JPH1024449A - Gate cut part processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize automatic conveyance and stock of a molded article by a method wherein a reciprocating conveyance of the molded article between a gate cut part processing device and a product stock device is performed with a conveying device. SOLUTION: A plurality of processing stations consist of a receiving/ unloading station 2A, at which the receiving of a molded article L having an un-processed gate cut part and the unloading of a molded article having a processed gate cut part are executed, a finish-cutting state 2B of the gate cut part of the molded article L, a deburring station 2C of the gate cut part of the molded article L and a reserve station 2D for adding other process. Since the station for receiving the molded article L having the un-processed gate cut part and the station for unloading the molded article having the processed gate cut part are the same as the receiving/unloading station 2A due to the circulatory movement of the molded article L, only by providing a conveying device 19 at one site, thus system can be returned to its initial position after the processing of the un-processed molded article L.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate cut section processing system for performing processing such as finishing of a gate cut section of a molded product separated from a runner portion by cutting a gate.

[0002]

2. Description of the Related Art Since a plastic molded product molded by an injection molding machine is taken out with a runner or a spool attached thereto, after molding, a gate must be cut to separate the molded product from the runner portion. Must be normal. Recently, for the purpose of labor saving, various gate cutting devices for automatically cutting off a molded product (hereinafter, referred to as a molded product) of a product portion from a molded product with a runner taken out of a molding machine are becoming widespread. .

However, for example, the gate cut portion of a precision molded product such as a pickup lens used in a CD player needs to be subjected to a gate cut portion process such as finishing. Conventionally, such a gate cut portion has been manually processed by a worker to perform a gate cut portion process such as finish cutting or finishing by polishing. In addition, the pallets containing the molded products and the transportation and stocking of the molded products have been handled manually.

[0004]

However, in the manual operation of the above-mentioned conventional worker, there is a problem that the worker must have skilled skills. Therefore, unless you work with many skilled workers,
There have been problems such as a decrease in the operation rate and an increase in cost. Further, unless a skilled technician is employed, the accuracy of the product cannot be improved, and defective products are produced, and the quality becomes unstable.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional drawbacks described above, and to automatically perform a gate cut section processing of a gate cut section of a molded product separated from a runner portion, and automatically transport and stock the molded product. And a gate cut section processing system.

[0006]

In order to achieve the above object, the present invention provides a gate cut section processing apparatus for processing a gate cut section of a molded product cut from a runner portion by cutting a gate. A product stocker device for stocking products; and a transport device for reciprocating the molded product between the gate cut section processing device and the product stocker device. Further, the gate cut section processing apparatus includes a plurality of processing stations, and the molded product circulates and moves through the plurality of processing stations. Further, the product stocker device arranges and stocks the molded products on the stacked pallets. Further, the transfer device sucks and transfers the molded product.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a gate cut section processing system of the present invention will be described with reference to the drawings.
explain.

First, a molded product will be described. As shown in FIG. 20, a plastic molded product L0 molded by an injection molding machine is provided with a runner L on a molded product L in a portion to be a lens product.
r is taken out with it still attached. Therefore, after molding, the gate Lg0 is cut to separate the molded product L of the lens product portion from the runner portion Lr. In the lens molded product L cut from the runner portion Lr by cutting the gate Lg0 shown in FIG. 20, the gate cut portion Lg remains as shown in FIG. In order to form a lens product, the end Lgc of the lens molded product L must be cut as shown in FIG.

Next, a pallet for storing the molded product L will be described. FIG. 18 and FIG. 19 are views showing a pallet for storing a molded product. FIG. 18 shows a plan view of the pallet P, and FIG. 19 shows a side view thereof. As shown in FIG.
The pallet P has members Pa attached to the four corners of the plate member Pd. As shown in FIG. 19, the upper part of the member Pa has a projection Pb, and the lower part has a hole Pc. Projection Pb
The holes Pc are designed such that the projections Pb are inserted into the holes Pc in order to stack a plurality of pallets P. The holes Pc are also used for pallet positioning devices 7 and 12 described later. Within the dashed line of the plate-shaped member Pd shown in FIG. 19, a large number of depressions (not shown) on which a large number of molded products L are placed are provided in a lattice shape. The molded product L is placed in the depression, aligned and stocked. The pallets P on which the molded products L are arranged are stacked. As described above, the molded product L
Are arranged on the pallet P, the movement of the molded product between the product stocker device 2 and the transport device 3 is facilitated, and waste is eliminated. Further, as will be described later, since the worker supplies the unprocessed molded products to the product stocker device 3 and carries out the processed molded products, a large number of molded products can be handled at one time, and the working efficiency is improved.

Next, the configuration of the gate cut section processing system of the present invention will be described. FIG. 1 is a plan view showing the entire gate cut section processing system 1 of the present invention, and FIG.
Is a front view thereof. FIG. 3 is a plan view showing details of the gate cut section processing system 1, and FIG. 4 is a front view thereof. FIG. 5 is a partial cross-sectional view showing details of the gate cut section processing device 2.

As shown in FIG. 1, a gate cut section processing system 1 includes a gate cut section processing apparatus 2 for processing a gate cut section Lgc of a molded article L shown in FIG. 20, and a product for stocking the molded article L. It mainly includes a stocker device 3 and a transport device 19 for reciprocating the molded product L between the gate cut section processing device 2 and the product stocker device 3.

Next, the gate cut section processing device 2 will be described. As shown in FIG. 1, the gate cut section processing device 2
Is a disk-shaped index table 4 for rotating and feeding the molded product L at a pitch, a finish cutting machine 5 for finish-cutting the molded product L, a deburring machine 6 for removing burrs generated by the finish cutting, and a pressing device 15. , 16, a box 22 on which they are placed, and an operation panel 14 for operating the gate cut section processing device 2. A caster 29 is attached to the bottom surface of the box 22. The gate cut section processing device 2 on the floor surface 20 can be moved or fixed.

Further, the gate cut section processing device 2 has a structure shown in FIG.
As shown in the figure, a plurality of stations 2A, 2B, 2C,
2D, and the molded article L includes a plurality of stations 2A, 2A.
B, 2C, and 2D are configured to circulate.
The periphery of the index table 4 is a plurality of stations 2A, 2B, 2C, 2D. The pitch feed of the molded article L to the plurality of processing stations 2A, 2B, 2C, 2D is performed by using an index table 4 which is a rotating member.
It is. Details of the index table 4 will be described later.

The plurality of processing stations are a receiving / unloading station 2A for receiving the molded product L of the gate cut portion unprocessed Lg and removing the molded product having been subjected to the gate cut portion shown in FIG. 21, and a receiving / unloading station. A finishing cutting station 2B for finish-cutting the gate cut portion Lg of the molded product L supplied from 2A, and a gate cut portion Lg of the molded product L supplied from the finishing station 2B.
And a spare station 2D for adding other processing.
Since the molded article L circulates and moves, the station for receiving the unprocessed molded article L at the gate cut portion and the station for taking out the processed molded article are the receiving / unloading stations 2A, which are the same stations. Therefore, only by providing one transfer device 19, the unprocessed molded product L taken out of the product stocker device 3 can be returned to the original position after processing, and there is no waste in the transfer time. Furthermore, space is saved.

As shown in FIG. 1, each of the processing stations 2A, 2B, 2C and 2D is at a position equidistant from the rotation axis 41a of the index table 4 and at an equal angle. That is, the distance between the receiving / unloading station 2A and the rotating shaft 41a, the distance between the finishing station 2B and the rotating shaft 41a, the distance between the deburring station 2C and the rotating shaft 41a, and the distance between the preliminary station 2D and the rotating shaft 41a are the same. Distance. And receiving / unloading station 2
The angle formed between the line connecting A and the rotating shaft 41a and the line connecting the finishing station 2B and the rotating shaft 41a is 90 °.
It is. The angle between the line connecting the finishing station 2B and the rotary shaft 41a and the line connecting the deburring station 2C and the rotary shaft 41a is also 90 °. The angle formed by the line connecting the deburring station 2C and the rotary shaft 41a and the line connecting the preliminary station 2D and the rotary shaft 41a is also 90 °. Spare station 2D and rotating shaft 41a
And a line connecting the receiving / unloading station 2A and the rotating shaft 41a is also formed at an angle of 90 °.
Each is set at an equal angle.

Therefore, it is possible to simultaneously perform a plurality of gate cut sections in the plurality of stations 2A, 2B, 2C, and 2D of the molded article L. Useless time such as processing wait time is eliminated, and the cycle time from the start to the end of the process is reduced. Each processing station 2A, 2B, 2C, each time the index table 4 is sent by one pitch,
Processing operations in 2D can be performed simultaneously, simplifying control. Further, since the above equal angle 90 ° is an angle that is a divisor of 360 °, the pitch feed rotation angle of the index table 4 is always constant. The unprocessed molded article L received at the receiving / unloading station 2A is a flow operation returning to the station 2B, the deburring station 2C, the preliminary station 2D, and again to the receiving / unloading station 2A.

At the receiving / unloading station 2A, FIG.
The transfer device 19 is connected as shown in FIG. In the finishing cutting station 2B and the deburring station 2C,
The processing machine is installed so that the processing unit is located at the station. A finish cutting machine 5 is installed in the finish cutting station 2B, and a processing machine of a deburring machine 6 is installed in the deburring station 2C.

Next, the index table 4 will be described. FIG. 9 is a plane showing an index table. The index table 4 has four protrusions 4A, which are located at the same distance and the same angle from the rotation shaft 41a.
A disk-shaped base 40 having 4B, 4C, and 4D;
It is mainly composed of a motor 41 for rotating the base 40 and a molded article installation member 42 attached to four projections 4A, 4B, 4C and 4D of the base 40. A molded article installation member 42 is attached to each of the four protrusions of the base 40. The molded article installation member 42 has a pair of positioning holes 43. The pair of positioning holes 43 are accurately positioned on the rotating shaft 4.
It is set to be at the same distance and the same angle from 1a. That is, the position is a point target with respect to the rotation shaft 41a. Even if the index table 4 is rotated by 90 °, the pair of positioning holes 43 at four locations are set to always be at the same position.

The molded article installation member 42 has a U-shaped notch, and the notch is provided with a pair of molded article installation holes 44 in which a pair of molded articles L are placed. Similarly to the hole 43, the pair of molded product installation holes 44 are set so as to be positioned at exactly the same distance and at the same angle from the rotation shaft 41a. That is, the position is a point target with respect to the rotation shaft 41a. Even if the index table 4 is rotated by 90 °, the pair of molded products L placed at the four positions placed in the molded product installation holes 44 are always set to “the same position”. The molded product installation hole 44 is mounted such that a pair of molded products L protrudes into a U-shaped notch and the respective gate portions face each other (FIG. 1).
6, see FIG. 17, details will be described later. ). The base 40 performs an accurate operation of being rotated by 90 ° by the motor 41 and stopped. Therefore, the two molded products are accurately moved to the respective positions of the processing stations 2A, 2B, 2C, 2D and stopped accurately. That is, the index table 4, which is a rotating member, has four protrusions 4A, 4B,
The plurality of molded products L are placed in the plurality of molded product installation holes 44 of 4C and 4D, and the processing stations 2A, 2B, 2C, and 2
A plurality of molded articles L are fed at the same position of D at a pitch.

Next, the finish cutting machine 5 attached to the finish cutting station 2B will be described mainly with reference to FIGS. FIG. 6 is a plan view showing details of the finish cutting machine 5, and FIG. 7 is a side view thereof. It is mounted on a first base 52 on a base 51. 1st base
The table 52 is reciprocally movable on the base 51 in a direction orthogonal to the rotation shaft 41a (see FIG. 1). The first base 52 is mounted so as to be reciprocally movable in a direction orthogonal to the reciprocating operation of the first base 52. Second base 53
Is connected to a third base 54 via a second base 53b, and the third base 54 rotates around the second base 53b. 56 is a member for regulating the reciprocating operation. A motor 55 for reciprocating the first base 52 is mounted on the base 51. A pulley 55a is rotatably attached to the motor 55. The base 51 and the box 22 are fixed and placed on the box 22 (see FIG. 4).

A ball screw 55d is rotatably mounted on the base 51, and a pulley 55b is mounted on the ball screw 55d.
Is attached. A belt 55c is stretched between the pulley 55b and the pulley 55a. A cylinder 57 for reciprocating the second base 53 is mounted on the first base 52. The second base 53 has a third base.
One cylinder 58 for rotating the base 54 around the second base 53b is attached. Third base 5
4, a rotary grinder 54a is attached. The rotary grinder 54a is used for the chuck 5
4c is rotated. The chuck 54c has a rotary blade 54b
Is detachably attached. The molded product L is finish-cut by the rotary blade 54b. With the above configuration, the rotary blade 54b can move in a plane with respect to the box 22 and the rotary blade 54b can be tilted with respect to the upper surface of the box 22 to perform finish cutting.

Next, the deburring machine 6 attached to the deburring stage 2C will be described mainly with reference to FIG. FIG. 8 is a plan view showing details of the deburring machine 6. The basic configuration is the same as FIG. On the base 61,
It is placed on a first base 62. The first base 62 is reciprocally mounted on the base 61 in a direction orthogonal to the rotation shaft 41a (see FIG. 1). On the first base 62,
It is mounted so as to be reciprocally movable in a direction orthogonal to the reciprocating operation of the first base 62. A third base 64 is connected to the second base 63 so as to rotate. A cylinder 65 for reciprocating the first base 62 is mounted on the base 61. In the first base 62,
Cylinder 67 for reciprocating the second base 63
Is placed. 66 is a member for regulating the reciprocating operation. A cylinder 68 for rotating the third base 64 is attached to the second base 63. A pulley 64a is rotatably attached to the third base 64. A pulley 64 is provided on the third base 64.
c is rotatably mounted, and a belt 64d is stretched between the pulley 64a and the pulley 64c. The deburring machine 6 is mounted on the box 22 (see FIG. 1) with the base 61 and the box 22 fixed.

A drive source (not shown) is connected to the pulley 64c. When the drive source rotates, the pulley 64a
Is designed to rotate. And pulley 64a
A rotating buff shown in FIG. Deburring of the molded product L is performed by polishing the rotating buff. According to the above configuration, the rotating buff can move in a plane with respect to the box 22 and can be tilted with respect to the upper surface of the box, so that deburring can be performed. Similar to the finish cutting machine 5, the deburring machine 6 is also provided with a static eliminator 18 by corona discharge for removing static electricity generated at the time of deburring. For this reason, there is no problem that the cake is attached to the product due to static electricity.

Next, the finish cutting method in the finish cutting station 2B will be described mainly with reference to FIG.
State. FIG. 16 is a plan view showing the finish cutting method. Two molded products L1 and L2 are set on the molded product installation member 42. The respective gate cut portions Lg1 and Lg2 of L1 and L2 are directed in opposite directions. The rotary blade 54b is rotating clockwise. First, the rotary blade 54b is used to set the molded product installation member 4 to finish-cut Lg1.
2, the vehicle travels from the outside toward the U-shaped notch, and cuts the gate cut portion Lg1. The fact that the rotation direction and the traveling direction of the rotary blade 54b in the gate cut portion Lg1 are the same direction is called upper cut. The opposite is called downcut. Thereafter, when the cutting is completed, the rotary blade 54b moves to the molded product L2 side, and travels again to the outside of the molded product installation member 42. At that time, the molded product L
The second gate cut portion Lg2 is cut. At this time, the gate cut portion Lg2 is also similar to the gate cut portion Lg1,
Upper cut has been done. As described above, the rotary blade 5
Since the U-shaped reciprocating travel of 4b is performed, the travel time is not wasted, and the gate cut portions Lg1 and Lg2 can be finish-cut under the same conditions.

Next, a deburring method in the deburring stage 2C will be described mainly with reference to FIG.
FIG. 17 is a plan view showing a deburring method. Two molded products L1 and L2 are set on the molded product installation member 42. L1, L2 of the respective gate cut portions Lg1,
Lg2 is oriented in the opposite direction. Rotating buff 64
b rotates counterclockwise. First, the rotary buff 64b travels from the outside of the molded article installation member 42 toward the U-shaped notch to deburr Lg2, and deburrs the gate cut Lg2. Thereafter, when the deburring is completed, the rotary buff 64b moves to the molded product L1 side, and travels again toward the outside of the molded product installation member 42. At that time,
The gate cut portion Lg1 of the molded product L1 is deburred.
At this time, the gate cut portion Lg1 is also connected to the gate cut portion Lg.
Upper cut is made as in 2. As described above, since the U-shaped reciprocating traveling of the rotary buff 64b is performed, the traveling time is not wasted, and the gate cut portions Lg1 and Lg2 can be deburred under the same conditions.

As shown in FIGS. 16 and 17 described above, the finishing cutting station 2B and the deburring station 2C
The gate cut portions Lg1 (or burrs Lgv1) and Lg2 (or burrs Lgv2) of the molded products L1 and L2 are arranged side by side so as to face each other.
The rotary blade 54b and the buff 64b of the tool that performs the gate cutting process reciprocate along different paths. Therefore, there is no waste in the movement of the rotary blade 54b and the buff 64b, and the molded product L1,
The gate cut section processing of L2 is performed at once. The cycle time of the gate cut processing is reduced. The moving range of the rotary blade 54b and the buff 64b also saves space. Molded product L
The arrangement of 1 and L2 also saves space. The moving direction of the rotary blade 54b in the finishing cutting station 2B is opposite to the moving direction of the buff 64b in the deburring station 2C. Therefore, the burrs Lgv and Lgv2 formed in the finishing cutting station 2B are efficiently and reliably eliminated in the deburring station 2B.

Next, the pressing device 15 will be described mainly with reference to FIGS. FIG. 10 shows the pressing device 1.
FIG. 11 is a side view showing details of FIG. 5, and FIG. 11 is a front view thereof. The pressing device 15 is mounted on the finishing cutting station 2B on the box 22 (see FIG. 1). Pressing device 15
Is composed of a pressing member 152, a pusher 153 for moving the pressing member 152, a frame 154 for fixing the pusher 153, and an L-shaped member 156 for fixing the frame 154 on the box 22. On the bottom of the pressing member 152, there is provided a projection 151 which is inserted into the positioning hole 43 of the above-mentioned molded article installation member 42 and performs positioning. The pressing member 152 is moved up and down by driving the pusher 153, and the molded product placed in the molded product installation hole 44 is fixed so as not to move at the time of finish cutting, or is released.

The deburring stage 2C on the box 22 also has
A pressing device 16, which is the same device as the pressing device 15, is placed (see FIG. 1). The molded product placed in the molded product installation hole 44 is fixed so as not to move during deburring, or is released.

Next, the dust collecting means will be described mainly with reference to FIGS. A dust collecting hole member 21 is provided at the finishing cutting station 2B on the box body 22 and a deburring stage 2C.
Each portion is provided with a dust collection hole member 21a.
A dust collector 17 that collects dust generated by cutting and deburring is housed in the box 22. The dust collecting device 17 is connected to a pipe 17a that is a suction path for dust generated during cutting. A pipe 17b and a pipe 17c, which are suction paths, are connected to the pipe 17a. In the portion of the finishing cutting station 2B on the box 22, a dust collecting hole member 2 serving as a dust suction hole is provided.
1 is attached. The dust collection hole member 21 is provided in the pipe 1.
7b. A dust collecting hole member 21a is attached to the deburring stage 2C on the box 22, and the dust collecting hole member 21A is connected to the pipe 17c.

Next, the static electricity removing means will be described. The static electricity removing device 18 by corona discharge for removing static electricity generated at the time of finish cutting is attached to the finish cutting machine 5 of the finish cutting stage 2B (FIGS. 6 and 7).
reference). The static eliminator 18a by corona discharge for removing static electricity generated in deburring is attached to the deburring machine 6 of the deburring stage 2C (see FIG. 8). Therefore, there is no problem that chips scattered by static electricity adhere to the product.

Next, the configuration of the product stocker device 3 will be described mainly with reference to FIGS. The product stocker device 3 positions the pallet P, and a position indexing station 10 for determining the position of a gate cut portion, which will be described later, a transporter 9 for transporting the molded product L between the stacked pallets P and the position indexing station 10. Pallet positioning devices 7 and 12, a handling arm 8 for transporting the pallets P to the positioning position and unstacking the pallets P, a conveyor 11 for transporting the stacked pallets P, and operation and apparatus 3 of the entire system And a main operation panel 13 for performing the above operation. A caster 39 is attached to the bottom surface of the frame 30 so that the product stocker device 3 on the floor surface 20 can be moved or fixed.
The product stocker device 3 stocks the molded products L on the stacked pallets P (see FIG. 18).

Next, the first pallet positioning device 7, the handling arm 8, and the second pallet positioning device 12 will be described mainly with reference to FIG. 13, FIG. 14 and FIG. FIG. 13 is a partially cutaway side view showing details of the first pallet positioning device 7, the handling arm 8, and the second pallet positioning device 12. FIG. 14 is a front view showing details of the handling arm 8. A plan view of the first pallet positioning device 7, the handling arm 8, and the second pallet positioning device 12 is shown in FIG. The first pallet positioning device 7 and the second pallet positioning device 12
They are provided at opposite positions at the same height.

First, the handling arm 8 will be described mainly with reference to FIG. 13, FIG. 14 and FIG. The handling arm 8 includes a holding member 82 for holding the pallet P, and an arm 81 to which the holding member 82 is attached.
And a driving device 85 for moving the gripping member 82 facing and moving away, a rail 86 for supporting and horizontally moving the arm 81, an electromagnet 88 serving as a stopper for the arm 81, supporting the rail 86, and And a support rod 84 for movement. A rail member 86 is provided on the column 84 so as to be able to move up and down. The handling arm 8 is movable along the rail member 86. The handling arm 8 unloads the stacked pallets (P position) and stacks again (Pb position) (FIG. 2,
(See FIG. 3). The drive source for moving the rail 86 up and down is the motor 83 shown in FIG. It is the transfer device 9 that horizontally moves the arm 81 along the rail member 86. The electromagnet 88 holding the handling arm 8
The rail member 86 is provided at both ends. Therefore, the handling arm 8 is held and positioned at the time of stacking, separating the pallets, removing the molded product, and the like. Because it is an electromagnet, it can be easily and reliably held and opened simply by turning on and off the power. Furthermore, control is easy.

When the arm 81 is at the predetermined position, the hole 89 provided on the arm 81 is engaged with the pin 94 provided on the transfer device 9, and the transfer device 9 moves the arm 81. The drive source of the transfer device 9 for moving the molded product is used as the drive source of the arm 81 and is shared, thereby saving space and labor. There is no drive source for the direction of the handling arm 8 along the rail. The arm 81 is attached to a rail 86 via a hinge pin 87. Therefore, the arm 81
Even if the pallet is caught on the pallets P stacked when it moves in the descending direction, it rotates around the hinge pin 87 like the arm 81a shown by the dotted line in FIG. 13, so that it is possible to prevent the arm 81 from being broken. Can be. It is a mechanism for preventing the handling arm 8 from being damaged. When the handling arm 8 is lowered, the problem that the handling arm 8 is caught on the stacked pallets P and the handling arm 8 is damaged is prevented. The handling arm 8 is moved from the position of the conveyor 11 to the first pallet positioning device 7 and the second pallet positioning device 12.
Can be reciprocated up to the position 8b beyond the position.

Next, the first pallet positioning device 7 will be described mainly with reference to FIG. 13, FIG. 14 and FIG. In FIG. 13, the first pallet positioning device 7 includes:
It mainly comprises an arm 71 and an arm 72 attached to the frame 30 so as to rotate by 90 °, and a motor 77 for rotating the arm 71 and the arm 72. The pulley 71 is attached to the axis of the arm 71 and the arm 72 shown in FIG.
a, 72b are attached. Pulleys 71a, 7
A belt 74 is attached to 2b. Motor 77
, The arm 71 rotates 90 °. 71 is 90
ア ー ム The arm 72 rotates in synchronization with the rotation. A projection 70 for positioning the pallet is provided on the upper end side of the arm 71. The protrusion 70 is inserted into the hole Pc of the pallet P for positioning. The arm 72 is provided with a receiving portion 73 for supporting the pallet P.
The arm 71 and the arm 72 project toward the second pallet positioning device 12 carried by the handling arm 8, and receive and position the pallet. However, when the handling arm 8 moves, the arm 71 and the arm 72 do not hinder the movement of the handling arm 8.
Rotates in a direction parallel to the second pallet positioning device 12 so as not to hinder the movement of the handling arm 8.

Next, the second pallet positioning device 12 shown in FIG.
3, FIG. 14 and FIG. 3 will be mainly described. The second pallet positioning device 12 includes an L-shaped member 122 that supports the pallet P, a mounting member 121 that supports the L-shaped member 122, and an L-shaped member 122 and the mounting member 121 that protrude toward the first pallet positioning device 7. Move backward. The tip of the L-shaped member 122 has a hole Pc of the pallet P
A projection 120 is provided for insertion and positioning.

As described above, the pallet P is supported by the arms 71 and 72 of the first pallet positioning device 7 and the projection 120 of the second pallet positioning device 12, and is located in the diagonal direction of the pallet. Protrusion 70
And 120 are positioned.

Next, the details of the gate cut section indexing station 10 will be described. FIG. 15 and FIG. 16 are plan views showing details of the gate cut section position indexing station 10. FIG. Molded product L transferred from pallet P
Is placed between the centering members 103 (gate positioning portions 101) indicated by solid lines facing each other. The centering members 103 each have a U-shaped recess. When L is placed, the opposing centering members 103 move toward each other, and grip the molded product L by the centering member 103 indicated by a two-dot chain line. Then, the center is positioned. At this time, it is not known where the gate cut portion Lg is located.
Then, the molded product L is held by suction means provided below the lens (not shown). And the centering member 103
Is moved back to its original position. The molded product L is rotated counterclockwise in the figure by means not shown. In order to eliminate errors due to gear backlash and the like, the molded product is rotated only in one direction. At the top of the drawing of the molded product L, the sensor 105
Is provided. The sensor 105 detects the end of the gate cut portion using a laser beam or the like. Then, the position of the gate cut portion Lg of the molded product L is determined, and the gate cut portion Lg is directed in a predetermined direction. In order to determine the position of the gate cut portion Lg, the following two gate cut position determining methods are used.

The first method of determining the position of the gate cut portion is a method of detecting both ends of the gate cut portion Lg of the molded product L and calculating the center position of the gate cut portion Lg. FIG. 15 is a plan view showing the first method. Both ends of the gate cut portion Lg are detected by the counterclockwise rotation of the molded product L whose center of rotation O and the center position O are aligned and the sensor 105, and each end of both ends of the gate cut portion Lg detected with the rotational axis O of the molded product. The angle θ is calculated from the line segment formed with the part. The angle θ / 2 is calculated from the calculated angle θ, and the position of the center line of the gate cut portion Lg is determined. Then, the rotation of the molded product L is stopped at a position where the center line of the angle θ / 2 is the gate cut portion position Lgs in the predetermined direction, and the gate cut portion is set in the predetermined direction.

The second method of determining the position of the gate cut portion is a method of detecting one end of the gate cut portion Lg of the molded product L and calculating the center position of the gate cut portion Lg. FIG. 16 is a plan view showing the second method. The sizes of some gate cut portions are measured in advance, and the average angle θ is calculated. One end of the gate cut portion Lg is detected by the counterclockwise rotation of the molded product L in which the rotation axis and the center position O are aligned and the sensor 105. An angle θ / 2 is calculated from the average angle θ and a line segment formed by the rotational axis O of the molded product and the one end of the gate cut portion Lg detected, and the center line of the gate cut portion Lg is calculated. Is determined. Then, the rotation of the molded product L is stopped at a position where the center line of the angle θ / 2 is the gate cut portion position Lgs in the predetermined direction, and the gate cut portion is set in the predetermined direction.

As described above, by determining the position of the gate cut portion, the position of the gate cut portion of the molded product can be accurately determined, and the processing accuracy of finish cutting and deburring can be improved. As a result, quality can be improved. According to the first gate cut portion position determining method, the center position of the gate cut portion Lg can be calculated more accurately, and the gate cut portion processing with high processing accuracy of finish cutting and deburring can be performed. The gate cut portion Lg is determined by the second gate cut portion position determining method.
Can be quickly determined, and the cycle time of the gate cut processing can be reduced.

The transport device 19 will be described. FIG.
FIG. 2 is a front view showing details of a transport device 19; Transfer device 19
Transports by sucking the molded product L. The transport device 19
Molded article suction section 192 and molded article suction section 1 for sucking molded articles
93, a moving device 191 for vertically moving or horizontally moving the molded article suction section 192 and the molded article suction section 193, and a moving apparatus 1
It mainly comprises a rail 194 on which the 91 moves horizontally, and a frame 195 and a frame 196 connecting the rail 194 to the box 22 of the gate cut section processing device 2. The finished product whose gate portion has been positioned by the gate positioning portion 101 described below is conveyed to the molded product installation hole 44,
An operation of moving the processed molded product subjected to the gate cut portion finishing processing from the molded product installation hole 44 to the processed molded product receiving unit 102 is performed. The molded product L which is a CD lens product has a diameter of about 3
mm, which is difficult to grip. However, as described above, the gripping and releasing of the molded product during the reciprocating transport by the transport device 19 is performed by the suction by the molded product suction unit 192 and the molded product suction unit 193. Becomes easier. Further, since there is no operation of grasping the molded product, the molded product is not damaged.

Next, the operation of the entire gate cut section processing system 1 will be described. The operator arranges the gate-cut molded products on a pallet and stacks and places them on the end of the conveyor 11 (the pallet Pa shown by a two-dot chain line in FIGS. 2 and 3).
position. ). The pallet Pa is moved by the conveyor 11 in FIG.
It is conveyed to the position of the pallet P indicated by the solid line shown in FIG. The uppermost one of the pallets P is the handling arm 8
Lifted by The handling arm 8 includes the first pallet positioning device 7 and the second pallet positioning device 1
The pallet is lifted to a height above the second position. Arm 71 and arm 72 of first pallet positioning device 7 and L-shaped member 122 of second pallet positioning device 12
Move into each other.

Then, the pallet P is lowered by the handling arm 8 and placed thereon, and the pallet is positioned. The unprocessed molded product L placed on the pallet P is transported to the gate positioning unit 101 of the gate cut unit indexing station 10 by the molded product suction unit 93 of the transfer device 9. The gate portion of the molded product L transported to the gate positioning portion 101 is positioned as shown in FIG. Molded product L with positioning
Is transported by the molded article suction section 193 of the transport device 19 to the molded article installation hole 44 of the receiving / unloading station 2A.
At this time, the transfer device 19 sucks the molded product in the finished product installation hole 44 by the molded product suction unit 192 and stores the molded product in the molded product suction unit 193 in the molded product installation hole. Place on 44. The molded product accommodated in the molded product suction section 192 is placed on the processed molded product receiving section 102. The molded product placed on the receiving unit 102 is returned to the pallet P by the molded product suction unit 92 of the transporter 9. By the above two operations, the unprocessed molded product of the pallet P is received /
While being carried to the take-out station 2A, the processed molded product is returned to the pallet P.

The molded product placed on the receiving / unloading station 2A is subjected to finish cutting at the finish cutting station 2B as shown in FIG. 16, and deburring at the deburring stage 2C as shown in FIG. Is performed. Then, the finished molded product returns to the receiving / unloading station 2A again.

The pallet P positioned by the first pallet positioning device 7 and the second pallet positioning device 12
When all the finishing processes of the above molded article are completed, the pallet is again gripped by the handling arm 8. Then, the pallet held by the handling arm 8 is placed on the conveyor 11 at the position of the pallet Pb indicated by the two-dot chain line shown in FIGS. Pallets P of stacking solid lines shown in FIGS. 2 and 3
Are separated and all are stacked at the Pb position.
The conveyor 11 operates, the pallet at the Pb position returns to the Pa position again, and the gate cut section processing ends. The pallet at the Pa position is carried out by an operator.
As described above, the gate Lg0 shown in FIG. 20 is cut and separated from the runner portion Lr, and the gate cut section processing of the molded product L shown in FIG. 21 is automatically performed.

In the above-described embodiment, the case where the index table for circulating the molded product and feeding the pitch is a disk-shaped rotating member has been described. The same can be applied.

[0048]

As described above, according to the first aspect of the present invention,
The gate cut portion processing of the molded product cut from the gate and cut off from the runner portion is automatically performed. for that reason,
Workers no longer need to have skilled skills. The gate cut part of the gate cut molded product is surely
A highly accurate finishing process can be performed, and quality can be improved. Further, even if the worker does not have the skilled skills, the working efficiency can be increased, the productivity can be improved, and the cost can be reduced.

According to the second aspect of the present invention, since the molded article circulates and moves, the processing station for receiving the unprocessed molded article at the gate cut portion and the processing station for removing the processed molded article can be the same processing station. it can.
Therefore, by providing only one transfer device, the unprocessed molded product taken out of the product stocker device can be returned to the original position after processing, and waste time can be eliminated, and transfer efficiency can be improved. . Furthermore, space is saved. Further, since the gate cut section processing of a plurality of steps is performed by a flow operation, the processing efficiency is also improved.

According to the third aspect of the present invention, since the molded products are aligned on the pallet, the molded products can be easily moved between the product stocker device and the transport device, and waste is eliminated. In addition, when an operator supplies an unprocessed molded product to the product stocker device and unloads the processed molded product, a large number of molded products can be handled at a time, thereby improving work efficiency.

According to the invention of claim 4, the molded product is small,
Even if it is difficult to grip, the gripping and opening of the molded product during reciprocating transport in the transport device becomes easy. further,
Since there is no operation of grasping the molded product, the molded product is not damaged.

[Brief description of the drawings]

FIG. 1 is a plan view showing an entire gate cut section processing system according to an embodiment of the present invention.

FIG. 2 is a front view of a partial cross section of FIG.

FIG. 3 is a plan view showing a product stocker device.

FIG. 4 is a front view of a partial cross section of FIG. 3;

FIG. 5 is a front view of a partial cross section of the gate cut section processing apparatus.

FIG. 6 is a plan view showing a finish cutting machine.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a plan view showing a deburring machine.

FIG. 9 is a plane showing an index table.

FIG. 10 is a side view showing the pressing device.

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a front view showing a reciprocating transfer device.

FIG. 13 is a partial cross-sectional side view showing a handling arm unit.

FIG. 14 is a front view of FIG.

FIG. 15 is a plan view showing details of a gate cut portion positioning device.

FIG. 16 is a plan view showing details of finish cutting.

FIG. 17 is a plan view showing details of deburring.

FIG. 18 is a plan view showing a pallet.

FIG. 19 is a side view of FIG. 18;

FIG. 20 is a plan view showing a molded product in an injection molded state.

FIG. 21 is a plan view showing a molded product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gate cut part processing system 2 Gate cut part processing apparatus 2A Receiving / unloading station 2B Finish cutting station 2C Deburring station 2D Preparatory station 3 Product stocker device 4 Index table (rotating member) 5 Finish cutting machine (Processing machine) 6 Deburring machine (processing machine) 7 First pallet positioning device 8 Handling arm 9 Carrier 10 Gate cut portion positioning device 11 Conveyor 12 Second pallet positioning device 15 Pressing device 16 Pressing device 17 Dust collecting device 18 Static electricity removing device 19 Transporting device 54b Rotary blade (tool) 64b Buff (tool) 87 Hinge 88 Electromagnet 103 Gripping member 105 Sensor L Molded product Lg Gate cut part Lr Runner part P Pallet

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Ryosuke Masuo, inventor 37, Yuge, Ryuocho, Gamo County, Shiga Prefecture Ryuo Murata Co., Ltd.

Claims (4)

[Claims] 1. A gate cut section processing apparatus for processing a gate cut section of a molded product separated from a runner portion by cutting a gate, a product stocker apparatus for stocking the molded product, and the gate cut section processing apparatus. A transport device for reciprocatingly transporting the molded product to and from the product stocker device. 2. The gate cut section processing system according to claim 1, wherein the gate cut section processing apparatus includes a plurality of processing stations, and the molded product circulates through the plurality of processing stations. 3. The gate cut section processing system according to claim 1, wherein the product stocker device arranges and stocks the molded products on a stacked pallet. 4. The gate cut section processing system according to claim 1, wherein the transfer device picks up and transfers the molded product.