CN206413276U - An improved automatic rework machine for PCBA through-hole in-line devices - Google Patents

Abstract

The utility model relates to an improved automatic repair machine for PCBA through hole direct-insert devices, which is provided with a main frame, wherein a PCBA fixing jig is arranged in the middle of the main frame; a lower heating component and a lower heating component driving cylinder are arranged below the PCBA fixing jig; an upper heating component is erected above the PCBA fixing jig, and the upper heating component is connected with a swing frame and driven by a first y-direction servo motor; the spout-type tin stove subassembly is installed to the below of the fixed tool of PCBA, and the manipulator device is installed to the top region of the fixed tool of PCBA. The utility model discloses in two mobilizable lower heating element, upper heating element constitute the preheating device of this machine of reprocessing, carry out abundant, evenly preheating to PCBA, make the preheating region with tear open weld, get a plug-in components region at same position, therefore the during operation need not make the circuit board leave the preheating region, reduce the heat loss, the energy saving shortens the wicking time, improves and reprocesses the quality; the automatic plug-in operation is carried out through the manipulator device, and the plug-in operation accuracy is improved.

Description

An improved automatic rework machine for PCBA through-hole in-line devices

Technical field:

The utility model relates to the technical field of electronic circuit board repairing equipment, in particular to an improved automatic repairing machine for PCBA through-hole in-line devices.

Background technique:

At present, in the domestic circuit board manufacturing industry, for the defects in the production of finished circuit board through-hole devices (PCBA PTH) and the cross-validation required for research and development, it is necessary to dismantle and solder the soldered through-hole devices. craft. The traditional method of rework, because there is no preheating and anti-deformation technology, but directly uses a small tin furnace for immersion tin desoldering, the time and accuracy cannot be controlled, and can only be controlled by the operator's experience, resulting in a large number of PCBAs Scrap or serious quality problems. Its main manifestations are: directly place the components to be replaced on the circuit board on the tin waves of the small tin furnace (some have no tin waves), so that due to the large temperature difference between the circuit board as a whole and the through-hole components to be replaced, thermal expansion Deformation caused by different systems, once the circuit board is deformed, it is very easy to cause problems such as internal open circuit, through-hole copper dissolution or hole copper fracture.

The utility model person has developed a kind of PCBA through-hole in-line device automatic rework machine, and it can preheat PCBA to a certain extent, partially solves the above-mentioned problem, yet, still has the following deficiencies: one, PCBA preheating The area is separated from the immersion tin area, and connected by rails, the whole machine needs to occupy a relatively large space; secondly, this structural arrangement determines that the rework process is to be preheated in the preheating area first, and then transferred to the immersion tin area. In the area, it takes time and there will be heat loss in the middle. It is necessary to extend the tin immersion time to compensate for the heat loss. Therefore, there will still be risks such as internal open circuit, through-hole copper dissolution or hole copper fracture, and the efficiency is also high; third, after the tin is melted Disassembly, pick-up, and plug-in all need to be done manually. Since the PCBA is at high temperature, it is necessary to wear heat-insulating gloves, which brings inconvenience to the operation, especially for small devices, which may easily cause defects such as inaccurate plug-in.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an improved automatic repair machine for PCBA through-hole in-line devices.

The technical solution adopted by the utility model is: an improved automatic repair machine for PCBA through-hole in-line devices, the automatic repair machine has a main frame, wherein:

A horizontally arranged first x-direction rail slide assembly and a first x-direction servo drive assembly are installed in the middle of the main frame, and the first x-direction rail slide assembly is installed with a PCBA fixing fixture;

In the middle of the main frame and under the PCBA fixing fixture, the second x-guided rail slide assembly is installed, and the two ends of the second x-guided slide assembly are respectively installed with a lower heating assembly, and the lower part of each lower heating assembly is respectively connected There is a lower heating assembly driving the cylinder, and the directions of the two lower heating assembly driving cylinders are arranged in opposite directions;

In the middle of the main frame and above the PCBA fixing jig, a pair of x guide grooves are set up, and an upper heating assembly is respectively arranged above the two ends of the x guide groove, and one side and two corners of each upper heating assembly are respectively arranged on the The guide wheel frames on the two x guide grooves are movably connected; a swing frame is movably connected outside the middle of both sides of each upper heating assembly, wherein the two upper end legs of the swing frame are movably pivoted to the two sides of the upper heating assembly, and the two The two lower end legs are connected to the bearing seat through the y-direction shaft, and one of the y-direction shafts is connected to the first y-direction servo motor;

The first y-guided rail slide assembly and the first y-direction servo drive assembly are installed on the bottom of the main frame and the lower area of the PCBA fixing fixture, and the jet-flow tin furnace assembly is installed on the first y-guided slide assembly. , the jet-flow tin furnace assembly includes a tin furnace bracket, a lifting table, and a tin furnace device, wherein the tin furnace bracket is a rectangular parallelepiped frame, and a longitudinal screw rod is installed in the middle of a pair of surfaces on its four sides, and a longitudinal screw rod is installed on the other pair of surfaces. Longitudinal guide rods are respectively installed in the middle, and two longitudinal screw rods and two longitudinal guide rods are respectively connected to the four corners of the lifting platform through the longitudinal screw female seat and the longitudinal guide rod bearing seat; A synchronous wheel is provided, and a lifting motor is provided on one side of the tin furnace support, and the output end of the lifting motor is connected to the synchronous wheel at the bottom of the longitudinal screw rod through a synchronous pulley transmission mechanism;

A manipulator device is installed on the top of the main frame and above the PCBA fixing jig. The manipulator device includes a second y-guided rail slide assembly and a second y-direction servo drive assembly installed on the top of the main frame. Two z-direction mounting plates on the y-direction rail slide assembly, the first z-direction guide slide assembly on the z-direction mounting plate and the first z-direction servo drive assembly connected to it, and the first z-direction guide slide assembly installed on the z-direction rail slide assembly The rotating motor and the reduction box on the seat assembly, the z-direction cylinder bracket connected to the output end of the reduction box, the z-direction cylinder installed in the z-direction cylinder bracket, and the jaw bracket plates installed on both sides of the z-direction cylinder support, The gripper mechanism installed on the inner side of the gripper bracket plate and connected with the z-direction cylinder.

In the above-mentioned automatic rework machine: a hot air pipe is respectively installed outside the two jaw bracket plates of the manipulator device, and the air outlet of the hot air pipe faces the bottom of the jaw mechanism.

In the above-mentioned automatic rework machine: the back of the cylinder bracket of the manipulator device is also connected with a vibrating motor.

In the above-mentioned automatic rework machine: the jaw mechanism of the manipulator device includes a first horizontal shaft connected to the output end of the z-direction cylinder, and the two ends of the first horizontal shaft are vertically passed through the strip-shaped holes on the jaw bracket plate; Between the two jaw support plates, there are also second horizontal shafts parallel to the first horizontal shaft on both sides below the first horizontal shaft, and a pair of horizontal shafts corresponding to the first horizontal shaft are pivotally connected to both ends of each second horizontal shaft. The movable jaws are symmetrically arranged, and the clamping plate is connected between the bottoms of the two movable jaws on the same second transverse axis; For the horizontal axis, the two ends of the third horizontal axis on both sides are movably connected with the two ends of the first horizontal axis through a connecting orifice respectively.

In the above-mentioned automatic rework machine, there is also a horizontal connecting plate connected between the two jaw bracket plates, the horizontal connecting plate is located between the movable jaws on both sides, and a through hole is opened in the middle of the horizontal connecting plate and a downward facing The cross laser alignment lamp is also equipped with a needle-shaped cylinder and a laser light baffle connected to it on the lower surface of the horizontal connecting plate.

In the above-mentioned automatic repairing machine, an elastic buffer pad is provided between the clamping plate and the movable jaw.

In the above-mentioned automatic rework machine, a camera is also installed on the back of the z-direction mounting plate.

In the above-mentioned automatic rework machine, the PCBA fixing fixture includes two x-direction bottom edge strips connected to the slide seat of the first x-direction rail slide assembly, and two y-direction bottom edge strips vertically erected on the two x-direction bottom edge strips. Bottom side strips; two x-direction fixed side strips with adjustment slots are erected on the y-direction bottom strips, and two x-direction fixed side strips are also provided with two sliding slots between the ends of the x-direction fixed side strips. y-direction fixed side strips; a y-direction movable side strip is connected between the two x-direction fixed side strips, and an x-direction movable side strip is connected between the two y-direction fixed side strips; the x-direction movable side strips, There are PCBA clamping blocks installed on the inside of the y-direction movable side strips and one of the x-direction fixed side strips and the y-direction fixed side strips; several support strips are also arranged between the two x-direction bottom side strips, each There are several supporting studs on the support bar; the position of the support bar and the support studs is lower than the upper x-direction movable side bar and y-direction movable side bar.

In the above-mentioned automatic rework machine, a protective plate is provided on the periphery and top of the main frame, and the protective plate on the top is provided with an air exhaust port; the inner side of the main frame is provided with the first x-guided rail slide assembly and a preheating device , the jet-flow tin furnace device, and the control area isolated by the manipulator device. The main control box and distribution box are arranged in the control area, and there are display screens, operation keys and mice and scanning guns on the surface; inside the main frame, the jet-flow type The side of the tin furnace device is provided with a transformer.

In the utility model, the two movable lower heating components and the upper heating component constitute the preheating device of the rework machine, which fully and evenly preheats the PCBA, so that the preheating area is at the same position as the unsoldering and pick-up plug-in area, Therefore, the circuit board does not need to leave the preheating area during work, which reduces heat loss, saves energy, shortens the tin dipping time, and improves the quality of rework; moreover, the rework position can be identified while preheating, without consuming moving time, which can greatly shorten the load. The board moving time is more than 70%, which improves the working efficiency; through the automatic drawing operation of the manipulator device, it can avoid the high temperature safety hazard and the inconvenience of manual operation, liberate the operator's hands, and improve the accuracy of the inserting operation;

In the utility model, the positioning of the processing position is realized by separately controlling the movement of the PCBA fixing fixture and the tin furnace device along the x-axis and the y-axis, and the operation is carried out in cooperation with the z-direction movement of the manipulator device and the tin furnace device to realize a full range of operations Covering can simplify the layout of the transmission structure and facilitate the assembly of the whole machine;

In addition, compared with the rework machine that needs to be moved from the preheating area to the processing area, the utility model does not require moving space, so the volume and occupied space of the whole machine are greatly reduced, which is convenient for equipment layout, packaging and transportation.

Description of drawings:

Fig. 1 is a schematic diagram of the external overall structure of the utility model automatic repair machine;

Fig. 2, Fig. 3 are the internal structural schematic diagrams of different angles of the utility model;

Fig. 4 and Fig. 5 are structural schematic diagrams of the first x-direction rail slide assembly, the first x-direction servo drive assembly, and the PCBA fixing fixture in the utility model;

Fig. 6 and Fig. 7 are structural schematic diagrams of the middle and lower heating components of the present invention;

Fig. 8 and Fig. 9 are structural schematic diagrams of the upper heating assembly in the utility model;

Fig. 10 is a structural schematic diagram of the jet-flow tin furnace assembly and its driving mechanism in the utility model;

Fig. 11, Fig. 12 are the structural representations of manipulator device in the utility model;

Fig. 13 and Fig. 14 are partial structural schematic diagrams of the manipulator device in the utility model.

detailed description:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1-3, what the utility model describes is an improved automatic repair machine for PCBA through-hole in-line devices. The automatic repair machine has a main frame 1, wherein:

In the middle of the main frame 1, a horizontally arranged first x-direction rail slide assembly 11 and a first x-direction servo drive assembly 111 are installed. The PCBA fixing jig 2 connected to the drive assembly 111;

As shown in Figures 6-7, a second x-guided rail slide assembly 12 is installed in the middle of the main frame 1 and below the PCBA fixing fixture, and two ends of the second x-guided slide assembly 12 are installed respectively. Heating components 3, the lower part of each lower heating component 3 is respectively connected with a lower heating component drive cylinder 31, and the directions of the two lower heating component drive cylinders 31 are arranged in opposite directions; in this embodiment, the second x-guided rail slide assembly 12 is disconnected from the middle, divided into two groups of second x-guided rail slide assembly 12, saving the middle part, which can save material and cost; that is, two groups of second x-guided rail slide assembly 12 are arranged on the same level and at intervals, Each second x guide rail slide assembly 12 is respectively equipped with a lower heating assembly 3; the lower heating assembly drive cylinder 31 respectively drives the two lower heating assemblies 3 to move toward each other or move backwards, so that the two lower heating assemblies 3 are When preheating, the two lower heating components 3 are in a close state to heat the upper PCBA. After the preheating is completed, the cylinder drives the two lower heating components 3 to separate, so that the lower surface of the PCBA is separated from the lower surface. The tin furnace components are opposite for follow-up operations such as desoldering;

In combination with Fig. 8 and Fig. 9, a pair of x guide grooves 13 are set up in the middle of the main frame 1 and above the PCBA fixing fixture 2, and an upper heating assembly 4 is respectively arranged above the two ends of the x guide groove 13, And one side and two corners of each upper heating assembly 4 are respectively movably connected with the guide wheel frame 131 arranged on the two x guide grooves 13; a swinging frame 41 is movably connected outside the middle of both sides of each upper heating assembly 4, The swing frame 41 is H-shaped, wherein the two upper legs of the H-shaped swing frame 41 are movably pivoted to both sides of the upper heating assembly 4, and the two lower legs of the H shape are connected to the bearing seat 43 through the y-direction rotating shaft 42, And one of the y-direction shafts 42 is connected to the first y-direction servo motor 44;

That is, the y-direction rotating shaft 42 is driven by the first y-direction servo motor 44, and the y-direction rotating shaft 42 rotates to make the swing frame 41 swing as a whole. When the swing frame 41 swings downward, the upper heating assembly 4 is pulled downward, and the inside of the upper heating assembly 4 The guide wheel frame 131 at the end moves to the middle of the guide groove 13 to x, and finally the upper heating assembly 4 is in a horizontal state, and the two upper heating assemblies 4 are in a closed state; on the contrary, when the swing frame 41 swings upward, the upper heating The assembly 4 is upward, and the guide wheel frame 131 at the inner end of the upper heating assembly 4 moves to the two ends of the guide groove 13 towards x, and finally the upper heating assembly 4 is in an inclined state, and the middle is separated, so that the upper surface of the PCBA below is exposed, so that , through the mobility of the upper heating assembly 4 and the lower heating assembly 3, a relatively closed preheating space is formed during preheating to heat the upper and lower surfaces of the PCBA at the same time, ensuring that the PCBA is heated evenly and avoiding thermal shock; and after the preheating is completed, it can be Immediately separate and open, so that the upper and lower surfaces of the PCBA are exposed at the same time, and use the tin furnace device on the lower side and the manipulator device on the upper side to desolder and pick up the parts;

The position of the first x-guided rail slide assembly 11 is outside of the lower heating assembly 3 and the upper heating assembly 4, that is, the first x-guided rail slide assembly 11 is located outside the heating area to avoid unnecessary heat damage; The heating assembly 4 and the lower heating assembly 3 adopt infrared heating devices, and the two form an infrared preheating area for the circuit board.

As shown in Figure 10, the first y-direction rail slide assembly 14 and the first y-direction servo drive assembly 141 are installed on the bottom of the main frame 1 and the lower area of the PCBA fixing jig 2, and slide on the first y-direction rail. Jet-flow tin furnace assembly 5 is installed on seat assembly 14, and this jet-flow type tin furnace assembly 5 comprises tin furnace support 51, lift platform 52, tin furnace device 53, and wherein, tin furnace support 51 is cuboid frame, and its four A pair of longitudinal guide rods 511 are respectively installed in the middle part of a pair of surfaces in the side, and longitudinal guide rods 512 are respectively installed in the middle part of the other pair of surfaces. Rod bearing seat 514 is connected with the four corners of one described lifting platform 52; The bottom end of described longitudinal screw mandrel 511 is provided with synchronous wheel 515, is also provided with lifting motor 54 on one side of tin furnace support 51, and lifting motor 54 The output end of the output end is connected with the synchronous wheel at the bottom of the longitudinal screw mandrel 511 through the synchronous pulley transmission mechanism 541;

That is, through the working rotation of the lifting motor 54, the two longitudinal screw rods 511 are rotated synchronously through the synchronous pulley transmission mechanism 541, and then the lifting table 52 is generated by the vertical screw base 513, so that the tin on the lifting table 52 The furnace device 53 lifts together; the longitudinal guide rod 512 plays the role of supporting and stabilizing the lifting; and then drives the entire jet-flow tin furnace device 5 to move along the y-axis direction through the first y-direction servo drive assembly 141, and fixes the fixture with the PCBA 2's x-direction movement cooperates to realize the overall movement of the PCBA in the horizontal plane, so as to locate the position for desoldering and parts replacement; the jet-flow tin furnace device 5 itself can move up and down in the z-direction along its tin furnace bracket 51, Thereby realize the relative movement of the nozzle of the tin furnace device 53 and the PCBA welding position;

In combination with Fig. 11 and Fig. 12, a manipulator device 6 is installed on the top of the main frame 1 and above the PCBA fixing jig 2, and the manipulator device 6 includes a second y guide rail installed on the top of the main frame 1 The slide assembly 15 and the second y-direction servo drive assembly 151, the z-direction mounting plate 61 installed on the second y-direction rail slide assembly 15, the first z-direction rail slide assembly 611 installed on the z-direction mounting plate 61 And the first z-direction servo drive assembly 612 connected thereto, the rotating motor 62 and the reduction box 63 installed on the first z-direction rail slide assembly 611, the z-direction cylinder bracket 64 connected to the output end of the reduction box 63, The z-direction cylinder 641 installed in the z-direction cylinder bracket 64, and the clamping claw support plate 65 installed on both sides of the z-direction cylinder support 64, the clamping jaw mechanism installed on the inner side of the clamping jaw support plate 64 and connected with the z-direction cylinder 641 66; the second y-direction servo drive assembly 151 drives the sliding seat of the second y-guided rail slide assembly 15 to move along the y-direction; the z-direction cylinder 641 controls the loosening and clamping of the jaw mechanism 66, the rotating motor 62 and the reduction box 63 controls the rotation and angle of the entire z-direction cylinder 641 and its z-direction cylinder bracket 64 and the entire clamping jaw mechanism 66, so as to rotate to the most suitable clamping angle according to the angle and position of the connector on the PCBA to ensure the accuracy of the pullout and stable.

Furthermore, a hot air pipe 67 is respectively installed outside the two jaw bracket plates 65 of the manipulator device 6 , and the air outlet of the hot air pipe 67 faces the bottom of the jaw mechanism 66 . The hot air pipes 67 on both sides are used to auxiliary heat the upper surface of the circuit board, and perform thermal compensation on the circuit board during desoldering according to the needs, so as to prevent the incomplete melting of tin caused by too fast heat loss and lead to difficulties in pulling out parts, suitable for circuit boards When the thickness of the board is large, the solder hole is deep, and the electronic device has a structure such as a heat dissipation module, the desoldering operation is performed; for a normal or thin PCBA, the auxiliary heating of the hot air pipe 67 can reduce the tin immersion time, Avoid copper melting and other phenomena caused by excessive tin immersion time, thereby further improving the quality of rework soldering.

In the above-mentioned automatic rework machine: the z-direction cylinder support 64 back side of the manipulator device 6 is also connected with a vibrating motor 642, which can generate vibration through the work of the vibrating motor 642, so that the cylinder support 64 and the jaw mechanism 66 at its lower part vibrate, and its effect is After the circuit board is dipped in tin to remove tin, when the clamping jaw mechanism 66 clamps the device to be taken, the vibration generated by the vibration motor 642 is applied to the device, so that the device is more easily separated from the circuit board, and both the circuit board and the device can be used. Protective function to avoid damage to the circuit board caused by strong pulling parts.

As shown in Figures 11-14, in the above-mentioned automatic rework machine: the jaw mechanism 66 of the manipulator device 6 includes a first horizontal shaft 661 connected to the output end of the z-direction cylinder 641, and the two ends of the first horizontal shaft 661 are vertical Through the strip hole 651 on the jaw bracket plate 65, the strip hole 651 provides a movable space for the first horizontal axis 661 to rise and fall and limit the first horizontal axis 661; between the two jaw bracket plates 65, The lower sides of the first horizontal shaft 661 are respectively provided with second horizontal shafts 662 parallel thereto, and the two ends of each second horizontal shaft 662 are respectively pivotally connected with a pair of movable parts symmetrically arranged with respect to the first horizontal shaft 661. Clamping jaws 663, the clamping plate 664 is connected between the bottoms of the two movable clamping jaws 663 on the same second transverse axis 662, and the clamping plates 664 on both sides are arranged oppositely to form the clamping of the device; the movable clamping jaws 663 on the same side The upper part of the top is bent outwards and its upper end is respectively connected with a third horizontal shaft 665, and the two ends of the third horizontal shaft 665 on both sides are respectively connected to the two ends of the first horizontal shaft 661 through a connecting orifice 666; When the z-direction cylinder 641 moves downward, the first horizontal shaft 661 is pushed to move downward, and the first horizontal shaft 661 drives the third horizontal shaft 665 to swing through the connecting orifice 666. Since the third horizontal shaft 665 and the upper end of the movable jaw 663 The middle part of the movable jaw 663 is pivotally connected to the second horizontal shaft 662, so the third horizontal shaft 665 will swing outward around the second horizontal shaft 662, and then drive the upper end of the movable jaw 663 to swing outward. The two horizontal shafts 662 play the role of fulcrums, the lower end of the movable jaw 663 swings inwardly, and the movable jaw 663 on both sides forms a clamping action; otherwise, when the z-direction cylinder 641 is upward, the movable jaw 663 forms a separation action.

In the above-mentioned automatic rework machine, a horizontal connecting plate 652 is also connected between the two jaw bracket plates 65. The horizontal connecting plate 652 is located between the movable jaws 663 on both sides, and a through hole is opened in the middle of the horizontal connecting plate 652. There is a downward cross laser alignment lamp 653, and a needle-shaped cylinder 654 and a laser light baffle 655 connected to it are installed on the lower surface of the horizontal connecting plate 652. When the needle-shaped cylinder 654 push rod is stretched out, the laser The lamp baffle 655 blocks the bottom of the through hole in the middle of the horizontal connecting plate 652 and covers the cross laser alignment lamp 653. Its function is to prevent the tin vapor generated in the working process from adhering to the surface of the cross laser alignment lamp 653 and affecting its use. The cross laser alignment light 653 plays a protective role, that is, it can be covered when the positioning is completed, and it is turned on when positioning is required. An elastic buffer pad 667 is arranged between the clamping plate 664 and the movable jaw 663. The function of the elastic buffer pad 667 is that when there is incomplete tin melting and some pins of the device are still connected to the circuit board, if the clamping plate 664 and The movable jaw 663 is rigidly connected, and the device will be clamped too tightly, and the clamping force will be too large, resulting in forced pulling, which will easily cause damage to the device or circuit board; through the elastic buffer pad 667, when the above situation is encountered, the clip The holding plate 664 will release the device and avoid damage to the circuit board and the device.

In the above-mentioned automatic rework machine, a camera 613 is also installed on the back of the z-direction mounting plate 61, and the camera 613 is aimed at the operation area at the bottom of the gripper mechanism 66, and can take pictures and transmit the working conditions of the equipment in real time, and display them on the display screen, which is convenient for operation who make observations.

As shown in Fig. 4-Fig. 5, in the above-mentioned automatic rework machine, the PCBA fixing fixture 2 includes two x-direction bottom edge strips 21 connected with the slide seat of the first x-guiding rail slide assembly 11, erected vertically Two y-direction bottom strips 22 on the two x-direction bottom strips 21; two x-direction fixed side strips 23 with adjustment grooves are erected on the y-direction bottom strips 22, and the two x-direction fixed There are also two y-direction fixed side bars 24 with slide grooves between the ends of the side bars 23; a y-direction movable side bar 25 is connected between the two x-direction fixed side bars 23, and a y-direction movable side bar 25 is connected between the two y-direction side bars. An x-direction movable sidebar 26 is connected between the fixed sidebars 24; the x-direction movable sidebar 26, the y-direction movable sidebar 25, and one of the x-direction fixed sidebars 23 and the y-direction fixed sidebar 24 are respectively installed There is a PCBA clamping block 27;

The y-direction movable side bar 25 is arranged in the y direction, and the adjustment slot along the x-direction fixed side bar 23 moves in the x-axis direction, thereby adjusting the positioning distance in the x-direction to match the length of the PCBA; the x-direction movable side bar 26 is arranged in the x-direction , the chute of the fixed side strip 24 moves in the y-axis direction along the y-direction, thereby adjusting the positioning distance in the y-axis direction to match the width of the PCBA, so the PCBA fixing fixture can meet the fixing requirements of circuit boards of any size; the movable side There is a locking buckle on the bar or it is locked by screws;

Several support bars 28 are also arranged between the two x-direction bottom edge bars 21, each support bar 28 has several support studs 281; the positions of the support bars 28 and the support studs 281 are lower than the upper x The position of each support bar 28 can be adjusted according to the needs of the movable side bar 26 and the y-directed movable side bar 25. Its function is to realize multi-point support for the PCBA, avoid local deformation of the PCBA during the repair process, and improve the repair quality;

In the above-mentioned automatic rework machine, a protective plate 101 is provided on the periphery and top of the main frame 1, and an operating door 102 is provided on the front; the protective plate on the top is provided with an air exhaust port 103; A control area isolated from the guide rail slide assembly 11, the preheating device, the jet-flow tin furnace device 5, and the manipulator device 6 (the working area where it is located), and the main control cabinet 104 and the distribution box 105 are arranged in the control area. And peripheral devices such as a display screen 106, an operation keyboard and mouse 107, and a scanning gun 108 are arranged on the surface; a transformer 109 is arranged in the main frame 1 and on the side of the jet-flow tin furnace device 5 . The control area is isolated from the working area by a heat-insulating sealing material (not marked in the figure), so as to prevent the high temperature in the working area from affecting the electrical components in the control area.

In the utility model, the first x-guided rail slide assembly 11, the second x-guided slide assembly 12, the first y-guided slide assembly 14, the second y-guided slide assembly 15, etc. all adopt linear tracks The structure of adding sliders or sliding seats, and the servo drive components all adopt the method of servo motors plus screw rods and nuts. These are conventional technologies, so they will not be described again.

When the device of the utility model is running, first select the name of the through-hole device that needs to be repaired and desoldered through the software interface, and the system will automatically call out the relevant parameters (temperature, time, positioning), press the start button, and the infrared preheating zone will automatically Preheat the circuit board (150°C). After the preheating is completed, the upper and lower heating components in the preheating zone will automatically open, and the jet-flow tin furnace components will automatically wave and rise to the bottom of the through-hole device pins to be desoldered and repaired. At this time, the tin wave and the tin furnace will automatically rise to heat the pins of the device to be replaced, and at the same time, according to the program setting, start the mechanical device for automatically removing the device, and automatically remove the device. The operator only needs to replace the new device at this time. The device can be installed, and the tin wave and the tin furnace will automatically descend to complete the desoldering and repairing.

In the utility model, the two movable lower heating components and the upper heating component constitute the preheating device of the rework machine, which fully and evenly preheats the PCBA, so that the preheating area is at the same position as the unsoldering and pick-up plug-in area, Therefore, the circuit board does not need to leave the preheating area during work, which reduces heat loss, saves energy, shortens the tin dipping time, and improves the quality of rework; moreover, the rework position can be identified while preheating, without consuming moving time, which can greatly shorten the load. The board moving time is more than 70%, which improves the working efficiency; through the automatic drawing operation of the manipulator device, it can avoid the high temperature safety hazard and the inconvenience of manual operation, liberate the operator's hands, and improve the accuracy of the inserting operation;

In the utility model, the positioning of the processing position is realized by separately controlling the movement of the PCBA fixing fixture and the tin furnace device along the x-axis and the y-axis, and the operation is carried out in cooperation with the z-direction movement of the manipulator device and the tin furnace device to realize a full range of operations Covering can simplify the layout of the transmission structure and facilitate the assembly of the whole machine;

In addition, compared with the rework machine that needs to be moved from the preheating area to the processing area, the utility model does not require moving space, so the volume and occupied space of the whole machine are greatly reduced, which is convenient for equipment layout, packaging and transportation.

Claims (9)

1. a kind of automatic repairing machine of modified PCBA through hole direct inserting devices, the automatic repairing machine has a mainframe, its feature exists In：

It is provided with the middle part of the mainframe in horizontally disposed the first x direction guiding rails sliding assembly and the first x to servo-drive The PCBA fixed jigs being connected with the first x to servo-drive component are installed on component, the first x direction guiding rail sliding assemblies；

2nd x direction guiding rail sliding assemblies are installed below the middle part of mainframe, PCBA fixed jigs, the 2nd x direction guiding rails are slided The two ends of holder assembly are separately installed with heating component, and the bottom of each lower heating component is connected to lower heating component and driven Take offence cylinder, and two lower heating component drive cylinders direction in positioned opposite；

Being set up in the top of the middle part of mainframe, PCBA fixed jigs has a pair of x to guide groove, in x to above the two ends of guide groove points She You not an above heating component, and each at two jiaos of one side of upper heating component respectively with being arranged on two x to leading on guide groove Wheel carrier is flexibly connected；Two middle side parts of heating component are outer on each is connected with a swing frame, wherein the swing frame Two upper end pin are pivotally connected with the activity of upper heating component both sides, and two lower end pin are connected on bearing block by y to rotating shaft, and wherein One y is connected to rotating shaft with the first y to servomotor；

Lower zone in the bottom of mainframe, PCBA fixed jigs be provided with the first y direction guiding rails sliding assembly and the first y to Servo-drive component, jet flow tin furnace module is provided with the first y direction guiding rail sliding assemblies, and the jet flow tin furnace module includes Tin furnace cradle, lifting table plate, tin furnace device, wherein, tin furnace cradle is a pair of surface middle parts in cuboid framework, its four side A longitudinal screw mandrel is separately installed with, another pair surface middle part is respectively mounted Der Laengslenker, two longitudinal screw mandrels, two Der Laengslenkers Respectively by longitudinal nut seat, Der Laengslenker bearing block with being connected at the corner of lifting table plate described in one；The longitudinal screw mandrel Bottom is provided with synchronizing wheel, lifting motor is additionally provided with the side of tin furnace cradle, the output end of lifting motor is passed by synchronous pulley Motivation structure is connected with the synchronizing wheel of longitudinal screw mandrel bottom；

Upper area at the top of the mainframe, PCBA fixed jigs is provided with robot device, the robot device bag The 2nd y direction guiding rails sliding assembly and the 2nd y at the top of mainframe are included to servo-drive component, installed in the 2nd guide y Z on rail sliding assembly to installing plate, z is installed to the first z direction guiding rails sliding assembly on installing plate and the first z being attached thereto Electric rotating machine and reduction box to servo-drive component, on the first z direction guiding rail sliding assemblies, the output end with reduction box The z of connection to air cylinder support, installed in zs of the z into air cylinder support to cylinder and installed in folder from z to air cylinder support both sides Pawl supporting plate, the clip claw mechanism being connected on the inside of clamping jaw supporting plate and with z to cylinder.

2. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：In the machine Also it is separately installed with a warm-air pipe on the outside of two clamping jaw supporting plates of tool arm device, the air outlet of warm-air pipe is towards clip claw mechanism Bottom.

3. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：Manipulator is filled The air cylinder support back side put is also associated with vibration motor.

4. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：Manipulator is filled The clip claw mechanism put includes the first transverse axis being connected with z to the output end of cylinder, and the two ends of the first transverse axis are vertically located in clamping jaw In bar hole on supporting plate；Between two pieces of clamping jaw supporting plates, the lower section both sides of the first transverse axis further respectively have it is parallel with it The second transverse axis, the two ends of each second transverse axis are articulated with a pair relative to the activity folder that the first transverse axis is arranged symmetrically respectively Grip block is connected between two movable jaw bottoms on pawl, same second transverse axis；The top of the movable jaw of homonymy is in outside Bend and its upper end is connected to the 3rd transverse axis, the two ends of the 3rd transverse axis of both sides pass through a connection orifice plate and first respectively The two ends of transverse axis are flexibly connected.

5. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 4, it is characterised in that：In two clamping jaws A horizontal connecting plate is also associated between supporting plate, the horizontal connecting plate is located between the movable jaw of both sides, and level connection joint Through hole is offered in the middle part of plate and is equipped with a cross laser contraposition lamp directed downwardly, a pin is also equipped with the lower surface of horizontal connecting plate Shape cylinder and the laser lamp baffle plate being attached thereto, when aciculiform cylinder push-rod stretches out, laser lamp baffle plate blocks horizontal connecting plate The bottom of middle through-hole, covers cross laser contraposition lamp.

6. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 4, it is characterised in that：Grip block with Elastic buffering pad is provided between movable jaw.

7. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：In z to peace The back side of dress plate is also equipped with camera.

8. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：The PCBA Fixed jig includes two articles of x being connected with the slide of the first x direction guiding rail sliding assemblies to skirt rail, vertical two x that are erected at the bottom of to Two y on edge strip are to skirt rail；There are two x with regulating tank to fixed edge strip, this two to also erection on skirt rail in y X is to being additionally provided with two y with chute to fixed edge strip between the end of fixed edge strip；Two x are between fixed edge strip A y is connected with to movable edge strip, two y are connected with an x to movable edge strip between fixed edge strip；The x is to movable edge strip, y PCBA grip blocks are separately installed with to movable edge strip and one of x to fixed edge strip, y on the inside of fixed edge strip；Institute State two x to be additionally provided between skirt rail on several support bars, every support bar have several support protruded stigmas；Support bar and support The position of protruded stigma less than top x to movable edge strip and y to movable edge strip.

9. the automatic repairing machine of modified PCBA through hole direct inserting devices according to claim 1, it is characterised in that：In mainframe Periphery and top be provided with protective plate, the protective plate at top offers exhaust outlet；Mainframe interior side is provided with and the first x Cloth in direction guiding rail sliding assembly, preheating device, jet flow tin furnace device, the control area of robot device isolation, control area Master control cabinet, distribution box are equipped with, and on surface provided with display screen, operation key mouse and scanner；Mainframe is interior, jet flow tin stove The side of device is provided with transformer.