Observation window welding device

Abstract

The invention discloses an observation window welding device, and particularly relates to the field of welding devices.The observation window welding device comprises a welding cavity, the welding cavity is a hollow cylinder and communicates with a vacuum pump and a protective gas tank, the side face of the welding cavity is connected with a sealed input structure, and the sealed input structure comprises a sealed input cylinder which is connected to the side face of the welding cavity and extends into the welding cavity; the two ends of the sealed input cylinder are open, the sealed input cylinder is internally and rotatably connected with a sealed input disc, the side face of the sealed input disc is provided with an input groove, the side face of the sealed input cylinder is provided with an extraction opening communicated with a vacuum pump, and the welding cavity is internally and rotatably connected with an annular welding frame which is connected with a plurality of clamping and conveying structures in an annular array. The sealing input structure and the sealing output structure are connected to the side face of the welding cavity, observation windows to be welded and welded are input or discharged under the sealing condition, argon is filled in the observation windows for protection, the consumption of argon can be reduced, the clamping and conveying structure is connected to the welding frame, and welding is conducted in the rotating process of the welding frame.

Description

Technical Field

[0001] The invention relates to the field of welding devices, in particular to an observation window welding device. Background Art

[0002] Observation windows are used for observation and light source transmission in closed equipment or vacuum containers. The structures are divided into detachable and non-detachable ones. The non-detachable ones are often welded, which has the advantage of better sealing effect, including brazing and argon arc welding. The brazing method is to fix the optical lens and the flange by brazing, which has better sealing. However, due to the high price of brazing materials and brazing equipment, the cost is relatively high. Argon arc welding uses two flanges with a sealing structure to clamp the lens in the middle and weld the two flanges. It also has high sealing performance and strength, and the cost is relatively low.

[0003] However, when welding a small observation window, the number of observation windows is large, the welding work is delicate and cumbersome, the manual welding efficiency is low, and a large amount of argon gas is consumed in argon arc welding. Summary of the invention

[0004] The purpose of the present invention is to provide an observation window welding device, which can automatically feed and weld with the aid of automatic feeding equipment, and adopts a sealed input structure and a sealed output structure, so as to complete welding in a closed welding chamber and reduce the consumption of argon gas, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An observation window welding device includes a welding chamber, which is a hollow cylindrical shape. The welding chamber is connected to a vacuum pump and a protective gas tank. The side of the welding chamber is connected to a sealed input structure. The sealed input structure includes a sealed input cylinder connected to the side of the welding chamber and extending into the interior of the welding chamber. The sealed input cylinder has openings at both ends. The sealed input cylinder is rotatably connected to a sealed input disk. An input groove is arranged on the side of the sealed input disk. An exhaust port connected to the vacuum pump is arranged on the side of the sealed input cylinder. An annular welding frame is rotatably connected to the welding chamber. A plurality of clamping structures in an annular array are connected to the welding frame. The welding chamber is connected to a welding head.

[0006] Preferably, the side of the welding cavity is connected to a sealing output structure, and the sealing output structure is the same as the sealing input structure.

[0007] Preferably, the top and bottom of the sealing input disc are fixedly connected to sealing rings, the center of the sealing input disc is fixedly connected to a rotating shaft, the rotating shaft passes through the top of the sealing input cylinder and extends to the top of the welding cavity, and the rotating shaft is drivingly connected to the welding frame.

[0008] Preferably, the welding chamber is coaxially rotatably connected to a main shaft that passes through the welding chamber, one end of the main shaft located in the welding chamber is fixedly connected to the welding frame, and one end of the main shaft located at the top of the welding chamber is fixedly connected to a transmission gear ring, which is transmitted to a driven gear ring fixed on the top of the rotating shaft.

[0009] Preferably, the clamping and conveying structure includes a base plate rotatably connected to the welding frame, a clamping frame vertically slidably connected to the welding frame, a clamping plate located above the base plate rotatably connected to the clamping frame, a push rod is provided in the input groove, and an ejection rod is provided in the welding cavity.

[0010] Preferably, the bottom of the base plate is fixedly connected to a pin shaft, the pin shaft passes through the welding frame and is rotatably connected to the welding frame, the pin shaft is coaxially fixedly connected to the welding gear, and the welding gear is meshed with an arc-shaped toothed plate arranged in the welding cavity.

[0011] Preferably, the arc-shaped toothed plate is connected to a sliding frame, the sliding frame is connected to a vertical telescopic cylinder, the top of the vertical telescopic cylinder is connected to a transverse telescopic cylinder, and the transverse telescopic cylinder is connected to a welding head.

[0012] Preferably, the vertical telescopic cylinder is divided into two sides by a partition, and the bottom end of the vertical telescopic cylinder is rotatably connected to an angle adjustment shaft, a rotating sealing plate is fixedly connected to the angle adjustment shaft, and a fixed sealing plate is arranged under the partition. The angle adjustment shaft is plugged into and radially fixed with the vertical piston rod, and the vertical piston is connected to the vertical piston rod.

[0013] Preferably, the sliding frame includes a sliding rod passing through the arc-shaped tooth plate, the sliding rod is connected to the arc-shaped tooth plate by a spring, the bottom end of the sliding rod is fixedly connected to a resistance rod, and the resistance rod resists the telescopic blocking rod connected to the bottom of the welding frame.

[0014] Preferably, a cooling structure is provided in the welding chamber, and the cooling structure comprises a cooling water pipe connected to the arc-shaped tooth plate, and a cleaning plate is connected to one side of the cooling water pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The side of the welding chamber is connected with a sealed input structure and a sealed output structure, so that the observation windows to be welded and the completed welding can be input or discharged under sealed conditions. The interior is filled with argon gas for protection, which can reduce the consumption of argon gas. The clamping structure connected to the welding frame is adopted, and welding is carried out during the rotation of the welding frame, which has high automated welding efficiency; 2. The rotating shaft in the sealed input structure is connected to the main shaft to control the input and output rates of the sealed input structure and the sealed output structure. The bottom plate in the clamping structure is connected to the welding gear. The arc-shaped tooth plate is used to drive the welding gear to rotate, so that the workpiece input rate, welding rate and output rate are proportional. The rotation rate of the welding frame can be adjusted according to welding requirements; 3. The welding head is connected to the arc-shaped tooth plate through a sliding frame. The abutment rod connected to the sliding frame is in intermittent contact with the arc-shaped tooth plate, so that the welding head rotates synchronously with the welding frame, so that the position of the welding head and the workpiece remain relatively stable during the rotation of the workpiece; 4. The vertical movement of the vertical piston rod in the vertical telescopic cylinder is controlled by the pressure between the partition and the vertical piston, and the radial rotation angle of the vertical piston rod is controlled by the pressure between the rotating sealing plate and the fixed sealing plate. In conjunction with the horizontal telescopic cylinder, the position and welding angle of the welding head can be controlled; the cooling water pipe and the cleaning plate are connected to the arc-shaped tooth plate to cool the workpiece in time after welding and clean up the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the welding chamber of the present invention; Figure 3 It is a schematic diagram of the structure inside the welding chamber of the present invention; Figure 4 It is a structural schematic diagram of the welding frame and the arc-shaped tooth plate of the present invention; Figure 5 It is a structural schematic diagram of the arc-shaped tooth plate of the present invention; Figure 6 is a cross-sectional view of a first sliding frame of the present invention; Figure 7 is a cross-sectional view of a second sliding frame of the present invention; In the figure: 1, welding chamber; 2, sealed input structure; 21, push cylinder; 211, connecting pipe; 212, first connecting pipe; 213, second connecting pipe; 22, sealed input cylinder; 221, air extraction port; 23, sealed input disk; 24, sealed input groove; 25, push rod; 26, pressure baffle; 27, driven gear; 3, sealed output structure; 31, driving motor; 32, driving gear; 4, transmission gear ring; 5, main shaft; 6, welding frame; 7, clamping structure; 71, bottom plate; 72, clamping plate; 73, Lifting cylinder; 74, welding gear; 75, telescopic stop rod; 8, arc-shaped tooth plate; 81, sliding frame; 811, vertical telescopic cylinder; 8111, angle adjustment shaft; 8112, rotating sealing plate; 8113, partition; 8114, vertical piston rod; 812, horizontal telescopic cylinder; 813, resistance rod; 814, wire feeding tube; 815, sliding plate; 82, cooling pipe rack; 821, cooling water pipe; 822, cleaning plate; 83, spring; 84, arc-shaped tooth surface; 85, slide groove; 9, ejection rod; 91, ejection plate. DETAILED DESCRIPTION

[0017] Example 1

[0018] like Figure 1-7As shown, an observation window welding device includes a welding chamber 1, which is connected to an argon storage tank through a valve, and the welding chamber 1 is connected to a vacuum pump through a valve. The side of the welding chamber 1 is connected to a sealing input structure 2, and the sealing input structure 2 includes a sealing input cylinder 22, which is rotatably connected to a sealing input disk 23 in the sealing input cylinder 22, and the sealing input disk 23 is connected to a rotating shaft, the middle of the rotating shaft is hollow, and a pressurizing baffle 26 is inserted in the hollow part, and the bottom end of the pressurizing baffle 26 is fixed on a pushing cylinder 21, and the side of the pressurizing baffle 26 is in contact with the inner wall of the rotating shaft and is sealed, and a push rod 25 connected to the pressurized side of the pressurizing baffle 26 is inserted in the sealing input disk 23, and the push plate connected to the push rod 25 is located in the sealing input groove 24 on the sealing input disk 23, and the sealing output structure 3 is the same as the sealing input structure 2, except that the sealing output disk and the rotating shaft connected thereto are solid, and the pushing rod 9 is arranged inside the welding chamber 1 opposite to the sealing output groove.

[0019] When welding the observation window, the observation window to be welded is placed in the sealed input groove 24, and the driving motor 31 coaxially fixedly connected to the rotating shaft of the sealed output disk is driven to rotate the sealed output disk, and the sealed output disk is coaxially fixedly connected to the driving gear 32 through the rotating shaft. The driving gear 32 rotates to drive the transmission gear ring 4 to rotate, and the driven gear 27 meshing with the transmission gear ring 4 rotates to rotate the sealed input disk 23, so that the observation window to be welded in the sealed input groove 24 is sent into the welding chamber 1. During the sending process, when the sealed output groove is opposite to the exhaust port 221, the vacuum pump extracts the external air to avoid the introduction of air into the welding chamber 1. The gas affects the welding quality. The principle is the same in the sealed output structure 3. When the workpiece to be welded enters the welding chamber 1 along with the sealed input disk 23, one side of the pressurized baffle 26 connected to the push cylinder 21 is pressurized to extend the push rod 25. The push plate connected to the push rod 25 pushes the workpiece to the welding frame 6. The workpiece is clamped by the clamping structure 7 on the welding frame 6. The welding frame 6 connected to the transmission gear ring 4 through the main shaft 5 that passes through the top of the welding chamber 1 rotates. The workpiece is welded when it passes through the welding head. After welding is completed, when the workpiece passes between the push rod 9 and the sealed output structure 3, the push plate 91 connected to the push rod 9 extends to push the workpiece out.

[0020] The other side of the pressurized baffle 26 is in a negative pressure state. After the ejection rod 9 in the sealed input disk 23 is extended, as the sealed input disk 23 rotates, its connecting point is connected with the negative pressure end, so that the push rod 25 can be retracted into the sealed input disk 23. The ejection rod 9 is connected to the ejection cylinder, and the ejection cylinder is fixed at the top of the welding chamber 1.

[0021] Example 2

[0022] like Figure 1-7As shown, an observation window welding device, based on Example 1, is designed with a clamping structure 7, including a base plate 71 rotatably connected to the welding frame 6, the base plate 71 is coaxially fixedly connected to the welding gear 74 through a pin shaft penetrating the welding frame 6, the bottom end of the welding gear 74 is fixedly connected with a telescopic cylinder connected to the pushing cylinder 21 through a second connecting pipe 213, a connecting pipe 211, and a valve, the telescopic blocking rod 75 slides in the telescopic cylinder, a clamping plate 72 rotatably connected to the lifting cylinder 73 is arranged above the base plate 71, an arcuate tooth plate 8 is fixedly connected in the welding chamber 1, an arcuate tooth surface 84 is arranged on the inner side of the arcuate tooth plate 8, and the arcuate tooth surface 84 is intermittently meshed with the welding gear 74.

[0023] During the rotation of the welding frame 6, when the clamping structure 7 moves to be opposite to the sealing input structure 2, the lower clamping plate 72 moves down under the drive of the lifting cylinder 73, and the clamping plate 72 cooperates with the bottom plate 71 to clamp the workpiece. It is necessary to pay attention to the pushing distance of the pushing rod 25 so that the observation window to be welded and the bottom plate 71 are kept coaxial as much as possible. The clamping structure 7 on the welding frame 6 carries the observation window and moves to before the welding gear 74 is meshed with the arc-shaped tooth surface 84, the telescopic blocking rod 75 is extended, and the telescopic blocking rod 75 conflicts with the contact rod 813. At the same time, the welding gear 74 is meshed with one end of the arc-shaped tooth surface 84. Driven by the welding frame 6, the welding head aligns the wire feeding tube 814 with the welding point, and the sliding frame 81 fixedly connected to the contact rod 813 slides, so that the welding head moves with the clamping structure 7 Move while moving. During the movement, the bottom plate 71 rotates, causing the workpiece to rotate, and circular welding is performed on the circular observation window. After welding is completed, the welding gear 74 disengages from the arc-shaped tooth surface 84, and the telescopic blocking rod 75 retracts at the same time. The abutting rod 813 and the welding frame 6 connected thereto are reset under the tension of the spring 83, until the observation window after welding is rotated with the welding frame 6 to the front relative to the sealing output structure 3. The clamping plate 72 moves up driven by the lifting cylinder 73, and the observation window after welding can be discharged. The lifting cylinder 73 is connected to the pushing cylinder 21 through the first connecting pipe 212, the connecting pipe 211, and the valve. The first connecting pipe 212 and the second connecting pipe 213 are respectively rotatably connected to the connecting pipe 211 and connected to the connecting pipe 211.

[0024] The arc-shaped tooth plate 8 is provided with a slide groove 85, in which a sliding plate 815 is slidably connected, a resisting rod 813 is fixed at the bottom of the sliding plate 815, a sliding frame 81 is fixed at the upper part of the sliding plate 815, the sliding plate 815 is connected with a spring 83 in the slide groove 85, the sliding frame 81 comprises a vertical telescopic cylinder 811, the vertical telescopic cylinder 811 is divided into two parts by a partition 8113, a part below the partition 8113 is rotatably connected with an angle adjustment shaft 8111, a rotating sealing sheet 8112 is fixed on the angle adjustment shaft 8111, and a The fixed sealing plate matched with the sealing plate can control the rotation of the vertical piston rod 8114 by controlling the air pressure between the rotating sealing plate 8112 and the fixed sealing plate, so that the horizontal telescopic cylinder 812 rotates, so that the welding wire in the wire feeding tube 814 contacts the welding point at a certain angle. A vertical piston rod 8114 is arranged above the partition 8113, which penetrates the partition 8113 and is sleeved on the outside of the angle adjustment shaft 8111. The height of the welding wire can be changed by changing the pressure between the vertical piston and the partition 8113, which is applicable to observation windows of different models.

[0025] Example 3

[0026] like Figure 1-7 As shown, an observation window welding device is shown, based on Example 2, the arc-shaped tooth plate 8 is extended, and a cooling pipe rack 82 is set at the extended part of the arc-shaped tooth plate 8, and a cooling water pipe 821 and a cleaning plate 822 are connected to the cooling pipe rack 82.

[0027] After the welding is completed, the workpiece rotates to be opposite to the cooling pipe rack 82 during welding, and the telescopic blocking rod 75 is extended to make it conflict with the interference rod 813 at the bottom of the cooling pipe rack 82, and the welding gear 74 is meshed with the extended arc-shaped tooth surface 84. During the rotation of the workpiece, the cooling water pipe 821, which can be adjusted horizontally and vertically, sprays water to cool the welding position, and the cleaning plate 822 sprays water and the welding rack 6 is scraped and cleaned, which can not only cool the workpiece quickly, but also cool the inside of the welding chamber 1. It should be noted that the cooling water needs to be discharged, and the bottom of the welding chamber 1 is set to a truncated cone shape so that the cooling water is concentrated at the inner edge of the welding chamber 1. A drain outlet is opened at the edge, and the drain outlet is closed by a buoyancy ball. When the water volume is small, the float ball closes the drain outlet. When the water volume is large, the float ball floats up under the buoyancy of the water to discharge the water. The welding chamber 1 is also connected to an air drying device to purify the water vapor in the welding chamber 1.

Claims

1. An observation window welding device, characterized in that: The invention comprises a welding chamber (1), which is a hollow cylindrical shape. The welding chamber (1) is connected to a vacuum pump and a protective gas tank. The side of the welding chamber (1) is connected to a sealed input structure (2). The sealed input structure (2) comprises a sealed input cylinder (22) connected to the side of the welding chamber (1) and extending into the interior of the welding chamber (1). The sealed input cylinder (22) has openings at both ends. A sealed input disk (23) is rotatably connected inside the sealed input cylinder (22). An input groove is arranged on the side of the sealed input disk (23). An exhaust port (221) connected to the vacuum pump is arranged on the side of the sealed input cylinder (22). An annular welding frame (6) is rotatably connected inside the welding chamber (1). A plurality of clamping structures (7) in an annular array are connected to the welding frame (6). A welding head is connected inside the welding chamber (1). The side of the welding chamber (1) is connected to a sealed output structure (3). The sealed output structure (3) is the same as the sealed input structure (2).

2. The observation window welding device according to claim 1, characterized in that: The top and bottom of the sealing input disc (23) are fixedly connected to sealing rings, and the center of the sealing input disc (23) is fixedly connected to a rotating shaft, which passes through the top of the sealing input cylinder (22) and extends to the top of the welding chamber (1), and the rotating shaft is drivingly connected to the welding frame (6).

3. The observation window welding device according to claim 2, characterized in that: The welding chamber (1) is coaxially rotatably connected to a main shaft (5) that passes through the welding chamber (1); one end of the main shaft (5) located in the welding chamber (1) is fixedly connected to a welding frame (6); one end of the main shaft (5) located at the top of the welding chamber (1) is fixedly connected to a transmission gear ring (4); and the transmission gear ring (4) is driven by a driven gear ring fixed at the top of the rotating shaft.

4. The observation window welding device according to claim 1, characterized in that: The clamping and conveying structure (7) comprises a bottom plate (71) rotatably connected to the welding frame (6), a clamping frame vertically slidably connected to the welding frame (6), a clamping plate (72) located above the bottom plate (71) rotatably connected to the clamping frame, a pushing rod (25) is arranged in the input groove, and an ejecting rod (9) is arranged in the welding cavity (1).

5. The observation window welding device according to claim 4, characterized in that: The bottom of the base plate (71) is fixedly connected to a pin shaft, the pin shaft penetrates the welding frame (6) and is rotatably connected to the welding frame (6), the pin shaft is coaxially fixedly connected to a welding gear (74), and the welding gear (74) is meshed with an arc-shaped toothed plate (8) arranged in the welding chamber (1).

6. The observation window welding device according to claim 5, characterized in that: The arc-shaped toothed plate (8) is connected to a sliding frame (81), the sliding frame (81) is connected to a vertical telescopic cylinder (811), the top of the vertical telescopic cylinder (811) is connected to a transverse telescopic cylinder (812), and the transverse telescopic cylinder (812) is connected to a welding head.

7. The observation window welding device according to claim 6, characterized in that: The vertical telescopic cylinder (811) is divided into two sides by a partition (8113); the bottom end of the vertical telescopic cylinder (811) is rotatably connected to an angle adjustment shaft (8111); a rotating sealing sheet (8112) is fixedly connected to the angle adjustment shaft (8111); a fixed sealing sheet is arranged below the partition (8113); the angle adjustment shaft (8111) is plugged into and radially fixed to a vertical piston rod (8114); and a vertical piston is connected to the vertical piston rod (8114).

8. The observation window welding device according to claim 6, characterized in that: The sliding frame (81) comprises a sliding rod penetrating the arc-shaped toothed plate (8), the sliding rod being connected to the arc-shaped toothed plate (8) via a spring (83), the bottom end of the sliding rod being fixedly connected to a resisting rod (813), and the resisting rod (813) resisting against a telescopic blocking rod (75) connected to the bottom of the welding frame (6).

9. The observation window welding device according to claim 5, characterized in that: A cooling structure is provided in the welding chamber (1), the cooling structure comprising a cooling water pipe (821) connected to the arc-shaped tooth plate (8), and a cleaning plate (822) is connected to one side of the cooling water pipe (821).

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