Tin scraping device

Abstract

The present invention discloses a tin scraping device, including a scraper assembly, and also including: a bracket, a side wall of the bracket is provided with an annular groove; a lifting assembly matched with the annular groove, the scraper assembly is connected to the lifting assembly; a reciprocating drive mechanism driving the lifting assembly to reciprocate along the annular groove, the lifting assembly is connected to the reciprocating drive mechanism; the annular groove includes: a first slot section guiding the translation of the lifting assembly; a second slot section guiding the return of the lifting assembly, the height position of the second slot section is higher than the height position of the first slot section; a first guide slot guiding the lifting assembly to descend from the second slot section to the first slot section, one end of the first guide slot is connected to the first slot section, and the other end of the first guide slot is connected to the second slot section; a second guide slot guiding the lifting assembly to rise from the first slot section to the second slot section, one end of the second guide slot is connected to the first slot section, and the other end of the second guide slot is connected to the second slot section. The present invention has the advantage of smooth scraping of slag.

Description

Technical Field

[0001] The invention relates to a tin scraping device. Background Art

[0002] In the electronics industry, molten tin is often used to protect the copper wire welding points and prevent oxidation, or to perform cladding welding on the wire ends that need to be welded.

[0003] The surface of the molten tin liquid is in direct contact with the air, which easily forms an oxide film. The oxide film is a thin solid tin film, and the film surface also contains many impurities floating in the molten tin liquid. If the oxide film and floating objects on the surface are not scraped off, the wire ends to be protected will first contact with the oxide film when immersed in the tin liquid. The oxide film will prevent the tin liquid from adhering to the wire ends, which will directly cause problems such as weak tin adhesion and incomplete tin adhesion surface. At the same time, the oxide film will increase the resistance of the contact point, affecting the conduction and use of the circuit. Therefore, the oxide film and floating objects on the surface need to be scraped off on time.

[0004] At present, tin slag is mostly scraped off manually using a scraper. However, the temperature of molten tin is usually above 250°C, which can easily cause burns to personnel or damage the scraper. In addition, the scraper must be gently immersed and lifted when scraping the oxide film of the tin liquid. Otherwise, the tin liquid may easily splash out of the container under the action of vibration, causing burns to the operator and other personnel. Summary of the invention

[0005] The invention provides a tin scraping device which can scrape slag steadily.

[0006] The technical solution to achieve the above purpose is as follows:

[0007] The tin scraping device includes a scraper assembly and further includes:

[0008] A bracket, wherein a side wall of the bracket is provided with an annular groove;

[0009] A lifting assembly matched with the annular groove, and a scraper assembly connected to the lifting assembly;

[0010] A reciprocating drive mechanism driving the lifting assembly to reciprocate along the annular groove, the lifting assembly being connected to the reciprocating drive mechanism;

[0011] The annular groove comprises: a first groove section for guiding the translation of the lifting assembly;

[0012] A second slot section for guiding the return of the lifting assembly, the second slot section being located at a height higher than the first slot section;

[0013] Guide the lifting assembly to descend from the second slot section to the first guide slot in the first slot section, one end of the first guide slot is connected to the first slot section, and the other end of the first guide slot is connected to the second slot section;

[0014] A second guide groove guides the lifting assembly to rise from the first groove section to the second groove section, one end of the second guide groove is connected to the first groove section, and the other end of the second guide groove is connected to the second groove section.

[0015] When the present invention is working: after the lifting assembly cooperates with the first slot section, the scraper assembly follows the lifting assembly to descend to the lowest position. At this time, the scraper assembly cooperates with the surface of the tin liquid. Under the drive of the reciprocating drive mechanism, the scraper assembly follows the lifting assembly to move linearly along the first slot section. During the movement, the scraper assembly scrapes the surface of the tin liquid, thereby scraping away the residue on the surface of the tin liquid in one direction. When the lifting assembly moves to the junction of the first slot section and the second guide groove, at this time, under the influence of the profile of the second guide groove, the lifting assembly forms an upward movement, thereby causing the lifting assembly to enter the second slot section, so that the scraper assembly is separated from the surface of the tin liquid. Under the drive of the reciprocating drive mechanism, the lifting assembly moves linearly along the second slot section and returns. When the lifting assembly moves to the junction of the second slot section and the first guide groove, at this time, under the influence of the profile of the first guide groove, the lifting assembly forms a downward movement, thereby causing the lifting assembly to enter the first slot section again, so that the scraper assembly is combined with the surface of the tin liquid again, and this is repeated.

[0016] The beneficial technical effect of the present invention is that the present invention can automatically realize the lifting and lowering of the scraper assembly during the scraping process, and complete a whole cycle of unidirectional reciprocating motion. The present invention can smoothly perform the scraping action, and will not splash the high-temperature tin liquid out of the container, thereby avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the tin scraping device;

[0018] Figure 2 For Figure 1 A three-dimensional image with some parts hidden on the basis;

[0019] Figure 3 For Figure 1 The front view after hiding some parts on the basis;

[0020] Figure 4 For along Figure 3 The cross-sectional view of the PP line in;

[0021] Figure 5 is a schematic diagram of a second guide plate body;

[0022] Figure 6 is a schematic diagram of a first guide plate;

[0023] Markings in the attached drawings:

[0024] Scraper assembly A, bracket B, annular groove C, first groove section C1, second groove section C2, first guide groove C3, second guide groove C4, lifting assembly D, reciprocating drive mechanism E;

[0025] Scraper body 1, connecting arm 2, support plate 3, through hole 4, support block 5, first guide plate 6, joint 6a, missing groove 6b, second guide plate 7, second guide plate body 7a, main body 7a1, first convex plate 7a2, second convex plate 7a3, notch 7a4, mounting groove 7a5, pin shaft 7b, torsion spring 7c, one-way valve core 7d, pressure block 7e, first guide rod 8, guide assembly 9, first lifting block 10, assembly hole 10a, step hole 10b, second lifting block 11, second guide rod 12, spring 13, motor 14, screw rod 15, nut 16, slider 17. DETAILED DESCRIPTION

[0026] Combine the following Figures 1 to 6 The present invention will be described.

[0027] like Figures 1 to 6 The tin scraping device of the present invention comprises a scraper assembly A, a bracket B, a lifting assembly D, and a reciprocating drive mechanism E. The side wall of the bracket B is provided with an annular groove C, the lifting assembly D cooperates with the annular groove C, the scraper assembly A is connected to the lifting assembly D, the reciprocating drive mechanism E drives the lifting assembly D to reciprocate along the annular groove C, and the lifting assembly D is connected to the reciprocating drive mechanism E. The reciprocating drive mechanism E drives the lifting assembly D to move linearly. Since the lifting assembly D cooperates with the annular groove C, when the lifting assembly D moves linearly, it also moves downward or upward in some places according to the contour path of the annular groove C.

[0028] like Figures 1 to 6 The annular groove C includes a first groove section C1 for guiding the translation of the lifting component, a second groove section C2 for guiding the return of the lifting component, a first guide groove C3 for guiding the lifting component to descend from the second groove section C2 to the first groove section C1, and a second guide groove C4 for guiding the lifting component to rise from the first groove section C1 to the second groove section C2. The height position of the second groove section C2 is higher than the height position of the first groove section C1. One end of the first guide groove C3 is connected to the first groove section C1, and the other end of the first guide groove C3 is connected to the second groove section C2; one end of the second guide groove C4 is connected to the first groove section C1, and the other end of the second guide groove C4 is connected to the second groove section C2.

[0029] like Figures 1 to 6, the first slot section C1 is a straight slot, and the second slot section C2 is also a straight slot, so when the lifting assembly D is matched with the first slot section C1 or the second slot section C2, the movement of the lifting assembly D is a linear motion under the drive of the reciprocating drive mechanism E. The first guide groove C3 and the second guide groove C4 are arc grooves or cam grooves, so when the lifting assembly D is matched with the first guide groove C3 under the drive of the reciprocating drive mechanism E, the lifting assembly D forms a descending motion along the first guide groove C3, and when the lifting assembly D is matched with the second guide groove C4, the lifting assembly D forms an ascending motion along the second guide groove C4.

[0030] like Figures 1 to 6 In the present invention, the scraper assembly A can only move in one direction when scraping tin, that is, when the lifting assembly D cooperates with the first slot section C1, the scraper assembly A follows the lifting assembly D to descend to the lowest position. At this time, the scraper assembly A cooperates with the surface of the tin liquid. Driven by the reciprocating drive mechanism E, the scraper assembly A follows the lifting assembly D to move linearly along the first slot section C1. During this movement, the scraper assembly A scrapes the surface of the tin liquid, thereby scraping away the residue on the surface of the tin liquid in one direction. When the lifting assembly D moves to the junction of the first slot section C1 and the second guide groove C4, at this time, the lifting assembly D is affected by the contour of the second guide groove C4, so that the lifting assembly D forms an upward movement, thereby guiding the lifting assembly D to enter the second slot section C2. In this way, the scraper assembly A is separated from the surface of the tin liquid. Driven by the reciprocating drive mechanism E, the lifting assembly D moves linearly along the second slot section C2 and returns. When the lifting assembly D moves to the junction of the second slot section C2 and the first guide slot C1, the lifting assembly D is affected by the contour of the first guide slot C3, so that the lifting assembly D forms a downward movement, thereby guiding the lifting assembly D to enter the first slot section C1 again, so that the scraper assembly A is combined with the surface of the tin liquid again, and this is repeated. It can be seen that the function of the above-mentioned annular groove C is to make the scraper assembly A combine with or separate from the surface of the tin liquid during the scraping process. The advantage of the scraper assembly A separating from the surface of the tin liquid during the return process is that it can avoid bringing the scraped tin slag back into the tin liquid.

[0031] like Figures 1 to 6 The scraper assembly A includes a scraper body 1 and a connecting arm 2. The connecting arm 2 is connected to the lifting assembly D, and the connecting arm 2 is also connected to the scraper body 1. The connecting arm 2 is provided with a strip-shaped mounting hole. The scraper body 1 and the connecting arm 2 are connected by bolts. The bolts cooperate with the strip-shaped mounting holes, so that the position of the scraper body 1 can be adjusted as needed.

[0032] like Figures 1 to 6The bracket B includes at least two supporting plates 3 and a guide plate mechanism that are arranged opposite to each other. The supporting plate 3 is provided with a through hole 4. At least a part of the guide plate mechanism is located in the through hole 4. The supporting plate 3 and the hole wall of the through hole 4 form the annular groove C. In this embodiment, the annular groove C is formed by the guide plate mechanism and the through hole 4, which helps to reduce the difficulty of processing and makes the profile of the annular groove C easy to control.

[0033] like Figures 1 to 6 The guide plate mechanism is provided with a groove, the middle part of which is the second groove section C2, the two ends of the groove and the hole wall of the through hole 4 constitute a part of the first guide groove C3 and the second guide groove C4, and the other part of the first guide groove C3 and the second guide groove C4 and the first groove section C1 are formed between the guide plate mechanism and the hole wall of the through hole 4.

[0034] like Figures 1 to 6 The guide plate mechanism includes a support block 5, a first guide plate 6, and a second guide plate 7. The support block 5 is connected to the support plate 3. At least a portion of the first guide plate 6 is located in the through hole 4. The first guide plate 6 is fixed to the support block 5. At least a portion of the second guide plate 7 is located in the through hole 4. The second guide plate 7 is fixed to the support plate 3 or the support block 5 or the first guide plate 6. The groove is arranged on the second guide plate 7.

[0035] like Figures 1 to 6 In this embodiment, the support block 5 is located outside the through hole 4, the first guide plate 6 is located inside the through hole 4, one end of the support block 5 is fixedly connected to the support plate 3, the other end of the support block 5 is located outside the through hole 4, and the first guide plate 6 is fixed to the support block 5. One end of the first guide plate 6 is bent and extends upward to form a triangular joint portion 6a, the other end of the first guide plate 6 is recessed inward to form a notch 6b, and the end of the other end of the first guide plate 6 is provided with an arc chamfered portion.

[0036] like Figures 1 to 6 The second guide plate 7 includes a second guide plate body 7a, a pin 7b, a torsion spring 7c, a one-way valve core 7d, and a pressure block 7e. The pin 7b is fixed to the second guide plate body 7a, the torsion spring 7c is sleeved on the pin 7b, one end of the one-way valve core 7d is hinged on the pin 7b, the other end of the one-way valve core 7d is located in the second guide groove C4, the one-way valve core 7d is matched with one end of the torsion spring 7c, the pressure block 7e is fixed to the second guide plate body 7a, the pressure block 7e is sleeved on the pin 7b so that the one-way valve core 7d is located between the pressure block 7e and the second guide plate body 7a, and the other end of the torsion spring 7c is matched with the second guide plate body 7a or the pressure block 7e. The second guide plate body 7a is provided with a support portion 7f for supporting the one-way valve core 7d, so that the one-way valve core 7d is restricted between one end of the torsion spring 7c and the support portion 7f.

[0037] like Figures 1 to 6When the lifting assembly D rises from the first slot section C1 through the second guide groove C4 to the second slot section C2, when the lifting assembly D passes through the second guide groove C4, the force of the lifting assembly D pushes the one-way valve core 7d to overcome the elastic force of the torsion spring 7c, so that the one-way valve core 7d rotates. When the lifting assembly D is separated from the one-way valve core 7d, the one-way valve core 7d is reset under the tension of the torsion spring 7c. During the tin scraping process, if the lifting assembly D descends from the second slot section C2 through the second guide groove C4 to the first slot section C1, it will be blocked by the one-way valve core 7d and cannot pass through the second guide groove C4. Therefore, the one-way valve core 7d can be set to avoid the situation of reverse scraping of the tin liquid surface.

[0038] like Figures 1 to 6 The second guide plate body 7a includes a main body 7a1, a first convex plate 7a2, and a second convex plate 7a3. The first convex plate 7a2 and the second convex plate 7a3 are both fixed on the same side wall surface of the main body 7a1. The first convex plate 7a2 is located above the second convex plate 7a3. The first convex plate 7a2 and the second convex plate 7a3 form the second groove section C2. One end of the first convex plate 7a2 is hook-shaped. The length of the second convex plate 7a3 is less than that of the first convex plate 7a2. One end of the second convex plate 7a3 is provided with an inclined surface that matches the combining portion 6a. The other end of the second convex plate 7a3 is provided with a notch 7a4 and a mounting groove 7a5. One end of the one-way valve core 7d is matched in the notch 7a4, and a part of the pressing block 7e is matched with the mounting groove 7a5.

[0039] like Figures 1 to 6 , the lifting assembly D includes a first guide rod 8, a lifting block, and a guide assembly 9. The first guide rod 8 is connected to the reciprocating drive mechanism E. The lifting block is provided with an assembly hole 10a. The first guide rod 8 and the assembly hole 10a are clearance-matched. One end of the guide assembly 9 is connected to the lifting block, and the other end of the guide assembly 9 is matched with the annular groove C. In this embodiment, the guide assembly 9 is composed of a shaft and a bearing. One end of the shaft is fixed to the lifting block, and the bearing is installed at the other end of the shaft. The bearing is matched with the annular groove C. The bearing rolls in the annular groove C to reduce friction and reduce the resistance of the guide assembly 9 when it forms a descending motion along the first guide groove C3, or reduce the resistance of the guide assembly 9 when it forms an ascending motion along the second guide groove C4.

[0040] like Figures 1 to 6 If the tin liquid solidifies or the solid tin is not completely melted, when the scraper assembly A encounters the solidified tin liquid or the solid tin that is not completely melted, the solid tin will impact the entire scraper assembly A, thereby causing the tin liquid to vibrate and cause the tin liquid to splash. To solve this problem, the lifting assembly D in this embodiment adopts the following structure:

[0041] like Figures 1 to 6The lifting block includes a first lifting block 10 and a second lifting block 11 that can be lifted relative to the first lifting block 10, and the assembly hole 10a is set on the first lifting block 10. The lifting assembly D also includes a second guide rod 12 and a spring 13. The first lifting block 10 is provided with a step hole 10b, one end of the second guide rod 12 is clearance-matched with the step hole 10b, and the other end of the second guide rod 12 is connected to the second lifting block 11; the spring 13 is sleeved on the second guide rod 12, one end of the spring 13 is matched with the step hole 10b, the second guide rod 12 is provided with a limit portion 12a, and the other end of the spring 13 is matched with the limit portion 12a.

[0042] like Figures 1 to 6 Since the second lifting block 11 and the first lifting block 10 are split structures, the second lifting block 11 can be lifted and lowered independently. When the scraper assembly A encounters solidified tin liquid or incompletely melted solid tin, the scraper assembly A is subject to resistance, which causes the scraper assembly A to move upward, thereby actively avoiding the solidified tin liquid or incompletely melted solid tin, thereby causing the second lifting block 11 to move upward, and the spring 13 is compressed when the second lifting block 11 moves upward. When the scraper assembly A is no longer subject to resistance, the scraper assembly A and the second lifting block 11 return to their original positions under the action of gravity and the tension of the spring 13. Through the above structure, the scraper assembly A actively avoids the solidified tin liquid or incompletely melted solid tin, thereby preventing the tin liquid from splashing out due to impact, thereby avoiding safety accidents.

[0043] like Figures 1 to 6 The reciprocating drive mechanism E includes a motor 14, a screw rod 15, a nut 16, and a slider 17. The screw rod 15 is connected to the output end of the motor 14, and the nut 16 is threadedly connected to the screw rod 15; the slider 17 is fixed to the nut 16, and the slider 17 is slidably matched with the bracket B.

[0044] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A tin scraping device, comprising a scraper assembly (A), characterized in that: The scraper assembly (A) comprises: a scraper body (1) and a connecting arm (2), wherein the connecting arm (2) is connected to the lifting assembly (D), and the connecting arm (2) is also connected to the scraper body (1); Also includes: The bracket (B) has an annular groove (C) on its side wall; the bracket (B) comprises: At least two supporting plates (3) arranged opposite to each other, each supporting plate (3) being provided with a through hole (4); A guide plate mechanism, at least a portion of which is located in the through hole (4), and the support plate (3) and the wall surface of the through hole (4) form the annular groove (C); A lifting assembly (D) matched with the annular groove (C), and a scraper assembly (A) connected to the lifting assembly (D); a reciprocating drive mechanism (E) for driving the lifting assembly (D) to reciprocate along the annular groove (C), the lifting assembly (D) being connected to the reciprocating drive mechanism (E); The annular groove (C) comprises: a first groove section (C1) for guiding the translation of the lifting assembly; A second slot section (C2) for guiding the return of the lifting assembly, the second slot section (C2) being located at a height higher than the first slot section (C1); The guide plate mechanism is provided with a groove, the middle part of the groove is the second groove section (C2), the two ends of the groove and the hole wall of the through hole (4) form a first guide groove (C3) and a part of the second guide groove (C4), and the other part of the first guide groove (C3) and the second guide groove (C4) and the first groove section (C1) are formed between the guide plate mechanism and the hole wall of the through hole (4); A guide lifting assembly is lowered from the second slot section (C2) to the first guide slot (C3) in the first slot section (C1), one end of the first guide slot (C3) is connected to the first slot section (C1), and the other end of the first guide slot (C3) is connected to the second slot section (C2); A second guide groove (C4) guides the lifting component to rise from the first groove section (C1) to the second groove section (C2); one end of the second guide groove (C4) is connected to the first groove section (C1), and the other end of the second guide groove (C4) is connected to the second groove section (C2).

2. The tin scraping device according to claim 1, characterized in that: The guide plate mechanism comprises: A support block (5), the support block (5) is connected to the support plate (3); a first guide plate (6), at least a portion of the first guide plate (6) being located in the through hole (4), and the first guide plate (6) being fixed to the support block (5); A second guide plate (7), at least a portion of the second guide plate (7) is located in the through hole (4), the second guide plate (7) is fixed to the support plate (3) or the support block (5) or the first guide plate (6), and the groove is provided on the second guide plate (7).

3. The tin scraping device according to claim 2, characterized in that: The second guide plate (7) comprises: A second guide plate body (7a); A pin shaft (7b), the pin shaft (7b) being fixed to the second guide plate body (7a), A torsion spring (7c), the torsion spring (7c) is sleeved on the pin (7b); A one-way valve core (7d), one end of the one-way valve core (7d) is hinged on the pin shaft (7b), the other end of the one-way valve core (7d) is located in the second guide groove (C4), and the one-way valve core (7d) cooperates with one end of the torsion spring (7c); A pressure block (7e) is fixed to the second guide plate body (7a), and the pressure block (7e) is sleeved on the pin shaft (7b) so that the one-way valve core (7d) is located between the pressure block (7e) and the second guide plate body (7a), and the other end of the torsion spring (7c) cooperates with the second guide plate body (7a) or the pressure block (7e).

4. The tin scraping device according to claim 2, characterized in that: The second guide plate body (7a) is provided with a supporting portion (7f) for supporting the one-way valve core (7d).

5. The tin scraping device according to claim 1, characterized in that: The lifting assembly (D) includes: A first guide rod (8), the first guide rod (8) being connected to the reciprocating drive mechanism (E); A lifting block, wherein an assembly hole (10a) is provided on the lifting block, and the first guide rod (8) is clearance-matched with the assembly hole (10a); A guide assembly (9), one end of the guide assembly (9) is connected to the lifting block, and the other end of the guide assembly (9) is matched with the annular groove (C).

6. The tin scraping device according to claim 5, characterized in that: Lifting block includes: A first lifting block (10), wherein the assembly hole (10a) is arranged on the first lifting block (10); A second lifting block (11) capable of being raised and lowered relative to the first lifting block (10); The lifting assembly (D) also includes: A second guide rod (12), wherein the first lifting block (10) is provided with a step hole (10b), one end of the second guide rod (12) is clearance-matched with the step hole (10b), and the other end of the second guide rod (12) is connected to the second lifting block (11); A spring (13) is sleeved on the second guide rod (12), one end of the spring (13) cooperates with the step hole (10b), a limiting portion (12a) is provided on the second guide rod (12), and the other end of the spring (13) cooperates with the limiting portion (12a).

7. The tin scraping device according to claim 1, characterized in that: The reciprocating drive mechanism (E) comprises: Motor (14); A screw rod (15), the screw rod (15) is connected to an output end of the motor (14); A nut (16), the nut (16) being threadedly connected to the screw rod (15); The slider (17) is fixed with the nut (16), and the slider (17) is slidably matched with the bracket (B).

Images