JPH0398828A - Apparatus for wrapping product - Google Patents

Abstract

PURPOSE:To make it possible to correct a bag position prior to fusion by providing over a belt conveyer a bag posture controller which faces and interferes with a bag being carried to suppress the carry to make the bag stable but which cancels the suppression when forced carry force of the bag in contact with a carry engaging body is applied to the controller. CONSTITUTION:A bag posture controller 80 is placed over a belt conveyer 3 on the way to a sealing device 9. This bag posture controller 80 faces and interferes with a bag being carried to suppress the carry to make the bag stable, but when a carry engaging body 6a is engaged with a side edge of the bag and the bag is to be forced to be carried, the controller 80 cancels the suppression to have the bag passed through. The bag posture controller 80 consists of an elastic interfering body 81 hung from above toward a belt conveyer 6. Thus a fusing line by a sealing device 10 can correctly go along with an expected specific line of an opening rim of the bag.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention... After the bag is loaded with products, the bag is transported by a conveyor and the opening edge of the bag is automatically fused and welded by a sealing device, so that the fused and welded line can be precisely aligned on the desired line. the equipment that was used.

[Conventional technology]

From before. As a bag for product packaging. A bag made of synthetic resin film and having an opening at one end and a header section at the other end is known.9 This bag is made by melting and welding the edges of the opening after loading the product through the opening. Seal tightly. and. When selling products, they are displayed by hanging the product with the header facing upward. In the past, loading products into bags and fusing and welding the opening edges were all done manually. That is, after a product is loaded into a bag, the bag is held by the operator's hands, and the opening edge of the bag is placed in a heat sealing device, and the opening edge is fused and welded. Conventional heat sealing equipment uses nichrome wire or a heating blade that moves up and down. [Problems to be solved by the invention] In the case of the conventional technology, there is a problem in that product packaging using bags is inefficient and productivity is low. For this reason, there is a desire to automate at least the fusing and welding of the opening edges among the packaging operations. There are still many issues with automatically fusing and welding bags containing products while transporting them. In other words, it is relatively simple to imagine that the above-mentioned demand for movement could be met by automatically welding the opening edge with #A welding using a sealing device while the bag is transported by a conveyor such as a belt conveyor. It can be easily deduced. On this occasion. The bag loaded with products is slid onto the belt conveyor using a sheet, etc. In terms of automation, it is preferable to configure the system so that the bags placed on the belt conveyor are transported as they are to the sealing device. By the way, the bags that are casually slid down the chute are not necessarily placed in the predetermined direction and position with respect to the belt conveyor. Therefore, as a positioning means for the bag, it is preferable to provide conveyance locking bodies that abut against the side edges of the bag and lock in the conveyance direction so as to protrude at intervals in the longitudinal direction of the belt. However, there is no problem if the side edge of the bag is along the conveyance stopper at the moment the bag is slid down from the chute and placed on the belt conveyor. Often, the bag is deviated and dropped without following the transport stopper, or the cough bag straddles the transport stopper. The transport locking body may not function as a means for positioning the bag. As a result, the weld line created by the sealing device did not line up exactly along the planned line of the opening edge of the bag, and the sizes and shapes of each bag after sealing did not match.
This raises the important issue of loss of commercial value. [Means for Solving the Problems] The present invention has been developed to solve the above two problems, and a product packaging device based on the present invention includes a guide device for sliding down a bag loaded with products; Equipped with a belt conveyor that receives, places and conveys the dropped bag, and a sealing device that welds the opening edge of the bag while being conveyed by the belt conveyor:
The belt conveyor is constructed by protruding conveyance locking bodies at intervals in the belt longitudinal direction that abut against the side edges of the bags and lock them in the conveyance direction. Conveyance is restrained by interfering with the bags being conveyed above the conveyor to keep the bags stationary, but the restraint is released when forced conveyance force of the bags in contact with the conveyance locking body is applied. It is characterized by: being equipped with a bag body control device. The conveyance control device can be configured by a flexible interference body suspended from above toward the belt conveyor. Furthermore, the product packaging device according to the present invention includes a guide device that slides down the bag loaded with the product, and a belt conveyor that receives, places, and conveys the dropped bag. Equipped with a sealing device that welds the opening edge of the bag during conveyance by a belt conveyor:
The belt conveyor is. Conveyance locking bodies that come into contact with the side edges of the bag body and lock in the conveyance direction are provided protrudingly at intervals in the belt longitudinal direction: on the conveyance path of the bag body before reaching the sealing device, A bag body control device is provided which applies a restraining force to the bag body in opposition and releases the restraining force by detecting that the bag body is locked to the conveyance locking body. ．． [Example] An example of the device of the present invention will be described in detail below based on the drawings. (Overall configuration) Figure 1 shows the entire device of the present invention. A frame 2 is mounted on the base 1, and a belt conveyor 3 is provided on the frame 2. The belt conveyor 3 includes a driving bobbin 4 and a driven pulley 5 that are mounted on both ends of the frame 2 in the longitudinal direction, and a conveyor belt 6 that is wound around both pulleys. The conveying side of the belt 6 is located above a conveying table 7 extending from the frame 2. The return side of the belt 6 is located below the conveyance table 7. The conveyor belt 6 has rib-shaped conveyance locking bodies 6a extending in the width direction of the belt and projecting at intervals in the belt longitudinal direction.
This interval is larger than the width of the bag, which will be described later, and comes into contact with the side edge of the bag placed on the belt 6 and is locked in the transport direction. On the upstream side of belt conveyor 3. A working section 8 is provided for filling the bag with products. A sealing device 9 for sealing the opening edge of the bag body is provided on the midstream side of the conveyor 3, and a sealing device 9 for welding the opening edge of the bag body is provided on the downstream side of the conveyor 3. 10 are provided. and,
A bag control device 80 is provided above the belt conveyor 3 at a position on the way to the sealing device 10. As shown in the second figure, the frame 2 is pivoted 11 to the base 1 on one side and connected to the base 1 on the other side via a lifting mechanism 12 such as a turnbuckle. It is held in an upwardly inclined position facing the working section 8, and the inclination angle can be adjusted freely. (Organization of the working section) As shown in Fig. 1 and Fig. 2 (A), the working section 8 has a working table 13 and... Holding table 14 and guide device 1
5. As shown in FIG. 1, the work table 3 includes a horizontal waiting section 16 where products to be loaded into bags are placed on standby, and a horizontal waiting section 16 that is gently tilted downward from the waiting section 16 toward a holding table 14 where products are placed in bags. The device is provided with a loading portion 17 that can easily slide down toward the body, and a guide tongue piece 18 that extends above the holding table 14 from the loading portion 17. Preventive walls 19 are provided on both sides of the guide tongue l8 to prevent the products on the loading section 17 from sliding down onto the holding table 14. This work table 13. It is supported by a housing 20 extending from the base 1, and as shown in the second figure, an air passage 22 from a blower 21 is formed within the housing 20. The air supply path 22 is opened below the guide tongue l8.6 The holding table 14 has the following structure, as shown in FIGS.
It consists of a plate-shaped body 23 that is slightly sloped more steeply than the standby part 16, and has a number of holding holes 24 along the side edge located below the guide tongue piece 18. A holding plate 25 is disposed approximately at the center of the plate-like body 23 and extends across the width, and the holding plate 25 is attached to the plate-like body 23 so that its inclination angle can be changed. That is, as shown in the figure, the holding plate 25 is tilted more gently than the plate-shaped body 23, and is therefore held at an angle close to the horizontal direction. As a result, there is a difference in level between the holding plate 25 and the plate-shaped body 23.
Shape 5a. As shown in FIG. 2A and FIG.
It is pivoted at 27 and is constantly biased by a spring 28 in the upward and rotational directions. Incidentally, the plate-shaped body 23 is the inclined plate 2
6 through a slide rail 29 extending in the width direction, and the plate-like body 23 is slidable in the width direction along the rail. Furthermore, the plate-like body 23 has an inclined portion at the inclined portion below the step 25a of the holding plate 25. A guide plate 30 facing in an oblique direction is provided upright, and the guide plate 30 is provided with an adjustment portion 3l that can be adjusted and fixed in the width direction of the plate-shaped body 23. The guide device 115 is for guiding the bag loaded with the product on the holding table 14 onto the conveyor device 3, and in the illustrated example, the guide device 115 is a sliding device that slopes downward from the holding table 14 toward the conveyor device 3. Keep an eye on Route 32. Specifically, this sliding path 32 includes an extension 7a of the conveyance table 7 and a posture control plate 32 provided on a side edge of the extension 7a and extending along the lower edge of the holding table 14. That is, as shown in FIG. 2(A), the extension portion 7
The conveyor table 7 and conveyor device 3 including a. The lifting mechanism 12 holds the holding table at a steeper angle than the holding table 14, while the attitude control plate 32
is held at a gentler slope than the holding table 14. At this time, although not shown, it is preferable that the attitude control plate 32 be provided with a means for adjusting the inclination angle. (Structure of bending guide device) A bending guide device 33 is provided above or near the conveyor device 3 facing the slideway 32. Figures 1 and 2 (
In A), the bending guide device 33 has a regulating body 3 which will be described later.
From the impact plate 35 provided on the extension part 34a of 4. This abutment plate 35 is connected to the extension portion 34a via a wedge member 36.
The wedge member 3G faces the lower edge of the attitude control plate 32 of the sliding path 32, and the lower edge of the impact plate 35 is the intersection of the front surface of the extension portion 34a and the conveyor belt 6. 3 The angle is set to face 4b. Note that the abutting plate 35 is attached through a long hole 37 so that its vertical position can be adjusted freely. (Structure of Regulating Body) The regulating body 34 is made of a plate that stands upright along the inclined lower edge of the conveyor belt 6, and is supported by the frame 2 by a support rod 38. Preferably, the supporting loft 38 is adjustable and fixed to a bracket 39 fixed to the frame 2, and the regulating body 34 is connected to the conveyor belt 6.
It is said that it can be freely adjusted forward and backward in the width direction. More preferably, as shown in FIG. 2(B), a guide plate 40 is provided close to and parallel to the regulating body 34, and between the regulating body 34 and the guide plate 40 there is provided a conveyance path 41 of the header section, which will be described later. , and the starting end of the conveyance path 41 is made into an introduction part 42 that expands. The introduction part 42 faces the lower part of the abutting plate 35 from the side. (Bag control device summer arrangement) The bag control device 80 includes a sealing device 9 as shown in FIG.
It is placed above the belt conveyor 3 at the mid-way position before reaching the conveyor belt. This bag control device 80 opposes and interferes with the bag being transported to suppress the transport so as to make the bag stationary, but the side edge of the bag is locked by the transport locking body 6a and the bag is forced to be transported. When this happens, the above-mentioned suppression is canceled. It is passed through the bag as is. As shown in FIGS. 3 and 4, in the illustrated embodiment, a bag control device 80 is constructed by a flexible interference member 81 hanging down from above toward the conveyor belt 6.
This interference body 8I has an upper end 81a fixed to an arm 82 arranged in a transverse direction of the conveyor belt 6, and a free end 8lb of the lower end facing the upper surface of the conveyor belt 6 in the vicinity of the path of the conveyance locking body 6a. It is hanging down like this. The arm 82 is fixed by being attached to the extension part 34a of the regulating body 34 or by being attached to the frame 2. In the first embodiment shown in FIG. 4(A), the interference body 8
1 is. It consists of a thin rubber curtain plate and has elasticity. In the second embodiment shown in FIG. 4(B), the interference body 8
1 is made of a thin elastic curtain plate made of rubber. It has a slot-like shape with a slot or elongated notch 81c formed in the vertical direction. In the third embodiment shown in FIG. 4(C), the bag control device 80 has an interference body attached to the arm 82 in the same manner as described above.
1 hangs down, but the arm 82 is configured to be freely rotatable via a rotation shaft 82a. That is, when a bag that is conveyed while being disposed above the conveyor belt 6 and is conveyed while being engaged with the conveyance locking body 6a collides with the interference body 81, the rotating shaft 82a
The interfering body 81 can be rotated and retracted as shown by the arrow. (Construction of the sealing device) The sealing device 9 has a correction rail 43 provided on the conveyance table 7 and arranged parallel to the conveyance direction of the conveyor device 3.
It consists of a rotating body 44 that runs close to the correction rail 43 in synchronization with the conveyor device 3. Specifically, as shown in FIGS. 5 and 6, the correction rail 43 has both ends 43a and 43b in the longitudinal force direction inclined downward, and the intermediate portion 43C has a flat linear shape. On the other hand, the rotating body 44. It consists of an endless belt 47 wound between a driving pulley 45 and a driven booby 46. The feed side of the belt 47 is made to run parallel to and synchronously with the conveyor device 3 in the same direction. Thus, the correction rail 43 and the endless belt 47 are arranged so as to be out of phase with each other in a direction perpendicular to the conveying direction. As shown in FIG. 5, the correction rail 43 is connected to the conveyor device 3 with respect to the endless belt 47.
It is located nearby. (Structure of the sealing device) The sealing device 10 is attached to a stable feeding device 48 that stabilizes the bag during feeding of 8 liters. That is, Figures 5 and 6
As shown in the figure, the stable feeding device 48 has an upper rotating body 49.
and the lower rotating body 50. The upper rotating body 49 is. A pair of endless belts 5 wrapped around the driving pulley 45 of the sealing device 9 with the endless belt 47 interposed therebetween.
1a. Both bells 51a and 5lb are wound around a driven pulley 52 on the extension line of the endless belt 47. On the other hand, the lower rotating body 50. A pair of endless belts 53a arranged in parallel below the upper rotating body 49
, 53b, and both belts 53a, 53b are wound between the driving bobbin 54 and the driven bobbin 55. The upper and lower rotating bodies 49, 50 are synchronized with each other and with the conveyor device 3. each endless belt 5
1a. 5lb and 53a. The feed side of the conveyor 53b is close to the conveyor 3, and the conveyor 3 runs in the same direction as the conveyance direction of the conveyor device 3. As shown in FIGS. 5 and 6, the sealing device 10 is comprised of a disc-shaped rotary fusing blade 56, which is rotated clockwise by a rotary drive shaft 57. This rotary fusing blade 56
The periphery is a fused portion 58, and at least a portion near the periphery on the inner circumferential side of the fused portion is a fused portion 59. Although not shown, the rotary fusing blade 56 is heated by a heating means to maintain the fusing part 58 and the melting part 59 at a high temperature. At this time, the peripheral edge part including the fusing part 58 of the rotary fusing cutting blade 56 and/or the both side parts including the fusing part 59 are coated with tetrafluoride resin (
By coating with Teflon (trade name), gas generation can be suppressed when the green opening of the bag body is welded and welded, which will be described later, and the cut edge of the opening can be easily peeled off. still. As the fusing and welding means using the rotary fusing blade 56, in addition to the heat generated by the heating means, ultrasonic means may be freely employed. The rotary fusing blade 56 is disposed between the pair of boots I754.55 of the lower rotary body 50 mentioned above, and is connected to the endless belts 51a, 5l of the upper and lower rotary bodies 49.50, respectively.
b, 53a, and 53b on the feed side, and is arranged so that the melting part 59 is located between the upper and lower rotating bodies 49 and 50. still. In the illustrated example, as shown in FIG. 6, on the downstream side of the rotary fusing blade 56 in the conveying direction. Between the endless belts 51a and 5Ib and between the endless belts 53a and 53
A separation plate 60 is fixedly installed between (Structure of chip disposal device) As shown in Figure 1. A chip disposal device 6l is provided further downstream of the sealing device 10 and the stable feeding device 48 in the conveying direction. This chip disposal device 61 is equipped with a disposal path 62 opened on the conveyance table 7 and an exhaust duct 63 facing the disposal path 62, and the exhaust duct 63 is connected to the blower 6.
4 (Figure 2 (A)). [Function] To package products based on the apparatus of the above embodiment, first a large number of bags are placed on the holding table 14 of the working section 8. This bag 65 is a known one, and as shown in FIGS. 7 and 8, it is made of a plastic film and has an opening 66 at one end and a header 67 at the other end. As shown in FIG. 8, this header portion 67 is constructed by wrapping a relatively thick reinforcing piece 67a such as a weld line with a film.
It is enclosed in 7b. Furthermore, the bag body 65 is provided with a sealing part 68 that can be opened and closed freely via an adhesive 68a on the film part on the front and back sides, and a holding piece 69 is provided on the film part on the other side by extending from the diary. , a pair of holes 70 are provided in the holding piece 69. As shown in Figure 7, it is desirable to form notches 71a and 7lb on the periphery of the hole 70. Then, a large number of bags 65 are stacked and placed on the holding table 14, and a gate-shaped holder 72 is inserted into the hole 7o of the bag 65 and the holding hole 24 as shown in FIG. 2(B). It is held fixed by doing this. The holder 72 is located below the guide tongue piece 18 of the work table 13. At this time, the header part 67 of the stacked large number of bags 65 is particularly bulky, but as shown in FIG. Since the top layer bag body 65 is held in a flat state. Products to be loaded into the bag body 65, especially small products such as a razor for shaving, are stored on the work table 13, although not shown.
are stocked in the standby section 16. The required amount is placed on the loading section 17. When the blower 21 shown in FIG. 2(A) is operated, air is supplied from below the guide tongue piece 18, and the second
As shown in Figures (C) and 8, the uppermost layer bag 65 has a large opening 66. Therefore, in this state. By sliding the product down from the loading section 17 of the work table 13 along the guide tongue 18, the product can be easily loaded into the bag body 65. After loading the product, the worker holds the bag 65 and moves it to the step 25a.
When the bag 65 is pulled downward, the retaining piece 69 is torn off from the periphery of the hole 70 and separated from the retainer 72, and the header part 67 is separated from the retainer 72.
It slides to the top of the conveyor belt 6 via the slideway 32 with ! do. When the bag body 65 slides down, the guide plate 3
0 and the attitude control plate 32, it jumps toward the impact plate 35, and the header part 67 is hit by the impact plate 35 while descending due to the weight of the loaded product. Due to this impact, the held portion 67 bends upward using the weld line 67b as a hinge and falls. At the falling point, the bending fulcrum is located at the intersection 34b of the regulation plate extension 34a and the conveyor belt 6, and therefore the bent and erected header part 67 maintains its erected state along the regulation body extension 34a. It will be done. Since the belt conveyor 3 is in a driving state, the bag body 65 is conveyed as soon as it falls, and the header section 67 advances along the regulating body 34 during this conveyance. In case. If the standing posture of the header section 67 is insufficient. After the start of conveyance, the header section 67
When the header part 67 is introduced into the conveyance path 41 from the introduction part 42 shown in FIG. ．． Therefore, the bag body 65 has both side edges connected to the regulating plate 3.
The posture is maintained perpendicular to 4. By the way, when the bag 65 is dropped onto the conveyor belt 6, the side edges of the bag 65 are not necessarily aligned along the conveyance stopper 6a of the belt. For example, there are cases where the bag 65 is not parallel to the conveyance locking body 6a and is deviated, or a part of the bag 65 is placed astride the conveyance locking body 6a. The bag body 65 deviated in this way. During transport, the bags are aligned in the desired position and direction by the bag control device 80. That is, the bag control device 80 is shown in FIG. 4(A).
Alternatively, in an embodiment configured as shown in FIG. This interference body 81 suppresses conveyance so as to keep the bag stationary (FIG. 3(A)). During this suppression, the conveyor belt 6 continues to be driven in the conveying direction F. The bag body 65 is rubbed on the conveyor belt 6. After the conveyor locking body 6a retreats from the lower surface of the bag 65, it is completely placed on the conveyor belt 6 (FIG. 3(B)).Furthermore, as the conveyor belt 6 advances, it is stopped by the interference body 81. The next conveyance locking body 6a abuts and locks the rear side edge of the bag body 65 that has been tightened (FIG. 3(C)).As a result, the W body 65 follows the conveyor belt 6 and is forced into position. By receiving this forced conveying force, the interference body 81 is elastically deformed, and the bag body 65 passes below the elastically deformed interference body 81 (the third
Figure (C)). Incidentally, in an embodiment in which the conveyance control stop 80 is configured as shown in FIG.
5 will be allowed to pass. By the bag body control device 80 as described above, the side edge of the bag body 65 is made to lie along the conveyance locking body 6a, and the bag body 65 is caused to align with the conveyance locking body 6a.
are made to stand up in an orderly manner within the conveyance path 41. The bag body 65 conveyed by the belt conveyor 3 advances the opening edge on the conveyance table 7, and seals i! It reaches 9. Here, as shown in FIG. 9, the opening edge of the bag body 65 is supported between the correction rail 43 and the rotary body 44, and the opening edge is brought into close contact. The opening can be sealed horizontally. At this time, the bags 65 are aligned in advance along the conveyance locking body 6a by the bag control device as described above. The opening is sealed in a horizontal line shape so that it is perpendicular to the side edge of the bag body 65. Subsequently, the mouth edge of the bag body 65 reaches the stable feed device 48. The opening is kept sealed as described above, and it is advanced while being supported by the vertical rotating body 49.50.
It passes through the sealing device 10. At this time, since the bag 65 is placed along the transport stopper 6a as described above, it receives the rotary fusing blade 56 in a direction perpendicular to the side edge of the bag 65. Also. Since the header portion 67 of the bag body 65 is placed along the regulating body 34, as shown in FIG.
As a result, the distance L from the regulating body 34 to the rotary fusing blade 56 is set to a constant dimension based on the distance L from the welding line 67b. Furthermore, the fusing line is formed parallel to the welding line 67b. At the time of fusing, the opening edge of the bag body 65 is cut by the peripheral fusing part 58 of the fusing blade 56. Subsequently, the melted edge of the opening edge is rubbed by the melted part 59 and progresses.
The fused edge is sufficiently melted to form a lumpy molten resin adhesive portion 66a as shown in Figure 11. That is, the bag body 65 has a molten resin bonded part 66a in a straight line formed in a built-up shape on the welded part. The weld becomes extremely strong. After passing through the sealing device 10, the opening edge separated from the bag body 65 by passing through the separation plate 60 is fed while being sandwiched between one of the endless belts 5lb and 53b. The waste is disposed of in the waste channel 62. On the other hand, the sealed bag 65 is sent from the conveyance end of the conveyor device 3 to a separate packing table or the like. [Other embodiments] (Bending guide device) Regarding the bending guide device 33, the abutment plate 35 was shown above as a specific example, but instead of such a structure, the first
It is possible to construct the cam member 73 as shown in FIGS. 2 to 14. That is, for example, the cam member 73 is connected to the extension portion 34 of the regulating body 34.
a, and includes a support portion 74 that is substantially flush with the top surface of the conveyor belt 6, and a cam portion 75 that expands from the support portion 74 in the conveying direction, and is provided with a cam portion 75 that bulges out from the support portion 74 in the conveying direction. A receiving plate 76 is provided to prevent the header portion 67 from protruding beyond the support portion 74. Then. According to this embodiment, the bag body 65 transferred from the holding table 14 to the belt conveyor 3 is moved from the heft section 67 to the support section 74.
After being supported by the header 67, the header portion 67 is gradually bent and raised by the cam portion 75 as it is transported, and thereafter the erected header portion is transported along the regulating body 34.
Therefore, in the case of this embodiment, there is no need for the guide device 15 provided alongside the slideway 32 as in the above embodiment.
Simply move the bag 65 from the holding table 14 to the support 74.
It doesn't matter what it is as long as it is a means of moving. (Regulating body) Regarding the regulating body 34, in the above embodiment, a plate provided on the frame 2 side was shown. For example, a continuous flange-shaped upright wall may be provided around the conveyor belt 6, and the bent header portion 67 may be held and restricted by this upright wall. In the example shown in the above figure, the conveyance path 41 of the header portion is configured by the guide plate 40 provided along the regulating body 34, but it is possible to configure the conveyance path 41 of the header section without providing such a guide plate 40. Of course, the regulating body 34 may be used alone to form a conveyance path on which the header portion slides. (Bag body control device) In the above embodiment, the bag body control device 80 provides a kind of resistance to the bag body 65 being conveyed, and the resistance is caused by the conveyance locking body 6a.
We proposed a type that would allow the bag 65 to pass by overcoming the forced conveyance force of the bag 65 based on the
After applying a restraining force to the bag body 65 in the conveying direction, the restraining force may be released upon detecting that the bag body 65 is locked to the conveyance locking body 6a. ．．
For example, when the bag body 65 is restrained by the interference body 81 and its position is corrected so that it becomes parallel to the conveyance stopper body 6a, the corrected position is detected by a phototube or the like, and a detection signal is sent to the interference body 65.
1 may be moved away from the conveyor belt 6 using a motor or the like. [Effects of the Invention] According to the present invention as set forth in claim 1 or 3, when a bag loaded with products is transported by a conveyor and the opening edge is welded by a sealing device, the opening edge is welded in advance by fusing. This is because the position of the bag is first adjusted so that it is positioned along the conveyance stopper of the belt conveyor. The bag body can be held in a predetermined posture using the conveyance locking body as a positioning means, and this has the effect that the welding line by the sealing device can be performed on the planned desired line of the bag opening edge. be. According to the present invention as set forth in claim 2, the bag control device can be manufactured extremely simply and at low cost, and has the advantage of being easy to implement.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing one embodiment of the device of the present invention, and FIG.
Figure (A) is a longitudinal cross-sectional side view showing the working part, guide device, and folding guide device, Figure 2 (B) is a plan view showing the bag body control device in addition to the device, and Figure 2 (C) is A vertical side view showing the same operating state. 3(A), 3(B), and 3(C) are vertical sectional views showing the operation based on the first embodiment of the bag body control device, and FIG. 4(A) is a perspective view showing the first embodiment of the bag body control device. Figure 4 (B) is the same
4(C) is a perspective view showing the third embodiment, FIG. 5 is a plan view showing the sealing device and the sealing device, and FIG. 6 is the VI-Vl of FIG. A line sectional view, FIG. 7 is a plan view of the bag used in the present invention, FIG. 8 is a longitudinal sectional view showing the bag when loading products, and FIG. 9 is a cross-sectional view showing the bag when it passes through the sealing device. 10 is a vertical sectional view showing the bag as it passes through the stable feeding device and the sealing device, FIG. 11 is an enlarged sectional view showing the sealing part of the bag, and FIG. A plan view showing another embodiment, FIG. 13 is xm-xm of FIG. 12.
The line sectional view and FIG. 14 are front views showing the cam member of the same embodiment. 3... Belt conveyor, 6... Conveyor belt, 6
a...Transportation locking body, 9...Sealing device, 10...Sealing device, 13...Working table. 14... Holding table, 15... Guide device, 65... Bag body. 66・
··Aperture. 6 7... Header part, 6 9... Holding piece. 8 0... Bag control device, 8 1... Interfering body. October 15, 1990

Claims (1)

[Scope of Claims] 1. A guide device that allows a bag loaded with products to slide down, a belt conveyor that receives, places, and conveys the dropped bag, and welds the opening edge of the bag while it is being conveyed by the belt conveyor. The belt conveyor includes conveyance locking bodies that abut the side edges of the bags and lock them in the conveyance direction, projecting at intervals in the longitudinal direction of the belt, and reaching the sealing device. The conveyance is restrained by interfering with the bag being conveyed above the belt conveyor at the previous conveyance position and keeping the bag stationary, but the forced conveyance force of the bag that comes into contact with the conveyance stopper A product packaging device comprising: a bag control device that releases the suppression when the product is in contact with the user. 2. The product packaging device according to claim 1, wherein the bag control device comprises a flexible interference body suspended from above toward the belt conveyor. 3. Equipped with a guide device that slides down the bag loaded with products, a belt conveyor that receives, places, and conveys the bag that has been slid down, and a sealing device that welds the opening edge of the bag while being conveyed by the belt conveyor. : The belt conveyor is comprised of conveyance locking bodies that abut against the side edges of the bags and lock in the conveyance direction, projecting at intervals in the belt longitudinal direction: Conveyance of the bags before reaching the sealing device A bag body control device is provided on the path, facing the conveyance direction, for applying a restraining force to the bag body, and for detecting that the bag body is locked to the conveyance locking body and releasing the restraining force. A product packaging device characterized by: