JP6661133B2 - Blow molding equipment - Google Patents

Description

  The present invention relates to a blow molding apparatus, and more particularly to a blow molding apparatus having a new transport mechanism for transporting a preform before blow molding and a molded product after blow molding.

  The blow molding apparatus performs blow molding or stretch blow molding on a bottomed cylindrical preform (injection molded product) made of a thermoplastic resin such as PET, except for the mouth, to blow mold a bottle-shaped container. Manufacture goods. For example, a blow molding apparatus includes a supply section to which a preform is supplied, a heating section of the preform, a blow molding die for performing biaxial stretch blow molding on the heated preform, and a blow molding of the obtained bottle shape. A collection unit for collecting the molded containers and a transport mechanism for transporting the preforms and the blow molded containers via these units are provided. In a blow molding apparatus such as a beverage bottle, for example, a preform is blown to a predetermined size, and the obtained primary blow-molded container is heat-shrinked and then double-blown to blow again. Manufactures molded bottles.

  In such a blow molding apparatus, the mouth of the preform or the blow molded container is mounted on a transfer tool such as a mandrel in an upright posture or an inverted posture, and in this state, the transfer tool is fixed by a belt or a chain. Along the transport route of In addition, using a transfer arm that can move linearly in the transfer direction and a direction perpendicular to the transfer direction, or a revolving transfer arm that can turn around a horizontal axis or a vertical axis, transfer the preform from the transfer path for heating to blow molding. Transferred to roads. Blow molding apparatuses having such a transport mechanism are described in Patent Documents 1 and 2.

JP 2012-229114 A JP 2008-302707 A

  In the blow molding apparatus, the preform supply position, the transfer position for transferring the heated preform from the heating section to the blow molding transfer path, the blow molding position in each blow mold, and the like are fixed positions. is there. The moving path of a transfer tool or a transfer arm for transferring a preform or the like via these positions is also constant. In the case of manufacturing blow-molded products of different sizes, for example, if the height position of the mouth is changed, the height position of the transfer path of the transfer tool, the transfer path / feed pitch of the transfer arm, etc. Need to be changed. Further, even when another processing unit is added to the transport path, a significant change in the transport path is required.

  An object of the present invention is to provide a blow molding apparatus provided with a transport mechanism that can easily change the transport path and the like.

In order to solve the above problems, the blow molding device of the present invention is:
A first robot that removes the preform from the heated preform removal position and sends the preform to the blow molding position;
A second robot that takes out the blow molded product from the blow molding position and sends the blow molded product to the molded product collection position;
Blow molding on the preform at the blow molding position to form a blow molded product,
Has,
Each of the first and second robots is a horizontal articulated robot,
The horizontal articulated robot
A first horizontal pivot arm pivoting about a first vertical axis;
A second horizontal pivot arm mounted on the first horizontal pivot arm and pivoting about a second vertical axis;
An elevating shaft attached to the second horizontal swing arm and capable of elevating vertically,
A gripper that is attached to the elevating shaft and opens and closes in the horizontal direction to grip a portion of the preform or the blow molded product where the blow molding is not performed, and
It is characterized by having.

Applying the present invention, a blow molding apparatus that performs double blow to produce a heat-resistant bottle and the like,
A first robot that removes a preform from a heated preform removal position and feeds the preform to a primary blow molding position;
A second robot that takes out the primary blow molded product from the primary blow molded position and feeds the primary blow molded product to the secondary blow molded position;
A third robot that takes out the secondary blow molded product from the secondary blow molded position and sends the secondary blow molded product to the molded product collection position;
Performing a primary blow molding on a preform at a primary blow molding position, and a primary blow molding die for molding a primary blow molded product;
At the secondary blow molding position, a secondary blow molding is performed on the primary blow molded product to form a secondary blow molded product,
Has,
Each of the first, second and third robots is a horizontal articulated robot,
The horizontal articulated robot
A first horizontal pivot arm pivoting about a first vertical axis;
A second horizontal pivot arm mounted on the first horizontal pivot arm and pivoting about a second vertical axis;
An elevating shaft attached to the second horizontal swing arm and capable of elevating vertically,
A gripper that is attached to an elevating shaft and opens and closes in a horizontal direction, in order to grip a preform, a primary blow molded product or a portion of a mouth portion not subjected to primary or secondary blow molding in a secondary blow molded product,
It is characterized by having.

  The preform (parison) is delivered between adjacent positions by the horizontal articulated robots arranged between the positions. An adjacent position may be within a range in which the gripper of the horizontal articulated robot can move. The conveying path of the gripper between adjacent positions, that is, the moving path of the preform or the blow molded product, is not uniquely fixed or restricted. It is possible to easily cope with a change in the distance between adjacent positions, a change in the height position, or the like due to a step change without changing the hardware. That is, each of the horizontal articulated robots can be used as it is, and the moving path of the grippers may be changed by the teaching operation.

  In the blow molding apparatus according to the present invention, the heated preform removal position, and the primary blow molding position and the secondary blow molding position can be arranged on the same straight line at predetermined intervals. In this case, each of the primary blow molding die and the secondary blow molding die is opened and closed on the other side in the orthogonal direction, with the vertical opening and closing center line located on one side in the orthogonal direction orthogonal to the straight line as the center. It is desirable that Also, each of the first, second and third robots may be configured such that the first vertical axis of the first horizontal swing arm is located on the straight line, and the gripper moves on the opening and closing side with respect to the straight line. It is desirable that they are arranged.

  This is convenient because the mold changing operation of each blow mold can be performed from the same side. If the positions are arranged at the same interval, robots of the same standard can be used as the robots, and the moving paths of the grippers can be the same. Therefore, the system configuration becomes easy.

  In the blow molding apparatus of the present invention, a preform or a blow molded product is conveyed between positions using a horizontal articulated robot. The movement route between the respective positions can be set arbitrarily within a predetermined range, and the transfer can be temporarily stopped at an arbitrary position during the movement. Therefore, it is possible to temporarily stop the conveyance during the conveyance, determine the quality of the preform or the blow molded product, and eliminate the defective product. Alternatively, the quality of a preform or a blow molded product passing at a predetermined conveyance speed is determined, and defective products can be eliminated. That is, a first defective product discharging unit that discharges the defective product if the preform is conveyed by the first robot and determines the quality of the primary blow molded product conveyed by the second robot. A second defective product discharge unit that discharges the defective product if the product is defective, and discharges the defective product if the quality of the secondary blow molded product conveyed by the third robot is defective. A third defective product discharging section can be arranged.

  In the blow molding apparatus of the present invention, the produced blow molded product can be easily packed in a box. In this case, a collection box for collecting the secondary blow-molded article sent out by the third robot is arranged, and the molded article collection position is set to a position in the collection box. By relatively moving the collection box and the molded article collection position by the third robot, the secondary blow molded articles can be collected in the collection box in an aligned state.

  Next, a heating unit for heating the preform to a temperature suitable for blow molding is arranged in the blow molding apparatus. In this case, a preform supply position where the preform before heating is supplied, a transport mechanism that transports the preform along a circulation path passing through the preform supply position and the heated preform removal position, and a circulation path. And a heating unit for heating the preform conveyed along.

  In this case, the transport mechanism includes a rotating disk that transports the preform along the circular circulation path, and a transport motor that rotates the rotary disk, and the heating unit moves from the preform supply position to the heated preform removal position. A plurality of heating units arranged at predetermined intervals in a portion of a circulation path between the heating units, and each of the heating units rotates a preform passing through a heating position of the heating unit around a central axis thereof. It is desirable to have.

  For example, the transport mechanism includes a rotating disk that transports the preform along a circular circulation path at a constant feed pitch, and a transport servomotor that intermittently rotates the rotary disk at predetermined intervals of the feed pitch. In the portion of the circulation path from the preform supply position to the heated preform removal position, a plurality of heating units arranged at the same interval as the feed pitch are provided, and each of the heating units is fed to the heating position of the heating unit. The preform is provided with a rotation servomotor for rotating the preform around its central axis. In this case, the preform is intermittently transported along the circulation path by the transport motor, and independently from this, the preform is rotated independently by the rotation motor in each heating unit. The speed of intermittent conveyance of the preform, the residence time of the preform in each heating unit, and the rotation speed in each heating unit can be freely set according to the shape, thickness, etc. of the preform to be heated. Therefore, the optimal heating state of the preform can be efficiently formed.

  In addition, an external heating unit such as a heater that heats the preform from the outside is disposed as the heating unit. In some cases, an internal heating unit for heating the preform from the inside to a predetermined temperature by inserting a heating element such as a bar heater through the mouth of the preform is arranged. In some cases, both the external heating unit and the internal heating unit are provided. In the case of an internal heating unit using a bar heater, for example, a bar heater is passed through a rotation axis for rotating the preform to a transport rotating plate that transports the preform along a circular circulation path. A mechanism is provided to insert the preform into the inside of the preform from above the turntable.

FIG. 1 is a front view, a right side view, a left side view, and a plan view showing an internal configuration of a blow molding apparatus using a double blow method according to a first embodiment of the present invention. FIG. 2 is an enlarged plan view illustrating an internal configuration of the blow molding device in FIG. 1. FIG. 2 is a plan view, a front view, a side view, and a plan view showing an example of a horizontal articulated robot of the blow molding apparatus of FIG. 1, and a gripper thereof. It is explanatory drawing which shows the blow molding apparatus by the double blow system which concerns on the modification of Embodiment 1 to which this invention is applied. It is an explanatory view showing a blow molding device by a single blow system according to a second embodiment of the present invention.

  Hereinafter, an embodiment of a blow molding device to which the present invention is applied will be described with reference to the drawings. Embodiment 1 described below applies the present invention to a double blow type blow molding apparatus for producing a heat resistant beverage bottle or the like, but the present invention relates to a double blow type blow molding apparatus. It is not limited. As shown in a second embodiment (FIG. 5) described later, the present invention can be similarly applied to a blow molding apparatus that performs one blow molding. Further, the present invention can be similarly applied to a blow molding apparatus that performs blow molding three or more times.

(Embodiment 1)
FIG. 1A is a front view showing a blow molding apparatus according to an embodiment, FIG. 1B is a right side view thereof, FIG. 1C is a left side view thereof, and FIG. d) is a plan view showing the internal structure. FIG. 2 is an enlarged plan view showing the internal structure of the blow molding device.

  Each component of the blow molding device 1 is arranged inside a horizontally long rectangular parallelepiped device housing 2. A supply rail 4 (chute) of a preform 3 which is a cylindrical injection molded product with a bottom is disposed at a portion on the right side of the front surface of the device housing 2 (FIGS. 1A and 1C). , The supply rail 4 is omitted.) The supply rail 4 is inclined downward toward the device housing 2. As shown in FIG. 3 described later, the preform 3 includes a bottomed cylindrical body 3a and a mouth 3b formed at the tip of the body 3a. An external thread is formed. The preform 3 is supplied from a supply source (not shown) to the supply rail 4 with the opening 3b suspended. The preform 3 slides down by its own weight along the supply rail 4 and is sent into the apparatus housing 2.

  Inside the apparatus housing 2, a heating station 10 for the preform 3 is disposed on the right side thereof. On the left side of the heating station 10, a blow station 20 of a double blow system is arranged. The front side of the blow station 20 is a defective product disposal station 50. The left side of the blow station 20 is a bottle collection station 60. A control panel 5 for driving and controlling each unit is disposed at a position on the left side of the front of the device housing 2. On the control panel 5, a display screen, various operation buttons, and the like are arranged. A blow molding operation or the like is performed according to a preset sequence.

  The heating station 10 includes a rotating disk 11 for transporting the preform, and a transport motor for rotating the rotating disk 11 about its center, for example, a servomotor 12. Preform transporters 13 are attached to the outer peripheral edge of the rotating disk 11 at predetermined angular intervals. In the illustrated example, preform conveyance tools 13 are arranged at eight locations at equal intervals. With the rotation of the rotating disk 11, the preform carrier 13 circulates along a circular circulation path 14 indicated by a dashed line. A portion on the front side of the device housing 2 in the circulation path 14 is a preform supply position 15 where the preform 3 is fed from the supply rail 4. At the preform supply position 15, the mouth 3 b of the preform 3 is delivered to the preform carrier 13 from the supply rail 4 side. The preform 3 is conveyed along the circulation path 14 in a state where the mouth 3b is suspended with the rotation of the rotating disk 11.

  In the circulation path 14, a position rotated 270 ° counterclockwise in the figure from the preform supply position 15 is a heated preform removal position 16. Heating units 17 are arranged at a plurality of positions, at five positions in this example, at equal angular intervals in a part of the circulation path between the preform supply position 15 and the heated preform removal position 16 in the circulation path 14. I have. Each heating unit 17 has the same configuration, and includes a heater extending in a tangential direction on the outer peripheral side of the circulation path 14. Further, a rotation motor, for example, a servo motor 18 for rotating the preform 3 sent to the heating position of each heating unit 17 is provided.

  The preform 3 heated to a temperature suitable for blow molding at the heating station 10 is delivered to the blow station 20 at a heated preform removal position 16. In the blow station 20, a primary blow mold 21 is arranged on the heating station 10 side, and a secondary blow mold 22 is arranged on the bottle collection station 60 side. At the primary blow molding position 23 of the primary blow mold 21, the primary blow molding is performed on the preform 3 to obtain a primary blow molded bottle 3 </ b> A which is a primary blow molded product. The primary blow molded bottle 3A is subjected to secondary blow molding at a secondary blow molding position 24 of a secondary blow mold 22 to obtain a secondary blow molded bottle 3B as a secondary blow molded product. In this example, the secondary blow-molded bottle 3B is the bottle of the final product.

  Between the heated preform removal position 16 and the primary blow molding position 23 by the primary blow molding die 21, a first robot 31 for transporting the preform is arranged. Between the primary blow molding position 23 of the primary blow molding die 21 and the secondary blow molding position 24 of the secondary blow molding die 22, the primary blow molding bottle 3A is moved from the primary blow molding position 23 to the secondary blow molding position 24. A second robot 32 for transporting the robot is provided. Further, between the secondary blow mold 22 and the bottle collection station 60, the secondary blow molded bottle 3B is moved from the secondary blow molding position 24 to the bottle collection position 62 of the bottle collection station 60 which is a molded product collection position. A third robot 33 for transport is provided. These first, second and third robots 31 to 33 are all horizontal articulated robots, and in this example, robots of the same standard are arranged.

  FIGS. 3A, 3B, and 3C are a plan view, a front view, and a side view showing a horizontal articulated robot used as the first to third robots 31 to 33, respectively. FIG. 4 is a plan view showing the gripper.

  The horizontal articulated robot 40 includes a gantry 41, and a gantry 41 has a first horizontal swing arm 43 mounted thereon so as to be swingable about a first vertical axis 42. A second horizontal swivel arm 45 is mounted on the distal end of the first horizontal swivel arm 43 so as to be swivelable about a second vertical axis 44. An elevating shaft 46 that can move up and down in the vertical direction is mounted on the distal end of the second horizontal turning arm 45. A gripper 47 that can be opened and closed in the horizontal direction is mounted on the lower end of an elevating shaft 46 that extends downward from the second horizontal swing arm 45. The gripper 47 can grip the opening 3b of the preform 3, the primary blow molded bottle 3A, or the final blow molded bottle 3B.

  Referring again to FIG. 2, the heated preform removal position 16, the primary blow molding position 23, and the secondary blow molding position 24 are located at the same interval on the straight line 6 indicated by the dashed line. The primary blow molding die 21 and the secondary blow molding die 22 each include a pair of left and right opening and closing dies. Each opening / closing type has its opening / closing center located on one side (back side in this example) in the direction orthogonal to the straight line 6 and its opening / closing side located on the other side (front side).

  In addition, each of the first, second and third robots 31 to 33 has an arrangement in which the first vertical axis 42 of the first horizontal turning arm 43 is located on the straight line 6 and the gripper 47 is opened and closed with respect to the straight line 6. It is arranged to move to the side. In this example, the first robot 31 (its first vertical axis 42) is located exactly halfway between the heated preform removal position 16 and the primary blow molding position 23. Similarly, the second robot 32 (its first vertical axis 42) is located exactly halfway between the primary blow molding position 23 and the secondary blow molding position 24.

  In the defective discarding station 50, defective discriminating units 51 to 53 are arranged at positions on the front side of the device housing 2 in the first to third robots 31 to 33, respectively. In each of the first to third robots 31 to 33, the preform 3 and the primary blow-molded bottle in which the first and second horizontal turning arms 43 and 45 are gripped by the gripper 47 in a state of linearly extending to the front side. 3A and the secondary blow molded bottle 3B are positioned at the discriminating positions of the defective discriminating units 51 to 53. The preform 3, the primary blow-molded bottle 3A, and the secondary blow-molded bottle 3B that have been determined to be defective by the defective product determination units 51 to 53 are released from being gripped by the gripper 47 and fall from the gripper 47, It is collected in the disposal box 54 of the defective product disposal station 50 located on the lower side.

  Next, a bottle collection box 61 is arranged in the bottle collection station 60. The bottle collection box 61 is arranged, for example, so as to be movable in the front-back direction or the left-right direction of the apparatus housing 2. The bottle collection position 62 of the secondary blow-molded bottle 3B by the third robot 33 can be set to a fixed position. In this case, the secondary blow-molded bottle 3B to be collected can be collected in the bottle collection box 61 in an aligned state by moving the bottle collection box 61 back and forth and left and right by, for example, a biaxial stage (not shown). Alternatively, as shown in the figure, when the movable range of the gripper 47 of the third robot 33 covers the entire width of the bottle collection box 61, the horizontal movement of the bottle collection box 61 and the movement of the bottle of the third robot 33 are performed. The secondary blow-molded bottle 3B can be collected in the bottle collection box 61 in an aligned state by synchronizing the movement of the collection position 62 in the front-rear direction.

  The bottle forming operation of the blow molding apparatus 1 having the above configuration will be described below. First, the preform 3 falls along the supply rail 4 while being suspended from the supply rail 4, and is sent to the preform supply position 15. The preform 3 sent to the preform supply position 15 is delivered to the preform carrier 13 of the rotating disk 11 waiting there. In this state, the rotating disk 11 is rotated by a fixed feed pitch (by a fixed angle) by the servo motor 12 for conveyance, and the preform 3 is positioned at the first heating position of the heating unit 17 along the circulation path 14. Is done. In the heating unit 17, the preform 3 is rotated (rotated) around its central axis by the rotation servomotor 18. The rotating preform 3 is heated by a heater from the outside. When the preform 3 is internally heated, a rod heater is inserted into the preform from the upper part of the rotating disk through the mouth of the rotating preform 3, and the preform 3 is heated from the inside to a predetermined temperature. After the preform 3 is similarly heated in each heating unit 17, the preform 3 is sent out to the heated preform removal position 16.

  The heated preform 3 is fed by the first robot 31 from the heated preform removal position 16 to the primary blow molding position 23 of the primary blow molding die 21 in the mold open state. The first robot 31 temporarily stops at the defective product discriminating section 51 during the conveyance, and the quality of the mouth 3b of the preform 3 and the like is determined. While the preform 3 conveyed by the first robot 31 passes through the discrimination position of the defective product discriminating unit 51 at a predetermined speed, the defective product discriminating unit 51 may determine whether the passing preform 3 is good or bad. . The preform determined to be defective by the defective product discriminating section 51 is collected in the disposal box 54 of the defective product disposal station 50.

  When the preform 3 is sent to the primary blow molding position 23, the primary blow molding die 21 is clamped, and the preform 3 is subjected to blow molding, for example, biaxial stretch blow molding. Thus, a primary blow-molded bottle 3A, which is a primary blow-molded product, is obtained from the preform 3. After the opening of the primary blow molding die 21, the second robot 32 feeds the primary blow molding bottle 3A from the primary blow molding position 23 to the secondary blow molding position 24 of the secondary blow molding die 22 in the opened state. The primary blow-molded bottle 3A shrinks due to heat radiation during transportation to increase the density and impart heat resistance. The second robot 32 temporarily stops at the defective product discriminating unit 52 during the conveyance, and the defective product discriminating unit 52 determines the quality of the primary blow molded bottle 3A. While the primary blow-molded bottle 3A conveyed by the second robot 32 passes the discrimination position of the defective discriminating unit 52 at a predetermined speed, the defective discriminating unit 52 determines whether or not the passing primary blow-molded bottle 3A is good. May go. The primary blow molded bottle 3 </ b> A determined to be defective is collected in a disposal box 54 of the defective product disposal station 50.

  The primary blow-molded bottle 3 </ b> A in a predetermined heat-shrinked state sent to the secondary blow-molding position 24 is subjected to secondary blow-molding by the closed secondary blow-molding die 22. Thereby, a secondary blow molded bottle 3B of a predetermined size, which is a secondary blow molded product, is obtained. After the secondary blow molding die 22 is opened, the secondary blow molding bottle 3B is sent out from the secondary blow molding position 24 to the bottle collecting position 62 by the third robot 33, and is packed in the bottle collecting box 61. Note that the third robot 33 temporarily stops at the defective product discriminating section 53 during the transportation, and the quality is judged. The pass / fail judgment may be performed while the secondary blow-molded bottle 3B passes through the discrimination position at a predetermined speed without temporarily stopping at the discrimination position by the defective product discrimination unit 53. The secondary blow-molded bottle 3B determined to be defective is collected in the waste box 54.

(Modification of First Embodiment)
FIG. 4 is an explanatory view showing a modified example of the blow molding apparatus 1 described above. The basic configuration of the blow molding apparatus 100 shown in this figure is the same as that of the blow molding apparatus 1 described above, and includes a heating station 110 for the preform 103, a blow station 120 of a double blow system, and a bottle collection station 160. I have. In this example, the preform 103 is heated while being intermittently transported two by two at the heating station 110. For this purpose, two preform conveying tools 113 are arranged at equal angular intervals along the outer peripheral edge of the rotary disk 111 for conveying the preform. In the blow station 120, two rows of blow molding lines are configured in a symmetrical manner in the front-rear direction.

  The two rows of blow molding lines are symmetrical in the front-rear direction. In the rear blow molding line, a first robot 131A for conveying the preform is arranged between one heated preform removal position 116A at the heating station 110 and the primary blow molding position 123A by the primary blow mold 121A. Have been. Between the primary blow molding position 123A of the primary blow molding die 121A and the secondary blow molding position 124A of the secondary blow molding die 122A, the primary blow molding bottle 103A1 is moved from the primary blow molding position 123A to the secondary blow molding position 124A. A second robot 132A for transporting the second robot is provided. A third robot for transporting the secondary blow molded bottle 103A2 from the secondary blow molding position 124A to the bottle collection position 162A of the bottle collection station 160 is provided between the secondary blow molding die 122A and the bottle collection station 160. 133A are arranged. These first, second and third robots 131A, 132A and 133A are all horizontal articulated robots.

  The front blow molding line has the same configuration, and a first robot 131B for conveying a preform is disposed between a heated preform removal position 116B and a primary blow molding position 123B by a primary blow molding die 121B. ing. Between the primary blow molding position 123B of the primary blow molding die 121B and the secondary blow molding position 124B of the secondary blow molding die 122B, the primary blow molding bottle 103B1 is moved from the primary blow molding position 123B to the secondary blow molding position 124B. A second robot 132B for transporting the robot is provided. Between the secondary blow molding die 122B and the bottle collection station 160, a third robot 133B for transferring the secondary blow molded bottle 103B2 from the secondary blow molding position 124B to the bottle collection position 162B of the bottle collection station 160 is provided. Are located. These first, second and third robots 131B, 132B and 133B are all horizontal articulated robots.

  In this manner, by heating the preforms two by two and supplying them to each of the two rows of blow molding lines to perform blow molding, the processing speed can be increased while minimizing the increase in installation space. There are advantages such as. The specific configuration of each unit is the same as that of the first embodiment, and a description thereof will be omitted.

(Embodiment 2)
FIG. 5 is an explanatory view showing an example of a blow molding apparatus by a single blow method to which the present invention is applied. The blow molding apparatus 200 of this example includes a heating station 210 for the preform 203, a blow molding station 220 of a single blow system, and a bottle collection station 260. Also, a first robot 231 that takes out the preform 203 heated to a temperature suitable for blow molding from the heated preform removal position 216 and sends it to the blow molding position 223, and a blow molded bottle obtained by blow molding the preform 203. A second robot 232 for taking out 203A from the blow molding position 223 and sending it to the bottle collecting position 262; The blow molding station 220 is provided with a blow mold 221 for performing blow molding on the preform 203 at a blow molding position 223 to form a blow molded bottle 203A. Each of the first and second robots 231 and 232 is a horizontal articulated robot, which is the same as in the first embodiment.

REFERENCE SIGNS LIST 1 blow molding apparatus 2 apparatus casing 3 preform 3A primary blow molded bottle 3B secondary blow molded bottle 3a body 3b mouth 4 supply rail 5 control panel 6 straight line 10 heating station 11 rotating disk 12 servo motor 13 preform carrier 14 Circulation path 15 Preform supply position 16 Heated preform removal position 17 Heating unit 18 Servo motor 20 Blow station 21 Primary blow molding die 22 Secondary blow molding die 23 Primary blow molding position 24 Secondary blow molding position 31 First robot 32 Second robot 33 Third robot 40 Horizontal articulated robot 41 Mount 42 First vertical axis 43 First horizontal swing arm 44 Second vertical axis 45 Second horizontal swing arm 46 Lifting shaft 47 Gripper 50 Defective product disposal station 51 Defective product discrimination Part 52 defective product discriminating part 5 Defective product discriminating unit 54 Waste box 60 Bottle collection station 61 Bottle collection box 62 Bottle collection position 100 Blow molding device 103 Preforms 103A1, 103B1 Primary blow molded bottles 103A2, 103B2 Secondary blow molded bottle 110 Heating station 111 Rotating disk 113 Preform Conveyors 116A, 116B Heated preform removal position 120 Blow stations 121A, 121B Primary blow molding dies 122A, 122B Secondary blow molding dies 123A, 123B Primary blow molding positions 124A, 124B Secondary blow molding positions 131A, 131B First robot 132A , 132B Second robot 133A, 133B Third robot 160 Bottle collection station 162A, 162B Bottle collection position 200 Blow molding apparatus 203 Renovation 203A blow molded bottle 210 heating station 216 heated preform take-out position 220 the blow station 221 blow mold 223 blow molding station 224 Bottle Recycling position 231 first robot 232 second robot 260 bottles recovery station 262 bottle collection position

Claims (8)

A heating station for heating the preform;
A blow molding station for blow molding the preform;
A collection station for collecting blow molded products,
A first robot that removes the heated preform from a heated preform removal position of the heating station, and sends the preform to a blow molding position of a blow mold in an open state at the blow molding station ;
A second robot that takes out the blow-molded product obtained by blow-molding the preform from the blow-molding position of the blow-molding die in an open state and sends the blow-molded product to a molded product collection position of the collection station ;
A control panel that drives and controls the heating station, the blow molding station, the collection station, and the first and second robots to perform a blow molding operation according to a preset sequence;
Has,
Each of the first and second robots is a horizontal articulated robot,
The horizontal articulated robot,
A first horizontal pivot arm pivoting about a first vertical axis;
A second horizontal pivot arm mounted on the first horizontal pivot arm and pivoting about a second vertical axis;
An elevating shaft mounted on the second horizontal swing arm and capable of elevating vertically;
A gripper that is mounted on the elevating shaft and opens and closes in the horizontal direction, in order to grip a portion of the mouth of the preform or the blow molded product where the blow molding is not performed,
Equipped with a,
A blow molding apparatus wherein a movement path of the preform and the blow molded product by each of the grippers of the first and second robots can be changed via the control panel . A heating station for heating the preform;
A blow molding station for blow molding the preform;
A collection station for collecting blow molded products ,
A first robot that removes the heated preform from a heated preform removal position of the heating station and feeds the preform to a primary blow molding position by a primary blow molding die in an open state at the blow molding station ;
A primary blow-molded product obtained by primary blow-molding the preform is taken out from the primary blow-molding position by the primary blow-molding mold in the mold open state, and the secondary blow molding in the mold-open state in the blow molding station is performed. A second robot that feeds the mold to a secondary blow molding position,
A secondary blow-molded product obtained by secondary blow-molding the primary blow-molded product is taken out from the secondary blow-molding position by the secondary blow-molding mold in an open state, and a molded product collection position of the collection station is taken out. A third robot to send to the
A control panel that drives and controls the heating station, the blow molding station, the collection station, and the first, second, and third robots to perform a blow molding operation according to a preset sequence;
Has,
Each of the first, second, and third robots is a horizontal articulated robot,
The horizontal articulated robot,
A first horizontal pivot arm pivoting about a first vertical axis;
A second horizontal swing arm mounted on the first horizontal swing arm and swinging about a second vertical axis;
An elevating shaft mounted on the second horizontal swing arm and capable of elevating vertically;
A gripper mounted on the elevating shaft and opened and closed in a horizontal direction in order to grip a portion of the preform, the primary blow molded product or the secondary blow molded product at the opening where the primary or secondary blow molding is not performed. When,
Equipped with a,
The moving path of the preform, the primary blow molded product, and the secondary blow molded product by each of the grippers of the first, second, and third robots can be changed via the control panel. Molding equipment. In claim 2,
The heating preform removal position, and the primary blow molding position and the secondary blow molding position are arranged at predetermined intervals along a straight line extending in the horizontal direction ,
Each of the primary blow mold and said secondary blow mold, around a vertical opening center line located on one side of the orthogonal direction orthogonal to the horizontal direction for the straight, other side of the perpendicular direction It is an opening and closing type that opens and closes,
In each of the first, second and third robots, the first vertical axis of the first horizontal swing arm is located on the straight line, and the gripper moves on the open / close side of the open / close type with respect to the straight line. Blow molding equipment is arranged so as to. In claim 3,
A first defective product discharging unit that determines quality of the preform conveyed by the first robot and discharges the defective product in the case of a defective product;
A second defective product discharging unit that determines the quality of the primary blow molded product conveyed by the second robot and discharges the defective product if the first blow molded product is defective; and
A blow molding apparatus in which at least one of a third defective product discharge unit that determines the quality of the secondary blow molded product conveyed by the third robot and discharges the defective product if the secondary blow molded product is defective is disposed. . In claim 3,
The collection station has a collection box for collecting the secondary blow-molded product sent out by the third robot,
The molded product collection position is a position in the collection box,
A blow molding device wherein the collection box is movably arranged. In claim 3,
The heating station comprises:
Preform supply position where the preform before heating is supplied,
A transport mechanism that transports the preform along a circulation path passing through the preform supply position and the heated preform removal position,
A heating unit that heats the preform conveyed along the circulation path,
Blow molding apparatus having In claim 6,
The transport mechanism includes a rotating disk that transports the preform along the circular circulation path, and a transport motor that rotates the rotating disk,
The heating unit includes a plurality of heating units arranged at predetermined intervals in a portion of the circulation path between the preform supply position and the heated preform removal position,
A blow molding apparatus, wherein each of the heating units includes a rotation motor that rotates the preform passing through a heating position of the heating unit around a central axis thereof. In claim 6 or 7,
The blow molding apparatus, wherein the heating unit includes one or both of an external heating unit that heats the preform from the outside and an internal heating unit that heats the preform from the inside.

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