Suction nozzle locking mechanism and solder sucker

Abstract

The utility model belongs to the technical field of tin soldering, and particularly relates to a suction nozzle locking mechanism and a solder sucker, the suction nozzle locking mechanism comprises a clamping sleeve, a locking ring and an elastic element, the clamping sleeve is sleeved outside a receiving part, one end of the clamping sleeve is provided with an inner turnup, and the other end of the clamping sleeve is provided with an outer turnup; the clamping sleeve is sleeved with the locking ring, a locking protrusion protrudes out of the outer circumferential wall of the locking ring, a connecting hole allowing the locking ring to be inserted is formed in the front end of the body, a clamping groove used for clamping the locking protrusion is formed in the inner circumferential wall of the connecting hole, and a penetrating groove allowing the locking protrusion to move to enter and exit from the clamping groove is formed in the groove wall of the front end of the clamping groove in a forward penetrating mode. The elastic element is positioned between the outer flange and the locking ring; according to the utility model, the locking bulge on the locking ring is rotatably clamped into the clamping groove, and meanwhile, the elastic element arranged between the locking ring and the outer flange of the clamping sleeve is used for pressing the outer flange of the clamping sleeve, so that the suction nozzle is clamped between the receiving part and the inner flange of the clamping sleeve, and the locking of the suction nozzle is realized; the suction nozzle can be quickly disassembled and assembled, and the locking force of the suction nozzle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of soldering, and in particular relates to a nozzle locking mechanism and a solder sucker. Background Art

[0002] A solder sucker is generally used to remove electronic components from a circuit board. When the solder joint is heated until the solder melts, the nozzle of the solder sucker is aimed at the solder joint, and the solder is sucked into the soldering tube under a negative pressure environment. However, the temperature of the molten solder is very high, and the high-temperature solder will damage the nozzle during the continuous suction process. Therefore, the nozzle often needs to be replaced. In the prior art, the nozzle is usually fixed with bolts, which makes disassembly more cumbersome and reduces work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the problem that in the process of continuously sucking high-temperature solder, the suction nozzle in the prior art will be damaged by the high-temperature solder, so the suction nozzle often needs to be replaced, and the suction nozzle in the prior art is usually fixed with bolts, which is cumbersome to disassemble and reduces work efficiency. A suction nozzle locking mechanism and a solder sucker are now provided.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a nozzle locking mechanism is used to be arranged on a welding tool, the front end of the main body of the welding tool has a receiving part and a nozzle for being installed at the front end of the receiving part, and the locking mechanism includes:

[0005] A jacket is sleeved outside the receiving portion, wherein one end of the jacket has an inner turning edge and the other end has an outer turning edge;

[0006] The locking ring is sleeved outside the jacket, and a locking protrusion is protruded on the outer peripheral wall of the locking ring. The front end of the main body has a connecting hole for the locking ring to be inserted, and the inner peripheral wall of the connecting hole has a clamping groove for clamping the locking protrusion. The front end groove wall of the clamping groove is penetrated forward by a through groove for the locking protrusion to move in and out of the clamping groove. When the locking protrusion is directly opposite to the through groove, the locking protrusion is moved backward. At this time, the locking protrusion can enter the clamping groove from the through groove, and the locking ring is rotated at a certain angle to make the locking protrusion staggered with the through groove. At this time, the locking protrusion and the clamping groove can be clamped and matched, so as to lock the nozzle, and the front end of the receiving part protrudes forward from the connecting hole;

[0007] and an elastic element, wherein the elastic element is located between the outer flange and the locking ring, and when the rear end of the locking ring moves into the connecting hole so that the locking protrusion is engaged with the locking groove, the locking ring presses the outer flange through the elastic element so that the suction nozzle is clamped between the front end of the receiving portion and the inner flange;

[0008] The above technical solution utilizes the locking protrusion on the locking ring to rotate and engage in the slot, and at the same time utilizes the elastic element arranged between the locking ring and the outer flange of the sleeve to compress the outer flange of the sleeve, thereby clamping the suction nozzle between the receiving part and the inner flange of the sleeve to achieve locking of the suction nozzle, thereby achieving rapid disassembly and assembly of the suction nozzle and better locking effect during installation.

[0009] Furthermore, a spring cavity is provided at the rear end of the inner peripheral wall of the locking ring, the spring cavity surrounds the outer peripheral wall of the jacket, the elastic element is a spring, the spring is located in the spring cavity, and is sleeved outside the receiving portion.

[0010] Furthermore, one end of the spring is fixedly connected to the inner wall of the spring cavity, and the other end is fixedly connected to the outer flange.

[0011] Furthermore, the front end of the locking ring extends out of the connecting hole to form an operating portion and is a hexagonal nut structure.

[0012] Furthermore, there are two locking protrusions, and the two locking protrusions are symmetrically distributed along the axis of the locking ring.

[0013] Furthermore, a rear end of the outer peripheral wall of the suction nozzle protrudes with an abutment protrusion that abuts against the inner flange.

[0014] Furthermore, the rear end of the inner peripheral wall of the suction nozzle is an inner conical surface which is smaller at the front and larger at the rear, and the front end of the outer peripheral wall of the receiving portion is an outer conical surface which is smaller at the front and larger at the rear and matches the inner conical surface.

[0015] Furthermore, a plurality of heat dissipation holes distributed at intervals are opened at the rear end of the jacket along its circumference, and the heat dissipation holes are waist-shaped holes.

[0016] Furthermore, a front channel extending along its axial direction is provided at the center of the suction nozzle, and a rear channel extending along its axial direction is provided at the center of the receiving portion, and the front channel and the rear channel are plugged into and communicated with each other.

[0017] The utility model also provides a solder sucker, which comprises the sucking nozzle locking mechanism.

[0018] The beneficial effects of the utility model are as follows: the utility model utilizes the locking protrusion on the locking ring to rotate and snap into the slot, and at the same time utilizes the elastic force generated by the compression of the elastic element arranged between the locking ring and the outer flange of the sleeve, on the one hand, to generate abutment force between the locking protrusion and the slot wall, thereby realizing the locking of the locking ring and the main body, and on the other hand, to clamp the suction nozzle between the receiving part and the inner flange of the sleeve to realize the locking of the suction nozzle, thereby realizing the rapid disassembly and assembly of the suction nozzle and improving the locking force of the suction nozzle.

[0019] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 is a schematic diagram of the structure of the locking mechanism;

[0022] Figure 2 yes Figure 1 Sectional view in the AA direction;

[0023] Figure 3 yes Figure 2 A partial enlarged view of part B;

[0024] Figure 4 It is a schematic diagram of the structure of the suction nozzle;

[0025] Figure 5 is a schematic diagram of the structure of the locking ring;

[0026] Figure 6 This is a schematic diagram of the structure of the jacket

[0027] Figure 7 is a schematic diagram of the structure of the solder extractor;

[0028] In the figure:

[0029] 1. Main body; 101. Connecting hole; 102. Card slot; 103. Through slot;

[0030] 2. Receiving portion; 201. External cone surface; 202. Rear channel;

[0031] 3. Suction nozzle; 301. Abutment protrusion; 302. Inner cone surface; 303. Front channel;

[0032] 4. Jacket; 401. Inner flange; 402. Outer flange; 403. Heat dissipation hole;

[0033] 5. Locking ring; 501. Locking protrusion; 502. Spring cavity; 503. Operating part;

[0034] 6. Elastic element. DETAILED DESCRIPTION

[0035] The utility model is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model, and the directions and references (for example, up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0036] like Figure 1-3 As shown, a nozzle locking mechanism is used to be arranged on a welding tool. The front end of the main body 1 of the welding tool has a receiving portion 2 and a nozzle 3 for being installed at the front end of the receiving portion 2. The locking mechanism includes a jacket 4, a locking ring 5 and an elastic element 6:

[0037] The jacket 4 is in the shape of a hollow cylinder and is sleeved outside the receiving portion 2. One end of the jacket 4 has an inner flange 401 and the other end has an outer flange 402. The inner flange 401 is located at the front end and the outer flange 402 is located at the rear end.

[0038] The locking ring 5 is sleeved on the outside of the jacket 4, and a locking protrusion 501 is protruded on the outer peripheral wall of the locking ring 5. The locking protrusion 501 can be integrally formed with the locking ring 5 or can be a locking pin fixed on the locking ring 5; the front end of the main body 1 has a connecting hole 101 for inserting the locking ring 5, and the inner peripheral wall of the connecting hole 101 has a clamping groove 102 for clamping the locking protrusion 501, and the front end groove wall of the clamping groove 102 is penetrated forward by a through groove 103 for the locking protrusion 501 to move in and out of the clamping groove 102, and the front end of the receiving part 2 protrudes forward from the connecting hole 101;

[0039] The elastic element 6 is located between the outer flange 402 and the locking ring 5. When the rear end of the locking ring 5 moves into the connecting hole 101 so that the locking protrusion 501 is inserted into the slot 102, the locking ring 5 presses the outer flange 402 through the elastic element 6, so that the nozzle 3 is clamped between the front end of the receiving portion 2 and the inner flange 401.

[0040] When the suction nozzle 3 is disassembled, the locking ring 5 is first rotated to rotate the locking protrusion 501 to be opposite to the through groove 103. Under the action of the elastic element 6, the locking protrusion 501 passes through the card groove 102. At this time, the sleeve 4 and the receiving part 2 are unlocked, and then the sleeve 4 is moved forward to disengage from the receiving part 2, and finally the suction nozzle 3 is taken out from the rear end of the sleeve 4.

[0041] When installing the suction nozzle 3, first insert the suction nozzle 3 from the rear end of the jacket 4 and put the jacket 4 on the outside of the receiving part 2 from front to back, then rotate the locking ring 5 so that the locking protrusion 501 is opposite to the through groove 103 and move the locking protrusion 501 backward. At this time, the locking protrusion 501 can enter the card groove 102 from the through groove 103. At the same time, rotate the locking ring 5 by a certain angle so that the locking protrusion 501 is staggered with the through groove 103. At this time, the locking protrusion 501 and the card groove 102 can be snapped together. At the same time, the locking ring 5 presses the outer flange 402 through the elastic element 6, thereby locking the suction nozzle 3.

[0042] In some examples, a spring cavity 502 is opened at the rear end of the inner wall of the locking ring 5, and the spring cavity 502 passes through the rear end face of the locking ring 5, the spring cavity 502 surrounds the outer wall of the jacket 4, the elastic element 6 is a spring, the spring is located in the spring cavity 502, and is sleeved on the outside of the receiving portion 2. In the process of pressing the outer flange 402 by the spring, forces in two directions are generated at this time, which can not only maintain the locking state but also increase the locking force.

[0043] In some examples, one end of the spring is fixedly connected to the inner wall, and the other end is fixedly connected to the outer flange 402. The spring is pressed between the two and presses the outer flange 402 with its elastic force. The locking ring 5 and the jacket 4 form a whole through the spring.

[0044] In some examples, such as Figure 5 As shown, the front end of the locking ring 5 extends out of the connecting hole 101 to form an operating portion 503, which is a hexagonal nut structure. Since the temperature of the sucked solder is relatively high, the suction nozzle 3 and the locking mechanism both have relatively high temperatures. When installing or removing the suction nozzle 3, the locking ring 5 can be rotated by cooperating with a wrench and the hexagonal nut to avoid direct contact with the locking ring 5 and causing burns. The wrench can be manual or electric.

[0045] In some examples, there are two locking protrusions 501 and they are cylindrical structures with chamfered heads. The two locking protrusions 501 are symmetrically distributed along the axis of the locking ring 5. There are also two through grooves 103, which correspond one-to-one to the two locking protrusions 501, and the bottom of the through grooves 103 is also rounded.

[0046] In some examples, a rear end of the outer peripheral wall of the suction nozzle 3 protrudes with an abutting protrusion 301 that abuts against the inner flange 401 , and the suction nozzle 3 can be clamped between the inner flange 401 and the receiving portion 2 through the abutting protrusion 301 .

[0047] In some examples, such as Figure 4 As shown, the rear end of the inner circumferential wall of the suction nozzle 3 is an inner conical surface 302 which is smaller at the front and larger at the rear, and the front end of the outer circumferential wall of the receiving part 2 is an outer conical surface 201 which is smaller at the front and larger at the rear and matches the inner conical surface 302. When the locking protrusion 501 is inserted into the slot 102, the inner conical surface 302 and the outer conical surface 201 gradually approach each other. The inner conical surface 302 and the outer conical surface 201 are equivalent to two wedge surfaces, which can play a guiding role in the fixing process of the suction nozzle 3 and the receiving part 2 on the one hand, and can improve the locking effect of the suction nozzle 3 and the receiving part 2 on the other hand.

[0048] In some examples, such as Figure 1 and Figure 6As shown, a plurality of heat dissipation holes 403 are provided at intervals along the circumference of the rear end of the jacket 4. The heat dissipation holes 403 are arranged to penetrate from the inner circumferential wall to the outer circumferential wall of the jacket 4 for dissipating the heat inside the jacket 4. The heat dissipation holes 403 are waist-shaped holes extending along the axial direction of the jacket 4. The heat dissipation effect can be further improved by increasing the area of ​​the heat dissipation holes 403.

[0049] In some examples, such as Figure 2 As shown, the center of the suction nozzle 3 is provided with a front channel 303 extending along its axial direction, the front end of the front channel 303 protrudes with a snap-in protrusion, the front end of the inner circumferential wall of the suction nozzle 3 is provided with a snap-in groove, the snap-in protrusion is snapped into the snap-in groove to fix the front channel 303, the center of the receiving part 2 is provided with a rear channel 202 extending along its axial direction, and the rear channel 202 extends out of the front end of the receiving part 2, and the rear end of the suction nozzle 3 is provided with a slot for the rear channel 202 to be inserted, the cross-sectional area of ​​the front channel 303 is smaller than the cross-sectional area of ​​the rear channel 202, the front channel 303 is inserted into the rear channel 202 to connect the two, and after the two are plugged in, a gap is left between the front end of the rear channel 202 and the bottom of the slot.

[0050] In some examples, such as Figure 7 As shown, the welding tool is a solder sucker, and the nozzle locking mechanism is arranged on the solder sucker.

[0051] Working principle:

[0052] In the present invention, the suction nozzle 3 is installed at the front end of the receiving portion 2 through a locking mechanism, and the suction nozzle 3 can move forward and backward along the axial direction of the receiving portion 2 to achieve locking and disengagement with the receiving portion 2.

[0053] When installing the suction nozzle 3, firstly insert the suction nozzle 3 from the rear end of the jacket 4, the inner flange 401 cooperates with the abutting protrusion 301 to limit the freedom of the suction nozzle 3 to move forward, and the jacket 4 is sleeved on the outside of the receiving part 2 from front to back, so as to limit the suction nozzle 3 between the inner flange 401 and the receiving part 2, and then rotate the locking ring 5 to make the locking protrusion 501 face the through groove 103 and move the locking protrusion 501 backward, at this time, the locking protrusion 501 can enter the card groove 102 from the through groove 103, and rotate the locking ring 5 by a certain angle to make the locking protrusion 501 staggered with the through groove 103, at this time, the card engagement of the locking protrusion 501 and the card groove 102 can be realized, and at the same time, the elastic element located between the locking ring 5 and the outer flange 402 Component 6 is compressed, and elastic element 6 applies a first forward force F1 to locking ring 5, making locking ring 5 have a tendency to move forward, and locking ring 5 applies the first force F1 to the groove wall of slot 102 through locking protrusion 50 to form a third force F3 to the groove wall of slot 102, thereby locking locking ring 5 and main body 1; correspondingly, elastic element 6 applies a second backward force F2 to outer flange 402 to make jacket 4 have a tendency to move backward, and outer flange 402 applies the second force F2 to suction nozzle 3 through inner flange 401 to form a fourth force F4 to suction nozzle 3, thereby clamping suction nozzle 3 between inner flange 401 of jacket 4 and outer conical surface 201 of receiving portion 2.

[0054] When the suction nozzle 3 is disassembled, the locking ring 5 is rotated by a wrench to rotate the locking protrusion 501 to be opposite to the through groove 103, and the elastic element 6 is reset. Under the action of the elastic element 6, the locking protrusion 501 passes through the slot 102 and the through groove 103, and the locking ring 5 is unlocked from the main body 1, and the sleeve 4 is unlocked from the receiving part 2, and then the sleeve 4 is moved forward to disengage from the receiving part 2, and finally the suction nozzle 3 is taken out from the rear end of the sleeve 4.

[0055] The above-mentioned ideal embodiments of the utility model are inspirations. Through the above-mentioned description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A nozzle locking mechanism, used for being arranged on a welding tool, wherein the front end of the main body (1) of the welding tool has a receiving portion (2) and a nozzle (3) for being installed at the front end of the receiving portion (2), characterized in that: The locking mechanism includes: A jacket (4) is sleeved outside the receiving portion (2), wherein one end of the jacket (4) has an inner flange (401) and the other end has an outer flange (402); A locking ring (5) is sleeved outside the jacket (4), a locking protrusion (501) protrudes from the outer peripheral wall of the locking ring (5), the front end of the main body (1) has a connecting hole (101) for inserting the locking ring (5), the inner peripheral wall of the connecting hole (101) has a clamping groove (102) for clamping the locking protrusion (501), the front end groove wall of the clamping groove (102) is penetrated forward by a through groove (103) for the locking protrusion (501) to move in and out of the clamping groove (102), and the front end of the receiving portion (2) protrudes forward from the connecting hole (101); and an elastic element (6), wherein the elastic element (6) is located between the outer flange (402) and the locking ring (5); when the rear end of the locking ring (5) moves into the connecting hole (101) so that the locking protrusion (501) is engaged with the locking groove (102), the locking ring (5) presses the outer flange (402) through the elastic element (6), so that the suction nozzle (3) is clamped between the front end of the receiving portion (2) and the inner flange (401).

2. The nozzle locking mechanism according to claim 1, characterized in that: A spring cavity (502) is provided at the rear end of the inner wall of the locking ring (5), and the spring cavity (502) surrounds the outer wall of the jacket (4). The elastic element (6) is a spring, which is located in the spring cavity (502) and is sleeved outside the receiving portion (2).

3. The nozzle locking mechanism according to claim 2, characterized in that: One end of the spring is fixedly connected to the inner wall of the spring cavity (502), and the other end is fixedly connected to the outer flange (402).

4. The nozzle locking mechanism according to claim 1, characterized in that: The front end of the locking ring (5) extends out of the connecting hole (101) to form an operating portion (503), which is a hexagonal nut structure.

5. The nozzle locking mechanism according to claim 1, characterized in that: There are two locking protrusions (501), and the two locking protrusions (501) are symmetrically distributed along the axis of the locking ring (5).

6. The nozzle locking mechanism according to claim 1, characterized in that: A contact protrusion (301) is protruded from the rear end of the outer peripheral wall of the suction nozzle (3) and is contacted with the inner flange (401).

7. The nozzle locking mechanism according to claim 1, characterized in that: The rear end of the inner peripheral wall of the suction nozzle (3) is an inner conical surface (302) which is smaller at the front and larger at the rear, and the front end of the outer peripheral wall of the receiving portion (2) is an outer conical surface (201) which is smaller at the front and larger at the rear and matches the inner conical surface (302).

8. The nozzle locking mechanism according to claim 1, characterized in that: The rear end of the jacket (4) is provided with a plurality of heat dissipation holes (403) distributed at intervals along its circumference, and the heat dissipation holes (403) are waist-shaped holes.

9. The nozzle locking mechanism according to claim 1, characterized in that: The central part of the suction nozzle (3) is provided with a front channel (303) extending along its axial direction, and the central part of the receiving part (2) is provided with a rear channel (202) extending along its axial direction. The front channel (303) and the rear channel (202) are plugged into and communicated with each other.

10. A solder sucker, characterized in that: It comprises a nozzle locking mechanism as described in any one of claims 1 to 9.

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