JP2009107683A - Filling apparatus for packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filling apparatus for a packaging machine which suppresses a whirl up phenomenon of an article to be packaged at the time of filling by compressing at an appropriate time the article to be packaged in a funnel and filling it into a packaging bag under a small bulk condition and attempts to perform speed-up of a filling operation. <P>SOLUTION: A rotary table 15 is provided so as to synchronize with a rotor 4, and a lower slide 22 fitted with the funnel 23 and an upper slide 25 fitted with an air pressure cylinder 26 making a pushing rod 27 for pressing the article to be packaged freely move are provided on the rotary table 15 so as to be able to elevate and lower. A first elevating/lowering means for making the lower slide 22 freely elevate and lower in the feeding process for the article to be packaged, a second elevating/lowering means for making the upper slide 25 freely elevate and lower in a process before the filling process, a third elevating/lowering means for the upper slide 25 and a fourth elevating/lowering means for the lower slide 22 in the filling process, are respectively installed on a fixed table 19. During moving/stopping from the after-process of the feeding process for the article to be packaged to the filling process, the article to be packaged in the funnel 23 is compressed by a pushing-in operation of the pushing rod 27 to decrease the volume. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a filling device of a packaging machine that automatically fills a packaging bag in a state of being compacted and compacted to be packaged such as a light and easy-to-roll shaving.

  An example of a method for compressing and filling an object to be packaged in a conventional gas filling type packaging machine is shown in FIG. In this method, a predetermined amount of covering is applied with the bottom end of the funnel c facing the bag mouth b of the packaging bag a supported in a suspended manner by a grip pair (not shown) of the packaging machine. The package f is put into the funnel, and then the package bag a is filled while the package f is pushed by the push rod d. About the processing capacity by this compression filling method, it is 15-18 bags per minute.

However, if the packaged item is light and bulky like a shaving node, it is filled while being pushed by the push rod d and expels air contained in the shaving node in the packaging bag, so the shaving node soars and jumps out. Or may adhere to the inner surface of the bag mouth. In addition, in the state where the packaged item is bulky in the packaging bag, the packaged product rises when inserting the nozzle into the packaging bag and injecting the inert gas in the subsequent process of the packaging process, and gas filling work Cause trouble.

The present applicant has developed a push-in device that compresses a packaged article such as a shaving joint placed in a packaging bag with a push rod so as to deal with such a problem (utility model registration No. 2520262). However, when the pushing operation is also accelerated by the pushing device, the packaged material rises and becomes unsettled, so that the pushing operation cannot be made too fast.
Utility Model Registration No. 2520262

  The object of the present invention is to fill the packaging bag in a state where the packaged object is compressed in a funnel in a timely manner to make it small, thereby suppressing the phenomenon of the packaged article rising during filling and increasing the speed of the filling operation. An object of the present invention is to provide a filling device for a packaging machine.

In order to achieve the above object, the invention described in claim 1 is such that a moving body having one or a plurality of grip pairs is intermittently stopped in a large number of steps and supported in a suspended manner by each grip pair. In a filling device of a packaging machine configured to fill a packaging bag with a predetermined amount of a compressible package,
An annular rotary table attached to a vertical intermittent rotary shaft is provided so as to rotate and move in a plurality of steps in synchronization with the moving body of the packaging machine by a driving means, and each of the rotary tables is arranged corresponding to each step. A lower slide with a funnel with a release port that can be freely opened and closed, and an upper part with an actuator that allows the push bar that presses the package to be loaded into the funnel to move up and down. A vertically-moving cylindrical cam with a lower slide cam on the bottom and an upper slide cam on the fixed table attached to the center shaft concentrically arranged in the intermittent rotation shaft. The pin provided on the lower slide can be engaged with the cam groove of the lower slide cam, and the pin provided on the upper slide can be engaged with the cam groove of the upper slide cam. First lowering means for allowing the lower slide to be moved up and down by a servo motor device in the loading process, and second for allowing the upper slide to be moved up and down by the servo motor device in a step prior to the filling step. Elevating means and third elevating means for allowing the upper slide to be raised and lowered by a servo motor device and a fourth elevating means for allowing the lower slide to be raised and lowered by a servo motor apparatus in the filling step are respectively installed on the fixed table. And
In the loading process, the first lifting / lowering means is actuated to raise the top of the funnel until it is close to the discharge port of the weighing means. During the period from the post-process to the filling process, the article to be packaged in the funnel is compressed by the operation of the actuator so as to reduce the bulk, and the bag mouth of the packaging bag intermittently stopped in the filling process is third. The lower end of the funnel is inserted by the linkage action of the elevating means and the fourth elevating means, and at the same time, the discharge port is opened, and the packaged material which is made small is pushed and filled by the push rod. Features.

  According to the filling device of this packaging machine, the charging operation to the funnel of the package and the filling operation to the packaging bag are performed in two steps in different processes, and the package is being moved / stopped in the funnel. Since the packaging bag is filled in a state of being compressed and timely, the packaging capacity can be improved from the conventional 15 to 18 bags per minute to about 30 bags per minute, and the filling operation can be speeded up. . Furthermore, it is possible to suppress the rising phenomenon of the packaged object as much as possible.

  The best mode of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a packaging machine to which a filling apparatus according to the present invention is applied, FIG. 2 is a side view of the same, FIG. 3 is an explanatory view of the main part of the filling apparatus, and FIG. FIG. 5 is a development view of the lower slide cam and the upper slide cam, FIG. 6 is an explanatory view showing the relative positional relationship between the funnel and the push rod, and FIG. 7 is related to the present invention. It is explanatory drawing of the filling operation | work by the filling apparatus of a packaging machine.

FIG. 1 shows a rotary type gas filling type packaging machine P to which a filling device 10 for a packaging machine according to the present invention is applied. This packaging machine P includes a bag feeding process (1), a printing process (2) such as an expiration date, a packaging bag opening process (3), a filling process (4) of an article to be packaged such as a shaving knot, and a pushing process (5). , Nozzle insertion and bag mouth temporary sealing process (6), gas replacement / brushing process (7) to (12), top sealing process (14), sealing part cooling process (15), product removal process (16), etc. It consists of 16 steps.
In addition, about the to-be-packaged goods handled in this Example, it is a "shaving node" of the property that it is bulky and light and tends to rise.

  As shown in FIG. 2, on the machine base 1 of this packaging machine P, the stand 3 which supported the intermittent rotating shaft 2 of the vertical direction freely was provided. The disc-shaped rotating body 4 attached to the intermittent rotating shaft 2 is used to hold or release the packaging bags a supplied one by one from the bag feeding device 6 in the bag feeding step (1) (step). Sixteen grip pairs g (the same number as the number) are provided so as to protrude radially at equal angular intervals.

  In this embodiment, the apparatus according to the present invention is applied to a rotary type packaging machine P, but it is also possible to apply it to a linear movement type packaging machine.

  The filling device 10 includes an input process (21) of an article to be packaged (cutting joint) from a measuring means (not shown) into the funnel, a process (22) in which an external pushing device and the like can be installed, In the case of a malfunction, it consists of eight steps of the outside discharge step (23), the pushing step (24), the filling step (25), and the idle steps (26) to (28) when discharging the object to be packaged by the measuring means.

  A stand 11 installed on the machine base 1 is provided with a vertically extending intermittent intermittent rotating shaft 13 via bearings 12a to 12c (FIG. 4). The annular rotary table 15 attached to the flange 13a of the intermittent rotary shaft 13 is synchronized with the rotary body 4 by a known driving means (not shown) constituted by an index device and a gear, and in this case, there are eight steps. These steps are provided so as to move intermittently. Reference numeral 18 denotes a central shaft disposed concentrically inside the intermittent rotation shaft 13. A fixed table 19 attached to the tip of the middle shaft 18 is fixed to an upper end surface of a support member 17 provided on the intermittent rotation shaft 13 through bearings 16a and 16b so as to be relatively rotatable.

  As shown in FIG. 3, a pair of guide bars 20 are arranged on the outer peripheral edge of the turntable 15 so as to correspond to each process, and a lower slide 22 having a funnel 23 attached to each guide bar 20 and a push The rod 27 is provided so as to be movable up and down as a set with an upper slide 25 to which a pneumatic cylinder 26 is attached as an actuator that allows the rod 27 to move in the vertical direction. The upper end of each guide bar 20 is connected by a ring plate 21 so as not to wobble. The push rod 27 is provided to press the shaving node introduced into the funnel 23, and a substantially cylindrical block 28 provided with a pin 29 at the tip is attached to the lower end of the push rod 27. (Figure 6).

  A pair of bowl-shaped opening / closing pieces 24 is provided at the discharge port 23 b of each funnel 23. Specifically, the opening / closing piece 24 is always urged so as to close the discharge port 23b by a spring (not shown), and is partially pressed by an actuator (not shown) arranged in the filling step (25). So that the discharge port 23b is opened.

  As shown in FIG. 5, the fixed table 19 is provided with a lower slide cam 31 on the lower side and an upper slide cam 35 on the upper side in the shape of a vertical cylindrical cam. For the lower slide cam 31, the upper cam plates 32a and 33a and the lower cam plates 32b and 33b are arranged so that a cam groove 34 having a constant width is formed. Similarly, with respect to the upper slide cam 35, the upper cam plates 36a, 37a, 38a and the lower cam plates 36b, 37b, 38b are arranged such that a cam groove 39 having a constant width is formed. Then, the pin 22a (or cam follower) provided on the back side of the lower slide 22 is in the cam groove 34 of the lower slide cam 31, and the pin 25a (or cam follower) provided in the upper slide 25 is the cam groove of the upper slide cam 35. 39 are provided so as to be engageable with each other.

  The lower slide cam 31 is not provided in the charging step (21) and the filling step (25). Further, the upper slide cam 35 is not provided in the out-of-system discharge step (23) and the filling step (25).

  On the fixed table 19, a first lifting / lowering means for allowing the lower slide 22 to be raised and lowered in the package loading process (21), and an upper slide 25 in the system discharge process (23) that is a process prior to the filling process. The second raising / lowering means for raising and lowering the upper slide 25 and the fourth raising / lowering means 60 for raising and lowering the lower slide 22 are installed in the filling step (25). .

  As shown in FIG. 3, the third elevating means 45 is slidably mounted on a pair of guide bars 46 erected on the outer peripheral edge of the fixed table 19, and is projected from the front surface of the slider 50. The support piece 51 is provided so that the pin 25a of the upper slide 25 can be supported. The upper end of the guide bar 46 is connected to the ring plate 47.

  The frame 52 installed on the fixed table 19 is provided with a servo motor device 57 that vertically arranges pulleys 53 and 54 to freely rotate in the vertical direction and drives and rotates one pulley 53. A rear portion 50 b of the slider 50 is attached to the timing belt 55 that is stretched between the pulleys 53 and 54. Thus, the slider 50 is moved up and down by driving and rotating the pulley 53 by the servo motor device 57.

  As for the fourth elevating means 60, a slider 61 is slidably mounted on the guide bar 46, and a pin 22a of the lower slide 22 is provided so as to be supported by a support piece 62 protruding from the front surface of the slider 61. Yes. The frame 52 is provided with a servo motor device 67 that vertically arranges pulleys 63 and 64 to freely rotate in the vertical direction and drives and rotates one pulley 63. A rear portion 61 b of the slider 61 is attached to the timing belt 65 that is stretched between the pulleys 63 and 64. Then, the pulley 61 is driven and rotated by the servo motor device 67 to move the slider 61 so that the funnel 23 can be moved up and down.

  The first lifting means has the same structure as the fourth lifting means 60 described above, and the description of the structure is omitted. Reference numeral 41 shown in FIG. 5 is a support piece of a slider (not shown). Further, since the second lifting / lowering means has the same structure as the third lifting / lowering means 45, the description of the structure is omitted. Similarly, reference numeral 43 denotes a slider support piece (not shown).

As shown in FIG. 5, the cam groove 34 of the lower slide cam 31 has a substantially chevron shape, and is formed at the highest position in the pushing step (24). In the pushing step (24), the funnel 23 is raised by the linkage action of the lower slide cam 31 and the lower slide 22, so that the article to be packaged in the funnel 23 can be compressed.
As described above, the filling device 10 of the packaging machine according to the present invention is configured.

Next, the operation of the filling device 10 of the packaging machine according to the present invention will be described.
(1) In the loading step (21) of the article to be packaged, the funnel 23 is raised in the state in which the upper opening 23a of the funnel 23 is raised by the operation of the first elevating means until it comes close to the discharge port (not shown) of the weighing means. 100 to 150 g of a cut k, which is a packaged object, is put in (Fig. 7).
(2) During movement / stop from the step (22) where the external pushing device or the like can be installed to the filling step, the push rod 27 is pushed a plurality of times by the operation of the pneumatic cylinder 26, whereby the shaving node in the funnel 23 Compress k to make the bulk about 1/3 to 1/5. When a signal indicating that the packaging bag is not gripped by the n-th grip pair g is input from the control unit of the packaging machine P to the control unit of the compression filling device 10, the charging process is performed accordingly. The cutting node k input in (21) is discharged out of the system.
(3) In the filling step (25), at the same time as inserting the lower end of the funnel 23 into the bag mouth b of the packaging bag a intermittently stopped on the packaging machine side by the linkage action of the third elevating means 45 and the fourth elevating means 60. The opening / closing piece 24 is opened, and the shaving k that has been made small is pushed in by the push rod 27 and filled. Next, when the push rod 27 is pushed once, the shaving k in the packaging bag a is compressed and the bulk becomes small.
(4) When the shaving k is filled in the packaging bag a, the push rod 27 and the funnel 23 are raised to the original standby position in this order, and the open / close pieces 24 and 24 of the funnel 23 are closed.
Thereafter, the series of actions (1) to (4) is repeated, so that the cut k is sequentially filled into the packaging bag a intermittently fed into the filling step (25).

  As described above, the filling device of the packaging machine performs the operation of charging the packaged article into the funnel and the process of filling the packaging bag in two steps in different processes and also places the packaged article in the funnel. Since the packaging bag is filled in a state of being compressed and timely compressed during movement / stopping, the packaging capacity is improved from the conventional 15 to 18 bags per minute to about 30 bags per minute.

The top view of the packaging machine to which the filling device concerning the present invention is applied Same side view Explanatory drawing of the main part of the filling device Sectional view showing enlarged intermittent rotation shaft Exploded view of lower and upper slide cams Explanatory drawing showing the relative positional relationship between the funnel and the push rod throughout the entire process Explanatory drawing of the filling operation | work by the filling apparatus which concerns on this invention Explanatory drawing of filling work by conventional packing means

Explanation of symbols

P: Gas filling type packaging machine g: Grip pair a: Packaging bag b ... Bag mouth k: Sharpening (packaged item)
DESCRIPTION OF SYMBOLS 10 ... Filling device 13 of packaging machine concerning this invention ... Intermittent rotating shaft 15 ... Rotary table 19 ... Fixed table 20 ... Guide bar 22 ... Lower slide 23 ... Funnel 25 ... Upper slide 26 ... Pneumatic cylinder (actuator)
27 ... Push rod 31 ... Lower slide cam 34 ... Cam groove 35 ... Upper slide cam 39 ... Cam groove 45 ... Third elevating means 57 ... Servo motor device 60 ... Fourth lifting means 67 ... Servo motor device

Claims (1)

A movable body having one or many grip pairs is intermittently stopped and moved in a number of steps, and a predetermined amount of a compressible package is filled in a packaging bag supported in a suspended manner by each grip pair. In the filling device of the packaging machine configured in
An annular rotary table attached to a vertical intermittent rotary shaft is provided so as to rotate and move in a plurality of steps in synchronization with the moving body of the packaging machine by a driving means, and each of the rotary tables is arranged corresponding to each step. A lower slide with a funnel with a release port that can be freely opened and closed, and an upper part with an actuator that allows the push bar that presses the package to be loaded into the funnel to move up and down. A vertically-moving cylindrical cam with a lower slide cam on the bottom and an upper slide cam on the fixed table attached to the center shaft concentrically arranged in the intermittent rotation shaft. The pin provided on the lower slide can be engaged with the cam groove of the lower slide cam, and the pin provided on the upper slide can be engaged with the cam groove of the upper slide cam. First lowering means for allowing the lower slide to be moved up and down by a servo motor device in the loading process, and second for allowing the upper slide to be moved up and down by the servo motor device in a step prior to the filling step. Elevating means and third elevating means for allowing the upper slide to be raised and lowered by a servo motor device and a fourth elevating means for allowing the lower slide to be raised and lowered by a servo motor apparatus in the filling step are respectively installed on the fixed table. And
In the charging process of the package, the package is loaded into the funnel in a state where the upper opening of the funnel is raised by the operation of the first elevating unit until it approaches the discharge port of the weighing unit,
Between the post-filling process and the filling process of the packaged object, the packaged object in the funnel is compressed by the operation of the actuator to reduce the bulk,
The article to be packaged is made small by inserting the lower end portion of the funnel into the bag mouth of the packaging bag that is intermittently stopped in the filling step by the linkage action of the third raising / lowering means and the fourth raising / lowering means. A filling device for a packaging machine, which is provided so as to be filled by being pushed by the push rod.

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