The middle part of the connecting rod is hinged to the lifting platform. The first lifting platform drives the sponge roller, the propulsion cylinder, and the connecting rod to move up and down as a whole.

[0006] After adopting the above structure, the first lifting platform in the automatic glue application workstation drives the sponge roller to move upward until the sponge roller reaches the designated position. Then, the propulsion cylinder drives the sponge roller to close to the wall surface of the inner hole of the blank through the transmission of the connecting rod. The blank rotates around the body driven by the blank tooling, and relative rotation occurs between the blank and the sponge roller, so that the inner hole of the blank is evenly adhered with glue on one side. Since the sponge roller is parallel to the wall surface of the inner hole of the blank, the force is evenly distributed when the sponge roller is pressed, the glue overflows evenly in the sponge roller, and the blank rotates around the body during the glue application process. The centrifugal force generated by the rotation of the adhered glue offsets part of the gravity, avoiding the uneven situation caused by the downward flow of the glue. In the automatic glue application workstation, the opening of the inner hole of the blank faces downward, and the glue will not adhere to the end of the inner hole of the blank, which does not affect the uniformity of the electric field distribution at the head of the porcelain part.

[0007] Preferably, the automatic glue application workstation further includes a glue supply roller filled with glue and a supply roller transmission device. The supply roller transmission device drives the glue supply roller to rotate. The propulsion cylinder drives the sponge roller to fit with the glue supply roller. The glue supply roller includes two main parts: a roller and a housing. The roller is placed inside the housing, and the gap between the housing and the roller is filled with glue. After the roller absorbs or adheres to the glue, through the pressing and driving with the sponge roller, the surface of the sponge roller is evenly adhered with glue.

[0008] Preferably, a glue receiving tray is further installed on the first lifting platform, and the glue receiving tray is located below the sponge roller for receiving the glue missed by the sponge roller. The setting of the glue receiving tray avoids unnecessary waste of glue.

[0009] Preferably, a glue tank is further included, and the glue tank is used to store the glue collected by the glue receiving tray.

[0010] Preferably, the automatic sand feeding station includes a sand blowing pipe, a sand storage tank, a second lifting platform, and a compressed air pipe. The sand storage tank is connected to the bottom end of the sand blowing pipe through a hose. The output end of the compressed air pipe is connected to the bottom end of the water outlet pipe, and a valve is provided at the electrical connection. The second lifting platform drives the sand blowing pipe to move up and down. The compressed air pipe is externally connected to a compressed air pump, which blows the sand from the sand storage tank upward through the sand blowing pipe, so that the sand adheres to the part of the inner hole of the workpiece where glue is adhered.

[0011] Preferably, a sand receiving tray is further installed on the second lifting platform, and the sand receiving tray is located below the sand blasting pipe for receiving the sand scattered from the sand blasting pipe.

[0012] Preferably, an operating table driving device is installed at the bottom of the station operating table, and the operating table driving device drives the station operating table to rotate around its body to switch stations.

[0013] Preferably, the workpiece fixture includes a workpiece tray, a sand receiving hopper, and a hollow rotatable platform. The hollow rotatable platform is installed on the station operating table, and the sand receiving hopper and the workpiece tray are installed on the hollow rotatable platform in sequence from top to bottom.

[0014] The present invention has the following advantages compared with the prior art:

[0015] 1. The present invention has an automatic gluing station and an automatic sand feeding station. After the automatic gluing station completes automatic gluing, the automatic sand feeding station undertakes this process, spraying and coating glaze sand in the inner hole of the workpiece, and the glaze sand adheres to the part coated with sand-adhering glaze glue. By setting the above two stations, automatic gluing and sand feeding operations are completed, improving labor efficiency and saving labor costs.

[0016] 2. In the present invention, the workpiece is placed on a workpiece fixture that can rotate around its body. In the automatic gluing station and the automatic sand feeding station, the workpiece rotates around its body on the workpiece fixture. The sand-adhering glaze glue and the glaze sand adhered to the inner hole of the workpiece offset part of the gravity under the action of centrifugal force, so that the sand-adhering glaze glue and the glaze sand are evenly distributed on the vertical plane. The rotation of the workpiece around its body ensures that the inner hole of the workpiece contacts the sand-adhering glaze glue and the glaze sand evenly on the horizontal plane. Through the above settings, the uniformity of the electric field distribution at the head of the porcelain part is ensured.

[0017] 3. In the present invention, the opening of the inner hole of the workpiece placed on the workpiece fixture faces downward, and the end of the inner hole of the workpiece is located above. The glue adhered to the inner hole wall surface of the workpiece will not overflow to the end of the inner hole of the workpiece. In the subsequent automatic sand feeding station, the binding force between the end of the inner hole of the workpiece and the glaze sand is not strong, and the glaze sand automatically detaches. After firing, the porcelain sand is only sintered to the side wall of the inner hole of the porcelain part, ensuring the uniformity of the electric field distribution at the head of the cylindrical head disc-shaped suspension porcelain insulator.

[0018] 4. In the present invention, the propulsion cylinder drives the sponge roller to be close to the wall surface of the inner hole of the blank through the transmission of the connecting rod. The blank rotates around its body under the drive of the blank tooling, and relative rotation occurs between the blank and the sponge roller. Since the edge of the sponge roller is parallel to the wall surface of the inner hole of the blank, the force between the sponge roller and the wall surface of the inner hole of the blank is evenly distributed in the vertical plane, making the glue on the inner hole wall surface evenly distributed; and the blank rotates around its body, and the force between each part of the wall surface of the inner hole of the blank and the sponge roller is evenly distributed, and excess glue overflows from the wall surface of the sponge roller. In manual operation, the blank is fixed, and the sponge roller needs to be manually rolled. During the manual rolling process, it cannot be guaranteed that the force pressing the sponge roller against the wall surface of the inner hole of the blank remains constant. Compared with manual operation, the adhesive sand glaze glue and the wrapped glaze sand applied in the present invention are more evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of the present invention;

[0020] Figure 2 is a side view of the present invention;

[0021] Figure 3 is Figure 2 a partial enlarged view of part A in

[0022] Figure 4 is a connection schematic diagram of the supply roller transmission device in the present invention;

[0023] Figure 5 is a connection schematic diagram of the propulsion cylinder in the present invention;

[0024] Figure 6 is a working schematic diagram of the supply roller transmission device in the present invention;

[0025] Figure 7 is a working schematic diagram of the sponge roller in the present invention;

[0026] Figures 8-9 is a working schematic diagram of the sand blowing pipe in the present invention.

[0027] Description of the reference numerals in the drawings:

[0028] Wherein 1, station operation table; 2, blank tooling; 21, blank tray; 22, sand receiving hopper; 23, hollow rotatable platform; 3, sand blowing pipe; 4, sponge roller; 5, sand storage tank; 6, first lifting platform; 7, compressed air pipe; 8, second lifting platform; 9, sand receiving tray; 10, operation table drive device; 11, propulsion cylinder; 12, glue receiving tray; 13, glue tank; 14, connecting rod; 15, glue supply roller; 16, supply roller transmission device; 17, blank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. 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.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] Embodiment 1

[0032] As Figure 1 shown, in this embodiment, four workstations are evenly arranged on the workstation operation table 1, and a blank tooling 2 is placed on each workstation. Starting from the 12 o'clock direction in the figure and rotating clockwise, the four workstations are an automatic gluing workstation, an automatic sanding workstation, a blank 17 output workstation, and a blank 17 input workstation in sequence. In the automatic gluing workstation and the automatic sanding workstation, the blank tooling 2 drives the blank 17 to rotate clockwise around the body.

[0033] As Figure 2 shown, for the convenience of understanding, the positions of the automatic gluing workstation and the automatic sanding workstation in the figure are adjusted, and the specific positions of the automatic gluing workstation and the automatic sanding workstation are subject to Figure 1 this. Figure 2 In this, an operation table driving device 10 is installed on the base part of the workstation operation table 1 for driving the workstation operation table 1 to rotate around the body, facilitating the switching between different workstations. The automatic gluing workstation in the workstation operation table 1 includes a vertically placed sponge roller 4, a first lifting platform 6 installed outside the workstation operation table 1, a propulsion cylinder 11, and a connecting rod 14. The sponge roller 4 is located directly below the blank tooling 2 in the automatic gluing workstation, and the propulsion cylinder 11 is installed on the moving end of the first lifting platform 6.

[0034] The automatic sanding station in the station operation table 1 includes a sand blowing pipe 3, a sand storage tank 5, a second lifting platform 8, and a compressed air pipe 7. The sand storage tank 5 is installed outside the station operation table 1. The sand blowing pipe 3 is installed on the moving end of the second lifting platform 8. The sand storage tank 5 is connected to the bottom of the sand blowing pipe 3 through a hose. The bottom of the sand blowing pipe 3 adopts a tee structure and is also connected to the compressed air pipe 7. The air blown out by the compressed air pipe 7 vertically blows up the glazed sand from the sand storage tank 5 and discharges it through the upper end outlet of the sand blowing pipe 3. In some examples, a manual adjustment valve is provided on the hose connected to the sand storage tank 5; in some examples, a solenoid valve is provided on the compressed air pipe 7. In some examples, a sand receiving tray 9 is provided on the second lifting platform 8, and the sand receiving tray 9 is located below the sand blasting pipe for receiving the sand spilled from the sand blasting pipe.

[0035] As Figure 3 shown, the blank tooling 2 includes a blank tray 21, a sand receiving hopper 22, and a hollow rotatable platform 23. The hollow rotatable platform 23 is installed on the station operation table 1. The blank tray 21 is installed on the hollow rotatable platform 23. The sand receiving hopper 22 is installed above the blank tray 21. Since there is a through hole in the center of the blank tooling 2, the blank tray 21, the sand receiving hopper 22, and the hollow rotatable platform 23 are combined to form this through hole for the sponge roller 4 or the sand blowing pipe 3 to enter and exit.

[0036] As Figure 4 shown, the automatic gluing station further includes a glue supply roller 15 filled with glue and a supply roller transmission device 16. The supply roller transmission device 16 drives the glue supply roller 15 to rotate around its body. One end of a connecting rod 14 is connected to the output end of the propulsion cylinder 11, and the other end of the connecting rod 14 is connected to the bottom of the sponge roller 4. The middle of the connecting rod 14 is hinged to the surface of the first lifting platform 6. When the propulsion cylinder 11 works, the output shaft of the propulsion cylinder 11 extends, and the connecting rod 14 drives the sponge roller 4 to shift outward, making the sponge roller 4 close to the edge of the glue supply roller 15. The glue supply roller 15 drives the sponge roller 4 to rotate, so that a layer of sand-adhering glaze glue is evenly adhered to its surface.

[0037] As Figure 5 described, a glue receiving tray 12 is installed on the first lifting platform 6, and the glue receiving tray 12 is located directly below the sponge roller 4 for receiving the glue missed by the sponge roller 4. An overflow port is provided on the glue receiving tray 12, and a glue tank 13 is placed outside the glue receiving tray 12. The glue tank 13 is used to store the glue flowing out from the overflow port.

[0038] As Figure 6As described above, the supply roller drive device 16 is driven by a motor, and then drives the rotating shaft of the glue supply roller 15 to rotate circumferentially through belt drive. The glue supply roller 15 includes two main parts: a roller and a housing. The roller is placed inside the housing, and the gap between the housing and the roller is filled with glue. After the roller absorbs or adheres to the glue, the surface of the sponge roller 4 is evenly adhered with glue by pressing against and driving the sponge roller 4. In some examples, the glue receiving tray 12 can receive the glue missed by the glue supply roller 15.

[0039] As Figure 7 described above, the sponge roller 4 in the initial position is located directly below the workpiece 17. The mobile end of the first lifting platform 6 moves upward, driving the sponge roller 4 through the through hole in the middle of the workpiece fixture 2 to reach the designated area. Then the propulsion cylinder 11 works, driving the sponge roller 4 to close to the inner wall of the inner hole of the workpiece 17 through the connecting rod 14. Since the workpiece 17 is driven by the workpiece fixture 2, that is, the hollow rotatable platform 23 drives the workpiece tray 21 to rotate circumferentially, the workpiece tray 21 drives the workpiece 17 to rotate circumferentially, and the workpiece 17 and the sponge roller 4 rotate relatively, and the glue adhered to the surface of the sponge roller 4 is evenly applied to the inner hole wall surface of the workpiece 17.

[0040] As Figure 8 and Figure 9 shown, when the sand blowing pipe 3 performs a blowing operation inside the inner hole of the workpiece 17, the workpiece 17 rotates circumferentially at a constant speed, and the sand blowing pipe 3 moves up and down to ensure that the wrapped glaze sand at the blowing position of the sand blowing pipe 3 can evenly cover the area adhered with the sand adhering glaze glue.

[0041] The processing sequence of this embodiment is as follows:

[0042] I. Place the workpiece 17 on the workpiece fixture 2 at the input station of the workpiece 17;

[0043] II. The operating table drive device 10 drives the operating table 1 of the station to rotate, switching the workpiece 17 to the automatic gluing station;

[0044] III. The hollow rotatable platform 23 works, driving the workpiece tray 21 to rotate at a constant speed. At the same time, the first lifting platform 6 drives the sponge roller 4 to rise to the designated height;

[0045] IV. The propulsion cylinder 11 drives the sponge roller 4 to fit against the inner hole wall surface of the workpiece 17 through the connecting rod 14 to perform a gluing operation on this wall surface;

[0046] V. When gluing for a certain period of time, the sponge roller 4 retracts to the axis drive, and the first lifting platform 6 drives the sponge roller 4 to move downward to the initial position;

[0047] VI. The operating table drive device 10 drives the operating table 1 of the station to rotate, switching the workpiece 17 to the automatic sanding station;

[0048] 7. The second lifting platform 8 drives the sand blowing pipe 3 to rise to the designated position, the three-way connection at the bottom of the sand blowing pipe 3 is connected, and the upper end of the sand blowing pipe 3 blows the glazed sand.

[0049] 8. The second lifting platform 8 drives the sand blowing pipe 3 to move downward at a constant speed for a certain distance. During the movement, the sand blowing pipe 3 keeps blowing operation, and after exceeding this distance, the sand blowing pipe 3 stops working.

[0050] 9. After the gluing and sanding are completed, the operating table driving device 10 drives the working table 1 to rotate, so that the blank 17 is switched to the blank 17 output station for subsequent processing.

[0051] Embodiment 2

[0052] The difference between this embodiment and Embodiment 1 is that in step 8 of the processing sequence in this embodiment, the second lifting platform 8 drives the sand blowing pipe 3 to move up and down reciprocally inside the inner hole of the blank 17. During the movement, the sand blowing pipe 3 keeps blowing operation, and the number of reciprocations is three times. After three blowing operations, the sand blowing pipe 3 stops working and moves out.

[0053] The above describes the preferred embodiments of the present invention, but it should not be construed as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A sanding device for a cylindrical head disc-shaped suspension porcelain insulator, characterized in that: It includes a workbench for workstations. There are several workstations on the workbench for workstations. A blank workpiece tooling that can rotate all around is provided on each workstation, and there is a through hole in the center of the blank workpiece tooling. At least one automatic glue application workstation and at least one automatic sanding workstation are left on the workbench for workstations. The automatic glue application workstation includes a sponge roller, a first lifting platform, a propulsion cylinder, and a connecting rod. The propulsion cylinder is installed on the first lifting platform. One end of the connecting rod is hinged to the output end of the propulsion cylinder, the other end of the connecting rod is hinged to the bottom end of the sponge roller, and the middle part of the connecting rod is hinged to the lifting platform. The first lifting platform drives the sponge roller, the propulsion cylinder, and the connecting rod to move up and down as a whole; The automatic glue application workstation further includes a glue supply roller filled with glue and a supply roller transmission device. The supply roller transmission device drives the glue supply roller to rotate, and the propulsion cylinder drives the sponge roller to fit with the glue supply roller; A glue receiving tray is further installed on the first lifting platform, and the glue receiving tray is located below the sponge roller and is used to receive the glue missed by the sponge roller; It further includes a glue tank for storing the glue collected by the glue receiving tray; The automatic sanding workstation includes a sand blowing pipe, a sand storage tank, a second lifting platform, and a compressed air pipe. The sand storage tank is connected to the bottom end of the sand blowing pipe through a hose. The output end of the compressed air pipe is connected to the bottom end of the water outlet pipe, and a valve is provided at the connection. The second lifting platform drives the sand blowing pipe to move up and down; A workbench driving device is installed at the bottom of the workbench for workstations. The workbench driving device drives the workbench for workstations to rotate all around for switching workstations; The blank workpiece tooling includes a blank workpiece tray, a sand receiving hopper, and a hollow rotatable platform. The hollow rotatable platform is installed on the workbench for workstations, and the sand receiving hopper and the blank workpiece tray are installed on the hollow rotatable platform in sequence from top to bottom.

2. The sanding device for a cylindrical head disc suspension porcelain insulator according to claim 1, characterized in that: A sand receiving tray is further installed on the second lifting platform, and the sand receiving tray is located below the sand blowing pipe and is used to receive the sand scattered by the sand blowing pipe.

Images