Auxiliary tool for tinning of DIP packaging operational amplifier

Abstract

The utility model provides an auxiliary tool for tinning of a DIP packaging operational amplifier. The auxiliary tool comprises a bottom plate, a fence, a handle, a cover plate and a pressing strip. The rectangular frame fence is fixed on the top surface of the bottom plate; a plurality of grooves which are arranged in parallel, have the same depth and width and are used for placing DIP packaging operational amplifiers are formed in the middle of the bottom plate, device pins can penetrate through the grooves and extend out of the bottoms of the grooves, and the two handles are vertically and symmetrically arranged at the two ends of the top surface of the fence; one end of the depression bar is rotatably connected to one side of the top of the fence, and the other end abuts against the top surface of the cover plate; the cover plate is located at the top of the DIP packaging operational amplifier and used for pressing the device under the pressing effect of the pressing strip, and the cover plate is made of materials which cannot cause electrostatic charge transfer due to contact or induction. By adopting the auxiliary tool disclosed by the utility model, the exposed lengths of the pins can be consistent, the consistency of the tinning height is ensured, the tinning quality fluctuation caused by human factors during manual handheld operation is avoided, and the operation is safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electronic assembly technology, more particularly to a kind of DIP encapsulation operational amplifier auxiliary tool for tinning. BACKGROUND

[0002] Before welding operation is carried out to THT through-hole plug-in component, soldering operation needs to be carried out to its pin, so as to increase the weldability of component.DIP encapsulation dual-in-line plug-in component belongs to one kind of through-hole plug-in component, for the dual-in-line plug-in operational amplifier of DIP encapsulation class, traditional tinning method is to use artificial hand-held tweezers to clamp component, then tin pot or electric solder is used to carry out soldering operation to pin, which is inefficient, and tinning quality is subject to the skill level of operator, with certain human influence factor, and quality consistency cannot be guaranteed;And tweezers clamping is unreliable, clamping force is too large to cause damage to the appearance of component, clamping force is too small, and component may exist the risk of falling, and the tin liquid splashed by component falling into tin pot can scald operator, with security risk. SUMMARY

[0003] The utility model aims at overcoming the insufficient of the prior art that tinning efficiency is low, quality consistency is poor and there is security risk for DIP encapsulation dual-in-line plug-in component using tweezers clamping, and provides a kind of DIP encapsulation operational amplifier auxiliary tool for tinning.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows:

[0005] A kind of DIP encapsulation operational amplifier auxiliary tool for tinning, including bottom plate, fence, handle, cover plate and batten;

[0006] The fence is rectangular frame structure, and the fence is fixed on the top surface of the bottom plate;

[0007] The bottom plate has several parallelly arranged grooves with equal width and depth in the middle part, the grooves are used to embed the DIP encapsulation operational amplifier, the pin of the DIP encapsulation operational amplifier can pass through the groove and extend from the bottom of the groove, and the groove is located in the fence frame;

[0008] Two handles are vertically symmetrically arranged at both ends of the top surface of the fence;

[0009] One end of the batten is rotatably connected to one side of the top of the fence, and the other end is used to press the top surface of the cover plate;

[0010] The cover plate is located on the top of the DIP encapsulation operational amplifier, and the cover plate is used to press the DIP encapsulation operational amplifier under the pressing action of the batten, and the cover plate is made of material that will not cause electrostatic charge transfer due to contact or induction.

[0011] Further, the pressing strip comprises a first inclined section, a second inclined section and a curved section connected in sequence.

[0012] The first inclined section gradually extends upward from one end thereof, and the other end of the first inclined section is connected with the end of the second inclined section.

[0013] The second inclined section extends downward from the connection between the first inclined section and the second inclined section, and the end of the second inclined section is connected with the curved section.

[0014] The connection between the second inclined section and the curved section has a downward protruding convex part, which can be in contact with the top surface of the fence when the pressing strip is not used, and can abut against the top surface of the cover plate when the pressing strip is used.

[0015] Further, the first inclined section extends upward along a first set angle first, and then extends upward along a second set angle, and the second set angle is greater than the inclination angle of the second inclined section; and the length of the second inclined section is greater than the length of the first inclined section.

[0016] Further, the curved section deviates from one end connected with the second inclined section, and first bends upward, and then extends along the length direction of the second inclined section to the direction close to the connection between the first inclined section and the second inclined section.

[0017] Further, the handle is a rectangular frame structure, and the handle is integrally processed with the fence.

[0018] Further, the handle and the fence are made of synthetic stone.

[0019] Further, the pressing strip is made of ordinary stainless steel material.

[0020] The utility model has the advantages that:

[0021] 1. The utility model discloses a bottom plate and a handle, a plurality of recesses for embedding DIP packaging operational amplifier devices are designed on the bottom plate, and the width and depth of all recesses are respectively same, so that the length (i.e. tin-bushing height) of the pin of the device exposed downward from the recess is consistent, the consistency of tin-bushing quality is ensured, and tin-bushing quality fluctuation caused by artificial factors when manually operating is avoided.

[0022] 2. A plurality of recesses for embedding DIP packaging operational amplifier devices are designed on the tooling of the utility model, a plurality of devices can be simultaneously clamped, the pin tin-bushing operation of the plurality of devices can be completed in batches using a tin-bushing machine (tin pot), and in the embodiment, 56 devices can be simultaneously tin-bushed in single operation, and the production efficiency is greatly improved.

[0023] 3. The handle is made of heat-insulating and tin-adsorbing synthetic stone, which ensures the safety of the operator, and the handle is arranged at both ends of the groove, which conforms to the daily operation habit and saves time and effort.

[0024] 4. The utility model discloses still design pressure bar and apron, when tin -bushing will apron place at DIP package operational amplifier device top, through pressure bar press down apron, can avoid the tool in the tin pot when going too fast, because tension causes device floating.

[0025] 5. The utility model discloses simple structure, low in manufacturing cost, and strong universality, can according to tin -bushing size adjustment groove depth, and the practicality is strong. DETAILED DESCRIPTION

[0026] Figure 1 It is the three -dimensional schematic diagram of the utility model's auxiliary tool, wherein the cover plate is not shown in the drawing;

[0027] Figure 2 It is the front view of Figure 1 ;

[0028] Figure 3 It is the top view of Figure 1 ;

[0029] Figure 4 It is the side view of Figure 1 .

[0030] In the drawing: 1 - bottom plate, 2 - fence, 3 - handle, 4 - pressure bar, 401 - first inclined section, 402 - second inclined section, 403 - curved section, 404 - convex part, 5 - groove. DETAILED DESCRIPTION

[0031] The embodiments of the utility model are described in detail below, and the embodiments are exemplary and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0032] Refer to Figures 1-4The embodiment provides a kind of DIP package operational amplifier auxiliary tool for tin, including bottom plate 1, fence 2, handle 3, pressing strip 4 and cover plate.Fence 2 is rectangular frame structure, is fixed on bottom plate 1 by bolt and nut, and handle 3 is vertically fixed in the top of fence 2.The middle part of bottom plate 1 has several parallel recesses, and the recess is used for embedding the DIP package operational amplifier, and the pin of DIP package operational amplifier can pass through the recess and extend from the bottom of recess, and the recess is located in the frame of fence 2.The width and depth of each recess on the bottom plate are same, so that the length of pin exposed by multiple DIP package operational amplifiers installed on the bottom plate is consistent, to ensure the consistency of tin height.The one end of pressing strip 4 is rotatably connected to the top of the fence on one side, and the other end is used to press the cover plate placed on the top of DIP package operational amplifier, so as to press the DIP package operational amplifier, prevent the DIP package operational amplifier from floating up due to tension when the tool sinks quickly in the tin pot, and affect the tin quality.

[0033] The installation base of the whole tool of bottom plate 1, and the installation hole is opened on the top surface of the bottom plate on both sides, for fixing fence 2 and pressing strip, to realize the combination and fixation between fence 2 and bottom plate 1, fence 2 and pressing strip 4, to play the role of carrier and support.The depth and width of the recess processed on the bottom plate are determined according to the requirements of device manual and process file.The depth and width of the recess when tinning different specifications of devices are clearly specified in the requirements of manual and process file, and the corresponding selection can be selected according to the requirements of manual and the specification of device to be tinned.In the case that the machining precision can be realized, the width and depth of the recess are as close as possible to the width and depth required by the technical file, to avoid the tinning defects caused by the transverse displacement of the device.In addition, the bottom surface of the bottom plate 1 will directly contact the liquid solder during tinning, and also plays the role of heat insulation, to avoid the inconvenience of operator holding operation due to the high temperature of handle.The width and depth of the recess on the bottom plate are same, to facilitate the pin tinning operation of DIP package operational amplifier of the same specification.

[0034] The fence 2 is rectangular frame structure, and is installed at the central position of the bottom plate.The fence plays the role of connecting upper and lower, is used for connecting bottom plate downward, and is connected by bolt and nut, to facilitate disassembly and replacement;is used for supporting handle 3 upward, and the installation hole is reserved on one side of the top surface of fence, for connecting with one end of pressing strip.In addition, fence 2 makes the device placement area independent, which can improve the attention of operator to the area from visual, to find excess, defects or other abnormal conditions in advance, and take corresponding measures to avoid defects to subsequent process.Fence 2 is also used for supporting the cover plate placed on the top thereof.

[0035] The handle 3 rectangular frame structure is integrally processed with the fence 2. The frame handle design meets the use function while reducing the overall weight of the auxiliary tool. Considering the need for heat insulation and tin resistance, the handle 3 and the fence 2 in this embodiment are made of synthetic stone material. The design of the handle avoids the risk of slipping of the device when using traditional tweezers clamping device for tin lining, which may fall into the tin pot, and the splashed tin liquid may scald the operator, ensuring the safety of the operator. And the handle is set on both sides of the fence, which meets the operation habit and saves time and effort for the operator.

[0036] The pressing strip 4 is a curved strip made of ordinary stainless steel and used for pressing on the top surface of the cover plate. One end of the pressing strip is rotatably connected to the top surface of one side of the fence through a bolt and a nut. Specifically, the pressing strip 4 includes a first inclined section 401, a second inclined section 402 and a curved section 403 connected in sequence. The first inclined section 401 gradually extends upward from one end, and the other end of the first inclined section 401 is connected to the end of the second inclined section 402. The second inclined section extends downward from the connection between the first inclined section 401 and the second inclined section, and the second inclined section is connected to the end of the curved section. The connection between the second inclined section 402 and the curved section 403 has a downward protruding protrusion 404, which is a circular arc. The protrusion 404 can be in contact with the top surface of the fence when the pressing strip is not used, and can abut against the top surface of the cover plate when the pressing strip is used.

[0037] The first inclined section extends upward at a first angle first, and then extends upward at a second angle, and the second angle is greater than the inclination angle of the second inclined section; and the length of the second inclined section is greater than the length of the first inclined section. The end of the curved section 403 away from the connection with the second inclined section is first bent upward, and then extends in the length direction of the second inclined section to the connection between the first inclined section and the second inclined section.

[0038] The cover plate is designed from the perspective of redundancy design on the basis of consistent groove depth, which is not shown in the figure. The cover plate is used in cooperation with the pressing strip 4 to press the tin-coated device, eliminates the problem of device floating due to tension when the auxiliary tool sinks too fast below the liquid surface, and further ensures the consistency of the tin-coating height. The cover plate is a rectangular cover plate, and the operator can flexibly select the size of the cover plate according to actual needs. When the size of the cover plate is smaller than the size of the rectangular hole in the middle of the fence, the cover plate can be directly placed on the top of the DIP packaged operational amplifier. When the size of the cover plate is larger than the size of the rectangular hole in the middle of the fence, the cover plate can be directly placed on the top surface of the fence. The material of the cover plate is not limited, and materials that can cause static charge transfer due to contact or induction, such as plastic and rubber, cannot be used. The material selection of the cover plate belongs to the public known requirements in the industry, as long as it meets the requirements of static electricity control. In actual application, when the top surface of the DIP packaged operational amplifier to be tin-coated is lower than the top surface of the fence, one or two cover plates can be selected according to the distance between the top surface of the DIP packaged operational amplifier to be tin-coated and the top surface of the fence, and the thickness of the cover plate, to ensure that the top surface of the cover plate is flush with the top surface of the fence after the cover plate is placed, so that the DIP packaged operational amplifier to be tin-coated can be reliably pressed by the pressing strip when the pressing strip is pressed on the top surface of the cover plate.

[0039] The process of tin-coating the DIP packaged operational amplifier using the auxiliary tool of the utility model is as follows:

[0040] Firstly, twist the pressing strip and slightly lift it upwards, and the resistance should be felt, which proves that the state of the pressing strip is qualified and meets the tool use conditions.

[0041] Then, after removing the excess in the groove area, the DIP packaged operational amplifier to be tin-coated is placed in the groove of the bottom plate in order, which should avoid scratching the pins of other devices and ensure that the characters on the device are clear and visible.

[0042] Next, after checking that the DIP packaged operational amplifier is placed flat, the cover plate is placed on the top of the device body, the pressing strip is twisted, and the convex part of the pressing strip contacts the top surface of the cover plate. The DIP packaged operational amplifier to be tin-coated is pressed by the pressing strip and the cover plate.

[0043] Finally, hold the two side handles with both hands, slowly and uniformly move towards the liquid surface of the tin pot, and when the bottom surface of the bottom plate is in parallel contact with the liquid surface of the tin pot, keep still for 1-3 seconds, then lift the handles upwards, move the auxiliary tool away from above the tin pot, rotate the pressing strip to make it separate from the cover plate, remove the cover plate, and check the tin-coating quality of the devices one by one.

[0044] After inspection, the tin-coating height of each pin of the DIP packaged operational amplifier is consistent.

[0045] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. An auxiliary tooling for soldering a DIP-packaged operational amplifier, characterized in that, Includes base plate, fence, handles, cover plate and molding strips; The fence is a rectangular frame structure and is fixed to the top surface of the base plate; The base plate has several parallel grooves of equal width and depth in the middle. The grooves are used to embed the DIP packaged operational amplifier. The pins of the DIP packaged operational amplifier can pass through the grooves and extend from the bottom of the grooves. The grooves are located within the fence frame. The two handles are arranged vertically and symmetrically at both ends of the top surface of the fence; One end of the pressure strip is rotatably connected to one side of the top of the fence, and the other end is used to press against the top surface of the cover plate; The cover plate is located on top of the DIP packaged operational amplifier and is used to press the DIP packaged operational amplifier under the pressure of the pressure strip. The cover plate is made of a material that will not cause electrostatic charge transfer due to contact or induction.

2. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 1, characterized in that, The pressure strip includes a first inclined section, a second inclined section, and a curved section connected in sequence; The first inclined segment extends upward gradually from one end, and the other end of the first inclined segment is connected to the end of the second inclined segment; The second inclined segment extends downward at the junction of the first inclined segment and the second inclined segment, and the second inclined segment is connected to the end of the curved segment; The second inclined section has a downwardly protruding protrusion at the connection with the curved section. The protrusion can contact the top surface of the fence when no pressure strip is used, and can abut against the top surface of the cover plate when the pressure strip is used.

3. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 2, characterized in that, The first inclined segment first extends upward at a set first angle, and then extends upward at a set second angle, with the set second angle being greater than the inclination angle of the second inclined segment; and the length of the second inclined segment is greater than the length of the first inclined segment.

4. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 2, characterized in that, The curved section bends upward at the end away from the connection with the second inclined section, and then bends and extends along the length of the second inclined section toward the connection between the first and second inclined sections.

5. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 4, characterized in that, The handle is a rectangular frame structure, and the handle is integrally processed with the fence.

6. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 1 or 5, characterized in that, The handle and the railing are made of synthetic stone.

7. The auxiliary tooling for soldering a DIP-packaged operational amplifier according to claim 6, characterized in that, The pressure strip is made of ordinary stainless steel.

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