JPH0655607B2 - Bagging and packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention provides a package in which a plurality of vacuum suction bars, one set of two, are provided at the periphery of a rotor at equal intervals, and the vacuum suction bars of these groups are supported. Transport the bag by rotating the rotor,
The present invention relates to a rotary bag filling and packaging apparatus that fills the inside of each packaging bag with a product and heat-seals the opening edge of each packaging bag.

(Prior Art) As shown in FIG. 8, a conventional packaging device of this type has a large number of vacuum suction bars each including two vacuum suction bars (101) and (102) around the rotor (100). Bars (101) (102) are provided at equal intervals, and each vacuum suction bar (10) is driven by the driving force of the shaft (103).
1) (102) ... is intermittently rotated together with the rotor (100) in the direction of the arrow (104), and the packaging bag (105) is fed between the two vacuum suction bars (101) (102) at point U. , Both vacuum suction bar (101)
Since (102) adsorbs and supports the packaging bag, and the packaging bag (105) is opened at the point V, the product is filled in the packaging bag here, the seasoning liquid is further replenished at the point W, and the packaging bag is packaged at the point X. After closing the opening edge of the bag and heat-sealing the opening edge of the packaging bag at point Y, shut off the vacuum suction force at point Z and at the same time use two vacuum suction bars (1
Bagged products are excluded between 01) and (102).

(Problems to be Solved by the Invention, etc.) By the way, at the point V, the worker generally performs the filling while measuring the weight of the object to be packaged. However, due to a slight trouble, the object to be packaged is occasionally packed in the packaging bag. May be filled. When the packaging bag not filled with the packaged object is released from the two vacuum suction bars at the Z point, the weight of the packaged object is not added to the packaging bag,
The empty packaging bag accumulates on the spot without being carried out from the place, and in this type of packaging device, the released packaging bag gets wet with water and is reused because it wraps the item to be packed with moisture. There were some drawbacks such as inconvenience.

In view of the above points, the present invention is to enable the packaging bag, which has not been filled with the article to be packaged, to be re-transported and reused by the rotor as it is without releasing it from the vacuum suction bar.

(Means for Solving the Problem) In view of the above points, the present invention arranges a large number of vacuum suction bars, one set of two, at equal intervals around the rotor, and arranges the vacuum suction bars of each set. The rotor and each vacuum suction bar are intermittently rotated integrally with each other at the same pitch as the spacing, and the two vacuum suction bars of each set are guided by a cam plate provided concentrically with the rotor. Open and close, open the space between the vacuum suction bars at the first stop position while the rotor makes one rotation, and supply the packaging bag with the vacuum cup between the opened vacuum suction bars to the vacuum suction lever. Adsorb and open the space between the vacuum suction bars greatly at the stop position at the rear, fill the packaging bag with the object to be packaged, and close the space between the vacuum suction bars at the stop position at the rear and use a pair of seal bars. Pinch the bag mouth In a bag-filling and packaging apparatus in which a heat-sealing is performed, and further, at a rear stop position, an opening / closing valve provided in a line connecting the vacuum suction bar to a vacuum source is closed to drop the packaging bag from the vacuum suction bar. , A switch that operates by filling the packaging bag with an object to be packaged is provided, and when the switch does not confirm the filling of the object to be packaged, a signal from the switch causes a vacuum suction force in the bag supply vacuum cup. And the power for moving the seal bar is cut, and the line connecting the vacuum suction bar and the vacuum source is held in an open state.

(Function) In the rotary bag filling and packaging apparatus, the switch provided at the position where the packaging bag is filled with the article to be packaged is checked when the packaging bag is not filled with the article to be packaged. To send a signal. And first, the cutting means of the power system that moves the seal bar to weld the bag mouth is moved,
Prevent the seal bar from welding the bag mouth. Next, the cutting means of the power system for operating the on-off valve provided in the line connecting the vacuum suction bar and the vacuum source for supporting the packaging bag by suction is locked so that the empty bag is vacuumed. Prevent it from falling off the suction bar. Furthermore, at the bag feeding position, the cutting means provided in the vacuum line connecting the bag feeding vacuum cup and the vacuum source is kept stationary so that the new packaging bag is attached to the vacuum suction bar supporting the empty bag. Prevent supply. As a result, the empty bag that has failed to be filled with the article to be packaged is given an opportunity to rotate once more to fill the article to be packaged.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In FIG. 1, six discs (1) (1) ... Are arranged vertically so as to form a hexagon. Six arms (3) (3) are radially protruded from the periphery of the circular rotor (2) shown by the dotted line in the center of the figure, and the above-mentioned boards are attached to the tips of these arms.
(1) ... is fixed. Since the above-mentioned six boards and the structure of the parts attached to each board and the positions of the parts are the same, only the relationship between one board and the parts will be described below.

As shown in Fig. 2, a cylindrical bearing (5) is fixed vertically on the upper surface of a table-shaped machine base (4), and a cylindrical main shaft (6) is also rotatably supported in this bearing. And the spindle
Fix the above-mentioned circular rotor (2) to the upper end of (6) like an umbrella,
The rotor through the thrust bearing (7)
It is supported on the upper surface of (5). Also, while fixing the six equally divided Geneva (8) to the lower end of the main shaft (6), the cam holder (10) provided on the driving shaft (9) is periodically rotated by the rotation of the prime mover to generate the Geneva.
The six discs (1) fixed to the peripheral edge of the rotor (2) are engaged with the rotor (8) and are intermittently rotated together with the rotor by one sixth of one revolution. Further, a reversing shaft (11) is rotatably arranged inside the cylindrical main shaft (6), and a groove cam plate (1) arranged on the circular rotor (2).
2) is connected to the central reversal shaft (11). And below the machine base (4), the drive shaft (9) and the chain
A cam (15) is provided on a driven shaft (14) that is continuously connected via (13), and the action of the cam (15) is applied to the reversing shaft (1) via a link mechanism (16).
I am trying to communicate to 1). As shown in FIG. 5, the details of the link mechanism (16) include a bell crank (18) that comes into contact with the cam (15) by the force of a spring (17), and a lever (19) fixed to a reversing shaft (11). Are connected via a connecting rod (20). By rotating the cam (15), the bell crank (18) swings the lever (19) by an angle of 60 degrees, and then the reaction force of the spring (17) reverses the reversing shaft (11) by an angle of 60 degrees. .
Therefore, the groove cam plate (12) connected to the reversing shaft (11) is
The rotor (2) and the rotor (2) rotate forward by 60 degrees,
While (2) is stopped, the grooved cam plate (12) reverses by 60 degrees and returns to its original position.

As shown in FIG. 1, a vacuum suction bar (22) on the fixed side that is long in the lateral direction is fixed to the front of each of the six boards (1), and faces the front side of the vacuum suction bar. A vacuum suction bar (23) on the movable side is arranged in the bar, and the other end of a rod (24) having a cylindrical cross section fixed at a right angle to one end of the bar is hermetically penetrated between the front and back surfaces of the board (1). A rod-shaped guide (27) fixed to the rear surface of the board (1) while protruding to the rear surface side of the board via the provided boss (25) and fixing the rotation restriction block (26) to the other end of the rod (24). And the cantilevered movable side vacuum suction bar (23) by setting a sliding relationship between the rotation restriction block (26) and the hole formed in the rotation restriction block (26).
Of the rotation restricting block (26) is rotatably supported on the lower surface of the rotation restricting block (26) by engaging with a cam groove (29) formed on the upper surface of the groove cam plate (12). The movable vacuum suction bar (23) comes into contact with and separates from the fixed vacuum suction bar (22) by the guiding action of the cam groove.

As shown in FIG. 3, the fixed vacuum suction bar (22) and the movable side vacuum suction bar (23) are both formed in a hollow shape so that a vacuum suction force is applied to the inside thereof, and their opposing surfaces are opposed to each other. Vacuum holes (31) and (32) are formed in the
A vacuum passage (3) formed in the boss (25) through a flexible tube (34) connected to one end of a hollow portion (33) in the (22).
5), on the other hand, the hollow part (3) in the movable vacuum suction bar (23).
6) is connected to the vacuum passage (35) in the boss through the inside of the cylindrical rod (24) at one end. In addition, a long hole (37) having a predetermined length is formed on the side surface of the cylindrical rod (24),
The vacuum is always applied to the hollow portion (36) even during the stroke of (24). The fixed side vacuum suction bar (22) is
It is not completely fixed with respect to (1), but is slightly displaced via cushion springs (38) (38). That is, a plurality of pins (39) (39) fixed to the back surface of the block (22) are slidably inserted into holes (41) (41) formed in a pedestal (40) fixed to the front surface of the board (1). Engage and fix the position of the block (22) with the heads (42) (42) of the pins and the spring between the block (22) and the pedestal (40).
(38) (38) is installed. On the other hand, a plurality of elastic members (43) are provided on the surface of the movable vacuum suction bar (23) facing the fixed vacuum suction bar (22).

As shown in FIG. 2, at the upper end of the reversing shaft (11), a hose (44) connected to a vacuum pump is connected to the upper end, and a joint (46) having six hose (45) ... Is rotatably provided. Insert the pin (47) provided at the lower end of the joint into the hole (48) at the upper end of the reversing shaft so that the joint (46) does not rotate even if the groove cam plate (12) rotates, as shown in FIG. Open / close valve with 6 hoses (45) on the back of the panel (1)
It is connected to the vacuum passage (35) in the boss (25) via (49). When the six boards (1) are rotated by the rotor (2), the hose (45) is pulled and the joint (46) rotates, but in this case, the hose (44) and the joint (46) The seams of slide.

As shown in Fig. 4, the on-off valve (4
In (9), a spring (53) is installed in a pilot chamber (52) at one end of a spool (51) provided in a valve block (50), and the normal hose (45) (45) is provided by the force of the spring (53). If the spool (51) is pushed up against the force of the spring (53) by opening the passages (55) (56) between them, the lower land (51a) will pass through the passage (56).
On the other hand, the upper land (51b) opens the pilot line (57), and the spool (51) is self-held with the passage (56) closed by the vacuum suction force acting on the pilot chamber (52). It is a structure that does.

In FIG. 1 as well, the six boards (1) ... rotate while intermittently stopping at six stop positions (A to F), but at points F and A as shown in FIG. Cylinders (61) and (62) are installed, and the first cylinder (61) at the F point pushes up the spool (51) via the rod (63) to close the passage (56), and the second cylinder at the A point. The hook member (64) provided at the tip of the piston rod of the cylinder (62) hooks the collar (65) provided on the lot to lower the spool (51) and open the passage (56).

In Fig. 1, a large number of packaging bags are placed at point (A) around the rotor.
(X) are placed in a stack, this state is shown in FIG. A pin (6
A lever (68) swinging about 45 degrees around 7) is provided, and a vacuum cup (69) provided at the tip of the lever (68) is connected to a vacuum pump (71) via a line (70). An electromagnetic on-off valve (72) that is connected to the line and is a cutting means for the line.
Is provided. The lever (68) is the rotor (2) shown in FIG.
Rotates once for one pitch, and at the same time, the opening / closing valve (72) also operates in response to the movement of the lever (68) by the action of the switch (74) by the cam (73). Therefore, the vacuum suction force acts on the vacuum cups (69) only when the vacuum cups (69) are lifted up, so that the topmost one of the stacked packaging bags (X) is adsorbed on the vacuum cups (69). Be lifted. In front of the vacuum cup (69), a holding claw that swings around a pin (75) is used.
(76) is provided, and the packing bag (X) lifted by the vacuum cup (69) is sandwiched by the holding claws (76), and a pair of vacuum suction bars (22) ( Supply during 23). At this time, the rotor (2) has just stopped, and the pair of vacuum suction blocks (22) and (23) hold the packaging bag (X) by the reversing action of the groove cam plate (12) at a 60-degree angle. At the same time, the second cylinder (62) in FIG. 4 pulls down the spool (51), so that a vacuum is applied in the passage (56) and the pair of vacuum suction levers (22) and (23) adsorb the packaging bag (X). To do.

Immediately after the pair of vacuum suction bars (22) (23) move from the point A to the point B, the groove cam plate (12) reverses the 60-degree angle to cause the pair of vacuum suction bars (22) (23) to move. The space is opened, and the opening edge of the packaging bag (X) is largely opened. Therefore, the food is filled in the packaging bag at point B.

Since the mouth of the packaging bag (X) is slightly open even when it moves from the point B to the point C, the seasoning liquid is filled in the packaging bag at this point.

When moving to point D, the space between the pair of vacuum suction bars (22) and (23) is completely closed, so that the opening edge of the packaging bag is also closed.

At point E, as shown in FIG. 7, a seal bar (78) is provided connected to the piston rod of the third air cylinder (79), and the third air cylinder (79) and the compressor (80) are provided. An electromagnetic switching valve (81) is provided as a cutting means in the power transmission system connecting with, and the micro switch (83) connected to the electromagnetic portion (82) of the electromagnetic switching valve is opposed to the cam (84). There is. The cam (84) makes one rotation while the rotor moves by one pitch, and acts on the switch (83) to actuate an electromagnetic switching valve
Since the (81) is switched, the seal bar (78) is installed on the seal base provided on the board every time the board (1) stops at a position facing it.
It is pushed toward (85) and heat seals the opening edge of the packaging bag (X).

When one set of vacuum suction bars (22) (23) move to point F and stop, the groove cam plate (12) reverses the 60-degree angle to cause the above 1
The space between the pair of vacuum suction bars (22) and (23) is opened, and at the same time, the fourth
In the figure, the cam (58) acts on the switch (59) and
Since the (60) is switched, the first cylinder (61) pushes up the spool (51) and shuts off the passage (56), so that the bag packaged product is a set of vacuum suction bars (22) (23). Dropped and eliminated.

On the other hand, in FIG. 1, a proximity switch is provided between points C and D.
(90) is installed to detect whether or not the packing bag (X) passing through here is filled with the object to be packed. Further, as shown in FIG.
(91) is installed, a large number of graduations formed on the peripheral surface of the annular body are detected by the switch (92) to generate a pulse signal, and the rotation angle of the rotor (2) is detected. While inputting to the controller (93) shown in Fig. 7,
The proximity switch (90) is connected to the controller (93). Therefore, in FIG. 1, when the proximity switch (90) detects that the packaging bag is not filled with the object to be packaged, the pulse generator detects the deviation of the rotation angle from the proximity switch (90) to point E. Read with the controller (93) to be connected, so that when the empty bag reaches point E, the current will not pass to the electromagnetic switching valve (81) that is the cutting means, so the heating seal for the opening edge of the packaging bag Is prevented.

Further, the proximity switch (90) and controller (93) are also connected to the electromagnetic switching valve (60) shown in FIG. 4 so that the electromagnetic switching valve (60) is a cutting means when the empty bag reaches point F. To prevent the cylinder (61) from pushing up the spool (51), so that one set of vacuum suction bar (22)
The vacuum suction force is continuously maintained at (23), and the empty bag is retained without falling from these vacuum suction bars (22) and (23). On the other hand, as shown in FIG. 6, the controller (93) and the proximity switch (90) are also connected to the electric circuit of the electromagnetic on-off valve (72) which is the cutting means of the bag feeding device, and the line (70) is closed. To prevent the vacuum suction force from acting on the vacuum cup (69) by holding the vacuum cup (69).
(23) is prevented from being supplied with another packaging bag. In this way, the empty bag is re-transported by the rotation of the rotor to give an opportunity to fill the object to be packaged.

(Other Embodiment) FIG. 4 shows a fluid cylinder for operating the spool (51).
Since it is (61), the means for cutting the power transmission is formed by the electromagnetic opening / closing valve (60), but it is also possible to move the spool (51) with pure mechanical power, for example, so in this case For example, an electromagnetic clutch can be used as a means, and the electromagnetic clutch can prevent the transmission of power to the spool (51). The same can be said for the electromagnetic switching valve (81) which is a cutting means of the power transmission system of the seal bar (78) in FIG.

Further, in FIG. 1, since the switch (90) is provided immediately behind the position where the packaging bag is filled with the objects to be packaged, the switch (90), the sealing position, the packaging bag releasing position, and the bag feeding position are There is a considerable deviation in the rotation angle between them, so the controller (93) is used to calculate the time lag for the empty bag to move to these three positions in sequence. If a switch is provided immediately before the position of the location to check the object to be packaged in the packaging bag, the above-mentioned calculation of the time lag becomes unnecessary.

In the embodiment, the lid (1) supporting the vacuum suction bar is provided with a lid material that can be opened and closed, the pressure chamber formed by the lid and the lid material is sealed, and the bag (X) is used for packaging in the sealed pressure chamber. The present invention can be applied to a so-called bag-filled vacuum packaging device that vacuum-packages items.

(Effect) The present invention is a switch that operates by filling an object to be packaged in a packaging bag, and when the filling of the object to be packaged in the packaging bag is not confirmed, the switch moves the seal bar and supplies the bag. The suction force of each vacuum cup is cut and the suction support force of the packaging bag by the vacuum suction bar is maintained.Therefore, the empty bag supported by the vacuum suction bar is transported again as it is, and the packaged item is re-loaded. Can give you the opportunity to fill,
There is no need to deal with the released empty bag as in the past, and the efficiency is improved.

[Brief description of drawings]

1 is a plan view showing an embodiment of the present invention, FIG. 2 is a vertical sectional view of the previous figure, FIG. 3 is a sectional view taken along line III-III in the previous figure,
4 is a sectional view of a valve for opening and closing a vacuum, FIG. 5 is a view taken along the line VV in FIG. 2, FIG. 6 is an explanatory view of a bag feeding device, FIG. 7 is an explanatory view of a sealing device, FIG. 8 is a plan view for explaining a conventional example. (2) …… Rotor, (6) …… Spindle, (8) …… Geneva,
(9) …… Drive shaft, (12) …… Groove cam plate, (22) …… Vacuum suction bar, (23) …… Vacuum suction bar, (26) …… Rotation restriction block, (29) …… Cam Groove, (31) (32) …… Suction hole, (49) …… Open / close valve, (51) …… Spool, (60) …… Solenoid switching valve, (72)…
… Electromagnetic on-off valve, (81) …… Electromagnetic switching valve, (X) …… Packaging bag,
(90) ... Proximity switch, (91) ... Annular body, (92) ... Switch, (93) ... Controller,

Claims (1)

[Claims] 1. A plurality of sets of two vacuum suction bars are arranged at equal intervals around a rotor, and the rotor and each vacuum suction bar are arranged at the same pitch as the arrangement interval of the vacuum suction bars of each set. Of the two vacuum suction bars of each set are opened and closed by a guide of a cam plate concentrically provided with the rotor so that the rotor rotates once during one rotation. Open the space between the vacuum suction bars at the first stop position, and supply the packaging bag with a vacuum cup between the opened vacuum suction bars to adsorb it to the vacuum suction bar. The space between them is greatly opened, the packaging bag is filled with the object to be packaged, the vacuum suction bar is closed at the rear stop position, and the bag mouth is pinched with a pair of seal bars to heat-seal it. At the stop position of A bag filling and packaging device that closes the open / close valve provided in the line that connects the empty suction bar to the vacuum source and drops the packaging bag from the vacuum suction bar. When the switch does not confirm the filling of the object to be packaged, the signal from the switch cuts off the vacuum suction force in the bag supply vacuum cup and the power to move the seal bar, respectively, A bag filling device configured to hold the line connecting the vacuum suction bar and the vacuum source in an open state.