JP2004175462A - Work storing device and work storing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work storing device capable of transferring a work without displacement, and performing the processing from cutting the work to storing the same on a tray at a high speed. <P>SOLUTION: A cutting die 1, a pitch converting table 6 and an intermediate loading part are serially mounted along the work transferring direction with difference in level, a first pick-up part 4 holds the work W from the cutting die 1 and a second pick-up part 5 holds the work W from the pitch converting table 6, and the work is synchronously transferred to the pitch converting table 6 and a first slide table 7 to transfer the work W. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
FIELD OF THE INVENTION
The present invention relates to a work storage device and a work storage method in which a work mounted on a substrate and having a semiconductor chip sealed with a resin is cut into individual pieces and stored in a storage tray.
[0002]
[Prior art]
In semiconductor devices, a work in which a semiconductor chip is mounted on a strip-shaped substrate such as a lead frame, a resin substrate, a film, or a tape is transported to a resin sealing device, and the semiconductor chip is sealed with a resin. , And stored in a storage tray.
[0003]
For example, in the work storage device of FIGS. 10 to 12, the work (substrate) transferred to the cutting die 102 along the transfer rail 101 is cut into, for example, two pieces by a die 102a and a punch (not shown). Is done. Each time the work W is punched once, the transport rail 101 on which the substrate is placed is moved in the X direction by a moving mechanism (not shown), and the next work W is punched by the cutting die 102.
The first pickup 103 sucks and holds the work W in accordance with the cutting operation of the cutting die 102. Further, the second pickup 104 is rotated by 90 degrees from the direction at the time of cutting from the pitch conversion table 105 and sucks and holds the work W whose pitch has been converted to the storage tray pitch (the pitch conversion is performed depending on the type of the work W). The rotation angle of the table 105 is changed as needed). Then, the first and second pickups 103 and 104, which are integrally supported while maintaining a predetermined pitch in the work transfer direction, are moved in the Y direction, and the work W is transferred from the first pickup 103 to the pitch conversion table 105. The work W is transferred from the second pickup 104 to the buffer tray 106. The scrap (unnecessary substrate) from which the cutting die 102 has completed cutting the work W is sent out to the chute 111 and collected (see FIG. 11).
[0004]
For example, if the number of workpieces stored in one row in the short direction of the storage tray 108 shown in FIG. 10 is eight, the buffer tray 106 has two rows (16 rows) of mounting units similar to one row in the short direction of the storage tray 108. Individual). Further, the storage pickup 107 that collectively sucks and transports the work W is provided with sixteen suction parts that suck and hold the work W in the same manner as the mounting part of the buffer tray 106.
In FIG. 10, each time the work W is transferred from the second pickup 104, the work W is sequentially placed on the buffer tray 106 while moving XY in the arrow P direction stepwise. When the work W is fully loaded on the buffer tray 106, the work W is collectively sucked and held by the storage pickup 107 and transferred to the storage tray 108 for storage. The empty buffer tray 106 returns in the direction of the arrow Q, and the second pickup 104 resumes the transfer of the workpiece W.
[0005]
12, the storage trays 108 are separated one by one from the tray supply unit 109 and sent out in the direction of arrow R while being supported by the support rails 112 (see FIG. 11). Every time a predetermined amount (in FIG. 10, two rows of 16 pieces) is transferred, the sheet is pitch-fed. Then, when the storage of the work W is completed, the work W is transferred to the tray storage unit 110 and is stacked and stored.
[0006]
Further, as another example, a workpiece processing in which the workpiece W is aligned and punched at the processing position of the cutting die by image recognition, the punched workpiece W is held by a pickup, and is conveyed and stored in a direction orthogonal to the workpiece feeding direction. An apparatus has been proposed (for example, see Patent Document 1).
In addition, the work tray which separates the shipping tray loaded on the stocker to the transfer station, suctions and holds the work from the work tray by the transfer loader, transfers the work to the shipping tray, and discharges the work tray to the discharge station. A transfer device has been proposed (for example, see Patent Document 2).
[0007]
[Patent Document 1]
JP-A-2000-228375 (FIG. 1)
[Patent Document 2]
JP-A-8-157068 (FIG. 2)
[0008]
[Problems to be solved by the invention]
In the work storage device shown in FIGS. 10 to 12, in order to match the pitch between the cut work W and the work to the storage tray 108 and the work transfer direction, the pitch is converted by the pitch conversion table 105 and rotated by 90 degrees. Since the sheet is first transferred to the buffer tray 106, a positional shift is likely to occur, and it is difficult to align the pitch conversion table 105 with the buffer tray 106.
The die 102a, the pitch conversion table 105, and the buffer tray 106 of the cutting die 102 are provided at the same height. For this reason, the moving stroke required for the vertical movement and the horizontal movement by the first and second pickups 103 and 104 is long (because it moves in a U-shape), and it takes time to transfer the work W, There is a problem that it takes time from cutting to tray storage.
[0009]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a work storage device and a work storage method that solve the above-described problems of the prior art and are less likely to cause positional deviation when transferring a work, and that can perform high-speed processing from work cutting to tray storage. .
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration.
In a work storage device in which a work in which a semiconductor chip mounted on a substrate is sealed with a resin is cut into individual pieces and stored in a storage tray, the work cut into individual pieces by a cutting die is adjusted to a storage tray pitch. A first pickup unit to be transferred to a pitch conversion unit for converting the pitch, and a first pickup unit provided at a different height from the first pickup unit, and a work held by the pitch conversion unit to be transferred to an intermediate mounting unit. A work transfer unit having a second pickup unit; and a work storage unit configured to hold the work transferred to the intermediate mounting unit at a storage tray pitch and transfer the work to the storage tray. The mold, the pitch conversion unit and the intermediate mounting unit are arranged in series at different height positions along the work transfer direction, and a first pickup unit of the work transfer unit is a second pickup from the cutting die. Department holds each workpiece from the pitch conversion unit, characterized in that each transferred to the pitch conversion unit and the intermediate mounting portion synchronized transfer of the work is performed.
In addition, the work is transferred from the second pickup unit to the intermediate placement unit at the upper position, and the work is transferred to the work storage unit. The work moves vertically in the vertical direction so as to return to the original position at the lower position. The first slide table is replaced with the first slide table and moves forward, and the work is transferred from the second pickup unit to the work storage unit, and then moved backward to return to the original position. And a second slide table that moves in a rectangle.
The tray storage unit includes a storage pickup unit that vertically reciprocates in a vertical direction and a horizontal direction to transfer a work to a storage tray that stands by at a work transfer position while holding a work from an intermediate mounting unit, and a tray supply unit. And a storage tray transport mechanism for sending out the empty storage trays stacked on the tray one by one to the work storage position, and loading and storing the storage trays storing the works in the tray storage unit.
Further, the storage tray transfer mechanism holds a plurality of storage trays on a transfer body and reciprocates between the tray supply unit and the work transfer position, and between the work transfer position and the tray storage unit. I do.
[0011]
Also, in the work storage method in which the work in which the semiconductor chip mounted on the substrate is sealed with resin is cut into individual pieces and stored in the storage tray, the work cut into pieces by the cutting die is adjusted to the storage tray pitch. An intermediate transfer step in which the step of transferring to a pitch conversion unit that performs pitch conversion and the step of transferring the work whose pitch has been converted by the pitch conversion unit to an intermediate mounting unit are performed in synchronization with each other; Of holding the workpieces transferred to the storage tray at the storage tray pitch, transferring the empty storage tray to the work transfer position, and storing the storage tray full of workpieces And a storage step of performing the operation in synchronization with the intermediate transfer step, wherein the intermediate transfer step includes a cutting die and a pitch conversion unit and a pitch conversion unit that are arranged in series along the workpiece transfer direction at different height positions. And inside Between mounting portion, and performs transfer of the workpiece in synchronism without changing the orientation of the workpiece after the cutting.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a work storage device and a work storage method according to the present invention will be described in detail with reference to the accompanying drawings.
1 is a plan view showing a layout configuration of the work storage device, FIG. 2 is a front view and a partially enlarged view of the work storage device of FIG. 1, FIG. 3 is a right side view of the work storage device of FIG. 1, and FIG. FIG. 5 is a timing chart illustrating the operation of moving the second slide table, FIG. 5 is a timing chart illustrating the conveyance operation of the storage tray conveyance mechanism, FIGS. 6 to 9 are explanatory diagrams illustrating the operation state of the storage tray conveyance mechanism, and FIG. FIG. 3 is a partially enlarged view of the work storage device of FIG. 2.
[0013]
With reference to FIGS. 1 to 3, FIG. 6, and FIG. 13, a schematic configuration of the work storage device will be described together with a work storage method. In this embodiment, a work W in which a plurality of semiconductor chips mounted on a strip-shaped substrate (a lead frame, a resin substrate, a film, a tape, etc.) are sealed with a resin is cut into individual pieces from the substrate, and a storage tray is formed. A work storage device and a work storage method stored in a storage device will be described.
[0014]
In FIG. 1, a cutting die 1 cuts a workpiece W from a substrate 2 by a punch and a die 1a (not shown). The substrate 2 is guided into the cutting die 1 by being guided by the support rail 3. As the cutting die 1, for example, a punching die similar to FIGS. 6 and 7 of Patent Document 1 is used.
[0015]
First and second pickup units 4 and 5 are provided in the work transfer unit. The first pickup unit 4 sucks and holds the work W cut by the cutting die 1 and transfers the work W to a pitch conversion table 6 which is a pitch conversion unit. A punch hole (through hole) is formed in a punch (not shown), and the first pickup unit 4 enters through the punch hole to suck and hold the cut workpiece W. Note that, after the punch is retracted from the die 1a after the cutting, the first pickup unit 4 may enter the opened cutting die 1 to suck and hold the work W cut from the die 1a. The scrap (unnecessary substrate) from which the work W is cut from the substrate 2 is sent out to the chute 1b shown in FIG. 2 and collected.
[0016]
In the pitch conversion table 6, for example, the work placement unit 6a is moved to both sides in accordance with the storage tray pitch by driving the cylinder to perform pitch conversion. Further, the second pickup unit 5 is provided at a different height from the first pickup unit 4, and is provided on the intermediate placement unit for sucking and holding the work W after the pitch conversion from the pitch conversion table 6. It is transferred to the first and second slide tables 7 and 8. The first and second pickup units 4 and 5 are integrally supported by a pickup support plate 9 at a predetermined pitch in the transfer direction. The pickup support plate 9 has a rail portion 10 provided in the up-down direction connected to a linear guide 12 provided on a moving body 11 and held. When a servo motor (not shown) is operated, the pickup support plate 9 moves up and down with respect to the moving body 11 and the first and second pickup units 4 and 5 move up and down. In FIG. 2, the moving body 11 reciprocates in a horizontal direction in connection with a ball screw 13 which is driven to rotate by a servomotor.
[0017]
In FIG. 2, first and second slide tables 7 and 8 are provided in the intermediate mounting portion. The first slide table 7 moves the work W from the second pickup unit 5 at the upper position, transfers the work W to the work storage unit, and moves vertically downward so as to descend to the lower position and return to the original position. I do. The second slide table 8 moves forward in place of the first slide table 7, so that the work W is transferred and transferred from the second pickup unit 5 to the work storage unit, and then retreats to the original position. Move horizontally in the horizontal direction.
[0018]
In FIG. 13, the first slide table 7 is provided so as to be linked to a guide rail 7b provided with a first table main body 7a on which the work W is placed, in a direction orthogonal to the work transfer direction. Further, a part of an endless timing belt 16 stretched between pulleys 14 and 15 is connected to the first table body 7a. In FIG. 1, when the pulley 14 connected to the motor shaft of the first drive motor 17 is driven to rotate, the first table main body 7a moves along the guide rail 7b via the timing belt 16. I have.
[0019]
In FIG. 13, a first table support 7 c that supports a drive mechanism such as pulleys 14 and 15 that are driven to rotate by a guide rail 7 b and a first drive motor 17 is connected to a cylinder rod of a table vertical movement cylinder 18. are doing. By operating the table vertical movement cylinder 18, the position of the first table main body 7a is changed to the transfer position (upper position) where the workpiece W is transferred from the second pickup unit 5, and the second slide table 8 is moved. Up and down between the retracted position (lower position) to avoid the interference of the robot.
[0020]
Referring to FIG. 13, the configuration of the second slide table 8 will be described. A guide rail 8d is integrally formed on the lower surface of the second table main body 8a on which the work W is placed on the upper surface along the work transfer direction. The guide rail 8d is linked to a fixed guide 8e provided on the second table support 8c. Further, the second table main body 8a is connected to a cylinder rod of an air cylinder (not shown) provided on the second table support 8c. When the air cylinder is actuated, the second table body 8a is guided by the fixed guide 8e to move back and forth, and the forward position where the work W is transferred from the second pickup unit 5, the first slide table 7, and the like. To move back and forth between the retracted position to avoid interference.
[0021]
In FIG. 13, the second table support 8c is linked to a guide rail 8b provided in parallel with the guide rail 7b. The guide rail 8 b is supported by a support post 24 erected on the base plate 23. A part of an endless timing belt 21 stretched between pulleys 19 and 20 is connected to the second table support 8c. When the pulley 19 connected to the motor shaft of the second drive motor 22 is driven to rotate, the second table support 8c moves along the guide rail 8b via the timing belt 21 (FIG. 1).
[0022]
In FIG. 1, a pickup unit 25 for storage is provided in the work storage unit. The storage pickup unit 25 sucks and holds the work W transferred to the first and second slide tables 7 and 8 at the storage tray pitch and stores the work W in the storage tray 26. In FIG. 2, the storage pickup unit 25 is supported in connection with a ball screw of a storage motor 28 provided on the moving body 27, and moves up and down by rotating the storage motor 28 so as to move to the first position. The work W is sucked and held from the second slide tables 7 and 8. Further, the moving body 27 is connected to a timing belt (or a ball screw or the like driven to rotate by the servo motor) stretched between pulleys driven to rotate by a servo motor (not shown). The storage pickup unit 25 moves in a horizontal direction along a guide plate 29 from a work holding position corresponding to a position directly above the first and second slide tables 7 and 8 to a work transfer position on the storage tray 26. Reciprocate to
[0023]
In FIGS. 2 and 13, the cutting die 1 (die 1a), the pitch conversion table 6, and the first and second slide tables 7, 8 are arranged in series at different height positions along the workpiece transfer direction. Have been. That is, they are arranged so that the height position becomes higher from the cutting die 1 toward the first and second slide tables 7 and 8. Also, the height positions of the first and second pickups 4 and 5 are provided so that the height position of the second pickup 5 is higher than that of the first pickup 4. The first pickup unit 4 is synchronized with the position where the second pickup unit 5 moves upward by holding the work W by suction from the pitch conversion table 6 by the cutting die 1 (the position having a height difference), and the moving body 11 is moved horizontally. When the workpiece W moves in the direction and reaches the pitch conversion table 6 and the first slide table 7 (or the second slide table 8), the work W is slightly moved downward and the work W is transferred. Although the first and second pickups 4 and 5 are integrally supported by the pickup support plate 9, they may be separately supported as long as they vertically move in synchronization.
[0024]
In FIG. 3, the work storage unit is provided with a tray supply unit 30 in which empty storage trays 26 are loaded and stored, and a tray storage unit 31 in which the storage trays 26 in which work W is stored are loaded and stored. Further, a storage tray transport mechanism 32 for sending out the empty storage trays 26 loaded on the tray supply unit 30 one by one to the work transfer position and loading and storing the storage tray 26 storing the work W in the tray storage unit 31 is provided. Is provided. The storage tray transport mechanism 32 holds a plurality of storage trays 26 on a transport body 33 and alternately moves between the tray supply unit 30 and the work transfer position, and between the work transfer position and the tray storage unit 31. It has become.
[0025]
In FIG. 1, a guide frame 34 for stacking and storing empty storage trays 26 is provided in the tray supply unit 30, and a guide frame 35 for stacking and storing the storage tray 26 on which the work is mounted is provided in the tray storage unit 31. Is provided. The guide frames 34 and 35 are provided at eight positions so that the storage tray 26 can be transported in the longitudinal direction or in the lateral direction. The interval between the guide frames 34 and 35 can be adjusted according to the size of the storage tray 26. Further, in the tray supply unit 30, in order to separate and supply empty storage trays 26 one by one from the lowermost side, separation claws 37 operated by a separation cylinder 36 are provided at four corners. Further, in the tray storage unit 31, since the storage trays 26 on which the works W are placed are stacked one by one from the lowermost side, the separation claws 38 that rotate upward but do not rotate downward are provided in the storage tray. A total of eight locations are provided so that the four corners can be supported in accordance with the 26 storage modes.
[0026]
In FIG. 3, a supply side cylinder 39 is provided below the tray supply unit 30, and a tray receiving member 40 is connected to the tip of the cylinder rod. It is configured to receive only the lowermost storage tray 26 at a position where the tray-side receiving member 40 is moved upward by operating the supply-side cylinder 39, and to deliver it to the carrier 33 when it is moved downward. The tray remaining in the tray supply unit 30 remains supported by the separation claw 37 operated by the separation cylinder 36.
[0027]
In FIG. 3, a storage cylinder 41 is provided below the tray storage section 31, and a tray receiving member 42 is connected to the tip of the cylinder rod. By operating the storage side cylinder 41 to move the tray receiving member 42 upward, the storage tray 26 transported from the transport body 33 is received and moved upward, and the separation claw 38 is moved upward from the lowermost position to the tray storage portion 31. The storage trays 26 are sequentially stacked and stored from the lower side by being rotated and supported.
[0028]
In FIG. 3, a transport rail 43 is provided on a storage base 54 between the tray supply unit 30 and the tray storage unit 31. The transport body 33 is movably connected to the transport rail section 43 via a linear guide 44. The transport body 33 is provided with a transport vertical cylinder 46 on a transport frame 45. A transfer table 47 on which a plurality of storage trays 26 (in this embodiment, two places) can be placed is connected to the end of the cylinder rod of the transfer vertical movement cylinder 46. The transfer table 47 is vertically attached to the lower surface of the table. The provided guide post 48 moves up and down while being guided by a cylindrical post guide portion 49 erected on the carrier frame 45 (see FIG. 6).
In FIG. 2, a part of the timing belt 50 stretched between pulleys (not shown) is connected to the carrier frame 45. When the pulley is rotationally driven by a servo motor (not shown), the carrier 33 moves along the carrier rail 43.
[0029]
In FIG. 6, the transport table 47 is provided with two tray abutting portions 51 in this embodiment. Further, the transfer table 47 is provided with two tray pushing portions 53 that operate in connection with the cylinder rod of the butting cylinder 52. The storage tray 26 placed on the transport table 47 is operated by the abutment cylinder 52, one end of the storage tray 26 is pushed by the tray pushing part 53, and the other end is abutted against the tray abutment part 51. And is held on the transport table 47.
[0030]
Next, the movement operation of the first and second slide tables 7 and 8 will be described with reference to the timing chart of FIG. The upper part shows the vertical position of the first slide table 7, and the lower part shows the front and rear positions of the second slide table 8. While the work W is being transferred to the first slide table 7 by the second pickup section 5, the second slide table 8 is waiting at the rear position. The first slide table 7 intermittently drives and drives the first drive motor 17 every time the work W is transferred by the second pickup unit 5. When the work W is fully loaded on the first slide table 7, the first slide table 7 moves to a position below the pickup unit 25 for storage. Next, when the work W is transferred from the first slide table 7 to the pickup unit 25 for storage, the table vertical cylinder 18 is operated to lower the first slide table 7, and the first drive motor 17 is rotated in the reverse direction. Drive to return to the original position. At this time, the first slide table 7 is located below the second slide table 8 (see FIG. 13).
[0031]
When the mounting of the work W on the first slide table 7 is completed, a cylinder (not shown) is operated instead of the first slide table 7 to move the second slide table 8 to the front position (see FIG. 13). It moves, and the workpiece W is transferred by the second pickup unit 5. The second slide table 8 intermittently drives the second drive motor 22 to feed the workpiece W every time the workpiece W is transferred by the second pickup unit 5. Then, when the work W is transferred from the second slide table 8 to the storage pickup unit 25 in the same manner as the first slide table 7, the cylinder (not shown) is operated to move the second slide table 8 to the rear position. Then, the second drive motor 22 is reversely driven to return to the original position. After the movement of the second slide table 8, the first slide table 7 which has been waiting downward moves up, and the transfer of the work W in the intermediate transfer section is continuously performed while repeating the above operation.
[0032]
Next, the transport operation of the storage tray 26 in the work storage section will be described with reference to the timing chart of FIG. 5 and the operation state diagrams of the storage tray transport mechanism 32 shown in FIGS. 6 to 9. First, the operation in the case where only the first sheet of the storage tray 26 is set at the work transfer position by the carrier 33 will be described.
[0033]
In FIG. 6, the carrier 33 is on the tray supply unit 30 side, and the tray placement unit 47 a of the tray placement units 47 a and 47 b of the transfer table 47 is located directly below the tray supply unit 30. In this state, the supply side cylinder 39 is operated to move the tray receiving member 40 upward to just below the tray supply unit 30. When the separation claw 37 is retracted once by the separation cylinder 36 and moved forward again, only the lowermost one of the empty storage trays 26 stacked in the tray supply unit 30 is transferred to the tray receiving member 40. Then, the remaining storage tray 26 is supported by the separation claw 37 again. Then, when the supply-side cylinder 39 is operated to move the tray receiving member 40 downward, the storage tray 26 is delivered to the tray mounting portion 47 a of the transport table 47. It is assumed that the tray receiving member 40 is formed so as not to interfere with the transport table 47 when the tray receiving member 40 moves up and down (see FIG. 5; step S1).
[0034]
The storage tray 26 placed on the tray placement portion 47a activates a servomotor (not shown) while operating the butting cylinder 52 to hold the tray between the tray pushing portion 52 and the tray butting portion 51. Then, the transport body 33 is moved along the transport rail section 43 toward the tray storage section 31. Then, the transport table 47 is moved upward by operating the transport vertical movement cylinder 46 at the position where the tray mounting portion 47a is directly below the work transfer position. Then, the abutting cylinder 52 is operated to release the holding state of the tray pushing portion 52 and the tray abutting portion 51, and is held by a chuck cylinder (not shown) provided on the side guide rail 55 (FIG. 5). ; See step S2).
[0035]
Then, after the transport table 47 is moved downward by operating the vertical movement cylinder 46, a servo motor (not shown) is activated to move the transport body 33 to the original tray supply unit 30 side along the transport rail unit 43. As shown in FIG. 6, the setting of the first storage tray 26 at the work transfer position is completed.
[0036]
In FIG. 7, the supply-side cylinder 39 is moved up and down again to transfer the lowermost empty storage tray 26 from the tray supply unit 30 to the tray receiving member 40 to the tray receiving member 40. The storage tray 26 is delivered to the part 47a. The storage tray 26 placed on the tray placement portion 47a is held between the tray pushing portion 52 and the tray butting portion 51 by operating the butting cylinder 52.
[0037]
In FIG. 7, the storage tray 26 held by the side guide rail 55 above the tray mounting portion 47b of the transfer table 47 at the work transfer position, the work W is stored, for example, in one row by the storage pickup unit 25. Will be transferred to When the transfer of the work W to the storage tray 26 is completed, the vertical movement cylinder 46 for transfer is operated to move the transfer table 47 upward, and the chuck cylinder (not shown) provided on the side guide rail 55 is released. Then, the storage tray 26 is transferred from the side guide rail 55 to the tray mounting portion 47b (see FIG. 5; step S3).
[0038]
Next, the abutting cylinder 52 of the tray mounting portion 47b is operated to hold the storage tray 26 by the tray pushing portion 52 and the tray abutting portion 51, and a servo motor (not shown) is activated to store the carrier 33 in the tray. It is moved along the transport rail 43 toward the section 31.
[0039]
In FIG. 8, the storage tray 26 placed on the tray placement portion 47b of the transport table 47 moves directly below the tray storage portion 31, and the empty storage tray 26 placed on the tray placement portion 47a moves the work tray. It has moved to a position directly below the transfer position. In this state, the holding cylinders 52 of the tray mounting portions 47a and 47b are actuated to release the holding state of each storage tray 26 by the tray pushing portion 52 and the tray butting portion 51, and at the same time, provided on the side guide rail 55. The empty storage tray 26 of the tray mounting portion 47a is held by the chuck cylinder (not shown). Then, as shown in FIG. 9, the storage cylinder 41 is operated to move the tray receiving member 42 upward, receive the storage tray 26 from the tray mounting portion 47b, and further move up to separate from the lower side of the tray storage portion 31. The claw 38 is once rotated upward and moved up until the storage tray 26 gets over, and the storage tray 26 is supported by the separation claw 38. It is assumed that the tray receiving member 42 is formed so as not to interfere with the transport table 47 when the tray receiving member 42 moves up and down (see FIG. 5; step S4).
[0040]
Then, after the vertical movement cylinder 46 is operated to lower the transfer table 47, a servo motor (not shown) is activated to move the transfer body 33 to the original tray supply unit 30 side along the transfer rail unit 43. Hereinafter, similarly, a series of operations of tray supply, work transfer, and tray storage are repeatedly performed (see FIG. 5; steps S5, S6, S7...). In this way, by alternately performing the supply of the empty tray, the collection of the work loading tray, the storage of the work loading tray, and the setting of the empty tray, the storing operation of the cut and recovered work can be continuously performed at high speed. it can. The operation of transferring the work W to the storage tray 26 by the storage pickup unit 25 is not limited to one row, and may be several units.
[0041]
If the above-described work storage device and work storage method are used, the cutting die 1, the pitch conversion table 6, and the first and second slide tables 7, 8 are arranged in series at different heights in the work transfer direction. The work W can be arranged with a reduced movement pitch between each process, and the work W can be transported in the cut direction without rotating, so that there is no displacement and even if the type of work is changed, the pitch can be changed. Only can be dealt with.
Further, since the first pickup unit 4 and the second pickup unit 5 are integrally supported at different heights, the amount of movement of the first and second pickup units 4 and 5 in the vertical and horizontal directions is increased. The transfer of the work W can be performed at a high speed with less work. For example, while the pickup W can transfer the workpiece W for 70 to 80 shots (number of times) per minute in the past, the present embodiment can transfer the workpiece W for 110 to 120 shots (number of times) per minute. It is now possible.
Further, by using a first slide table 7 that moves rectangularly in the vertical direction and a second slide table 8 that moves rectangularly in the horizontal direction instead of the first slide table 7, the work W after cutting can be used. It is possible to form an intermediate mounting portion for efficiently collecting.
The supply and collection of the storage tray 26 on which the work W is transferred by the storage pickup unit 25 to the work transfer position is performed by holding the plurality of storage trays 26 on the carrier 33 by the storage tray transfer mechanism 32. This is performed by alternately moving between the tray supply unit 30 and the work transfer position, and between the work transfer position and the tray storage unit 31, so that the supply and collection of the storage tray 26 to the work transfer position are continuously performed at high speed. You can do it.
Therefore, without changing the direction of the workpiece W after cutting between the cutting die and the pitch conversion unit and between the pitch conversion unit and the intermediate placing unit, which are arranged in series along the workpiece transfer direction at different height positions. Since the transfer of W is performed in synchronization, a series of operations from cutting the work W to storing it in the storage tray 26 through pitch conversion can be performed at high speed.
[0042]
As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and may include a type of a work, a number of works held by a pickup unit, and a transfer by a transfer body. Of course, many modifications can be made without departing from the spirit of the law, such as the number of possible storage trays 26 and the transport direction can be arbitrarily changed.
[0043]
【The invention's effect】
With the use of the work storage device and the work storage method according to the present invention, the cutting die, the pitch conversion unit, and the intermediate mounting unit are arranged in series in the work transfer direction at different heights from each other. The distance between the workpieces can be reduced, and the workpieces can be transported in the cut direction without rotating. Therefore, there is no positional deviation, and even if the type of the workpiece is changed, it can be handled only by the pitch conversion.
Further, since the first pickup section and the second pickup section are integrally supported at different height positions, the amount of movement of the first and second pickup sections in the vertical and horizontal directions is small, and the work is moved. Loading can be performed at high speed.
In addition, by using the first slide table that moves rectangularly in the vertical direction and the second slide table that moves rectangularly in the horizontal direction instead of the first slide table, the work after cutting is efficiently collected. An intermediate mounting portion can be formed.
Further, the supply and collection of the storage tray on which the work is transferred by the storage pickup unit to the work transfer position is performed by holding a plurality of storage trays on the carrier by the storage tray transfer mechanism and transferring the work to the tray supply unit. Since the position, the work transfer position, and the tray storage portion are alternately moved, the supply and collection of the storage tray to the work transfer position can be continuously performed at high speed.
Therefore, without changing the orientation of the work after cutting between the cutting die and the pitch conversion unit and between the pitch conversion unit and the intermediate mounting unit, which are arranged in series along the work transfer direction at different height positions. Since the transfer is performed in synchronization, a series of operations from cutting of the work to storage in the storage tray through pitch conversion can be performed at high speed.
[Brief description of the drawings]
FIG. 1 is a plan view showing a layout configuration of a work storage device.
FIG. 2 is a front view of the work storage device of FIG. 1;
FIG. 3 is a right side view of the work storage device of FIG. 1;
FIG. 4 is a timing chart showing a movement operation of first and second slide tables.
FIG. 5 is a timing chart illustrating a transfer operation of a storage tray transfer mechanism.
FIG. 6 is an explanatory diagram illustrating an operation state of the storage tray transport mechanism.
FIG. 7 is an explanatory diagram showing an operation state of the storage tray transport mechanism.
FIG. 8 is an explanatory diagram showing an operation state of the storage tray transport mechanism.
FIG. 9 is an explanatory diagram illustrating an operation state of the storage tray transport mechanism.
FIG. 10 is a plan view showing a layout configuration of a conventional work storage device.
FIG. 11 is a front view of the work storage device of FIG. 10;
FIG. 12 is a right side view of the work storage device of FIG. 10;
FIG. 13 is a partially enlarged view of the work storage device of FIG. 2;
[Explanation of symbols]
W Work
1 cutting type
1a die
1b Shoot
2 substrate
3 Support rail
4 First pickup unit
5 Second pickup unit
6 Pitch conversion table
6a Work mounting part
7 First slide table
7a First table body
7b, 8b, 8d Guide rail
7c first table support
8 Second slide table
8a Second table body
8c Second table support
8e Fixed guide
9 Pickup support plate
10 Rail
11 27 Moving object
12,44 Linear guide
13 Ball screw
14, 15, 19, 20 Pulley
16, 21, 50 Timing belt
17 First drive motor
18 Table vertical cylinder
22 Second drive motor
23 Base plate
24 Support Post
25 Pickup for storage
26 Storage tray
28 Storage motor
29 Guide plate
30 tray supply unit
31 Tray storage section
32 Storage tray transport mechanism
33 Carrier
34, 35 Guide frame
36 Cylinder for separation
37, 38 Separating claws
39 Supply side cylinder
40, 42 Tray receiving member
41 Storage side cylinder
43 Transport rail
45 Carrier frame
46 Vertical moving cylinder for transport
47 Transport table
48 Guide Post
49 Post Guide
51 Tray butting part
52 Butt cylinder
53 Tray pusher
54 Storage Base
55 Side guide rail

Claims (5)

In a work storage device in which a work in which a semiconductor chip mounted on a substrate is sealed with resin is cut into individual pieces and stored in a storage tray,
A first pickup unit configured to transfer a work cut into pieces by a cutting die to a pitch conversion unit that changes a pitch in accordance with a storage tray pitch; and a first pickup unit that is provided at a different height from the first pickup unit. A work transfer unit including a second pickup unit that holds the work from the pitch conversion unit and transfers the work to the intermediate mounting unit;
A work storage unit that holds the work transferred at the storage tray pitch to the intermediate mounting unit and transfers the work to the storage tray;
The cutting die, the pitch conversion part and the intermediate mounting part are arranged in series at different height positions along the work transfer direction, and the first pickup part of the work transfer part is the second pickup than the cutting die. A work storage device, wherein each of the units holds a work from a pitch conversion unit, and transfers the work to the pitch conversion unit and the intermediate mounting unit in synchronization with each other to transfer the work. In the intermediate mounting portion, a work is transferred from the second pickup portion at the upper position, the work is transferred to the work storage portion, and the lower portion is vertically moved rectangularly so as to return to the original position at the lower position. The first slide table is replaced with the first slide table, the work is moved forward from the second pickup unit, the work is transferred to the work storage unit, and the work is retracted and returned to the original position. The work storage device according to claim 1, further comprising a second slide table that moves. The tray storage unit is configured to hold a work from the intermediate mounting unit and transfer the storage work to a storage tray waiting at a work transfer position, a storage pickup unit capable of reciprocating vertically and horizontally, and a stacker mounted on a tray supply unit. 2. The work according to claim 1, further comprising a storage tray transport mechanism for sending the empty storage trays to the work storage position one by one, and loading and storing the storage trays storing the works in the tray storage unit. Storage device. The storage tray transfer mechanism holds a plurality of storage trays on a transfer body and reciprocates between a tray supply unit and a work transfer position, and between a work transfer position and a tray storage unit. Item 4. The work storage device according to Item 3. In a work storage method in which a work in which a semiconductor chip mounted on a substrate is sealed with resin is cut into individual pieces and stored in a storage tray,
The process of transferring the work cut into pieces by the cutting die to a pitch conversion unit that converts the pitch according to the storage tray pitch, and the process of transferring the work whose pitch has been converted by the pitch conversion unit to the intermediate mounting unit. An intermediate transfer process performed synchronously,
A step of holding the work transferred at the storage tray pitch to the intermediate mounting portion and transferring the work to the storage tray,
A storage step of synchronizing a supply operation of supplying an empty storage tray to the work transfer position and a storage operation of storing a storage tray full of works, and
The intermediate transfer step is performed between the cutting die and the pitch conversion unit and the pitch conversion unit and the intermediate placement unit, which are arranged in series along the workpiece transfer direction at different height positions, and the orientation of the workpiece after cutting. The transfer of the work is performed synchronously without changing.

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