Selective wave soldering tin dragging sheet

Abstract

The utility model relates to the technical field of tin dragging sheets, in particular to a selective wave soldering tin dragging sheet which comprises a wave crest carrier and a tin dragging sheet connecting assembly arranged on the upper end face of the wave crest carrier, a connecting groove is formed in the upper end face of the wave crest carrier, and mounting holes are formed in the positions, located on the inner walls of the two sides of the connecting groove, of the wave crest carrier. And a plurality of groups of pins are arranged on one side of the tin dragging sheet connecting assembly. The second sliding rod is pulled upwards, the first wedge block is aligned with the connecting groove to be inserted, then the second sliding rod is loosened, the second wedge block slides downwards along the inclined face of the first wedge block under the reverse elastic force of the second spring, and the first wedge block drives the sliding sleeve to slide along the first sliding rod and compress the first spring under the action of the second wedge block. In the process, the first wedge block slides along the inner wall of the connecting groove until the inserting rod is inserted into the mounting hole, at the moment, the tin dragging sheet is mounted on the wave crest carrier, external tools are not needed for mounting, operation is convenient, time is saved, and preparation is made for subsequent welding.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drag tin sheet technical field especially relates to selective wave crest welding drag tin sheet. BACKGROUND

[0002] Generally, the tin dragging sheet is installed at the tin mounting position of the wave crest welding furnace fixture of the PCB board to solve the problem that the PCB board is easy to appear tin short circuit after passing through the furnace, which is common on the multi-pin components.

[0003] At present, most of the tin dragging sheets are installed on the wave crest welding furnace fixture through screws, which needs to be installed with the aid of tools, is relatively cumbersome, occupies more time and is inconvenient to use. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research and, after a lot of creative labor, completed the utility model.

[0005] Specifically, the technical problem to be solved by the utility model is to provide a selective wave crest welding tin dragging sheet to solve the technical problem that most of the tin dragging sheets are installed on the wave crest welding furnace fixture through screws at present, which needs to be installed with the aid of tools, is relatively cumbersome, occupies more time and is inconvenient to use.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The selective wave crest welding tin dragging sheet comprises a wave crest carrier and a tin dragging sheet connecting assembly arranged on the upper end face of the wave crest carrier, the upper end face of the wave crest carrier is provided with a connecting groove, the wave crest carrier is provided with mounting holes on the inner walls on both sides of the connecting groove, one side of the tin dragging sheet connecting assembly is provided with a plurality of groups of pins, the tin dragging sheet connecting assembly comprises a connecting seat arranged on the upper end of the connecting groove, the bottom end of the connecting seat is provided with a tin dragging sheet, the inner cavity of the connecting seat is provided with two groups of first sliding rods which are symmetrical to each other, the outer walls of the first sliding rods are sleeved with two groups of sliding sleeves which are symmetrical to each other, the lower ends of the sliding sleeves are connected with first wedges, the ends of the first wedges which are away from each other are connected with insertion rods, the ends of the sliding sleeves which are away from each other are provided with first springs, the upper ends of the connecting seat are inserted with two groups of second sliding rods which are symmetrical to each other, the lower ends of the second sliding rods are connected with second wedges, and the outer walls of the second sliding rods on the upper ends of the second wedges are sleeved with second springs.

[0008] As an improved technical scheme, the overall thickness of the tin dragging sheet is between 0.5 mm and 1.1 mm.

[0009] As an improved technical scheme, the material of the tin dragging sheet is a tin-plated steel plate.

[0010] As an improved technical solution, the sliding sleeve is movably sleeved on the outer wall of the first sliding rod, and the front and rear ends of the first spring are respectively fixedly connected to the inner wall of the sliding sleeve and the connecting seat. The first spring is movably sleeved on the upper end of the outer wall of the first sliding rod.

[0011] As an improved technical solution, the first wedge and the second wedge are provided with matching inclined surfaces at their adjacent ends. The inclined surfaces of the first wedge and the second wedge are parallel to each other, and the lower end face of the second wedge can slide along the upper surface of the first wedge.

[0012] As an improved technical solution, the second slide rod is movably inserted into the upper end of the connecting seat, and the upper and lower ends of the second spring are respectively fixedly connected to the inner wall of the connecting seat and the upper end of the second wedge. The second spring and the second wedge are both located between the two sets of first slide rods, and the width of the second wedge is less than the distance between the two sets of first slide rods.

[0013] As an improved technical solution, the first wedge is movably inserted into the inner wall of the connecting groove, and the first wedge can slide along the inner wall of the connecting groove. The insertion rod is movably inserted into the mounting hole, and the lower end of the first wedge is in contact with the bottom end of the connecting groove.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] This invention utilizes a solder dragging assembly. By pulling the second slide rod upwards, the first wedge is aligned with the connecting groove and inserted. Then, the second slide rod is released, and under the reverse force of the second spring, the second wedge slides downwards along the inclined surface of the first wedge. Under the action of the second wedge, the first wedge drives the sliding sleeve to slide along the first slide rod and compresses the first spring. During this process, the first wedge slides along the inner wall of the connecting groove until the insertion rod is inserted into the mounting hole. At this point, the solder dragging assembly is installed onto the wave soldering carrier without the need for external tools. This convenient operation saves time and prepares the machine for subsequent soldering. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the selective wave soldering drag sheet of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the wave carrier for selective wave soldering of solder sheets according to this utility model.

[0019] Figure 3 The drawing tin connecting assembly for selective wave-soldering of the drawing tin of the utility model is a partial cross-section three-dimensional structure schematic view.

[0020] Figure 4 The drawing tin connecting assembly for selective wave-soldering of the drawing tin of the utility model is a partial cross-section three-dimensional structure schematic view.

[0021] Figure 5 The drawing tin connecting assembly for selective wave-soldering of the drawing tin of the utility model is a partial cross-section three-dimensional structure schematic view.

[0022] Explanation of reference signs:

[0023] 1, wave peak carrier; 2, drawing tin connecting assembly; 201, connecting seat; 202, drawing tin; 203, first sliding rod; 204, sliding sleeve; 205, first wedge block; 206, insertion rod; 207, first spring; 208, second sliding rod; 209, second spring; 210, second wedge block; 3, connecting groove; 4, mounting hole; 5, pin. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0027] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0028] As Figure 1 and Figure 5 As shown in the drawings, the embodiment provides a selective wave soldering tin dragging piece, which comprises a wave peak carrier 1 and a tin dragging piece connecting assembly 2 arranged on the upper end face of the wave peak carrier 1. The upper end face of the wave peak carrier 1 is provided with a connecting groove 3. The wave peak carrier 1 is provided with mounting holes 4 on the inner walls on both sides of the connecting groove 3. One side of the tin dragging piece connecting assembly 2 is provided with a plurality of pin groups 5. The tin dragging piece connecting assembly 2 comprises a connecting seat 201 arranged on the upper end of the connecting groove 3. The bottom end of the connecting seat 201 is provided with a tin dragging piece 202. Two groups of first sliding rods 203 which are symmetrical to each other are arranged in the inner cavity of the connecting seat 201. Two groups of sliding sleeves 204 which are symmetrical to each other are arranged on the outer walls of the first sliding rods 203. The lower ends of the sliding sleeves 204 are connected with first wedges 205. The ends of the first wedges 205 which are away from each other are connected with insertion rods 206. The ends of the sliding sleeves 204 which are away from each other are provided with first springs 207. Two groups of second sliding rods 208 which are symmetrical to each other are inserted into the upper end of the connecting seat 201. The lower ends of the second sliding rods 208 are connected with second wedges 210. The outer walls of the second sliding rods 208 on the upper ends of the second wedges 210 are provided with second springs 209.

[0029] The overall thickness of the tin dragging piece 202 is between 0.5mm and 1.1mm.

[0030] The material of the tin dragging piece 202 is tin-plated steel plate.

[0031] The sliding sleeve 204 is movably sleeved on the outer wall of the first sliding rod 203. The front and rear ends of the first spring 207 are fixedly connected with the sliding sleeve 204 and the inner wall of the connecting seat 201 respectively. The first spring 207 is movably sleeved on the outer wall of the first sliding rod 203.

[0032] The ends of the first wedge 205 and the second wedge 210 which are close to each other are both provided with matching inclined surfaces. The inclined surfaces of the first wedge 205 and the second wedge 210 are parallel to each other. The lower end surface of the second wedge 210 can slide along the upper surface of the first wedge 205.

[0033] The second slide rod 208 is movably inserted at the upper end of the connecting seat 201, the upper and lower ends of the second spring 209 are fixedly connected with the inner wall of the connecting seat 201 and the upper end of the second wedge block 210 respectively, the second spring 209 and the second wedge block 210 are located between the two groups of first slide rods 203, and the width of the second wedge block 210 is less than the distance between the two groups of first slide rods 203.

[0034] The first wedge block 205 is movably inserted in the inner wall of the connecting groove 3, the first wedge block 205 can slide along the inner wall of the connecting groove 3, the insertion rod 206 is movably inserted in the mounting hole 4, and the lower end of the first wedge block 205 is attached to the bottom end of the connecting groove 3.

[0035] The overall thickness of the tin-dragging sheet 202 is preferably controlled to be 0.5mm to 1.1mm, when the thickness is less than 0.5mm, the overall hardness of the tin-dragging sheet 202 is not enough, and deformation is prone to occur, and when the thickness exceeds the height of the pin 5 by more than 0.5mm, the soldering tin of the nozzle is prone to bifurcate between the tin-dragging sheet 202 and the tin-collecting sheet, when the tin-dragging sheet 202 needs to be installed, the second slide rod 208 is pulled upwards, the second slide rod 208 slides along the connecting seat 201 and drives the second wedge block 210 to compress the second spring 209, in this process, the second wedge block 210 slides upwards along the inclined surface of the first wedge block 205, under the reverse elastic force of the first spring 207, the sliding sleeve 204 slides along the first slide rod 203 and approaches each other, so that the two groups of first wedge blocks 205 approach each other, the first wedge block 205 is inserted into the connecting groove 3 in a targeted manner, then the second slide rod 208 is released, under the reverse elastic force of the second spring 209, the second wedge block 210 slides downwards along the inclined surface of the first wedge block 205, under the action of the second wedge block 210, the first wedge block 205 drives the sliding sleeve 204 to slide along the first slide rod 203 and compresses the first spring 207, in this process, the first wedge block 205 slides along the inner wall of the connecting groove 3, until the insertion rod 206 is inserted into the mounting hole 4, at this time, the tin-dragging sheet 202 is installed on the wave peak carrier 1, without the aid of external tools, the installation is convenient, time is saved, and preparation is made for the subsequent welding.

[0036] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A selective wave soldering tin-drag sheet, comprising a wave carrier (1) and a tin-drag sheet connecting assembly (2) arranged on the upper end face of the wave carrier (1), characterized in that: The peak carrier (1) upper end face is provided with a connecting groove (3), the peak carrier (1) is located on the both sides of the connecting groove (3) and is provided with a mounting hole (4) on the inner wall, one side of the tin strip connecting assembly (2) is provided with a plurality of pins (5), the tin strip connecting assembly (2) comprises a connecting seat (201) arranged on the upper end of the connecting groove (3), the connecting seat (201) is provided with a tin strip (202) at the bottom end, the connecting seat (201) is provided with two groups of first sliding rods (203) which are symmetrical to each other in the inner cavity, the first sliding rod (203) is provided with two groups of sliding sleeves (204) which are symmetrical to each other on the outer wall, the sliding sleeve (204) is connected with a first wedge block (205) at the lower end, the first wedge block (205) is connected with a plug rod (206) at the end away from each other, the sliding sleeve (204) is provided with a first spring (207) at the end away from each other, the connecting seat (201) is provided with two groups of second sliding rods (208) which are symmetrical to each other at the upper end, the second sliding rod (208) is connected with a second wedge block (210) at the lower end, and the second sliding rod (208) is provided with a second spring (209) on the outer wall of the upper end of the second wedge block (210).

2. The selective wave soldering tin strip according to claim 1, characterized in that: The overall thickness of the tin strip (202) is between 0.5mm and 1.1mm.

3. The selective wave soldering tin-elimination sheet according to claim 1, characterized by: The material of the tin strip (202) is tin-plated steel plate.

4. The selective wave soldering tin-elimination sheet according to claim 1, characterized by: The sliding sleeve (204) is movably sleeved on the outer wall of the first sliding rod (203), and the first spring (207) is movably sleeved on the outer wall of the first sliding rod (203).

5. The selective wave soldering tin-elimination sheet according to claim 1, characterized by: The first wedge block (205) and the second wedge block (210) are provided with matching inclined surfaces at the end close to each other, the inclined surfaces of the first wedge block (205) and the second wedge block (210) are parallel to each other, and the lower end surface of the second wedge block (210) can slide along the upper surface of the first wedge block (205).

6. The selective wave soldering tin-elimination sheet according to claim 1, characterized by: The second sliding rod (208) is movably inserted into the connecting seat (201) at the upper end, and the second spring (209) is fixedly connected with the inner wall of the connecting seat (201) and the upper end of the second wedge block (210) at the upper and lower ends respectively, the second spring (209) and the second wedge block (210) are located between the two groups of first sliding rods (203), and the width of the second wedge block (210) is less than the distance between the two groups of first sliding rods (203).

7. The selective wave soldering tin-elimination sheet according to claim 1, characterized by: The first wedge block (205) is movably inserted into the inner wall of the connecting groove (3), the first wedge block (205) can slide along the inner wall of the connecting groove (3), the plug rod (206) is movably inserted into the mounting hole (4), and the lower end of the first wedge block (205) is attached to the bottom end of the connecting groove (3).

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