Silk-screen printing device for inner wall of ceramic shell

Abstract

The ceramic shell inner wall silk-screen printing device comprises a bottom plate, a transmission assembly and a silk-screen printing assembly, the transmission assembly is installed on the bottom plate and is in transmission connection with the silk-screen printing assembly, the silk-screen printing assembly comprises an inner pipe with a notch, a left end and a right end are welded to the two ends of the inner pipe, and a clamping plate is welded to the notch of the inner pipe; scrapers are mounted on the clamping plates; the bearing sleeves are installed on the left end and the right end, the bearings are arranged in the bearing sleeves, the outer portions of the bearing sleeves and the pressing rings are fixed through bolts, and the silk screen is installed between the bearing sleeves and the pressing rings. The device is simple in structure and convenient to operate, the inner wall of the ceramic shell makes contact with a silk screen, the transmission assembly enables the silk-screen printing assembly to roll, the ceramic shell is driven to roll together, the inner wall of the ceramic shell is evenly coated with coating through extrusion of the scraper and the silk screen, and waste of the coating is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum interrupters, and particularly relates to a silk screen printing device for the inner wall of a ceramic shell. Background Art

[0002] With the diversification of the types of vacuum interrupters, the performance requirements for vacuum interrupters are getting higher and higher, the shape is getting smaller and smaller, and the withstand voltage level is getting higher and higher. This brings great difficulties to the production of vacuum interrupters. Simply optimizing the structure of the vacuum interrupter can no longer meet the requirements. Improving the withstand voltage of the ceramic shell can solve the problem of body breakdown of the ceramic shell, but the problem of surface flashover of the vacuum interrupter still exists. In order to solve the problem of surface flashover, a coating is applied inside the ceramic shell, which can effectively solve the problem of surface flashover. This coating is applied to the inner wall of the ceramic shell. At present, the methods for inner wall coating include spraying, plasma spraying, and manual coating, etc. The paint has a high viscosity, so the spraying method is not suitable; the plasma spraying has the best effect, but the equipment price is high and the use cost is high, and the manual coating has uneven coating.

[0003] The prior art CN206401373U discloses a conductive film coating device for the inner wall of an alkaline battery shell, which realizes smooth and complete coating of the inner wall of the battery shell by designing a roller that can move up and down and rotate, but this coating method is prone to waste of paint and uneven coating. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a silk screen printing device for the inner wall of a ceramic shell, which has a simple structure, adopts the silk screen printing method, can achieve uniform coating, is easy to operate, and saves production costs.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: A silk screen printing device for the inner wall of a ceramic shell includes a bottom plate, a transmission component, and a silk screen printing component. The transmission component is installed on the bottom plate and is in transmission connection with the silk screen printing component. The silk screen printing component includes an inner tube with a notch. The left end head and the right end head are welded to both ends of the inner tube. A clamping plate is welded at the notch of the inner tube, and a squeegee is installed on the clamping plate. Bearing sleeves are installed on the left end head and the right end head. Bearings are arranged inside the bearing sleeves, and the outside is fixed to a pressure ring by bolts. The silk screen is installed between the bearing sleeve and the pressure ring.

[0006] A rack is fixedly connected to the bottom plate, and a gear is sleeved on the outer wall of the pressure ring. The gear and the rack are in meshing transmission.

[0007] A bearing plate is provided on the bottom plate, and an adjusting bolt is arranged between the bottom plate and the bearing plate.

[0008] A sliding sleeve is sleeved on the left end head, a tensioning screw is arranged between the sliding sleeve and the left end head, and a bearing sleeve is sleeved outside the sliding sleeve.

[0009] On one side of the bottom plate, a support frame is installed. The transmission assembly includes a cylinder and a connecting rod. The cylinder is fixed on the support frame, and its piston rod is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the right end head.

[0010] A feed hole is opened in the right end head, and a sealing screw is arranged at the feed end of the feed hole.

[0011] The scraper is made of polyurethane material.

[0012] The beneficial effects of the present invention: Compared with the prior art, the present invention has a simple structure and convenient operation. By contacting the inner wall of the ceramic shell with the wire mesh, the transmission assembly makes the screen printing assembly roll, drives the ceramic shell to roll together, and uses the extrusion of the scraper and the wire mesh to realize uniform coating of the paint on the inner wall of the ceramic shell, avoiding waste of the paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings: Figure 1 is a front cross-sectional view of the present invention; Figure 2 is a side view of the present invention; Figure 3 is a schematic structural diagram of the screen printing assembly of the present invention; In the figure: 1, bottom plate; 2, inner tube; 3, left end head; 4, right end head; 5, clamping plate; 6, scraper; 7, bearing sleeve; 8, bearing; 9, pressure ring; 10, wire mesh; 11, gear; 12, bearing plate; 13, adjusting bolt; 14, sliding sleeve; 15, tensioning screw; 16, support frame; 17, cylinder; 18, connecting rod; 19, feed hole; 20, rack; 21, sealing screw; 22, ceramic shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 of the embodiments.

[0015] The technical solutions of the present invention will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be repeated in some embodiments. Embodiment

[0016] As Figures 1 to 3As shown in the figure, the present invention provides a silk screen printing device for the inner wall of a ceramic shell, which includes a bottom plate 1, a transmission component, and a silk screen printing component. The transmission component is installed on the bottom plate 1 and is in transmission connection with the silk screen printing component. The silk screen printing component includes an inner tube 2 with a notch. The left end head 3 and the right end head 4 are welded at both ends of the inner tube 2. A clamping plate 5 is welded at the notch of the inner tube 2, and a squeegee 6 is installed on the clamping plate 5. Bearing sleeves 7 are installed on the left end head 3 and the right end head 4. Bearings 8 are arranged inside the bearing sleeves 7, and the outside is fixed to the pressure ring 9 by bolts. The silk screen 10 is installed between the bearing sleeve 7 and the pressure ring 9. When in use, first place the ceramic shell 22 on the bottom plate 1. The silk screen 10 is in contact with the inner wall of the ceramic shell 22. The transmission component is used to drive the silk screen printing component to roll, driving the ceramic shell 22 to roll together. The squeegee 6 presses against the silk screen 10, and the coating is evenly coated on the inner wall of the ceramic shell. Using this device effectively improves the coating efficiency and avoids waste of the coating.

[0017] Further, a rack 20 is fixedly connected to the bottom plate 1. A gear 11 is sleeved on the outer wall of the pressure ring 9. The gear 11 and the rack 20 are in meshing transmission. By adopting the meshing transmission mode of the gear 11 and the rack 20, the stability of the transmission is effectively ensured, the transmission precision is improved, and the uniform coating of the coating is guaranteed.

[0018] Further, in order to ensure effective contact between the inner wall of the ceramic shell and the silk screen 10, a bearing plate 12 is provided on the bottom plate 1, and an adjusting bolt 13 is arranged between the bottom plate 1 and the bearing plate 12. When in use, place the ceramic shell 22 on the bearing plate 12, and by turning the adjusting bolt 13, adjust the distance between the bearing plate 12 and the bottom plate 1 so that the inner wall of the ceramic shell 22 and the silk screen 10 are effectively attached.

[0019] Further, a sliding sleeve 14 is sleeved on the left end head 3. A tensioning screw 15 is arranged between the sliding sleeve 14 and the left end head 3, and the bearing sleeve 7 is sleeved outside the sliding sleeve 14. By adjusting the tensioning screw 15, change the axial distance between the sliding sleeve 14 and the left end head 3, thereby adjusting the axial tension of the silk screen 10, which is beneficial to the smooth coating of the coating.

[0020] Further, a support frame 16 is installed on one side of the bottom plate 1. The transmission component includes a cylinder 17 and a connecting rod 18. The cylinder 17 is fixed on the support frame 16, and its piston rod is hinged to one end of the connecting rod 18. The other end of the connecting rod 18 is hinged to the right end head 4. Using the cylinder 17 as the driving part, drive the silk screen printing component to perform a linear reciprocating motion to ensure the uniformity of the coating.

[0021] Further, a feed hole 19 is opened on the right end head 4. A sealing screw 20 is arranged at the feed end of the feed hole 19. The coating enters the inner tube 2 through the feed hole 19, and the sealing screw 21 is used to prevent dust from entering the feed hole 19.

[0022] Further, the squeegee 6 is made of polyurethane material. The polyurethane material has high wear resistance and elasticity, a long service life, and is not easily damaged to the wire mesh 10.

[0023] Working principle: When in use, first lift one end of the left end head 3, place the ceramic shell 22 on the bearing plate 12, turn the adjusting bolt 13 to adjust the position of the bearing plate 12 so that the inner wall of the ceramic shell 22 is just in contact with the wire mesh 10, then open the sealing screw 20 and inject the coating material from the feed hole 19 into the inner tube 2. Start the cylinder 17 to drive the screen printing assembly and the ceramic shell 22 to perform linear reciprocating rolling. During the rolling process, the squeegee 6 squeezes the wire mesh 10, so as to evenly coat the inner wall of the ceramic shell 22 with the coating material.

[0024] In addition to the above preferred embodiments, the present invention has other implementation manners. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope claimed by the present invention.

Claims

1. A silk screen printing device for the inner wall of a ceramic shell, characterized in that, It includes a bottom plate (1), a transmission assembly, and a screen printing assembly. The transmission assembly is installed on the bottom plate (1) and is in transmission connection with the screen printing assembly. The screen printing assembly includes an inner tube (2) with a notch. The left end head (3) and the right end head (4) are welded to both ends of the inner tube (2). A clamping plate (5) is welded at the notch of the inner tube (2), and a squeegee (6) is installed on the clamping plate (5). Bearing sleeves (7) are installed on the left end head (3) and the right end head (4). Bearings (8) are arranged inside the bearing sleeves (7), and the outside is fixed to a compression ring (9) by bolts. A screen (10) is installed between the bearing sleeves (7) and the compression ring (9).

2. The silk screen printing device for the inner wall of a ceramic shell according to claim 1, wherein, A rack (20) is fixedly connected to the bottom plate (1), and a gear (11) is sleeved on the outer wall of the compression ring (9). The gear (11) and the rack (20) are in meshing transmission.

3. A silk screen printing device for the inner wall of a ceramic shell according to claim 1, characterized in that, A bearing plate (12) is provided on the bottom plate (1), and adjusting bolts (13) are arranged between the bottom plate (1) and the bearing plate (12).

4. A silk screen printing device for the inner wall of a ceramic shell according to claim 1, characterized in that, A sliding sleeve (14) is sleeved on the left end head (3), a tensioning screw (15) is arranged between the sliding sleeve (14) and the left end head (3), and a bearing sleeve (7) is sleeved outside the sliding sleeve (14).

5. A silk screen printing device for the inner wall of a ceramic shell according to claim 1, characterized in that, A support frame (16) is installed on one side of the bottom plate (1). The transmission assembly includes a cylinder (17) and a connecting rod (18). The cylinder (17) is fixed on the support frame (16), and its piston rod is hinged to one end of the connecting rod (18). The other end of the connecting rod (18) is hinged to the right end head (4).

6. The silk screen printing device for the inner wall of a ceramic shell according to claim 1, characterized in that, A feed hole (19) is opened on the right end head (4), and a sealing screw (21) is arranged at the feed end of the feed hole (19).

7. A silk screen printing device for the inner wall of a ceramic shell according to claim 1, characterized in that, The squeegee (6) is made of polyurethane material.

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