Novel vacuum pressing airbag damage detection device and detection method

Abstract

The invention provides a novel vacuum press-fit airbag damage detection device and method, the detection device comprises a vacuum press-fit template group, a pressure measuring device and a PLC, the vacuum press-fit template group comprises an upper press-fit template and a lower press-fit template, the upper press-fit template comprises a rubber plate fixing plate, an airbag fixing plate and a vacuum airbag, and the lower press-fit template comprises a rubber plate fixing plate, an airbag fixing plate and a vacuum airbag. The vacuum air bag is fixed on the lower surface of the rubber plate fixing plate through the air bag fixing plate; the pressure measuring device is used for measuring the pressure in the vacuum air bag and is connected with the PLC; the lower pressing template comprises a lower hot plate, and an air bag detection plate, a detection cover plate and a burning iron plate which are sequentially arranged in the lower hot plate from bottom to top, the detection cover plate and the burning iron plate are detachably arranged in the lower hot plate, and during detection, the burning iron plate and the detection cover plate are detached; the upper surface of the air bag detection plate is an uneven surface.

Description

Technical Field

[0001] The present invention relates to the field of vacuum pressing technology, and in particular to a novel vacuum pressing airbag damage detection device and detection method. Background Art

[0002] After the surface of the substrate of the flexible circuit board is covered with an insulating film or reinforcing auxiliary materials, a fast vacuum pressing machine is required to perform heating and pressurization operations so that the insulating film or reinforcing auxiliary materials on its surface can be fully and tightly bonded to the substrate to avoid the formation of bubbles or other defects that cause scrap. However, during the operation of the vacuum pressing machine, there is a situation where the airbag is damaged but it still operates normally without issuing an abnormal alarm, which leads to defects or scrap of the pressed product. For this reason, the market is in urgent need of a new vacuum pressing airbag damage detection device to solve the problem that when the airbag is damaged, the vacuum pressing machine can quickly issue an alarm signal. Summary of the invention

[0003] To solve the above technical problems, an embodiment of the present invention provides a new type of vacuum pressing airbag damage detection device, including a vacuum pressing template group, a pressure measuring device and a PLC, the vacuum pressing template group includes an upper pressing template and a lower pressing template, the upper pressing template includes a rubber plate fixing plate, an airbag fixing plate and a vacuum airbag, the vacuum airbag is fixed to the lower surface of the rubber plate fixing plate through the airbag fixing plate; the pressure measuring device is used to measure the pressure in the vacuum airbag and is connected to the PLC; the lower pressing template includes a lower hot plate and an airbag detection plate, a detection cover plate and a burning iron plate arranged in the lower hot plate from bottom to top, the detection cover plate and the burning iron plate are both detachable and arranged in the lower hot plate, and the burning iron plate and the detection cover plate are removed during detection; the upper surface of the airbag detection plate is uneven.

[0004] Optionally, a plurality of detection pins are disposed at intervals on the upper surface of the airbag detection plate, and the uneven surface is formed between the plurality of detection pins and the upper surface of the airbag detection plate.

[0005] Optionally, the new vacuum pressed airbag damage detection device further includes a detection connecting rod, a first detection hole is provided on the rubber plate fixing plate, a second detection hole connected to the first detection hole is provided on the airbag fixing plate, and the second detection hole is connected to the interior of the vacuum air bag; the detection connecting rod is a hollow tubular structure, the first end of the detection connecting rod is connected to the interior of the vacuum air bag through the first detection hole and the second detection hole in sequence, and the second end of the detection connecting rod is connected to the pressure measuring device.

[0006] Optionally, the first end of the detection connecting rod is inserted into the first detection hole and the second detection hole in sequence, and the detection connecting rod is sealed and connected to the first detection hole and the second detection hole respectively through a sealing ring.

[0007] Optionally, the rubber plate fixing plate is also provided with a first inflation hole, which is connected to the air source through an air pressure pipeline; the airbag fixing plate is provided with a second inflation hole connected to the first inflation hole, and the second inflation hole is connected to the interior of the vacuum air bag; during detection, the air source inflates the vacuum air bag at low pressure.

[0008] Optionally, the first inflation hole and the first detection hole are arranged diagonally, and the second inflation hole and the second detection hole are arranged diagonally.

[0009] Optionally, the pressure measuring device is a pressure monitoring sensor.

[0010] Optionally, a recess is provided on the upper surface of the lower hot plate, and the airbag detection plate, the detection cover plate and the burning iron plate are arranged in the recess in sequence from bottom to top.

[0011] Another embodiment of the present invention provides a novel vacuum pressed airbag damage detection method, using the novel vacuum pressed airbag damage detection device described in the above embodiment, the detection method includes:

[0012] The burning iron plate and the detection cover plate are removed from the lower heating plate;

[0013] The upper pressing template and the lower pressing template are closed together;

[0014] Vacuuming the cavity formed by the upper pressing template and the lower pressing template after the upper pressing template and the lower pressing template are pressed together;

[0015] The vacuum air bag is inflated and pressurized at low pressure, and the vacuum air bag expands downward, and its surface is squeezed with the uneven surface of the air bag detection plate. When the vacuum air bag is damaged, the surface of the vacuum air bag is squeezed with the uneven surface of the air bag detection plate to form a wave-like curved surface, causing the rupture of the vacuum air bag to open and form air leakage; when the actual air pressure in the vacuum air bag is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms.

[0016] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0017] The present invention arranges an airbag detection plate in the lower hot plate, and the uneven surface of the airbag detection plate is squeezed against the inflated vacuum air bag, so that the surface of the vacuum bag forms a peak-and-trough curved surface due to the mutual squeezing with the uneven surface of the airbag detection plate, causing the rupture of the vacuum air bag to be in an open state, thereby forming air leakage; when the actual air pressure in the vacuum air bag is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms, thereby achieving the purpose of timely monitoring of the vacuum air bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic structural diagram of a vacuum pressing template group provided in one embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of an upper pressing template provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a lower pressing template provided by an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of an airbag detection plate and a detection cover provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0023] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0024] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The terms "on" and "above" and any variations thereof are intended to describe positional relationships and do not represent a relationship of direct contact between the objects described.

[0025] As described in the background art, vacuum pressing machines currently available on the market cannot detect whether the airbag is damaged or generate an alarm when the airbag is damaged.

[0026] To solve the above technical problems, please refer to Figures 1 to 4 The present invention provides a novel vacuum pressing airbag damage detection device, comprising a vacuum pressing template group, a pressure measuring device and a PLC, wherein the vacuum pressing template group comprises an upper pressing template 1 and a lower pressing template 2, wherein the upper pressing template 1 comprises a rubber plate fixing plate 101, an airbag fixing plate 102 and a vacuum airbag 103, wherein the vacuum airbag 103 is fixed to the lower surface of the rubber plate fixing plate 101 through the airbag fixing plate 102; the pressure measuring device is used to measure the vacuum airbag 10 3, and is connected to the PLC; the lower pressing template 2 includes a lower hot plate 204 and an airbag detection plate 203, a detection cover plate 202 and a burning iron plate 201 which are arranged in the lower hot plate 204 from bottom to top, the detection cover plate 202 and the burning iron plate 201 are both detachably arranged in the lower hot plate 204, and the burning iron plate 201 and the detection cover plate 202 are removed during detection; the upper surface of the airbag detection plate 203 is uneven.

[0027] The detection method of the airbag damage detection device includes:

[0028] Remove the burning iron plate 201 and the detection cover plate 202 from the lower heating plate 204;

[0029] The upper pressing template 1 and the lower pressing template 2 are molded together;

[0030] Vacuuming the cavity formed by the upper pressing template 1 and the lower pressing template 2 after the upper pressing template 1 and the lower pressing template 2 are pressed together;

[0031] The vacuum air bag 103 is inflated and pressurized at low pressure, and the vacuum air bag 103 expands downward, and its surface is squeezed with the uneven surface of the air bag detection plate 203. When the vacuum air bag 103 is damaged, the surface of the vacuum air bag 103 is squeezed with the uneven surface of the air bag detection plate 203 to form a wave-like curved surface, causing the rupture of the vacuum air bag 103 to open and form air leakage; when the actual air pressure in the vacuum air bag 103 is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms.

[0032] In summary, the present invention arranges an airbag detection plate 203 in the lower hot plate 204, and the uneven surface of the airbag detection plate 203 is squeezed against the inflated vacuum air bag 103, so that the surface of the vacuum air bag 103 forms a crest and trough-shaped curved surface due to the mutual squeezing with the uneven surface of the airbag detection plate 203, causing the rupture of the vacuum air bag 103 to be in an open state, thereby forming an air leak; when the actual air pressure in the vacuum air bag 103 is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms, thereby achieving the purpose of timely monitoring of the vacuum air bag 103.

[0033] In order to make the above-mentioned purposes, features and beneficial effects of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] An embodiment of the present invention provides a novel vacuum pressing airbag damage detection device, comprising a vacuum pressing template group, a pressure measuring device and a PLC, wherein the vacuum pressing template group comprises an upper pressing template 1 and a lower pressing template 2, wherein the upper pressing template 1 comprises a rubber plate fixing plate 101, an airbag fixing plate 102 and a vacuum airbag 103, wherein the vacuum airbag 103 is fixed to the lower surface of the rubber plate fixing plate 101 through the airbag fixing plate 102. The pressure measuring device is used to measure the pressure in the vacuum airbag 103 and is connected to the PLC. The lower pressing template 2 comprises a lower hot plate 204, an airbag detection plate 203, a detection cover plate 202 and a burning iron plate 201, wherein the lower hot plate 204 is located at the bottom layer, and the burning iron plate 201 is located at the top layer, and the airbag detection plate 203, the detection cover plate 202 and the burning iron plate 201 are arranged in the lower hot plate 204 in sequence from bottom to top. As an embodiment, a recess is provided on the upper surface of the lower hot plate 204, and the airbag detection plate 203, the detection cover plate 202 and the fired iron plate 201 are sequentially arranged in the recess from bottom to top, and the upper surface of the fired iron plate 201 is flush with the upper surface of the lower hot plate 204.

[0035] The detection cover plate 202 and the burning iron plate 201 can be detachably arranged in the lower heating plate 204. As for whether the airbag detection plate 203 is fixedly arranged in the lower heating plate 204 or detachably arranged in the lower heating plate 204, the present invention does not make any specific limitation on this.

[0036] During the pressing operation, the airbag detection plate 203, the detection cover plate 202 and the fired iron plate 201 are all arranged in the lower hot plate 204, and the substrate of the flexible circuit board with a covering insulating film or reinforcing auxiliary materials adhered to the surface is placed on the lower pressing template 2 for pressing operation.

[0037] The upper surface of the airbag detection plate 203 is uneven. When performing damage detection on the vacuum airbag 103, the sintered iron plate 201 and the detection cover plate 202 need to be removed from the lower hot plate 204 first, so that the uneven surface on the upper surface of the airbag detection plate 203 is exposed. Then the upper pressing template 1 and the lower pressing template 2 are molded together. After the molds are closed, a cavity is formed between the upper pressing template 1 and the lower pressing template 2, and the cavity is evacuated. When the vacuuming is completed, the vacuum air bag 103 is inflated and pressurized at low pressure, and the vacuum air bag 103 expands downward, and its surface will be squeezed with the uneven surface of the air bag detection plate 203. When the vacuum air bag 103 is damaged, the surface of the vacuum air bag 103 is squeezed with the uneven surface of the air bag detection plate 203 to form a wave-like curved surface, causing the rupture of the vacuum air bag 103 to be open, thereby forming an air leak; when the actual air pressure in the vacuum air bag 103 is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms.

[0038] In the present invention, during the damage detection operation of the vacuum air bag 103, low-pressure inflation and pressurization is used to inflate and pressurize the vacuum air bag 103. The reason is that the upper surface of the air bag detection plate 203 is an uneven surface. If high-pressure inflation and pressurization is used, the inflation speed of the vacuum air bag 103 is too fast, and the vacuum air bag 103 will explode when the uneven surface of the vacuum air bag 103 and the air bag detection plate 203 are squeezed against each other.

[0039] The present invention does not impose any specific restrictions on the formation structure of the uneven surface of the airbag detection plate 203. As an example, please refer to Figure 4 The upper surface of the airbag detection plate 203 is provided with a plurality of detection pins 20301 arranged at intervals, and the uneven surface is formed between the plurality of detection pins 20301 and the upper surface of the airbag detection plate 203. Of course, the present invention is not limited thereto, and a plurality of protrusions or grooves may be arranged at intervals on the upper surface of the airbag detection plate 203 to form the uneven surface of the airbag detection plate 203.

[0040] The present invention does not impose any specific limitation on how the pressure measuring device measures the pressure in the vacuum air bag 103 .

[0041] As an embodiment, the pressure measuring device measures the pressure in the vacuum air bag 103 by detecting the connecting rod. Figure 2The rubber plate fixing plate 101 is provided with a first detection hole 10101, the airbag fixing plate 102 is provided with a second detection hole 10201 connected with the first detection hole 10101, and the second detection hole 10201 is communicated with the interior of the vacuum air bag 103; the detection connecting rod is a hollow tubular structure, and the first end of the detection connecting rod is connected with the interior of the vacuum air bag 103 through the first detection hole 10101 and the second detection hole 10201 in turn, and the second end of the detection connecting rod is connected to the pressure measuring device, and the pressure inside the vacuum air bag 103 is detected by the pressure measuring device.

[0042] To prevent air leakage, as an embodiment, the first end of the detection connecting rod is inserted into the first detection hole 10101 and the second detection hole 10201 in sequence, and the detection connecting rod is sealed and connected to the first detection hole 10101 and the second detection hole 10201 through sealing rings respectively.

[0043] In order to prevent the detection connecting rod from deforming during the detection process and causing inaccurate detection results, as an embodiment, since the detection connecting rod is a hard tubular structure, such as a steel pipe, in order to facilitate the connection of the hard tubular structure detection connecting rod with the pressure measuring device, the second end of the detection connecting rod is connected to the pressure measuring device through a Teflon air pipe.

[0044] Since the air source needs to input gas into the vacuum air bag 103, an inflation hole connected to the vacuum air bag 103 is provided on the upper pressing template 1. Specifically, the rubber plate fixing plate 101 is also provided with a first inflation hole 10102, and the first inflation hole 10102 is connected to the air source through a pneumatic pipeline; the air bag fixing plate 102 is provided with a second inflation hole 10202 connected to the first inflation hole 10102, and the second inflation hole 10202 is connected to the inside of the vacuum air bag 103. In order to prevent gas leakage, the pneumatic pipeline is sealed and connected to the first inflation hole 10102 and the second inflation hole 10202 through an inflation sealing ring. During the pressing operation, the air source inflates the vacuum air bag 103 with high pressure; during the air bag damage detection, the air source inflates the vacuum air bag 103 with low pressure.

[0045] In order to facilitate the assembly and replacement of the rubber plate fixing plate 101 and the airbag fixing plate 102, as an embodiment, the inflation hole and the detection hole can be shared, that is, the first inflation hole 10102 is diagonally arranged with the first detection hole 10101, and the second inflation hole 10202 is diagonally arranged with the second detection hole 10201.

[0046] The pressure measuring device is a relatively mature technology in the field of pressure monitoring, so the present invention does not limit the specific type of the pressure measuring device. As an embodiment, the pressure measuring device is a pressure monitoring sensor.

[0047] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A novel vacuum pressed airbag damage detection device, characterized in that: It includes a vacuum pressing template group, a pressure measuring device and a PLC, the vacuum pressing template group includes an upper pressing template and a lower pressing template, the upper pressing template includes a rubber plate fixing plate, an airbag fixing plate and a vacuum airbag, the vacuum airbag is fixed to the lower surface of the rubber plate fixing plate through the airbag fixing plate; the pressure measuring device is used to measure the pressure in the vacuum airbag and is connected to the PLC; the lower pressing template includes a lower hot plate and an airbag detection plate, a detection cover plate and a burning iron plate arranged in the lower hot plate from bottom to top, the detection cover plate and the burning iron plate can be detachably arranged in the lower hot plate, and the burning iron plate and the detection cover plate are removed during detection; the upper surface of the airbag detection plate is uneven.

2. The novel vacuum pressed airbag damage detection device according to claim 1 is characterized in that: The upper surface of the airbag detection plate is provided with a plurality of detection pins arranged at intervals, and the uneven surface is formed between the plurality of detection pins and the upper surface of the airbag detection plate.

3. The new vacuum pressed airbag damage detection device according to claim 1 is characterized in that: It also includes a detection connecting rod, wherein a first detection hole is provided on the rubber plate fixing plate, and a second detection hole connected to the first detection hole is provided on the airbag fixing plate, and the second detection hole is connected to the interior of the vacuum air bag; the detection connecting rod is a hollow tubular structure, and the first end of the detection connecting rod is connected to the interior of the vacuum air bag through the first detection hole and the second detection hole in sequence, and the second end of the detection connecting rod is connected to the pressure measuring device.

4. The new vacuum pressed airbag damage detection device according to claim 3 is characterized in that: The first end of the detection connecting rod is inserted into the first detection hole and the second detection hole in sequence, and the detection connecting rod is sealed and connected to the first detection hole and the second detection hole through sealing rings respectively.

5. The novel vacuum pressed airbag damage detection device according to claim 1 is characterized in that: The rubber plate fixing plate is also provided with a first inflation hole, which is connected to the air source through an air pressure pipeline; the airbag fixing plate is provided with a second inflation hole connected to the first inflation hole, and the second inflation hole is connected to the interior of the vacuum air bag; during detection, the air source inflates the vacuum air bag at low pressure.

6. The novel vacuum pressed airbag damage detection device according to claim 5 is characterized in that: The first inflation hole is diagonally arranged with respect to the first detection hole, and the second inflation hole is diagonally arranged with respect to the second detection hole.

7. The novel vacuum pressed airbag damage detection device according to claim 1 is characterized in that: The pressure measuring device is a pressure monitoring sensor.

8. The novel vacuum pressed airbag damage detection device according to claim 1 is characterized in that: A recess is provided on the upper surface of the lower hot plate, and the airbag detection plate, the detection cover plate and the sintered iron plate are sequentially arranged in the recess from bottom to top.

9. A novel vacuum pressed airbag damage detection method, using the novel vacuum pressed airbag damage detection device according to any one of claims 1 to 8, characterized in that: The detection method comprises: The burning iron plate and the detection cover plate are removed from the lower heating plate; The upper pressing template and the lower pressing template are closed together; Vacuuming the cavity formed by the upper pressing template and the lower pressing template after the upper pressing template and the lower pressing template are pressed together; The vacuum air bag is inflated and pressurized at low pressure, and the vacuum air bag expands downward, and its surface is squeezed with the uneven surface of the air bag detection plate. When the vacuum air bag is damaged, the surface of the vacuum air bag is squeezed with the uneven surface of the air bag detection plate to form a wave-like curved surface, causing the rupture of the vacuum air bag to open and form air leakage; when the actual air pressure in the vacuum air bag is insufficient or lower than the air pressure setting value, the pressure measuring device feeds back the actual air pressure to the PLC, and the PLC alarms.

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