Tool jig for welding sheet getter

Abstract

The tool jig comprises a detector fixing plate, a getter pressing plate and a welding mechanism, a detector tube shell mounting groove matched with the getter pressing plate is formed in the upper end of the detector fixing plate, the getter pressing plate is arranged above the detector tube shell mounting groove and can move up and down, and the welding mechanism is arranged above the getter pressing plate. The lower end of the getter pressing plate is provided with a strip-shaped pressing block corresponding to the welding position of the thin getter, and the lower end face of the strip-shaped pressing block is provided with a plurality of first vacuum suction holes which are linearly arranged and used for adsorbing the thin getter. The two ends, located on the strip-shaped pressing block, of the getter pressing plate are each provided with a welding receding groove corresponding to the welding positions of the two ends of the thin getter, and the welding mechanism comprises a welding head matched with the welding receding grooves. The sheet getter welding fixture is simple in structure and low in manufacturing cost, and effectively fixes and limits the sheet getter by arranging the strip-shaped pressing block, so that deformation conditions such as deflection and upwarp cannot occur during welding, and the welding yield is ensured.

Description

Technical Field

[0001] The utility model relates to the field of infrared detector production, in particular to a tooling fixture for welding a thin getter. Background Art

[0002] During the production of an infrared detector, a getter needs to be welded in a ceramic package to ensure a vacuum environment inside the ceramic package. The normal welding method is to use laser welding to weld the getter. During the R & D and testing process, laser welding has high requirements for equipment and cannot quickly complete R & D verification, so manual welding is required. Since the getter is a thin sheet with a thickness of 0.5 mm and is prone to deformation, it is very difficult to operate during manual welding because it is easy to cause one end to be welded while the other end cannot be welded or have a false weld, and it is also easy to be skewed, resulting in poor appearance. Content of the Utility Model

[0003] In order to solve the problem of easy deformation during the welding of a thin getter in the prior art, the utility model provides a tooling fixture for welding a thin getter.

[0004] The utility model provides a tooling fixture for welding a thin getter, which includes a detector fixing plate, a getter pressing plate and a welding mechanism. The upper end of the detector fixing plate is provided with a detector package installation groove adapted to the getter pressing plate. The getter pressing plate is arranged above the detector package installation groove and can move up and down. The lower end of the getter pressing plate is provided with a strip-shaped pressing block corresponding to the welding position of the thin getter. The lower end surface of the strip-shaped pressing block is provided with a plurality of first vacuum suction holes arranged in a line for adsorbing the thin getter. The two ends of the getter pressing plate located at the strip-shaped pressing block are respectively provided with a welding avoidance groove corresponding to the welding positions at both ends of the thin getter. The welding mechanism includes a welding head adapted to the welding avoidance groove.

[0005] As a further improvement of the utility model, two parallel strip-shaped holes are arranged at the bottom of the detector package installation groove.

[0006] As a further improvement of the utility model, a hand-held groove is arranged on each side of the detector package installation groove.

[0007] As a further improvement of the present utility model, the welding head includes a pressing clamp block, a first electric pen, a second electric pen and an electrode conductive fixing seat. The first electric pen and the second electric pen are fixedly arranged side by side through the pressing clamp block. A first electrode rod and a second electrode rod are respectively arranged at the lower ends of the first electric pen and the second electric pen. First mounting holes and second mounting holes respectively adapted to the first electrode rod and the second electrode rod are arranged at both ends of the electrode conductive fixing seat. A hollow conductive column communicating with the first mounting hole and extending downward is further arranged at one end of the electrode conductive fixing seat. The first electrode rod is a telescopic electrode rod and an insulating sleeve is arranged between the first electrode rod and the first mounting hole. The second electrode rod is in interference fit with the second mounting hole. A conductive block for contacting the welding position of the detector housing is arranged on the side surface of the lower end of the hollow conductive column. The lower end of the first electrode rod is used for contacting the welding position of the thin-film getter.

[0008] As a further improvement of the present utility model, a first air extraction hole communicating with the first vacuum suction hole is arranged at the upper end of the getter pressing plate.

[0009] As a further improvement of the present utility model, a plurality of bolt mounting holes are arranged on the periphery of the detector fixing plate.

[0010] As a further improvement of the present utility model, a second vacuum suction hole is further arranged at the bottom of the detector housing mounting groove, and a second air extraction hole communicating with the second vacuum suction hole is arranged on one side of the detector fixing plate.

[0011] As a further improvement of the present utility model, the welding mechanism further includes a movable bracket for driving the pressing clamp block to move at multiple angles.

[0012] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and the manufacturing cost is low. By arranging the strip-shaped pressing block, the thin-film getter is effectively fixed and limited, so that the situation of deformation such as skew and warping will not occur during welding, ensuring the welding yield. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of a tooling fixture for welding a thin-film getter of the present utility model;

[0014] Figure 2 is an exploded structural diagram of a tooling fixture for welding a thin-film getter of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the getter pressing plate of a tooling fixture for welding a thin-film getter of the present utility model;

[0016] Figure 4It is an exploded structural schematic diagram of a welding mechanism of a tooling fixture for thin-film getter welding in the present utility model;

[0017] Figure 5 It is a structural schematic diagram of the welding of an infrared detector housing and a thin-film getter by a tooling fixture for thin-film getter welding in the present utility model.

[0018] Reference numerals: 1 - detector fixing plate; 2 - getter pressing plate; 3 - welding mechanism; 4 - infrared detector housing; 5 - thin-film getter; 11 - detector housing mounting groove; 12 - strip hole; 13 - hand-holding groove; 14 - second vacuum suction hole; 21 - strip pressing block; 22 - first vacuum suction hole; 23 - welding avoidance groove; 31 - pressing clamp block; 32 - first electric pen; 33 - second electric pen; 34 - first electrode rod; 35 - second electrode rod; 36 - electrode conductive fixing seat; 37 - hollow conductive column; 38 - insulating sleeve; 39 - conductive block. Detailed implementation manners

[0019] In the description of the present utility model, it should be understood that if there are descriptions related to directions, such as the directions or positional relationships indicated by up, down, front, back, left, right, etc., the direction descriptions can be based on the directions or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, so it cannot be understood as a limitation to the present utility model.

[0020] In the description of the present utility model, if there are descriptions of quantities, the meaning of several is one or more, the meaning of multiple is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there are descriptions of first and second, they are only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0021] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the technical field can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0022] Such as Figures 1 to 5As shown in the figure, the utility model discloses a tooling fixture for welding a thin-film getter 5, which includes a detector fixing plate 1, a getter pressing plate 2 and a welding mechanism 3. An installation groove 11 for a detector housing adapted to the getter pressing plate 2 is provided at the upper end of the detector fixing plate 1. The detector housing installation groove 11 is used to install an infrared detector housing 4. A limiting frame structure adapted to the outer wall of the infrared detector housing is provided on the outer periphery of the lower end of the getter pressing plate 2. The getter pressing plate 2 is arranged above the detector housing installation groove 11 and can move up and down. A strip-shaped pressing block 21 corresponding to the welding position of the thin-film getter 5 is provided at the lower end of the getter pressing plate 2. A plurality of first vacuum suction holes 22 arranged in a line for adsorbing the thin-film getter 5 are provided on the lower end surface of the strip-shaped pressing block 21. Welding avoidance grooves 23 corresponding to the welding positions at both ends of the thin-film getter 5 are respectively provided at both ends of the getter pressing plate 2 where the strip-shaped pressing block 21 is located. The welding mechanism 3 includes a welding head adapted to the welding avoidance groove 23.

[0023] During use, first place the infrared detector housing 4 in the detector housing installation groove 11 of the detector fixing plate 1, then adsorb the thin-film getter 5 and the strip-shaped pressing block 21 of the getter pressing plate 2 into one body through the vacuum suction holes, and then move the getter pressing plate 2 downward until the two ends of the thin-film getter 5 are attached to the welding positions on the infrared detector housing 4. At this time, the limiting frame structure of the getter pressing plate 2 is adapted to the outer wall of the infrared detector housing 4 to achieve the function of limiting and fixing. Then the welding head can move downward to weld the two ends of the thin-film getter 5 through the welding avoidance groove 23.

[0024] The structure of the utility model is simple and the manufacturing cost is low. By setting the strip-shaped pressing block 21, the thin-film getter 5 is effectively fixed and limited, so that it will not be skewed, warped or deformed during welding, ensuring the welding yield.

[0025] In the utility model, two parallel strip-shaped holes 12 are provided at the bottom of the detector housing installation groove 11, and two rows of pins of the infrared detector housing 4 can be placed in the two strip-shaped holes 12 to ensure the effective limiting and fixing of the infrared detector housing 4.

[0026] In the utility model, a hand-held groove 13 is respectively provided on both sides of the detector housing installation groove 11 to facilitate the taking and placing of the infrared detector housing 4.

[0027] In the present utility model, the welding head includes a pressing clamp block 31, a first electric pen 32, a second electric pen 33 and an electrode conductive fixing seat 36. The first electric pen 32 and the second electric pen 33 are fixedly arranged side by side through the pressing clamp block 31. A first electrode rod 34 and a second electrode rod 35 are respectively arranged at the lower ends of the first electric pen 32 and the second electric pen 33. First mounting holes and second mounting holes respectively adapted to the first electrode rod 34 and the second electrode rod 35 are arranged at both ends of the electrode conductive fixing seat 36. A hollow conductive column 37 communicating with the first mounting hole and extending downward is further arranged at one end of the electrode conductive fixing seat 36. The first electrode rod 34 is an elastic and telescopic electrode rod, and an insulating sleeve 38 is arranged between the first electrode rod 34 and the first mounting hole to ensure insulation between the first electrode rod 34 and the hollow conductive column 37. The second electrode rod 35 is in interference fit with the second mounting hole, so that the second electrode rod 35 is electrically connected with the electrode conductive fixing seat 36. A conductive block 39 for contacting the welding position of the detector housing is arranged on the side surface of the lower end of the hollow conductive column 37. The lower end of the first electrode rod 34 is used for contacting the welding position of the thin-film getter 5. During welding, the pressing clamp block 31 drives the first electric pen 32 and the second electric pen 33 to move downward synchronously until the first electrode rod 34 contacts the thin-film getter 5. Since the first motor rod is a telescopic structure, when the first electrode rod 34 contacts the thin-film getter 5, the pressing clamp block 31 continues to move downward. At this time, the first electrode rod 34 contracts, and the conductive block 39 outside the hollow conductive column 37 of the click conductive fixing seat fits with the welding position on the infrared detector housing 4, so as to form a closed-loop circuit, and further complete the welding of both ends of the thin-film getter 5 and the welding position of the infrared detector housing 4. After welding is completed, since the first electrode rod 34 is elastic and telescopic, after welding is completed, when the hand is released, due to the elastic force of the first electrode rod 34, the pressing clamp block 31 is lifted, realizing the separation of the welding head after welding from the welding position, and facilitating the welding of the next position.

[0028] In the present utility model, a first air extraction hole communicating with the first vacuum suction hole 22 is arranged at the upper end of the getter pressing plate 2. A second vacuum suction hole 14 is further arranged at the bottom of the detector housing installation groove 11. A second air extraction hole communicating with the second vacuum suction hole 14 is arranged on one side of the detector fixing plate 1. The first air extraction hole and the second air extraction hole are respectively connected with a vacuum pump through a connecting pipe.

[0029] In the present utility model, a plurality of bolt mounting holes are arranged around the detector fixing plate 1, facilitating the effective fixing of the detector fixing plate 1.

[0030] In the present utility model, the welding mechanism 3 further includes a movable bracket for driving the pressing clamp block 31 to move at multiple angles, facilitating the operator to control the multi-angle movement of the pressing clamp block 31.

[0031] The utility model adsorbs and fixes the thin-film getter 5 by arranging the strip-shaped pressing block 21, and at the same time, a special welding head is used for rapid and stable welding, which can reduce the difficulty of welding the thin-film getter 5, ensure the requirements such as the flat position of welding the thin-film getter 5, and will not generate situations such as false welding, and can also realize rapid batch welding.

[0032] The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the utility model.

Claims

1. A tooling fixture for welding thin-sheet getter, characterized in that: It includes a detector fixing plate, a getter pressing plate and a welding mechanism, the upper end of the detector fixing plate is provided with a detector tube shell mounting groove adapted to the getter pressing plate, the getter pressing plate is arranged above the detector tube shell mounting groove and can move up and down, the lower end of the getter pressing plate is provided with a strip pressing block corresponding to the welding position of the thin sheet getter, the lower end surface of the strip pressing block is provided with a plurality of first vacuum suction holes arranged in a line for adsorbing the thin sheet getter, the getter pressing plate is located at both ends of the strip pressing block and is respectively provided with a welding avoidance groove corresponding to the welding position of the two ends of the thin sheet getter, and the welding mechanism includes a welding head adapted to the welding avoidance groove.

2. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: The bottom of the detector tube shell installation groove is provided with two parallel strip holes.

3. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: A hand buckle groove is respectively provided on both sides of the detector tube shell installation groove.

4. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: The welding head includes a pressing clamp, a first electric pen, a second electric pen and an electrode conductive fixing seat, the first electric pen and the second electric pen are fixed together in parallel by the pressing clamp, the lower end of the first electric pen and the lower end of the second electric pen are respectively provided with a first electrode rod and a second electrode rod, the two ends of the electrode conductive fixing seat are respectively provided with a first mounting hole and a second mounting hole respectively adapted to the first electrode rod and the second electrode rod, one end of the electrode conductive fixing seat is also provided with a hollow conductive column connected to the first mounting hole and extending downward, the first electrode rod is a retractable electrode rod and an insulating sleeve is provided between the first mounting hole, the second electrode rod and the second mounting hole are interference fit, the lower end side of the hollow conductive column is provided with a conductive block for contacting the welding position of the detector tube shell, and the lower end of the first electrode rod is used to contact the welding position of the thin film getter.

5. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: The upper end of the getter pressing plate is provided with a first suction hole connected with the first vacuum suction hole.

6. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: A plurality of bolt mounting holes are arranged on the periphery of the detector fixing plate.

7. The tooling fixture for thin-sheet getter welding according to claim 1, characterized in that: A second vacuum suction hole is also provided at the bottom of the detector tube shell installation groove, and a second air extraction hole connected with the second vacuum suction hole is provided on one side of the detector fixing plate.

8. The tooling fixture for thin-sheet getter welding according to claim 4, characterized in that: The welding mechanism also includes a movable bracket for driving the pressing clamp to move at multiple angles.

Images