CN116117732A - Method for disassembling contact pin type sensor and lifting type disassembling tool - Google Patents
Method for disassembling contact pin type sensor and lifting type disassembling tool Download PDFInfo
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- CN116117732A CN116117732A CN202310294765.XA CN202310294765A CN116117732A CN 116117732 A CN116117732 A CN 116117732A CN 202310294765 A CN202310294765 A CN 202310294765A CN 116117732 A CN116117732 A CN 116117732A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention discloses a method and a lifting type dismounting tool for dismounting a pin type sensor, wherein a PGA socket is fixed on a PCB, and the PGA socket is connected with a pin of the pin type sensor, and the method comprises the following steps: the PCB fixing device is arranged on the surface of the PCB, so that the PCB fixing device and the PCB move synchronously, and the force applied by the PCB fixing device is distributed uniformly relative to the PCB; fixing the positions of the PCB and the PCB fixing device; a plurality of force application areas are symmetrically distributed along the periphery of the pin-type sensor, and forces for separating the pin-type sensor from the PCB board are sequentially and circularly applied to the force application areas along the fixed direction of the periphery of the pin-type sensor; the separation distance between the contact pin type sensor and the PCB at the corresponding position of the force application area each time is within a set range; and separating the pin type sensor from the PCB to obtain the pin type sensor. The invention provides a PCB fixing device and a sensor stress structural member aiming at different types of PCBs and contact pin sensors, and realizes the rapid separation of the PCBs and the sensors.
Description
Technical Field
The invention relates to the field of sensor disassembly, in particular to a disassembly method and a lifting type disassembly tool of a pin type sensor.
Background
The mainstream camera optical sensor adopts a pin type structure, and is connected with the sensor through relevant PGA sockets in the process of stacking the inside of the camera, and the camera sensor and the PGA sockets mainly depend on tight fit between the sensor pins and the clamping claws in the PGA sockets so as to ensure the stability of connection. Because of friction, there is a great connection force between the PGA socket and the multi-pin sensor. During camera assembly and repair, a disassembly process is required for the pin sensor (or "sensor"). In the face of a large connection force between the two, the separation between the sensor and the PGA socket cannot be realized by operators or related tooling equipment due to the material properties of ceramics, glass and the like of the sensor.
The method for removing the pin sensor includes: manually separating, namely stripping the pin type sensor from the PGA socket area by area or stroke by stroke; or the tool equipment is used for separation, and the contact pin is forcibly stripped from the PGA socket under the support of sufficient external force, so that the separation of the PCB and the contact pin type sensor is realized.
In summary, the prior art has the following disadvantages:
(1) Various forms exist between the sensor and the corresponding PCB, and the sensor is difficult to fix and clamp, so that the existing tool cannot be used for separating operation;
(2) The force required by the separation of the sensor is approximately 200N-600N, the PCB is made of FR-4 material, and the PCB is easy to deform under the condition of directly applying force, so that the PCB is invalid or components are damaged;
(3) The manual separation disassembly method is too dependent on experience, the disassembly mode cannot be adjusted in time in the operation process, the damage to the PCB or the contact pin is caused, and the rapid separation of the contact pin type sensor and the PCB cannot be realized.
Disclosure of Invention
According to the lifting type dismounting tool and the lifting type dismounting method, for different types of contact pin type sensors, a clamping combination and a fixing mode of a plurality of sensor stress structural members are provided, and the problem of fixing the sensors is solved. In addition, the invention is also provided with an auxiliary device for realizing the rapid separation of the pin type sensor. In order to achieve the above purpose, the present invention proposes the following technical solutions:
a method for disassembling a pin type sensor, wherein a PGA socket is fixed on a PCB, and the PGA socket is connected with a pin of the pin type sensor, comprising the following steps:
installing a PCB fixing device on the surface of the PCB, so that the PCB fixing device and the PCB synchronously move, and the force born by the PCB fixing device is uniformly distributed relative to the PCB;
fixing the positions of the PCB and the PCB fixing device, and keeping the positions unchanged;
a plurality of force application areas are symmetrically distributed along the periphery of the pin type sensor, and forces for separating the pin type sensor from the PCB board are sequentially and circularly applied to the force application areas along the fixed direction of the periphery of the pin type sensor; the separation distance between the contact pin type sensor and the PCB at the corresponding position of the force application area each time is within a set range;
and separating the pin type sensor from the PCB to obtain the detached pin type sensor.
Further, the method further comprises the following steps:
detecting the force applied by the force application areas, and judging whether the force applied by each force application area is within an experience range or not;
if the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range.
On the other hand, the invention provides a lifting type dismounting tool for a pin type sensor, which is used for executing the dismounting method of the pin type sensor, and comprises the following steps:
the bearing table is used for fixing the PCB and the PCB fixing device; the bearing table is also provided with an auxiliary device for assisting the separation operation of the PCB and the pin type sensor; the auxiliary device comprises a hot air auxiliary device and/or a vibration auxiliary device;
at least two clamping devices for clamping the side surfaces of the pin type sensor; each clamping device independently moves along the separation direction of the pin type sensor and the PCB so as to separate the pin type sensor from the PCB; the clamping devices are provided with pressure sensors;
the PCB fixing device is fixedly arranged on the surface of the PCB and is coupled with the surface of the PCB; the PCB fixing device and the PCB move synchronously, so that the separating force applied to the PCB fixing device is distributed uniformly relative to the PCB.
Further, a friction element is arranged at the contact part of the clamping device and the pin type sensor; the friction element is arranged on the inner side of the clamping device and used for increasing friction force between the pin type sensor and the clamping device.
Further, a sensor stress structural member is arranged at the contact part of the clamping device and the contact pin type sensor; the sensor stress structural member is coupled with the pin type sensor, and the sensor stress structural member is used for uniformly dispersing the separation force of the pin type sensor and the PCB, so that the force born by the sensor stress structural member is distributed uniformly relative to the pin type sensor.
Further, the PCB board fixing device includes a needle carving type fixing device, the needle carving type fixing device includes:
the PCB fixing structure is arranged on two sides of the substrate and used for fixing the position of the PCB on the substrate;
a plurality of press caps mounted inside the substrate; the pressing cap openings correspond to the threaded holes, external threads are arranged at the upper ends of the pressing caps, and are meshed with the internal threads of the threaded holes and used for pressing the lower ends of the springs and the ejector pins into the pressing caps;
the spring is arranged in the pressure cap; one end of the spring is arranged at the bottom of the pressing cap, and the other end of the spring is contacted with the thimble, so that the thimble has an elastic movable space and is assisted to contact the surface of the PCB;
the ejector pin is arranged in the press cap; the upper end of the thimble is contacted with the surface of the PCB, and the lower end of the thimble is contacted with the spring.
Further, the PCB fixing device also comprises a device clearance type fixing device;
fixing holes are formed in the periphery of the device clearance type fixing device, and screws penetrate through the fixing holes to fix the PCB and the device clearance type fixing device;
the device clearance type fixing device is provided with a component clearance characteristic, the component clearance characteristic is coupled with components of the PCB and used for protecting the components on the PCB and uniformly dispersing separation force born by the PCB.
Further, the sensor force-bearing structural member comprises a preassembled structure and a flexible material;
the flexible material is coupled with the pin-type sensor, the flexible material is provided with a multi-hole position design, and the hole position corresponds to the pin position of the pin-type sensor;
the preassembling structure is arranged below one end of the pin-free sensor, which is provided with flexible materials at two sides of the pin-free sensor; the preassembly structure is placed inside the receiving table.
Further, the sensor stress structural member further comprises a sucker and a sucker fixing structure;
one end of the sucker is arranged on one surface of the pin type sensor without a pin, and the other end of the sucker is fixedly arranged on the sucker fixing structure;
the sucker fixing structure is arranged below one end of the pin-shaped sensor, which is not provided with a pin; the sucker fixing structure is placed inside the bearing table.
In still another aspect, the invention further provides a control system for disassembling the pin type sensor, which comprises a control device and the lifting type disassembling tool;
the lifting type dismounting tool is used for executing the dismounting method;
the control device is respectively and electrically connected with the pressure sensor and the clamping device and is used for receiving the reading of the pressure sensor and controlling the movement of the clamping device.
The beneficial effects of the invention are as follows:
(1) The lifting type dismounting tool provided by the invention adopts a combined fixing mode of the clamping device and the stress structural members of various sensors, so that the problem that the pin type sensor or the PCB cannot be fixed due to the factors of structure, materials and the like is solved; meanwhile, the friction element arranged in the clamping device can not only increase the friction force between the clamping device and the clamped object (the PCB or the sensor), but also protect the clamped object;
(2) The invention provides a PCB fixing device which is fixedly arranged on the surface of a PCB and uniformly disperses the stress of the PCB. Meanwhile, according to different structures of the PCB, a device clearance type fixing device and a needle carving type fixing device are also provided, so that the PCB fixing device can fix the PCB with the largest contact area, the components of the PCB are protected as much as possible, and the PCB is prevented from being deformed due to stress in the separation process;
(3) The control system provided by the invention can ensure that the stress of the PCB and the pin type sensor is balanced in the disassembly process, and avoid the deformation of the PCB or the pin type sensor. Under the regulation and control of the control system, the disassembly process is normalized and scientific, and the disassembly of the sensor can be rapidly completed.
Drawings
FIG. 1 is a block diagram of a bi-directional lifting type disassembly tool according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the installation of a side clamping device in embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 of the present invention;
FIG. 4 is a block diagram of the device clearance type fixing apparatus in embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the installation of the needle carving type fixing device and the sensor assembly in the embodiment 1 of the invention;
FIG. 6 is an enlarged view of the invention at A of FIG. 5;
FIG. 7 is a block diagram of a support column and four corner clamping device according to embodiment 2 of the present invention;
FIG. 8 is a schematic view showing the installation of the suction cup device in embodiment 3 of the present invention;
FIG. 9 is a cross-sectional view of FIG. 8 in accordance with the present invention;
FIG. 10 is a schematic view showing the installation of a flexible material in embodiment 4 of the present invention;
fig. 11 is a sectional view showing the installation of the prefabricated structural member in embodiment 4 of the present invention.
In the figure: 1-a PCB board; 101-PGA socket; 2-pin type sensor; 201-a pin; 3-device clearance type fixing device; 301-component clearance features; 302-fixing holes; 303-PCB board contact; 304-side; 4-needle carving type fixing device; 401-a substrate; 40101-threaded bore; 402-pressing the cap; 403-spring; 404-thimble; 5-a base; 6-a receiving table; 7-a first guide rail; 8-a first slider; 9-a second guide rail; 10-a second slider; 11-a lead screw hand wheel; 12-a screw rod supporting seat; 1201-bearings; 13-a lead screw nut; 14-positive and negative tooth screw rods; 15-connecting piece; 16-a suction cup device; 1601-vacuum sponge suction cup; 1602-a suction cup securing structure; 17-preassembled structure; 1701-a flexible material; 1702-pre-assembled structure; 18-side clamping means; 19-four corner clamping devices; 20-friction element; 21-auxiliary device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
A method for disassembling a pin-type sensor 2, wherein a PGA socket 101 is fixed on a PCB board 1, the PGA socket 101 is connected with a pin 201 of the pin-type sensor 2, comprising:
the PCB fixing device is arranged on the surface of the PCB 1, so that the PCB fixing device and the PCB 1 synchronously move, and the force born by the PCB fixing device is uniformly distributed relative to the PCB 1;
fixing the positions of the PCB 1 and the PCB fixing device, and keeping the positions unchanged;
a plurality of force application areas are symmetrically distributed along the periphery of the pin-type sensor 2, and forces for separating the pin-type sensor 2 from the PCB 1 are sequentially and circularly applied to the force application areas along the fixed direction of the periphery of the pin-type sensor 2; the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position each time is within a set range;
and the pin type sensor 2 is separated from the PCB 1, so that the detached pin type sensor 2 is obtained.
Further comprises: detecting the force applied by the force application areas, and judging whether the force applied by each force application area is within an experience range or not;
if the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range.
The invention provides a lifting type disassembly tool for executing the disassembly method, which comprises the following steps: the receiving table 6 is used for fixing the PCB 1 and the PCB fixing device. The bearing table 6 is also provided with an auxiliary device 21 for assisting the separation operation of the PCB 1 and the pin type sensor 2; the auxiliary device 21 comprises a hot air auxiliary device and/or a vibration auxiliary device. At least two clamping devices for clamping the side surfaces of the pin type sensor 2; each clamping device independently moves along the separation direction of the pin type sensor 2 and the PCB 1 so as to separate the pin type sensor 2 from the PCB 1; the clamping devices are provided with pressure sensors. The PCB fixing device is fixedly arranged on the surface of the PCB 1 and is coupled with the surface of the PCB 1; the PCB fixing device and the PCB 1 synchronously move, so that the separating force applied to the PCB fixing device is distributed uniformly relative to the PCB 1.
A friction element 20 is arranged at the contact part of the clamping device and the pin type sensor 2; the friction element 20 is mounted inside the clamping device for increasing the friction between the pin sensor 2 and the clamping device. The contact part of the clamping device and the contact pin type sensor 2 is also provided with a sensor stress structural member; the sensor stress structural member is coupled with the pin type sensor 2, and the sensor stress structural member is used for uniformly dispersing the separation force of the pin type sensor 2 and the PCB 1, so that the force born by the sensor stress structural member is distributed uniformly relative to the pin type sensor 2.
Example 1
As shown in fig. 1, a receiving table 6 is fixedly installed in the middle of the base 5, and the receiving table 6 is used for fixing the PCB 1 and the PCB fixing device. The bearing table 6 is also provided with an auxiliary device 21 for assisting in disassembling the PCB 1 and the pin type sensor 2; the auxiliary device 21 comprises a hot air auxiliary device and/or a vibration auxiliary device. The number of auxiliary devices 21 can be increased or decreased according to actual requirements. The mounting position of the auxiliary device 21 can be adjusted according to actual requirements, and the auxiliary device can be mounted on the side surface of the carrying table 6, and can also be combined with the clamping device or the second guide rail 9.
The base 5 is symmetrically provided with the first guide rail 7 and the second guide rail 9 on both sides, the first guide rail 7 is symmetrically provided with two first sliding blocks 8 along the bearing table 6, and the first sliding blocks 8 horizontally move along the first guide rail 7. The second guide rail 9 is fixedly arranged on the inner side of the first guide rail 7, and the second guide rail 9 is symmetrically distributed around the bearing table 6; and a second sliding block 10 is arranged on the second guide rail 9, and the second sliding block 10 moves up and down along the second guide rail 9, so that the PCB 1 is separated from the pin type sensor 2. The second sliding block 10 is connected with the first sliding block 8 through a connecting piece 15, and the first sliding block 8 moves horizontally along the first guide rail 7 to drive the second sliding block 10 to move up and down along the second guide rail 9.
As shown in fig. 2 and 3, a side clamping device 18 is installed inside the two symmetrically arranged second sliders 10, and the side clamping device 18 clamps the side of the pin type sensor 2. The two symmetrically arranged second sliding blocks 10 drive one side clamping device 18 to move along the separation direction of the PCB 1 and the pin type sensor 2, so that the PCB 1 is separated from the pin type sensor 2. The side clamps 18 are each provided with a pressure sensor for detecting a separation force acting during the separation of the side clamps 18. The side clamping device 18 is provided with a friction element 20 at the contact point with the pin sensor 2, and the friction element 20 is used for increasing the friction force between the pin sensor and the side clamping device 18.
The pin type sensor 2 and the PCB board 1 realize separate transmission modes and can be structured by levers, lead screws, cams, gears and the like. The synchronous movement of the side clamping device 18 is realized by adopting the front and back thread screw 14 in the embodiment, and the synchronous movement of the front and back thread screw 14 is realized by matching transmission arrangement. As shown in fig. 1, the transmission device comprises a screw hand wheel 11, a positive and negative tooth screw 14, a screw nut 13 and a screw supporting seat 12.
The screw hand wheel 11 is arranged on the outer side of the screw supporting seat 12 and drives the positive and negative tooth screw 14 to rotate. The number of the screw handwheels 11 can be adjusted according to actual needs; the screw hand wheel 11 can be set to be manually controlled, electrically controlled or controlled in other modes according to actual conditions. The screw rod supporting seats 12 are arranged at two ends of the front and back tooth screw rods 14 in the horizontal direction; a bearing 1201 for supporting and fixing the positive and negative thread screw 14 is arranged in the screw rod supporting seat 12, and an inner hole of the bearing 1201 is tightly matched with the outer circle of the positive and negative thread screw 14. The screw nut 13 is fixedly arranged between the first sliding blocks 8 and drives the first sliding blocks 8 to synchronously move along the horizontal direction of the first guide rail 7; a front and back thread screw 14 is arranged in the screw nut 13. The setting direction of the front and back tooth screw 14 is consistent with that of the first guide rail 7; the front and back tooth screw lead screw 14 rotates to drive the lead screw nut 13 to horizontally move. The forward and reverse feed screw 14 rotates, and the movement directions of the two feed screw nuts 13 can be set to be opposite or reverse.
The PCB fixing device is fixedly arranged on the surface of the PCB 1 and is coupled with the surface of the PCB 1; the PCB fixing device and the PCB 1 synchronously move, so that the separating force applied to the PCB fixing device is distributed uniformly relative to the PCB 1. The PCB board fixing device provided in this embodiment includes a device clearance type fixing device 3 as shown in fig. 4, where the device clearance type fixing device 3 may be mounted on any surface of the PCB board 1.
The size of the device clearance type fixing device 3 is larger than that of the PCB 1 to be separated, fixing holes 302 are formed in the periphery of the device clearance type fixing device 3, and the fixing holes 302 are matched with screws and used for fixing the PCB 1 and the device clearance type fixing device 3. The device clearance type fixing device 3 is provided with a component clearance feature 301, the component clearance feature 301 is used for protecting components on the PCB 1, and the contact area between the PCB contact portion 303 and the PCB 1 of the device clearance type fixing device 3 is increased as much as possible through the design of an opening hole, so that the PCB 1 is prevented from being deformed due to stress. The side 304 of the device clearance type fixing device 3 arranged on the periphery of the outside is matched with the contact position of the clamping device. Referring to fig. 1, the device clearance type fixing device 3 may be coupled to either side of the PCB 1, and the PCB 1 and the device clearance type fixing device 3 are fixedly installed using screws.
The present embodiment also provides a PCB board fixing apparatus including a needle carving type fixing apparatus 4 as shown in fig. 5 and 6. The needle carving type fixing device 4 comprises a base plate 401, a pressing cap 402, a thimble 404 and a spring 403. The two sides of the substrate 401 are provided with PCB fixing structures for fixing the position of the PCB 1 on the needle carving type fixing device 4; the surface of the substrate 401 is distributed with a plurality of array threaded holes 40101. The inside of base plate 401 is equipped with a plurality of pressure caps 402, the pressure cap 402 opening all corresponds with screw hole 40101, and pressure cap 402 upper end is equipped with the external screw thread, the internal screw thread meshing of external screw thread and screw hole 40101 is used for pressing spring 403 and thimble lower extreme into the pressure cap 402 is inside. A spring 403 and a thimble 404 are arranged in the press cap 402; one end of the spring 403 is arranged at the bottom of the press cap 402, and the other end is contacted with the thimble 404; the springs 403 make the ejector pins 404 have elastic moving spaces, and the ejector pins 404 are assisted to contact the PCB board 1. The lower end of the thimble 404 is contacted with the spring 403, and the upper end of the thimble 404 is contacted with the surface of the PCB 1.
As shown in fig. 5, the external thread of the press cap 402 is meshed with the internal thread of the needle carving type fixing device 4, the spring 403 and the lower end of the ejector pin 404 are pressed into the cavity, the ejector pin 404 moves elastically and in a movable space, and the surface components of different PCB boards 1 can be stressed, so that the whole stress of the PCB boards 1 is more uniform.
Based on the lifting type disassembly tool, the disassembly method applicable to the embodiment is as follows:
the PCB fixing device (the device clearance device 3 or the needle carving type fixing device 4 is selected according to the structure of the PCB 1) is fixedly arranged on the surface of the PCB 1, the PCB 1 to be separated and the contact pin type sensor 2 are placed on the bearing table 6, and the PCB 1 and the PCB fixing device are fixed on the bearing table 6.
The pin-type sensor 2 is clamped and fixed by the side clamping device 18, so that the fixing sites of the side clamping device 18 on the side surface of the pin-type sensor 2 are all the force application areas of the pin-type sensor 2. The two side clamping devices 18 are driven by the transmission device to sequentially move in the same direction, and force for separating the pin type sensor 2 from the PCB 1 is sequentially and circularly applied to the side surfaces of the pin type sensor 2, so that the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position each time is within a set range. The setting range is summarized according to experience of the separation distance between the PCB 1 and the pin type sensor 2 under different stress conditions of the pin type sensor 2.
The motion process of the transmission device driving the side clamping device 18 is as follows: the screw hand wheel 11 is rotated, the front and back tooth screw 14 rotates along with the rotation, and the screw nuts 13 on the two sides convert the rotation into movement to drive the first sliding blocks 8 on the two sides of the screw nuts 13 to move in the same direction. In the moving process of the first sliding block 8 along the first guide rail 7 to the direction far away from the bearing table 6, the second sliding block 10 is driven to move along the second guide rail 9 through the connecting piece 15, and the second sliding block 10 drives the side clamping device 18 and the pin type sensor 2 to synchronously move in the same direction.
Detecting the force applied to the force application areas by using a pressure sensor arranged on the side clamping device 18, and judging whether the force applied to each force application area is in an empirical range or not; the experience range is a range of values of the force zone summarized according to the removal experience of each model of the pin sensor 2.
If the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range. And continuing the circulation operation, and separating the pin type sensor 2 from the PCB 1 to obtain the detached pin type sensor 2.
In this embodiment, the clamping object of the side clamping device 18 only takes the pin type sensor 2 as an example, and the pin type sensor 2 can be fixed on the receiving table 6, and the side clamping device 18 clamps the PCB fixing device to perform lifting operation, so as to separate the PCB 1 from the pin type sensor 2. In this embodiment, the moving direction of the side clamping device 18 driving the separation process of the pin sensor 2 may be set to move up or down along the second guide rail 9, and may be specifically changed according to practical situations.
Example 2
In this embodiment, on the basis of embodiment 1, the side clamping device 18 between two symmetrical second sliders 10 is replaced by a four-corner clamping device 19, which is provided inside each second slider 10, as shown in fig. 7. By clamping the four corners of the pin-type sensor 2, a force for separating the pin-type sensor 2 from the PCB 1 is sequentially applied to the periphery of the pin-type sensor 2, so that the separation of the PCB 1 and the pin-type sensor 2 is realized.
The disassembly method of the pin sensor 2 proposed based on the present embodiment is as follows:
the PCB fixing device (the device clearance device 3 or the needle carving type fixing device 4 is selected according to the structure of the PCB 1) is fixedly arranged on the surface of the PCB 1, the PCB 1 to be separated and the contact pin type sensor 2 are placed on the bearing table 6, and the PCB 1 and the PCB fixing device are fixed on the bearing table 6.
The pin type sensor 2 is clamped and fixed by the four-corner clamping device 19, so that fixing sites of the four-corner clamping device 19 around the pin type sensor 2 are all the force application areas of the pin type sensor 2. The four corner clamping devices 19 are driven by the transmission device to sequentially move downwards clockwise, and forces for separating the pin type sensor 2 from the PCB 1 are sequentially applied to the periphery of the pin type sensor 2, so that the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position each time is within a set range. The setting range is summarized according to experience of the separation distance between the PCB 1 and the pin type sensor 2 under different stress conditions of the pin type sensor.
The motion process of the transmission device driving the four-corner clamping device 19 is as follows: the screw hand wheel 11 is rotated, the front and back tooth screw 14 rotates along with the rotation, and the screw nuts 13 on the two sides convert the rotation into movement to drive the first sliding blocks 8 on the two sides of the screw nuts 13 to move in the same direction. In the moving process of the first sliding block 8 along the first guide rail 7 to the direction far away from the bearing table 6, the second sliding block 10 is driven to move along the second guide rail 9 through the connecting piece 15, and the second sliding block 10 drives the four-corner clamping device 19 and the contact pin type sensor 2 to synchronously move in the same direction.
Detecting the force applied to the force application areas by using pressure sensors arranged on the four-corner clamping devices 19, and judging whether the force applied to each force application area is in an empirical range or not; the experience range is a range of values of the force zone summarized according to the removal experience of each model of the pin sensor 2.
If the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range. And continuing the circulation operation, and separating the pin type sensor 2 from the PCB 1 to obtain the detached pin type sensor 2.
In this embodiment, the clamping object of the four-corner clamping device 19 only takes the pin type sensor 2 as an example, and the pin type sensor 2 can be fixed on the bearing table 6, and the four-corner clamping device 19 clamps the PCB fixing device to perform lifting operation, so as to separate the PCB 1 from the pin type sensor 2. In this embodiment, the moving direction of the four-corner clamping device 19 driving the pin sensor 2 to separate may be set to move up or down along the second guide rail 9, and may be specifically changed according to practical situations.
The disassembly method of the embodiment is to convert the cyclic lifting at two sides into cyclic lifting at four corners; in this embodiment, when judging the problematic clamping area, the method is more clear, and is simpler than the whole-side adjustment of the pin-type sensor 2 in embodiment 1, and is more beneficial to balancing the stress of the pin-type sensor 2 by directly adjusting different stress points of the pin-type sensor 2.
Example 3
On the basis of the above embodiment, when the side or the periphery of the pin sensor 2 is not easy to be fixed, the present embodiment proposes a suction cup device 16 as shown in fig. 8 and 9, which includes a vacuum sponge suction cup 1601 and a suction cup fixing structure 1602. One end of the vacuum sponge sucker 1601 is mounted on one surface of the pin type sensor 2 without the pin 201, and the other end is fixedly mounted on the sucker fixing structure 1602. The suction cup fixing structure 1602 is installed below one end of the pin-type sensor 2 where no pin 201 is located.
In the embodiment, the lifting type dismounting tool taking the sucker device 16 as the stress structural member of the sensor adopts the following working principle:
and a PCB fixing device (a device avoiding device 3 or a needle carving type fixing device 4 is selected according to the structure of the PCB 1) is fixedly arranged on the surface of the PCB 1, and the PCB 1 to be separated and the pin type sensor 2 are placed on a bearing table 6.
The sucker device 16 is matched with the clamping device to separate the motion of the PCB 1 and the pin type sensor 2, and the following two situations exist:
first, the clamping device clamps the fixed pin type sensor 2: the PCB 1 and the PCB fixing device are fixed on the bearing table 6. The pin sensor 2 is held using a vacuum sponge suction cup 1601, and a suction cup holding device 1602 is placed in the receiving table 6. The pin type sensor 2 is clamped and fixed through the clamping device, so that the fixing sites of the clamping device on the pin type sensor 2 are all the force application areas of the pin type sensor 2. The clamping device is driven by the transmission device to sequentially move downwards clockwise, and force for separating the pin type sensor 2 from the PCB 1 is sequentially applied to the periphery of the pin type sensor 2, so that the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position each time is within a set range. The setting range is summarized according to experience of the separation distance between the PCB 1 and the pin type sensor 2 under different stress conditions of the pin type sensor 2.
The motion process of the transmission device driving the clamping device is as follows: the screw hand wheel 11 is rotated, the front and back tooth screw 14 rotates along with the rotation, and the screw nuts 13 on the two sides convert the rotation into movement to drive the first sliding blocks 8 on the two sides of the screw nuts 13 to move in the same direction. In the moving process of the first sliding block 8 along the first guide rail 7 to the direction far away from the bearing table 6, the second sliding block 10 is driven to move along the second guide rail 9 through the connecting piece 15, and the second sliding block 10 drives the clamping device and the contact pin type sensor 2 to synchronously move in the same direction.
Second, clamping device centre gripping fixed PCB board fixing device: the pin sensor 2 is held using a vacuum sponge suction cup 1601, and a suction cup holding device 1602 is placed in the receiving table 6. The sucking disc device 16 is arranged in the bearing table 6, and the vacuum sponge sucking disc 1601 drives the pin type sensor 2 to move downwards or fixes the position of the pin type sensor 2 in the bearing table 6 to be unchanged. The PCB fixing device is clamped and fixed through the clamping device, so that the fixing sites of the clamping device on the PCB fixing device are all the force application areas of the PCB 1. The clamping device is driven by the transmission device to sequentially lift and move clockwise, and force for separating the pin type sensor 2 from the PCB 1 is sequentially applied to the periphery of the PCB fixing device, so that the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position every time is within a set range. The setting range is summarized according to experience of the separation distance between the PCB 1 and the pin type sensor 2 under different stress conditions of the pin type sensor 2.
The motion process of the transmission device driving the clamping device is as follows: the screw hand wheel 11 is rotated, the front and back tooth screw 14 rotates along with the rotation, and the screw nuts 13 on the two sides convert the rotation into movement to drive the first sliding blocks 8 on the two sides of the screw nuts 13 to move in the same direction. In the moving process of the first sliding block 8 along the first guide rail 7 to the direction far away from the bearing table 6, the second sliding block 10 is driven to move along the second guide rail 9 through the connecting piece 15, and the second sliding block 10 drives the clamping device and the PCB fixing device to synchronously move in the same direction.
Detecting the force applied to the force application areas by using a pressure sensor arranged on the clamping device, and judging whether the force applied to each force application area is in an experience range or not; the experience range is a range of values of the force zone summarized according to the removal experience of each model of the pin sensor 2.
If the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range. And continuing the circulation operation, and separating the pin type sensor 2 from the PCB 1 to obtain the detached pin type sensor 2.
The clamping means in this embodiment comprise side clamping means 18 and four corner clamping means 19. The clamping object may be set as a PCB board fixture or a pin sensor 2. The moving direction of the separating process of the clamping device in this embodiment can be set or changed according to the actual situation.
The vacuum sponge sucker 1601 in the present embodiment may also be replaced with another type of sucker according to actual requirements. Compared with the embodiments 1 and 2, the fixing of the pin sensor 2 is added in the receiving table 6, and the PCB 1 and the pin sensor 2 are more conveniently separated by a bidirectional force application mode. In addition, the sucking disc device 16 is arranged on the surface of the pin type sensor 2 without the pin 201, so that damage to the pin 201 caused by improper operation or uneven stress is avoided.
Example 4
As shown in fig. 10 and 11, the present embodiment replaces the suction cup device 16 with a pre-assembled structure 17 on the basis of embodiment 3, and the pre-assembled structure 17 includes a pre-assembled structure 1702 and a flexible material 1701.
A flexible material 1701 is coupled to the pin sensor 2, the flexible material 1701 having a porous site design, the hole site corresponding to the pin 201 location of the pin sensor 2. Before the PCB 1 is assembled with the pin type sensor 2, the flexible material 1701 passes through the pin 201 and is arranged on the surface of the pin type sensor 2; the flexible material 1701 is larger than the pin type sensor 2 in size, the flexible material 1701 is reserved on two sides of the pin type sensor 2, the flexible material 1701 is fixedly connected with the preassembled structure 1702, the flexible material 1701 is provided with a stress hole, and the PCB 1 and the pin type sensor 2 can be separated by applying force to the stress hole to separate the PCB 1 from the pin type sensor 2.
A preassembling structure 1702 is arranged below one end of the pin-shaped sensor 2 without the pin 201, and the preassembling structure 1702 is fixedly provided with flexible materials 1701 at two sides of the pin-shaped sensor 2; the pre-assembled structure 1702 is placed inside the receiving platform 6.
The working principle of the present embodiment using the preassembled component 17 as the sensor stress component is as follows:
and a PCB fixing device (a device avoiding device 3 or a needle carving type fixing device 4 is selected according to the structure of the PCB 1) is fixedly arranged on the surface of the PCB 1, and the PCB 1 to be separated and the pin type sensor 2 are placed on a bearing table 6. The PCB 1 and the PCB fixing device are fixed on the bearing table 6. The preassembled component 17 is placed in the receiving table 6.
The force holes on both sides of the flexible material 1701 are mounted on the clamping device such that the fixing sites of the clamping device on the force holes are all the force areas of the flexible material 1701. The clamping device is driven by the transmission device to sequentially move downwards clockwise, and force for separating the pin type sensor 2 from the PCB 1 is sequentially applied to the fixing sites of the stress holes, so that the separation distance between the pin type sensor 2 and the PCB 1 at the corresponding force area position each time is within a set range. The setting range is summarized according to experience of the separation distance between the PCB 1 and the pin type sensor 2 under different stress conditions of the pin type sensor 2.
The motion process of the transmission device driving the clamping device is as follows: the screw hand wheel 11 is rotated, the front and back tooth screw 14 rotates along with the rotation, and the screw nuts 13 on the two sides convert the rotation into movement to drive the first sliding blocks 8 on the two sides of the screw nuts 13 to move in the same direction. In the moving process of the first sliding block 8 along the first guide rail 7 to the direction far away from the bearing table 6, the second sliding block 10 is driven to move along the second guide rail 9 through the connecting piece 15, and the second sliding block 10 drives the clamping device and the contact pin type sensor 2 to synchronously move in the same direction.
Detecting the force applied to the force application areas by using a pressure sensor arranged on the clamping device, and judging whether the force applied to each force application area is in an experience range or not; the experience range is a range of values of the force zone summarized according to the removal experience of each model of the pin sensor 2.
If the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range. And continuing the circulation operation, and separating the pin type sensor 2 from the PCB 1 to obtain the detached pin type sensor 2.
The clamping means in this embodiment comprise side clamping means 18 and four corner clamping means 19. The clamping object may be set as a PCB board fixture or a pin sensor 2. The moving direction of the separating process of the clamping device in this embodiment can be set or changed according to the actual situation.
Compared with embodiment 3, the embodiment ensures the absolute fixation of the pin type sensor 2 by preassembling the flexible material 1701, and is suitable for the separation of various pin type sensors 2; the condition that the pin type sensor 2 cannot be fixed by the vacuum sponge sucker 1601 from the bottom due to material or other problems is avoided.
The invention also provides a control system for disassembling the pin type sensor 2, which comprises a control device and the lifting type disassembling tool in the embodiment. The lifting type dismounting tool is used for executing the dismounting method; the control device is respectively and electrically connected with the pressure sensor and the clamping device and is used for receiving the reading of the pressure sensor and controlling the movement of the clamping device.
The lifting type dismounting tool provided by the invention adopts a combined fixing mode of the clamping device and the stress structural members of various sensors, so that the problem that the pin type sensor 2 or the PCB 1 cannot be fixed or clamped due to the problems of structure, materials and the like is solved; the friction element 20 arranged in the clamping device can increase the friction force between the sensor assembly and the clamping device and protect the sensor assembly. The invention provides a PCB fixing device, which is fixedly arranged on the surface of a PCB 1 and uniformly disperses the stress of the PCB 1; meanwhile, the device clearance type fixing device 3 and the needle carving type fixing device 4 are also provided, and the PCB fixing device is designed according to different structures of the PCB 1, so that the PCB fixing device can fix the PCB 1 with the largest contact area, the components of the PCB 1 are protected as much as possible, and the PCB 1 is prevented from being deformed due to stress in the separation process. The control system provided by the invention can ensure that the stress of the PCB 1 and the pin type sensor 2 is balanced in the disassembly process, and avoid the deformation of the PCB 1 or the pin type sensor 2. Under the regulation and control of the control system, the disassembly process is normalized and scientific, and the disassembly of the sensor can be rapidly completed.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a method for disassembling pin type sensor, is fixed with PGA socket on the PCB board, PGA socket is connected with pin of pin type sensor, its characterized in that includes:
installing a PCB fixing device on the surface of the PCB, so that the PCB fixing device and the PCB synchronously move, and the force born by the PCB fixing device is uniformly distributed relative to the PCB;
fixing the positions of the PCB and the PCB fixing device, and keeping the positions unchanged;
a plurality of force application areas are symmetrically distributed along the periphery of the pin type sensor, and forces for separating the pin type sensor from the PCB board are sequentially and circularly applied to the force application areas along the fixed direction of the periphery of the pin type sensor; the separation distance between the contact pin type sensor and the PCB at the corresponding position of the force application area each time is within a set range;
and separating the pin type sensor from the PCB to obtain the detached pin type sensor.
2. The method of disassembling a pin sensor of claim 1, further comprising:
detecting the force applied by the force application areas, and judging whether the force applied by each force application area is within an experience range or not;
if the force applied to the force application area is not within the experience range, stopping the cyclic separation operation, applying vibration assistance and/or hot air assistance to the force application area, and independently operating the separation operation of the force application area until the force applied to the force application area is within the experience range.
3. A lifting type dismounting tool for a pin type sensor, which is used for executing the dismounting method for the pin type sensor according to any one of claims 1 to 2, and comprises the following steps:
the bearing table is used for fixing the PCB and the PCB fixing device; the bearing table is also provided with an auxiliary device for assisting the separation operation of the PCB and the pin type sensor; the auxiliary device comprises a hot air auxiliary device and/or a vibration auxiliary device;
at least two clamping devices for clamping the side surfaces of the pin type sensor; each clamping device independently moves along the separation direction of the pin type sensor and the PCB so as to separate the pin type sensor from the PCB; the clamping devices are provided with pressure sensors;
the PCB fixing device is fixedly arranged on the surface of the PCB and is coupled with the surface of the PCB; the PCB fixing device and the PCB move synchronously, so that the separating force applied to the PCB fixing device is distributed uniformly relative to the PCB.
4. A lifting type dismounting tool for a pin type sensor according to claim 3, wherein a friction element is arranged at a contact position of the clamping device and the pin type sensor; the friction element is arranged on the inner side of the clamping device and used for increasing friction force between the pin type sensor and the clamping device.
5. The lifting type dismounting tool for the pin type sensor according to claim 4, wherein a sensor stress structural member is further arranged at a contact position of the clamping device and the pin type sensor; the sensor stress structural member is coupled with the pin type sensor, and the sensor stress structural member is used for uniformly dispersing the separation force of the pin type sensor and the PCB, so that the force born by the sensor stress structural member is distributed uniformly relative to the pin type sensor.
6. The lifting type disassembly tool of the pin type sensor according to claim 5, wherein the PCB board fixing device comprises a pin carving type fixing device, the pin carving type fixing device comprises:
the PCB fixing structure is arranged on two sides of the substrate and used for fixing the position of the PCB on the substrate;
a plurality of press caps mounted inside the substrate; the pressing cap openings correspond to the threaded holes, external threads are arranged at the upper ends of the pressing caps, and are meshed with the internal threads of the threaded holes and used for pressing the lower ends of the springs and the ejector pins into the pressing caps;
the spring is arranged in the pressure cap; one end of the spring is arranged at the bottom of the pressing cap, and the other end of the spring is contacted with the thimble, so that the thimble has an elastic movable space and is assisted to contact the surface of the PCB;
the ejector pin is arranged in the press cap; the upper end of the thimble is contacted with the surface of the PCB, and the lower end of the thimble is contacted with the spring.
7. The lifting type dismounting tool for the pin type sensor of claim 5, wherein the PCB board fixing device further comprises a device clearance type fixing device;
fixing holes are formed in the periphery of the device clearance type fixing device, and screws penetrate through the fixing holes to fix the PCB and the device clearance type fixing device;
the device clearance type fixing device is provided with a component clearance characteristic, the component clearance characteristic is coupled with components of the PCB and used for protecting the components on the PCB and uniformly dispersing separation force born by the PCB.
8. The lifting type disassembly tool for the pin type sensor according to claim 5, wherein the sensor stress structural component comprises a preassembled structure and a flexible material;
the flexible material is coupled with the pin-type sensor, the flexible material is provided with a multi-hole position design, and the hole position corresponds to the pin position of the pin-type sensor;
the preassembling structure is arranged below one end of the pin-free sensor, which is provided with flexible materials at two sides of the pin-free sensor; the preassembly structure is placed inside the receiving table.
9. The lifting type disassembly tool for the pin type sensor according to claim 5, wherein the sensor stress structural component further comprises a sucker and a sucker fixing structure;
one end of the sucker is arranged on one surface of the pin type sensor without a pin, and the other end of the sucker is fixedly arranged on the sucker fixing structure;
the sucker fixing structure is arranged below one end of the pin-shaped sensor, which is not provided with a pin; the sucker fixing structure is placed inside the bearing table.
10. A control system for dismounting a pin-type sensor, comprising a control device and a lifting dismounting tool as claimed in any one of claims 3 to 9;
the lifting type dismounting tool is used for executing the dismounting method according to any one of claims 1 to 2;
the control device is respectively and electrically connected with the pressure sensor and the clamping device and is used for receiving the reading of the pressure sensor and controlling the movement of the clamping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310294765.XA CN116117732A (en) | 2023-03-24 | 2023-03-24 | Method for disassembling contact pin type sensor and lifting type disassembling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310294765.XA CN116117732A (en) | 2023-03-24 | 2023-03-24 | Method for disassembling contact pin type sensor and lifting type disassembling tool |
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| Publication Number | Publication Date |
|---|---|
| CN116117732A true CN116117732A (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310294765.XA Pending CN116117732A (en) | 2023-03-24 | 2023-03-24 | Method for disassembling contact pin type sensor and lifting type disassembling tool |
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| CN (1) | CN116117732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961520A (en) * | 2024-03-20 | 2024-05-03 | 邯郸市豪鹏智能科技有限公司 | Bolt and nut tightening assembly machine |
-
2023
- 2023-03-24 CN CN202310294765.XA patent/CN116117732A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961520A (en) * | 2024-03-20 | 2024-05-03 | 邯郸市豪鹏智能科技有限公司 | Bolt and nut tightening assembly machine |
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