CN111805080A

CN111805080A - Take gravity-removing positioning banding anchor clamps of L type mounting bracket contactor

Info

Publication number: CN111805080A
Application number: CN201910293601.9A
Authority: CN
Inventors: 饶永; 马兴; 吴建荣; 曾乾嵘
Original assignee: Guizhou Zhenhua Qunying Electric Appliance Co ltd State Owned No 891 Factory
Current assignee: Guizhou Zhenhua Qunying Electric Appliance Co ltd State Owned No 891 Factory
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-10-23
Anticipated expiration: 2039-04-12
Also published as: CN111805080B

Abstract

The invention provides a gravity-removing positioning method and a positioning clamp for a contactor with an L-shaped mounting frame. The bottom surface of the contactor to be edge sealed with the L-shaped mounting frame is positioned in a hanging mode, the welding surface of the housing matched with the base is directly positioned, and the precision of the laser focal length in the welding process is improved; the influence of welding deformation of the mounting frame and the contactor housing on the positioning precision is eliminated, and the precision positioning is ensured; the deviation range of the positioning accuracy is 0.01-0.04 mm, and the positioning accuracy is improved by more than 10 times.

Description

Take gravity-removing positioning banding anchor clamps of L type mounting bracket contactor

Technical Field

The invention relates to an edge sealing clamp, in particular to a de-gravity positioning method and a positioning clamp for a contactor with an L-shaped mounting frame.

Background

Along with the rapid development of military science and technology in China, the requirement on the overall sealing quality grade of military sealed electronic component products is higher and higher, and the precision of laser operation is directly determined by the positioning precision of a sealing device, so that the higher requirement is provided for the precision positioning of laser sealing of components. In particular, some special mounting arrangements of the sealing device, such as contactors with L-shaped mounts, are shown in fig. 1, and the L-shaped mounts are configured as shown in fig. 2.

At present, the mounting mode of a contactor mounting frame is mainly realized through a laser welding technology, and the specific method is that the mounting frame and a contactor are combined and then positioned through a positioning clamp, and then laser beams are used as energy sources to impact on contact points (namely welding points) of the mounting frame and a contactor cover shell, so that the purpose of welding is realized. The mounting frame and the contactor housing are usually formed in a resistance welding mode in the processing and manufacturing process, the mounting frame and the contactor housing receive the heat and force of resistance welding in the resistance welding process, and the mounting frame and the contactor housing are seriously deformed in the resistance welding process. If the deformation size and direction of the mounting frame of each device are infinitely enlarged under a microscope of 170 times according to the traditional gravity positioning method, the deviation of the coordinate of each device after being positioned relative to the zero position of the housing exceeds 0.3mm, the deviation of the positioning precision requirement of laser edge sealing is not more than 0.02mm, otherwise, the device sealing performance is unqualified due to the deviation of the laser track, and the precision positioning of the contactor in the laser welding technology cannot be met by using the traditional gravity positioning method.

The existing gravity positioning method is that the bottom surface of a contactor to be edge-sealed of an L-shaped mounting rack is supported by a clamp, and the deviation is large after positioning and locking due to the influence of resistance welding deformation of the L-shaped mounting rack.

Disclosure of Invention

In order to solve the problems in the prior art, an object of the present invention is to provide a de-gravity positioning method for a contactor with an L-shaped mounting bracket, which can eliminate the influence of welding deformation of the mounting bracket and the contactor housing on the positioning accuracy and ensure the accurate positioning.

In order to achieve the purpose of the invention, the de-gravity positioning method for the contactor with the L-shaped mounting frame is provided, wherein the bottom surface of the contactor with the L-shaped mounting frame to be edge-sealed is suspended when the contactor is positioned.

The bottom surface of the contactor to be edge sealed with the L-shaped mounting frame is positioned in a hanging mode, the welding surface of the housing matched with the base is directly positioned, and the precision of the laser focal length in the welding process is improved; the influence of welding deformation of the mounting frame and the contactor housing on the positioning precision is eliminated, and the precision positioning is ensured.

The invention also provides a positioning edge sealing fixture for realizing the gravity-removing positioning method, which comprises a positioning main body, a positioning block and a locking device, wherein the positioning main body is provided with an abdicating groove and a sliding table, and the locking device is fixed on the positioning main body and can fix a contactor to be edge sealed, which is arranged in the abdicating groove.

In some embodiments, the specific structure of the avoiding groove comprises a bottom surface, a first side surface and a second side surface, and the bottom surface, the first side surface and the second side surface are perpendicular in pairs.

In some embodiments, the positioning block comprises a positioning table and waist tables arranged on two sides of the positioning table, and the length of each waist table is greater than that of the sliding table but less than the sum of the length of the abdicating groove and the length of the sliding table. The positioning of the contactor to be sealed is facilitated.

In some embodiments, the positioning table is provided with a handle table, and the positioning block can be conveniently slid by the handle table, so that the positioning is facilitated.

In order to be able to better define the position of the positioning block, in some embodiments, a positioning element for defining the position of the positioning block is provided on the slide.

The beneficial effects of the invention include:

1. the bottom surface of the contactor to be edge-sealed with the L-shaped mounting frame is positioned in a hanging mode, the welding surface of the housing matched with the base is directly positioned, and the precision of the laser focal length in the welding process is improved; the influence of welding deformation of the mounting frame and the contactor housing on the positioning precision is eliminated, and the precision positioning is ensured;

2. the deviation range of the positioning accuracy is 0.01-0.04 mm, and the positioning accuracy is improved by more than 10 times.

Drawings

FIG. 1 is a schematic view of a contactor with an L-shaped mounting bracket;

FIG. 2 is a schematic structural view of an L-shaped mounting bracket;

FIG. 3 is a schematic structural diagram of a positioning body according to the present invention;

FIG. 4 is a schematic structural diagram of a positioning block according to the present invention;

FIG. 5 is a schematic structural view of a locking device according to the present invention;

FIG. 6 is a schematic view of the overall structure of the positioning fixture of the present invention;

FIG. 7 is a schematic view of the positioning assembly of the contactor with the L-shaped mounting bracket using the positioning fixture of the present invention;

in the figure: 1-a positioning main body, 2-a positioning block, 3-a locking device, 11-an abdicating groove, 12-a sliding table, 13-a fixing table, 21-a positioning table, 22-a waist table, 31-an installation block, 32-a pressing block, 33-a locking piece, 111-a bottom surface, 112-a first side surface, 113-a second side surface, 211-a handle table and 121-a positioning piece.

Detailed Description

The technical solutions provided by the present invention are further described in detail with reference to the accompanying drawings and specific embodiments.

The invention provides a de-gravity positioning method of a contactor with an L-shaped mounting frame, aiming at solving the problems that the positioning precision is low and the precision positioning of the contactor in the laser welding technology cannot be met in the existing gravity positioning method.

The positioning method can be realized by any positioning fixture, and comprises the specific steps of positioning the contactor to be edge sealed with the L-shaped mounting rack in the fixture, lifting the contactor to be edge sealed with the L-shaped mounting rack to enable the bottom surface of the contactor to be edge sealed to be suspended to finish positioning, and then performing edge sealing welding by laser.

The positioning fixture capable of implementing the positioning method of the invention is provided, and the structure of the fixture is illustrated by fig. 3-6, as shown in the figure, the positioning fixture comprises a positioning main body 1, a positioning block 2 and a locking device 3, wherein the positioning main body 1 is provided with an abdicating groove 11 and a sliding table 12, and the locking device 3 is fixed on the positioning main body 1 and can fix a contactor to be edge-sealed which is arranged in the abdicating groove 11. The abdicating groove 11 can adopt any structure, the abdicating groove 11 herein comprises a bottom surface 111, a first side surface 112 and a second side surface 113, the bottom surface 111, the first side surface 112 and the second side surface 113 are vertical in pairs, the first side surface 112 and the second side surface 113 form an L shape, bosses are further arranged on the second side surface 112 and the second side surface 113, and the bosses on the two side surfaces form an L shape.

After the contactor to be edge sealed with the L-shaped mounting rack is pushed to the position of the abdicating groove 11, the positioning block 2 slides along the sliding table 12 to be positioned on the top surface of the abdicating groove 11, at the moment, the contactor to be edge sealed with the L-shaped mounting rack is lifted upwards by hands, the contactor to be edge sealed with the L-shaped mounting rack is fixed by the locking device 3 immediately after being attached to the positioning block 2, the contactor to be edge sealed with the L-shaped mounting rack is positioned, then the positioning block 2 slides along the sliding table 12 to ensure that the positioning block 2 is not positioned on the top surface of the abdicating groove 11, and the contactor to be edge sealed with the L-shaped mounting rack is completely released, as shown; and (4) loosening the locking device 3 after laser sealing welding is started to take out the contactor to be sealed with the L-shaped mounting rack.

Wherein, locating piece 2 can adopt any kind of locating piece, provides a simple structure's locating piece here, and its structure is as shown in fig. 4, and whole locating piece 2 is "forked tail" type, included location platform 21 with set up in the waist platform 22 of location platform 21 both sides, the length of waist platform 22 is greater than the length of slip table 12, is convenient for can lie in the top surface of groove 11 of stepping down when slip table 12 slides, make the contact ware of treating banding of taking L type mounting bracket can laminate with waist platform 22.

In order to better position the positioning block 2 on the contactor to be sealed with the L-shaped mounting rack, the two sides of the sliding table 12 are provided with fixing tables 13 matched with the waist table 22, the positioning table 21 is placed on the sliding table 12 to be in planar contact with the sliding table 12, and the waist table 22 is matched with the fixing tables 13; the positioning table 21 is pushed along the direction of the abdicating groove 11, the waist table 22 is positioned on the top surface of the abdicating groove 11, and when the contactor with the L-shaped mounting frame for sealing the edge is used, the positioning block 2 is positioned better under the action of the fixing table 13.

11. In order to slide the positioning block 2 easily, a table 211 is provided on the positioning table 21, and the positioning block 2 can be slid easily by the table 211.

In addition, in order to conveniently position the positioning block 2, a positioning element 121 is disposed on the sliding table 12, the positioning element 121 is disposed on one side of the sliding table 12 close to the receding groove 11, and when the positioning block 2 slides to the positioning element 121 along the sliding table 12 in the direction of the receding groove 11, the positioning element 121 limits the positioning block to prevent the positioning block 2 from continuously sliding in the direction of the receding groove 11. The positioning member 121 may be of any structure, such as a pin, or a block.

The locking device 3 used in the positioning jig of the present invention may be any one of those that are available, and one of the following two configurations is used herein, and the following two configurations are provided herein:

1. the locking device 3 comprises an installation block 31, a pressing block 32 and a locking member 33, one end of the installation block 31 is fixed on the positioning main body 11, the pressing block 32 is installed at the other end of the installation block 32 through the locking member 33, and the relative distance between the pressing block 32 and the installation block 31 can be adjusted by adjusting the locking member 33, so that the pressing block 32 can press the contactor to be sealed in the abdicating groove 11; the locking piece 33 is a cylindrical structure with external threads and can be a screw rod or a screw; in cooperation therewith, the locking device 3 is provided with an internally threaded hole (mounting hole with internal thread) which is adapted to the external thread of the locking member 33. The relative distance between the pressing block 32 and the mounting block 31 can be adjusted by screwing the twist locking piece 33, so that the pressing block 32 can press the contactor to be sealed in the yielding groove 11.

2. The locking device 3 comprises a mounting block 31 and a pressing block 32, one end of the mounting block 31 is fixed on the positioning main body 1, and the pressing block 32 is mounted at the other end of the mounting block 31 through a compression spring. The pressing block 32 can press the contactor to be sealed in the yielding groove 11 through the expansion performance of the pressure spring.

The positioning fixture provided by the invention completely abdicates the L-shaped mounting frame and the spot-welded bottom surface and side surface in the positioning process, and realizes a positioning mode of completely removing gravity by matching and positioning the positioning block 2 and the locking device 3 together when in use.

The invention provides a positioning method and a positioning fixture, which are mainly applied to positioning and locking of laser sealing of housings of military contactors, relays, microwave devices and the like, and belong to the technical field of special welding precision positioning fixture design.

In order to show that the positioning precision deviation range is 0.01-0.04 mm, the positioning precision is improved by more than 10 times, the projection amplification ratio is 1000: 1 through conclusive data obtained through measurement that the total number of at least ten batches exceeds more than 1000 after projection amplification, the positioning deviation precision range is obtained by converting the actual deviation size through measuring the deviation size on a large projection screen, the overall precision is good, and part of data is shown in a table 1.

TABLE 1 results of precision measurement

As shown in Table 1, the present invention has a positioning accuracy deviation range of 0.01 to 0.04mm and a positioning accuracy improved by more than 10 times.

The embodiments described above are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.

Claims

1. A gravity-removing positioning method for a contactor with an L-shaped mounting frame is characterized in that: the method comprises the step of suspending the bottom surface of a contactor to be sealed with an L-shaped mounting rack when the contactor is positioned.

2. The utility model provides a take gravity location banding anchor clamps that remove of L type mounting bracket contactor which characterized in that: this anchor clamps include location main part (1), locating piece (2) and locking device (3), be provided with groove of stepping down (11) and slip table (12) on location main part (1), locking device (3) are fixed in on location main part (1) and can be opposite to place in the groove of stepping down (11) interior treat banding contactor fixes.

3. The de-graving positioning edge banding fixture with L-mount contactors of claim 2, wherein: the abdicating groove (11) comprises a bottom surface (111), a first side surface (112) and a second side surface (113), wherein the bottom surface (111), the first side surface (112) and the second side surface (113) are vertical in pairs.

4. The de-graving positioning edge banding fixture with L-mount contactors of claim 2, wherein: the positioning block (2) comprises a positioning table (21) and waist tables (22) arranged on two sides of the positioning table (21).

5. The de-gravity positioning edge banding clamp with L-mount contactor of claim 4, wherein: and fixing tables (13) matched with the waist table (22) are arranged on two sides of the sliding table (12).

6. The de-graving positioning edger clamp with L-mount contactor as claimed in claim 4 or 5, wherein: the positioning table (21) is provided with a handle table (211).

7. The de-graving positioning edger clamp with L-mount contactor as claimed in claim 4 or 5, wherein: and a positioning piece (121) is arranged on the sliding table (12).

8. The de-graving positioning edge banding fixture with L-mount contactors of claim 7, wherein: the positioning piece (121) is arranged on one side, close to the receding groove (11), of the sliding table (12).

9. The de-graving positioning edge banding fixture with L-mount contactors of claim 2, wherein: locking device (3) are including installation piece (31), suppression piece (32) and retaining member (33), the one end of installation piece (31) is fixed in on location main part (1), suppression piece (32) pass through retaining member (33) install in the other end of installation piece (31), through adjusting retaining member (33) are adjustable suppression piece (32) with relative distance between installation piece (31) makes suppression piece (32) can support to press and arrange in the contact ware of waiting to banding in the groove of stepping down (11).

10. The de-graving positioning edge banding fixture with L-mount contactors of claim 2, wherein: the locking device (3) comprises an installation block (31) and a pressing block (32), one end of the installation block (31) is fixed on the positioning main body (1), and the pressing block (32) is installed at the other end of the installation block (31) through a pressure spring.