FPC magnetic tool for SMT production

Abstract

The utility model relates to the technical field of circuit board processing, and particularly provides an FPC magnetic tool for SMT production, which comprises a base, a magnetic carrier is matched on the base, and a magnetic steel sheet is magnetically matched on the magnetic carrier; the FPC board is provided with a through hole, the magnetic carrier is provided with a positioning hole, the base is provided with a positioning column, and the through hole and the positioning hole which are communicated in a matched mode are connected with the positioning column in a sleeved mode at the same time so as to position the placing position of the FPC board relative to the magnetic carrier. A groove is formed in the upper end of the magnetic carrier, a convex block is arranged at the lower end of the magnetic steel sheet, and the magnetic steel sheet magnetically matched with the magnetic carrier is embedded into the groove through the convex block; according to the utility model, the base provided with the positioning columns is adopted to position the FPC board relative to the magnetic carrier, and horizontal movement limiting is carried out through the cooperation of the grooves and the convex blocks, so that the positioning effect of the FPC board is improved; and through the arrangement of the rectangular frame structure magnetic steel sheet, circumferential positioning can be formed on the FPC board, Mark points are prevented from being shielded, and the fixing effect of the FPC board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to an FPC magnetic tooling for SMT production. Background Art

[0002] With the development of China's electronic technology, more and more electronic devices are widely used, which also makes FPC (Flexible Printed Circuit) technology mature. In the SMT patch production process of FPC (flexible circuit board), printing solder paste is a necessary process.

[0003] The published Chinese patent, with publication number CN220545222U, discloses a double-sided magnetic tooling fixture for an FPC board, including a base, a magnetic fixing plate, a first fixing plate and a second fixing plate. The base is provided with fixing parts at the four corners, and the four fixing parts define an accommodating space; the base is provided with a positioning column, and the magnetic fixing plate is provided with a positioning hole that cooperates with the positioning column.

[0004] The magnetic fixture used in the above patent has the following shortcomings:

[0005] 1. The base, magnetic fixing plate and fixing plate of the positioning column need to be put into the printing process together with the FPC board. The overall thickness is large and it is easy to be stuck in the SMT machine and cannot be used;

[0006] 2. Since FPC is a flexible circuit board, the fixing plate can only partially fix the FPC board, and the fixing effect is not good; and there are generally Mark points in the printed avoidance area at the upper end of the FPC board, which the SMT machine can recognize. The fixing plate is easy to block part of the Mark points when fixing the FPC board. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an FPC magnetic tooling for SMT production, which is used to solve the problems of large overall thickness and poor local fixing effect of the magnetic tooling fixture used in the prior art.

[0008] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an FPC magnetic tooling for SMT production, including a base, the base is equipped with a detachable magnetic carrier, and the FPC board is placed on the magnetic carrier; the magnetic carrier is magnetically equipped with a magnetic steel sheet for fixing the placement position of the FPC board;

[0009] The FPC board is provided with a through hole, the magnetic carrier is provided with a positioning hole corresponding to the through hole, and the base is provided with a positioning column, which is matched with the through hole and the positioning hole and is simultaneously sleeved with the positioning column to locate the placement position of the FPC board relative to the magnetic carrier;

[0010] The upper end of the magnetic carrier is provided with a groove, and the lower end of the magnetic steel sheet is provided with a protrusion. The magnetic steel sheet of the magnetic carrier is embedded in the groove through the protrusion to limit the horizontal movement of the magnetic steel sheet relative to the magnetic carrier.

[0011] In one embodiment of the present invention, the magnetic steel sheet is configured as a rectangular frame structure, which is used to circumferentially press the edge of the FPC board to avoid the mark point of the FPC board.

[0012] In one embodiment of the present invention, the base is configured as an H-shaped structure with wider upper and lower regions and a narrower middle region, and the length of the middle region of the base is smaller than the length of the magnetic carrier.

[0013] In one embodiment of the present invention, at least two positioning posts are provided, and the two positioning posts cooperate to position the placement position of the magnetic carrier and the stacking position of the FPC board relative to the magnetic carrier at least from opposite sides.

[0014] In one embodiment of the present invention, a plurality of high temperature resistant magnets are disposed on the magnetic carrier, and the plurality of high temperature resistant magnets are evenly distributed along the circumference of the edge of the magnetic steel sheet.

[0015] In one embodiment of the present invention, at least four grooves are provided on the magnetic carrier, and the number of the protrusions provided on the magnetic steel sheet is the same as the number of the grooves and the relative position distribution corresponds one to one.

[0016] As described above, the FPC magnetic tooling for SMT production of the utility model has the following beneficial effects:

[0017] 1. By setting a base and arranging a positioning column on the base, the FPC board can be reliably positioned relative to the magnetic carrier through the positioning column; by setting the grooves and protrusions used in conjunction, the FPC board is pressed by the magnetic steel sheet on the magnetic carrier after being placed, and the protrusion is embedded in the groove to form a horizontal movable limit; the base with the positioning column does not need to enter the printing process, which can effectively reduce the thickness of the FPC magnetic tooling entering the printing process, and avoid the problem that the SMT machine cannot be used due to the excessive thickness of the FPC magnetic tooling; at the same time, the base with the positioning column can be reused, effectively saving the tooling production cost;

[0018] 2. By setting the magnetic steel sheet as a rectangular frame structure, the rectangular frame structure magnetic steel sheet can form circumferential positioning for the FPC, thereby improving the fixing effect of the FPC board; at the same time, the rectangular frame structure magnetic steel sheet can avoid blocking the Mark point, thereby improving the optical positioning and recognition effect of the SMT machine for the FPC board, thereby improving the printing effect of the FPC board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the general assembly structure of the utility model.

[0020] Figure 2 Display as Figure 1 Schematic diagram of the enlarged structure of the middle base.

[0021] Figure 3 Display as Figure 1 Schematic diagram of the enlarged structure of the magnetic carrier.

[0022] Figure 4 Display as Figure 1 Schematic diagram of the enlarged structure of the magnetic steel sheet.

[0023] Figure 5 Display as Figure 1 Schematic diagram of the enlarged structure of the FPC board.

[0024] Component number description

[0025] Base 1; positioning column 11; magnetic carrier 2; positioning hole 21; groove 22; magnetic steel sheet 3; bump 31; FPC board 4; through hole 41; mark point 42; high temperature resistant magnet 5. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] See also Figures 1 to 5It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0028] See also Figure 1-5 The utility model provides an FPC magnetic tooling for SMT production, including a base 1, on which a detachable magnetic carrier 2 is matched, and an FPC board 4 is placed on the magnetic carrier 2; the magnetic carrier 2 is magnetically matched with a magnetic steel sheet 3 for fixing the placement position of the FPC board 4; specifically, a through hole 41 is provided on the FPC board 4, and a positioning hole 21 corresponding to the through through hole 41 is provided on the magnetic carrier 2, and a positioning column 11 is provided on the base 1, which is matched with the through through hole 41 and the positioning hole 21 and simultaneously sleeved with the positioning column 11 to locate the placement position of the FPC board 4 relative to the magnetic carrier 2; a groove 22 is provided at the upper end of the magnetic carrier 2, and a protrusion 31 is provided at the lower end of the magnetic steel sheet 3, and the magnetic steel sheet 3 magnetically matched with the magnetic carrier 2 is embedded in the groove 22 through the protrusion 31 to limit the horizontal movement of the magnetic steel sheet 3 relative to the magnetic carrier 2. The base 1 provided with the positioning column 11 can reliably position the FPC board 4 relative to the magnetic carrier 2. After the FPC board 4 is placed, it is magnetically matched with the magnetic steel sheet 3 on the magnetic carrier 2 to be pressed, and the protrusion 31 is embedded in the groove 22 to form a horizontal movable limit. The base 1 provided with the positioning column 11 does not need to enter the printing process, and can effectively reduce the thickness of the FPC magnetic tooling entering the printing process, thereby avoiding the problem that the SMT machine cannot be used due to the excessive thickness of the FPC magnetic tooling. At the same time, the base 1 provided with the positioning column 11 can be reused, effectively saving the tooling manufacturing cost.

[0029] The magnetic steel sheet 3 is configured as a rectangular frame structure, and a plurality of high temperature resistant magnets 5 are disposed on the magnetic carrier 2, and the plurality of high temperature resistant magnets 5 are evenly distributed circumferentially along the edge of the magnetic steel sheet 3; the magnetic steel sheet 3 with a rectangular frame structure can circumferentially press the edge of the FPC board 4, thereby forming a circumferential positioning for the FPC board 4 and improving the fixing effect of the FPC board 4; at the same time, the magnetic steel sheet 3 with a rectangular frame structure can avoid blocking the Mark point 42, thereby improving the optical positioning and recognition effect of the SMT machine on the FPC board 4, and thereby improving the printing effect on the FPC board 4.

[0030] The base 1 is configured as an H-shaped structure with wider upper and lower regions and a narrower middle region. The length of the middle region of the base 1 is smaller than the length of the magnetic carrier 2, so as to facilitate the placement of the magnetic carrier 2. At least two positioning posts 11 are provided, and the two positioning posts 11 cooperate to position the placement position of the magnetic carrier 2 and the stacking position of the FPC board 4 relative to the magnetic carrier 2 from at least two opposite sides, so as to effectively improve the placement effect of the FPC board 4 relative to the magnetic carrier 2.

[0031] At least four grooves 22 are provided on the magnetic carrier 2, and the number of protrusions 31 provided on the magnetic steel sheet 3 is the same as the number of grooves 22 and the relative position distribution corresponds one to one; the coordinated use of multiple grooves 22 and protrusions 31 can improve the horizontal activity limiting effect of the magnetic steel sheet 3 relative to the magnetic carrier 2.

[0032] In summary, the FPC magnetic tooling for SMT production provided by the utility model adopts a base 1 with a positioning column 11 to position the FPC board 4 relative to the magnetic carrier 2, and uses the groove 22 and the protrusion 31 used in conjunction to limit the horizontal movement, thereby improving the positioning effect of the FPC board 4, and the base 1 with the positioning column 11 does not need to enter the printing process and can be reused; the setting of the rectangular frame structure magnetic steel sheet 3 can form circumferential positioning for the FPC board and avoid blocking the mark point 42, further improving the fixing effect of the FPC board 4; the utility model can efficiently complete the precise positioning operation of the FPC board 4, and provide a guarantee for the process requirements of precise positioning for the subsequent process. Therefore, the utility model effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A FPC magnetic tooling for SMT production, characterized by: The invention comprises a base (1), wherein a detachable magnetic carrier (2) is matched on the base (1), and an FPC board (4) is placed on the magnetic carrier (2); and a magnetic steel sheet (3) is magnetically matched on the magnetic carrier (2) for fixing the placement position of the FPC board (4); The FPC board (4) is provided with a through hole (41), the magnetic carrier (2) is provided with a positioning hole (21) corresponding to the through hole (41), and the base (1) is provided with a positioning column (11), and the positioning column (11) is simultaneously sleeved with the through hole (41) and the positioning hole (21) to locate the placement position of the FPC board (4) relative to the magnetic carrier (2); The upper end of the magnetic carrier (2) is provided with a groove (22), and the lower end of the magnetic steel sheet (3) is provided with a protrusion (31). The magnetic steel sheet (3) of the magnetically matched magnetic carrier (2) is embedded in the groove (22) through the protrusion (31) to limit the horizontal movement of the magnetic steel sheet (3) relative to the magnetic carrier (2).

2. The FPC magnetic tooling for SMT production according to claim 1, characterized in that: The magnetic steel sheet (3) is configured as a rectangular frame structure and is used to circumferentially press the edge of the FPC board (4) to avoid the mark point of the FPC board (4).

3. The FPC magnetic tooling for SMT production according to claim 1, characterized in that: The base (1) is configured as an H-shaped structure with wider upper and lower regions and a narrower middle region, and the length of the middle region of the base (1) is smaller than the length of the magnetic carrier (2).

4. The FPC magnetic tooling for SMT production according to claim 1, characterized in that: At least two positioning posts (11) are provided, and the two positioning posts (11) cooperate to position the placement position of the magnetic carrier (2) and the stacking position of the FPC board (4) relative to the magnetic carrier (2) at least from opposite sides.

5. The FPC magnetic tooling for SMT production according to claim 1, characterized in that: The magnetic carrier (2) is provided with a plurality of high temperature resistant magnets (5), and the plurality of high temperature resistant magnets (5) are evenly distributed along the circumference of the edge of the magnetic steel sheet.

6. The FPC magnetic tooling for SMT production according to claim 1, characterized in that: At least four grooves (22) are provided on the magnetic carrier (2), and the number of the protrusions (31) provided on the magnetic steel sheet (3) is the same as the number of the grooves (22), and the relative position distribution is one-to-one corresponding.

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