Tin skin scraping device

Abstract

The utility model provides a tin skin scraping device which can realize the horizontal movement and the vertical movement of a scraping plate by only one driving device so as to reduce the manufacturing cost of the device, and relates to the technical field of tinning. A tin skin scraping device comprises a support, a sliding block, a driving device, a lifting block and a scraping plate used for scraping tin skin, the sliding block is horizontally and linearly connected to the support in a sliding mode so that the sliding block can slide back and forth in the horizontal linear direction, the lifting block is vertically connected to the sliding block in a sliding mode, the scraping plate is installed on the lifting block, and the driving device is arranged on the scraping plate. The driving device is connected with the sliding block so as to drive the sliding block to horizontally and linearly slide; the guide groove is formed in one side of the lifting block and is in sliding fit with the lifting block so as to guide the lifting block to move in the shape like a Chinese character'hui 'in the process of horizontally and linearly sliding back and forth along with the sliding block. The device disclosed by the utility model is simpler in structure and lower in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to tin technology field, concretely is a tin skin scraping device. BACKGROUND

[0002] In the motor manufacturing process, tin is added to the copper end of the bare copper wire, which is a common anti-oxidation operation. Currently, the commonly used method is to add molten tin to a tin bath with heat preservation or heating function, and then to grab the workpiece that needs to be tinned into the tin liquid for tinning.

[0003] Since the tin is easy to be oxidized after being heated to form a liquid state, a layer of oxidized tin (tin dioxide) will form on the surface of the tin liquid. If this layer of oxidized tin is not scraped in time during the tinning process, it will adhere to the surface of the workpiece, which will affect the quality of the workpiece tinning. To achieve the scraping of the tin, the tin scraping plate needs to realize two-directional movement: horizontal movement and vertical movement. The vertical movement makes the scraping plate enter or leave the tin liquid, and the horizontal movement makes the scraping plate scrape the tin in a horizontal direction or return to the initial position of the tin scraping. In order to scrape the tin repeatedly, the specific working mode of the scraping plate is as follows: the scraping plate moves vertically downward, the scraping plate enters the tin liquid to a certain depth, then the scraping plate moves in a horizontal direction (usually the width or length direction of the tin bath) to scrape the tin on the surface of the tin liquid, after the scraping plate moves to the position, the scraping plate moves vertically upward to make the scraping plate leave the tin liquid, and finally the horizontal movement returns to the initial position for the next tinning of the workpiece. That is, the scraping plate makes a return movement in one working cycle. Currently, the horizontal movement and vertical movement of the scraping plate of the tin scraping device are generally realized by different driving devices, and the manufacturing cost of the entire tin scraping device is relatively high. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a tin scraping device that only needs one driving device to realize the horizontal movement and vertical movement of the scraping plate, so as to reduce the manufacturing cost of the device.

[0005] The technical scheme adopted by the utility model to solve the technical problem is: a tin scraping device, comprising a support, a sliding block, a driving device, a lifting block and a scraping plate for scraping tin, the sliding block is horizontally and linearly slidably connected to the support, so as to slide back and forth along a horizontal linear direction, the lifting block is vertically slidably connected to the sliding block, the scraping plate is installed on the lifting block, and the driving device is connected with the sliding block to drive the horizontal linear sliding of the sliding block.

[0006] Further, the device comprises a meandering structure guide groove arranged on one side of the lifting block and in sliding cooperation with the lifting block to guide the meandering movement of the lifting block during the horizontal linear sliding of the slider, the guide groove comprises an upper horizontal section and a lower horizontal section arranged above and below along the sliding direction of the slider, and further comprises an ascending guide section arranged at one end of the lower horizontal section and inclined to the outside of the guide groove to enable the lifting block to gradually ascend from the lower horizontal section into the other end of the upper horizontal section during the horizontal linear sliding of the slider, and a descending guide section arranged at the other end of the upper horizontal section to enable the lifting block to descend from the upper horizontal section into the other end of the lower horizontal section, and the ascending guide section is provided with a one-way passing structure at the connection transition of the ascending guide section and the upper horizontal section to allow the lifting block to pass into the upper horizontal section only in one direction along the ascending guide section.

[0007] Further, the one-way passing structure comprises a reset spring and a baffle arranged at the connection transition of the ascending guide section and the upper horizontal section to control the opening and closing of the ascending guide section, the baffle is arranged in a hinged manner, and during the ascending of the lifting block along the ascending guide section, the lifting block pushes the baffle to rotate around the hinge point to open the ascending guide section, and the reset spring is connected with the baffle to enable the baffle to reverse and reset to close the ascending guide section.

[0008] Further, the driving device is an electric motor, and the electric motor is in transmission connection with the slider through a lead screw in cooperation with the slider.

[0009] Further, the scraper is in vertical sliding connection with the lifting block to be able to slide upward relative to the lifting block, and the lifting block is provided with an elastic member connected with the scraper to hinder the upward sliding of the scraper.

[0010] Further, the scraper is provided with a vertical guide rod, the scraper is in vertical sliding connection with the lifting block through the guide rod, and the elastic member is a compressible spring, the lower end of the spring is in abutment with the guide rod, and the upper end of the spring is in abutment with the lifting block.

[0011] Further, the descending guide section is arranged at the other end of the upper horizontal section in an inclined manner.

[0012] Further, the descending guide section is arranged at the other end of the upper horizontal section in an inwardly inclined manner.

[0013] Further, the lifting block is provided with a roller in rolling cooperation with the guide groove.

[0014] The tin sheet scraping device has the advantages that the tin sheet scraping device is provided with the meandering structure guide groove 6 on one side of the lifting block 3, which is in sliding cooperation with the lifting block 3 to guide the meandering movement of the lifting block 3 during the horizontal linear back-and-forth sliding of the sliding block 2, only one driving device 5 is needed to drive the sliding block to slide back and forth horizontally, and the meandering movement in the scraping plate stroke range can be realized, the structure of the device is simpler, and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a perspective view of the utility model;

[0017] Figure 3 is a structural schematic view of the guide groove;

[0018] Figure 4 is Figure 3 is an enlarged view of A of the utility model;

[0019] Figure 5 is a schematic view of the installation structure of the scraping plate;

[0020] In the drawing: support 1, sliding block 2, lifting block 3, scraping plate 4, driving device 5, guide groove 6, sliding rail 21, guide column 31, roller 32, guide rod 41, elastic member 42, lower horizontal section 61, ascending guide section 62, upper horizontal section 63, descending guide section 64, vertical line 65, baffle 71, reset spring 72, screw rod 8. DETAILED DESCRIPTION

[0021] The utility model is further described below in combination with the drawings and examples.

[0022] As Figures 1 to 4As shown, a tin scraping device of this utility model includes a support 1, a slider 2, a driving device 5, a lifting block 3, and a scraper 4 for scraping the tin surface of the molten tin in the tin bath. The slider 2 is horizontally and linearly slidably connected to the support 1 so that it can slide back and forth along a horizontal straight line. The lifting block 3 is vertically and linearly slidably connected to the slider 2 so that the lifting block 3 can slide up and down relative to the slider 2. The scraper 4 is mounted on the lifting block 3. The driving device 5 is connected to the slider 2 to drive the slider 2 to slide horizontally and linearly. The device also includes a loop-shaped guide groove 6 disposed on one side of the lifting block 3 and slidingly engaged with it to guide the lifting block 3 in a loop-like motion as it slides back and forth horizontally with the slider 2. The guide groove 6 includes an upper horizontal section 63 and a lower horizontal section 61 arranged vertically along the sliding direction of the slider 2. It also includes a rising guide section 62 disposed at one end of the lower horizontal section 61 and inclined outwards towards the guide groove 6, allowing the lifting block 3 to gradually rise from the lower horizontal section 61 into one end of the upper horizontal section 63 as it slides horizontally with the slider 2. A descending guide section 64 disposed at the other end of the upper horizontal section 63, allowing the lifting block 3 to gradually slide down from the upper horizontal section 63 into the other end of the lower horizontal section 61. The transition between the rising guide section 62 and the upper horizontal section 63 is provided with a one-way passage structure that only allows the lifting block 3 to rise along the rising guide section 62 and pass through into the upper horizontal section 63. The descending guide section 64 can be vertically or inclined. The lengths of the upper horizontal section 63 and the lower horizontal section 61 are set according to the distance of the tin foil that the scraper needs to remove.

[0023] The rising guide section 62 is disposed at one end of the lower horizontal section 61 and inclined to the outside of the guide groove 6. That is, with the vertical line 65 passing through the lower horizontal section 61 and at one end of the rising guide section 62 as a reference, the rising guide section 62 is located outside the vertical line 65 (on the side facing away from the center of the guide groove) and inclined outward.

[0024] like Figure 1 As shown in the embodiment of this utility model, the slider 2 achieves a horizontal linear sliding connection with the support 1 by sliding cooperation with the linear slide rail 21 that is horizontally set on its side; the lifting block 3 achieves a vertical sliding connection with the slider 2 by sliding cooperation with the vertical guide post 31 fixed on the slider 2.

[0025] The following is Figure 3The tin foil scraping device of the utility model is provided with a meandering structure guide groove 6 on one side of the lifting block 3, which is in sliding cooperation with the lifting block 3 to guide the meandering movement of the lifting block 3 during the horizontal linear back-and-forth sliding of the sliding block 2; during the process of driving the sliding block 2 to slide back and forth along the horizontal line, when the sliding block 2 slides to the left along the horizontal line, the sliding block 2 drives the lifting block 3 to move leftward, and the height of the lifting block 3 is controlled by the sliding cooperation with the lower horizontal section 61 of the guide groove 6 during the leftward movement of the lifting block 3, so that the height of the lifting block 3 is kept at a certain position, thereby facilitating the tin foil scraping of the scraper 4 installed thereon; after the lifting block slides to the left end of the lower horizontal section 61, the sliding block 2 continues to slide forward under the driving of the driving device 5, and the lifting block 3 gradually slides upward under the guiding action of the upward guiding section 62, so that the scraper 4 gradually leaves the tin liquid, and the lifting block 3 stops at one end of the upper horizontal section 63 through the one-way passing structure; then, the sliding block 2 slides rightward along the horizontal line under the driving of the driving device 5, the sliding block 2 drives the lifting block 3 to move rightward, and the lifting block 3 slides along the upper horizontal section 63 at this time, and the lifting block 3 moves to the right end of the upper horizontal section 63 while keeping the scraper 4 away from the tin liquid; finally, the lifting block 3 slides downward into the right end of the lower horizontal section 61 under the gravity of the lifting block 3 itself, so that the scraper returns to the initial position and enters the tin liquid to a certain depth (the scraper generally extends below the liquid surface by 2-3 mm). The tin foil scraping device of the utility model only needs one driving device 5 to drive the sliding block to slide back and forth along the horizontal line, so that the scraper makes meandering movement within the stroke range, the structure of the device is simpler, and the cost is lower. The utility model is provided with the one-way passing structure, the one-way passing structure can prevent the lifting block 3 from sliding downward along the upward guiding section 62 under the action of gravity and returning to the lower horizontal section 61, and can ensure that the lifting block 3 can enter the upper horizontal section 63 and then return from the upper horizontal section 63 when returning. The upward guiding section 62 is outwardly inclined and arranged at one end of the lower horizontal section, and the scraper moves forward continuously during the process of leaving the tin liquid, so that the tin foil is not brought back to the area from which the tin foil has been removed, which is more favorable for the scraper to remove the tin foil within the stroke range of the lower horizontal section 61 and is more favorable for ensuring the tin quality on the product.

[0026] The driving device 5 can be a pneumatic cylinder, a hydraulic cylinder or a motor. In the embodiment of the utility model, the driving device 5 is a motor, and the motor is in transmission connection with the sliding block 2 through a lead screw 8 in cooperation with the sliding block 2. That is, the motor drives the sliding block 2 to slide back and forth along the horizontal line through the lead screw, and the sliding block 2 slides linearly forward when the motor rotates forward, and the sliding block 2 slides linearly backward when the motor rotates reversely.

[0027] As Figure 4As shown in the utility model embodiment, the one-way passing structure comprises a reset spring 72 and a baffle 71 arranged at a transition position of the upward guiding section 62 and the upper horizontal section 63 to control the opening and closing of the upward guiding section 62, the baffle 71 is hingedly arranged, the lifting block 3 pushes the baffle 71 to rotate around the hinge point to open the upward guiding section 62 in the process of ascending along the upward guiding section 62, and the reset spring 72 is connected with the baffle 71 to push the baffle 71 to reverse and reset after the lifting block passes, so that the upward guiding section 62 is closed. In the figure, the reset spring 72 is a torsion spring. In some embodiments, the one-way passing structure only comprises the hingedly arranged baffle 71, and the baffle 71 is automatically reset by its own gravity, but the reliability of this structure is relatively poor. In some embodiments, the one-way passing structure comprises a plug-in plate and a reset spring, the plug-in plate is transversely inserted into the upward guiding section 62 to control the opening and closing of the upward guiding section 62, when the lifting block 3 ascends along the upward guiding section 62, the lifting block 3 cooperates with the plug-in plate to push the plug-in plate to retract, so that the upward guiding section 62 is opened, and the reset spring makes the plug-in plate reset to extend to close the upward guiding section 62 again.

[0028] The scraper can be fixedly installed on the lifting block 3. Figure 5 As shown in the utility model embodiment, the scraper is installed in the following manner: the scraper 4 is vertically and slidably connected with the lifting block 3 through a guide groove or a guide column, so as to be able to slide upward relative to the lifting block 3, and the lifting block 3 is provided with an elastic element 42 connected with the scraper 4 to hinder the upward sliding of the scraper 4. This installation manner can make the scraper adaptively adjust the position in the upward and downward directions during the process of scraping the tin sheet. For example, when there is un-melted solid tin in the tin groove, the scraper encounters the solid tin, and the elastic element 42 can be deformed to slide upward under the action of the solid tin, so as to bypass the solid tin, and the scraper can be protected from being damaged. The elastic element 42 can be a tension spring or a compression spring, and the elastic element plays a role of ensuring the reset of the scraper.

[0029] In the utility model embodiment, the scraper 4 is provided with a vertical guide rod 41, the guide rod 41 can be fixed on the scraper 4 in a manner of bolt connection, welding or the like, the scraper 4 is vertically and slidably connected with the lifting block 3 through the guide rod 41, the elastic element 42 is a compression spring, the lower end of the spring abuts against the guide rod 41, and the upper end abuts against the lifting block 3.

[0030] When the descending guide segment 64 is vertically arranged, the descending speed of the lifting block 3 from the descending guide segment 64 is relatively large, and the tin liquid is easy to splash in the process of entering the tin liquid by the scraper. In order to reduce the descending speed of the lifting block 3, preferably, the descending guide segment 64 is arranged in an inclined manner. The inclined direction of the descending guide segment 64 relative to the upper horizontal segment 63 can be outward or inward. In the utility model, preferably, the descending guide segment 64 is arranged in an inward inclined manner at the other end of the upper horizontal segment 63. The descending guide segment 64 is arranged in an inward inclined manner at the other end of the upper horizontal segment 63, that is, taking the vertical line passing through one end of the descending guide segment 64 arranged at the upper horizontal segment 63 as a reference, the descending guide segment 64 is inward inclined at the inner side (the side facing the center of the guide groove) of the vertical line. The descending guide segment 64 arranged in an inward inclined manner at the other end of the upper horizontal segment 63 can better ensure that the lifting block 3 moves along the lower horizontal segment 61 in the second cycle. Specifically, as shown in Figure 3 Fig. 4, when the lifting block 3 enters the lower horizontal segment 61 through the descending guide segment 64, in the process of sliding to the left, the lifting block 3 cannot enter the descending guide segment 64, and can only move to the left along the lower horizontal segment 61, so that the tin skin scraped by the scraper can be better ensured.

[0031] In order to reduce the friction between the lifting block 3 and the guide groove 6 and facilitate the sliding of the lifting block 3 in the guide groove 6, the lifting block 3 is provided with a roller 32 in rolling cooperation with the guide groove 6, so as to convert sliding friction into rolling friction.

Claims

1. A tin foil scraping device, characterized in that: The device includes a support (1), a slider (2), a drive device (5), a lifting block (3), and a scraper (4) for scraping off solder. The slider (2) is horizontally and linearly slidably connected to the support (1) so that it can slide back and forth along a horizontal straight line. The lifting block (3) is vertically and linearly slidably connected to the slider (2). The scraper (4) is mounted on the lifting block (3). The drive device (5) is connected to the slider (2) to drive the slider (2) to slide horizontally and linearly. It also includes a spiral guide groove (6) disposed on one side of the lifting block (3) and slidingly engaged with the lifting block (3) to guide the lifting block (3) to make a spiral motion as it slides back and forth horizontally with the slider (2). The guide groove (6) includes an upper horizontal section (63) and a lower horizontal section (61) disposed vertically along the sliding direction of the slider (2). It also includes a section disposed at one end of the lower horizontal section (61) and inclined to the outside of the guide groove (6) so that the lifting block (3) slides horizontally with the slider (2). The upper horizontal section (63) is provided with a rising guide section (62) that gradually rises from the lower horizontal section (61) into one end of the upper horizontal section (63), and a falling guide section (64) that is provided at the other end of the upper horizontal section (63) to allow the lifting block (3) to slide down from the upper horizontal section (63) into the other end of the lower horizontal section (61). The connection transition between the rising guide section (62) and the upper horizontal section (63) is provided with a one-way passage structure that only allows the lifting block (3) to rise along the rising guide section (62) and pass through to enter the upper horizontal section (63).

2. The tin scraping device as described in claim 1, characterized in that: The one-way passage structure includes a return spring (72) and a baffle (71) disposed at the transition point between the rising guide section (62) and the upper horizontal section (63) to control the opening and closing of the rising guide section (62). The baffle (71) is hinged. During the process of the lifting block (3) rising along the rising guide section (62), the lifting block (3) pushes the baffle (71) to rotate around the hinge point, thereby opening the rising guide section (62). The return spring (72) is connected to the baffle (71) so that the baffle (71) reverses and resets, thereby closing the rising guide section (62).

3. The tin scraping device as described in claim 1, characterized in that: The driving device (5) is a motor, which is connected to the slider (2) via a lead screw (8) that cooperates with the slider (2).

4. The tin scraping device as described in claim 1, characterized in that: The scraper (4) is vertically slidably connected to the lifting block (3) so that it can slide upward relative to the lifting block (3). The lifting block (3) is provided with an elastic element (42) connected to the scraper (4) to prevent the scraper (4) from sliding upward.

5. The tin scraping device as described in claim 4, characterized in that: The scraper (4) is provided with a vertical guide rod (41). The scraper (4) is vertically slidably connected to the lifting block (3) through the guide rod (41). The elastic element (42) is a compressible spring. The lower end of the spring abuts against the guide rod (41), and the upper end abuts against the lifting block (3).

6. The tin scraping device as described in claim 1, characterized in that: The descending guide section (64) is inclined at the other end of the upper horizontal section (63).

7. The tin scraping device as described in claim 6, characterized in that: The descending guide section (64) is inclined inward at the other end of the upper horizontal section (63).

8. The tin scraping device as described in claim 1, characterized in that: The lifting block (3) is provided with rollers (32) that roll in cooperation with the guide groove (6).

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