Special jig for FPCA furnace passing

Abstract

The utility model discloses a special jig for FPCA furnace passing, which comprises a base used for being arranged in a reflow oven, a surrounding edge is arranged at the top of the base, and a containing groove used for containing a circuit board is formed in the surrounding edge; comprising a positioning mechanism arranged in the containing groove and used for positioning the circuit board, the positioning mechanism comprises an insertion groove formed in the side wall of the surrounding edge and used for being inserted into the side edge of the circuit board, a movable block moving in the containing groove and a positioning groove formed in one side of the movable block, and the positioning groove and the insertion groove are oppositely arranged; and the guide assembly is arranged on the movable block. The device is simple in structure and convenient to use, can play a good role in positioning the circuit board in the FPCA furnace passing process, prevents the circuit board from easily displacing in the machining process, can adapt to circuit boards of different specifications and sizes, and has a wide application range.

Description

Technical Field

[0001] The utility model relates to the technical field of FPCA furnace passing equipment, in particular to a special fixture for FPCA furnace passing. Background Art

[0002] The furnace is an important part of the FPCA production process. It refers to the process of passing the printed circuit board through a high-temperature furnace for soldering, so that the electronic components and the conductive lines on the FPC form a permanent connection. The main purpose of the furnace is to ensure the quality of soldering and make the connection between the electronic components and the FPC more solid and reliable. Under high temperature, the solder will melt and fill the gap between the component pins and the conductive lines to form an electrical connection. During the furnace process, parameters such as temperature, time and soldering pressure need to be strictly controlled to ensure soldering quality and production efficiency.

[0003] After searching, the Chinese patent application number is: CN201620133030.4, which discloses a multi-directional adjustable furnace jig for printed circuit boards. The furnace jig includes: a base, a rotatable carrier supported on the base, a printed circuit board is placed on the carrier, a plurality of scale marks are arranged on the edge of the carrier, and each scale mark corresponds to a locking groove, and a plurality of lock buckles are arranged on the edge of the base near the carrier; the carrier is rotated to a set scale, and the lock buckle is buckled into the locking groove corresponding to the mark of the set scale, or the locking groove having a corresponding position relationship with the mark of the set scale, so as to change the furnace direction of the printed circuit board on the carrier. The rotatable carrier is supported by the base, the printed circuit board is placed on the carrier, the carrier is rotated to set an angle, and the locking groove is buckled by the lock buckle on the base, so as to change the furnace direction of the printed circuit board on the carrier, so that the materials such as terminals, sockets, and pins with inconsistent layout directions on the printed circuit board can be uniformly welded, thereby improving the welding effect.

[0004] Although the above technical solution can play a certain role in positioning the circuit board, its structure is relatively complex. Locks are required during the placement and removal of the circuit board, which is convenient for handover. At the same time, the above solution can only position circuit boards of uniform specifications and sizes. Circuit boards of different specifications and sizes need to be re-customized, which increases the cost of using the equipment. Therefore, we need to propose a special fixture for FPCA furnace passing. Utility Model Content

[0005] The purpose of the utility model is to provide a special jig for FPCA furnace passing. The device has a simple structure and is easy to use. It can play a good role in positioning the circuit board in the FPCA furnace passing to avoid the circuit board from being easily displaced during the processing. At the same time, it can adapt to circuit boards of different specifications and sizes and has a wide range of applications to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A special fixture for FPCA furnace, comprising a base for being placed in a reflow furnace, a peripheral edge being arranged on the top of the base, and a receiving groove for placing a circuit board being formed in the peripheral edge;

[0008] A positioning mechanism is provided in the receiving groove for positioning the circuit board, the positioning mechanism comprises a slot provided on the side wall of the surrounding edge for inserting the side edge of the circuit board, a movable block movable in the receiving groove, and a positioning slot provided on one side of the movable block, wherein the positioning slot and the slot are arranged opposite to each other;

[0009] It also includes a guide component arranged on the movable block.

[0010] Preferably, the positioning groove and the slot have the same specifications and are both 0.3 cm-0.5 cm away from the bottom of the accommodating groove to facilitate heat dissipation of the circuit board.

[0011] Preferably, a connecting rod is fixedly connected to the center position of one side of the movable block, and the connecting rod is slidably inserted into the surrounding edge.

[0012] Preferably, the end of the connecting rod passes through the surrounding edge and is connected to a pull ring, and a compression spring is sleeved on the connecting rod between the movable block and the inside of the surrounding edge.

[0013] Preferably, the guide assembly comprises two groups of guide blocks symmetrically arranged at both ends of the movable block, and guide grooves are symmetrically provided on the inner walls on both sides of the surrounding edge at both ends of the movable block, and the guide blocks and the guide grooves are slidably matched.

[0014] Preferably, two groups of hooks are symmetrically arranged on the outer wall at one end of the base, and two groups of hanging rings are symmetrically arranged on the outer wall at the other end of the base, and the hooks and hanging rings are arranged correspondingly.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model arranges a surrounding edge on the base, and a receiving groove is formed in the surrounding edge. The receiving groove is provided with a positioning mechanism including a slot, a movable block and a positioning groove. In actual use, the receiving groove can constitute a first re-positioning effect, and the slot and the positioning groove cooperate to constitute a second re-positioning effect. The device has a simple structure and is easy to use. It can play a good positioning role on the circuit board in the FPCA furnace, avoiding the circuit board from being easily displaced during the processing process. At the same time, it can adapt to circuit boards of different specifications and sizes, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the slot of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the movable block of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the hanging ring of the utility model.

[0021] In the figure: 1. base; 2. receiving groove; 3. surrounding edge; 4. slot; 5. movable block; 6. positioning groove; 7. connecting rod; 8. pull ring; 9. compression spring; 10. guide block; 11. guide groove; 12. hook; 13. hanging ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 , the utility model provides a technical solution:

[0024] A special fixture for FPCA furnace passing includes a base 1 for being placed in a reflow furnace, a peripheral edge 3 is arranged on the top of the base 1, and a receiving groove 2 for placing a circuit board is formed in the peripheral edge 3;

[0025] The positioning mechanism includes a positioning mechanism arranged in the receiving groove 2 for positioning the circuit board, the positioning mechanism includes a slot 4 provided on the side wall of the surrounding edge 3 for inserting the side edge of the circuit board, a movable block 5 movable in the receiving groove 2, and a positioning slot 6 provided on one side of the movable block 5, the positioning slot 6 and the slot 4 are arranged oppositely; a connecting rod 7 is fixedly connected to the center position of one side of the movable block 5, and the connecting rod 7 is slidably inserted into the surrounding edge 3. The end of the connecting rod 7 passes through the surrounding edge 3 and is connected to a pull ring 8, and a compression spring 9 is sleeved on the connecting rod 7 between the movable block 5 and the inside of the surrounding edge 3.

[0026] In actual use, the circuit board is placed inside the receiving groove 2, and one side of the circuit board is inserted into the slot 4. At the same time, the pull ring 8 is pulled to make the movable block 5 adapt to the current circuit board specifications until the other side of the circuit board is inserted into the positioning groove 6 to achieve the positioning and fixation of the circuit board. After that, the equipment is placed in the reflow furnace for furnace passing.

[0027] The accommodating groove 2 can constitute a first repositioning function, and the slot 4 and the positioning groove 6 can cooperate to constitute a second repositioning function. The device has a simple structure and is easy to use. It can play a good positioning role on the circuit board in the FPCA furnace to avoid the circuit board from being easily displaced during the processing. At the same time, by pulling the pull ring 8 to move the movable block 5, it can adapt to circuit boards of different specifications and sizes.

[0028] See also Figure 2-3 , the utility model provides a technical solution:

[0029] The guide assembly is also provided on the movable block 5. The guide assembly includes two sets of guide blocks 10 symmetrically provided at both ends of the movable block 5, and guide grooves 11 are symmetrically provided on the inner walls of both sides of the surrounding edge 3 at both ends of the movable block 5, and the guide blocks 10 and the guide grooves 11 are slidably matched.

[0030] By arranging guide blocks 10 at both ends of the movable block 5 and correspondingly opening guide grooves 11 on the inner walls of both sides of the surrounding edge 3, a good guiding effect can be played when the movable block 5 moves. At the same time, the stability can be improved after the circuit board is fixed, and the circuit board will not shake or rotate easily.

[0031] See also Figure 1-2 , the utility model provides a technical solution:

[0032] The positioning groove 6 and the slot 4 have the same specifications and are both 0.3 cm-0.5 cm away from the bottom of the accommodating groove 2 to facilitate heat dissipation of the circuit board.

[0033] By setting the positioning groove 6 and the slot 4 at a certain distance from the inner bottom of the receiving groove 2, the circuit board will not fit on the inner bottom of the receiving groove 2 when the circuit board passes through the furnace, thereby achieving good heat dissipation effect.

[0034] See also Figure 1 and Figure 4 , the utility model provides a technical solution:

[0035] Two groups of hooks 12 are symmetrically arranged on the outer wall at one end of the base 1, and two groups of hanging rings 13 are symmetrically arranged on the outer wall at the other end of the base 1, and the hooks 12 and the hanging rings 13 are arranged correspondingly.

[0036] By arranging hooks 12 and hanging rings 13 on the outer walls at both ends of the base 1, the device can be used alone or connected to each other to simultaneously perform furnace operations on multiple groups of circuit boards, and multiple groups of equipment connected by hooks 12 and hanging rings 13 can be more stable.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A special fixture for FPCA furnace, characterized by: It comprises a base (1) for being placed in a reflow furnace, the top of the base (1) is provided with a peripheral edge (3), and a receiving groove (2) for placing a circuit board is formed in the peripheral edge (3); The invention comprises a positioning mechanism arranged in the receiving groove (2) for positioning the circuit board, the positioning mechanism comprising a slot (4) provided on the side wall of the surrounding edge (3) for inserting the side edge of the circuit board, a movable block (5) movable in the receiving groove (2), and a positioning groove (6) provided on one side of the movable block (5), wherein the positioning groove (6) and the slot (4) are arranged opposite to each other; It also includes a guide component arranged on the movable block (5).

2. The FPCA furnace-passing fixture according to claim 1, characterized in that: The positioning groove (6) and the slot (4) have the same specifications and are both 0.3 cm to 0.5 cm away from the bottom of the accommodating groove (2) to facilitate heat dissipation of the circuit board.

3. The FPCA furnace-passing fixture according to claim 1, characterized in that: A connecting rod (7) is fixedly connected to the center position of one side of the movable block (5), and the connecting rod (7) is slidably inserted into the surrounding edge (3).

4. The FPCA furnace-passing fixture according to claim 3 is characterized in that: The end of the connecting rod (7) passes through the surrounding edge (3) and is connected to a pull ring (8); a compression spring (9) is sleeved on the connecting rod (7) and located between the movable block (5) and the inside of the surrounding edge (3).

5. The FPCA furnace-passing fixture according to claim 1 is characterized in that: The guide assembly comprises two groups of guide blocks (10) symmetrically arranged at both ends of the movable block (5); guide grooves (11) are symmetrically provided on the inner walls of both sides of the surrounding edge (3) located at both ends of the movable block (5); and the guide blocks (10) and the guide grooves (11) are slidably matched.

6. The FPCA furnace-passing fixture according to claim 1, characterized in that: Two groups of hooks (12) are symmetrically arranged on the outer wall at one end of the base (1), and two groups of hanging rings (13) are symmetrically arranged on the outer wall at the other end of the base (1), and the hooks (12) and the hanging rings (13) are arranged correspondingly.

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