Dispensing equipment for chip processing

Abstract

The invention discloses dispensing equipment for chip processing, relates to the technical field of chip packaging, and aims to solve the technical problems that existing equipment is poor in material belt conveying adaptability, low in manual shutdown adjustment efficiency, insufficient in dispensing precision and prone to environmental interference in quality. The equipment comprises a rack, a conveying device, a dispensing device, a heating device, a fresh air device and an ion blowing device are integrated on the rack, and all the devices are electrically connected with a control device to achieve cooperative control; according to the equipment, the adaptability of the material belt does not need to be manually adjusted, the dispensing precision and the production efficiency are improved, the chip dispensing quality is guaranteed, and the flexible production requirement of chip processing is met.

Description

TECHNICAL FIELD

[0001] The application relates to the chip packaging technical field, in particular to a dispensing equipment for chip processing. BACKGROUND

[0002] The material belt used in chip processing has various specifications, and not only the width (common range 2mm-50mm) and thickness (0.1mm-1mm) are different, but also the positioning hole design of different intervals needs to be adapted to part of special chip material belts. However, the conveying system of the existing dispensing equipment has the following defects: the track interval adjustment depends on manual operation, the precision is low and the efficiency is poor, the track interval adjustment is mostly achieved by manually screwing the bolt, the adjustment process has no real-time detection feedback, and completely depends on the experience of the operator, not only time-consuming (20-30 minutes for single adjustment), but also the interval error often exceeds 0.5mm, which easily leads to the deviation, jamming, even scratching and damage of the chip or the edge of the material belt in the conveying process, and causes material loss. SUMMARY

[0003] In order to solve the above problems, the application provides a dispensing equipment for chip processing.

[0004] A dispensing equipment for chip processing, comprising a rack, a conveying device, a dispensing device and a heating device arranged on the rack, each device is electrically connected with a control device to realize cooperative control; the conveying device comprises a track for conveying the material belt, further comprises a bidirectional driving mechanism for driving the bidirectional movement of the material belt, a variable distance mechanism for adjusting the track interval, a pressing mechanism for stabilizing the position of the material belt, and a counting mechanism for detecting the movement length of the material belt; the dispensing device comprises a dispensing head and a visual detection module, the visual detection module is used for detecting the position of the chip on the material belt to assist the accurate positioning of the dispensing head.

[0005] By adopting the above technical scheme, the self-adaptive conveying of the material belt can be realized through the cooperation of the bidirectional driving, variable distance, pressing and counting mechanisms of the conveying device, without manual stop adjustment of the width adaptability of the material belt; at the same time, the visual detection module provides a position reference for the dispensing head, which preliminarily solves the problems of poor material belt conveying adaptability and insufficient dispensing precision of the existing equipment, and provides automatic basic guarantee for chip processing and dispensing.

[0006] Further, the bidirectional driving mechanism comprises a driving wheel, a driven wheel and a driving motor, the driving wheel is fixedly connected with the output shaft of the driving motor, the driven wheel is arranged oppositely above and below the driving wheel, and the driving wheel and the driven wheel press the material belt and drive the movement of the material belt under the driving of the driving motor.

[0007] By adopting the above technical scheme, the driving motor can drive the driving wheels to rotate forward and reverse, and the upper and lower opposite driven wheels can press the material belt, so that the material belt can be directly moved in two directions; when the dispensing positioning deviation occurs, the material belt does not need to be manually disassembled and recalibrated, but only needs to be reversed by the driving motor to complete the reverse fine adjustment, so that the production process is not interrupted and the production continuity is improved.

[0008] Further, the counting mechanism includes a counting gear and a counting sensor, a plurality of evenly distributed holes are formed on both sides of the material belt to form counting holes, the tooth part of the counting gear is engaged with the counting holes, and the counting sensor is fixedly installed beside the counting gear and is used for detecting the number of rotations of the counting gear.

[0009] By adopting the above technical scheme, when the material belt moves, the counting holes of the material belt can drive the counting gear to rotate synchronously, the counting sensor can detect the number of rotations of the gear in real time, and the control device can accurately convert the actual moving length of the material belt according to the number of gear teeth and the diameter of the graduated circle, so that the dispensing position deviation caused by the conveying length error is avoided, and a precise conveying reference for the dispensing head positioning is provided.

[0010] Further, the abutting mechanism includes an abutting plate and an abutting cylinder, the abutting plate is fixedly connected to the end of the piston rod of the abutting cylinder, the abutting plate is arranged above the track, and the abutting plate is driven by the abutting cylinder to move in a direction perpendicular to the length direction of the track to abut or release the material belt.

[0011] By adopting the above technical scheme, when the material belt is conveyed to the dispensing station, the abutting cylinder can drive the abutting plate to quickly move downward to press the material belt, the static friction is increased by cooperating with the stop teeth on the track, and the material belt is quickly stopped; after the dispensing is completed, the abutting plate moves upward to release, so that the material belt does not deviate during the dispensing process, and the positioning stability and the conveying efficiency are considered.

[0012] Further, the distance changing mechanism includes a distance changing movable plate and a sliding pair, the sliding rail of the sliding pair is fixedly installed on the rack, the distance changing movable plate is fixedly installed on the sliding block of the sliding pair, and the track is fixedly installed on the distance changing movable plate; the distance changing mechanism further includes a distance changing driving assembly and a screw rod assembly, the screw rod assembly includes a screw rod and a threaded block, the distance changing driving assembly is fixedly installed on the rack, the screw rod is in transmission connection with the output end of the distance changing driving assembly, the threaded block is sleeved on the screw rod and is fixedly connected with the distance changing movable plate, the number of the threaded blocks matches the number of the distance changing movable plates, and the distance changing driving assembly drives the distance changing movable plate to move along the sliding rail of the sliding pair through the screw rod assembly to adjust the distance between the tracks.

[0013] By adopting the technical scheme, the distance-variable driving assembly drives the distance-variable movable plate to move along the slide rail through the screw rod assembly, realizes automatic adjustment of the track spacing, and adapts to different width material belts; compared with manual bolt adjustment, this mode does not need to rely on experience, shortens the adjustment time, reduces the spacing error, avoids material belt deviation, jamming or scraping damage, and meets the flexible production demand of multiple specifications of material belts.

[0014] Further, the dispensing device further comprises a three-axis driving assembly, the three-axis driving assembly is fixedly installed on the rack, the dispensing head is fixedly installed on the output end of the three-axis driving assembly, and the three-axis driving assembly is used to drive the dispensing head to move in three-dimensional space to realize precise dispensing.

[0015] By adopting the technical scheme, the three-axis driving assembly can drive the dispensing head to move flexibly in X, Y and Z three-dimensional space, real-time adjust the position of the dispensing head in combination with the chip position data fed back by the visual detection module, ensure that the dispensing head is accurately aligned with the dispensing area of the chip, meet the fine dispensing demand of the chip, and reduce defective products caused by dispensing position deviation.

[0016] Further, a heating device is further arranged on the moving path of the material belt, the heating device comprises a heating support, a heating element fixedly installed on the heating support and a temperature sensor, the heating device further comprises a distance adjusting cylinder for adjusting the distance between the heating element and the material belt, and the output shaft of the distance adjusting cylinder is connected with the heating support.

[0017] By adopting the technical scheme, the heating device is arranged downstream of the dispensing device, the heating element can accelerate the curing of the glue after dispensing and prevent the material belt from curling; the distance adjusting cylinder drives the heating support to ascend and descend, adjusts the distance between the heating element and the material belt, and the temperature sensor feeds back the temperature in real time, so that closed-loop control is formed, the chip is prevented from being damaged due to overheating or the curing efficiency is low due to too low temperature, and the curing effect and the safety of the chip are considered.

[0018] Further, a distance sensor for detecting the spacing of the tracks is further arranged on the track, and the distance sensor is fixedly installed on the track and electrically connected with the control device.

[0019] By adopting the technical scheme, the distance sensor detects the actual spacing of the tracks in real time and feeds back the data to the control device, the control device can correct the adjustment process of the distance-variable mechanism in real time, and closed-loop control of the spacing of the tracks is formed; spacing deviation caused by mechanical error is avoided, the spacing of the tracks is accurately adapted to the width of the material belt, and the stability of the material belt conveying is improved.

[0020] Further, the equipment further comprises a fresh air device, the fresh air device is fixedly installed on the rack and used to provide clean air to the dispensing area.

[0021] By adopting the technical scheme, the fresh air device can deliver clean air to the dispensing area to form a local clean environment and block dust from the outside; the dust is prevented from adhering to the surface of the chip or mixing into the glue, the problems such as insufficient adhesion of the glue and short circuit of the chip are prevented, and the dispensing quality stability is ensured.

[0022] Further, the device further comprises ion blowing devices, the ion blowing devices are fixedly installed on the rack, and one of the ion blowing devices is arranged at the front segment and the rear segment of the dispensing of the material belt and the chip.

[0023] By adopting the technical scheme, the ion blowing device at the front segment of the dispensing can remove dust on the surface of the material belt and the chip and neutralize static electricity, so that the dispensing effect is not affected by the dust adsorbed by static electricity; the ion blowing device at the rear segment of the dispensing can neutralize residual static electricity, so that the dust is prevented from being adsorbed by static electricity or the chip is prevented from being damaged in the subsequent process, and the cleanliness and safety of the chip are comprehensively ensured.

[0024] In summary, the present application has at least one of the following beneficial technical effects: 1. The bidirectional driving mechanism realizes bidirectional movement of the material belt, manual disassembly and calibration of the material belt are not required; the pitch changing mechanism automatically adjusts the track pitch, and is closed-loop controlled in cooperation with the distance sensor; the clamping assembly is adapted to material belts with different thicknesses, manual shutdown adjustment is not required throughout the whole process, production efficiency is greatly improved, and the flexible production demand is met.

[0025] 2. The counting mechanism accurately detects the movement length of the material belt, the visual detection module is combined with the three-axis driving assembly to realize accurate positioning of the dispensing head; the fresh air device provides a clean environment, the ion blowing device removes dust and static electricity, and the heating device controls temperature and solidification, so that the dispensing defective rate is reduced through multi-link cooperation, and the quality stability is ensured.

[0026] 3. The mechanisms of the device are automatically and cooperatively operated through the control device, manual operation is reduced; the track pitch is accurately adjusted, the clamping force is adapted to material belts with different thicknesses, the material belt is prevented from being deviated, crushed or scratched, the loss rate of the chip and the material belt is reduced, manual error risk is reduced, and the economic efficiency of the operation of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the device, mainly showing the overall structure of the device; Figure 2 is another perspective view of the device, mainly showing the overall structure of the device; Figure 3 is a perspective view of the device without a shell, mainly showing the overall internal structure of the device; Figure 4 mainly shows the counting mechanism; Figure 5 mainly shows the dispensing device; Figure 6Mainly show the abutting mechanism; Figure 7 Mainly show the heating device; Figure 8 is a perspective view of the bidirectional driving mechanism, mainly showing the driving wheel and the driven wheel; Figure 9 is a perspective view of the bidirectional driving mechanism, mainly showing the clamping assembly; Figure 10 is a perspective view of the clamping assembly from another angle; Figure 11 Mainly show the overall structure of the distance changing mechanism; Figure 12 Mainly show the specific structure of the distance changing mechanism; Figure 13 Mainly show the support plate and the bearing.

[0028] Explanation of reference signs: 10, track; 101, stop tooth; 11, material belt; 111, counting hole; 12, abutting plate; 13, abutting cylinder; 14, distance changing motor; 15, belt containing plate; 16, transmission belt; 17, belt wheel; 18, driving wheel set; 20, support plate; 21, bearing; 22, screw rod; 23, threaded block; 24, distance changing movable plate; 25, sliding pair; 26, distance sensor; 31, driving wheel; 32, driven wheel; 33, driving motor; 34, fixed handle; 35, swing seat; 351, movable groove; 36, clamping force adjusting cylinder; 37, tension spring; 38, shifting pair; 41, counting gear; 42, counting sensor; 51, dispensing head; 52, three-axis driving assembly; 53, visual detection module; 61, heating element; 62, distance changing cylinder; 63, temperature sensor; 64, heating support; 65, ion blowing device; 66, stainless steel air nozzle; 71, fresh air device; 100, rack; 110, shell; 120, control device; 130, three-color lamp; 140, universal wheel; 150, ground foot. DETAILED DESCRIPTION

[0029] The application will be further described in detail below with reference to the accompanying drawings.

[0030] The technical solutions in the application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the application, but not all of them. The components of the application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the application.

[0031] This application discloses a dispensing device for chip processing, referring to... Figure 1 and Figure 2 The system includes a frame 100, a control device 120, and a conveying device, a dispensing device, a heating device, a fresh air device 71, and an ion blowing device 65 mounted on the frame 100. The conveying device is used to accurately transport the material strip 11, the dispensing device is used to dispense the chip, the heating device is used to accelerate the curing of the adhesive after dispensing, the fresh air device 71 is used to ensure the cleanliness of the dispensing area, and the ion blowing device 65 is used to eliminate static electricity and dust on the surface of the material strip 11 and the chip. All devices are electrically connected to the control device 120, which coordinates their operation.

[0032] Reference Figure 3 and Figure 6 Specifically, the conveying device includes two tracks 10 for conveying the material belt 11, a bidirectional drive mechanism, a pitch-changing mechanism, a clamping mechanism, and a counting mechanism. The two tracks 10 are arranged parallel to each other at intervals along the conveying direction of the material belt 11, with the bottom surface of the material belt 11 contacting the top surface of the track 10 and sliding along the length of the track 10. The distance between the two tracks 10 is adapted to the width of the material belt 11. Several chips are placed at intervals on the material belt 11 and are synchronously conveyed to the dispensing station along with the material belt 11.

[0033] Reference Figure 11 , Figure 12 and Figure 13 The pitch-changing mechanism includes two pitch-changing movable plates 24, two sets of sliding pairs 25, a pitch-changing drive assembly, and a lead screw assembly. Each sliding pair 25 includes a slide rail and a slider. The slide rail is fixedly mounted on the frame 100 along a direction perpendicular to the length of the track 10. The slider is fixedly connected to the bottom surface of the pitch-changing movable plate 24. The two tracks 10 are respectively fixedly mounted on the top surfaces of the two pitch-changing movable plates 24, allowing the pitch-changing movable plates 24 to drive the tracks 10 to slide along the slide rails.

[0034] Reference Figure 11 , Figure 12 and Figure 13 The variable pitch drive assembly includes a variable pitch motor 14, a belt receiving plate 15, and a drive pulley set 18. The belt receiving plate 15 is bolted to the frame 100. Two pulleys 17 are horizontally spaced inside the belt receiving plate 15, and the two pulleys 17 are connected by a tensioned drive belt 16. The variable pitch motor 14 is fixedly mounted on the outer wall of the belt receiving plate 15, and its output shaft extends through the side wall of the belt receiving plate 15 and into the interior. It is connected to the drive belt 16 via the drive pulley set 18, enabling the variable pitch motor 14 to drive the two pulleys 17 to rotate via the drive belt 16.

[0035] Reference Figure 11 , Figure 12 andFigure 13 The screw rod assembly comprises two screw rods 22 and two threaded blocks 23. The two screw rods 22 are coaxially fixedly connected with the two pulleys 17 one by one. When the transmission belt 16 drives the pulley 17 to rotate, the screw rod 22 can be synchronously driven to rotate. A plurality of support plates 20 are fixedly arranged on the rack 100 along the length direction of the screw rod 22. The top of each support plate 20 is embedded with a bearing 21. The two ends of the screw rod 22 are respectively arranged in the inner hole of the bearing 21 of the corresponding support plate 20. The horizontal rotation support of the screw rod 22 is realized through the bearing 21, so as to ensure the coaxiality of the screw rod 22 during rotation.

[0036] With reference to Figure 11 , Figure 12 and Figure 13 , the threaded block 23 corresponds to the screw rod 22 one by one. The threaded block 23 is sleeved on the screw rod 22 through internal threads and is fixedly connected with the side wall of the variable-distance movable plate 24. When the variable-distance driving assembly operates, the two variable-distance movable plates 24 are driven by the screw rod assembly to move towards or away from each other along the slide rail of the sliding pair 25, so as to adjust the distance between the two tracks 10. In addition, a plurality of distance sensors 26 are fixedly installed on the inner side wall of the track 10. The distance sensor 26 is preferably a laser distance sensor 26. The distance sensor 26 is electrically connected with the control device 120. The actual distance between the two tracks 10 can be detected in real time. The detection data is fed back to the control device 120, so as to form a closed-loop control of distance adjustment.

[0037] With reference to Figure 8 , Figure 9 and Figure 10 , the bidirectional driving mechanism comprises a driving wheel 31, a driven wheel 32, a driving motor 33 and a clamping assembly. The driving motor 33 is fixedly installed on the side wall of the variable-distance movable plate 24 through a motor support. The wheel shaft of the driving wheel 31 is installed on the variable-distance movable plate 24 through a rolling bearing 21. One end of the wheel shaft of the driving wheel 31 is connected with the driving motor 33 through an intermediate transmission assembly. The driving wheel 31 is driven to rotate in forward and reverse directions by the driving motor 33.

[0038] With reference to Figure 8 , Figure 9 and Figure 10 , the driven wheel 32 is arranged opposite to the driving wheel 31. The track 10 is provided with a avoiding gap at the position corresponding to the driving wheel 31 and the driven wheel 32. The top surface of the driving wheel 31 and the bottom surface of the driven wheel 32 can be in contact with the bottom surface and the top surface of the material belt 11 respectively, so as to clamp the material belt 11 from top to bottom. The clamping assembly comprises a fixed handle 34, a swing seat 35, a clamping force adjusting cylinder 36 and a tension spring 37. The fixed handle 34 is fixedly installed on the top surface of the variable-distance movable plate 24 through bolts. One end of the swing seat 35 is hinged to the fixed handle 34 through a rotating shaft and can rotate around the rotating shaft.

[0039] With reference to Figure 8 , Figure 9 andFigure 10 The clamping force adjusting cylinder 36 is fixedly installed on the side of the variable distance movable plate 24 through a cylinder support, and the output shaft end thereof is hingedly connected to one end of the swing base 35 away from the fixed handle 34. One end of the tension spring 37 is fixedly connected to one end of the swing base 35 away from the fixed handle 34, and the other end thereof is fixedly connected to the side of the variable distance movable plate 24. Under normal circumstances, the swing base 35 has a tendency to rotate towards the variable distance movable plate 24 through the pulling force of the tension spring 37, so that the driven wheel 32 always maintains the pressing force towards the driving wheel 31.

[0040] Referring to Figure 8 , Figure 9 and Figure 10 , the top surface of the swing base 35 is fixedly installed with a pushing pair 38, which comprises a slide rail and a slide block arranged in the horizontal direction. The slide rail is fixedly connected to the side of the swing base 35, and the slide block is slidable along the slide rail. The wheel shaft of the driven wheel 32 is fixedly connected to the slide block of the pushing pair 38 through an L-shaped connecting handle. The driven wheel 32 can freely rotate around its wheel shaft, and the wheel shaft does not rotate. The swing base 35 is provided with an activity groove 351 extending in the horizontal direction at a position corresponding to the wheel shaft of the driven wheel 32. The wheel shaft of the driven wheel 32 is arranged in the activity groove 351, and the width of the activity groove 351 is greater than the diameter of the wheel shaft of the driven wheel 32, so as to provide a clearance for the horizontal movement of the wheel shaft of the driven wheel 32.

[0041] Referring to Figure 8 , Figure 9 and Figure 10 , when it is necessary to adapt to the material belt 11 with different thicknesses, the clamping force adjusting cylinder 36 drives the swing base 35 to rotate around the rotating shaft of the fixed handle 34, so as to realize the position adjustment of the driven wheel 32 in the height direction, and change the distance between the driven wheel 32 and the driving wheel 31. Since the driven wheel 32 moves along an arc trajectory during the rotation of the swing base 35, it will be misaligned with the driving wheel 31 in the vertical direction. At this time, the slide block is moved along the slide rail by the pushing pair 38, so as to adjust the horizontal position of the driven wheel 32, and make the driven wheel 32 and the driving wheel 31 restore the vertical alignment state.

[0042] Referring to Figure 4 , Figure 6 and Figure 8 , the counting mechanism comprises a counting gear 41 and a photoelectric counting sensor 42. The counting gear 41 is installed on the top surface of the variable distance movable plate 24 through a rotating shaft and a rolling bearing 21, and the gear teeth thereof are arranged towards the material belt 11. The two side edges of the material belt 11 are provided with a plurality of positioning holes uniformly distributed along the length direction, so as to form counting holes 111 adapted to the gear teeth of the counting gear 41. The gear teeth of the counting gear 41 are engaged with the counting holes 111.

[0043] Referring to Figure 4 , Figure 6 and Figure 8The photoelectric counting sensor 42 is fixedly installed on the side of the counting gear 41 through a support, and a detection end thereof faces the gear teeth of the counting gear 41, and is used for detecting the number of rotations of the counting gear 41. When the bidirectional driving mechanism drives the material belt 11 to move along the track 10, the material belt 11 drives the counting gear 41 to rotate through the counting hole 111, and the photoelectric counting sensor 42 transmits a detected rotation number signal to the control device 120. The control device 120 converts the actual moving distance of the material belt 11 according to the number of gear teeth of the counting gear 41 and the diameter of the graduated circle, so as to realize accurate metering of the conveying length of the material belt 11.

[0044] With reference to Figure 6 and Figure 7 The abutting mechanism includes an abutting plate 12 and an abutting cylinder 13. The abutting cylinder 13 is fixedly installed on the top surface of the variable-distance movable plate 24 through a cylinder seat, and a piston rod thereof is arranged in a vertical direction. The abutting plate 12 is fixedly connected to the end of the piston rod of the abutting cylinder 13 through a bolt. The abutting plate 12 is horizontally arranged above the track 10, and a vertical projection thereof partially coincides with the top surface of the track 10. The abutting cylinder 13 can drive the abutting plate 12 to move in a vertical direction (i.e., a direction perpendicular to the length of the track 10), so as to realize compression or loosening of the material belt 11.

[0045] With reference to Figure 6 and Figure 7 When the material belt 11 is conveyed to a dispensing station, i.e., the chip is to be dispensed, the control device 120 controls the abutting cylinder 13 to drive the abutting plate 12 to move downward, so as to compress the material belt 11 on the top surface of the track 10, and to play a role of stopping and positioning the material belt 11. In order to improve the stopping effect, corrugated teeth are arranged on the side of the bearing surface of the track 10, so as to form a stopping tooth 101 structure. This structure can increase the static friction between the material belt 11 and the track 10, so as to ensure that the material belt 11 is quickly and stably stopped, and to avoid deviation of the material belt 11 in the dispensing process.

[0046] With reference to Figure 3 and Figure 5 The dispensing device includes a dispensing head 51, a visual detection module 53, and a three-axis driving assembly 52. The three-axis driving assembly 52 is fixedly installed on the top of the rack 100 through a bolt. The dispensing head 51 is detachably installed on the output end of the three-axis driving assembly 52 through a quick-change joint. The three-axis driving assembly 52 drives the dispensing head 51 to move in a three-dimensional space, so as to realize accurate dispensing of the chip. In this embodiment, a conventional heater is arranged in the dispensing head 51, so as to maintain the fluidity of the glue in the internal pipeline of the dispensing head 51.

[0047] With reference to Figure 3 and Figure 5The three-axis driving assembly 52 adopts a conventional linear module structure, specifically including an X-axis linear module, a Y-axis linear module, and a Z-axis linear module. The Y-axis linear module is fixedly installed on the top surface of the rack 100 along the length direction of the rack 100, the X-axis linear module is slidingly connected to the output slider of the Y-axis linear module along a direction perpendicular to the Y-axis, the Z-axis linear module is slidingly connected to the output slider of the X-axis linear module along a vertical direction, and the glue dispensing head 51 is fixed to the bottom of the output slider of the Z-axis linear module.

[0048] With reference to Figure 3 and Figure 5 , the X-axis, Y-axis, and Z-axis linear modules are each provided with a precision grating ruler, the grating ruler is electrically connected with the control device 120, closed-loop displacement control can be achieved, and the positioning accuracy of the three-axis driving assembly 52 is ensured to be ≤±0.005 mm. The visual detection module 53 is fixedly connected with the output slider of the Z-axis linear module through a support, the detection lens thereof faces the surface of the material belt 11, is arranged adjacent to the glue dispensing head 51 along the vertical direction, is used for detecting the actual position of the chip on the material belt 11, and feeds back position data to the control device 120. The control device 120 drives the three-axis driving assembly 52 to adjust the position of the glue dispensing head 51 according to the data, and ensures that the glue dispensing head 51 accurately aligns with the glue dispensing area of the chip.

[0049] With reference to Figure 3 and Figure 7 , a heating device is arranged on the conveying path of the material belt 11 along the conveying direction. The heating device includes a heating support 64, a heating element 61, a temperature sensor 63, and a distance adjusting cylinder 62. The heating element 61 is preferably a resistance wire heater, the distance adjusting cylinder 62 is fixedly installed on the bottom of the rack 100 through a cylinder support, the piston rod thereof is arranged upward along the vertical direction, the heating support 64 is fixedly connected to the end of the piston rod of the distance adjusting cylinder 62 and synchronously rises and falls with the piston rod. The resistance wire heater is fixedly installed on the top surface of the heating support 64 along the length direction of the material belt 11, the heating area thereof covers the width direction of the material belt 11, the temperature sensor 63 is arranged adjacent to the resistance wire heater and is electrically connected with the control device 120, and is used for detecting the temperature of the resistance wire heater in real time. The length of the resistance wire heater is set according to actual requirements, and the longer the length of the resistance wire heater is, the larger the area corresponding to the heating of the material belt 11 is.

[0050] With reference to Figure 3 and Figure 7 , in the embodiment, if the effect of rapid glue curing is to be achieved, the heating device can be arranged in the downstream area along the conveying direction of the material belt 11, for accelerating the curing process of the glue after dispensing.

[0051] With reference to Figure 3 and Figure 7In the embodiment of the present application, the material belt 11 is prone to slight warping, wrinkling or unevenness due to material characteristics in storage, transportation or low-temperature environment. The heating bottom can temporarily soften the material of the material belt 11 by mild heating and fit the device platform, eliminating deformation errors. If the heating device is evenly distributed on the bottom of the material belt 11 and the heating range needs to cover the material belt 11, the effect of correcting the deformation of the material belt 11 can be achieved.

[0052] With reference to Figure 3 and Figure 7 In the embodiment of the present application, the distance adjusting cylinder 62 can drive the heating bracket 64 to ascend and descend, thereby adjusting the distance between the resistance wire heater and the bottom surface of the material belt 11. The control device 120 can accurately control the heating temperature of the material belt 11 according to the detection data of the temperature sensor 63 and the distance adjustment condition, thereby avoiding damage to the chip due to excessive temperature or affecting the curing efficiency due to low temperature.

[0053] With reference to Figure 3 and Figure 7 In the embodiment of the present application, the distance adjusting cylinder 62 can also be additionally provided with a conventional linear driving structure to change the heating area of the heating element 61 and improve flexibility.

[0054] With reference to Figure 1 and Figure 2 The fresh air device 71 is fixedly installed on the top of the rack 100 through a bracket, and the air outlet thereof faces the dispensing area, for conveying filtered clean air to the dispensing area to prevent external dust from entering the dispensing area and polluting the chip or glue, thereby ensuring the dispensing quality.

[0055] With reference to Figure 1 and Figure 2 The ion blower device 65 is fixedly installed on the rack 100 through a mounting seat and is respectively arranged at the upstream (before dispensing) and downstream (after dispensing) of the dispensing device along the conveying direction of the material belt 11. The ion blower device 65 includes an ion generator and a stainless steel nozzle 66. The ion generator is conventional. The output end of the ion generator (not shown in the figure) is in communication with the nozzle. The air outlet of the nozzle faces the surface of the material belt 11 and can blow ion wind to the surface of the material belt 11 and the chip to remove floating dust attached to the surface and neutralize static electricity, thereby preventing static electricity from attracting dust or damaging the chip.

[0056] With reference to Figure 1 and Figure 2 The rack 100 is further provided with a housing 110 for sealing the working area. The control device 120 is an interactive computer installed on the housing 110. The housing 110 is further provided with a three-color lamp 130 at the top thereof to display the state of the device.

[0057] With reference to Figure 1 and Figure 2The bottom of the rack 100 is also fixed with universal wheels 140 and ground feet 150, for improving the moving convenience of the equipment.

[0058] The implementation principle of the embodiment of the present application is: 1. Equipment starting and preparation The operator adjusts the ground feet 150 at the bottom of the rack 100 to make the equipment horizontal, and locks the universal wheels 140 to prevent displacement. The protective shell 110 is closed, the equipment is started through the interactive computer on the shell 110, the control device 120 initializes parameters, and the three-color lamp 130 flashes yellow (standby).

[0059] The adjustment instruction is issued according to the width of the material belt 11: the control device 120 drives the variable-pitch motor 14 to operate, the motor drives the transmission belt 16 in the belt containing plate 15 through the driving wheel set 18, and then drives the two belt wheels 17 to rotate. The belt wheels 17 synchronously drive the lead screws 22 to rotate, and the threaded blocks 23 on the lead screws 22 drive the variable-pitch movable plate 24 to move along the sliding pair 25. The track 10 is adjusted in distance with the movable plate, the distance sensor 26 on the track 10 feeds back data, and after the distance is adjusted, the motor stops, and the three-color lamp 130 turns green.

[0060] 2. Installation and conveying of the material belt 11 The operating door of the shell 110 is opened, and the material belt 11 is placed on the track 10. The control device 120 drives the clamping cylinder, the piston rod pushes the swing seat 35 to rotate, and the driven wheel 32 is lifted to leave space. The material belt 11 is inserted between the driving wheel 31 and the driven wheel 32, the cylinder is retracted, the tension spring 37 pulls the swing seat 35 to make the driven wheel 32 press the material belt 11. If the driven wheel 32 is misaligned with the driving wheel 31, the sliding block of the driving pair 38 is adjusted.

[0061] The control device 120 drives the motor 33 to drive the driving wheel 31 to rotate forward or reverse, and the material belt 11 is moved along the track 10 through friction, and the driven wheel 32 rotates with the material belt 11. The counting hole 111 of the material belt 11 drives the counting gear 41 to rotate, the side optical sensor measures the gear rotation, the control device 120 converts the movement distance of the material belt 11, and precise conveying is realized.

[0062] 3. Positioning before dispensing The counting mechanism feeds back the material belt 11 to the dispensing station, the control device 120 drives the abutting cylinder 13, the piston rod pushes the abutting plate 12 to move downward to press the material belt 11, the track 10 stops the gear 101 to increase the friction, the material belt 11 is quickly stopped, and the driving motor 33 is locked.

[0063] The visual detection module 53 takes the chip image, recognizes the position deviation and feeds back. The control device 120 drives the three-axis driving assembly 52 (X / Y / Z-axis module) to adjust the position of the dispensing head 51, so that it is aligned with the dispensing area of the chip.

[0064] 4. Dispensing operation After the positioning of the dispensing head 51, glue is dispensed according to preset parameters, and the dispensing head 51 is moved along the track under the driving of the three-axis assembly. During dispensing, the fresh air device 71 sends clean air, and the front ion blower device 65 blows off floating dust and neutralizes static electricity.

[0065] 5. Dispensing and finishing After single-chip dispensing, the material belt 11 is lifted to loosen the material belt 11 against the plate 12, and the drive motor 33 restarts the material belt 11 to the heating area. The control device 120 drives the distance adjustment cylinder 62 to drive the heating bracket 64 to move upward, adjusting the distance between the resistance wire heater and the material belt 11. The temperature sensor 63 feeds back data, and the control device 120 controls the temperature of the heater to accelerate the curing of the glue.

[0066] After curing, the material belt 11 is destaticized by the rear ion blower device 65. The control device 120 collects data throughout the process, and when an abnormality occurs, a pop-up window on the computer will alarm, the three-color lamp 130 will turn red and be powered off. After the batch is completed, the machine is stopped and the door is opened to take out the material belt 11, and the universal wheel 140 can be moved.

[0067] The above only describes the embodiments of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dispensing device for chip processing, characterized in that, The device includes a frame (100), a conveying device, a dispensing device, and a heating device mounted on the frame (100). The conveying device includes a track (10) for conveying a material strip (11). The conveying device also includes a bidirectional drive mechanism for driving the material strip (11) to move in both directions, a pitch-changing mechanism for adjusting the spacing of the track (10), a clamping mechanism for stabilizing the position of the material strip (11), and a counting mechanism for detecting the moving length of the material strip (11). The dispensing device includes a dispensing head (51) and a vision inspection module (53). The vision inspection module (53) is used to detect the position of the chip on the material strip (11). The pitch-changing mechanism includes a pitch-changing movable plate (24), a sliding pair (25), a pitch-changing drive assembly, and a lead screw assembly.

2. The dispensing equipment for chip processing according to claim 1, characterized in that, The slide rail of the sliding pair (25) is fixedly installed on the frame (100), the variable pitch movable plate (24) is fixedly installed on the slider of the sliding pair (25), and the track (10) is fixedly installed on the variable pitch movable plate (24). The lead screw assembly includes a lead screw (22) and a threaded block (23). The variable pitch drive assembly is fixedly installed on the frame (100). The lead screw (22) is connected to the output end of the variable pitch drive assembly. The threaded block (23) is fitted on the lead screw (22) and fixedly connected to the variable pitch movable plate (24). The number of threaded blocks (23) matches the number of variable pitch movable plates (24). The variable pitch drive assembly drives the variable pitch movable plate (24) to move along the slide rail of the sliding pair (25) through the lead screw assembly to adjust the track (10) spacing.

3. The dispensing equipment for chip processing according to claim 1, characterized in that, The counting mechanism includes a counting gear (41) and a counting sensor (42). The material belt (11) has several evenly distributed holes on both sides to form counting holes (111). The teeth of the counting gear (41) mesh with the counting holes (111). The counting sensor (42) is fixedly installed on the side of the counting gear (41) and is used to detect the number of rotations of the counting gear (41).

4. The dispensing equipment for chip processing according to claim 1, characterized in that, The clamping mechanism includes a clamping plate (12) and a clamping cylinder (13). The clamping plate (12) is fixedly connected to the piston rod end of the clamping cylinder (13). The clamping plate (12) is placed above the track (10). The clamping plate (12) is driven by the clamping cylinder (13) to move in a direction perpendicular to the length direction of the track (10) to clamp or loosen the material belt (11).

5. The dispensing equipment for chip processing according to claim 1, characterized in that, The bidirectional drive mechanism includes a drive wheel (31), a driven wheel (32), and a drive motor (33). The drive wheel (31) is fixedly connected to the output shaft of the drive motor (33). The driven wheel (32) is arranged vertically opposite to the drive wheel (31). The drive wheel (31) and the driven wheel (32) press the material belt (11) together and drive the material belt (11) to move under the drive of the drive motor (33).

6. The dispensing equipment for chip processing according to claim 1, characterized in that, The dispensing device also includes a three-axis drive assembly (52), which is fixedly mounted on the frame (100). The dispensing head (51) is fixedly mounted on the output end of the three-axis drive assembly (52). The three-axis drive assembly (52) is used to drive the dispensing head (51) to move in three-dimensional space to achieve precise dispensing.

7. The dispensing equipment for chip processing according to claim 1, characterized in that, A heating device is also provided on the moving path of the material belt (11). The heating device includes a heating bracket (64), a heating element (61) fixedly installed on the heating bracket (64), and a temperature sensor (63). The heating device also includes a distance adjustment cylinder (62) for adjusting the distance between the heating element (61) and the material belt (11). The output shaft of the distance adjustment cylinder (62) is connected to the heating bracket (64).

8. The dispensing equipment for chip processing according to claim 1, characterized in that, The track (10) is also equipped with a distance sensor (26) for detecting the distance between the tracks (10). The distance sensor (26) is fixedly installed on the track (10) and electrically connected to the control device (120).

9. The dispensing equipment for chip processing according to claim 1, characterized in that, It also includes a fresh air unit (71), which is fixedly mounted on the frame (100) and used to provide clean air to the dispensing area.

10. A dispensing device for chip processing according to claim 1, characterized in that, It also includes an ion blowing device (65), which is fixedly installed on the frame (100). One ion blowing device (65) is provided at the front and rear of the dispensing section of the strip (11) to remove dust and static electricity from the strip (11) and the chip surface.

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