JPH0561208B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a drive device in a bottle making machine for producing beer bottles, for example.

BACKGROUND TECHNOLOGY In general, a bottle making machine body has a plurality of forming sections, a feeder that makes gobs with a weight equivalent to the weight of one bottle, and a distributor that receives the gobs from the feeder and sequentially distributes them to the plurality of forming sections. A drive shaft that drives the molding member in the molding section, a pusher that pushes the product molded in the molding section out of the molding section, and a machine conveyor that receives the product extruded by the pusher and transports it to the lehr. Bottle making machines equipped with the following are known.

As a driving device for the above-mentioned bottle making machine, one is known that is equipped with five inverter motors for individually driving a feeder, a distributor, a drive shaft, a pusher, and a machine conveyor.

Problem to be Solved by the Invention In the above-mentioned bottle making machine, when making a setup change that requires changing the number of sections in order to change the type of bottle to be manufactured, each The rotational speed of the motor must be changed, which is accomplished by manually adjusting the frequency scale of each motor controller individually. Therefore, there was a problem that it took a long time to change the setup. Furthermore, the rotational fluctuations of the inverter motor due to load fluctuations were large, resulting in large variations in molding conditions.

An object of the present invention is to provide a drive device for a bottle making machine that solves the above problems.

Means for Solving the Problems A drive device according to the present invention includes a bottle making machine main body having a plurality of forming sections, a feeder forming a knob having a weight equivalent to the weight of one bottle;
A distributor that receives bumps from a feeder and sequentially distributes them to a plurality of molding sections, a drive shaft that drives a molding member in the molding section, a pusher that pushes the product molded in the molding section out of the molding section, and a pusher. A bottle making machine is equipped with a machine conveyor that receives the extruded product and transports it to an annealing furnace.The main servo motor for driving the feeder, distributor, drive shaft, pusher, and machine conveyor are each equipped with The first to fourth slave servo motors for individual driving, the main speed setter for setting the rotation speed of the main servo motor, and the rotation of the first to fourth slave servo motors relative to the rotation speed of the main servo motor. first to fourth ratio setters for respectively setting speed ratios, a main servo amplifier to control the main servo motor based on the output signal of the main speed setter, and first to fourth ratio setters.
A first motor for individually controlling the first to fourth slave servo motors based on the output signal of the ratio setter.
~4th slave servo amplifier.

Operation The drive device according to the present invention includes a main servo motor for driving the feeder, and first to third motors for individually driving the distributor, drive shaft, pusher, and machine conveyor.
Since a fourth slave servo motor is provided, the feeder is driven by the main servo motor, and the distributor, drive shaft, pusher and machine conveyor are each individually driven by the first to fourth slave servo motors.

Furthermore, the drive device includes a main speed setting device for setting the rotational speed of the main servo motor, and a main speed setting device for setting the ratio of the rotational speed of the first to fourth slave servo motors to the rotational speed of the main servomotor. Since the first to fourth ratio setters are provided, the rotational speed of the main servo motor is set to the main speed setter, and the first to fourth ratio setters are provided with the rotational speed of the main servo motor. The rotational speed ratios of the first to fourth slave servo motors are each set.

The drive device also includes a main servo amplifier that controls the main servo motor based on the output signal of the main speed setter, and a main servo amplifier that controls the main servo motor based on the output signal of the first to fourth ratio setters. Since the main servo motor is controlled by the main servo amplifier so that the rotation speed is set in the main speed setting device, the main servo motor is 1st for rotational speed
- The first to fourth slave servo motors are individually controlled by the first to fourth slave servo amplifiers so as to achieve the ratios respectively set in the fourth ratio setter.

Embodiments Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 2 and 3 show a schematic configuration of the entire bottle making machine.

The bottle making machine is well known, and the explanation will be kept brief, but it has a plurality of forming sections S1.
- Bottle making machine body 11 having S6, a feeder 12 that makes gobs G with a weight equivalent to the weight of one bottle, and a device that receives gobs G from the feeder 12 and sequentially distributes them to a plurality of forming sections S1 to S6. Triviewer 13 and molding section S1~
A drive shaft 14 that drives a molding member (not shown) in S6 and molding sections S1 to S6
The molded product W is transferred to molding sections S1 to S6.
The machine conveyor 16 receives the products W pushed out by the pusher 15, arranges them in a row, and conveys them. Further, a cross conveyor 18 is connected to the end of the conveyance path of the machine conveyor 16 via a transfer machine 17. An insertion machine 19 and a lehr 20 are arranged on both sides of the cross conveyor 18.

The feeder 12 is arranged above the bottle making machine main body 11 and includes a furnace 21 containing molten glass, and a furnace 21
The shear 22 cuts the molten glass hanging down from the outlet into gobs G into predetermined lengths. The shear 22 is driven by a main servo motor 30. The distributor 13 is arranged between the same number of chute 23 as the molding sections S1 to S6 extending upward from each molding section S1 to S6 to below the shear 22, and between the upper ends of the shear 22 and the chute 23, and is cut and dropped. It has a rotary disk 24 that receives the gob G and distributes it to each chute 23 in sequence. The rotary disk 24 is driven by a first slave servo motor 31 . A rotary drum 25 is fixed to the drive shaft 14, and the outer surface of the drum 25 is provided with protrusions 26 in the same number as the forming sections S1 to S6. On the other hand, molding sections S1 to S6
Although not shown, is equipped with a mold that is opened and closed by a fluid pressure cylinder, and by controlling ON/OFF of the fluid pressure cylinder by a protrusion, gob molding G is performed and product W is obtained. The drive shaft 14 is driven by a second slave servo motor 32. The pusher 15 is operated by a cam (not shown) provided on a camshaft 27 for each of the molding stations S1 to S6, and pushes the product W from the mold onto the machine conveyor 16. The camshaft 27 is
It is driven by a third servo motor 33. The product W carried to the end of the conveyance path of the machine conveyor 16 is
The transfer machine 17 arranges them at constant intervals and transfers them to the cross conveyor 18. The machine conveyor 16 is driven by a fourth slave servo motor 34, the transfer machine 17 is driven by a fifth slave servo motor 35, and the cross conveyor 18 is driven by a sixth slave servo motor 36.

As shown in FIGS. 4 and 5, the insertion machine 19 has a horizontal support shaft 41 arranged on the side of the cross conveyor 18, a sliding tube 42 fitted over the support shaft 41, and a sliding a pair of arms 43 extending from the cylinder 42 in the direction of the cross conveyor 18;
A stack bar 44 that is fixed at the ends of both arms 43, a ball screw 45 that is connected to a sliding cylinder 42 so that a nut 46 moves together in the direction of movement of the conveyor 18, and a threaded rod 47 of the ball screw 45 are connected to each other. It consists of a first sub-servo motor 37 to drive, a crank mechanism 48 to which a connecting rod 49 is connected to a support shaft 41, and a second sub-servo motor 38 to drive a crankshaft 50 of the crank mechanism 48.

By driving the threaded rod 47, the stack bar 44 moves in the X direction, which is parallel to the moving direction of the cross conveyor 18, and by driving the crankshaft 50, the stack bar 44 moves in the Y direction, which is perpendicular to the X direction. Moving. By moving the stack bar 44 in the Y direction while moving in the X direction at the same speed as the product transported by the cross conveyor 18, the product W on the cross conveyor 18 is pushed into the lehr 20 by the stack bar 44.

FIG. 1 shows the electrical configuration of a drive device for a bottle making machine.

In FIG. 1, a main servo motor 30, first to sixth slave servo motors 31 to 36, and a first sub servo motor 3
7 and a second sub-servo motor 38 are shown, respectively.

A main speed setting device 52 is connected to the sequencer 51. Main servo motor 30 and main servo amplifier 6
0 are connected in series, and this series circuit is connected to the sequencer 51. The first to sixth slave servo motors 31 to 36 include first to sixth slave servo amplifiers 6
1 to 66 and ratio setters 71 to 76 are connected in series, these series circuits are connected in parallel, and the parallel circuit is connected to main servo amplifier 60. First and second auxiliary servo motor 3
7, 38 are the first and second sub-servo amplifiers 6
7 and 68 are connected in series, and both of these series circuits are separately connected to the sequencer 51. The sequencer 51 also includes an auxiliary speed setting device 79.
is connected.

The rotation speed of the main servo motor 30 is set in the main speed setter 52 . According to instructions from the sequencer 51, the set value is input to the main servo amplifier 60,
The main servo motor 30 is controlled by the main servo amplifier 60 so that the set value is achieved. Main servo motor 30
The rotational speed of the feeder 12 determines the cutting cycle time by the shear 22 of the feeder 12, which in turn influences the weight based on the length of the gob G.

The rotation speed of the main servo motor 30 is controlled by the first to sixth ratio setters 71 to 76 through the main servo amplifier 60.
are respectively input to the first to sixth ratio setters 71.
to 76, the ratio of the rotation speed of the first to sixth slave servo motors 31 to 36 to the rotation speed of the main servo motor 30 is set. Although not explained in detail, the rotational speeds of the first to sixth slave servo motors 31 to 36 are set in advance based on the weight of the gob G and the shape of the bottle manufactured from the gob G.
Then, the first to sixth slave servo motors are controlled by the first to sixth slave servo amplifiers 61 to 66 so that the respective set values are achieved.

The rotational speeds of the first and second auxiliary servo motors 37 and 38 are set in the auxiliary speed setter 79, respectively. Based on instructions from the sequencer 51, the respective set values are set by the first and second sub-servo amplifiers 67 to 6.
8, and the first and second sub servo motors 37 and 38 are driven by the first and second sub servo amplifiers 67 to 68 so as to reach the set value. The rotational speeds of the first and second sub-servo motors 37, 38 are as follows:
As described above, the cross conveyor 18 and the stud cover 44 are set to be synchronized and to prevent bottles from falling over on the cross conveyor 18.

Effects of the Invention According to the present invention, the feeder is driven by the main servo motor, and the distributor, drive shaft, pusher, and machine conveyor are each individually driven by the first to fourth slave servo motors, so rotation fluctuations are prevented. As a result, variations in molding conditions can be reduced.

Furthermore, the rotation speed of the main servo motor is set in the main speed setter, and the ratio of the rotation speed of the first to fourth slave servo motors to the rotation speed of the main servo motor is set in the first to fourth ratio setters, respectively. The main servo motor is controlled by the main servo amplifier so that the rotation speed is set in the main speed setting device, and the rotation speed becomes the ratio set in the first to fourth ratio setting devices to the rotation speed of the main servo motor. The first to fourth slave servo motors are individually controlled by the first to fourth slave servo amplifiers, so when changing setups, all you have to do is set the rotational speed of the main servo motor to the main speed setting device. , the rotational speed of all servo motors can be changed, and setup changeover time can be shortened.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an electric circuit diagram of a drive device of a bottle making machine, FIG. 2 is a front view showing a schematic configuration of the entire bottle making machine, FIG. 3 is a plan view of the same, and FIG. FIG. 4 is a front view showing a schematic configuration of the insertion machine, and FIG. 5 is a plan view thereof. 11...Bottle making machine main body, 12...Feeder, 1
3...Distributor, 14...Drive shaft, 15...Pusher, 16...Machine conveyor, 20...Learning furnace, 30...Main servo motor, 31-34...Slave servo motor, 52...Main speed Setting device, 60...Main servo amplifier, 61-6
4... Slave servo amplifier, 71-74... Ratio setter, S1-S6... Molding section, G... Gob, W... Product.

Claims (1)

[Claims] 1. A bottle making machine main body 11 having a plurality of forming sections S1 to S6, a feeder 12 for making a gob G having a weight equivalent to the weight of one bottle, and a feeder 12 for making a gob G having a weight equivalent to the weight of one bottle; A distributor 13 that sequentially distributes to a plurality of molding sections S1 to S6; A drive shaft 14 that drives molding members in the molding sections S1 to S6; and Products W molded in the molding sections S1 to S6.
a pusher 15 that pushes out the product W from the forming sections S1 to S6; and a machine conveyor 16 that receives the product W extruded by the pusher 15 and conveys it to the lehr 20.
A bottle making machine comprising: a main servo motor 30 for driving the feeder 12; a distributor 13; and a drive shaft 1.
4. First to fourth slave servo motors 31 to 34 for individually driving the pusher 15 and machine conveyor 16, a main speed setting device 52 for setting the rotational speed of the main servo motor 30, and a main servo motor. 1st to 30 rotational speeds
The main servo motor 30 is controlled based on the output signal of the first to fourth ratio setters 71 to 74 for setting the rotational speed ratio of the fourth slave servo motors 31 to 34, respectively, and the main speed setter 52. Main servo amplifier for 6
0, and first to fourth slave servo amplifiers 61 to 64 for individually controlling the first to fourth slave servo motors 31 to 34 based on the output signals of the first to fourth ratio setters 71 to 74, respectively. A drive device consisting of: