Limiting device for SMT furnace carrier

Abstract

The utility model discloses a limiting device for an SMT furnace carrier, and relates to the field of carriers for circuit board processing, the limiting device comprises a carrier plate, the lower end of the carrier plate is provided with a bottom plate, the left inner wall and the rear inner wall of the carrier plate are both provided with placing plates, the ends, close to each other, of the two placing plates are jointly provided with a placing groove, and the placing grooves are arranged on the bottom plate. U-shaped rods are mounted at the upper ends of the two placement plates, two moving parts which are symmetrically distributed front and back are arranged at the upper ends of the two U-shaped rods, the four moving parts extend to the lower sides of the two placement plates correspondingly, and limiting parts are connected to the outer surfaces of the four moving parts in a sleeving mode. According to the utility model, the circuit board can be conveniently fixed and disassembled through the arrangement of the moving part, the operation is simple, the operation steps are few, the time is saved, the working efficiency is improved, the circuit board can be conveniently taken out and placed through the limiting part, convenience is brought to workers, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the field of carriers for circuit board processing, in particular to a limiting device for SMT furnace carriers. Background Art

[0002] SMT is the abbreviation of surface mount technology, which is an electronic mounting technology that uses professional automatic assembly equipment such as solder paste printers, placement machines, and reflow soldering to directly mount and solder surface mount components (including resistors, capacitors, inductors, etc.) to the surface of circuit boards. It compresses the volume of traditional electronic components to only a few tens of the original size, achieving high-density, high-reliability, miniaturization, low-cost and automated production of electronic product assembly.

[0003] The prior art (publication number: CN 217428452 U) discloses an SMT patch oven carrier, including a carrier plate unit and a positioning pressure rod unit movably installed on the carrier plate unit. By opening a circuit board placement position on the plate body, it is convenient to initially position and place the circuit board when processing the circuit board, and taking grooves are opened at the four corners of the circuit board placement position to facilitate taking the circuit board after processing; by opening a positioning circular groove on the plate body, and installing a fixed shaft column with a ring block in the positioning circular groove, a lower pressure rod is provided on the side of the ring block.

[0004] Although the above patent uses a pressure head set at one end of the lower pressure rod to press and fix the circuit board, which is convenient for positioning and use, it has the following disadvantages. When fixing and removing the circuit board, it is necessary to rotate multiple positioning pressure rod units to be close to or away from the circuit board before the circuit board can be fixed and removed. There are many operation steps and a long operation time, which affects the work efficiency and needs further improvement. For this reason, we propose a limit device for SMT furnace carrier. Utility Model Content

[0005] The main purpose of the utility model is to provide a limiting device for an SMT furnace carrier, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A limiting device for an SMT furnace carrier comprises a carrier plate, a bottom plate is arranged at the lower end of the carrier plate, a placement plate is installed on the left inner wall and the rear inner wall of the carrier plate, a placement groove is commonly provided at one end of the two placement plates close to each other, a U-shaped rod is installed at the upper end of the two placement plates, two movable parts symmetrically distributed front and back are arranged at the upper ends of the two U-shaped rods, four movable parts extend to the lower sides of the two placement plates respectively, and the outer surfaces of the four movable parts are all sleeved with limiting parts.

[0008] Preferably, the movable component includes a limit block, which is arranged on the U-shaped rod, and a guide rod is installed at the lower end of the limit block. The lower end of the guide rod movably penetrates the upper wall of the U-shaped rod and the lower end of the placement plate and extends to the lower side of the placement plate, and the outer surface of the guide rod is movably sleeved with a spring.

[0009] Preferably, the limiting component includes a pressure plate, the pressure plate fixed sleeve is arranged on the outer cylindrical surface of the guide rod, the upper end of the pressure plate is installed with a limiting plate, the lower end of the limiting plate is provided with a rotating plate, one end of the rotating plate extends to the placement groove, the other end of the rotating plate is rotatably connected to the pressure plate through a rotating shaft, the upper end of the rotating plate is fixedly connected with a connecting rope, and the end of the connecting rope away from the rotating plate is fixedly connected to the U-shaped rod.

[0010] Preferably, the lower end of the spring is fixedly connected to the upper end of the rotating plate, and the upper end of the spring is fixedly connected to the upper wall of the U-shaped rod.

[0011] Preferably, the lower end of the rotating plate is in active contact with the upper end of the placing plate.

[0012] Preferably, two grooves are provided in the middle portion of the inner wall of the carrier plate, two support rods are installed on the front inner wall and the rear inner wall of the carrier plate, two handles symmetrically distributed on the left and right are installed on the upper end of the carrier plate, and guide rods are installed on the four corners of the lower end of the carrier plate, and the guide rods are movably inserted into the bottom plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By setting the moving parts, the circuit board can be easily fixed and disassembled. When the circuit board needs to be disassembled, hold the handle to drive the carrier plate away from the top of the bottom plate, and then place the carrier plate on the workbench. The guide rod moves upward under the influence of pressure, driving the limit component away from the top of the circuit board, and the circuit board can be disassembled. When installing, just place the circuit board above the placement slot, hold the handle to drive the carrier plate to move upward, the guide rod is no longer under pressure, and the elastic force of the spring drives the limit component to move downward to fix the circuit board. The operation is simple, with fewer operating steps, saving time and improving work efficiency.

[0015] 2. The limiting component can be used to facilitate the removal and placement of the circuit board. When the guide rod moves upward, it drives the pressure plate and the rotating plate to move upward. The rotating plate rotates downward under the influence of gravity, thereby staying away from the top of the placement slot, thereby preventing the rotating plate from blocking the circuit board from moving upward or downward. Workers can directly take out or place the circuit board, which brings convenience to the workers, saves time, and further improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the entire structure proposed in this embodiment;

[0017] Figure 2 It is a schematic diagram of the explosion structure in this embodiment;

[0018] Figure 3 Schematic diagram of the structure of the moving parts in this embodiment;

[0019] Figure 4 Schematic diagram of the structure of the limiting component in this embodiment.

[0020] In the figure: 1. carrier plate; 2. bottom plate; 3. groove; 4. support rod; 5. handle; 6. U-shaped rod; 7. placement plate; 8. placement slot; 9. moving part; 10. limiting part; 11. guide rod; 91. limiting block; 92. guide rod; 93. spring; 101. pressure plate; 102. rotating plate; 103. limiting plate; 104. connecting rope. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-Figure 4As shown, a limiting device for an SMT furnace carrier comprises a carrier plate 1, a bottom plate 2 is arranged at the lower end of the carrier plate 1, a placement plate 7 is installed on the left inner wall and the rear inner wall of the carrier plate 1, a placement groove 8 is commonly provided at one end of the two placement plates 7 close to each other, the placement groove 8 is used to facilitate the placement of the circuit board, a U-shaped rod 6 is installed at the upper end of the two placement plates 7, two movable parts 9 symmetrically distributed front and back are arranged at the upper end of the two U-shaped rods 6, the four movable parts 9 extend to the lower sides of the two placement plates 7 respectively, and the outer surfaces of the four movable parts 9 are all sleeved with limiting parts 10.

[0025] The moving component 9 is used to facilitate the fixing and disassembly of the circuit board. The operation is simple, with fewer operating steps, saving time and improving work efficiency. The specific structure is: the moving component 9 includes a limit block 91, and the limit block 91 is used to limit the downward movement range of the guide rod 92. The limit block 91 is set on the U-shaped rod 6, and a guide rod 92 is installed at the lower end of the limit block 91. The lower end of the guide rod 92 is movably inserted into the upper wall of the U-shaped rod 6 and the lower end of the placement plate 7 and extends to the lower side of the placement plate 7. The outer surface of the guide rod 92 is movably sleeved with a spring 93.

[0026] The limiting component 10 is used to facilitate workers to take out and place the circuit board, which brings convenience to the workers, saves time, and further improves work efficiency. The specific structure is as follows: the limiting component 10 includes a pressing plate 101, the pressing plate 101 is fixedly sleeved on the outer cylindrical surface of the guide rod 92, the upper end of the pressing plate 101 is installed with a limiting plate 103, the lower end of the limiting plate 103 is provided with a rotating plate 102, the limiting plate 103 is used to prevent the rotating plate 102 from rotating upward, one end of the rotating plate 102 extends to the placement slot 8, and the rotating plate 1 The other end of 02 is rotatably connected to the pressure plate 101 through a rotating shaft. The rotating plate 102 can only be rotated downward by ninety degrees. The upper end of the rotating plate 102 is fixedly connected with a connecting rope 104. The end of the connecting rope 104 away from the rotating plate 102 is fixedly connected to the U-shaped rod 6. When the circuit board is fixed, the connecting rope 104 is in a straight state. When the rotating plate 102 moves upward, the rotating plate 102 rotates downward due to the influence of gravity, thereby moving away from the top of the placement slot 8, thereby preventing the rotating plate 102 from blocking the circuit board from moving upward or downward.

[0027] The lower end of the spring 93 is fixedly connected to the upper end of the rotating plate 102, and the upper end of the spring 93 is fixedly connected to the upper wall of the U-shaped rod 6. The spring 93 is used to drive the rotating plate 102 to reset and fix the circuit board through elastic force.

[0028] When fixing the circuit board, the lower end of the rotating plate 102 is in active contact with the upper end of the placing plate 7 .

[0029] Two grooves 3 are provided in the middle of the inner wall of the carrier plate 1, and the grooves 3 are used to facilitate the installation and disassembly of the circuit board. Two support rods 4 are installed on the front inner wall and the rear inner wall of the carrier plate 1, and the support rods 4 are used to support the circuit board. Two handles 5 symmetrically distributed on the left and right are installed on the upper end of the carrier plate 1, and the handles 5 are used to facilitate holding the carrier plate 1. Guide rods 11 are installed at the four corners of the lower end of the carrier plate 1, and the guide rods 11 are movably inserted into the base plate 2. The guide rods 11 are used to position the carrier plate 1 when it is placed on the base plate 2.

[0030] The utility model provides a limiting device for an SMT furnace carrier. When the circuit board needs to be disassembled, the handle 5 is held to drive the carrier plate 1 away from the top of the bottom plate 2, and then the carrier plate 1 is placed on the workbench. The guide rod 92 moves upward under the influence of pressure, and the spring 93 is compressed to drive the limiting component 10 away from the top of the circuit board. When the guide rod 92 moves upward, it drives the pressure plate 101 and the rotating plate 102 to move upward. The rotating plate 102 rotates downward under the influence of gravity, thereby moving away from the top of the placement slot 8, avoiding the rotating plate 102 By blocking the circuit board from moving upward or downward, the circuit board can be disassembled. During installation, it is only necessary to place the circuit board above the placement slot 8, hold the handle 5 to drive the carrier plate 1 to move upward, the guide rod 92 is no longer subjected to pressure, and the spring 93 drives the limiting component 10 to move downward through elastic force. When the rotating plate 102 moves downward, the connecting rope 104 gradually straightens the rotating plate 102 to fix the circuit board. Hold the handle 5 to drive the carrier plate 1 to be placed above the bottom plate 2 through the guide rod 11, and then place the carrier at the designated position for furnace processing.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A limiting device for an SMT furnace carrier, comprising a carrier plate (1), characterized in that: A bottom plate (2) is provided at the lower end of the carrier plate (1), a placement plate (7) is installed on the left inner wall and the rear inner wall of the carrier plate (1), a placement groove (8) is provided at the ends of the two placement plates (7) close to each other, a U-shaped rod (6) is installed at the upper ends of the two placement plates (7), and two movable parts (9) symmetrically distributed front and back are provided at the upper ends of the two U-shaped rods (6), and the four movable parts (9) extend to the lower sides of the two placement plates (7) respectively, and the outer surfaces of the four movable parts (9) are all sleeved with limiting parts (10).

2. The limiting device for SMT furnace carrier according to claim 1, characterized in that: The moving component (9) comprises a limit block (91), the limit block (91) is arranged on the U-shaped rod (6), a guide rod (92) is installed at the lower end of the limit block (91), the lower end of the guide rod (92) movably penetrates the upper wall of the U-shaped rod (6) and the lower end of the placement plate (7) and extends to the lower side of the placement plate (7), and a spring (93) is movably sleeved on the outer surface of the guide rod (92).

3. The limiting device for the SMT furnace carrier according to claim 2, characterized in that: The limiting component (10) comprises a pressing plate (101), the pressing plate (101) being fixedly sleeved on the outer cylindrical surface of the guide rod (92), a limiting plate (103) being installed at the upper end of the pressing plate (101), a rotating plate (102) being arranged at the lower end of the limiting plate (103), one end of the rotating plate (102) extending to the placement groove (8), the other end of the rotating plate (102) being rotatably connected to the pressing plate (101) via a rotating shaft, a connecting rope (104) being fixedly connected to the upper end of the rotating plate (102), and one end of the connecting rope (104) away from the rotating plate (102) being fixedly connected to the U-shaped rod (6).

4. The limiting device for the SMT furnace carrier according to claim 3, characterized in that: The lower end of the spring (93) is fixedly connected to the upper end of the rotating plate (102), and the upper end of the spring (93) is fixedly connected to the upper wall of the U-shaped rod (6).

5. The limiting device for SMT furnace carrier according to claim 3, characterized in that: The lower end of the rotating plate (102) is in active contact with the upper end of the placement plate (7).

6. The limiting device for SMT furnace carrier according to claim 1, characterized in that: Two grooves (3) are provided in the middle of the inner wall of the carrier plate (1); two support rods (4) are installed on the front inner wall and the rear inner wall of the carrier plate (1); two handles (5) symmetrically distributed on the left and right are installed on the upper end of the carrier plate (1); guide rods (11) are installed at the four corners of the lower end of the carrier plate (1); and the guide rods (11) are movably inserted into the bottom plate (2).

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