JPS6335501B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention provides an apparatus for supplying ham and sausage bags, each of which has one end of a tube bound with a ring-shaped clip, sequentially arranged side by side along the width direction on a conveyor belt. In particular, a bag is essential as a pre-stage for automatic operation in which a system for supplying contents such as ham and sausage is operated from the side with respect to the running direction of the belt, and the contents are sequentially inserted into the bag. Regarding automatic feeding equipment.

b. Prior Art Conventionally, the work of inserting ham sausages into bags has been done because of the shape, thickness, and
Because they are uneven in length and weight, and are slippery due to fat, it has been difficult to automate them and has relied solely on manual labor.

In general bagging work, a large number of bags are aligned vertically and stacked together, and the bag openings are pressed all at once, and while air is blown from the opposite direction to the bag opening, the presser foot above the topmost bag opening is removed with fingers. Integrated bag supply devices are well known in which air is introduced into the bag to inflate and open the bag.

c Problems to be Solved by the Invention However, the shape of the bag suitable for the above-mentioned integrated supply is limited to a uniformly thin bag with a rectangular flat bottom. The bag for packaging ham and sausage in question is different from the above, as it is a type in which one end of the tube is gathered in the center and tied with a ring-shaped clip, so there are folds at the bottom of the bag. They are bulky, and it is not only impossible to accumulate them in large numbers because the load may collapse, but it is also not convenient to store them in a compact form.

As a means to solve the above-mentioned inconvenience, it is conceivable to supply bags of this kind to be placed one after another on a conveyor belt at slightly different locations. In particular, it is advantageous to place the bags along the width of the conveyor belt, since this allows a large number of bags to be juxtaposed on the conveyor belt in relation to the running displacement of the conveyor belt.

However, in order to place the bags along the width direction on the conveyor belt, it is necessary to lay the bags in a direction 90 degrees different from the running direction of the belt. However, the above requirements are not met. Not only that, but
The bags are light so they can be moved easily when placed on the conveyor belt, and the ring-shaped clip at the end of the tie acts like a weight and can easily bounce on the conveyor belt, making it easy to place the bags in the correct position one after another. , it is extremely difficult to keep it from moving from there.

Despite these technical difficulties, sequentially arranging bags side by side along the width direction on a conveyor belt is useful for the next step, which is inserting the contents into the belt from the side. It is coveted as something essential to smooth relationships.

The purpose of the first invention is to properly place bags with one end of a tube bound with a ring-shaped clip at equal intervals along the width direction of the conveyor belt, which has a phase difference of 90 degrees from the running direction of the conveyor belt. is possible,
Moreover, it can be kept stationary from the position where it is placed, and furthermore, if necessary, it can be easily adjusted to move in any direction, and
An object of the present invention is to create and provide a general-purpose bag automatic feeding device that can easily handle both large and small bags when conveyed on a conveyor belt.

A second object of the invention is that when a bag having a tied end on one side is dropped onto a conveyor belt, the tied end of the bag will be damaged due to the weight of the ring-shaped clip.
Depending on the distribution of the bag, such as the overall length of the bag, the thickness and flexibility of the film that makes up the bag, and/or the height at which the bag is dropped, it can bounce on the conveyor and settle down in its proper position. To create and provide an automatic bag feeding device capable of surely placing a tied end of a bag at a proper position on a conveyor belt even in such a case.

d. Means for solving the problem The configuration of the present invention includes a guide mechanism that sequentially lowers the tied end of the bag upward and the open end downward,
A gripper equipped with a plurality of arm ends having a common rotation axis, each of which has a clipper that opens and closes backward in the rotational direction, and a cam mechanism that closes each clipper 1/4 turn before the lowest rotational position and opens the clipper at the lowest rotational position. A wheel is provided, which runs in a horizontal direction parallel to the axis of the common rotational axis at a height substantially equal to the lowest rotational position at which the clipper is released, and has a width on which the bag is placed in the longitudinal direction, and is attached to the clipper. The bag is provided with a vacuum type conveyor belt having a large number of suction holes along the near edge surface for sucking the part near the mouth of the bag.

On the other hand, in order to achieve the object of the second invention, in addition to the above structure, a bar is further provided along the horizontal direction parallel to the axis of the common rotation base, and the bar is located at the lowest rotational position of the clipper. A driving means is provided for displacing the upper part of the conveyor belt in the width direction thereof from directly above the conveyor belt.

e Action: The clipper grips the bottom end of the bags that are fed sequentially from top to bottom at a position 1/4 turn from the top position, and releases it at the bottom rotation position, a further 1/4 turn from that position. The position of the bags is sequentially changed from the vertical position to the horizontal position, and then the bags are placed one after another on a vacuum type conveyor equipped with suction holes at the lowering position, and at the same time, the bottom surface of the bags is suctioned by the suction holes. , thereby ensuring the positioning of the bags on the belt and sequentially feeding the bags toward the contents insertion section while preventing the bag from being disturbed.

When the bar is moved forward when the clipper reaches the lowest rotational position, the bar will pay out the tied end of the bag in the width direction of the conveyor belt. Even if the belts try to overlap in a bent state, this is prevented and the belts are stretched along the width of the conveyor belt.

f Examples The structure and operation of the present invention will be described in detail below with reference to the drawings according to specific embodiments thereof.

First, in FIG. 1, when a flat film tube 6 is fed downward from above by a feeding mechanism (not shown), it is shirred at predetermined intervals, and the shirred portion forms a ring-shaped film tube. At the same time as they are bound with the clips 7, the right upper part of the bound part is cut by the cutter 8 to form a bag 9 for packaging ham and sausage.

At the time of cutting, the clip 7 is located at the upper end of the bag 9, so there is a risk that it will fall all at once due to gravity.To prevent this, a pair of nipping rolls 10 and 11 are prepared, and when cutting, one roll 10 is in contact with the roll 11 on the other side, and the bag 9 is sandwiched and supported between them. Due to this action, the tied end of the bag does not fall all at once, but is supported between the left and right guide plates 12 and 13. The nipping roll 10 on one side, which has completed the clamping operation during cutting, moves away to the left in the figure so as not to interfere with the normal descent of the bundled end 7.

The lower sides of the pair of nipping rolls 10 and 11 are guided by a pair of guide plates 14 and 15. Each end portion 14a and 15a of this guide plate
A spiral spring is formed, and the extra length is wound up in a spiral shape, and when the length of the bag 9 is long, the extra length is paid out correspondingly to change the effective guiding length. Can be done.

Next, a gripping wheel for horizontally transporting the vertical bag 9 will be explained.

Arms 17, 18, 19 and 20 of the same length are protruded from a common rotation axis 16 at intervals of 90 degrees, and a pair of opposing levers 21 and 20 are attached to the free end of each arm in an attitude of opening and closing backward in the rotational direction. 22
A clipper consisting of is provided. The shafts 23 and 24 of the pair of levers are provided with spur gears 25 and 26, respectively, to engage with each other, and an arm 27 is projected from one shaft, for example, 23, and a cam follower 28 is provided at the free end of the arm 27, and a cam follower 28 is provided at the free end of the shaft. 27 is constantly pulled in the direction of the center of rotation by a tension spring 29, while a disk-shaped cam 30 is provided which is rotatable with respect to the rotational axis 16 via a bearing, and the cam follower 28 is attached to the circumferential surface of this cam 30.
are pressed together by the action of the spring 29. In addition,
By pivoting one end of a link 31 to a non-centered portion of the cam 30 and displacing the link in the longitudinal direction with a lever 32, the phase of the cam 30 can be changed, so that the opening/closing phase of the clipper can be changed to the length or shortness of the bag. It can be converted and adjusted to the optimal position. In this embodiment, the phase of the cam 30 is adjusted so that the clippers 21 and 22 are closed when they reach a position 1/4 turn from the highest position, and are opened when they are at the lowest rotational position.

The gripper wheel configured as described above performs an intermittent rotational motion that stops every 1/4 rotation. As an example of the configuration, a driven Geneva wheel 33 is attached to the rotating base shaft 16, a pin 34a on a driving Geneva wheel 34 is engaged with a radial groove 33a of the wheel, a sprocket 36 is provided on the shaft 35 of the driving Geneva wheel 34, and a chain Rotational power is transmitted via 37. As this Geneva-type intermittent drive mechanism, a well-known one is used.

The endless conveyor belt 40 has a pair of rolls 38 and 40 running in a horizontal direction parallel to the axis of the common rotating shaft at a height approximately equal to the lowest rotational position at which the clippers 21 and 22 of the gripper wheels are released. It is mounted between 39 spaces. The belt 4
The bag 9 has a width sufficient to allow the bag 9 to be placed thereon in the longitudinal direction, and a large number of intake holes 41 are provided along the edge surface on the side closer to the clippers 21 and 22. 42 is an intake duct communicating with the pore 41.

Note that the conveyor belt 40 runs intermittently in conjunction with the intermittent rotation of the gripping wheel. That is, the first
As shown in the figure, a sprocket 53 is provided at the shaft end of the roll 38 and driven by a chain 54, and the chain 54 is mounted on a sprocket 55 as shown in FIG. 56
A driven Geneva wheel 57 is fixed, and this wheel 57 engages with the driving Geneva wheel 34 to intermittently transmit its power.

Next, since the ring-shaped clip 7 at the tied end of the bag 9 is made of metal and is heavy, it will cause the conveyor belt 40 to
When the bag is thrown upward, it bounces and does not rest in the correct position. This problem occurs when the film of the bag is thin and flexible and the length of the bag is particularly long, and vice versa. It occurs relatively rarely.

Therefore, in preparation for the above, it is necessary to always have a special means for placing the bag end on the clip binding side on the conveyor belt 40, and to operate it as necessary.

The bag end positioning means is the common rotation axis 16.
A bar 43 is provided in the horizontal direction parallel to the axis of the clippers 21, 22, and driving means is provided for displacing the bar from just above the lowest rotational position of the clippers 21, 22 along the width direction of the conveyor belt 40, As an example of driving the bar 43, as shown in FIGS. 3 and 4, a mounting bracket 44 for fixing one end of the bar 43 is incorporated into a part of an endless chain 45, and the chain is connected to four sprockets 4.
6, 47, 48, and 49, a pinion 50 coaxial with the sprocket 49 is engaged with the drive gear 51, and a link 52 is pivotally supported at a non-center portion of the gear 51.
When the gear 51 is sequentially rotated in both the forward and reverse directions through the , the bar 43, which is displaced together with the chain 45, reciprocates between the solid line position and the two-dot chain line position in FIG. Therefore, if the forward movement of the bar 43 is linked to the time when the clippers 21 and 22 reach the lowest rotational position, the bound ends of the bags 9 will be discharged by the bar 43 along the width direction of the conveyor belt 40. Even if the bag end binding portion were to overlap the bag 9 in a bent state, this would be prevented and the belt 4
It will be correctly expanded and placed in the width direction of 0.

g Effect of the Invention This invention lowers the bag 9 with the end bound by the ring-shaped clip 7 positioned above, holds the lower end opening of the bag in the clipper 21 of the car,
22 and rotate it 1/4 turn, the opening being held in the bag changes from a vertical position to a horizontal position, and along with this, the upper end binding part of the bag also descends from the guide mechanism and becomes free. At the same time, the bag 9 falls onto the conveyor belt 40 due to the weight action of the clip 7, and the entire bag 9 is placed in an unfolded state along the width direction of the belt 40 without any bending. Since the portion near the end is immediately sucked in by the air in the pores 41 on the belt 40, the bag 9 is attracted onto the belt 40 and is transported without easily moving from that position even when external pressure is applied. Ru.

However, as shown in FIG. 5, if necessary, during conveyance by the conveyor belt 40, if the open end of the bag 9 is pulled from the side of the belt 40 by a means (not shown), the bag can be removed by the amount that is pulled by the force. 9 is easy to displace.

Furthermore, the suction pores 41 on the conveyor belt 40 attract the portions of the bags 9 near the open ends, and since there are no chipped portions along the running direction of the belt 40, the bags supplied are of different sizes. This can be adequately addressed without any reduction in effectiveness.

In this way, the bags 9 with tied ends can be correctly arranged one after another at equal intervals along the width direction of the conveyor belt 40, so that the bags 9 can be sequentially placed next to each other at equal intervals along the width direction of the conveyor belt 40. It is now possible to reliably supply it automatically.

Furthermore, if the bag 9 is particularly long or made of a particularly flexible material, the tied end will bend when placed on the conveyor belt 40. If the bag 9 is displaced along its bar 43, the tied end of the bag 9
This movement ensures that it is stretched on the belt 40.

[Brief explanation of the drawing]

The drawings illustrate one specific embodiment of the invention.
Figure 1 is a front view, Figure 2 is a developed longitudinal sectional view taken along line 2-2 in Figure 1, Figure 3 is an enlarged cross-sectional plan view taken along line 3-3 in Figure 1, and Figure 4 is a cross-sectional view taken along line 3-3 in Figure 1. 3 is a longitudinal sectional front view taken along the line 4-4, and FIG. 5 is a lateral plan view taken along the line 5-5 of FIG. 6... Flat film tube, 7... Ring-shaped clip, 8... Cutter, 9... Bag, 10 and 11... Nipping roll, 12, 13, 14 and 15... Guide plate, 16... Common rotation axis, 17, 18, 1
9 and 20...Arm, 21 and 22...Opposing lever type clipper, 23 and 24...Shaft, 25 and 26
...Spur gear, 27...Arm, 28...Cam follower,
29... tension spring, 30... cam, 31... link, 32... lever, 33... driven Geneva wheel,
33a... Groove, 34... Drive Geneva wheel, 34a
...Pin, 35...Shaft, 36...Sprocket, 37...
Chain, 38 and 39... Roll, 40... Conveyor belt, 41... Intake pore, 42... Intake duct,
43... Bar, 44... Mounting bracket, 45... Endless chain, 46, 47, 48 and 49... Sprocket, 50... Pinion, 51... Gear, 52... Link, 53... Sprocket, 54... Chain, 55...
Sprocket, 56...shaft, 57...driven Geneva wheel.

Claims (1)

[Scope of Claims] 1. A guide mechanism that sequentially lowers the tied end of a flat tube-shaped bag upward and the open end downward; a plurality of arms equally spaced and of equal length having a common rotation axis; A plurality of clippers consisting of a pair of opposing levers are provided at the free end of the arm in a position to open and close backward in the rotational direction, and each clipper closes before 1/4 turn from the lowest rotational position to open the bag. a gripper wheel including a cam mechanism that grips the end and releases it at the lowest rotational position; and an intermittent rotation mechanism; A number of intake pores running in parallel horizontal directions, having a width on which the bag is placed in the longitudinal direction, and sucking a portion of the bag near the mouth along the edge surface on the side closer to the clipper. An automatic bag feeding device comprising: a vacuum type conveyor belt which is provided with a conveyor belt and which runs intermittently in conjunction with the gripping vehicle. 2. A guide mechanism that sequentially lowers the tied end of a flat tube-shaped bag upward and the open end downward, a plurality of arms equally spaced and of equal length having a common rotation axis, and a free end of each arm. A plurality of clippers consisting of a pair of opposing levers are provided in a position to open and close backward in the direction of rotation, and each clipper closes before 1/4 turn from the lowest rotational position, grips the open end of the bag, and rotates to the lowest rotation. a gripper wheel having a cam mechanism for opening the clipper at a position and an intermittent rotation mechanism; and a gripper wheel running in a horizontal direction parallel to the axis of the common rotation base at a height substantially equal to the lowest rotational position at which the clipper is released. The bag has a width on which the bag is placed in the longitudinal direction, and a large number of suction holes are provided along the edge surface on the side closer to the clipper for suctioning a portion of the bag near the mouth, and the bag has a width on which the bag is placed. a vacuum type conveyor belt that runs intermittently in conjunction with a vehicle; a bar provided along a horizontal direction parallel to the axis of the common rotation base; and the bar extends from just above the lowest rotational position of the clipper to the conveyor belt. An automatic bag feeding device comprising: a bag end positioning means on the clip binding side, comprising a driving means for displacing the upper part of the bag along the width direction thereof.