CN210910856U - Semiconductor plastic package material loading attachment - Google Patents
Semiconductor plastic package material loading attachment Download PDFInfo
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- CN210910856U CN210910856U CN201921514633.9U CN201921514633U CN210910856U CN 210910856 U CN210910856 U CN 210910856U CN 201921514633 U CN201921514633 U CN 201921514633U CN 210910856 U CN210910856 U CN 210910856U
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- guiding plate
- feeding
- material guiding
- plastic package
- hole
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Abstract
The utility model discloses a semiconductor plastic package material feeding device, which comprises a material distributing device, wherein the material distributing device comprises a feeding hopper, a vibrating screen arranged in the feeding hopper, a funnel-shaped feeding hole arranged below the vibrating screen, a feeding pipe communicated with the feeding hole, and an accurate material guiding device, the accurate material guiding device comprises an upper material guiding plate horizontally placed and a lower material guiding plate positioned below the upper material guiding plate, the upper material guiding plate is provided with a material receiving hole which is right opposite to the feeding pipe, the lower material guiding plate is provided with a blanking hole which corresponds to the material receiving hole and has the same height as the thickness of the plastic package material, the lower end of the blanking hole is provided with a slidable baffle, one end of the baffle is connected with a power mechanism for driving the baffle to slide, the upper material guiding plate is fixed, one side of the lower material guiding plate is connected with a driving mechanism, the power mechanism is connected with a control system, the lower material guiding plate is contacted with a feeding mold, the feeding mold is provided with a material receiving groove.
Description
Technical Field
The utility model relates to a semiconductor processing equipment technical field particularly, relates to a semiconductor plastic envelope material loading attachment.
Background
In the electronic component manufacturing industry, the subsequent packaging of products generally adopts a plastic packaging mold to perform injection molding, and in the process, the general steps are as follows: firstly, placing a lead frame on a die; then plastic packaging material is put in; and then closing the mold for injection molding.
Chinese utility model patent [ 2017217162568 ] discloses an automatic feeding device for semiconductor plastic package material. The automatic semiconductor plastic package material feeding device is high in working efficiency and capable of reducing labor cost. The plastic packaging material feeding device comprises an oscillating feeding mechanism and a feeding die, wherein the oscillating feeding mechanism sequentially comprises an oscillating screen, a funnel-shaped oscillating hole and a feeding pipe from top to bottom, a plurality of horizontal baffle switches are arranged in the feeding pipe, the aperture of the screen hole of the oscillating screen is larger than the diameter of a plastic packaging material, the upper aperture of the funnel-shaped oscillating hole is larger than the aperture of the screen hole, and the lower aperture of the funnel-shaped oscillating hole is larger than the diameter of one plastic packaging material and smaller than the diameters of two plastic packaging materials; the upper surface of the feeding die is provided with a plurality of grooves corresponding to the bottom of the feeding pipe. The utility model discloses simple structure, the people only need with the material pour on the shale shaker can, greatly reduced intensity of labour and human cost, realize automatic feeding, improve work efficiency.
Although this kind of automatic feeding device has realized automatic feeding, still have the problem, for example because the length overlength of material loading pipe in the in-service use process for the whereabouts state of plastic package material changes during the material loading, the position changes easily when the plastic package material falls into the mould, for example the condition that plastic package material one side perk appears, the distance that the plastic package material fell into the material loading mould from the material loading pipe is also very long simultaneously, lead to the plastic package material to fall into the bounce again after the material loading mould very easily, the plastic package material form after falling down again also changes easily, produce unqualified product when leading to back compound die to mould plastics.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a semiconductor plastic envelope material loading attachment can solve the inaccurate problem in plastic envelope material position when the present material loading.
The embodiment of the utility model is realized like this: a semiconductor plastic package material feeding device comprises a material distributing device, wherein the material distributing device comprises a feeding hopper, a vibrating screen arranged in the feeding hopper, a funnel-shaped feeding hole arranged below the vibrating screen, and a feeding pipe communicated with the feeding hole, and is characterized by further comprising an accurate material guiding device, the accurate material guiding device comprises an upper material guiding plate and a lower material guiding plate, the upper material guiding plate is horizontally arranged, the lower material guiding plate is positioned below the upper material guiding plate, the upper material guiding plate is provided with a material receiving hole opposite to the feeding pipe, the lower material guiding plate is provided with a blanking hole corresponding to the material receiving hole and having the same height as the thickness of a plastic package material, the lower end of the blanking hole is provided with a slidable baffle, one end of the baffle is connected with a power mechanism for driving the baffle to slide, the upper material guiding plate is fixed, one side of the lower material guiding plate is connected with a driving mechanism, the power mechanism is connected with a control system, and the lower, the feeding mold is provided with a material receiving groove.
By adopting the technical scheme, a worker only needs to pour the plastic package material into the feeding hopper, the vibrating screen screens the plastic package material to enable the plastic package material to fall into the material receiving hole in the upper guide plate through the feeding hole and the feeding pipe, and then fall into the material receiving hole in the lower guide plate, the driving device drives the lower guide plate to transversely move, so that the blanking hole is aligned with the feeding mold, then the control system controls the power mechanism to drive the baffle to be opened, the plastic package material smoothly falls into the feeding mold, the structure controls the quantity of the plastic package material entering the blanking hole at each time by controlling the height of the blanking hole, meanwhile, the shape of the plastic package material is prevented from changing when the plastic package material falls into the feeding mold by reducing the falling distance of the plastic package material, and the yield of semiconductor package is improved.
Furthermore, the number of the baffle plates is two, the two baffle plates are respectively opened towards two sides, one sides, deviating from the two baffle plates, of the two baffle plates are connected with the power mechanism, the two baffle plates slide symmetrically, the plastic package material is not limited to fall down, and the stability of the plastic package material is further improved when the plastic package material falls down.
Furthermore, an annular adjusting inclined plane coaxial with the blanking hole is arranged on the side face of the baffle close to one side of the mold, and the adjusting inclined plane can adjust the posture of the plastic package material which falls into the feeding mold and has an incorrect posture.
Furthermore, the control system comprises a photoelectric switch embedded on the inner wall of the blanking hole, an upper contact is arranged on the lower side surface of the upper material guide plate, a lower contact is arranged on the upper side surface of the lower material guide plate, a complete loop is connected in series among the upper contact, the lower contact, the photoelectric switch, the power mechanism and the power supply, when the driving device drives the lower material guide plate to move to the material placing position, the material placing hole is aligned with the material receiving groove, meanwhile, the upper contact is just contacted with the lower contact, the photoelectric switch is closed because of sensing the existence of the plastic package material, the loop is connected, the power mechanism is opened to drive the baffle to be opened, then the plastic package material falls down, the photoelectric switch is disconnected, the loop is disconnected, the power device resets to reset the baffle, the driving device drives the lower guide plate to reset, the upper contact and the lower contact are disconnected, and even if the plastic package material falls down, the photoelectric switch closes and the whole circuit cannot be closed.
Furthermore, the power mechanism comprises an electromagnet and a common magnet, the electromagnet is provided with a guide rod, the common magnet penetrates through the guide rod and is connected with the baffle, the guide rod is provided with a return spring in a penetrating mode, the electromagnet is high in action speed, and the influence of the movement of the baffle on the falling posture of the plastic package material is reduced.
Further, go up the stock guide downside and offer the guide way parallel with lower stock guide direction of motion, the spout perpendicular with the guide way lateral wall face is all offered to the guide way both sides wall, be provided with on the stock guide upside down with guide way complex guide block and with spout complex slider.
Furthermore, the driving mechanism comprises a driving motor, and the driving motor is connected with the lower material guide plate through a crank connecting rod mechanism.
Furthermore, the driving motor is a speed regulating motor, and the rotating speed of the driving motor can be regulated according to requirements, so that the feeding speed is regulated.
Further, it is provided with the unloading hole to go up the stock guide, be provided with unloader in the unloading hole, unloader includes vacuum chuck, the vacuum chuck top is connected with the vacuum pump, the drive actuating cylinder that vacuum chuck reciprocated is driven to vacuum pump top drive, be provided with photoelectric sensor on the downthehole wall of blanking, control system is the controller, the input and the photoelectric sensor signal connection of controller, the output of controller respectively with actuating mechanism, power unit, drive actuating cylinder and vacuum chuck and be connected.
Furthermore, the power mechanism is a discharging cylinder, and the driving mechanism is a power cylinder.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of an embodiment 1 of a semiconductor molding compound feeding device of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a circuit diagram of a control system of an embodiment 1 of the semiconductor molding compound feeding device of the present invention;
FIG. 4 is a schematic view of a connection structure of an upper material guiding plate and a lower material guiding plate;
fig. 5 is a schematic structural view of the semiconductor molding compound feeding device of embodiment 2 of the present invention;
FIG. 6 is a partial enlarged view of FIG. 5 at B;
fig. 7 is a control block diagram of the semiconductor molding compound feeding device of embodiment 2 of the present invention.
Reference numerals: 1-material distributing device, 110-feeding hopper, 120-vibrating screen, 130-feeding hole, 140-feeding pipe, 2-precise material guiding device, 210-upper material guiding plate, 211-material receiving hole, 212-upper contact, 213-discharging hole, 220-lower material guiding plate, 221-material discharging hole, 222-lower contact, 223-baffle, 223 a-adjusting inclined plane, 224-power mechanism, 224 a-common magnet, 224 b-reset spring, 224 c-guide rod, 224 d-electromagnet, 224 e-discharging cylinder, 225-photoelectric switch, 226-guide block, 227-slide block, 228-discharging device, 228 a-driving cylinder, 228 b-vacuum pump, 228 c-vacuum chuck, 229-photoelectric sensor, 230-driving mechanism, 231-a speed regulating motor, 232-a crank connecting rod mechanism, 233-a power cylinder, 3-a feeding mold and 310-a receiving groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
The specific working principle is as follows: during operation, a worker pours the plastic package material into the distributing device 1, the vibrating screen 120 in the distributing device 1 vibrates to separate one plastic package material into the feeding hole 130, so as to prevent the plastic package material falling into too many plastic package materials to block the feeding hole 130, the plastic package material falling into the feeding hole 130 enters the precise material guiding device 2 through the feeding pipe 140, the plastic package material firstly enters the material receiving hole 211 on the upper material guiding plate 210, then enters the material falling hole 221 on the lower material guiding plate 220, and is blocked by the baffle 223, at this time, the photoelectric switch 225 senses the existence of the plastic package material and is closed, the speed regulating motor 231 converts the circular motion into the linear motion of the lower material guiding plate 220 through the crank connecting rod mechanism 232, as shown in fig. 1, the lower material guiding plate 220 moves leftwards along the upper material guiding plate 210, when the material falling hole 221 is aligned with the material receiving groove 310, the upper contact 212 is just contacted with the lower contact 222, and the upper contact 212, the lower contact 212, The lower contact 222, the photoelectric switch 225, the electromagnet 224d and the power supply are connected in series, the electromagnet 224d operates to attract the common magnet 224a to slide towards the electromagnet 224d along the guide rod 224c, the baffle 223 is driven to be far away from the blanking hole 221 and compress the return spring 224b, the plastic package material falls into the receiving groove 310, then the photoelectric switch 225 is disconnected as the plastic package material is separated from the blanking hole 221, the circuit is disconnected, the electromagnet 224d loses magnetic force, the return spring 224b recovers the original length, the baffle 223 is pushed to recover the original position, the blanking hole 221 is closed, then the speed regulating motor 231 continues to rotate to enable the lower guide plate 220 to recover the original position to continue the next round of discharging process, the structure controls the amount of the plastic package material entering the blanking hole 221 each time by controlling the height of the blanking hole 221, and simultaneously avoids the form change when the plastic package material falls into the feeding mold 3 by reducing the falling path of the plastic package material, the yield of semiconductor package is improved.
In the second embodiment, referring to fig. 5 to 7, the upper material guiding plate 210 is provided with a blanking hole 213, a blanking device 228 is arranged in the blanking hole 213, the blanking device 228 includes a vacuum chuck 228c, a vacuum pump 228b is connected above the vacuum chuck 228c, a driving cylinder 228a which drives the vacuum chuck 228c to move up and down is arranged above the vacuum pump 228b, a photoelectric sensor 229 is arranged on an inner wall of the blanking hole 221, the control system is a controller, an input end of the controller is in signal connection with the photoelectric sensor 229, and an output end of the controller is respectively connected with the driving mechanism 230, the power mechanism 224, the driving cylinder 228a, and the vacuum chuck 228 c. The power mechanism 224 is a discharging cylinder 224e, the driving mechanism 230 is a power cylinder 233, and other technical features are the same as those of the first embodiment.
The specific working principle is that when the photoelectric sensor 229 drops the plastic package material into the material receiving hole 211, an electric signal is transmitted to the controller, the controller controls the power cylinder 233 to push the lower material guide plate 220 to move, after the lower material guide plate 220 moves in place, the controller controls the driving cylinder 228a to drive the vacuum chuck 228c to be attached to the plastic package material, then controls the vacuum pump 228b to pump air in the chuck away, controls the material discharging cylinder 224e to pull the baffle 223 to open, continues to control the driving cylinder 228a to move downwards to place the plastic package material in the material receiving groove 310, then turns off the vacuum pump 228b, separates the vacuum chuck 228c from the plastic package material, controls the driving cylinder 228a to drive the vacuum chuck 228c to separate from the material discharging hole 221 upwards, turns off the material discharging cylinder 224e, and drives the lower material guide plate 220 to return to the original position to enter the next material discharging flow by the power.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A semiconductor plastic package material feeding device comprises a material distributing device, wherein the material distributing device comprises a feeding hopper, a vibrating screen arranged in the feeding hopper, a funnel-shaped feeding hole arranged below the vibrating screen, and a feeding pipe communicated with the feeding hole, and is characterized by further comprising an accurate material guiding device, the accurate material guiding device comprises an upper material guiding plate and a lower material guiding plate, the upper material guiding plate is horizontally arranged, the lower material guiding plate is positioned below the upper material guiding plate, the upper material guiding plate is provided with a material receiving hole opposite to the feeding pipe, the lower material guiding plate is provided with a blanking hole corresponding to the material receiving hole and having the same height as the thickness of a plastic package material, the lower end of the blanking hole is provided with a slidable baffle, one end of the baffle is connected with a power mechanism for driving the baffle to slide, the upper material guiding plate is fixed, one side of the lower material guiding plate is connected with a driving mechanism, the power mechanism is connected with a control system, and the lower, the feeding mold is provided with a material receiving groove.
2. The semiconductor plastic package material loading device of claim 1, wherein the number of the baffle plates is two, the two baffle plates are respectively opened to two sides, and the sides of the two baffle plates, which are far away from each other, are both connected with a power mechanism.
3. The semiconductor plastic package material loading device according to claim 2, wherein a side surface of the baffle plate on a side close to the mold is provided with a circular adjustment inclined surface coaxial with the blanking hole.
4. A semiconductor molding compound feeding device according to claim 1 or 3, wherein the control system comprises a photoelectric switch embedded on the inner wall of the blanking hole, an upper contact is arranged on the lower side surface of the upper material guiding plate, a lower contact is arranged on the upper side surface of the lower material guiding plate, and a complete loop is connected in series between the upper contact, the lower contact, the photoelectric switch, the power mechanism and the power source.
5. The semiconductor plastic package material loading device according to claim 4, wherein the power mechanism comprises an electromagnet and a common magnet, the electromagnet is provided with a guide rod, the common magnet is arranged on the guide rod in a penetrating manner and connected with the baffle, and the guide rod is provided with a return spring in a penetrating manner.
6. The semiconductor molding compound feeding device according to claim 1, wherein the lower side of the upper material guiding plate is provided with a guiding slot parallel to the moving direction of the lower material guiding plate, two side walls of the guiding slot are provided with sliding slots perpendicular to the side wall surfaces of the guiding slot, and the upper side of the lower material guiding plate is provided with a guiding block engaged with the guiding slot and a sliding block engaged with the sliding slots.
7. The semiconductor plastic package material loading device according to claim 1, wherein the driving mechanism comprises a driving motor, and the driving motor is connected with the lower material guide plate through a crank-link mechanism.
8. The semiconductor molding compound feeding device according to claim 7, wherein the driving motor is a speed-adjustable motor.
9. The semiconductor plastic package material loading device according to claim 1, wherein the upper material guide plate is provided with a discharging hole, the discharging hole is internally provided with a discharging device, the discharging device comprises a vacuum chuck, a vacuum pump is connected above the vacuum chuck, a driving cylinder for driving the vacuum chuck to move up and down is arranged above the vacuum pump, a photoelectric sensor is arranged on the inner wall of the discharging hole, the control system is a controller, the input end of the controller is in signal connection with the photoelectric sensor, and the output end of the controller is respectively connected with the driving mechanism, the power mechanism, the driving cylinder and the vacuum chuck.
10. The semiconductor molding compound feeding device according to claim 9, wherein the power mechanism is a discharging cylinder, and the driving mechanism is a power cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514633.9U CN210910856U (en) | 2019-09-11 | 2019-09-11 | Semiconductor plastic package material loading attachment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514633.9U CN210910856U (en) | 2019-09-11 | 2019-09-11 | Semiconductor plastic package material loading attachment |
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| CN210910856U true CN210910856U (en) | 2020-07-03 |
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| CN201921514633.9U Active CN210910856U (en) | 2019-09-11 | 2019-09-11 | Semiconductor plastic package material loading attachment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587893A (en) * | 2019-09-11 | 2019-12-20 | 四川洪芯微科技有限公司 | Semiconductor plastic package material feeding device and working method thereof |
| CN113182826A (en) * | 2021-04-12 | 2021-07-30 | 联合汽车电子有限公司 | Automatic screw preassembling method and device |
| CN114798141A (en) * | 2022-05-09 | 2022-07-29 | 葛军辉 | Cosmetic raw materials is milling machine for correct grinding |
-
2019
- 2019-09-11 CN CN201921514633.9U patent/CN210910856U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587893A (en) * | 2019-09-11 | 2019-12-20 | 四川洪芯微科技有限公司 | Semiconductor plastic package material feeding device and working method thereof |
| CN113182826A (en) * | 2021-04-12 | 2021-07-30 | 联合汽车电子有限公司 | Automatic screw preassembling method and device |
| CN114798141A (en) * | 2022-05-09 | 2022-07-29 | 葛军辉 | Cosmetic raw materials is milling machine for correct grinding |
| CN114798141B (en) * | 2022-05-09 | 2023-11-28 | 佳宁化妆品（福州）有限公司 | Flour mill for fine grinding of cosmetic raw materials |
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