JP3572126B2 - Resin molding equipment with resin tablet alignment supply mechanism - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a resin molding apparatus having a resin tablet alignment supply mechanism for aligning a resin tablet in accordance with a pot arrangement of a mold die, transferring the resin tablet to the mold die, and performing resin molding.
[0002]
[Prior art]
2. Description of the Related Art In a multi-pot type transfer molding apparatus used for manufacturing a resin mold type semiconductor device, a resin tablet is supplied to each pot of a mold die for one molding operation to perform resin molding.
FIG. 8 shows a conventional example of a resin molding apparatus. In this resin molding apparatus, the resin tablet 101 is sequentially sent out in the longitudinal direction onto a table 103 from a parts feeder 102 that stores a cylindrical resin tablet 101. Then, it is chucked by a chuck mechanism 104 having chuck claws and aligned and stored in holders 105a and 105b provided with storage holes in the longitudinal direction. The chuck mechanism 104 opens the rotatable chuck on both sides, and stores the resin tablet 101 in the storage holes of the holders 105a and 105b in an upright state.
[0003]
The storage holes provided in the holders 105a and 105b are provided in accordance with the positions of the pots of the mold 107. After aligning and storing the resin tablets 101 in the respective storage holes from the parts feeder 102, the holders 105a and 105b are transported to the set plate position, and after being preheated by high-frequency heating, each resin tablet 101 is thrust up by a thrust cylinder or the like. Transfer to the loader 106.
The set plate is supported on a hot plate, and the lead frames to which the semiconductor elements are bonded from the supply magazine 110 are supplied one by one by the cutout plate 115 in units of four. It is rotated by 180 ° by the turntable 116 so as to be arranged in accordance with the accommodating portion, and is placed in a symmetrical position via the row of pots. Each of the lead frames is preheated by a hot plate via a set plate, and transferred to the inloader 106. The in-loader 106 is moved onto the mold 107 to supply the resin tablet 101 to the pot and the lead frame to the molded article accommodating section.
After the mold 107 is closed and the resin mold is performed, the molded product is transferred to the take-out position 108, and a gate break is performed to remove unnecessary resin. Collected in the storage unit 109.
[0004]
The configuration of the chuck mechanism 104 that stores the resin tablet 101 in the holders 105a and 105b in the resin molding apparatus will be described with reference to FIGS. As shown in FIG. 10B, the resin tablets 101 are sent out on a tablet rail 111 in a columnar sequence in a longitudinal direction, and are sequentially supplied onto a tablet table 112. The resin tablet 101 supplied onto the tablet table 112 is positioned at the chuck position by abutting the end surface of the leading end against the stopper 113.
Then, two resin tablets 101 are chucked by the chuck claws 104c and 104d attached to the tips of the chuck arms 104a and 104b shown in FIG. As shown in FIG. 9, the chuck arms 104a and 104b are closed vertically (solid line in FIG. 9) by driving a cylinder (not shown) and opened (opened in two directions in FIG. 9). (A chain line position) can be opened and closed. The chuck mechanism 104 is configured to be able to move up and down between a chuck position H and a retreat position I by a vertical cylinder mechanism (not shown).
[0005]
Above the tablet table 112, holders 105a and 105b are provided. As the holders 105a and 105b, as shown in FIG. 10 (b), a storage hole in which a resin tablet can be stored is formed in the opposed U-shaped longitudinal portion according to the pot arrangement of the mold 107. Can be Each time the chuck tablets 104a and 104b align and store the resin tablet 101, the drive mechanism (not shown) feeds the holders 105a and 105b by a fixed length to shift the set positions of the storage holes, thereby storing the resin tablet 101 in the respective storage holes. can do.
[0006]
The storage operation of the resin tablet 101 by the chuck mechanism 104 will be described with reference to FIGS.
First, the resin tablet 101 supplied to the chuck position H of the tablet table 112 moves the chuck mechanism 104 down to the chuck position H while the chuck arms 104a and 104b are closed at the closing position, and chucks the chuck pawls 104c and 104d. (Point (E) in FIG. 5 (3)).
Next, the chuck mechanism 104 is moved upward to the retracted position I above the storage position J to open the chuck arms 104a and 104b to the open position. At this time, the resin tablet 101 is disposed above the storage hole position of the holders 105a and 105b. Then, the chuck mechanism 104 is moved down again to the storage position to open the chuck claws 104c and 104d, and the length of the resin tablet is detected, and at the same time, the resin tablet 101 is stored by the detection pins 114 and 114 serving to push the resin tablet. Push it into the hole and store it (point G in FIG. 5 (3)).
Next, the chuck mechanism 104 is moved up again to the retracted position I to close the chuck arms 104a and 104b to the closed position (point F in FIG. 5 (3)). The resin tablet 101 supplied to 112 is chucked (point E in FIG. 5 (3)). The holders 105a and 105b are fed by a fixed size in preparation for storing the next resin tablet.
By repeating the one-pitch loading operation of the resin tablet 101 as described above, the resin tablet 101 is sequentially stored in the storage holes of the holders 105a and 105b.
[0007]
[Problems to be solved by the invention]
However, in the resin tablet aligning and feeding mechanism of the conventional resin molding apparatus, the pick-up line for chucking the resin tablet 101 by the chuck mechanism 4 and the input line for storing the picked-up resin tablet 101 in the holders 105a and 105b are the same. Therefore, before the chuck mechanism 104 stores the resin tablets 101 one by one into the left and right holders 105a and 105b, the chuck arms 104a and 104b must be moved up and down twice as shown in FIG. The resin tablet 1 pitch injection time t becomes longer.
For this reason, as the number of pots in the mold 107 increases, the time for aligning the resin tablets 101 to the holders 105a and 105b by the chuck mechanism 104 increases, which leads to a delay in machine time of the entire resin molding apparatus. I was
[0008]
The present invention has been made in view of such circumstances, and by shortening the time required for aligning and feeding a resin tablet to a holder by a chuck mechanism, it is possible to shorten the machine time of the entire apparatus and realize high-speed processing. An object of the present invention is to provide a resin molding apparatus provided with a resin tablet alignment supply mechanism.
[0009]
[Means for Solving the Problems]
The present invention has the following configuration to achieve the above object.
That is, in a resin molding apparatus equipped with a resin tablet alignment supply mechanism for aligning the resin tablet in accordance with the pot arrangement of the mold die, transferring the resin tablet to the mold die, and performing resin molding,
A plurality of holding means capable of holding the resin tablet on a vertically movable rotary plate, wherein the rotary plate is in a lower position What When moved, the part of the holding means holds the resin tablet and the other part of the holding means stores the previously held resin tablet in the holder, and the rotating plate is moved upward. What When moved, the holding means rotates while holding the resin tablet. To change the position, and simultaneously hold the resin tablet and store it in the holder with one vertical movement of the holding means. It is characterized in that the operation is repeated to perform the alignment supply of the resin tablet.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a plan view of a resin molding apparatus according to the present invention, FIG. 2 is a front view showing a configuration of a chuck mechanism, FIG. 3 is a left side view of the chuck mechanism of FIG. 2, and FIG. 5 is a timing chart showing the operation of the present invention and the conventional chuck mechanism.
[0011]
First, the overall configuration of the resin molding device will be described with reference to FIG.
Reference numeral 1 denotes a tablet supply unit serving as a tablet supply unit, which is equipped with a parts feeder 3 for accommodating and storing a cylindrical resin tablet 2. The parts feeder 3 supplies the resin tablet 2 onto the tablet table 4 continuously in a line in the longitudinal direction by a feeder. The parts feeder 3 is supplied in units of a number corresponding to the number of storage holes of a holder described later.
[0012]
Reference numeral 7 denotes a tablet storage unit that constitutes a tablet transfer unit. The tablet storage unit 7 is provided with a chuck mechanism 8 as a holding unit that holds the resin tablet 2 supplied onto the tablet table 4 by the parts feeder 3 and aligns and stores the resin tablet 2 in the holders 9a and 9b. The chuck mechanism 8 has a pair of openable and closable chuck arms capable of chucking two resin tablets 2 at a time on the chuck side and the storage side. The chuck arm is supported to be rotatable on a rotatable rotary plate (hereinafter referred to as a “base plate”) 10. When one arm pair chucks the resin tablet 2, the other arm pair is held by holders 9 a and 9 b. The operation of sorting and storing the resin tablet 2 is repeated. Specifically, the holders 9a and 9b are housed in storage holes formed in accordance with the arrangement of the pots in the longitudinal direction, and each time the base plate 10 is rotated by, for example, 180 ° while feeding the holders 9a and 9b by a fixed size, the chuck arm is moved. The resin tablet 2 is picked up and stored by alternately opening and closing the pair. For this reason, the front end of the resin tablet 2 supplied onto the tablet table 4 abuts against a stopper 4a (see FIG. 2) and is positioned at the chuck position.
[0013]
Reference numeral 11 denotes a transfer unit for transferring the resin tablet 2 and the lead frame to the molding die. The preheat unit heats the resin tablet 2 housed in the holders 9a and 9b by high frequency and transfers it to the inloader 12. Is Specifically, the delivery to the loader hand is performed by pushing up the resin tablet 2 by an uplift cylinder or the like.
Further, on the set plate provided on the hot plate 11a, the lead frames to which the semiconductor elements are bonded from the supply magazine 13 are supplied one by one by the cutout plate 14, and are sequentially loaded in accordance with the molding position of the mold. . Specifically, the lead frames are supplied one by one by the cut-out plate 14 in units of four, and are rotated by 180 ° by the turntable 11b so as to be arranged in accordance with the molded article accommodating portion of the molding die, and are fed through the pot row. It is placed so as to be a symmetrical position.
The set plate also serves as a preheating portion of the lead frame, and heats each lead frame to about 100 ° C. to 120 ° C. by a heater. By transferring the resin tablet 2 and the lead frame into the mold in a preheated state in this manner, a smooth resin mold without center shift can be realized.
The inloader 12 moves in the direction of the arrow in FIG. 1 and transfers it to the molding die while holding the lead frame and the resin tablet 2 to which the semiconductor elements are bonded, and transfers the lead frame and the resin tablet 2 to the lower die. And then return to the original position.
[0014]
Reference numeral 15 denotes a molding die, on which the lead frame and the resin tablet 2 conveyed by the inloader 12 are set on a lower die, and the lower die is raised to perform mold clamping, followed by resin molding.
A type detection unit 16 is formed on the mold 15 so that all types of data such as the type of the molded product 17 to be resin-molded when the die is replaced and the type of the lead frame can be determined. It is configured as follows.
[0015]
Reference numeral 18 denotes a molded product take-out portion, which is provided with an unloader 18a that can reciprocate on the mold 15. The unloader 18a moves onto the lower mold after the resin molding, transfers the molded product 17 released from the mold, and returns to the original position while holding the molded product 17.
The molded product 17 held by the unloader is transferred to a degate pallet of a movable table 20 movable in a direction perpendicular to the molded product removal direction, and a gate break is performed by twisting to remove unnecessary resin. Is done.
[0016]
Reference numeral 19 denotes a storage magazine for storing the molded product 17 from which unnecessary resin has been removed. The molded article 17 from which the unnecessary resin has been removed is transferred to the storage magazine 19 by the moving table 20 and stored in the magazine.
[0017]
Next, the configuration of the chuck mechanism 8 provided in the resin molding apparatus will be described with reference to FIGS.
2 and 3, reference numeral 21a denotes a lower base plate, 21b denotes an upper base plate, and the upper base plate 21b is supported by columns 21c, 21c standing upright on the lower base plate 21a. Reference numeral 22 denotes an up-down cylinder, which is provided as a drive unit for moving the chuck mechanism 8 up and down. The upper and lower cylinders 22 are configured to be able to protrude a cylinder rod below the upper base plate 21 b, and the tip of the rod is connected to a push-down plate 31.
Reference numeral 23 denotes a guide rod, which is provided on both left and right sides of the upper and lower cylinders 22. These are connected at the upper end to a connection arm 24 so as to interlock. The other ends of the guide rods 23 are inserted into the upper base plate 21b and connected to the support plate 25. When the vertical cylinder 22 is operated, the support plate 25 moves up and down while being guided by the guide rods 23 via the press-down plate 31.
As shown in FIG. 3, the connecting arm 24 is provided with a shock absorber 24a. When the chuck mechanism 8 moves down, the shock absorber 24a comes into contact with the upper base plate 21b and the chuck mechanism 8 stops. It is configured so as to absorb the shock when it is performed.
[0018]
A rotation shaft 26 is provided on the lower surface of the support plate 25, and the base plate 10 is attached to a tip of the rotation shaft 26. A rotation cylinder 27 is fixed to the upper surface of the support plate 25, and rotates the rotation shaft 26 and the base plate 10 attached thereto.
[0019]
On the lower surface of the support plate 25, detection cylinders 28, 28 are provided on both left and right sides, and detection rods 29, 29 driven by the detection cylinders 28, 28 are arranged at the storage position of the resin tablet 2. I have. Detecting pieces 29a, 29a are provided on the upper end sides of the detecting rods 29, 29, and detection sensors 29b, 29b for detecting the positions of the detecting pieces 29a, 29a are provided on the upper surface of the support plate 25. Is provided.
When the resin tablet 2 held in the storage position is inserted into the storage holes of the holders 9a and 9b by opening the chuck claws, the detection cylinders 28 and 28 are driven to move the detection rods 29 and 29 above the resin tablet 2. It is made to protrude so as to butt against the end face and is securely pushed into the storage hole. At this time, since the ends of the detection rods 29, 29 abut against the upper end surfaces of the resin tablets 2, 2, the detection sensors 29b, 29b detect the positions of the detection pieces 29a, 29a, and the length of the resin tablet 2 is reduced. It detects whether it is within the allowable range.
[0020]
Further, on the upper surface of the support plate 25, support rods 30 are provided upright at four places, and at the upper end of the support rod 30, a press-down plate 31 is supported. When the vertical cylinder 22 is driven, the press-down plate 31 moves up and down together with the support plate 25 on which the press-down plate 31 is supported. Further, the press-down plate 31 is moved upward to come into contact with and stop against the shock absorber 32 provided on the upper base plate 21b (see FIG. 3) so as to absorb the shock when the upward movement of the chuck mechanism 8 stops. It is configured.
[0021]
The base plate 10 is provided with first and second arm pairs 34 and 35 that are driven to open and close between a vertical direction and a horizontal direction via opening and closing cylinders 33 and 33 as arm opening and closing driving units. I have. Shock absorbers 36, 36 are provided on both ends of the base plate 10. When the first and second arm pairs 34, 35 are opened in a horizontal direction, the shock absorbers 36, 36 respectively contact the shock absorbers 36, 36. It is constituted so that it may be in contact with and absorb shock.
[0022]
At the distal ends of the first and second arm pairs 34 and 35, chuck claws 34a and 35a capable of chucking the resin tablet 2 are provided, respectively. The chuck claws 34a and 35a are claws provided in the arms. The opening and closing are configured by chuck cylinders 34b and 35b as opening and closing drive units. In addition, the first and second arm pairs 34 and 35 cause the first and second arm pairs 34 and 35 to chuck the resin tablet 2 or to hold the resin tablet 2 to the holders 9a and 9b by the operation of the vertical cylinder 22. It moves up and down between a lower position P to be stored in the storage hole and an upper position Q to rotate and open and close while the resin tablets 2 and 2 are being chucked.
3 and 4, the first arm pair 34 is disposed on a pickup line capable of chucking the resin tablet 2, and the second arm pair 35 can store the chucked resin tablet 2 in the storage holes of the holders 9a and 9b. Is placed on the appropriate input line. Since the pickup line and the charging line of the resin tablet 2 are arranged differently, the operating position can be changed alternately by rotating the rotation shaft 26 and the base plate 10 by 180 degrees by the rotation cylinder 27. It is configured as follows.
[0023]
In FIG. 2, a stopper 4a is provided on the tablet table 4 for abutting the end face of the supplied resin tablet 2 and positioning the same at the chuck position by the first and second arm pairs 34 and 35. ing. In addition, the transmission type sensor corresponds to the chuck position of each resin tablet 2 at both side positions (MM, NN in FIG. 4) sandwiching the resin tablets 2 and 2 positioned at the chuck position by the stopper 4a. It is provided. This transmission type sensor serves as a reference for operating the chuck mechanism 8 by detecting the supply of the resin tablets 2 and 2 to the chuck position.
Although the base plate 10 has a square shape, the base plate 10 may have another shape such as a circle as long as it does not interfere with other members.
[0024]
Next, an operation of aligning and charging the resin tablet 2 into the holders 9a and 9b by the chuck mechanism 8 configured as described above will be described with reference to FIGS.
First, in FIG. 2, the resin tablet 2 is sent out on the tablet rail 37 in a line in the longitudinal direction, and is continuously supplied to a chucking position where it hits the stopper 4 a on the tablet table 4.
[0025]
As described above, when the supply of the resin tablets 2 and 2 is detected by the transmission type sensor, first, the upper and lower cylinders 22 are operated to protrude the cylinder rods downward to push down the push-down plate 31, and simultaneously push down the support plate 25, and the chuck mechanism 8 is moved to the lower movement position P. At this time, the first arm pair 34 is in a vertically closed state, the second arm pair 35 is in a horizontally opened state, and the first arm pair 34 is disposed on a pickup line. The second arm pair 35 is arranged on the input line.
The first arm pair 34 operates the chuck cylinders 34b, 34b to move to the lower movement position P with the chuck claws 34a, 34a opened, and closes the chuck claws 34a, 34a, thereby holding the resin tablets 2, 2 together. Chuck (FIG. 5 (1) point C). At the same time, the second arm pair 35 operates the chuck cylinders 35b, 35b to open the chuck claws 35a, 35a, thereby holding the resin tablets 2, 2 (only the initial operation does not chuck the resin tablets 2, 2). An operation of loading the holders 9a and 9b is performed (point A in FIG. 5 (2)).
[0026]
Next, by operating the upper and lower cylinders 22 to return the cylinder rod upward, the push-down plate 31 and the support plate 25 are returned upward, and the entire chuck mechanism 8 is moved to the upward movement position Q.
[0027]
Next, the rotation cylinder 27 is operated to rotate the rotation shaft 26 and the base plate 10 by 180 °. Then, the first arm pair 34 moves on the insertion line, and the second arm pair 35 moves on the pickup line. Then, the opening / closing cylinder 33 of the first arm pair 34 is operated to open the first arm pair 34 horizontally on both left and right sides (point B in FIG. 5 (1)). Further, the second arm pair 35 is operated to operate the opening / closing cylinder 33 and is closed vertically (point D in FIG. 5 (2)).
In the present embodiment, the operation is sequentially performed in each step of upward movement → rotation → opening / closing → downward movement, but rotation and opening / closing may be operated together, and further upward movement while paying attention to interference. When performing in combination with (downward movement), it is possible to further reduce the time for aligning and charging.
[0028]
Next, the upper and lower cylinders 22 are operated to protrude the cylinder rods downward to push down the push-down plate 31 and the support plate 25, thereby moving the entire chuck mechanism 8 to the lower movement position P.
In the lower movement position P, the first arm pair 34 releases the chuck claws 34a, 34a by the chuck cylinders 34b, 34b, respectively, and puts the resin tablets 2, 2 into the storage holes of the holders 9a, 9b. At this time, the detection cylinders 28, 28 are driven to abut the detection rods 29, 29 against the upper end surface of the resin tablet 2, and the resin tablets 2, 2 are securely pushed into the storage holes. Further, since the ends of the detection rods 29, 29 abut against the upper end surfaces of the resin tablets 2, 2, the positions of the detection pieces 29a, 29a are detected by the detection sensors 29b, 29b. Is detected within a permissible range (point A in FIG. 5A). Each time the resin tablets 2, 2 are loaded, the holders 9a, 9b are fed by a drive mechanism (not shown) in a fixed direction in the direction of the arrow in FIG. 4 in preparation for the next loading of the resin tablets 2, 2.
At the same time, the second arm pair 35 operates the chuck cylinders 35b, 35b to move to the lower movement position P with the chuck claws 35a, 35a opened, and closes the chuck claws 35a, 35a, thereby closing the resin tablet 2. , 2 are chucked (point C in FIG. 5 (2)).
[0029]
By repeating the above operation, the operation of aligning the resin tablets 2 and 2 into the storage holes of the holders 9a and 9b is completed. The operation of aligning and feeding the resin tablets by the chuck mechanism 8 is performed by the number programmed in advance in the control unit in accordance with the number of pots in the mold 15.
[0030]
According to the above configuration, the chucking operation of the resin tablets 2 and 2 and the loading operation of the resin tablets 2 and 2 into the holders 9a and 9b are simultaneously performed by one vertical movement of the first and second arm pairs 34 and 35. By rotating the positions of the first and second arm pairs 34 and 35 by 180 °, the operation can be performed alternately and continuously, so that the pitch time T for one pitch of the resin tablet is substantially less than half of the conventional time t. Therefore, it is possible to shorten the resin alignment time. Therefore, it is possible to provide a resin molding apparatus that can contribute to shortening of the machine time of the entire apparatus and can perform high-speed processing.
[0031]
If the lengths of the resin tablets 2, 2 are not within the allowable range by the detection sensors 29b, 29b, they are discarded as defective resin tablets. If the length of the tablet is too short, the amount of the resin is insufficient, resulting in poor molding. If the length of the tablet is too long, it is difficult to take out the molded product.
[0032]
In the disposal operation of the defective resin tablet, first, the holders 9a and 9b are moved to position the storage hole in which the defective resin tablet is stored above the discharge cylinder (not shown). Next, the discharge cylinder is operated to push up the defective resin tablet from the holders 9a and 9b, and the defective tablet is chucked by any of the arm pairs arranged on the charging line and having the arms opened to the horizontal position.
Next, after the chuck mechanism 8 is raised by the upper and lower cylinders 22, the arm pair is closed vertically by the opening / closing cylinder 33, and the arm pair is rotated by 180 ° by the rotating cylinder 27 to be moved to the chuck side position. In addition, the tablet table 4 is moved to open a shutter (not shown), and the chuck of the defective resin tablet is released to drop the tablet into a tablet disposal box (not shown). In addition, the discharge of the defective resin tablet may be performed by pushing up with a discharge cylinder and sliding down to a waste box through a discharge shooter (not shown).
[0033]
In the above embodiment, since the resin molding is performed using the molded portions on both sides of the mold 15 (both sides are used for chase), as shown in FIG. 6A, the resin tablet 2 is attached to the holders 9a and 9b. They were arranged so as to be arranged in rows and transferred to a mold.
[0034]
On the other hand, when resin molding is performed using the one-side molding part of the mold 15 (one-side chase is used), the chuck mechanism 8 described in the present embodiment functions effectively. Specifically, as shown in FIG. 6B, for example, when the supply of the resin tablet 2 is detected by the transmission sensor A on the pickup line to supply the resin tablet 2 only to the holder 9b, The second arm pair 34, 35 chucks the resin tablet 2 by only one arm of the first arm pair 34 on the pickup line side, and rotates the base plate 10 by 180 ° to chuck the first tablet. The pair 34 is moved to the loading line side to perform the loading operation of the resin tablet 2 only on the holder 9b on one side and the chucking of the resin tablet 2 by only one arm of the second arm pair 35.
[0035]
According to the above configuration, it is possible to quickly align and supply the resin tablet to the one-side molded portion according to the type of the die to be used and the needs of the user.
[0036]
Next, another example of the chuck mechanism will be described with reference to FIG. Note that the same members as those of the above-described embodiment are denoted by the same reference numerals, and the description is referred to.
In the embodiment described above, each time the base plate 10 holding the first and second arm pairs 34 and 35 is rotated by 180 ° so that the arm pairs are alternately arranged on the pickup line and the input line, the resin tablet is rotated. Although the chucking operation and the loading operation of the resin tablets 2 and 2 are performed simultaneously, the present embodiment is configured such that the chucking operation and the loading operation of the resin tablets 2 and 2 are simultaneously performed every time the base plate is rotated by 90 °. It is composed.
[0037]
In FIG. 7, chuck arms 39, 40, 41, and 42 are respectively provided so as to hang down at positions shifted by 90 ° in the vicinity of the periphery of a disk-shaped vertical movement table 38 that moves up and down in conjunction with the driving of the vertical cylinder 22. Have been. The chuck arms 39, 40, 41, and 42 are moved downward by the vertical cylinder 22 to chuck the resin tablet via the vertical movement table 38 or to load the resin tablets 2 and 2 into the holders 9a and 9b. It is configured to move up and down between an upward movement position retracted above these positions. The chuck arms 39, 40, 41, and 42 are provided so as to hang down from the vertical movement table 38 by a coil spring 43, and are configured to be expandable and contractible by the elasticity of the coil spring 43.
The chuck arms 39, 40, 41, and 42 have built-in chuck cylinders 39b, 40b, 41b, and 42b that can open and close the chuck claws 39a, 40a, 41a, and 42a provided at the tips. The vertically moving table 38 is configured to be rotatable by a rotating cylinder (not shown).
Although the chuck arms 39, 40, 41, and 42 are respectively attached to the vertical movement table 38 via the coil spring 43, they may be configured to be vertically movable by driving a cylinder.
[0038]
Further, two tablet rails 37 for supplying the resin tablet 2 are provided on the tablet table 4, and the resin tablets 2 and 2 are simultaneously supplied to, for example, chuck arms 39 and 41 which are arranged to be opposed by 180 °. It is configured to: Further, on the tablet table 4, stoppers 4a, 4a for setting the resin tablets 2, 2 at the chuck position are provided at two places. Near the stoppers 4a, 4a, transmission type sensors (not shown) for detecting that the resin tablets 2, 2 are set at the chuck position are provided, respectively.
[0039]
Further, the resin tablets 2, 2 conveyed on the tablet rails 37, 37 are sequentially fed to the chuck position in such a manner that short-sided cylindrical surfaces continue. The storage holes of the holders 9a and 9b for aligning and storing the resin tablets 2 and 2 correspond to the chuck positions of the chuck arms 40 and 42 rotated by 90 degrees in the rotation direction (the direction of the arrow in the drawing) with respect to the chuck position of the resin tablets 2 and 2. Set according to the tip position. That is, the pick-up line and the input line of the resin tablets 2 and 2 are arranged to be orthogonal to each other on the vertical movement table 38. Each time the resin tablets 2 and 2 are loaded, the holders 9a and 9b are fed in a fixed size by a driving unit (not shown) to prepare for loading into the next storage hole.
[0040]
A description will be given of the operation of aligning and loading the resin tablets by the chuck mechanism. In FIG. 7, the resin tablets 2, 2 are sent out on the tablet rails 37, 37 in a line in the short direction, and the stoppers on the tablet table 4 are stopped. 4a, and are continuously supplied to the chuck position abutting on 4a.
[0041]
When the supply of the resin tablets 2 and 2 is detected by the transmission type sensor described above, when the upper and lower cylinders 22 are operated, the cylinder rod is protruded downward to lower the vertical movement table 38.
At this time, the chuck arms 39 and 41 are moved to the lower movement position near the tablet table 4, and the chuck cylinders 39b and 41b chuck the resin tablets 2 and 2 set at the chuck positions while the chuck claws 39a and 41a are opened. .
Further, the chuck arms 40 and 42 are moved to the lower movement positions on the holders 9a and 9b, and the chuck claws 40a and 42a are opened by the chuck cylinders 40b and 42b to perform the loading operation of the resin tablets 2 and 2 (initial operation). The operation does not insert the tablet.)
[0042]
Next, after the vertically moving table 38 is moved up by the vertically moving cylinder 22, the vertically moving table 38 is rotated by 90 ° in the direction of the arrow in FIG. At this time, the chuck arms 40 and 42 move on the pickup line, and the chuck arms 39 and 41 are arranged on the input line.
[0043]
Next, the vertical movement table 38 is moved down again by the vertical cylinder 22. At this time, the chuck arms 39 and 41 are moved to the lower movement positions on the holders 9a and 9b, and the chuck claws 39a and 41a are opened by the chuck cylinders 39b and 41b to perform the operation of loading the resin tablets 2 and 2. At the same time, the chuck arms 40, 42 are moved to the lower position near the tablet table 4, and the chuck tablets 40b, 42b chuck the resin tablets 2, 2 set at the chuck positions while the chuck claws 40a, 42a are opened.
Each time the resin tablets 2, 2 are loaded, the holders 9a, 9b are fed by a fixed size in preparation for the next loading of the resin tablets 2, 2.
[0044]
Also according to the above configuration, by performing the chucking operation and the loading operation of the resin tablets 2 and 2 at the same time, the pitching time of one pitch can be shortened and the alignment loading operation of the resin tablet can be performed quickly. Further, since the opening / closing operation (90 ° opening / closing) of the chuck arm is not necessary, the mechanical structure can be simplified.
[0045]
The present invention is not limited to the above-described embodiment. For example, the number of arms held on a rotatable base plate may be further increased, or a rotation angle for moving the arms may be changed. Of course, other modifications can be made without departing from the spirit of the invention, such as using a suction pad other than a chuck as a mechanism for holding the resin tablet.
[0046]
【The invention's effect】
According to the present invention, as described above, the chucking operation of the resin tablet and the loading operation to the holder are simultaneously performed by one vertical movement of the first and second arm pairs, and the positions of the first and second arm pairs are adjusted. Since the rotation can be performed 180 °, the resin tablet can be alternately and continuously performed, so that the injection time of one pitch of the resin tablet is less than half of the conventional injection time, so that the resin alignment time can be shortened.
Therefore, it is possible to provide a resin molding apparatus that can contribute to shortening of the machine time of the entire apparatus and can perform high-speed processing.
[Brief description of the drawings]
FIG. 1 is a plan view of a resin molding apparatus according to the present invention.
FIG. 2 is a front view showing a configuration of a chuck mechanism.
FIG. 3 is a left side view of the chuck mechanism of FIG. 2;
FIG. 4 is a top view of the chuck mechanism.
FIG. 5 is a timing chart showing the operation of the present invention and a conventional chuck mechanism.
FIG. 6 is an explanatory view showing another use mode of the chuck mechanism.
FIG. 7 is an explanatory view of a chuck mechanism according to another example.
FIG. 8 is an explanatory view of a conventional resin molding apparatus.
FIG. 9 is an explanatory view showing a configuration of a conventional chuck mechanism.
FIG. 10 is a side view and a partial explanatory view of a conventional chuck mechanism.
[Explanation of symbols]
1 tablet supply department
2 resin tablet
3 Parts feeder
4 tablet table
4a Stopper
7 Tablet storage section
8 Chuck mechanism
9a, 9b holder
10 Base plate
11 transfer unit
12 Inloader
13 Supply magazine
14 Cutting plate
15 Mold
16 Type detection section
17 Molded product
18 Mold removal section
18a Unloader
19 Storage Magasin
20 Moving table
21a Lower base plate
21b Upper base plate
21c prop
22 Vertical cylinder
23 Guide rod
24 Connecting arm
24a, 32, 36 Shock absorber
25 Support plate
26 Rotation axis
27 Rotating cylinder
28 Detection cylinder
29 Detection rod
29a Detection piece
29b Detection sensor
30 Support rod
31 Push-down plate
33 opening / closing cylinder
34 1st arm pair
35 Second arm pair
34a, 35a, 39a, 40a, 41a, 42a Chuck claws
34b, 35b, 39b, 40b, 41b, 42b, 43 Chuck cylinder
37 Tablet Rail
38 Vertical table
39,40,41,42 Chuck arm

Claims (4)

In a resin molding apparatus having a resin tablet alignment supply mechanism for aligning a resin tablet according to a pot arrangement of a mold die, transferring the resin tablet to the mold die, and performing resin molding,
A plurality of holding means capable of holding the resin tablet are provided on a rotatable plate which can move up and down, and when the rotating plate moves to a lower position , some of the holding means hold the resin tablet and hold another part. means houses a resin tablet held above the holder, said holding means and the rotary plate is moved to the upward position, change the position and remain rotating holding the resin tablet, of one said retaining means A resin molding apparatus having a resin tablet aligning and feeding mechanism characterized in that an operation of simultaneously holding a resin tablet and storing it in a holder by vertical movement is repeated to perform aligning and feeding of the resin tablet. 2. The resin tablet arrangement according to claim 1, wherein in the resin tablet arrangement supply mechanism, a pickup line for holding the resin tablet and an input line for accommodating the resin tablet in the holder are arranged differently. 3. A resin molding device equipped with a supply mechanism. The resin tablet aligning and feeding mechanism is between a lower position where the resin tablet is chucked and the previously chucked resin tablet is stored in a holder, and an upper position where the resin tablet is turned and opened and closed while the resin tablet is being chucked. A chuck mechanism having a plurality of arm pairs that can move up and down with
A drive unit for vertically moving the chuck mechanism, a rotating unit for rotating a rotary plate supporting the arm pair, an arm opening / closing drive unit for opening and closing the arm pair, and a tip unit of the arm pair. A driving unit having a claw opening / closing drive unit for opening and closing the chuck claw,
The resin molding apparatus according to claim 1 or 2, further comprising: a resin tablet alignment supply mechanism. The first and second arm pairs held by the rotating plate simultaneously perform the operation of chucking the resin tablet and the operation of storing the previously chucked resin tablet in the holder when the chuck mechanism moves to the lowering position . It performed, the first when the chuck mechanism is moved to the upward position, the second arm pair is rotating the rotary plate as interchanged by the pickup line and the input line, the first, the second arm pair horizontal and vertical 4. The resin molding apparatus according to claim 3, wherein the resin tablet is opened and closed between directions.

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