Circuit board fuse machine

Abstract

The utility model discloses a hot melting machine for a circuit board, which comprises a machine table, and a hot melting device and a replaceable positioning jig which are arranged on the machine table, the replaceable positioning jig comprises a jig body, at least two centering positioning pins, at least one fool-proof positioning pin and four corner positioning pins. The upper surface of the jig body is provided with a positioning area of a rectangular structure, and the positioning area is provided with two opposite first positioning side edges and two opposite second positioning side edges. The four corners of the positioning area are each provided with a corner positioning pin in a matched mode, each first positioning side edge of the positioning area is provided with at least one centering positioning pin in a matched mode, and at least one of the two first positioning side edges of the positioning area is provided with a fool-proof positioning pin in a matched mode. According to the utility model, the multi-layer circuit board can be accurately aligned so as to ensure accurate hot melting and fixing of the multi-layer circuit board.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, and in particular to a circuit board hot melt machine. Background Technology

[0002] Existing multilayer circuit boards require positioning fixtures to hold each layer in place during the heat-melting process. These fixtures typically have only three positioning pins: two for centering the board and one for error prevention. However, when there are significant differences in material expansion and contraction between the layers, or large variations in copper area across different areas of the same layer, relying solely on the three pins can easily lead to significant misalignment of some layers during stacking, resulting in a substandard multilayer circuit board product.

[0003] In view of the above problems, it is necessary to study a circuit board hot melt machine that can accurately align multilayer circuit boards and ensure accurate hot melt fixing of multilayer circuit boards. Utility Model Content

[0004] The purpose of this invention is to provide a circuit board hot melt machine that enables accurate alignment of multilayer circuit boards and ensures accurate hot melt fixing of multilayer circuit boards.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A circuit board hot melt machine includes a machine base, a hot melt device mounted on the machine base, and a replaceable positioning fixture; the replaceable positioning fixture includes a fixture body, at least two centering positioning pins, at least one foolproof positioning pin, and four corner positioning pins; the upper surface of the fixture body has a rectangular positioning area, the positioning area has two opposing first positioning sides and two opposing second positioning sides; each of the four corners of the positioning area is fitted with a corner positioning pin, each first positioning side of the positioning area is fitted with at least one centering positioning pin, and at least one of the two first positioning sides of the positioning area is fitted with a foolproof positioning pin.

[0007] The fixture body is made of bakelite.

[0008] Each second positioning side of the positioning area is fitted with at least one reinforcing positioning pin and / or each first positioning side of the positioning area is fitted with at least one reinforcing positioning pin.

[0009] The centering positioning pin, the foolproof positioning pin, the corner positioning pin, and the reinforced positioning pin are all spring pins.

[0010] The hot melt device includes at least one hot melt mechanism; the hot melt mechanism includes a hot melt bracket mounted on the machine base and a plurality of hot melt components mounted on the hot melt bracket, the hot melt components including a telescopic cylinder fixed to the hot melt bracket and a soldering iron tip fixed to the telescopic rod of the telescopic cylinder.

[0011] The machine tool is equipped with a lead screw translation device that is connected to the hot melt support of the hot melt mechanism.

[0012] The machine tool is equipped with a fixed base; the lower surface of the fixture body of the replaceable positioning fixture is fitted with a plurality of mounting pins that are inserted into the fixed base; the side of the fixture body is provided with a clearance groove.

[0013] The replaceable positioning fixture is equipped with an isolation plate placed on the upper surface of the fixture body. The isolation plate is engaged with the center positioning pin, the foolproof positioning pin, and the corner positioning pin.

[0014] The circuit board hot melt machine also includes a pressure plate; the pressure plate is engaged with a centering positioning pin, a foolproof positioning pin, and a corner positioning pin.

[0015] The pressure plate is provided with a hot-melt clearance opening corresponding to the hot-melt device.

[0016] With the above-described solution, the replaceable positioning fixture of this invention has at least two centering positioning pins and at least one foolproof positioning pin on its fixture body. This allows the replaceable positioning fixture to center multi-layer circuit boards and ensure the correct placement orientation of the circuit boards. Furthermore, the fixture body also has a corner positioning pin at each of the four corners of the positioning area. These four corner positioning pins can position the four corners of each layer of circuit board, allowing the circuit boards to be placed more accurately on the fixture body. This ensures accurate alignment of each layer of circuit boards and guarantees accurate heat-sealing fixation. Additionally, if necessary, multiple reinforcing positioning pins can be added to the middle area of ​​the fixture body to further improve the positioning effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an exploded view of the structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the hot melt assembly of this utility model.

[0020] Figure 4 This is a top view of the interchangeable positioning fixture of this utility model.

[0021] Figure 5This is a bottom view of the interchangeable positioning fixture of this utility model.

[0022] Figure 6 This is a top view of the pressure plate of this utility model.

[0023] Label Explanation:

[0024] Machine base A, clearance channel A0, lead screw translation device A1, fixed base A2.

[0025] Hot melt device B, hot melt mechanism B1, hot melt support B11, hot melt assembly B12, telescopic cylinder B121, soldering iron tip B122.

[0026] Replaceable positioning fixture C,

[0027] Fixture body 1, positioning area 11, first positioning side 111, second positioning side 112, clearance groove 12.

[0028] Centering pin 2,

[0029] 3. Anti-foolproof positioning pins.

[0030] Corner positioning pin 4,

[0031] Strengthen positioning pin 5,

[0032] Isolation plate D,

[0033] Install pin 6.

[0034] Pressure plate E, hot melt clearance port E1. Detailed Implementation

[0035] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0036] like Figures 1 to 6As shown, this utility model discloses a circuit board hot-melting machine, which includes a machine base A, a hot-melting device B installed on the machine base A, and a replaceable positioning fixture C; wherein, the replaceable positioning fixture C is used for positioning multilayer circuit boards, the replaceable positioning fixture C includes a fixture body 1, at least two centering positioning pins 2, at least one foolproof positioning pin 3, and four corner positioning pins 4. The upper surface of the fixture body 1 has a rectangular positioning area 11, the positioning area 11 has two opposing first positioning sides 111 and two opposing second positioning sides 112; each of the four corners of the positioning area 11 is fitted with a corner positioning pin 4, each first positioning side 111 of the positioning area 11 is fitted with at least one centering positioning pin 2, and at least one of the two first positioning sides 111 of the positioning area 11 is fitted with a foolproof positioning pin 3; the centering positioning pin 2, the foolproof positioning pin 3, and the corner positioning pins 4 are used for insertion and engagement with the circuit board.

[0037] As described above, the fixture body 1 of the replaceable positioning fixture C of this utility model is equipped with at least two centering positioning pins 2 and at least one foolproof positioning pin 3, thereby enabling the replaceable positioning fixture C of this utility model to center the multi-layer circuit board and ensure the correct placement direction of the circuit board; in addition, the fixture body 1 of the replaceable positioning fixture C of this utility model is also equipped with a corner positioning pin 4 at each of the four corners of the positioning area 11. These four corner positioning pins 4 can position the four corners of each layer of circuit board, so that the circuit board can be placed more accurately on the fixture body 1, thereby ensuring accurate alignment of each layer of circuit board and ensuring accurate heat melting of each layer of circuit board.

[0038] In an embodiment of this utility model, the hot-melt device B may include at least one hot-melt mechanism B1. Specifically, the hot-melt device B may include two opposing hot-melt mechanisms B1, which are used to perform hot-melt bonding with both sides of the multilayer circuit board.

[0039] In an embodiment of this utility model, the hot-melt mechanism B1 includes a hot-melt bracket B11 mounted on the machine base A, and a plurality of hot-melt components B12 mounted on the hot-melt bracket B11. The hot-melt component B12 includes a telescopic cylinder B121 fixed to the hot-melt bracket B11, and a soldering tip B122 fixed to the telescopic rod of the telescopic cylinder B121. The telescopic cylinder B121 drives the soldering tip B122 to move up and down to control whether the soldering tip B122 contacts the circuit board. The heating temperature of the soldering tip B122 and the operation of the telescopic cylinder B121 can be controlled by a PLC controller.

[0040] In this embodiment of the invention, the fixture body 1 of the replaceable positioning fixture C is made of bakelite. Bakelite has excellent insulation properties, high strength, high temperature resistance, corrosion resistance, and non-absorbency, which can prevent adverse effects on the circuit board during hot melting. Each second positioning side 112 of the positioning area 11 of the fixture body 1 can be fitted with at least one reinforcing positioning pin 5, which can improve the positioning effect of the circuit board. Similarly, each first positioning side 111 of the positioning area 11 can also be fitted with at least one reinforcing positioning pin 5; in addition, if necessary, multiple reinforcing positioning pins 5 can be added to the middle area of ​​the fixture body 1 of the replaceable positioning fixture C to further improve the positioning effect. The centering positioning pin 2, the foolproof positioning pin 3, the corner positioning pin 4, and the reinforced positioning pin 5 are spring pins, which have the advantage of easy disassembly and assembly. The diameter of the centering positioning pin 2, the foolproof positioning pin 3, the corner positioning pin 4, and the reinforced positioning pin 5 can be 3.0mm, so that the diameter of the positioning holes on the circuit board corresponding to the centering positioning pin 2, the foolproof positioning pin 3, the corner positioning pin 4, and the reinforced positioning pin 5 is small, thus having little impact on the circuit board.

[0041] In an embodiment of this utility model, the replaceable positioning fixture C can be equipped with an isolation plate D placed on the upper surface of the fixture body 1. The isolation plate D is inserted and engaged with the center positioning pin 2, the foolproof positioning pin 3 and the corner positioning pin 4. The isolation plate D is used to separate the fixture body 1 and the circuit board to prevent the circuit board from sticking to the fixture body 1.

[0042] In an embodiment of this utility model, the machine base A may be equipped with a lead screw translation device A1 connected to the hot-melt support B11 of the hot-melt mechanism B1. The lead screw translation device A1 may be controlled by a PLC controller. When placing the circuit board onto the replaceable positioning fixture C or removing the circuit board from the replaceable positioning fixture C, the operator can drive the hot-melt mechanism B1 to move via the lead screw translation device A1, thus avoiding interference from the hot-melt mechanism B1 with the operator's operation. The lead screw translation device A1 may be located within the machine base A, and the table surface of the machine base A has a clearance channel A0 corresponding to the hot-melt support B11. The lead screw translation device A1 may be a linear guide rail.

[0043] In an embodiment of this utility model, the machine base A may be provided with a fixed base A2; and the lower surface of the fixture body 1 of the replaceable positioning fixture C is fitted with a plurality of mounting pins 6 that are inserted into the fixed base A2, so that the fixture body 1 and the fixed base A2 can be detachably coupled; this facilitates the replacement of the corresponding replaceable positioning fixture C according to different circuit board structures. The side of the fixture body 1 may be provided with a clearance groove 12, which is used for the operator's fingers to insert, making it easy for the operator to remove the fixture body 1 from the fixed base A2.

[0044] In an embodiment of this utility model, the circuit board hot melt machine further includes a pressure plate E, which is engaged with the centering positioning pin 2, the foolproof positioning pin 3, and the corner positioning pin 4. When the operator places the multi-layer circuit board to be hot melted onto the replaceable positioning fixture C, the operator then engages the pressure plate E with the centering positioning pin 2, the foolproof positioning pin 3, and the corner positioning pin 4, so that the pressure plate E presses down on each layer of the circuit board to prevent the edges of the circuit board from lifting, further ensuring the accuracy of the hot melt. The pressure plate E corresponds to the hot melt mechanism B1 of the hot melt device B, each soldering tip B122 having a hot melt clearance opening E1, ensuring that the soldering tip B122 can contact the circuit board.

[0045] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A circuit board hot melting machine, comprising a machine table, and a hot melting device and a replaceable positioning jig installed on the machine table; characterized in that: The replaceable positioning jig comprises a jig body, at least two centering positioning pins, at least one fool-proof positioning pin, and four corner positioning pins; the upper surface of the jig body has a rectangular positioning area with two opposite first positioning sides and two opposite second positioning sides; each corner of the positioning area is provided with a corner positioning pin, each first positioning side of the positioning area is provided with at least one centering positioning pin, and at least one of the two first positioning sides of the positioning area is provided with a fool-proof positioning pin.

2. The circuit board thermal fusing machine of claim 1, wherein: The material of the jig body is bakelite.

3. The circuit board thermal fusing machine of claim 1, wherein: Each second positioning side of the positioning area is provided with at least one reinforcing positioning pin, and / or each first positioning side of the positioning area is provided with at least one reinforcing positioning pin.

4. The circuit board thermal fusing machine of claim 3, wherein: The centering positioning pin, the fool-proof positioning pin, the corner positioning pin, and the reinforcing positioning pin are spring pins.

5. The circuit board thermal fusing machine of claim 1, wherein: The hot melting device comprises at least one hot melting mechanism; the hot melting mechanism comprises a hot melting support mounted on a machine table and a plurality of hot melting components mounted on the hot melting support; the hot melting component comprises a telescopic cylinder fixedly connected to the hot melting support and a soldering iron head fixed to the telescopic rod of the telescopic cylinder.

6. The circuit board thermal fusing machine of claim 5, wherein: The machine table is provided with a screw rod translation device connected to the hot melting support of the hot melting mechanism.

7. The circuit board thermal fusing machine of claim 1, wherein: The machine table is provided with a fixed seat; the lower surface of the jig body of the replaceable positioning jig is provided with a plurality of mounting pins inserted and matched with the fixed seat; the side surface of the jig body is provided with a recess.

8. The circuit board thermal fusing machine of claim 1, wherein: The replaceable positioning jig is provided with an isolation plate placed on the upper surface of the jig body; the isolation plate is inserted and matched with the centering positioning pin, the fool-proof positioning pin, and the corner positioning pin.

9. The circuit board thermal fusing machine of claim 1 or 8, wherein: The replaceable positioning jig is provided with a pressing plate; the pressing plate is inserted and matched with the centering positioning pin, the fool-proof positioning pin, and the corner positioning pin.

10. The circuit board thermal fusing machine of claim 9, wherein: The pressing plate is provided with a hot melting recess corresponding to the hot melting device.

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