Tin skin scraping device

Abstract

The invention provides a tin skin scraping device which can realize horizontal direction movement and vertical direction 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 is simpler in structure and lower in cost.

Description

Technical Field

[0001] The invention relates to the technical field of tinning, in particular to a tin skin scraping device. Background Art

[0002] In the process of motor manufacturing, tinning the bare copper end of copper wire is a common anti-oxidation operation. At present, the common method is to add the melted tin liquid into a tin bath with insulation or heating function, and then grab the workpiece to be tinned and immerse it into the tin liquid for tinning.

[0003] Since tin is easily oxidized after being heated to form a liquid, a layer of tin oxide (tin dioxide) will form on the surface of the tin liquid. If the tin oxide layer is not scraped off in time during the tinning process, it will adhere to the surface of the workpiece, which will affect the quality of tinning on the workpiece. To scrape off the tin, the tin scraper needs to move in two directions: horizontal and vertical. The vertical movement allows the scraper to enter or leave the tin liquid, and the horizontal movement allows the scraper to scrape off the tin liquid in a horizontal direction or return to the initial position for scraping off the tin. In order to scrape off the tin in a cycle, the specific working method of the scraper is as follows: the scraper moves vertically downward, the scraper enters the tin liquid to a certain depth, and then the scraper moves in a horizontal direction (usually the width or length of the tin tank) to scrape off the tin on the surface of the tin liquid. After the scraper moves into place, the scraper moves vertically upward again to leave the tin liquid, and finally moves horizontally back to the initial position, waiting for the next workpiece to be tinned and repeat the above action to scrape off the tin. That is, the scraper makes a circular motion in one working cycle. At present, the horizontal movement and vertical movement of the scraper of the tin scraping device are generally achieved through different driving devices, respectively, and the manufacturing cost of the entire tin scraping device is relatively high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tin scraping device which only requires one driving device to realize the horizontal and vertical movements of the scraper, so as to reduce the manufacturing cost of the device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a tin scraping device, comprising a support, a slider, a driving device, a lifting block and a scraper for scraping tin, the slider is horizontally and linearly connected to the support so as to be able to slide back and forth along a horizontal straight line direction, the lifting block is vertically and linearly connected to the slider, the scraper is installed on the lifting block, and the driving device is connected to the slider to drive the slider to slide horizontally and linearly;

[0006] The cam is provided with a guide groove of a circular structure which is arranged on one side of the lifting block and cooperates with the lifting block to slide back and forth with the slider in a horizontal straight line, and the guide groove includes an upper horizontal section and a lower horizontal section which are arranged up and down along the sliding direction of the slider, and also includes an ascending guide section which is arranged at one end of the lower horizontal section and inclined to the outside of the guide groove so that the lifting block gradually rises from the lower horizontal section to enter one end of the upper horizontal section when the slider slides horizontally and straightly, and a descending guide section which is arranged at the other end of the upper horizontal section so that the lifting block slides down from the upper horizontal section to enter the other end of the lower horizontal section, and a one-way passing structure which only allows the lifting block to rise along the ascending guide section and pass through in one direction to enter the upper horizontal section.

[0007] Furthermore, the one-way passage structure includes a return spring and a baffle plate arranged at the connection transition between the rising guide section and the upper horizontal section to control the opening and closing of the rising guide section. The baffle plate is hingedly arranged. During the process of the lifting block rising along the rising guide section, the lifting block pushes the baffle plate to rotate around the hinge point to open the rising guide section. The return spring is connected to the baffle plate to reverse and reset the baffle plate, thereby closing the rising guide section.

[0008] Furthermore, the driving device is a motor, and the motor is transmission-connected to the slider via a screw rod that cooperates with the slider.

[0009] Furthermore, the scraper is vertically slidably connected to the lifting block so as to be able to slide upward relative to the lifting block, and the lifting block is provided with an elastic member connected to the scraper to prevent the scraper from sliding upward.

[0010] Furthermore, a vertical guide rod is provided on the scraper, and the scraper is vertically slidably connected to the lifting block via the guide rod. The elastic member is a compressible spring, and the lower end of the spring abuts against the guide rod, and the upper end abuts against the lifting block.

[0011] Furthermore, the descending guide section is obliquely arranged at the other end of the upper horizontal section.

[0012] Furthermore, the descending guide section is arranged inwardly inclined at the other end of the upper horizontal section.

[0013] Furthermore, the lifting block is provided with a roller which rolls with the guide groove.

[0014] The beneficial effects of the present invention are as follows: since the tin scraping device of the present invention is provided with a zigzag structure guide groove 6 on one side of the lifting block 3, which slides with the lifting block 3 to guide the lifting block 3 to make a zigzag motion during the horizontal straight back and forth sliding of the slider 2, only one driving device 5 is needed to drive the slider to slide back and forth horizontally and straightly to make the scraper make a zigzag motion within the travel range, the structure of the device is simpler and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 is a stereogram of the present invention;

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

[0018] Figure 4 yes Figure 3 A magnified image of point A;

[0019] Figure 5 It is a schematic diagram of the installation structure of the scraper;

[0020] Shown in the figure: support 1, slider 2, lifting block 3, scraper 4, driving device 5, guide groove 6, slide 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, return spring 72, screw rod 8. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 4As shown, a tin scraping device of the present invention comprises a support 1, a slider 2, a driving device 5, a lifting block 3 and a scraper 4 for scraping tin scraping on the surface of tin liquid in a tin tank, wherein the slider 2 is horizontally and linearly slidably connected to the support 1 so as to be able to slide back and forth along a horizontal straight line direction, the lifting block 3 is vertically and 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 installed on the lifting block 3, and the driving device 5 is connected to the slider 2 to drive the slider 2 to slide horizontally and linearly. The device is also provided with a guide groove 6 of a circular structure arranged on one side of the lifting block 3 and slidably cooperated with the lifting block 3 to guide the lifting block 3 to make a circular motion during the horizontal straight back and forth sliding of the slider 2. The guide groove 6 includes an upper horizontal section 63 and a lower horizontal section 61 arranged up and down along the sliding direction of the slider 2, and also includes an ascending guide section 62 arranged 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 gradually rises from the lower horizontal section 61 to enter one end of the upper horizontal section 63 when sliding horizontally and straightly with the slider 2, and a descending guide section 64 arranged at the other end of the upper horizontal section 63 so that the lifting block 3 gradually slides down from the upper horizontal section 63 to enter the other end of the lower horizontal section 61. A one-way passing structure is provided at the connection transition between the ascending guide section 62 and the upper horizontal section 63, which only allows the lifting block 3 to ascend along the ascending guide section 62 and pass through it in one direction to enter the upper horizontal section 63. The descending guide section 64 can be arranged vertically or inclined. The lengths of the upper horizontal section 63 and the lower horizontal section 61 are set accordingly according to the distance of the tin sheet that needs to be scraped off by the scraper.

[0023] The rising guide section 62 is arranged at one end of the lower horizontal section 61 and is inclined toward the outside of the guide groove 6, that is, taking the vertical line 65 passing through the lower horizontal section 61 where the rising guide section 62 is arranged at one end as a reference, the rising guide section 62 is 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 the present invention, the slider 2 is connected to the support 1 in a horizontal linear sliding manner by sliding cooperation with a linear slide rail 21 horizontally arranged on its side; the lifting block 3 is connected to the slider 2 in a vertical sliding manner by sliding cooperation with a vertical guide column 31 fixed on the slider 2.

[0025] The following Figure 3The tin scraping device of the present invention is provided with a guide groove 6 of a circular structure on one side of the lifting block 3, which is slidably matched with the lifting block 3 to guide the lifting block 3 to make a circular motion when the slider 2 slides back and forth along the horizontal straight line. When the driving device 5 drives the slider 2 to slide back and forth along the horizontal straight line, when the slider 2 slides to the left along the horizontal straight line, the slider 2 drives the lifting block 3 to move to the left together. During the movement of the lifting block 3 to the left, the height of the lifting block 3 is controlled by sliding with the lower horizontal section 61 of the guide groove 6, so that the height of the lifting block 3 is maintained at a certain position, so that the scraper 4 installed thereon can scrape the tin; when the lifting block slides to the left end of the lower horizontal section 61, as the driving device 5 drives the slider 2 to slide back and forth along the horizontal straight line, the height of the lifting block 3 is controlled by sliding with the lower horizontal section 61 of the guide groove 6, so that the height of the lifting block 3 is maintained at a certain position, so as to facilitate the scraper 4 installed thereon to scrape the tin; Block 2 continues to slide forward, and the lifting block 3 gradually slides upward under the guidance of the rising guide section 62, so that the scraper 4 gradually leaves the tin liquid, until the lifting block 3 enters one end of the upper horizontal section 63 through the one-way passing structure and stops; then, the driving device 5 drives the slider 2 to slide horizontally and linearly to the right, and the slider 2 drives the lifting block 3 to move to the right together. At this time, the lifting block 3 slides along the upper horizontal section 63, and the lifting block 3 remains in the position where the scraper 4 leaves the tin liquid and moves to the right end of the upper horizontal section 63; finally, the lifting block 3 slides down under its own gravity and enters the right end of the lower horizontal section 61, so that the scraper returns to the original position and enters the tin liquid to a certain depth (the scraper generally extends 2 to 3 mm below the liquid surface). The tin scraping device of the present invention only needs a driving device 5 to drive the slider to slide horizontally and linearly back and forth to make the scraper do a circular motion within the travel range. The structure of the device is simpler and the cost is lower. The present invention is provided with a one-way passing structure, which can prevent the lifting block 3 from sliding down along the ascending guide 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 ascending guide section 62 is arranged obliquely outward at one end of the lower horizontal section, and the scraper leaves the tin liquid in a continuous forward movement. The scraper will not return the tin to the area where the tin has been removed in the process of leaving the tin liquid, which is more conducive to the scraper hanging and removing the tin in the travel area of ​​the lower horizontal section 61, and is more conducive to ensuring the quality of tinning of the product.

[0026] The driving device 5 may be a cylinder, a hydraulic cylinder or a motor, etc. In the embodiment of the present invention, the driving device 5 is a motor, and the motor is connected to the slider 2 through a screw rod 8 that cooperates with the slider 2. That is, the motor drives the slider 2 to slide back and forth along a horizontal straight line through the screw rod, and the slider 2 slides forward straightly when the motor rotates forward, and slides backward straightly when the motor rotates reversely.

[0027] like Figure 4As shown, in the embodiment of the present invention, the one-way passing structure includes a return spring 72 and a baffle 71 arranged 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 hingedly arranged. During the rising of the lifting block 3 along the rising guide section 62, the lifting block 3 pushes the baffle 71 to rotate around the hinge point to open the rising guide section 62. The return spring 72 is connected to the baffle 71 to push the baffle 71 to reverse and reset it after the lifting block passes, thereby closing the rising guide section 62. In the figure, the return spring 72 is a torsion spring. In some embodiments, the one-way passing structure is also only provided with a hinged baffle 71, and the baffle 71 automatically resets by its own gravity, but the reliability of this structure is relatively poor. In some embodiments, the one-way passage structure includes a plug plate and a reset spring. The plug plate is laterally inserted in the rising guide section 62 to control the opening and closing of the rising guide section 62. When the lifting block 3 rises along the rising guide section 62, the lifting block 3 cooperates with the plug plate to push the plug plate back to open the rising guide section 62, and the reset spring resets the plug plate and extends it to close the rising guide section 62 again.

[0028] The scraper can be fixedly mounted on the lifting block 3. Figure 5 As shown, in the implementation of the present invention, the scraper is installed in the following manner: the scraper 4 is vertically slidably connected to 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 member 42 connected to the scraper 4 to prevent the scraper 4 from sliding upward. This installation method allows the scraper to adaptively adjust its position in the up and down directions during the process of scraping off the tin. For example, when there is unmelted solid tin in the tin bath, the scraper encounters the solid tin, and the elastic member 42 is deformed and slides upward by the action of the solid tin, thereby bypassing the solid tin, which can avoid damage to the scraper and protect the scraper. The elastic member 42 can be a tension spring or a compression spring, and the elastic member serves to ensure the reset of the scraper.

[0029] In the embodiment of the present invention, a vertical guide rod 41 is provided on the scraper 4, and the guide rod 41 can be fixed on the scraper 4 by bolt connection, welding, etc. The scraper 4 is vertically slidably connected with the lifting block 3 through the guide rod 41, and the elastic member 42 is a compressible spring, and 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 section 64 is vertically arranged, the speed at which the lifting block 3 slides down the descending guide section 64 will be relatively large, and the scraper may easily cause the molten tin to splash when entering the molten tin. In order to reduce the speed at which the lifting block 3 slides down, preferably, the descending guide section 64 is inclined. Relative to the upper horizontal section 63, the inclination direction of the descending guide section 64 may be outward or inward. In the present invention, preferably, the descending guide section 64 is arranged inwardly and inclined at the other end of the upper horizontal section 63. The descending guide section 64 is arranged inwardly and inclined at the other end of the upper horizontal section 63, that is, taking the vertical line passing through one end of the upper horizontal section 63 where the descending guide section 64 is arranged as a reference, the descending guide section 64 is on the inner side of the vertical line (the side facing the center of the guide groove) and inclined inward. The inward inclination of the descending guide section 64 at the other end of the upper horizontal section 63 can better ensure that the lifting block 3 moves along the lower horizontal section 61 in a second timed manner. Specifically, as Figure 3 As shown, after the lifting block 3 enters the lower horizontal section 61 through the descending guide section 64, during the sliding of the slider to the left, the lifting block 3 will not be able to enter the descending guide section 64 and can only move to the left along the lower horizontal section 61, thereby better ensuring that the scraper scrapes off the tin.

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

Claims

1. A tin scraping device, characterized in that: The invention comprises a support (1), a slider (2), a driving device (5), a lifting block (3) and a scraper (4) for scraping off tin skin, wherein the slider (2) is horizontally and linearly connected to the support (1) so as to be able to slide back and forth along a horizontal linear direction, the lifting block (3) is vertically and linearly connected to the slider (2), the scraper (4) is mounted on the lifting block (3), and the driving device (5) is connected to the slider (2) so as to drive the slider (2) to slide horizontally and linearly; The device also includes a guide groove (6) of a circular structure arranged on one side of the lifting block (3) and slidably cooperated with the lifting block (3) to guide the lifting block (3) to make a circular motion in the process of sliding back and forth horizontally and linearly 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); and also includes a guide groove (6) arranged at one end of the lower horizontal section (61) and inclined toward the outside of the guide groove (6) so that the lifting block (3) slides horizontally and linearly with the slider (2). A rising guide section (62) is provided for gradually rising from the lower horizontal section (61) and entering one end of the upper horizontal section (63); and a descending guide section (64) is provided at the other end of the upper horizontal section (63) and allows the lifting block (3) to slide down from the upper horizontal section (63) and enter the other end of the lower horizontal section (61). A one-way passing structure is provided at the connection transition between the rising guide section (62) and the upper horizontal section (63) so as to only allow the lifting block (3) to rise along the rising guide section (62) and pass through in one direction to enter the upper horizontal section (63).

2. A tin scraping device as claimed in claim 1, characterized in that: The one-way passing structure comprises a return spring (72) and a baffle (71) arranged at a 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 hingedly arranged; when the lifting block (3) rises along the rising guide section (62), the lifting block (3) pushes the baffle (71) to rotate around a hinge point to open the rising guide section (62); the return spring (72) is connected to the baffle (71) to reverse and reset the baffle (71) to close the rising guide section (62).

3. A tin scraping device as claimed in claim 1, characterized in that: The driving device (5) is a motor, and the motor is transmission-connected to the slider (2) via a screw rod (8) that cooperates with the slider (2).

4. A tin scraping device as claimed in claim 1, characterized in that: The scraper (4) is vertically slidably connected to the lifting block (3) so as to be able to slide upward relative to the lifting block (3); the lifting block (3) is provided with an elastic member (42) connected to the scraper (4) to prevent the scraper (4) from sliding upward.

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

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

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

8. A tin scraping device as claimed in claim 1, characterized in that: The lifting block (3) is provided with a roller (32) which is in rolling cooperation with the guide groove (6).

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