PCB press temperature testing device

Abstract

The utility model relates to a PCB press temperature testing device, which belongs to the technical field of PCB press temperature testing and comprises a base, support legs are fixed on the periphery of the lower end of the base, non-slip mats are fixed at the lower ends of the support legs, and a temperature measuring component is arranged at the top end of the base. The temperature measuring assembly comprises a multi-channel temperature measuring device fixed to the front end of the base, nine temperature measuring lines fixed to the interior of the top end of the base, and a plurality of pieces of kraft paper placed at the top end of the base. The temperature testing device for the PCB press can test the uniformity of the temperature of the press, can reduce the phenomena that the temperature difference between the inner layer and the outer layer of a PCB in a press-fit carrying disc is increased, resin flows inconsistently and the like due to non-uniform heating in the PCB press-fit process, and can tidy multiple pieces of stacked kraft paper, so that the multiple pieces of kraft paper can be tidily stacked, and the yield of the kraft paper is improved. And the stacked kraft paper can be pushed to the middle part of the top end of the base, so that the nine temperature measuring lines can be accurately and uniformly positioned at the lower end of the kraft paper respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB press temperature testing, and specifically relates to a PCB press temperature testing device. Background Technique

[0002] PCB, also known as printed circuit board, refers to a printed board formed with inter-point connections and printed components on a general substrate. It is a support for electronic components and a carrier for the electrical interconnection of electronic components.

[0003] In the PCB manufacturing process, lamination is a key process, and the press is the key equipment in the key process. The quality of material curing and board thickness uniformity in the quality of laminated PCB products mainly depends on the uniformity control of the press temperature. During the lamination process, due to the poor temperature uniformity of the press, the uneven heating of materials will cause the temperature difference between the inner and outer layers of the PCB in the lamination carrier to increase, the resin flow to be inconsistent, there will be a time difference in the resin curing inside and at the edge of the board, and the air bubbles at the board corner positions cannot be removed in time. In mild cases, there will be uneven board thickness, and in severe cases, there will be reliability problems such as board corner bubble white spots and lamination holes. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a PCB press temperature testing device, which has the advantages of being convenient for testing and solves the problem of inconvenient testing.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A PCB press temperature testing device includes a base. Four sides of the lower end of the base are fixedly provided with supporting feet, and anti-slip pads are fixedly provided at the lower ends of the supporting feet. A temperature measuring component is provided at the top end of the base;

[0006] The temperature measuring component includes a multi-channel temperature detector fixedly connected to the front end of the base. The temperature measuring component further includes nine temperature measuring wires fixedly provided inside the top end of the base. The temperature measuring component further includes multiple kraft papers placed on the top end of the base. The temperature measuring component further includes two pressing plates slidably connected to the top end of the base. An L-shaped plate is slidably connected inside the two pressing plates. The temperature measuring component further includes a moving structure provided at the lower ends of the two pressing plates. The temperature measuring component further includes a telescopic structure provided inside the pressing plates.

[0007] Further, nine through holes are opened at both the upper and lower ends of the base, the temperature measuring wires are fixedly provided inside the through holes, and the other ends of the temperature measuring wires are connected to the multi-channel temperature detector.

[0008] Further, the moving structure includes convex plates fixed to the lower ends of the two pressing plates. Two push rods are hinged to the opposite ends of the two convex plates. The other ends of the two groups of push rods are hinged to a moving block. A double-shaft screw rod is threadedly connected inside the moving block and the two moving blocks of the same group. A driving motor is fixed to the front end of the double-shaft screw rod on the right side.

[0009] Further, the driving motor is fixed to the front wall of the inner cavity of the base, and a transmission structure is provided on the outer surfaces of the two double-shaft screw rods.

[0010] Further, threaded holes for the double-shaft screw rod to penetrate through their interiors are provided on the opposite sides of the front and rear moving blocks, and two sliding holes for the convex plates to penetrate through their interiors are provided at the top end of the base.

[0011] Further, the telescopic structure includes a rotary motor fixed to the top end of the pressing plate. A worm is fixed to the output end of the rotary motor. A worm gear is meshed with the right side of the worm. A double-shaft screw rod is fixed to the inner side of the worm gear.

[0012] Further, threaded grooves for the double-shaft screw rod to penetrate into their interiors are provided on the opposite sides of the front and rear L-shaped plates.

[0013] Further, support blocks are fixed to the left and right walls of the inner cavity of the L-shaped plate, and sliding grooves are provided on the left and right walls of the inner cavity of the pressing plate. The support blocks are slidably connected inside the sliding grooves.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] In this PCB press temperature testing device, by providing a temperature measuring component, the uniformity of the press temperature can be tested, which can reduce the phenomena such as the increase in the temperature difference between the inner and outer layers of the PCB in the press tray and the inconsistent resin flow caused by uneven heating during the PCB pressing process, and can align multiple stacked kraft papers, so that multiple kraft papers can be neatly stacked, and the stacked kraft papers can also be pushed towards the middle of the top end of the base, so that the nine temperature measuring lines can be accurately and evenly located at the lower ends of the kraft papers respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a schematic structural view of the base and the temperature measuring lines of the present utility model;

[0018] Figure 3 is a schematic structural view of the temperature measuring lines and the kraft papers of the present utility model;

[0019] Figure 4 is a schematic top view structural view of the moving structure of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of the telescopic structure of the present utility model.

[0021] In the figure: 1 base, 2 supporting feet, 3 anti-slip pads, 41 multi-channel temperature detector, 42 temperature measurement wire, 43 kraft paper, 44 pressing plate, 45 L-shaped plate, 46 convex plate, 47 push rod, 48 moving block, 49 double-shaft screw, 410 driving motor, 411 transmission structure, 412 double-shaft screw rod, 413 worm gear, 414 worm, 415 rotating motor. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 , a PCB press temperature testing device in this embodiment includes a base 1. Supporting feet 2 are fixedly arranged around the lower end of the base 1, anti-slip pads 3 are fixedly arranged at the lower ends of the supporting feet 2, and a temperature measurement component is arranged at the top end of the base 1.

[0024] Please refer to Figures 1 to 5 , the temperature measurement component in this embodiment includes a multi-channel temperature detector 41 fixedly arranged at the front end of the base 1. The temperature measurement component further includes nine temperature measurement wires 42 fixedly arranged inside the top end of the base 1. The temperature measurement component further includes multiple kraft papers 43 placed at the top end of the base 1. The temperature measurement component further includes two pressing plates 44 sliding on the top end of the base 1. An L-shaped plate 45 is slidably connected inside the two pressing plates 44. The temperature measurement component further includes a moving structure arranged at the lower ends of the two pressing plates 44. The temperature measurement component further includes a telescopic structure arranged inside the pressing plates 44.

[0025] Among them, nine through holes are formed at both the upper and lower ends of the base 1. The temperature measurement wires 42 are fixedly arranged inside the through holes, and the other ends of the temperature measurement wires 42 are connected to the multi-channel temperature detector 41, so that the temperature measurement wires 42 can contact the kraft paper 43 and can also be connected to the multi-channel temperature detector 41.

[0026] Please refer to Figure 1 and Figure 4, in this embodiment, the moving structure includes convex plates 46 fixed to the lower ends of two abutting plates 44. Two push rods 47 are hinged to the opposite ends of the two convex plates 46. The other ends of the two groups of push rods 47 are hinged to a moving block 48. Inside the moving block 48 and the two moving blocks 48 of the same group, a double-shaft screw 49 is threadedly connected. The rear ends of the two double-shaft screws 49 are rotationally connected to the rear wall of the inner cavity of the base 1, and the front end of the left double-shaft screw 49 is rotationally connected to the front wall of the inner cavity of the base 1 through a bearing. The front end of the right double-shaft screw 49 is fixed with a driving motor 410.

[0027] At the same time, the driving motor 410 is fixed to the front wall of the inner cavity of the base 1. A transmission structure 411 is provided on the outer surfaces of the two double-shaft screws 49, so that the right double-shaft screw 49 can drive the other double-shaft screw 49 to rotate through the transmission structure 411.

[0028] Moreover, threaded holes for the double-shaft screw 49 to penetrate through their interiors are provided on the opposite sides of the front and rear moving blocks 48, so as to be able to drive the moving blocks 48 to move. Two sliding holes for the convex plates 46 to penetrate through their interiors are provided at the top of the base 1, so that the convex plates 46 can be connected to the abutting plates 44.

[0029] Please refer to Figure 1 and Figure 5 , in this embodiment, the telescopic structure includes a rotary motor 415 fixed to the top of the abutting plate 44. A worm 414 is fixed to the output end of the rotary motor 415. A connecting hole is provided at the top of the abutting plate 44, so that the rotary motor 415 can be connected to the worm 414 through the connecting hole, enabling the worm 414 to rotate within the abutting plate 44. A worm gear 413 is meshed with the right side of the worm 414. A double-shaft screw rod 412 is fixed to the inner side of the worm gear 413.

[0030] Secondly, threaded grooves for the double-shaft screw rod 412 to penetrate into their interiors are provided on the opposite sides of the front and rear L-shaped plates 45, so that the L-shaped plates 45 can be threadedly connected to the double-shaft screw rod 412, so as to be able to drive the front and rear L-shaped plates 45 to move.

[0031] In addition, support blocks are fixed to the left and right walls of the inner cavity of the L-shaped plate 45. Chute grooves are provided on the left and right walls of the inner cavity of the abutting plate 44. The support blocks are slidably connected to the inside of the chute grooves. The L-shaped plate 45 can effectively prevent it from completely moving out of the abutting plate 44 through the support blocks, and can also prevent the double-shaft screw rod 412 from driving it to rotate.

[0032] It should be noted that the multi-channel temperature detector 41, the temperature measuring line 42, the transmission structure 411 and the electronic components appearing in the text are all commonly known to the public in the prior art, and the control method is controlled by the control end, which is commonly known to the public in the prior art, and the existing power connection technology and power supply are also common knowledge in this field. Those skilled in the art can simply program and implement them, so the working principle, circuit connection and control method are not elaborated in this article.

[0033] The working principle of the above embodiment is:

[0034] When in use, the hot pressing mold is stacked on 5 to 10 sheets of kraft paper 43 in an opposite direction, and the parameters of the press are set, the temperature is set to 180°C, the pressure is set to 100PS I, and the time is set to 10 minutes. The base 1 is placed on the press, and the press is pressed on the hot pressing mold. The nine temperature measuring wires 42 pass through the kraft paper 43 to measure the temperature of the hot pressing mold and transmit it to the multi-channel temperature sensor 41, so that the temperature of the press can be uniformly tested. When the measured temperature and the set temperature value are controlled within ±5°C, the difference between the temperature points of the hot plate is controlled within ±3°C. If the test fails, the maintenance personnel should be notified for correction. After the temperature is corrected, it can be used only after the retest is qualified.

[0035] When multiple sheets of kraft paper 43 are stacked on the base 1, the driving motor 410 drives the double-axis screw 49 on one side to rotate, and drives the double-axis screw 49 on the other side to rotate through the transmission structure 411, so that the two double-axis screws 49 can drive the two sets of shifting blocks 48 to move relative to each other, and the front and rear sets of shifting blocks 48 can push the two convex plates 46 to move relative to each other through the two sets of push rods 47, so that the convex plates 46 can drive the two abutment plates 44 to move, so that the two abutment plates 44 can align the left and right sides of the stacked multiple sheets of kraft paper 43 and push the multiple sheets of kraft paper 43 toward the middle of the base 1;

[0036] At the same time, the two rotating motors 415 drive the two worms 414 to rotate, so that the worms 414 engage with the worm gear 413, and the two worm gears 413 drive the two double-axis screw rods 412 to rotate. The two double-axis screw rods 412 are threadedly connected to the thread grooves of the two groups of L-shaped plates 45, thereby driving the front and rear groups of L-shaped plates 45 to move relative to each other, so that the two groups of L-shaped plates 45 can align the front and rear sides of multiple sheets of kraft paper 43, and at the same time push them toward the middle of the top forehead of the base 1, so that multiple sheets of kraft paper 43 can be accurately located at the top of the nine temperature measuring lines 42.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB press temperature testing device, comprising a base (1), characterized in that: Support legs (2) are fixed around the lower end of the base (1), anti-slip pads (3) are fixed at the lower ends of the support legs (2), and a temperature measuring component is provided at the top end of the base (1); The temperature measuring component includes a multi-channel temperature measuring device (41) fixed to the front end of the base (1), the temperature measuring component also includes nine temperature measuring wires (42) fixed to the inside of the top of the base (1), the temperature measuring component also includes a plurality of kraft papers (43) placed on the top of the base (1), the temperature measuring component also includes two abutment plates (44) sliding with the top of the base (1), the two abutment plates (44) are internally connected to an L-shaped plate (45) for sliding, the temperature measuring component also includes a movable structure arranged at the lower ends of the two abutment plates (44), and the temperature measuring component also includes a telescopic structure arranged in the abutment plates (44).

2. A PCB press temperature testing device according to claim 1, characterized in that: Nine through holes are provided at both upper and lower ends of the base (1); the temperature measuring wire (42) is fixed inside the through hole; and the other end of the temperature measuring wire (42) is connected to the multi-channel temperature detector (41).

3. A PCB press temperature testing device according to claim 1, characterized in that: The movable structure comprises a convex plate (46) fixed to the lower ends of the two abutment plates (44); two push rods (47) are hingedly connected to the opposite ends of the two convex plates (46); the other ends of the two groups of push rods (47) are hingedly connected to a moving block (48); the internal threads of the moving blocks (48) and the two moving blocks (48) in the same group are connected to a double-axis screw (49); and a driving motor (410) is fixed to the front end of the double-axis screw (49) on the right side.

4. A PCB press temperature testing device according to claim 3, characterized in that: The driving motor (410) is fixed to the front wall of the inner cavity of the base (1), and the outer surfaces of the two biaxial screws (49) are provided with a transmission structure (411).

5. The PCB press temperature testing device according to claim 3, characterized in that: The opposite sides of the front and rear shift blocks (48) are each provided with a threaded hole for allowing the biaxial screw (49) to pass through the interior thereof, and the top end of the base (1) is provided with two sliding holes for allowing the convex plate (46) to pass through the interior thereof.

6. A PCB press temperature testing device according to claim 1, characterized in that: The telescopic structure comprises a rotary motor (415) fixed to the top end of the abutment plate (44); a worm (414) is fixed to the output end of the rotary motor (415); a worm wheel (413) is meshed on the right side of the worm (414); and a double-axis screw rod (412) is fixed on the inner side of the worm wheel (413).

7. A PCB press temperature testing device according to claim 6, characterized in that: The two opposite sides of the front and rear L-shaped plates (45) are each provided with a thread groove for allowing the double-axis screw rod (412) to penetrate therein.

8. The PCB press temperature testing device according to claim 6, characterized in that: Support blocks are fixed on both the left and right walls of the inner cavity of the L-shaped plate (45), and sliding grooves are opened on both the left and right walls of the inner cavity of the abutment plate (44), and the support blocks are slidably connected to the inside of the sliding grooves.

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