JPH11151720A - Method and apparatus for feeding insert work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease apparatus cost by facilitating control of descending movement of a suction part when it is avoided that works are damaged by pinching the works between each suction nozzle and a cavity during the suction part is moved by descending. SOLUTION: Descending movement of a suction part 81 is stopped by a feeding mechanism 80 just before the undersides of works w, w,... are brought into contact with the bottom faces of cavities 3, 3,... when the works w, w,... are sucked by the suction part 81 and the suction part 81 moves by descending toward the cavities 3, 3,.... In addition, a feeding control part 82 for releasing the works w, w,... from the suction nozzles 81a, 81a,... is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inserting an insert work into a cavity of a mold, and more particularly to a measure for avoiding damage to the insert work at the time of the insertion.

[0002]

2. Description of the Related Art Conventionally, when inserting an insert work into a cavity of a mold composed of an upper die and a lower die, a charging device having a suction nozzle at a lower end capable of sucking the insert work is generally used.

That is, after the insert work is sucked by the suction nozzle, the suction nozzle is first moved above the lower die, and then the suction nozzle is moved downward toward the cavity of the lower die. Then, the lower surface of the insert work comes into contact with the lower surface of the cavity of the lower die, and at the same time, the downward movement of the suction nozzle is stopped to release the insert work from the suction nozzle. This avoids damage to the insert work caused by colliding with the bottom surface of the cavity when the work is inserted into the cavity.

[0004]

However, in the case of the above-described conventional insert work loading apparatus, the insert work may be interposed between the suction nozzle and the cavity depending on the timing of stopping the downward movement of the suction nozzle. Therefore, it is necessary to control the descending movement of the suction nozzle with high accuracy, and there is a problem that the cost of the charging device is high.

The present invention has been made in view of the above points, and a main object of the present invention is to set a lower end of a suction nozzle in an insert work loading apparatus for loading an insert work into a mold cavity. By adding
An object of the present invention is to make it easier to control the downward movement of the suction nozzle and to reduce the apparatus cost.

[0006]

In order to achieve the above object, according to the present invention, when the suction nozzle that has sucked the insert work moves downward toward the lower cavity, the lower surface of the insert work is moved downward. Immediately before contacting the bottom surface, the downward movement of the suction nozzle was stopped, and the insert work was released from the suction nozzle.

Specifically, in the invention of claim 1, a suction nozzle for sucking an insert work at a lower end is used,
The premise is a method for inserting the insert work into the cavity of the lower mold of the upper and lower molds.

Then, when the insert work is sucked by the suction nozzle and the suction nozzle is moved downward toward the cavity of the lower mold, immediately before the lower surface of the insert work contacts the bottom surface of the cavity of the lower mold. ,
The downward movement of the suction nozzle is stopped, and at the same time, the insert work is detached from the suction nozzle and allowed to fall naturally into the cavity, thereby inserting the insert work into the cavity.

[0009] In the above configuration, when the insert work sucked by the suction nozzle of the insert work feeding device is loaded into the lower cavity, the suction nozzle moves downward toward the cavity. At this time, the downward movement of the suction nozzle is stopped immediately before the lower surface of the insert work contacts the bottom surface of the cavity,
The insert work separates from the suction nozzle and falls naturally into the cavity. This avoids a situation in which the insert work is sandwiched between the suction nozzle and the cavity and is damaged by the lower end of the suction nozzle. Further, since the insert work falls naturally just before the insert work comes into contact with the bottom surface of the cavity, the insert work is not damaged due to the fall.

According to a second aspect of the present invention, in the first aspect of the present invention, immediately after the lower surface of the insert work sucked by the suction nozzle enters the lower mold cavity, the downward movement of the suction nozzle is stopped. The insert work is detached from the suction nozzle.

In the above configuration, when the suction nozzle moves down toward the cavity of the lower mold, the down movement is:
Immediately after the lower surface of the insert work sucked by the suction nozzle enters the cavity, the downward movement of the suction nozzle stops, and the insert work separates from the suction nozzle. Thereby, the operation of the first aspect of the present invention is specifically and appropriately performed, and the insertion of the insert work into the cavity is ensured.

According to a third aspect of the present invention, there is provided an insert work loading apparatus used in the insert work loading method according to the first aspect of the present invention. When moving downward toward the cavity of the lower mold, immediately before the lower surface of the insert work contacts the bottom surface of the cavity of the lower mold, the lowering movement of the suction nozzle is stopped, and the insert work is removed from the suction nozzle. A control means for detachment is provided.

In the above configuration, the insert work is sucked by the suction nozzle of the suction mechanism and is moved into the lower mold cavity by the movement of the suction nozzle by the moving mechanism. Then, when the suction nozzle moves downward toward the cavity of the lower mold, immediately before the lower surface of the insert work contacts the bottom surface of the cavity,
The downward movement of the suction nozzle is stopped by the control means, and the insert work is detached from the suction nozzle, whereby the insert work falls naturally into the cavity of the lower die. Therefore, the same operation as in the first aspect of the invention is performed in this invention.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the control means moves down the suction nozzle immediately after the lower surface of the insert work sucked by the suction nozzle enters the lower mold cavity. It is configured to stop the movement and to separate the insert work from the suction nozzle.

In the above configuration, when the suction nozzle moves down toward the cavity of the lower mold, immediately after the lower surface of the insert work enters the cavity,
The downward movement of the suction nozzle stops, and the insert work separates from the suction nozzle. Therefore, also in the present invention, the same operation as in the case of the second aspect of the invention is performed.

According to the fifth aspect of the present invention, the third aspect or the fourth aspect of the present invention is provided.
In the invention of (1), the lower mold has a plurality of engaging portions on its mating surface. In addition, a plurality of positioning portions are provided around the suction nozzle to engage with the corresponding engagement portions of the lower die when the suction nozzle is moved downward to perform horizontal positioning with respect to the lower die of the suction nozzle. It is assumed that

In the above configuration, when the suction nozzle of the suction mechanism moves down with respect to the lower die, the engaging portion around the suction nozzle engages with the positioning portion of the mating surface of the lower die, whereby The horizontal positioning of the suction nozzle with respect to the lower mold is performed. Therefore, the insertion of the insert work into the cavity is further ensured.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows an entire configuration of a block forming machine into which the insert work input mechanism according to the embodiment of the present invention is incorporated.
As shown in FIG. 5, a high load transmission V-belt in which a number of blocks b, b,... Are arranged at equal pitches in the belt length direction and locked and fixed to a pair of tension bands a, a on both sides. Used for insert molding of the blocks b, b,. As shown in FIG. 6, the blocks b, b,... Extend in the belt width direction (left-right direction in FIG. 6) and are disposed on the back side of the belt (upper side in FIG. 6). A lower beam portion d arranged on the side (lower side in the figure) in parallel with the upper beam portion c and shorter than the upper beam portion c, and these upper and lower beam portions c and d are connected to each other at the center in the belt width direction. As shown by a broken line in the figure, substantially the entire surface of an H-shaped insert work w, w,... Having a substantially trapezoidal outer peripheral shape is formed of a molding material f such as a phenol resin. Is insert-molded in a state covered with.

The above block molding machine comprises an upper mold 1 and a lower mold 2
A multi-cavity mold A having a plurality of (four in the illustrated example) cavities 3, 3,..., And insert work w, w in the cavities 3, 3,.
The above-described insert work supply device B for supplying w,.
And the above-mentioned blocks b, b,...
And a block take-out device C for taking out.

The mold A is formed with an H-shaped runner along the mating surface of the upper mold 1 and the lower mold 2, and the cavities 3, 3,. Are arranged so that the portions corresponding to the upper beam portions c of the blocks b are connected at right angles. That is, the cavities 3 and 3 facing each other with the runner therebetween are in the opposite directions so that portions corresponding to the upper beam portion c face each other, and the cavities 3 and 3 located on the same side with respect to the runner are the same as each other. Orientation. On the other hand, the central portion of the runner has a substantially disk shape (see FIG. 15), and communicates with a lower end opening of a press-fit pot (not shown) provided to vertically pass through the center of the upper die 1. An injection unit (not shown) is connected to the press-fit pot. Guide pins 4, 4,... (See FIGS. 13, 14, and 19) are provided vertically at four corners of the mating surface of the upper mold 1. (See FIG. 11) serving as joint portions to perform positioning during mold clamping. Then, after the mold is opened, the lower mold 2 is moved from the lower mold 2 to the block b,
, and a plurality of ejector pins 6, 6,... for projecting the runner r upward.

The insert work supply device B includes a storage mechanism 10 for storing insert works w, w,..., And a suction nozzle 6 for suctioning the insert work w at a lower end.
1 and an alignment base 71 for aligning and placing the insert works w, w,.
, Of the storage mechanism 10 by the suction nozzle 61, and the transfer work aligning mechanism 50 for transferring the insert works w, w, ... on the alignment base 71 so as to follow the arrangement of the cavities 3, 3, ... of the lower mold 2. Each of the plurality (four in this case) of suction nozzles 81 that sucks the insert work w at the lower end
a, 81a,..., and has a suction portion 81 for collectively sucking the insert works w, w,... on the alignment base 71 of the transfer / alignment mechanism 50 while maintaining the aligned state. ., A loading mechanism 80 as an insert work loading device for batch loading the insert works w, w,... On the alignment base 71 into the cavities 3, 3,. The insert work supply device B has a mounting table 41 on which the insert work w is mounted, and the horizontal position of the insert work w on the mounting table 41 with respect to the suction nozzle 61 and the rotational position around the vertical axis. The transfer aligning mechanism 50 temporarily mounts the insert work w, w,... Sucked by the suction nozzle 61 on the mounting table 41 of the straightening mechanism 40. After the horizontal position and the rotation position around the vertical axis of the insert work w, w, ... are corrected by the correction mechanism 40, the insert work w, w, ... is sucked again by the suction nozzle 61 and transferred onto the alignment base 71. It has been made to be.

As shown in detail in FIGS. 7 to 9, the storage mechanism 10 of the insert work supply apparatus B is provided so as to extend in the vertical direction, has a work outlet at the upper end thereof, and has a plurality of inserts. Work w, w,
Are stacked in the up and down direction and a plurality of magazines 11 (ten in the illustrated example) are accommodated, and the stacked insert works w, w,... In the magazine 11 are raised toward the work outlet. A work elevating unit 12 to be moved;
An elevating sensor 13 comprising a light emitting device 13a and a light receiving device 13b for detecting the presence or absence of an insert work w located at a work outlet of the magazine 11, and the elevating sensor 13 having no insert work w at the work outlet of the magazine 11. And a lifting control unit 14 that controls the work lifting unit 12 so as to position the uppermost insert work w in the magazine 11 at the work outlet when detecting that.

The storage mechanism 10 is provided so as to be rotatable about a vertical axis, and the plurality of magazines 11, 1
Turntable 1 that holds 1, ... in a circumferential direction
5 and a table rotating unit 16 for rotating the turntable 15 in the clockwise direction in FIG. 7 so that each magazine 11 is sequentially positioned at the work removal position where the insert work w at the work removal opening is removed by the transfer alignment mechanism 50.
, A rotation proximity switch 17 for detecting the presence or absence of the insert work w, w,... In the magazine 11 positioned at the work removal position, and the rotation proximity switch 17 being inserted into the magazine 11 by the insert work w, w,. When it is detected that there is no magazine, a magazine 11 different from the magazine 11
(In the example shown, the magazine 1 adjacent in the counterclockwise direction is
A rotation control unit 18 that controls the table rotation unit 16 so that 1) is positioned at the work removal position.

Further, the storage mechanism 10 rotates the turntable 15 so that the insert work w,
Light-emitting device 19a and light-receiving device 19b for detecting the presence or absence of w,.
, And the confirmation sensor 19 is inserted into the magazine 11 with the insert work w,
When the absence of w,... is detected, for example, the rotation of the turntable 15 is stopped.

More specifically, each magazine 11 of the storage mechanism 10 has a main body 20 in which a work accommodating space having a substantially trapezoidal cross section extending vertically is formed, and the main body 20 is detachably mounted on a turntable 15. And an ascending / descending elevation formed on a side wall of the main body 20 located radially outward of the turntable 15 so as to penetrate the side wall in the radial direction and extend vertically. It has a slit 22 for use. That is, each magazine 11 is fixed to the turntable 15 such that the lifting slit 22 faces outward in the radial direction of the turntable 15. The lower end of the elevating slit 22 is formed continuously so as to extend around the fixed part 21. In addition, the upper ends of both side walls aligned in the circumferential direction of the turntable 15 of the main body 20 of each magazine 11,
That is, a first detection slit 23 for transmitting the optical axis of the elevating sensor 13 in the horizontal direction is formed in a portion of the magazine 11 corresponding to the work outlet.
Further, a second detection slit 24 for transmitting the optical axis of the confirmation sensor 19 in a horizontal direction is formed at each lower end of the both side walls.

The work elevating unit 12 of the storage mechanism 10
A plurality of (two in the illustrated example) columns 25, 25 arranged to extend in the vertical direction, respectively,
A support which is guided and supported so as to be able to ascend and descend by the turntable 15 so as to enter the magazine 11 at the work take-out position from the elevating slit 22 and move up and down. .. In the magazine 11 can be supported from below by a piece 26a. The lifting body 26 is arranged in parallel with the columns 25, 25 and penetrates the lifting body 26 in the vertical direction. And a motor 28 connected to the lower end of the feed screw 27 and moving the elevating body 26 up and down by rotating the feed screw 27 in forward and reverse directions. The above-described rotation proximity switch 17 includes the feed screw 2
7, when the lift 26 reaches the rising end, that is, when the lowermost insert work w in the magazine 11 is positioned at the work outlet of the magazine 11, the lift 26 Is detected and the above-described detection signal is output.

The table rotating section 16 of the storage mechanism 10
Has a motor 29 and a deceleration unit 30 which is drivingly connected to the motor 29 and reduces and outputs an input rotation speed from the motor 29.
5 is rotatably supported by the reduction unit 30 and is driven to rotate via the reduction unit 30. Also,
The table rotation unit 16 includes a detection rotation shaft 31 provided in the speed reduction unit 30 for detecting the rotation position of the turntable 15, and a rotation shaft 31 disposed near the rotation shaft 31 for rotating the rotation shaft 31. A count proximity switch 32 for detecting the number. Then, based on the output signal of the count proximity switch 32, the rotation control unit 18 turns the turntable 15 every time the detection rotation shaft 31 rotates a predetermined number of rotations.
Is stopped, and the motor 29 is controlled so that each magazine 11 is sequentially positioned at the work take-out position.

The correction mechanism 40 of the insert work supply apparatus B corrects the horizontal position and the rotational position of the insert work w on the mounting table 41 about the vertical axis, as shown in detail in FIGS. And two restricting portions 42a, 42a which can be opened and closed in a direction in which the restricting portions 42a, 42a contact the outer periphery of the insert work w on the mounting table 41. A pair of correction members 42, 42 and an opening / closing actuator 43 for opening and closing the correction members 42, 42 when the insert work w is placed on the mounting table 41.
Further, the correction mechanism 40 includes a mounting table 41 and the correction member 4.
2 and 42 are provided so as to rotate integrally about a vertical axis, and the rotational position of the insert work w on the mounting table 41 about the vertical axis is set to a predetermined angle (in the case of this embodiment, 180 °). ), A work rotating unit 44 that rotates the mounting table 41 and the correction members 42, 42 so as to change only the position.

Specifically, the mounting table 4 of the straightening mechanism 40
At two locations in the radial direction, there are provided substantially rectangular openings 41a, 41a penetrating in the vertical direction.
Correcting members 42, 42 are arranged in 1a, 41a so as to be able to open and close in the radial direction. The work rotating unit 44 of the correction mechanism 40 includes a rotation actuator 45, a disk-shaped base 46 rotatably supported by the rotation actuator 45 and drivingly connected thereto, and a radial base 2 of the base 46. It is composed of two columns 47, 47 erected at a location, and a support member 48 arranged to connect these columns 47, 47 in the horizontal direction. The opening / closing actuator 43 is attached to the support member 48 at the upper end. And
The mounting table 41 and the correction members 42, 42 are set to 18 for each insert work w to be transferred and aligned by the transfer alignment mechanism 50.
It is designed to rotate by 0 °.

The transfer / alignment mechanism 50 of the insert work supply apparatus B comprises a transfer mechanism 60 for operating the suction nozzle 61 and an alignment mechanism 70 for operating the alignment base 71. 60 is the transfer mechanism 60
, And a moving body 63 guided and supported by the guide rail 62 so as to be reciprocally movable in the transfer direction. A reciprocating actuator (not shown) for reciprocating the moving body 63 along the guide rail 62; and a suction nozzle 6 provided on the moving body 63.
1 for raising and lowering the actuator 1. Two compression coil springs 64a, 64a are interposed between the lifting actuator 64 and the suction nozzle 61 so as to extend in the vertical direction of the suction nozzle 61.

On the other hand, the aligning base 71 is guided to the aligning mechanism 70 of the transfer aligning mechanism 50 so as to be able to reciprocate in a direction orthogonal to the transferring direction of the insert works w, w,. One supporting guide rail 73;
An actuator (not shown) for reciprocating the alignment base 71 on the guide rail 73 along the guide rail 73 is provided. The alignment base 71 is provided so as to follow the arrangement of the cavities 3, 3,... Of the lower die 2, and has four substantially trapezoidal recesses 71a formed according to the planar shapes of the cavities 3, 3,. , 71a,...
That is, in the lower mold 2, the concave portions 71a, 71a corresponding to the cavities 3, 3 opposed to each other with the runner interposed therebetween are in opposite directions so that portions corresponding to the upper beam portion c of the block b face each other. Concave portions 71a, 71a corresponding to cavities 3, 3 located on the same side
Are in the same direction as each other. At this time, each recess 7
The planar shape of 1a is set smaller than the planar shape of the cavities 3, 3,. Further, a plurality of (two in this case) guide bushes 7 are provided on the alignment base 71.
Are provided following the arrangement of the guide bushes 5, 5,.

In the transfer / alignment mechanism 50 described above, the suction nozzle 61 of the transfer mechanism 60 is connected to the storage mechanism 10 in the transfer direction.
When the insert work w, w is transferred to the concave portions 71a, 71a on the side closer to the left side (FIG. 8), the insert work w, w is transferred to the concave portions 71a, 71a on the far side (the right side in FIG. 8). Sometimes, the alignment base 71 of the alignment mechanism 70
, The horizontal position for moving up and down is different. On the other hand, in the aligning mechanism 70, the concave portions 71a, 71a adjacent to each other in a direction orthogonal to the transfer direction (the left-right direction in FIG. 7).
When the insert work w is transferred to the
The alignment base 71 is moved along the guide rail 72 by the pitch between 1a and 71a. At this time, in the correction mechanism 40, the concave portion 7 on the side close to the storage mechanism 10 is used.
When the insert workpieces w, w,... Are transferred to 1a, 71a, the mounting table 41 and the correction members 42, 42 are at the rotation position in FIG. 7, and the insert workpieces w, w,. Is transferred to the mounting table 41
In addition, the rotational positions of the correction members 42 are reversed by 180 °.

The block unloading device C is shown in FIGS.
As shown in detail in FIG. 6, the suction ducts 91, 91,... Of the same number (here, four) as the blocks b, b,. 9
Block suction mechanism 90 that sucks corresponding blocks b, b,... From suction ports 91a, 91a,.
And the suction ducts 91, 9 of the block suction mechanism 90.
Each of the suction ports 91a of the blocks 1, 2,.
And a discharge port 110a for discharging the block b sucked into the corresponding suction duct 91 of the block suction mechanism 90 to the outside of the suction duct 91, respectively. (See FIG. 16) for separating the block b in the suction duct 91 from the suction duct 91, and outlets 110a, 110a,... Of these separation units 110, 110,.
, Respectively, which contain the blocks b, b,.

The receiving section 111 sorts and stores the blocks b, b,... For each cavity 3 of the mold A. That is, the storage section 111 is composed of a plurality of (eight in the illustrated example) storage boxes 111a, 111a,... Arranged for each corresponding separation section 110, and blocks b, b,. ... to accommodate. Further, the accommodation unit 111 accommodates the blocks b, b,... For each lot. In other words, a plurality (two in this case) of storage boxes 111a, 111a are arranged for each separation unit 110, and the blocks b,
are stored in different storage boxes 111a, 111a for each lot.

Each of the block unloading devices C is provided so as to be capable of opening and closing the discharge port 110a of the corresponding separation section 110, and the block b is closed by closing the discharge port 110a.
112, 1 for opening the discharge port 110a and discharging the reserved block b while retaining the discharge of the block b.
, A shutter actuator 113 for opening and closing these shutters 112, 112,..., Sensors 114, 114,... For detecting the presence or absence of the block b retained by the corresponding shutter 112, and all these sensors 114 , 114,... Correspond to blocks b, b,.
Are detected, all the outlets 110a, 110a,.
And an open / close control unit 115 for controlling the shutter actuator 113 so as to open the shutter.

More specifically, the block suction mechanism 90 of the block unloading device C has a vacuum unit 92 (see FIG. 16).
2, each suction duct 91 is connected. Each suction duct 91 includes a base end pipe 93 disposed on the vacuum unit 92 side, a distal end pipe 94 disposed on the suction port 91a side, and a flexible hose 95 connecting these two pipes 93, 94. And its proximal end pipe 93
Each separation unit 110 is interposed. The portion of the base pipe 93 upstream of the separation unit 110 is the separation unit 11.
0, and the downstream portion is a separation unit 110
A mesh member 116 for preventing the block b from passing downstream is provided at a connection portion with the side wall. In addition, the discharge port 110a is opened in the bottom wall of the separation unit 110, and the opening / closing control unit 115
, When a predetermined time has elapsed since the detection signals from all the sensors 114, 114,.
0a to be reopened.
Control.

The unloading moving mechanism 100 of the block unloading device C includes a moving unit 101 provided so as to be capable of moving forward and backward with respect to the mold A in the horizontal direction.
(Not shown) for moving the unit forward and backward, a pair of guide rails 102, 102 disposed in front of the moving unit 101 in the forward direction of the moving direction, and a pair of guide rails 102, 102 to move up and down. Elevating body 10 having an L-shaped cross section, which is supported and supported so as to extend in the direction in which moving unit 101 advances.
3 and an actuator 104 (see FIG. 18) for moving the elevating body 103 up and down.
03, the block suction mechanism 90
Are mounted so as to move integrally with the elevating body 103. More specifically, a notch concave portion 103a cut in a substantially rectangular shape is formed at the tip of the elevating body 103, and the tip-side pipes 94, 94,.
Are fixed to the lifting / lowering body 103 via the brackets 105, 105 so that 1a, 91a,...

The block unloading device C is adapted to move forward and backward integrally with each suction port 91a of the block suction mechanism 90 with respect to the runner r protruding together with the blocks b, b,. Provided runner r
And a runner chuck 121 that can capture the runner r when the runner chuck 121 moves forward and releases the captured runner r when the runner chuck 121 moves backward. A chuck actuator 122 to be operated is provided.

More specifically, a bracket 106 provided so as to straddle the notch 103a is disposed at the end of the elevating body 103 of the take-out moving mechanism 100. An actuator 122 is mounted with its output end facing down. The runner chuck 121 is provided so as to extend in the up-down direction. An upper end thereof is connected to an output end of the chuck actuator 122, and a lower end of the runner chuck 121 supports the central portion of the runner r from below. The inner periphery of the lower end is formed in a shape substantially following the outer periphery of the central portion of the runner r.

Further, the block unloading device C has a rotary brush 131 and a suction duct 132, as shown in detail in FIGS.
Are rotated to sweep out the foreign matter in the cavities 3, 3,.
a of the upper mold cleaning mechanism 130, the rotating brush 131 of the upper mold cleaning mechanism 130, and the suction port 132a of the suction duct 132 of the upper mold cleaning mechanism 130, with respect to the cavities 3, 3,. It has an upper mold cleaning moving mechanism 140 for moving forward and backward, a rotating brush 151 and a suction duct 152, and rotates the rotating brush 151 to sweep out foreign matter in the cavities 3, 3,. The lower die cleaning mechanism 150 that sucks foreign matter from the suction port 152a of the suction duct 152, the rotating brush 151 of the lower die cleaning mechanism 150, and the suction port 152a of the suction duct 152 of the lower die cleaning mechanism 150 are connected to the lower die 2. And a lower die cleaning moving mechanism 160 that moves forward and backward with respect to the cavities 3, 3,.

More specifically, the upper die cleaning mechanism 130 of the block unloading device C has an upper brush motor (not shown), and the rotary brush 131 is driven to rotate by the upper brush motor. . Also, the suction duct 132
An upper hood 133 having an upper surface opened in a rectangular shape and capable of covering the cavities 3, 3,... Of the upper mold 1 is connected to the suction port 132a of the upper hood 133. Are rotatably arranged about a horizontal axis. The upper die cleaning mechanism 130 shares the vacuum unit 92 with the block suction mechanism 90, and the suction unit 13 is attached to the vacuum unit 92.
2 are connected.

The moving mechanism 140 for cleaning the upper die of the block removing device C shares the moving unit 101 with the moving mechanism 100 for removing the block, and the guide rails 102, 102 of the elevating body 103 in the moving unit 101 are used. A pair of guide rails 141, 141 arranged to extend upward and vertically, and a pair of guide rails 14;
1, 141 so as to be able to move up and down,
Elevating body 103 toward the moving direction of mobile unit 101
Elevating body 1 provided to protrude further than in the case of
42, and an actuator 143 for moving the elevating body 142 up and down. The upper hood 133 of the upper die cleaning mechanism 130 is attached to the tip of the elevating body 142 in the advance direction. The rotating shaft 131a is rotatably supported via a pair of bearings 134 on both sides. One end (the right end in FIG. 19) of the rotating shaft 131a passes through a bearing 134, and a driven belt (not shown) is connected to the upper brush motor by a driven pulley 135 attached to the end. It is drive-coupled through.

On the other hand, the lower-type cleaning mechanism 150 of the block take-out device C has a lower brush motor (not shown), and the rotary brush 151 is driven to rotate by the lower brush motor. The lower surface of the suction die 152a of the suction duct 152 has a rectangular opening.
Lower hood 1 that can cover the cavities 3, 3,.
The rotating brush 151 is disposed inside the lower hood 153 so as to be rotatable around a horizontal axis. This lower mold cleaning mechanism 150 also shares the vacuum unit 92 with the block suction mechanism 90,
A suction duct 152 is connected to the vacuum unit 92.

The lower mold cleaning moving mechanism 160 of the block unloading device C includes the unloading moving mechanism 100 and the moving unit 1.
01 and guide rails 102, 102,
The elevating body 14 of the upper die cleaning moving mechanism 140 is supported by the guide rails 102 and 102 so as to be able to move up and down, and moves in the direction in which the moving unit 101 advances.
Lifting body 162 provided so as to protrude to the same degree as 2
And an actuator 163 for moving the elevating body 162 up and down. The lower hood 153 of the lower die cleaning mechanism 150 is attached to the tip of the elevating body 162 in the advance direction. Rotary shaft 15
1a is rotatably supported via a pair of bearings 154, 154 on both sides. One end (the right end in FIG. 19) of the rotating shaft 151a passes through the bearing 154,
A driven pulley 155 attached to the end is drivingly connected to the upper brush motor via a transmission belt (not shown).

In the present embodiment, as shown in FIGS. 1 to 3, the insertion mechanism 80 of the insert work supply device B has four suction nozzles 81a, 81a, Are integrally provided in accordance with the arrangement of the cavities 3, 3,... Of the lower mold 2, and the suction section 81 is provided with suction nozzles 81a,
When the insert works w, w,... Are adsorbed onto the lower dies 2 and move downward toward the cavities 3, 3,. , 3,... Immediately before coming into contact with the bottom surfaces of the suction sections 81, and a loading control section 82 as control means for releasing the insert work w, w,. I have. Specifically, the loading control unit 82 moves down the suction unit 81 immediately after the lower surfaces of the insert works w, w,... Sucked by the suction nozzles 81a enter the cavities 3, 3,. Stopping the movement and detaching the insert work w, w,... From each suction nozzle 81a.

Further, around the suction portion 81 of the charging mechanism 80, the suction portion 81 is engaged with the corresponding guide bushes 5 and 5 of the lower die 2 during the downward movement of the suction portion so as to be horizontal with respect to the lower die 2 of the suction portion 81. A plurality of (one in this case) positioning pins 83, 83 for positioning in the direction are vertically provided.

More specifically, the loading mechanism 80 is composed of a pair of upper and lower guide rails that extend transversely to the mold A in a direction perpendicular to the reciprocating direction of the alignment base 71 of the alignment mechanism 70. 84, 84, these guide rails 84,
A moving body 85 guided and supported by the mold A so as to be able to move forward and backward with respect to the mold A, a rodless cylinder 86 provided between the two guide rails 84 and 84 for moving the moving body 85 forward and backward, and a moving body 85. A pair of guide rails 85a, 85 arranged to extend in the vertical direction in front of the
and an elevating body 87 having an L-shaped cross section, which is guided and supported by these guide rails 85a, 85a so as to be movable up and down.
And an elevating cylinder 88 installed on the moving body 85 to move the elevating body 87 up and down. The suction portion 81 is integrated with the elevating body 87 on the lower surface side of the elevating body 87. It is provided to move. The lifting body 8
7 and a plurality of compression coil springs 87
are provided so as to extend in the vertical direction of the suction portion 81.

The moving body 85 of the loading mechanism 80 is provided with a protruding piece 85b for position detection which protrudes in the horizontal direction toward the fixed guide rails 84, 84.
On the fixed side (on the side of the guide rails 84, 84), the suction portion 8 is provided.
The suction position (the position in FIGS. 2 and 3) that moves up and down when the suction work 1 sucks the insert works w, w,... On the alignment base 71, and after the suction part 81 sucks the insert work w, w,. The stand-by position where the stand-by in the vicinity of the mold A stands and the insert work w, w,.
Proximity switches 84a, 84b, and 84c for detecting a loading position (the position in FIG. 1) that moves up and down when loading into the cavities 3, 3,. Further, dampers 89a for attenuating the horizontal movement of the moving body 85 by contacting the moving body 85 moving toward the suction position and the loading position, and restricting the horizontal movement at both ends of the guide rails 84, 84, respectively. A stopper 89b is disposed.

Next, the operation of the block molding machine configured as described above will be described. First, in the insert work supply device B of the block molding machine, the storage mechanism 1
The insert work w, w,... Of No. 0 are vertically stored and held in each magazine 11, and in the magazine 11 located at the work take-out position, the work elevating unit 12 faces the work take-out opening of the magazine 11. And moved up. And, the insert work w of the above work outlet
Is taken out of the magazine 11 by the suction nozzle 61 of the transfer / alignment mechanism 50, the absence of the insert work w located at the work take-out port is detected by the elevation sensor 13; The insert work w in the magazine 11 is controlled by the control unit 14 such that the uppermost insert work w in the magazine 11, that is, the insert work w immediately below the previously removed insert work w is positioned at the work outlet. , W,... Thereby, the insert work w, w,... Always located at a certain height position in the magazine 11 is sucked and taken out by the suction nozzle 61 of the transfer / alignment mechanism 50.

At this time, a plurality of magazines 11, 11,... Are held at equal intervals in the circumferential direction on a turntable 15 of the storage mechanism 10, and the insert work w, When there is no longer any insert work w, w,... in the magazine 11 positioned at the work take-out position from which the work w is taken out, this is detected by the rotation proximity switch 17, and the rotation control unit 18 controls the table rotation unit 16. Is controlled, the turntable 15 is rotated such that a magazine 11 different from the magazine 11 is positioned at the work take-out position. Therefore, a large number of insert works w, w,... Are sequentially and efficiently taken out one by one from the plurality of magazines 11, 11,.

Thereafter, the insert work w which is being transferred onto the alignment base 71 by the suction nozzle 61 of the transfer / alignment mechanism 50 is temporarily separated from the suction nozzle 61 and is mounted on the mounting table 41 of the correction mechanism 40. Is done. Then, after the horizontal position and the rotational position around the vertical axis are corrected on the mounting table 41, the insert work w is sucked again by the suction nozzle 61 and transferred onto the alignment base 71. This allows
The insert works w, w,... Are properly transferred onto the alignment base 71 regardless of the variation in the horizontal position and the rotational position of the insert works w, w,.

The horizontal position and the rotational position of the insert work w on the mounting table 41 of the correcting mechanism 40 are corrected, and the mounting table 41 and the correction members 42 and 4 are corrected.
2 is rotated by a predetermined angle (here, 180 °) around the vertical axis by the rotation actuator 45, so that the rotation position is changed by the above angle around the vertical axis. Therefore, the rotation position around the suction nozzle is changed for each insert work w, w,... Without rotating the suction nozzle 61 around the vertical axis.

On the alignment base 71 of the transfer alignment mechanism 50, the insert works w, w,... Are aligned in accordance with the arrangement of the cavities 3, 3,. Then, the insert work w, w,.
Are collectively thrown into the cavities 3, 3,... Of the lower mold 2 while the above-mentioned alignment state is maintained by the suction portion 81 of the throwing mechanism 80. At this time, the work of arranging the insert works w, w,... Can be performed in parallel with the insert molding work in the mold A, so that compared to the case where four insert works w, w,. Therefore, the efficiency of the charging operation is increased by the amount input in a lump.

The insert work w, w,...
Are concave portions 71a, 71 provided on the alignment base 71 according to the arrangement of the cavities 3, 3,... On the alignment base 71 when being aligned on the alignment base 71 of the transfer alignment mechanism 50.
a,... At this time, since the planar shape of each recess 61a is formed following the planar shape of the cavities 3, 3,..., The horizontal movement of each insert work w is restricted. Therefore, insert work w, w,
Are to be collectively adsorbed to the adsorption section 81 of the charging mechanism 80 while the alignment state is more reliably maintained. Further, the planar shape of each concave portion 71a corresponds to the cavities 3, 3,.
Is smaller than the plane shape of the insert work w,
are aligned on the alignment base 71 with higher accuracy than when they are put into the cavities 3, 3,.

Next, the insert work w, w,... On the alignment base 71 of the transfer / arrangement mechanism 50
Cavities 3 of the lower mold 2 which are adsorbed by the adsorption section 81
It is thrown into 3, ... At this time, when the suction portion 81 of the charging mechanism 80 moves downward toward the cavities 3, 3,..., The suction is performed immediately before the lower surface of the insert work w, w,. While the downward movement of the part 81 is stopped, the insert work w, w,.
Are naturally dropped into the cavities 3, 3,. This avoids a situation in which the insert work w is sandwiched between the suction nozzle 81a and the cavity 3 and is damaged by the lower end of the suction nozzle 81a. Also, the insert works w, w,... Fall naturally immediately before the insert works w, w,... Come into contact with the bottom surfaces of the cavities 3, 3,. No scratches occur.

When the suction section 81 of the loading mechanism 80 suctions the insert work w, w,... On the alignment base 71, the positioning pins 82 around the suction section 81 are guided by the guide bushes of the alignment base 71. By engaging with 72, 72, the horizontal positioning of the suction portion 81 with respect to the alignment base 71 is performed. Then, the suction part 81 is the lower mold 2
Insert work w, w,
Are transferred to the lower die 2
By engaging the guide bushes 5, 5, the suction portions 8
Positioning of the lower mold 2 in the horizontal direction is performed. At this time, since the guide bushes 72, 72 of the alignment base 71 are provided following the arrangement of the guide bushes 5, 5,... Of the lower die 2, the insert work w, w,. 2 are accurately injected into the corresponding cavities 3, 3,.

After the insert molding with the mold A is completed and the mold A is opened to the upper mold 1 and the lower mold 2, the molded blocks b, b,. In the block unloading device C, the suction port 91 of the block suction mechanism 90 is used.
a, 91a,... advance and move by the removal moving mechanism 100 to suck the blocks b, b,. Next, the blocks b, b,... Sucked by the suction ducts 91, 91,... Of the block suction mechanism 90 are separated from the corresponding suction ducts 91 by the respective separation units 110 and stored in the storage units 111. Therefore, the blocks b and b can be more easily removed than when the blocks are sucked one by one by the suction nozzle and taken out.
are taken out. At that time, the accommodation unit 111
Are accommodation boxes 111a, 11 arranged for each cavity 3.
, And blocks b, b,... Are accommodated in each accommodation box 111a. Therefore, blocks b, b,...
Are molded by the same cavity 3 and are sorted into those having extremely small dimensional variations. When the blocks b, b,... Are accommodated for each cavity 3,
The blocks b, b,...
1a. Therefore, these blocks b, b,...
Is prevented from being mixed between lots.

Are separated from the respective suction ducts 91 by the corresponding separating sections 110, and are retained by the shutters 112 on the discharge ports 110a. The presence or absence of the block b retained by the shutter 112 is determined for each of the shutters 112, 112,.
, And four blocks b,
When b,... are detected, the shutters 114, 114,.
Opens each outlet 110a. This clarifies that all the blocks b, b,... Have been reliably extracted.

After the mold A is opened, the suction ducts 91, 91, 91, and 91 of the block suction mechanism 90 are applied to the runner r protruding from the lower mold 2 together with the blocks b, b,.
The runner chuck 121 advances and moves with each suction port 91a to capture the runner r. Then, the runner chuck 121 retreats together with the suction ports 91a of the suction ducts 91, 91,... To release the captured runner r. Thus, the runner r is taken out together with the blocks b, b,.

After the blocks b, b,... And the runner r are taken out, the rotating brush 131 of the upper mold cleaning mechanism 130 and the suction duct of the cleaning mechanism 130 are removed from the cavities 3, 3,. 132, and the rotating brush 151 of the lower mold cleaning mechanism 150 and the suction port 152a of the suction duct 152 of the cleaning mechanism 150 with respect to the cavities 3, 3,. The reciprocating movement is performed a predetermined number of times by the cleaning moving mechanism 140 and the lower mold cleaning moving mechanism 160. Are swept out by the rotating brush 131 of the upper mold cleaning mechanism 130 and are sucked through the suction port 132a of the suction duct 132, while the cavities 3 of the lower mold 2 are sucked. , 3, ... are swept out by the rotating brush 151 of the lower mold cleaning mechanism 150 and the suction port 1 of the suction duct 152 is removed.
By being sucked from 52a, the insides of the cavities 3, 3,... Are cleaned for the next molding operation.

Here, the operation of the block unloading device C will be described in more detail with reference to the timing chart of FIG. During molding, the moving unit 101 of the unloading moving mechanism 100 is located at an intermediate position between the advanced position and the retracted position. 162 are both at the rising end, and the elevating body 142 of the upper die cleaning moving mechanism 140.
Is at the falling edge. The runner chuck 121 is open, and the vacuum unit 92 and the upper and lower brush motors are both turned off. Also, the separation units 110 and 11
The discharge ports 110a of 0,... Are all closed.

When the upper mold 1 and the lower mold 2 are opened after the insert molding in the mold A is completed, the moving unit 101 of the ejection moving mechanism 100 receives the mold opening signal from the mold A and moves the block ejection position. , And the elevating bodies 103 and 152 of the removal moving mechanism 100 and the lower mold cleaning moving mechanism 160 move down together. At the same time, the elevating body 142 of the upper die cleaning moving mechanism 140 moves up. And blocks b, b,
And the runner r are ejected from the lower mold 2 by the ejector pins 6, 6,..., The runner chuck 121 chucks the runner r, and the vacuum unit 92 operates to suck the blocks b, b,.

When the ejector pins 6, 6,... Retreat into the lower mold 2, the elevating body 103 of the take-out moving mechanism 100 moves up, and the moving unit 101 reciprocates between the take-out position and the intermediate position. (One reciprocation in the illustrated example), and the upper and lower brush motors operate to operate the upper mold cleaning mechanism 130.
And the upper and lower rotating brushes 131, 1 of the lower mold cleaning mechanism 150
51 is driven to rotate. And the rotating brushes 131 and 15
The foreign matter in the cavities 3, 3,... Swept out by 1 is sucked by the suction ducts 132, 152 of the upper mold cleaning mechanism 130 and the lower mold cleaning mechanism 150. Thus, the insides of the cavities 3, 3,... Of the upper mold and the lower mold are cleaned. When the cleaning operation is completed, the moving unit 101 is moved backward to the retracted position, the operation of the upper and lower brush motors is stopped, and the lifting / lowering body 142 of the upper mold cleaning moving mechanism 140 is moved down. 160 lifting bodies 162 move upward.

When the moving unit 101 retreats to the retreat position, the runner chuck 121 opens and discards the runner r to a discarding unit (not shown) by natural fall, while the operation of the vacuum unit 92 stops. Next, the mobile unit 101 advances to the intermediate position and stands by until the next unloading operation. On the other hand, the blocks b, b,... Sucked by the block suction mechanism 90 are
Are held on the shutters 112, 112,... And their presence is detected by the sensors 114, 114,. Then, all the shutters 112, 112,.
When the blocks b, b,... Are detected, the shutters 112, 112,.
Are opened and the blocks b, b,.

Therefore, according to the present embodiment,
In a loading mechanism 80 for insert work w, w,... Provided with a suction part 81 provided so that a plurality of suction nozzles 81 a for sucking the insert work w at the lower end move integrally, the suction part 81 is By absorbing the insert work w, w,...
When the lower surface of the insert workpieces w, w,... Comes into contact with the bottom surfaces of the cavities 3, 3,. An insertion control unit 82 for removing the insert work w, w,... From each suction nozzle 81a of the suction unit 81.
The suction nozzle 81a does not need high-precision control for the downward movement of the suction unit 81.
It is possible to avoid a situation in which the insert work w is sandwiched between the insert work w and the cavity 3 and the insert work w is damaged.

At this time, the suction nozzles 81a, 81a
When the lower surfaces of the insert workpieces w, w,... adsorbed by a,... enter the cavities 3, 3,. Since the workpieces w, w,... Are detached, the suction portions 81 are engaged with the corresponding guide bushes 5 and 5 of the lower die 2 to position the suction portions 81 relative to the lower die 2 in the horizontal direction. Locating pin 8
In combination with the provision of the inserts 3, 83, the insert work w, w,... Into the cavities 3, 3,.

In the above embodiment, the downward movement of the suction portion 81 is stopped after the insert work w, w,.
The specific stop time of the downward movement of the suction portion 81 can be appropriately set according to the size and shape of the cavities 3, 3,... And the insert work w, w,.

Further, in the above embodiment, the case of the charging mechanism 80 having four suction nozzles 81a, 81a,... Has been described. There may be.

Further, in the above embodiment, the case where the block used for the high-load transmission V-belt is formed has been described. However, the present invention can be applied to the case where another molded product is insert-formed. .

[0070]

As described above, according to the first aspect of the present invention, the suction nozzle for sucking the insert work is used at the lower end, and the lower die cavity of the die including the upper die and the lower die is used. As a method of inserting the insert work into the cavity by moving the suction nozzle downward while the insert work is being sucked by the suction nozzle, the insert work sucked by the suction nozzle is used to insert the insert work into the lower cavity. Immediately before contacting the bottom surface, the downward movement of the suction nozzle was stopped, and the insert work was detached from the suction nozzle and allowed to fall naturally into the cavity so that the insert work was thrown into the cavity. ,
It is possible to avoid a situation in which the insert work is sandwiched between the suction nozzle and the cavity and the insert work is not damaged, without requiring high-precision control of the downward movement of the suction nozzle. Reduction can be achieved.

According to the second aspect of the invention, immediately after the insert work sucked by the suction nozzle enters the cavity of the lower mold, the downward movement of the suction nozzle is stopped, and the insert work is separated from the suction nozzle. And let it fall naturally into the cavity to insert the insert work into the cavity,
The effect of the first aspect of the invention can be specifically and appropriately obtained.

According to the third aspect of the present invention, a suction nozzle for sucking an insert work at a lower end, and a lower die for sucking the insert work by a suction nozzle are provided as an insert work insertion apparatus used in the above-described insert work charging method. Control means for stopping the downward movement of the suction nozzle immediately before the lower surface of the insert work comes into contact with the bottom surface of the lower mold cavity, and for releasing the insert work from the suction nozzle when the lower surface of the insert work is moved downward toward the cavity. As a result, according to the present invention, the same effects as those of the first aspect of the invention can be obtained.

According to the fourth aspect of the present invention, the control means is used to stop the downward movement of the suction nozzle immediately after the lower surface of the insert work sucked by the suction nozzle enters the cavity of the lower die, and to perform the suction operation. Since the insert work is configured to be detached from the nozzle, the same effect as in the case of the second aspect of the present invention can be achieved by the present invention.

According to the fifth aspect of the present invention, when the lower die has a plurality of engaging portions on its mating surface, the lower die has a corresponding engaging portion around the suction nozzle. Since the plurality of positioning portions that engage with each other and perform horizontal positioning with respect to the lower mold of the suction nozzle are provided, accurate insertion of the insert work into the cavity can be further ensured.

[Brief description of the drawings]

FIG. 1 is a diagram showing a loading mechanism when inserting an insert work in an insert work supply device of a block forming machine according to an embodiment of the present invention from the right side of the block forming machine.

FIG. 2 is a diagram showing a loading mechanism when sucking an insert work from a right side surface of a block forming machine.

FIG. 3 is a plan view showing an input mechanism and an alignment mechanism of a transfer alignment mechanism in the insert work supply device.

FIG. 4 is a plan view showing the overall configuration of the block molding machine.

FIG. 5 is a perspective view schematically showing a part of a high-load transmission V-belt.

FIG. 6 is a plan view schematically showing a block used for a high-load transmission V-belt.

FIG. 7 is a plan view showing a storage mechanism, a correction mechanism, and a transfer alignment mechanism in the insert work supply device of the block molding machine.

FIG. 8 is a diagram illustrating a storage mechanism, a straightening mechanism, and a transfer alignment mechanism as viewed from the right side of the block forming machine.

FIG. 9 is a diagram showing the storage mechanism and the transfer mechanism of the transfer alignment mechanism as viewed from the front of the block forming machine.

FIG. 10 is an enlarged plan view showing a correction mechanism.

FIG. 11 is a sectional view taken along line XI-XI of FIG. 10;

FIG. 12 is a plan view showing a main part of a block unloading device of the block forming machine.

FIG. 13 is a sectional view taken along line XIII-XIII of FIG.

14 is a sectional view taken along line XIV-XIV of FIG.

FIG. 15 is a bottom view showing a main part of the block unloading device.

FIG. 16 is a cross-sectional view schematically illustrating another main part of the block unloading device.

FIG. 17 is a plan view showing an overall configuration of a main part of the block unloading device.

FIG. 18 is a front view showing the entire configuration of a main part of the block unloading device from the front of the block forming machine.

19 is a sectional view taken along line XIX-XIX in FIG.

FIG. 20 is a timing chart showing the operation of the block unloading device.

[Explanation of symbols]

 2 Lower die 3 Cavity 5 Guide bush (engagement part) 80 Input mechanism (insert work input device) 81a Suction nozzle 82 Input control part (control means) 83 Positioning pin (positioning part) A Mold w Insert work

Claims (5)

[Claims] 1. A method for inserting an insert work into a cavity of a lower mold of a mold including an upper mold and a lower mold using a suction nozzle for adsorbing an insert work at a lower end, the method comprising: When the insert work is sucked by the nozzle and the suction nozzle is moved downward toward the lower mold cavity, the suction nozzle is moved downward just before the lower surface of the insert work contacts the bottom surface of the lower mold cavity. And inserting the insert work into the cavity by detaching the insert work from the suction nozzle and allowing the insert work to fall naturally into the cavity. 2. The method according to claim 1, wherein the lowering of the suction nozzle is stopped immediately after the lower surface of the insert work sucked by the suction nozzle enters the cavity of the lower die. A method for inserting an insert work, wherein the insert work is detached from a nozzle. 3. An insert work input device used in the insert work input method according to claim 1, wherein a suction nozzle for sucking the insert work at a lower end, and wherein the suction nozzle sucks the insert work to form a lower die. Control means for stopping the downward movement of the suction nozzle and releasing the insert work from the suction nozzle immediately before the lower surface of the insert work comes into contact with the bottom surface of the lower mold cavity when moving downward toward the cavity; An insert work input device, comprising: 4. The insert work loading device according to claim 3, wherein the control means controls the downward movement of the suction nozzle immediately after the lower surface of the insert work sucked by the suction nozzle enters the cavity of the lower mold. An insert work input device configured to stop and detach the insert work from the suction nozzle. 5. The insert work loading device according to claim 3, wherein the lower die has a plurality of engaging portions on a mating surface thereof, and the lower die moves around the suction nozzle when the suction nozzle moves downward. An insert work input device, comprising: a plurality of positioning portions that are engaged with corresponding engagement portions of a mold and perform horizontal positioning with respect to a lower mold of the suction nozzle.