Auxiliary production jig based on reflow soldering machine

Abstract

The utility model discloses an auxiliary production jig based on a reflow soldering machine, which comprises a bottom plate jig and a pressing jig, the bottom plate jig is arranged on the lower side of the pressing jig, the bottom plate jig is provided with a base plate and a jig plate, the jig plate is arranged on the upper side of the end face of the base plate through a buckle, the end face of the jig plate is provided with a plurality of small PCB grooves, and the small PCB grooves are arranged on the base plate. Notches are formed in the four corners of the end face of the jig plate, and springs are arranged in the notches; the pressing jig comprises a pressing plate, a bracket and an adjusting column, an embedding groove is formed in the bottom face, facing the jig plate, of the pressing plate, and a balancing weight is embedded in the embedding groove; the pressing plate is provided with pressing grooves corresponding to the small PCB grooves, and the end face of the lower side of the pressing plate is provided with a notch corresponding to the notch of the jig plate. The auxiliary jig provided by the utility model adopts the combination of the bottom plate jig and the pressing jig, so that the situation that the small PCB is warped or deformed when being subjected to reflow soldering can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of PCB fixtures, in particular to an auxiliary production fixture based on a reflow soldering machine. Background Art

[0002] Currently, in the field of SMT (surface mount technology) production, almost all PCBs (circuit boards) must pass through a reflow oven after component placement. This oven melts the solder paste between the components and the PCB, thereby ensuring a stable connection between the components and the PCB. The PCB must remain flat during reflow, otherwise it will result in dry solder joints and poor connection quality between the components and the PCB. Due to the thinness of the PCB board, the large number of components on it, the weight, or the weak connections between the small boards on the board, it is easy for the PCB to warp or deform after reflow. In mild cases, this can affect the next step of assembly, and in severe cases, the board will be directly scrapped.

[0003] In order to improve this situation, the related technology uses high-temperature stickers to fix the PCB board, but since the circuit board is too small, the high-temperature adhesive tape is difficult to fix. Based on this background, the utility model proposes an auxiliary production jig based on a reflow soldering machine. The auxiliary jig adopts a combination of a base jig and a pressing jig. The pressing jig is installed on the base jig through a bracket and an adjusting column. The pressing jig can use its own counterweight to press the PCV small board on the base jig, thereby avoiding warping or deformation during reflow soldering; at the same time, since some PCB small boards are multi-layer boards with a large thickness, they will protrude from the PCB small board groove, which will cause the pressing jig to be unable to press. Therefore, the utility model also improves the adjusting column so that the adjusting column can drive the bracket and the pressing jig to adjust the height, so that the pressing jig can press and fix the thicker PCV small board. Utility Model Content

[0004] The purpose of the present invention is to provide an auxiliary production jig based on a reflow soldering machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary production jig based on a reflow soldering machine, comprising a base plate jig and a pressing jig, wherein the base plate jig is arranged on the lower side of the pressing jig, and the base plate jig has a pad and a jig plate, wherein the jig plate is mounted on the upper side of the pad end surface by snap fastening, and a number of PCB small board slots are distributed on the end surface of the jig plate, and slots are provided at the four corners of the end surface of the jig plate, and springs are provided in the slots; the pressing jig comprises a pressing plate, a bracket and an adjusting column, wherein the pressing plate is provided with an embedding groove facing the bottom surface of the jig plate, and a counterweight is embedded in the embedding groove; a pressing groove corresponding to the PCB small board slot is arranged on the pressing plate, and a notch is provided on the lower end surface of the pressing plate corresponding to the notch on the jig plate; the bracket is U-shaped and can clamp the notch at the lower end of the pressing plate and the upper end of the pressing plate, and the lower end of the bracket is connected to a vertically arranged adjusting column.

[0006] Preferably, the adjustment column includes a matching column and a cylinder, wherein the lower end of the cylinder can extend into the slot and be connected to the spring.

[0007] Preferably, an opening is provided on the top side of the cylinder, and a limiting groove connected to the opening is provided on the outer side of the cylinder.

[0008] Preferably, the cross-section of the limiting groove is F-shaped, and the limiting groove includes a guide vertical groove and two limit horizontal grooves. A limiting tooth is provided on the outside of the column, and the limiting tooth can cooperate with any of the two limit horizontal grooves. When the column is extended into the inner side of the cylinder, the limiting tooth can move along the guide vertical groove and be fixed in the limit horizontal groove.

[0009] Preferably, the base plate jig and the pressing jig are made of high temperature resistant materials.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The auxiliary jig of the present invention adopts a combination of a base jig and a pressing jig. The pressing jig is installed on the base jig through a bracket and an adjusting column. The pressing jig can use its own counterweight to press the PCV small board on the base jig, thereby avoiding warping or deformation during reflow soldering; at the same time, since some PCB small boards are multi-layer boards with a large thickness, they will protrude from the PCB small board groove, which will cause the pressing jig to be unable to press. Therefore, the utility model also improves the adjusting column so that the adjusting column can drive the bracket and the pressing jig to adjust the height, so that the pressing jig can press and fix the thicker PCV small board. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the base plate jig and the pressing jig of the utility model when they are combined;

[0013] Figure 2 This is a schematic diagram of the structure of the base plate jig and the pressing jig of the utility model;

[0014] Figure 3 This is a schematic diagram of the back structure of the pressing fixture of the present invention;

[0015] Figure 4 This is a structural diagram of the bracket and the adjustment column of the utility model.

[0016] In the figure: 1. pad; 2. fixture plate; 3. buckle; 4. notch; 5. pressing plate; 6. notch; 7. bracket; 8. adjustment column; 801. column; 802. cylinder; 803. limit groove; 804. limit tooth. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0019] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] See also Figure 1-4The utility model provides a technical solution: an auxiliary production jig based on a reflow soldering machine, including a base jig and a pressing jig, wherein the base jig is arranged on the lower side of the pressing jig, the base jig has a pad 1 and a jig plate 2, wherein the jig plate 2 is mounted on the upper side of the end surface of the pad 1 through a snap 3, a plurality of PCB small board slots are distributed on the end surface of the jig plate 2, and a notch 4 is opened at the four corners of the end surface of the jig plate 2, and a spring is arranged in the notch 4; the pressing jig includes a pressing The pressing plate 5, the bracket 7 and the adjusting column 8, wherein the pressing plate 5 is provided with an embedding groove facing the bottom surface of the jig plate 2, and a counterweight block is embedded in the embedding groove; the pressing plate 5 is provided with a pressing groove corresponding to the PCB small board groove, and a notch 6 is provided on the lower end surface of the pressing plate 5 corresponding to the position of the notch 4 on the jig plate 2; the bracket 7 is U-shaped and can clamp the notch 6 at the lower end of the pressing plate 5 and the upper end of the pressing plate 5, and the lower end of the bracket 7 is connected to a vertically arranged adjusting column 8.

[0021] In this embodiment, the adjustment column 8 includes a column 801 and a cylinder 802 that match each other, wherein the lower end of the cylinder 802 can extend into the slot 4 and be connected to the spring.

[0022] In this embodiment, an opening is provided on the top side of the cylinder 802 , and a limiting groove 803 connected to the opening is provided on the outer side of the cylinder 802 .

[0023] In this embodiment, the cross-section of the limiting groove 803 is F-shaped, and the limiting groove 803 includes a guide vertical groove and two limit horizontal grooves. A limiting tooth 804 is provided on the outside of the column 801, and the limiting tooth 804 can cooperate with either of the two limit horizontal grooves. When the column 801 extends into the inner side of the cylinder 802, the limiting tooth 804 can move along the guide vertical groove and be fixed in the limit horizontal groove.

[0024] In this embodiment, the base plate jig and the pressing jig are made of high temperature resistant materials.

[0025] In this embodiment, the auxiliary jig adopts a combination of a base jig and a pressing jig. The pressing jig is installed on the base jig through the bracket 7 and the adjusting column 8. The pressing jig can use its own counterweight to press the PCV small board on the base jig, thereby avoiding warping or deformation during reflow soldering; at the same time, since some PCB small boards are multi-layer boards with a large thickness, they will protrude from the PCB small board groove, which will cause the pressing jig to be unable to press. Therefore, the utility model also improves the adjusting column 8 so that the adjusting column 8 can adjust the height, thereby driving the bracket 7 and the pressing jig to adjust the height, so that the pressing jig can press and fix the thicker PCV small board.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary production jig based on a reflow soldering machine, characterized in that: The invention comprises a base jig and a pressing jig, wherein the base jig is arranged on the lower side of the pressing jig, the base jig comprises a pad (1) and a jig plate (2), wherein the jig plate (2) is mounted on the upper side of the end face of the pad (1) through a snap (3), a plurality of PCB small board slots are distributed on the end face of the jig plate (2), notches (4) are opened at the four corners of the end face of the jig plate (2), and a spring is arranged in the notch (4); the pressing jig comprises a pressing plate (5), a bracket (7) and an adjusting column (8), wherein the pressing jig The plate (5) is provided with an embedding groove on the bottom surface facing the jig plate (2), and a counterweight is embedded in the embedding groove; the pressing plate (5) is provided with a pressing groove corresponding to the PCB small board groove, and a notch (6) is provided on the lower end surface of the pressing plate (5) at a position corresponding to the notch (4) on the jig plate (2); the bracket (7) is U-shaped and can clamp the notch (6) at the lower end of the pressing plate (5) and the upper end of the pressing plate (5), and the lower end of the bracket (7) is connected to a vertically arranged adjustment column (8).

2. The auxiliary production jig based on the reflow soldering machine according to claim 1, characterized in that: The regulating column (8) comprises a matching column (801) and a cylinder (802), wherein the lower end of the cylinder (802) can extend into the slot (4) and be connected to the spring.

3. The auxiliary production jig based on the reflow soldering machine according to claim 2, characterized in that: An opening is provided on the top side of the cylinder (802), and a limiting groove (803) connected to the opening is provided on the outside of the cylinder (802).

4. The auxiliary production jig based on the reflow soldering machine according to claim 3, characterized in that: The cross section of the limiting groove (803) is F-shaped. The limiting groove (803) includes a guide vertical groove and two limit horizontal grooves. A limiting tooth (804) is provided on the outside of the column (801). The limiting tooth (804) can cooperate with either of the two limit horizontal grooves. When the column (801) extends into the inner side of the cylinder (802), the limiting tooth (804) can move along the guide vertical groove and be fixed in the limit horizontal groove.

5. The auxiliary production jig based on a reflow soldering machine according to claim 1, characterized in that: The base plate jig and the pressing jig are made of high-temperature resistant materials.

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