PCB (Printed Circuit Board) thin plate furnace-passing jig

Abstract

The utility model relates to a PCB sheet furnace-passing jig comprising a base plate, the base plate is provided with a groove used for placing a sheet, the groove is internally provided with a plurality of first limiting nails and an elastic limiting assembly, and the first limiting nails and the elastic limiting assembly are respectively close to two opposite sides in the groove; the elastic limiting assembly comprises a sliding block and a second limiting nail, the sliding block is elastically clamped on the bottom plate, the second limiting nail is arranged on the sliding block, the sliding block can slide relative to the bottom plate so as to be close to or away from the first limiting nail, and the thin plate can be clamped to the first limiting nail and the second limiting nail. According to the utility model, through the first limiting nail arranged in the groove and the slidable elastic limiting assembly comprising the second limiting nail, the PCB thin plate can be ensured to be accurately positioned and fixed when being placed, the stability and the position accuracy of the thin plate can be maintained in a furnace passing process, and the production reject ratio caused by position deviation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary jigs for processing circuit boards, and in particular to a PCB thin plate furnace passing jig. Background Art

[0002] In the SMT (surface mount technology) production process of PCB (Printed Circuit Board), a furnace fixture is generally required to hold up and fix the PCB to prevent the PCB from warping and deformation during the furnace process, while protecting the plug-in components that have been soldered on the PCB. Most existing furnace fixtures use spring pressure plates or screws to press the PCB to fix the PCB. This method makes the installation of the PCB more complicated and the operation is cumbersome and inconvenient, especially for thin boards, which are easily damaged during the installation process. Utility Model Content

[0003] In view of this, the utility model provides a PCB thin plate furnace passing fixture which is convenient to install and stable to fix.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A PCB thin plate furnace passing jig includes a base plate, the base plate is provided with a groove for placing the thin plate, the groove is provided with a plurality of first limiting pins and elastic limiting components, the first limiting pins and the elastic limiting components are respectively close to opposite sides of the groove; the elastic limiting components include a slider elastically clamped on the base plate, and a second limiting pin arranged on the slider, the slider can slide relative to the base plate to approach or move away from the first limiting pin, and the thin plate can be clamped on the first limiting pin and the second limiting pin.

[0006] In the above technical solution, a first limiting pin and a slidable elastic limiting assembly including a second limiting pin are arranged in the groove, and the preset openings on the thin plate are respectively clamped on the first limiting pin and the second limiting pin. Through the pulling effect of the elastic structure on the thin plate, it can ensure that the PCB thin plate is accurately positioned and fixed when placed, which helps to maintain the stability and position accuracy of the thin plate during the furnace process and reduce the production defect rate caused by position offset. Fixing the thin plate by clamping can reduce scratches or damage to the surface of the thin plate compared to traditional spring clip clamping or screw fixing methods. At the same time, the operation method is simple and the installation is more convenient and quick.

[0007] Optionally, in a possible implementation, a strip-shaped limiting groove is provided on the bottom plate, and the sliding block is slidably disposed in the strip-shaped limiting groove and can slide along the length direction of the strip-shaped limiting groove.

[0008] In the above technical solution, through the design of the strip-shaped limiting groove, the slider can slide precisely therein, and the sliding of the slider in the strip-shaped limiting groove is constrained by the groove wall, thereby greatly improving its stability and reliability.

[0009] Optionally, in a possible implementation, extension grooves are provided on opposite sides of the strip-shaped limit groove in the width direction, and two elastic bent rods are provided on the slider, one end of the two elastic bent rods are fixed on the slider, and the other end is movably abutted in the two extension grooves respectively.

[0010] In the above technical solution, the two extension grooves are used as support points for the elastic bent rods, and the free ends of the two elastic bent rods are respectively abutted against the groove walls of the two extension grooves, and the groove walls of the two extension grooves are arc-shaped structures. In this way, when the slider moves along the strip limit groove to move in the direction close to the first limit pin, the two elastic bent tubes will be compressed. When the thin plate is installed, that is, when the through hole on the thin plate is connected to the second limit pin, the elastic bent tube will cause the slider to move in the opposite direction under the action of elastic force to tighten the thin plate, thereby fixing the thin plate.

[0011] Optionally, in a possible implementation manner, the two elastic bent rods are cross-arranged.

[0012] In the above technical solution, the structural stability of the slider is significantly improved by cross-arranging the elastic bent rods, and the elastic bent rods have a larger deformation space, thereby improving the elastic force of the elastic bent pipe and the fixing stability of the thin plate.

[0013] Optionally, in a possible implementation manner, the second limiting pin is located on one end of the sliding block close to the first limiting pin, and the other end of the sliding block is connected to a push button.

[0014] In the above technical solution, by setting a push button at one end of the slider, the user can directly control the movement of the slider by pushing the push button, without the need to use tools or perform complicated operations, which greatly simplifies the operating steps and improves work efficiency.

[0015] Optionally, in a possible implementation, a first card slot is provided on a side wall of the first limiting nail, and a second card slot is provided on a side wall of the second limiting nail, and the first card slot and the second card slot are arranged back to back.

[0016] In the above technical solution, the first card slot and the second card slot are used to fix the thin plate. After the through hole on the thin plate is engaged with the first limit pin and the second limit pin, the side walls of the through hole will be engaged with the first card slot and the second card slot at the same time, which can effectively prevent the thin plate from detaching in the vertical direction, thereby improving the fixing stability of the thin plate.

[0017] Optionally, in a possible implementation, a plurality of air-avoiding grooves are provided on the side of the groove.

[0018] In the above technical solution, the design of the air-avoiding groove can facilitate the removal of the thin plate after processing is completed, and can avoid the situation where the thin plate is completely fitted into the groove, making it difficult for the user to remove the thin plate.

[0019] Optionally, in a possible implementation manner, a position avoidance hole is provided in the groove, and the position avoidance hole passes through the bottom plate.

[0020] In the above technical solution, the design of the avoidance hole can avoid the electronic components on the thin plate, forming a space for placing the electronic components, thereby avoiding damage to the above electronic components.

[0021] Optionally, in a possible implementation, the groove is a square groove structure, and fault-tolerant grooves are provided at four corners of the square groove structure.

[0022] In the above technical solution, the fault-tolerant groove design at the four corners allows a certain amount of fault-tolerant space during the assembly process. Even if there is a slight position deviation or dimensional error, fine-tuning can be performed through the fault-tolerant groove to ensure smooth assembly, thereby improving assembly accuracy and effectively avoiding the occurrence of stress concentration.

[0023] Optionally, in a possible implementation, the grooves are multiple and spaced apart on the bottom plate, and the first limiting pins and elastic limiting components are multiple groups corresponding to the multiple grooves.

[0024] In the above technical solution, the design of multiple grooves enables the fixture to fix multiple PCB sheets at the same time, thereby improving processing efficiency.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The furnace passing jig of the utility model can ensure that the PCB thin plate is accurately positioned and fixed when placed through the first limiting pin set in the groove and the slidable elastic limiting component including the second limiting pin, which helps to maintain the stability and position accuracy of the thin plate during the furnace passing process and reduce the production defect rate caused by position deviation.

[0027] In addition, the thin plate is fixed by clipping, which can reduce scratches or damage to the surface of the thin plate compared to traditional spring clip clamping or screw fixing methods. At the same time, the operation is simple and the installation is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment.

[0030] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0031] Figure 3 It is a schematic structural diagram of a strip limiting groove in an embodiment.

[0032] Figure 4 It is a schematic structural diagram of an elastic limiting component according to an embodiment.

[0033] Figure numerals: 1-bottom plate; 11-strip limiting groove; 12-extension groove; 2-groove; 3-first limiting pin; 4-elastic limiting assembly; 41-slider; 42-second limiting pin; 43-elastic bending rod; 44-push button; 5-avoidance groove; 6-avoidance hole; 7-fault-tolerant groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0036] Please refer to Figure 1 and Figure 2The present embodiment provides a PCB thin plate furnace passing jig, including a bottom plate 1, a groove 2 for placing the thin plate is provided on the bottom plate 1, a plurality of first limiting pins 3 and elastic limiting components 4 are provided in the groove 2, the first limiting pins 3 and the elastic limiting components 4 are respectively close to the opposite sides of the groove 2; the elastic limiting components 4 include a slider 41 elastically clamped on the bottom plate 1, and a second limiting pin 42 arranged on the slider 41, the slider 41 can slide relative to the bottom plate 1 to approach or move away from the first limiting pin 3, and the thin plate can be clamped on the first limiting pin 3 and the second limiting pin 42.

[0037] Specifically, this embodiment takes a square thin plate as an example, and perforations are preset at the four corners of the square thin plate. Accordingly, there are two first limit pins 3 and two groups of elastic limit components 4. The two first limit pins 3 correspond to the two through holes on the same side of the square thin plate, and the two groups of elastic limit components 4 correspond to the two through holes on the other side.

[0038] In this embodiment, a first limiting pin 3 and a slidable elastic limiting assembly 4 including a second limiting pin 42 are arranged in the groove 2, and the preset openings on the thin plate are respectively clamped on the first limiting pin 3 and the second limiting pin 42. Through the pulling effect of the elastic structure on the thin plate, it can ensure that the PCB thin plate is accurately positioned and fixed when placed, which helps to maintain the stability and position accuracy of the thin plate during the furnace process and reduce the production defect rate caused by position offset. Fixing the thin plate by clamping can reduce scratches or damage to the surface of the thin plate compared to traditional spring clip clamping or screw fixing methods. At the same time, the operation method is simple and the installation is more convenient and quick.

[0039] It should be noted that the groove 2 is a square groove structure, and the four corners of the square groove structure are provided with fault-tolerant grooves 7. The square groove structure is matched with the structure of the thin plate, and the design of the fault-tolerant grooves 7 at the four corners allows a certain amount of fault-tolerant space during the assembly process. Even if there is a slight position deviation or size error, it can be fine-tuned through the fault-tolerant grooves 7 to ensure smooth assembly, thereby improving assembly accuracy and effectively avoiding the occurrence of stress concentration.

[0040] Please refer to Figure 3 In this embodiment, a strip-shaped limiting groove 11 is provided on the bottom plate 1 , and the slider 41 is slidably mounted in the strip-shaped limiting groove 11 and can slide along the length direction of the strip-shaped limiting groove 11 .

[0041] Through the design of the strip-shaped limiting groove 11, the slider 41 can slide precisely therein, and the sliding of the slider 41 in the strip-shaped limiting groove 11 is constrained by the groove wall, thereby greatly improving its stability and reliability. Specifically, a convex edge extending inward is provided at the notch edge of the strip-shaped limiting groove 11, and its function is to limit the slider 41 and prevent the slider 41 from escaping from the strip-shaped limiting groove 11.

[0042] Please refer to Figure 3 and Figure 4 In this embodiment, two opposite sides of the strip-shaped limiting groove 11 in the width direction are provided with extension grooves 12, and two elastic bent rods 43 are provided on the slider 41, one end of the two elastic bent rods 43 are fixed on the slider 41, and the other ends are movably abutted in the two extension grooves 12. Among them, the extension groove 12 has an arc-shaped side wall, and the elastic bent rod 43 abuts on the arc-shaped side wall.

[0043] The two extension grooves 12 of this embodiment are used as support points for the elastic bent rods 43, and the free ends of the two elastic bent rods 43 are respectively abutted against the groove walls of the two extension grooves 12, and the groove walls of the two extension grooves 12 are arc-shaped structures. In this way, when the slider 41 moves along the strip-shaped limiting groove 11 to move in the direction close to the first limiting nail 3, the two elastic bent tubes will be compressed. When the thin plate is installed, that is, the through hole on the thin plate is connected to the second limiting nail 42, the elastic bent tube will cause the slider 41 to move in the opposite direction under the action of elastic force to tighten the thin plate, thereby fixing the thin plate.

[0044] In addition, the two elastic bent rods 43 are cross-arranged. By cross-arranging the elastic bent rods 43, the structural stability of the slider 41 is significantly improved, and the elastic bent rods 43 have a larger deformation space, thereby improving the elastic force of the elastic bent pipe and the fixing stability of the thin plate.

[0045] In this embodiment, the second limiting pin 42 is located at one end of the slider 41 close to the first limiting pin 3, and the other end of the slider 41 is connected to a push button 44. By providing the push button 44 at one end of the slider 41, the user can directly control the movement of the slider 41 by pushing the push button 44, thereby eliminating the need to use tools or perform complicated operations, greatly simplifying the operating steps and improving work efficiency.

[0046] In this embodiment, the side wall of the first limiting nail 3 is provided with a first slot (not shown in the figure), and the side wall of the second limiting nail 42 is provided with a second slot (not shown in the figure), and the first slot and the second slot are arranged back to back.

[0047] The first card slot and the second card slot are used to fix the thin plate. After the through hole on the thin plate is engaged with the first limit pin 3 and the second limit pin 42, the side walls of the through hole will be engaged with the first card slot and the second card slot at the same time, which can effectively prevent the thin plate from detaching in the vertical direction, thereby improving the fixing stability of the thin plate.

[0048] Please refer to Figure 1 In this embodiment, a plurality of air-avoiding grooves 5 are provided on the side of the groove 2. The design of the air-avoiding grooves 5 can facilitate the removal of the thin plate after processing, and can avoid the situation where the thin plate is completely fitted with the groove 2, which makes it difficult for the user to remove the thin plate.

[0049] In this embodiment, a position avoidance hole 6 is provided in the groove 2, and the position avoidance hole 6 passes through the bottom plate 1. The design of the position avoidance hole 6 can avoid the electronic components on the thin plate, forming a space for placing the electronic components, thereby avoiding damage to the above-mentioned electronic components.

[0050] In this embodiment, the grooves 2 are arranged in a plurality of intervals on the bottom plate 1, and the first limiting pins 3 and the elastic limiting components 4 are arranged in a plurality of groups corresponding to the plurality of grooves 2. The design of the plurality of grooves 2 enables the fixture to fix a plurality of PCB sheets at the same time, thereby improving the processing efficiency.

[0051] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB thin plate furnace fixture, characterized in that: It includes a base plate, which is provided with a groove for placing a thin plate, and a plurality of first limit pins and elastic limit components are provided in the groove, and the first limit pins and the elastic limit components are respectively close to the opposite sides of the groove; the elastic limit component includes a slider elastically clamped on the base plate, and a second limit pin arranged on the slider, the slider can slide relative to the base plate to approach or move away from the first limit pin, and the thin plate can be clamped on the first limit pin and the second limit pin.

2. The PCB sheet furnace fixture according to claim 1, characterized in that: The bottom plate is provided with a strip-shaped limiting groove, and the sliding block is slidably clamped in the strip-shaped limiting groove and can slide along the length direction of the strip-shaped limiting groove.

3. The PCB sheet furnace fixture according to claim 2, characterized in that: Extension grooves are provided on opposite sides of the strip-shaped limiting groove in the width direction, and two elastic bent rods are provided on the sliding block, one end of the two elastic bent rods are fixed on the sliding block, and the other end is movably abutted in the two extension grooves respectively.

4. The PCB sheet furnace fixture according to claim 3, characterized in that: The two elastic bent rods are cross-arranged.

5. The PCB sheet furnace fixture according to claim 1, characterized in that: The second limiting pin is located on one end of the sliding block close to the first limiting pin, and the other end of the sliding block is connected to a push button.

6. The PCB sheet furnace fixture according to claim 1, characterized in that: A first clamping groove is disposed on the side wall of the first limiting nail, and a second clamping groove is disposed on the side wall of the second limiting nail. The first clamping groove and the second clamping groove are arranged opposite to each other.

7. The PCB sheet furnace fixture according to claim 1, characterized in that: A plurality of air-avoiding grooves are arranged on the side of the groove.

8. The PCB sheet furnace fixture according to claim 1, characterized in that: A position avoidance hole is arranged in the groove, and the position avoidance hole passes through the bottom plate.

9. The PCB sheet furnace fixture according to claim 1, characterized in that: The groove is a square groove structure, and fault-tolerant grooves are arranged at the four corners of the square groove structure.

10. The PCB sheet furnace fixture according to any one of claims 1 to 9, characterized in that: The grooves are arranged in plurality on the bottom plate at intervals, and the first limiting pins and elastic limiting components are arranged in a plurality of groups corresponding to the plurality of grooves.

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