CN114323988B - Be used for PCB board pin welding to draw testing arrangement - Google Patents
Be used for PCB board pin welding to draw testing arrangement Download PDFInfo
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- CN114323988B CN114323988B CN202210205689.6A CN202210205689A CN114323988B CN 114323988 B CN114323988 B CN 114323988B CN 202210205689 A CN202210205689 A CN 202210205689A CN 114323988 B CN114323988 B CN 114323988B
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Abstract
The invention discloses a PCB pin welding and drawing test device which comprises a drawing test device arranged at the bottom of a driving assembly, wherein the drawing test device is driven to ascend and descend by the driving assembly; the drawing test device comprises a contact plate, a shell and an elastic gas storage layer, wherein the elastic gas storage layer is arranged between the contact plate and the shell, and when the drawing test device is driven by a driving assembly to press down a PCB, the contact plate is in contact with and tightly pressed with the upper end face of the PCB; one side of the shell is fixedly provided with a shaft sleeve, a telescopic shaft is arranged in the shaft sleeve, and the inner side end of the shaft sleeve is connected with the elastic gas storage layer through a connecting pipe. According to the drawing test device, the welding strength test of the side surface and the vertical direction of the pin of the PCB can be realized only by pressing down the PCB, the integrated rapid and efficient test can be realized, the drawing environment which possibly appears on the PCB can be more truly restored in the test process, the test effect is more accurate, and the structural design is more reasonable.
Description
Technical Field
The invention relates to the field of PCB (printed circuit board) testing devices, in particular to a PCB pin welding and drawing testing device.
Background
After the pins are welded, the pulling force of the pins needs to be tested, the traditional manual pulling test mode is high in labor intensity and low in efficiency, workers are prone to fatigue after manual testing is carried out for a long time, so that more pulling test devices appear on the market at present, the working principle of the pulling test is that the PCB is firstly positioned and fixed by using a positioning device to keep a fixed state, then pulling equipment is used for clamping the pins and locking the pins and then pulling is carried out, the traditional pulling mode is vertically upwards pulled, so that the pulling test effect is not accurate, when the device is actually used, the pins can bear the pulling force of the side faces, and the pulling force of the side faces is not tested, so that the strength of the pins cannot be ensured in later use. If the lateral strength test of the pin is to be realized, a transverse drawing test structure is required to be arranged, so that the transverse and longitudinal drawing structures are required to be arranged in the drawing test process, the whole drawing equipment is very complicated, the time of the whole test process is increased, and the process is increased. In addition, when drawing the test, still must use location structure location PCB board to draw the test again, whole location process need consume a large amount of time, and the location structure who sets up PCB moreover can make testing arrangement more complicated, still need dismantle the circuit board behind the location clamping, and the whole process is very troublesome, efficiency meeting greatly reduced moreover.
Disclosure of Invention
The technical problem to be solved by the invention is that the device for testing the welding and drawing of the pins of the PCB can realize the transverse and longitudinal drawing test of the pins only by performing a positioning action of pressing down the PCB in the whole process, the detection efficiency is greatly improved, the structure can be greatly simplified, the design is more reasonable, and a plurality of defects in the prior art are effectively solved.
The invention is realized by the following technical scheme: a drawing test device for welding pins of a PCB comprises a drawing test device arranged at the bottom of a driving assembly, wherein the drawing test device is driven to ascend and descend by the driving assembly;
the drawing test device comprises a contact plate, a shell and an elastic gas storage layer, wherein the elastic gas storage layer is arranged between the contact plate and the shell, and after the drawing test device is driven by a driving assembly to press down a PCB, the contact plate is in contact with and tightly pressed against the upper end face of the PCB;
a shaft sleeve is fixedly arranged on one side of the shell, a telescopic shaft is arranged in the shaft sleeve, the inner side end of the shaft sleeve is connected with the elastic gas storage layer through a connecting pipe and is connected and conducted with a gas storage cavity in the elastic gas storage layer, one end of the telescopic shaft is inserted into the telescopic cavity in the shaft sleeve and is provided with a first sealing piston, one end of the telescopic cavity is connected and conducted with the gas storage cavity in the elastic gas storage layer through the connecting pipe, and a first electromagnetic valve is arranged on the connecting pipe;
the extension end of the telescopic shaft is connected with a fixed cylinder, the top of the fixed cylinder is embedded with an electromagnet, the top of the electromagnet is provided with a metal block, the metal block is sucked by the electrified electromagnet, the top of the metal block is connected with a pneumatic clamping device by a connecting section, the bottom of the metal block is provided with a connecting rod, the connecting rod penetrates through the electromagnet and extends into a first air inlet cavity of the fixed cylinder, one end of the connecting rod, which extends into the first air inlet cavity, is connected with a second sealing piston, a third sealing piston is arranged in the first air inlet cavity at the bottom of the second sealing piston, the bottom of the third sealing piston is provided with a pressure spring, an air compression cavity is formed between the second sealing piston and the third sealing piston, one side of the air compression cavity is provided with a first butt joint, the first butt joint is in butt joint with the first butt joint at one side of the shell, and one side of the shell is also provided with a second butt joint, the second butt joint is in butt joint with the pneumatic clamping device through a second butt joint pipe;
the other ends of the first pair of joints and the second pair of joints are connected with a three-way pipe, the other end of the three-way pipe is connected and conducted with the elastic gas storage layer, a second electromagnetic valve is arranged on the three-way pipe, the first electromagnetic valve and the second electromagnetic valve are controlled to be opened and closed through an external control host, power is supplied through an external power supply, and the electromagnet is controlled to be opened and closed through the external control host; a transverse pressure detection assembly is arranged in a clamping port of the pneumatic clamping device, and a signal output end of the transverse pressure detection assembly is connected with the control host.
According to the preferable technical scheme, the pneumatic type clamping device comprises a hollow clamping tube, a second air inlet cavity is formed in the clamping tube, a fourth sealing piston is arranged in the second air inlet cavity, a first reset spring is arranged on one side of the fourth sealing piston, the clamping tube on the other side of the fourth sealing piston is in butt joint with a second butt joint tube and is communicated with the second butt joint tube, a fixing clamp is arranged on the clamping tube, the first reset spring is arranged on one side close to the fixing clamp, a push rod is arranged on one side of the fourth sealing piston, the push rod penetrates through the clamping tube and extends out of the clamping tube, the extending end of the push rod is in contact with the fixing clamp, and the push rod pushes the fixing clamp to clamp pins in the clamping cavity.
As the preferred technical scheme, the fixing clamp comprises a main body and clamping plates with elasticity, wherein the clamping plates are arranged on one side of the main body, a clamping cavity is formed between the two clamping plates, the two clamping plates are in a splayed shape, the transverse pressure detection assembly is arranged in the clamping cavity, the transverse pressure detection assembly is in extrusion contact with the pins and generates a pressure value through the fixing clamp moving towards the pins horizontally, and the main body is fixedly arranged on one side of the clamping pipe.
As the preferred technical scheme, the transverse pressure detection assembly comprises a connecting sheet, wherein the two sides of the connecting sheet are respectively fixedly connected with the clamping plates and are arc-shaped, the connecting sheet is positioned on one side of the opening of the clamping cavity and fixedly provided with a pressure sensor, and the output end of the pressure sensor is connected with the control host machine and used for detecting the transverse pressure value of the pin.
As preferred technical scheme, the opposite face of two splint all bonds a fixed rubber contact piece, all is provided with anti-skidding texture on the rubber contact piece, and outside opening one side of splint all sets up an arc parcel portion.
As the preferred technical scheme, the bottom of the fixed cylinder is sealed by a thread bottom cover, the lower end face of the pressure spring is in contact support with the thread bottom cover, and the thread bottom cover is provided with a small air inlet and outlet pipe.
As the preferred technical scheme, the lower end face of the contact plate is provided with a rubber contact layer, the top of the contact plate is provided with a guide rod, a corresponding first guide hole is formed in the elastic gas storage layer right facing the guide rod, a second guide hole is formed in the bottom face of the shell right facing the first guide hole, the guide rod penetrates through the first guide hole and the second guide hole and extends into the containing cavity in the shell, and a wire outlet hole is formed in the top of the shell.
As the preferred technical scheme, a connecting support is fixedly arranged at the top of the shell, a connecting shaft is arranged in the middle of the connecting support, and the connecting shaft is connected with an external driving assembly.
As the preferred technical scheme, a second return spring is sleeved on a telescopic shaft in the telescopic cavity, one end of the second return spring is in contact with the first sealing piston, and the other end of the second return spring is in contact with the bottom surface of the telescopic cavity.
The beneficial effects of the invention are: the invention integrates the PCB positioning, pin transverse and longitudinal drawing structure, only needs to use an external driving component to drive the whole drawing test device to press down the PCB, and can realize the fixed positioning of the PCB and the transverse and longitudinal drawing test of the pins, the whole process is in place in one step, the structure is greatly simplified, the efficiency is improved, and the test result is more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a housing according to the present invention;
FIG. 2 is an overall top view of the present invention;
FIG. 3 is an internal cross-sectional view of the housing of the present invention;
FIG. 4 is a schematic view of the pneumatic clamping device of the present invention;
FIG. 5 is a schematic view of the internal structure of the fixing cylinder according to the present invention;
fig. 6 is a working principle diagram of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and 2, the drawing test device for the pin soldering of the PCB of the present invention comprises a drawing test device installed at the bottom of a driving assembly, wherein the drawing test device is driven by the driving assembly to ascend and descend;
the drawing test device comprises a contact plate 4, a shell 3 and an elastic gas storage layer 8, wherein the elastic gas storage layer 8 is arranged between the contact plate 4 and the shell 3, and when the drawing test device is driven by a driving assembly to press down a PCB, the contact plate 4 is in contact with and tightly pressed with the upper end surface of the PCB;
as shown in fig. 3, a shaft sleeve 6 is fixedly arranged on one side of the housing 3, a telescopic shaft 17 is arranged in the shaft sleeve 6, the inner side end of the shaft sleeve 6 is connected with the elastic gas storage layer 8 through a connecting pipe 44 and is connected and communicated with a gas storage cavity 81 in the elastic gas storage layer 8, one end of the telescopic shaft 17 is inserted into the telescopic cavity in the shaft sleeve 6 and is provided with a first sealing piston 46, one end of the telescopic cavity is connected and communicated with the gas storage cavity 81 in the elastic gas storage layer 8 through the connecting pipe 44, and a first electromagnetic valve 43 is arranged on the connecting pipe 44;
as shown in fig. 5, the extending end of the telescopic shaft 17 is connected to a fixed cylinder 10, an electromagnet 26 is embedded in the top of the fixed cylinder 10, a metal block 16 is disposed on the top of the electromagnet 26, the metal block 16 is attracted by the electromagnet 26 when being energized, the top of the metal block 16 is connected to a pneumatic clamping device by a connecting section 25, a connecting rod 27 is disposed on the bottom of the metal block, the connecting rod 27 passes through the electromagnet 26 and extends into a first air inlet chamber 50 of the fixed cylinder 10, one end of the connecting rod 27 extending into the first air inlet chamber 50 is connected to a second sealing piston 28, a third sealing piston 31 is disposed in the first air inlet chamber 50 on the bottom of the second sealing piston 28, a pressure spring 34 is disposed on the bottom of the third sealing piston 31, an air compression chamber 29 is formed between the second sealing piston 28 and the third sealing piston 31, the magnetic attraction strength of the electromagnet 26 after being energized should be high enough to prevent the electromagnet from being separated from the metal block after the air compression chamber is continuously inflated with air, the pneumatic clamping device is always in the suction state, so that the pneumatic clamping device cannot be jacked up due to air pressure; a first butt joint pipe 15 is arranged on one side of the air compression cavity, the first butt joint pipe 15 is in butt joint with a first butt joint 5 on one side of the shell 3, a second butt joint 7 is also arranged on one side of the shell, and the second butt joint 7 is in butt joint with a pneumatic type clamping device through a second butt joint pipe 14;
as shown in fig. 3, the other ends of the first pair of joints 5 and the second pair of joints 7 are connected with a three-way pipe 47, the other end of the three-way pipe 47 is connected and conducted with the elastic gas storage layer 8, a second electromagnetic valve 42 is arranged on a main pipe section of the three-way pipe 47, the first electromagnetic valve 43 and the second electromagnetic valve 42 are controlled to be opened and closed by an external control host and are connected to supply power by an external power supply, and the electromagnet 26 is controlled to be opened and closed by the external control host; a transverse pressure detection assembly is arranged in a clamping port of the pneumatic clamping device, and a signal output end of the transverse pressure detection assembly is connected with a control host, as shown in fig. 6.
As shown in fig. 4, the pneumatic clamping device includes a hollow clamping tube 19, a second air inlet chamber 36 is formed inside the clamping tube 19, a fourth sealing piston 37 is disposed in the second air inlet chamber 36, a first return spring 35 is disposed on one side of the fourth sealing piston 37, the clamping tube 19 on the other side of the fourth sealing piston 37 is in butt joint with the second butt joint tube 14, a fixing clamp is disposed on the clamping tube 19, the first return spring 35 is disposed on one side close to the fixing clamp, a push rod 18 is disposed on one side of the fourth sealing piston 37, which is located on the first return spring 35, the push rod 18 penetrates through the clamping tube 19 and extends out to the outside, an extending end of the push rod 18 contacts with the fixing clamp, and the push rod 18 pushes the fixing clamp to clamp the pin 200 located in the clamping chamber.
As shown in fig. 4, the fixing clip includes a main body 21 and a clamp plate 201 having elasticity, the clamp plate 201 is disposed on one side of the main body 21, a clamping cavity is formed between the two clamp plates 201, the two clamp plates 201 are in a shape of a figure eight, the transverse pressure detecting assembly is disposed in the clamping cavity, the transverse pressure detecting assembly is brought into press contact with the pin 200 by the fixing clip horizontally moving toward the pin and generates a pressure value, and the main body 21 is fixedly disposed on one side of the clamping tube 19.
Wherein, horizontal pressure measurement subassembly includes a connection piece 22, and the both sides of connection piece 22 respectively with splint 201 fixed connection and be the arc form, connection piece 22 is located the fixed pressure sensor 24 that sets up in centre gripping chamber opening one side, pressure sensor 24's output connection control host computer for detect the horizontal pressure value of pin.
In order to increase the contact softness with the pin, prevent to damage the pin, so all bond a fixed rubber contact piece 203 at the opposite face of two splint, all be provided with anti-skidding texture on the rubber contact piece 203, increase the 200 contact frictional force with the pin, the outside opening one side of splint 201 all sets up an arc parcel portion 202 for better and pin contact prevents that the pin from following the centre gripping intracavity slippage when pressing from both sides tightly.
As shown in fig. 5, the bottom of the fixed cylinder 10 is sealed by a threaded bottom cover 32, the lower end surface of the pressure spring 34 is supported in contact with the threaded bottom cover 32, an air inlet and outlet pipe 33 is arranged on the threaded bottom cover 32, after the air is filled, the third sealing piston 31 descends, the pressure spring 34 is pressed, the air at the bottom of the third sealing piston 31 is discharged from the air inlet and outlet pipe 33, the bottom cover of the threaded bottom cover 32 is mainly used for taking out and replacing the pressure spring, and the replacement of the pressure spring is used for controlling the pressure value of the pneumatic clamping assembly jacked up by the pressure spring, namely controlling the pressure value of the vertical tension pin, so that the spring with different rebound pressures can be selected according to the required drawing force in advance to control the drawing force, and further realize the drawing test.
The lower end face of the contact plate 4 is provided with a rubber contact layer 48 for increasing the flexibility when contacting with the PCB and preventing the PCB from being damaged when being pressed; the top of contact plate is provided with guide bar 51, be provided with the first guiding hole that corresponds on the elasticity gas storage layer 8 to guide bar 51, just be provided with the second guiding hole to the casing 3 bottom surface of first guiding hole, guide bar 51 passes first guiding hole and second guiding hole and stretches into to the inside chamber 41 that holds of casing, when the test, when utilizing the drive assembly at top to push down whole casing 3, the contact plate 4 and the rubber contact layer 48 of bottom can be earlier with PCB board up end contact, along with continuing to push down, elasticity gas storage layer pressurized, guide bar 51 is continuous to insert to the inside chamber 41 that holds of casing, realize the effect of direction, prevent to rock, the top that is located the casing is provided with wire hole 11, the power control line of electro-magnet 26 passes wire hole 11 and connects the external control host computer end.
As shown in fig. 1, a connecting support 2 is fixedly arranged at the top of the shell 3, a connecting shaft 1 is arranged in the middle of the connecting support 2, the connecting shaft 1 is connected with an external driving assembly, and the driving assembly drives the shell to perform a pressing action, so that transverse and longitudinal drawing tests of the positioning PCB and the pins can be realized.
Wherein, suit a second reset spring 45 on the telescopic shaft 17 in flexible intracavity, second reset spring 45 one end and first sealing piston 46 contact, and the other end contacts with flexible intracavity bottom surface, and after the test was accomplished, drive assembly mentioned whole casing, and second reset spring 45 is used for restoring to the throne telescopic shaft this moment.
The whole test process is as follows:
the driving component is connected with the connecting shaft, the driving component can be any mechanism with lifting capacity, and can be an air cylinder and the like, before testing, the electromagnet needs to be opened firstly, so that the metal block is attracted with the electromagnet, then the first electromagnetic valve is opened, and the second electromagnetic valve is closed; the whole drawing test device is moved and can be controlled by an external X, Y transverse moving platform or other driving manipulators to control the position of the whole drawing test device, the falling position of the drawing test device needs to be controlled at one side of a pin to be tested, namely the position of a clamping cavity of a pneumatic clamping device is positioned at one side of the pin, so that the pin can be buckled into the clamping cavity by the horizontally ejected pneumatic clamping device and is in extrusion contact with a transverse pressure detection assembly; after the steps are completed, the whole drawing test device is pressed downwards, the rubber contact layer is in contact with the upper end face of the PCB, at the moment, along with the downward pressing of the whole driving assembly, the elastic gas storage layer is compressed, gas in the elastic gas storage layer is continuously extruded and enters the telescopic cavity, because the first electromagnetic valve is opened and the second electromagnetic valve is closed, the extruded gas can only enter the telescopic cavity, the first sealing piston is further pushed to move towards one side away from the shell, the second reset spring is compressed, the whole telescopic shaft is ejected out to perform a leveling action, because the outer side of the telescopic shaft is connected with the fixed cylinder, and the pneumatic clamping device is arranged at the top of the fixed cylinder, along with the translation of the telescopic shaft, the whole pneumatic clamping device also translates towards the pin, the pin can be contacted with the pressure sensor after continuous translation, along with the continuous translation, the pressure value between the pin and the pressure sensor is gradually increased, the driving assembly is continuously and slowly pressed down until the pressure detection value of the pressure sensor reaches a set value, the driving assembly stops pressing down, the pin is just positioned in the clamping cavity, the pressure sensor feeds back a signal to the control mainboard at the control host end, the transverse drawing force representing the pin is detected to be qualified, the transverse drawing detection of the pin can be realized by utilizing the whole translation, a transverse drawing mechanism is not required to be specially arranged, the transverse drawing detection can be realized in the positioning process of longitudinal drawing, the integral structure is simplified, and the drawing detection accuracy is improved; after the control mainboard receives the pressure signal of pressure sensor feedback, the first solenoid valve of this moment by control mainboard control is closed, and the second solenoid valve is opened, and drive assembly continues to push down this moment, and this in-process is in all the time and compresses tightly the location state because whole device has carried out a location of pushing down to the PCB board. Along with the continuous pushing down of drive assembly, the gas that is located the elasticity gas storage layer can not enter into flexible intracavity again, can only enter into the second chamber of admitting air and the first intracavity of admitting air of fixed cylinder respectively through the three-way pipe, after gas entered into the first intracavity of admitting air of fixed cylinder, make the third sealed piston push down compression spring, whole air compression chamber is constantly propped open, the gradual increase of the pressure value in the air compression chamber, until compression spring is pressed completely, because electro-magnet and metal block actuation this moment, the second sealed piston can not push up the metal block, just can not push up pneumatic type clamping device yet.
Meanwhile, the gas entering the second air inlet cavity continuously pushes the fourth sealing piston to further compress the first return spring, the push rod is continuously pushed out along with the pushing of the fourth sealing piston, the pushed-out push rod pushes the two clamping plates to be closed due to the fact that one end of the push rod is in contact with the clamping plates, finally the pins are clamped by the two closed clamping plates, the pins are fixedly clamped in the clamping cavity, the power supply at the electromagnet is disconnected by the control main board at the moment, the electromagnet loses magnetic attraction, the second sealing piston is quickly and vertically pushed up under the action of the pressure spring, the bottom of the second sealing piston is pressed, the push-out connecting rod and the metal block are separated from the electromagnet in an attempt, but the pneumatic type clamping device is installed at the top of the metal block and clamped with the pins, and at the moment, the whole metal block and the pneumatic type clamping device cannot rise, the pressure value in the air compression cavity is the drawing force that the pin can bear at this moment, if the pin drawing force does not reach standard, then the pin bottom can be separated from the PCB board, and whether the pin meets the test requirement can be tested at this moment. After the detection is finished, all the electromagnetic valves are opened, the driving assembly moves the whole device upwards, the pressure on the PCB is removed, all the gas returns to the elastic gas storage layer again, the detection is finished, the PCB is replaced, and the steps are repeated. Therefore, the process can be completed in one step only by positioning and pressing, and the method is very simple, greatly improves the detection efficiency and simplifies the whole structure.
The invention has the beneficial effects that: the invention integrates the PCB positioning, pin transverse and longitudinal drawing structure, only needs to use an external driving component to drive the whole drawing test device to press down the PCB, and can realize the fixed positioning of the PCB and the transverse and longitudinal drawing test of the pins, the whole process is in place in one step, the structure is greatly simplified, the efficiency is improved, and the test result is more accurate.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a be used for PCB board pin welding to draw testing arrangement which characterized in that: the drawing test device is driven to ascend and descend by the driving assembly;
the drawing test device comprises a contact plate, a shell and an elastic gas storage layer, wherein the elastic gas storage layer is arranged between the contact plate and the shell, and after the drawing test device is driven by a driving assembly to press down a PCB, the contact plate is in contact with and tightly pressed against the upper end face of the PCB;
a shaft sleeve is fixedly arranged on one side of the shell, a telescopic shaft is arranged in the shaft sleeve, the inner side end of the shaft sleeve is connected with the elastic gas storage layer through a connecting pipe and is connected and conducted with a gas storage cavity in the elastic gas storage layer, one end of the telescopic shaft is inserted into the telescopic cavity in the shaft sleeve and is provided with a first sealing piston, the other end of the telescopic cavity is connected and conducted with the gas storage cavity in the elastic gas storage layer through a connecting pipe, and a first electromagnetic valve is arranged on the connecting pipe;
an extending end of the telescopic shaft is connected with a fixed cylinder, an electromagnet is embedded in the top of the fixed cylinder, a metal block is arranged on the top of the electromagnet and is attracted with the electrified electromagnet, the top of the metal block is connected with a pneumatic clamping device through a connecting section, a connecting rod is arranged at the bottom of the metal block, the connecting rod penetrates through the electromagnet and extends into a first air inlet cavity of the fixed cylinder, one end, extending into the first air inlet cavity, of the connecting rod is connected with a second sealing piston, a third sealing piston is arranged in the first air inlet cavity at the bottom of the second sealing piston, a pressure spring is arranged at the bottom of the third sealing piston, an air compression cavity is formed between the second sealing piston and the third sealing piston, a first butt joint is arranged on one side of the air compression cavity, the first butt joint is in butt joint with a first butt joint on one side of the shell, and a second butt joint is arranged on the other side of the shell, the second butt joint is in butt joint with the pneumatic clamping device through a second butt joint pipe;
the other ends of the first pair of joints and the second pair of joints are connected with a three-way pipe, the other end of the three-way pipe is connected and conducted with the elastic gas storage layer, a second electromagnetic valve is arranged on the three-way pipe, the first electromagnetic valve and the second electromagnetic valve are controlled to be opened and closed through an external control host, power is supplied through an external power supply, and the electromagnet is controlled to be opened and closed through the external control host; a transverse pressure detection assembly is arranged in a clamping port of the pneumatic clamping device, and a signal output end of the transverse pressure detection assembly is connected with the control host;
the pneumatic type clamping device comprises a hollow clamping tube, a second air inlet cavity is formed in the clamping tube, a fourth sealing piston is arranged in the second air inlet cavity, a first reset spring is arranged on one side of the fourth sealing piston, the clamping tube on the other side of the fourth sealing piston is in butt joint conduction with a second butt joint tube, a fixing clamp is arranged on the clamping tube, the first reset spring is arranged on one side close to the fixing clamp, a push rod is arranged on one side, located on the first reset spring, of the fourth sealing piston, the push rod penetrates through the clamping tube to extend out, the extending end of the push rod is in contact with the fixing clamp, and the push rod pushes the fixing clamp to clamp pins in the clamping cavity;
the fixing clamp comprises a main body and elastic clamping plates, the clamping plates are arranged on one side of the main body, a clamping cavity is formed between the two clamping plates, the two clamping plates are in a splayed shape, the transverse pressure detection assembly is arranged in the clamping cavity, the transverse pressure detection assembly is in extrusion contact with the pins through the fixing clamp which horizontally moves towards the pins and generates a pressure value, and the main body is fixedly arranged on one side of the clamping tube;
the transverse pressure detection assembly comprises a connecting sheet, the two sides of the connecting sheet are fixedly connected with the clamping plates respectively and are arc-shaped, a pressure sensor is fixedly arranged on one side, located at the opening of the clamping cavity, of the connecting sheet, and the output end of the pressure sensor is connected with the control host machine and used for detecting the transverse pressure value of the pin.
2. The device for testing the welding and drawing of the pins of the PCB according to claim 1, wherein: the opposite face of two splint all bonds a fixed rubber contact piece, all is provided with anti-skidding texture on the rubber contact piece, and outside opening one side of splint all sets up an arc parcel portion.
3. The device for testing the welding and drawing of the pins of the PCB according to claim 1, wherein: the bottom of the fixed cylinder is sealed through a thread bottom cover, the lower end face of the pressure spring is in contact with the thread bottom cover for supporting, and the thread bottom cover is provided with a small air inlet and outlet pipe.
4. The device for testing the soldering and drawing of the pins of the PCB according to claim 1, wherein: the lower terminal surface of contact plate is provided with one deck rubber contact layer, and the top of contact plate is provided with the guide bar, just is provided with the first guiding hole that corresponds on the elasticity gas storage layer of guide bar, just is provided with the second guiding hole to the casing bottom surface of first guiding hole, and the guide bar passes first guiding hole and second guiding hole and stretches into to the inside intracavity that holds of casing, and the top that is located the casing is provided with the wire hole.
5. The device for testing the welding and drawing of the pins of the PCB according to claim 1, wherein: the top of the shell is fixedly provided with a connecting support, a connecting shaft is arranged in the middle of the connecting support, and the connecting shaft is connected with an external driving assembly.
6. The device for testing the welding and drawing of the pins of the PCB according to claim 1, wherein: a second return spring is sleeved on a telescopic shaft in the telescopic cavity, one end of the second return spring is in contact with the first sealing piston, and the other end of the second return spring is in contact with the bottom surface of the telescopic cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205689.6A CN114323988B (en) | 2022-03-04 | 2022-03-04 | Be used for PCB board pin welding to draw testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205689.6A CN114323988B (en) | 2022-03-04 | 2022-03-04 | Be used for PCB board pin welding to draw testing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114323988A CN114323988A (en) | 2022-04-12 |
| CN114323988B true CN114323988B (en) | 2022-07-12 |
Family
ID=81030990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210205689.6A Active CN114323988B (en) | 2022-03-04 | 2022-03-04 | Be used for PCB board pin welding to draw testing arrangement |
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| CN118706589A (en) * | 2024-08-30 | 2024-09-27 | 大连以太激光科技有限公司 | Welding performance testing device of metal welding equipment |
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| US6664067B1 (en) * | 2000-05-26 | 2003-12-16 | Symyx Technologies, Inc. | Instrument for high throughput measurement of material physical properties and method of using same |
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| US4924709A (en) * | 1989-05-15 | 1990-05-15 | Daniels Manufacturing Corporation | Tension testing tool |
| CN102823341A (en) * | 2010-03-31 | 2012-12-12 | 弗莱克斯电子有限责任公司 | Pin soldering for printed circuit board failure testing |
| CN207964473U (en) * | 2018-04-10 | 2018-10-12 | 河南广瑞汽车部件股份有限公司 | A kind of tensile testing machine accurately measured |
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| CN114323988A (en) | 2022-04-12 |
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