Printing scraper

Abstract

The utility model provides a scraper which comprises a scraper body and a blocking piece. The scraper main body comprises a blade and a fixing piece; the blade is arranged on the fixing piece; the blocking piece is arranged on one side of the blade in the scraping direction, and the blocking piece is attached to the blade. The bottom, close to the tip of the blade, of the blocking piece is higher than the tip of the blade. The end, facing the tip of the blade, of the blocking piece is an arc face. The blocking piece is arranged on the side, in the scraping direction, of the blade, and the blocking piece is attached to the blade; meanwhile, the bottom of the blocking piece is an arc face higher than the knife point of the blade, so that in the process that the scraper body scrapes solder paste and other solder, the upward rolling height of the solder is reduced through the blocking piece on the wiping face of the blade, the circular rolling diameter of the solder is reduced, and therefore the solder falls back rapidly during printing, and the printing efficiency is improved. And continuous printing of the circuit board can be realized by adding a small amount of solder.

Description

Technical Field

[0001] The utility model relates to the technical field of surface mounting technology, in particular to a printing squeegee. Background Art

[0002] In the production process of circuit boards, it is necessary to solder the surface-mounted components by printing solder paste. Among them, circuit boards such as LED lamp boards and packaged chip substrates have few solder pads on their chip substrates, and the opening area of the stencil is also extremely small, and they are mainly applicable to stencils with small-area openings. Therefore, the amount of solder required for small-area opening stencils is less than that for large-area opening stencils. However, there is no special squeegee for the use of small stencil opening areas. When using the existing squeegees, it is necessary to increase the amount of solder paste during the production process to achieve continuous printing, resulting in a large amount of solder paste consumption. For example, in the actual production process, 500 g of solder paste needs to be added every day, but only 148 g is actually consumed, and the use cost is relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide a printing squeegee that can achieve continuous printing on the basis of adding a small amount of solder.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A printing squeegee includes a squeegee body and a baffle; the squeegee body includes a blade; the baffle is arranged on one side of the blade along the scraping direction, and the baffle is attached to the blade; the height of the bottom of the baffle near the tip of the blade is higher than the height of the tip of the blade; one end of the baffle facing the tip of the blade is an arc surface.

[0006] Further, a magnetic core is arranged in the squeegee body; the baffle is a magnetic baffle; the blade is arranged between the magnetic core and the magnetic baffle.

[0007] Further, the squeegee body further includes a fixing member; the blade is detachably connected to the fixing member.

[0008] Further, the fixing member is provided with a chute; the blade is provided with a sliding portion; the sliding portion of the blade is slidably connected to the chute of the fixing member.

[0009] Further, it further includes two sets of solder blocking blocks; the two sets of solder blocking blocks are respectively arranged at both ends of the axial direction of the squeegee body, and the solder blocking blocks are detachably connected to the squeegee body; the blade is arranged between the two sets of solder blocking blocks.

[0010] Further, a card slot is arranged on the squeegee body; a buckle is arranged on the solder blocking block; the buckle of the solder blocking block is snap-fitted with the card slot of the squeegee body.

[0011] Further, at least two groups of the card slots are arranged on the blade body; the two groups of card slots are respectively on different sides of the blade body; at least two groups of the buckles are arranged on the solder blocking block, and the buckles respectively correspond to the card slots one by one.

[0012] Further, it further includes a mounting member; the first side of the mounting member is detachably connected to the blade body; the second side of the mounting member away from the blade body is used for connecting to a printing device.

[0013] Further, a sliding block is arranged on the first side of the mounting member; the sliding block of the mounting member is slidably connected to the sliding groove of the blade body.

[0014] Further, a mounting nut and a mounting screw are arranged on the second side of the mounting member.

[0015] The beneficial effect of the present utility model is that: by arranging a baffle on one side of the blade along the scraping direction, and the baffle is attached to the blade; at the same time, the bottom of the baffle is an arc surface with a height higher than the height of the tip of the blade, so that during the process of scraping solder paste and other solders through the blade body, the upward rolling height of the solder is depressed by the baffle on the wiping surface of the blade, and the circular rolling diameter of the solder is reduced, so that the solder can quickly fall back during printing, and thus a small amount of solder can be added to achieve continuous printing of the circuit board. Description of the Drawings

[0016] Figure 1 It is a side view of a printing blade in an embodiment of the present utility model;

[0017] Figure 2 It is an exploded view of a printing blade in an embodiment of the present utility model;

[0018] Figure 3 It is a side view of the overall structure of a printing blade in an embodiment of the present utility model;

[0019] Figure 4 It is another side view of a printing blade in an embodiment of the present utility model;

[0020] Label Description:

[0021] 1. Blade body; 11. Blade; 111. Sliding part;

[0022] 12. Magnetic core; 13. Fixing member; 131. Sliding groove; 14. Card slot;

[0023] 2. Baffle; 3. Solder blocking block; 31. Buckle;

[0024] 4. Mounting member; 41. Sliding block; 42. Mounting nut; 43. Mounting screw. Detailed implementation manners

[0025] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the implementation manners and with reference to the drawings.

[0026] Please refer to Figure 1 , a printing squeegee, comprising a squeegee body and a baffle; the squeegee body includes a blade; the baffle is disposed on one side of the blade along the scraping direction, and the baffle is in contact with the blade; the height of the bottom of the baffle near the tip of the blade is higher than the height of the tip of the blade; one end of the baffle facing the tip of the blade is an arc surface.

[0027] As can be seen from the above description, the beneficial effects of the present utility model are as follows: by providing a baffle on one side of the blade along the scraping direction, and the baffle is in contact with the blade; at the same time, the bottom of the baffle is an arc surface and its height is higher than the height of the tip of the blade, so that during the process of scraping solder such as solder paste by the squeegee body, the upward rolling height of the solder is depressed by the baffle on the wiping surface of the blade, and the circular rolling diameter of the solder is reduced, so that the solder can quickly fall back during printing, and continuous printing of the circuit board can be achieved by adding a small amount of solder.

[0028] Further, a magnetic core is provided inside the squeegee body; the baffle is a magnetic baffle; the blade is disposed between the magnetic core and the magnetic baffle.

[0029] As can be seen from the above description, by providing a magnetic core inside the squeegee body and using a magnetic baffle, the baffle can be connected to the squeegee body by magnetic force; at the same time, by disposing the blade between the magnetic core and the magnetic baffle, the magnetic core and the magnetic baffle can also clamp the blade to improve the stability of the blade.

[0030] Further, the squeegee body further includes a fixing member; the blade is detachably connected to the fixing member.

[0031] As can be seen from the above description, the squeegee body is composed of a blade and a fixing member that are detachably connected, so that the blade can be replaced according to different usage requirements to meet the circuit board printing requirements in different scenarios.

[0032] Further, the fixing member is provided with a sliding groove; the blade is provided with a sliding portion; the sliding portion of the blade is slidably connected to the sliding groove of the fixing member.

[0033] As can be seen from the above description, by providing a sliding groove on the fixing member and a sliding movement on the blade, and through the cooperation of the sliding groove and the sliding portion of the blade, the detachable connection between the blade and the fixing member is realized.

[0034] Further, it further includes two groups of solder blocking blocks; the two groups of solder blocking blocks are respectively arranged at both ends of the axial direction of the blade body, and the solder blocking blocks are detachably connected to the blade body; the blade is arranged between the two groups of solder blocking blocks.

[0035] As can be seen from the above description, by respectively arranging a group of solder blocking blocks at both ends of the axial direction of the blade body, and the blade is arranged between the two groups of solder blocking blocks, the solder is restricted within the scraping range of the blade by the two groups of solder blocking blocks, playing a role in blocking the solder; at the same time, the two groups of solder blocking blocks also play a role in fixing the blade, preventing the blade from moving in the axial direction.

[0036] Further, a clamping groove is arranged on the blade body; a clamping buckle is arranged on the solder blocking block; the clamping buckle of the solder blocking block is clamped with the clamping groove of the blade body.

[0037] As can be seen from the above description, by arranging a clamping groove on the blade body and a clamping buckle on the solder blocking block, the solder blocking block and the blade body are detachably connected through the clamping buckle and the clamping groove.

[0038] Further, at least two groups of the clamping grooves are arranged on the blade body; the two groups of clamping grooves are respectively on different sides of the blade body; at least two groups of the clamping buckles are arranged on the solder blocking block, and the clamping buckles respectively correspond to the clamping grooves one by one.

[0039] As can be seen from the above description, by arranging clamping grooves on different sides of the blade body and arranging corresponding numbers of clamping buckles on the solder blocking block, the connection stability between the solder blocking block and the blade body is improved.

[0040] Further, it further includes a mounting member; the first side of the mounting member is detachably connected to the blade body; the second side of the mounting member away from the blade body is used for connecting to a printing device.

[0041] As can be seen from the above description, by arranging a mounting member to connect the blade body to the printing device, it can avoid damage to the blade body caused by the connection between the blade body and the printing device; at the same time, the mounting member is detachably connected to the blade body, simplifying the assembly process.

[0042] Further, a slider is arranged on the first side of the mounting member; the slider of the mounting member is slidably connected to the sliding groove of the blade body.

[0043] As can be seen from the above description, by arranging a slider on the mounting member, a stable detachable connection is realized through the slider of the mounting member and the sliding groove of the blade body; at the same time, the solder blocking blocks at both ends of the blade body can also play a role in fixing the blade body, improving the connection stability.

[0044] Further, a mounting nut and a mounting screw are arranged on the second side of the mounting member.

[0045] As can be seen from the above description, by providing an installation nut and an installation screw on the installation part, the connection between the installation part and the printing device is realized.

[0046] The printing squeegee provided by the present utility model can be applied to the scenarios of solder paste or red glue printing in surface mounting, which will be described below through specific embodiments:

[0047] Embodiment 1

[0048] Please refer to Figure 1 , a printing squeegee, including a squeegee body 1 and a baffle 2; the squeegee body 1 includes a blade 11 and a fixing member 13; the blade 11 is arranged on the fixing member 13; the baffle 2 is arranged on one side of the blade 11 along the scraping direction, and the baffle 2 is attached to the blade 11; the height of the bottom of the baffle 2 near the tip of the blade 11 is higher than the height of the tip of the blade 11; one end of the baffle 2 facing the tip of the blade 11 is an arc surface. Among them, in an optional embodiment, a magnetic core 12 is further arranged in the squeegee body 1; the baffle 2 is a magnetic baffle 2; the blade 11 is arranged between the magnetic core 12 and the magnetic baffle 2. By adding the baffle 2 on the scraping surface of the squeegee, the upward rolling height of the solder paste can be reduced, the circular rolling diameter of the solder paste can be reduced, and the solder paste can quickly fall back during printing, so that continuous printing can be achieved by adding a small amount of solder paste, solving the problem that more than 200g of solder paste is required for continuous printing on a small-area opening stencil, but it cannot be used up within the validity period of the solder paste and causes waste, thereby saving the use cost of the solder paste and increasing the convenience of maintenance.

[0049] Please refer to Figure 2 and Figure 3 , further including an installation part 4 and two groups of solder blocking blocks 3; the first side of the installation part 4 is detachably connected to the squeegee body 1; the second side of the installation part 4 away from the squeegee body 1 is used to be connected to the printing device; specifically, a slider 41 is arranged on the first side of the installation part 4; the slider 41 of the installation part 4 is slidably connected to the chute 131 of the squeegee body 1; at the same time, an installation nut 42 and an installation screw 43 are arranged on the second side of the installation part 4, and the connection with the printing device is realized through the installation nut 42 and the installation screw 43.

[0050] The two sets of the solder-blocking blocks 3 are respectively arranged at both ends of the scraper body 1 in the axial direction, and the solder-blocking blocks 3 are detachably connected to the scraper body 1; the blade 11 is arranged between the two sets of the solder-blocking blocks 3; specifically: a clamping groove 14 is arranged on the scraper body 1; a clamping buckle 31 is arranged on the solder-blocking block 3; the clamping buckle 31 of the solder-blocking block 3 is clamped with the clamping groove 14 of the scraper body 1; wherein, at least two sets of the clamping grooves 14 are arranged on the scraper body 1; the two sets of the clamping grooves 14 are respectively on different sides of the scraper body 1; at least two sets of the clamping buckles 31 are arranged on the solder-blocking block 3, and the clamping buckles 31 respectively correspond to the clamping grooves 14 one by one.

[0051] As Figure 3 shown, two sets of the clamping grooves 14 are arranged on the scraper body 1; one set of the clamping grooves 14 is arranged on the top of the fixing member 13, and the other set of the clamping grooves 14 is arranged on the side of the fixing member 13; two sets of the clamping buckles 31 are also correspondingly arranged on the solder-blocking block 3, one set is on the top and the other set is on the side, so as to correspond to the clamping grooves 14 one by one.

[0052] Among them, the existing printing scraper usually adopts screw installation, and its disassembly steps are as follows: 1. Disassemble 8 fixing scraper screws, and then remove the two screws for blocking solder paste on both sides; 2. Only after the screws are disassembled can the blade 11 be taken down; 3. Only after the scraper is disassembled can maintenance cleaning be carried out.

[0053] However, the disassembly steps of the improved printing scraper in this embodiment are as follows: 1. Disassemble the solder-blocking blocks 3 on both sides; 2. After disassembly, directly draw out the blade 11 and the retaining piece 2 from the side; 3. Only after the blade 11 is disassembled can maintenance cleaning be carried out. The retaining piece 2 is fixed by a magnetic attraction method, which is more convenient for the installation, disassembly and cleaning of the scraper body 1 and the retaining piece 2.

[0054] Please refer to Figure 4 , in another optional embodiment, the blade 11 is detachably connected to the fixing member 13, specifically: the fixing member 13 is provided with a sliding groove 131; the blade 11 is provided with a sliding part 111; the sliding part 111 of the blade 11 is slidably connected to the sliding groove 131 of the fixing member 13. The scraper body 1 is composed of the blade 11 and the fixing member 13 which are detachably connected, so that the blade 11 can be replaced according to different use requirements to meet the circuit board printing requirements in different scenarios; at the same time, it is also convenient to clean the blade 11.

[0055] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A printing scraper, characterized in that: It includes a scraper body and a baffle; The scraper body includes a blade; The baffle is arranged on one side of the blade along the scraping direction, and the baffle is in contact with the blade; The height of the bottom of the baffle close to the blade tip is higher than the height of the blade tip; One end of the blocking piece facing the blade tip is a curved surface.

2. A printing scraper according to claim 1, characterized in that: A magnetic core is arranged in the scraper body; The baffle is a magnetic baffle; The blade is arranged between the magnetic core and the magnetic baffle.

3. A printing scraper according to claim 1, characterized in that: The scraper body also includes a fixing member; The blade is detachably connected to the fixing member.

4. A printing scraper according to claim 3, characterized in that: The fixing member is provided with a slide groove; The blade is provided with a sliding portion; The sliding portion of the blade is slidably connected to the sliding groove of the fixing member.

5. A printing scraper according to claim 1, characterized in that: Also included are two sets of tin stoppers; Two groups of tin-blocking blocks are respectively arranged at two ends of the scraper body in the axial direction, and the tin-blocking blocks are detachably connected to the scraper body; The blade is arranged between two groups of tin-blocking blocks.

6. A printing scraper according to claim 5, characterized in that: The scraper body is provided with a card slot; The tin blocking block is provided with a buckle; The buckle of the tin blocking block is engaged with the slot of the scraper body.

7. A printing scraper according to claim 6, characterized in that: At least two groups of the slots are provided on the scraper body; The two groups of slots are respectively located on different sides of the scraper body; At least two groups of buckles are arranged on the tin blocking block, and the buckles correspond to the clamping slots one by one.

8. A printing scraper according to claim 1, characterized in that: Also includes mounting parts; The first side of the mounting member is detachably connected to the scraper body; The mounting member is away from the second side of the scraper body and is used for connecting with a printing device.

9. A printing scraper according to claim 8, characterized in that: A sliding block is provided on the first side of the mounting member; The sliding block of the mounting member is slidably connected to the sliding groove of the scraper body.

10. A printing scraper according to claim 8, characterized in that: A mounting nut and a mounting screw are provided on the second side of the mounting member.

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