Solder paste printing steel sheet fixed without adhesive tape

Abstract

The utility model belongs to the technical field of PCB (printed circuit board) production, and discloses a solder paste printing steel sheet without adhesive tape fixation, which comprises a steel sheet, the bottom of the steel sheet is provided with a flat operation end face, two side support plates are welded and mounted at the top of the steel sheet, the two side support plates are symmetrically arranged, a rear support plate is welded and mounted at the top of the steel sheet, and the rear support plate is provided with an adhesive tape. The rear supporting plate is connected with the joints of the two side supporting plates in a welding manner; a transverse plate is welded to the sides, away from the steel sheet, of the side supporting plates and the rear supporting plate, a hand screw is arranged in the transverse plate, a grip is arranged on the outer surface of the hand screw and installed on the transverse plate through the hand screw, and the operation end face is formed by polishing through the polishing technology. A plurality of receding holes are formed in the top end of the steel sheet and distributed at equal intervals in the length / width direction of the steel sheet, and the side supporting plate is of an inverted-L-shaped structure with a vertical installation part and a horizontal installation part. According to the utility model, solder paste printing can be conveniently carried out on the PCB, no adhesive tape is needed for fixation, and rapid demolding can be realized at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PCB production, especially to a solder paste printing steel sheet without adhesive tape fixation. BACKGROUND

[0002] The solder paste printing steel sheet is a production process used in the surface mount technology (SMT) production line, which mainly serves to make the welding points of electronic components on the PCB substrate.

[0003] Currently, Nadcap audit requires no excess material on the printed board to be reworked. The existing solution is to stick high-temperature adhesive tape around the steel sheet to make the printed board and the steel sheet adhere, and then print the solder paste. However, the inventor found that it takes time to stick the high-temperature adhesive tape, and the labor cost is high. If there are devices near the printed board to be reworked, it is difficult to operate, which affects the delivery schedule of subsequent products. Therefore, the inventor proposes a solder paste printing steel sheet without adhesive tape fixation. SUMMARY

[0004] In order to overcome the defects of the prior art as mentioned above, the inventor has conducted in-depth research and, after a lot of creative labor, completed the present utility model.

[0005] Specifically, the technical problem to be solved by the present utility model is to provide a solder paste printing steel sheet without adhesive tape fixation to solve the technical problem that it takes time to stick high-temperature adhesive tape, the labor cost is high, and if there are devices near the printed board to be reworked, it is difficult to operate, which affects the delivery schedule of subsequent products.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions:

[0007] A solder paste printing steel sheet without adhesive tape fixation, comprising a steel sheet, the bottom of the steel sheet having a flat work end face, the top of the steel sheet being welded to install two side support plates, the two side support plates being symmetrically arranged, the top of the steel sheet being welded to install a rear support plate, the rear support plate being welded to connect with the junction of the two side support plates.

[0008] The side support plates and the rear support plate are welded to install a horizontal plate on the side away from the steel sheet, the inside of the horizontal plate being provided with a hand screw, the outer surface of the hand screw being provided with a handle, the handle being installed on the horizontal plate through the hand screw.

[0009] As an improved technical solution, the work end face is polished by a polishing process;

[0010] The top end of the steel sheet is internally provided with a plurality of accommodation holes, the plurality of accommodation holes being equidistantly arranged along the length / width direction of the steel sheet.

[0011] As an improved technical solution, the side support plate has an inverted L-shaped structure of a vertical mounting portion and a horizontal mounting portion, and the horizontal mounting portion is provided with an inclined rib.

[0012] As an improved technical solution, a lower edge is formed between the top of the steel sheet, the side support plate and the rear support plate, an upper edge is formed between the bottom of the horizontal plate, the side support plate and the rear support plate, and a plurality of side support ribs and rear support ribs are arranged between the lower edge and the upper edge.

[0013] As an improved technical solution, a plurality of side support ribs are arranged on the top of the steel sheet, the outer surface of the side support plate and the bottom of the horizontal plate, and the plurality of side support ribs are equidistantly arranged along the length / width direction of the steel sheet.

[0014] As an improved technical solution, a plurality of rear support ribs are arranged on the top of the steel sheet, the outer surface of the rear support plate and the bottom of the horizontal plate, and the plurality of rear support ribs are equidistantly arranged along the length / width direction of the steel sheet.

[0015] As an improved technical solution, a through hole is arranged in the inner top end of the horizontal plate and is connected with a screw of the hand screw.

[0016] As an improved technical solution, a threaded hole corresponding to the hand screw is arranged at one end of the handle, and the inner cavity of the threaded hole is threadedly connected with the hand screw.

[0017] After the above technical solution is adopted, the beneficial effects of the present application are as follows:

[0018] 1. In the present application, the handle is installed on the horizontal plate by using the hand screw, at this time, the hand screw is screwed through the through hole and into the threaded hole until the handle is fixed on the horizontal plate, then the operator can press the handle when printing, at this time, only the working end surface of the steel sheet contacts the surface of the PCB, without occupying more area of the surface of the PCB, and the steel sheet is tightly attached to the PCB to ensure that there is no gap between the steel sheet and the PCB, and the steel sheet does not move with the scraper when printing the solder paste, after printing is completed, the operator can hold the handle to lift the steel sheet to realize the effect of rapid demolding, thereby facilitating the solder paste printing of the PCB, without the need for adhesive tape fixation, and rapid demolding can be realized.

[0019] 2. In the present application, the side support plate, the inclined rib, the side support rib, the rear support plate and the rear support rib are arranged on the top of the steel sheet, which plays a role of vertical support during the operation of the steel sheet for solder paste printing, thereby facilitating the protection of the steel sheet from deformation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The whole structure schematic diagram of the tin paste printed steel sheet without the need of adhesive tape fixation of the present application.

[0022] Figure 2 The whole structure explosion structure schematic diagram of the tin paste printed steel sheet without the need of adhesive tape fixation of the present application.

[0023] Figure 3 The structure schematic diagram of removing the hand screw and the handle in the whole structure of the tin paste printed steel sheet without the need of adhesive tape fixation of the present application.

[0024] The figure mark explanation:

[0025] In the figure: 1, steel sheet; 101, let go of the hole; 2, side support plate; 201, inclined rib; 202, side support rib; 3, back support plate; 301, back support rib; 4, horizontal plate; 401, through hole; 5, hand screw; 6, handle; 601, screw hole. Specific implementation

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" in the whole text is that three schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0029] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0030] Referring to Figure 1 -3, a tin paste printing steel sheet without adhesive tape is provided, the tin paste printing steel sheet without adhesive tape comprises a steel sheet 1, the bottom of the steel sheet 1 has a flat work end face, two side support plates 2 are welded and arranged on the top of the steel sheet 1, the two side support plates 2 are symmetrically arranged, a rear support plate 3 is welded and arranged on the top of the steel sheet 1, and the rear support plate 3 is welded and connected with the joint of the two side support plates 2.

[0031] The side support plate 2 and the rear support plate 3 are welded and arranged with a horizontal plate 4 away from the steel sheet 1, the horizontal plate 4 is internally provided with a hand screw 5, the outer surface of the hand screw 5 is provided with a handle 6, and the handle 6 is arranged on the horizontal plate 4 through the hand screw 5.

[0032] Referring to Figure 1 , the work end face is polished by a polishing process;

[0033] A plurality of accommodation holes 101 are arranged on the top of the steel sheet 1, and the plurality of accommodation holes 101 are equidistantly arranged along the length / width direction of the steel sheet 1.

[0034] Referring to Figure 2 and Figure 3 , the side support plate 2 has an inverted L-shaped structure with a vertical mounting portion and a horizontal mounting portion, and the vertical mounting portion and the horizontal mounting portion are provided with inclined ribs 201.

[0035] Referring to Figure 2 and Figure 3 , the top of the steel sheet 1, the side support plate 2 and the rear support plate 3 form a lower edge, the bottom of the horizontal plate 4, the side support plate 2 and the rear support plate 3 form an upper edge, and a plurality of side support ribs 202 and rear support ribs 301 are arranged between the lower edge and the upper edge.

[0036] The plurality of side support ribs 202 are arranged on the top of the steel sheet 1, the outer surface of the side support plate 2 and the bottom of the horizontal plate 4, and the plurality of side support ribs 202 are equidistantly arranged along the length / width direction of the steel sheet 1.

[0037] A plurality of rear support ribs 301 are installed on the top of the steel sheet 1, the outer surface of the rear support plate 3 and the bottom of the horizontal plate 4, and the plurality of rear support ribs 301 are arranged equidistantly along the length / width direction of the steel sheet 1.

[0038] With reference to Figure 2 and Figure 3 , the top end of the horizontal plate 4 is internally provided with a through hole 401 which is connected with the screw on the hand screw 5.

[0039] With reference to Figure 2 and Figure 3 , one end of the handle 6 is provided with a threaded hole 601 corresponding to the hand screw 5, and the inner cavity of the threaded hole 601 is threadedly connected with the hand screw 5.

[0040] In actual use, the handle 6 is installed on the horizontal plate 4 by using the hand screw 5, at this time the hand screw 5 is screwed through the through hole 401 and screwed into the threaded hole 601 until the handle 6 is fixed on the horizontal plate 4, then the operator can press the handle 6 when printing, at this time only the working end surface of the steel sheet 1 contacts the surface of the PCB, without occupying more area of the surface of the PCB, and the steel sheet 1 is tightly attached to the PCB, ensuring that there is no gap between the steel sheet 1 and the PCB, and at the same time the steel sheet 1 does not move with the squeegee when printing the solder paste, after printing is completed, the operator can hold the handle 6 to lift the steel sheet 1 to achieve the effect of rapid demolding, during which the side support plate 2, the inclined rib 201, the side support rib 202, the rear support plate 3 and the rear support rib 301 play a vertical supporting role to protect the steel sheet 1 from being deformed, thereby facilitating the solder paste printing on the PCB, without the need for adhesive tape fixing, and at the same time rapid demolding can be achieved. The device not only facilitates the solder paste printing on the PCB, without the need for adhesive tape fixing, and at the same time rapid demolding can be achieved.

[0041] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. A solder paste printed steel sheet without adhesive tape fixation, characterized by: The utility model provides a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5). The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

2. The stencil of claim 1, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5). The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

3. The stencil of claim 1, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

4. The stencil of claim 1, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

5. The stencil of claim 4, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

6. The stencil of claim 4, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

7. The stencil of claim 1, wherein: The utility model discloses a steel sheet (1) is provided with two side support plates (2) and rear support plate (3) on the top, and the side support plate (2) and rear support plate (3) are provided with horizontal plate (4) on the side away from the steel sheet (1), and the horizontal plate (4) is provided with hand screw (5) in the inside, and the outer surface of hand screw (5) is provided with handle (6), and handle (6) is installed on horizontal plate (4) through hand screw (5).

8. The stencil of claim 1, wherein: ​

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