JPH07102852B2 - Bag opening device - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag opening device for inserting contents, especially rubber veils into a bag.

2. Description of the Related Art As a conventional bag opening device, for example, there is one shown in Japanese Patent Laid-Open No. 62-208328. That is, in order to store a plurality of small sachets of rice in units of several kilograms in an outer bag, the opening of the outer bag is pulled from above and below by a suction plate so that the guide plate enters the opening.
The pouch is pressed from the opening of the outer bag to the bottom, and is packed in the bag along the guide plate. Thus, the pouch is pushed smoothly without hitting the opening of the outer bag.

In the conventional bag opening device, since the outer bag is always opened to a constant size, the contents having a substantially constant size such as a fixed number of rice pouches. Suitable for packing. However,
When packing contents such as rubber veils whose vertical and horizontal dimensions are not uniform, hit the opening of the bag depending on the dimensions,
Some things could not be packed in the bag. in this case,
Even if the length around the opening of the bag is constant, it can be inserted by changing the dimensional ratio of the opening in the up-down direction and the width direction, but in the conventional bag opening device, the outer bag is always fixed. Since the size is opened, there is a problem in that it is not possible to pack contents whose vertical and horizontal dimensions are not constant. The present invention has been made by paying attention to the problems of the conventional technique. Even if the contents have different vertical and horizontal dimensions, the opening of the bag is opened and packed according to the dimensions. It is an object of the present invention to provide a bag opening device that can be used.

Means for Solving the Problems The gist of the present invention for achieving such an object is as follows: 1 In a bag opening device for inserting contents into a bag,
A length detection device for the contents, a width detection device for the contents, an expansion member for the bag, a vertical expansion drive mechanism for the bag, and a width expansion drive mechanism for the bag, and the length The detection device has a configuration for detecting the vertical length of the content,
The width detection device has a configuration for detecting the lateral width of the content, and the expansion member has an upper guide, a lower guide, and four corner guides, and each guide overlaps with an adjacent guide to form a rectangular shape. The vertical expansion drive mechanism is capable of opening and closing the upper guide, the lower guide, and the four corner guides of the expansion member in the vertical direction, depending on the detection length of the length detection device. By a predetermined distance, the longer the length in the vertical direction, the more difficult it is to insert the bag into the bag.In order to make it easier to insert the contents into the bag, the guides are opened outward in the vertical direction. The four corner guides of the expansion member can be opened and closed in the lateral width direction, and each corner guide is opened outward in the lateral width direction by a predetermined distance according to the detection width of the width detection device. Bag opening device. 2. The bag opening device according to claim 1, wherein the vertical expansion drive mechanism has a switching means capable of adjusting the vertical position of the upper guide of the expansion member. 3 has a transport device, the transport device is configured to sequentially transport the contents along a transport path, the length detection device, a stop plate, a transport stop sensor, a positioning means, A configuration having a rear contact means and a rear position sensor, wherein the stop plate is located in front of the transport path, and the transport stop sensor detects that the contents have contacted the stop plate. And the positioning means has a configuration for positioning the rear contact means to the rear of the contents in response to the detection of the conveyance stop sensor, and the rear contact means contacts the stop plate. A structure for contacting the rear portion of the content, wherein the rear position sensor detects whether or not the position of the rear contact means contacting the rear portion of the content is within a predetermined length range. The width detection device has one side contact means and one side stop sensor. A side contact means, and a width position sensor. The one side contact means has a configuration of contacting one side surface of the content, and the one stop sensor is the one side The contact means has a configuration for detecting contact with the content, and the other side contact means has a configuration for contacting the other side surface of the content in response to detection by the one stop sensor. However, the width position sensor has a configuration for detecting whether or not the position of the other-side contact means that contacts the other side surface of the content is within a predetermined width range, and the vertical expansion drive mechanism is When the rear position sensor of the length detection device detects that it is within a predetermined length range, the upper guide of the expansion member has a smaller size of the two stages. And open the lower guide and the four corner guides outward in the vertical direction, When the rear position sensor of the detection device detects that the rear position sensor is out of the predetermined length range, the upper guide, the lower guide, and the four corner guides of the expansion member are moved in the vertical direction in a larger stage of the two stages. With a configuration that opens outward, the width expansion drive mechanism,
When the width position sensor of the width detecting device detects that the width position sensor is within a predetermined width range, the four angle guides of the expansion member are moved in the smaller one of the two steps. When the width position sensor of the width detecting device detects that the width position sensor is outside the predetermined width range, the four corner guides of the expansion member are moved outward in the lateral width direction in a larger step of the two steps. The bag opening device according to item 1 or 2 is characterized in that it has an opening configuration.

When the contents are packed in the bag, first, the length detecting device and the width detecting device detect the size of the contents.
The length detection device detects the vertical length of the content to be inserted into the bag, and the width detection device detects the horizontal width of the content. Next, the expansion member is inserted into the opening of the bag. The vertical expansion drive mechanism opens the upper guide, the lower guide, and the four corner guides of the expansion member outward in the vertical direction by a predetermined distance according to the detection length of the length detection device. The width expansion drive mechanism opens the four corner guides of the expansion member outward in the lateral width direction by a predetermined distance according to the detection width of the width detection device. In this way, the opening of the bag is opened in the up-down direction and the lateral width direction according to the size of the contents, and guides the contents. When the vertical expansion drive mechanism has a switching means, the vertical position of the upper guide of the expansion member can be adjusted to match the gusset size of the bag. In the case of having a transport device, the transport device sequentially transports the contents along the transport path, and when the content hits the stop plate of the length detection device, the transport stop sensor detects that the transport stop sensor is in contact. Next, the positioning means positions the rear contact means behind the contents in response to the detection of the conveyance stop sensor,
The rear contact means contacts the rear of the contents. The rear position sensor detects whether or not the position of the rear contact means that contacts the rear of the contents is within a predetermined length range. The one side contact means of the width detecting device contacts one side surface of the contents, while the stop sensor detects that the one side contact means contacts the contents. Next, the other side contact means contacts the other side surface of the content in response to the detection of the one stop sensor. The width position sensor detects whether or not the position of the other side contact means that contacts the other side surface of the content is within a predetermined width range. When the rear position sensor of the length detection device detects that the rear position sensor is within the predetermined length range, the vertical expansion drive mechanism has four upper and lower guides of the expansion member at a smaller stage of the two large and small operation positions. Open the corner guide and outward in the vertical direction. The vertical expansion drive mechanism detects that the rear position sensor of the length detection device is out of the predetermined length range, and in the larger stage of the two stages,
Open the expansion member to the outside in the vertical direction. When the width position sensor of the width detection device detects that the width position sensor is within the predetermined width range, the width expansion drive mechanism opens the four corner guides of the expansion member laterally outward at the smaller of two large and small operation positions. . When the width position sensor of the width detection device detects that the width position sensor is out of the predetermined width range, the width expansion drive mechanism opens the expansion member outward in the lateral width direction in the larger of the two steps. In this way, the bag can be sequentially opened in the vertical and horizontal directions in two steps according to the size of the contents to be conveyed, and the contents can be guided.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIGS. 1 and 2, the bag opening device 10 is a device for inserting a content 11 such as a rubber bale into a bag 12. The bag opening device 10 includes a carrying device 20 and a length detecting device 30.
The width detection device 40, the expansion member 50, the vertical expansion drive mechanism 60a, the width expansion drive mechanism 60b, and the control unit 70. As shown in FIG. 2, the transport device 20 is configured by arranging rollers 21 at a constant interval in a transport path,
It is a conveyor that sequentially conveys the contents 11 along a conveyance path. The length detection device 30 detects the length in the vertical direction, which is the conveyance direction of the content 11, as a non-standard detection means 31, a stop plate 32, a conveyance stop sensor 33, a positioning means 34, and a rear portion. It has a contact means 35 and a rear position sensor 36. The non-standard detection means 31 is used for the contents 1
1 has a roller 31a that rolls along the upper surface of 1 and a proximity switch 31b, and detects the fluctuation of the roller 31a by the proximity switch 31b to know whether the conveyed contents 11 are out of specification. Is able to. The stop plate 32 is lowered by the stop cylinder 32a and is positioned in front of the transfer path to stop the contents 11 to be transferred. The conveyance stop sensor 33 is used for the contents 1
It is configured to detect that 1 has contacted the stop plate 32. As shown in FIG. 3, the positioning means 34 has an elevating cylinder 34a, and the elevating cylinder 34a includes the rod 3
A rear contact means 35 is attached to the tip of 4b. The elevating cylinder 34 a has a configuration in which the rear contact means 35 is lowered in accordance with the detection of the conveyance stop sensor 33 and is positioned behind the contents 11. The rear abutment means 35 has a reciprocating cylinder 35a, and the abutment plate 35c is attached to the tip of a rod 35b of the reciprocating cylinder 35a. The backing plate 35c has a detection metal fitting 35d attached to its rear portion. The rear contact means 35 is
The backing plate 35c is attached to the rear portion of the content 11 that is in contact with the stop plate 32.
Has a structure for abutting. The rear position sensor 36 is
A structure is provided for detecting whether or not the position of the rear contact means 35 contacting the rear part of the contents 11 is within a predetermined length range, depending on whether or not the detection fitting 35d can be detected. There is. As shown in FIG. 4, the width detection device 40 has one side contact means 41, one stop sensor (not shown), the other side contact means 43, and a width position sensor 44.
The one side contact means 41 includes the contact cylinder 41a and the contact plate 4.
1b and. The contact cylinder 41a is provided with the contact plate 4
1b is configured to abut one side surface of the contents 11. On the other hand, the stop sensor has a configuration for detecting that the one side contact means 41 has contacted the contents 11. The other side contact means 43 includes a contact cylinder 43a and a contact plate 43b.
And have. The other side contact means 43 has a structure in which the contact plate 43b contacts the other side surface of the contents 11 in response to the detection of the one stop sensor. The width position sensor 44 is
The other side contact means 43 contacting the other side surface of the contents 11
It is configured to detect whether or not the position of is within a predetermined width range. In this way, the width detecting device 40 detects the width of the contents 11. As shown in FIGS. 1 and 5, the expansion member 50 includes an upper guide 51, a lower guide 52, and a lower guide 52.
It has one corner guide 53a, 53b, 53c, 53d. The expansion member 50 includes the guides 51, 52, 43a.
.About.53d overlap with the adjacent guides to form a rectangular shape. The pair of upper and lower expansion cylinders 61, 62 constitutes a vertical expansion drive mechanism 60a and a width expansion drive mechanism 60b. The ends of the cylinders 61 and 62 are attached to the guide shaft 23 via a lever 63. Each guide 5
1, 52, 43a to 53d are attached to the guide shaft 23 via a shaft supporter 64 and a bearing 65. As shown in FIG. 9, the vertical expansion drive mechanism 60a includes rods 61a and 62 of the pair of expansion cylinders 61 and 62, which are vertically arranged.
By expanding and contracting a, the upper guide 51, the lower guide 52, and the four corner guides 53a to 53d of the expansion member 50 can be opened and closed in the vertical direction, and only a predetermined distance corresponding to the detection length of the length detection device 30. , Each guide is opened outward in the vertical direction. Therefore, the vertical expansion drive mechanism 60a has two large and small operation positions, and when the rear position sensor 36 of the length detection device 30 detects that it is within the predetermined length range,
The upper guide 5 of the expansion member 50 at the smaller stage of the two stages.
When the rear position sensor 36 of the length detecting device 30 detects that the rear position sensor 36 is outside the predetermined length range by opening the first and lower guides 52 and the four corner guides 53a to 53d outward in the vertical direction, the larger one of the two steps is performed. Thus, the upper guide 51, the lower guide 52, and the four corner guides 53a to 53d of the expansion member 50 are opened outward in the vertical direction. Vertical expansion drive mechanism 60
The a has switching means 67. The switching means has an elevating cylinder 67a. Rod 6 of lifting cylinder 67a
7b is connected to the mounting frame 54, and as shown in FIG.
The vertical position of the upper guide 51 of the expansion member 50 can be adjusted between the heights a and b by the expansion and contraction of 67b. As shown in FIG. 6, the width expansion drive mechanism 60b can open and close the four corner guides 53a to 53d of the expansion member 50 in the lateral width direction by expanding and contracting the rods 61a and 62a of the pair of upper and lower expansion cylinders 61 and 62. Therefore, the corner guides 53a to 53d are configured to open outward in the lateral width direction by a predetermined distance according to the detection width of the width detection device 40. The width extension drive mechanism 60b is biased by a spring 66 to close each guide, as shown in FIG. The upper guide 51 is set on the guide shaft 23 by a member 64 and operates together with the guide shaft 23. The corner guides 53a to 53d are set on the guide shaft 23 by a member 65 having a fulcrum, and are operated in the same direction as the upper guide 51 and the lower guide 52. Therefore, the width expansion drive mechanism 60b has two large and small operation positions, and when the width position sensor 44 of the width detection device 40 detects that the width position sensor 44 is within the predetermined width range, the width expansion drive mechanism 60b is expanded in the smaller of the two phases. When the four corner guides 53a to 53d of the member 50 are opened to the outside in the width direction and the width position sensor 44 of the width detection device 40 detects that the width position sensor 44 is outside the predetermined width range, the expansion member 50 of the expansion member 50 is selected at a larger stage of two stages. Four corner guides 53a to 53
The d is opened outward in the width direction. By the vertical expansion drive mechanism 60a and the width expansion drive mechanism 60b, each of the guides 51, 52, 43a to 53d can be expanded or contracted at the tip side as shown in FIG. The control unit 70 is configured to control the operations of the transport device 20, the length detection device 30, the width detection device 40, and the expansion cylinders 61 and 62. Next, the operation will be described. 2 and 3, when the contents 11 are packed in the bag 12,
Since the dimensions of the contents 11 such as the rubber veil are not constant and vary, first, the dimensions of the contents 11 are detected by the nonstandard detection means 31, the length detection device 30, and the width detection device 40. As shown in FIG. 11, the rubber bale of the contents 11 is carried in by the depalletizer, and the switch is turned on to detect the height of the contents 11 (steps 75, 76,
77). As shown in FIG. 2, the roller 31a is rolled along the upper surface of the contents 11, and the vertical movement of the rollers 31a is detected by the proximity switch 31b to detect whether the conveyed contents 11 are out of the standard or not. (Steps 78, 79, 8
0). When the roller 21 of the transport device 20 rolls, the content 11 is sequentially transported along the transport path, and when the content 11 hits the stop plate 32 of the length detection device 30, the transport stop sensor 33 contacts. It is detected (step 82). Next, the lifting cylinder 34a of the positioning means 34
Is the rear contact means 35 according to the detection of the conveyance stop sensor 33.
Is moved down and positioned behind the contents 11, and the reciprocating cylinder 35a of the rear contact means 35 causes the backing plate 35c to move to the contents 1.
1 to the rear part (steps 83 and 87). The rear position sensor 36 detects whether or not the position of the rear contact means 35 contacting the rear part of the contents 11 is within a predetermined length range, depending on whether or not the detection fitting 35d can be detected. To do. In this way, the length detection device 30 detects the length in the vertical direction of the contents 11 to be inserted into the bag (step 8).
8, 89). As shown in FIG. 4, the one side contact means 41 of the width detection device 40 is provided on one side surface of the contents 11 with the contact plate 4
1b is abutted, while the stop sensor is the one side abutting means 41.
Detects that the object abuts the contents 11 (step 8)
4,85). Next, the other side contact means 43 contacts the contact plate 43b with the other side surface of the contents 11 in response to the detection of the one stop sensor (step 86). Width position sensor 44
Detects whether the position of the other side contact means 43 contacting the other side surface of the contents 11 is within the predetermined width range (steps 87, 90). In this way, the width detection device 40 detects the width of the content 11. If the vertical position of the expansion member 50, the length of the contents 11 in the vertical direction, the width of the contents 11 and the like are out of the specified range, overflow is caused (step 9).
4). Next, the expansion member 50 is inserted into the opening of the bag (steps 91, 92, 93). At this time, as shown in FIG. 10, the mounting frame 54 is moved by the lifting cylinder 67a of the switching means.
The guide shaft 23 and the upper guide 5
1, the corner guides 53a and 53b can be pulled up, and the vertical position of the upper guide 51 of the expansion member 50 can be adjusted to match the bag gusset dimension 12a. Vertical expansion drive mechanism 60
The expansion cylinders 61 and 62 that constitute a are configured such that the upper guide 51 of the expansion member 50 is separated by a predetermined distance according to the detection length of the length detection device 30 via the lever 63 and the guide shaft 23.
The lower guide 52 and the four corner guides 53a to 53d are opened outward in the vertical direction. That is, as shown in FIG. 9, when the expansion cylinders 61 and 62 detect that the rear position sensor 36 of the length detection device 30 is within a predetermined length range, the expansion cylinders 61 and 62 extend the rods 61a and 62a to make them large and small. At a small stage in the operating position, the upper guide 51, the lower guide 52, and the four corner guides 53a to 53d of the expansion member 50 are opened outward in the vertical direction. The extension cylinders 61 and 62 are the length detecting device 3
When the rear position sensor 36 of 0 detects that it is out of the predetermined length range, the rods 61a and 62a are retracted, and the expansion member 50 is opened to the outer side in the up-down direction at the larger stage of the two stages.
At the same time, the expansion cylinder 6 that constitutes the width expansion drive mechanism 60b
1, 62 open the four corner guides 53a to 53d of the expansion member 50 outward in the lateral width direction by a predetermined distance corresponding to the detection width of the width detection device 40. That is, as shown in FIG. 6, when the width expansion drive mechanism 60b detects that the width position sensor 44 of the width detection device 40 is within the predetermined width range, the width expansion drive mechanism 60b expands at a smaller stage of the large and small operation positions. The four corner guides 53a to 53d of the member 50 are opened outward in the lateral width direction. The width expansion drive mechanism 60b includes the width position sensor 44 of the width detection device 40.
Is detected to be outside the predetermined width range, the expansion member 50 is opened outward in the lateral width direction in a larger step of the two steps. In this way, the opening of the bag has the contents 1 in the vertical direction and the width direction.
The contents 11 are opened so that the contents 11 can be easily inserted, and the contents 11 are guided inside. After the guidance, it returns to the original state, and according to the dimensions of the contents 11 to be sequentially conveyed,
The bag 11 can be opened in the vertical and horizontal directions in two steps, large and small, to guide the contents 11. In this way, the length detection device 30 and the width detection device 40 detect the size of the contents 11, and the vertical extension drive mechanism 60 is detected according to the detected size.
Since the a and the width expansion drive mechanism 60b can open the opening of the bag by the expansion member 50, the contents 1 whose lengthwise length and widthwise length are not constant like a rubber veil.
Even if it is 1, the opening of the bag 12 can be opened according to the size, and the contents 11 can be smoothly guided and packed inside. In the above embodiment, the expansion member is opened and closed stepwise by the vertical expansion drive mechanism and the width expansion drive mechanism, but it may be opened and closed in a continuous size according to the size. .

According to the bag opening device of the present invention, the length detection device and the width detection device detect the size of the contents, and the vertical expansion drive mechanism and the width expansion drive mechanism are expanded according to the detected sizes. Since the opening of the bag can be opened by the member, even if the content is not uniform in the vertical and horizontal dimensions,
The opening of the bag can be opened according to the size, and the contents can be smoothly guided into the inside and packed. When the vertical expansion drive mechanism has the switching means, the vertical position of the upper guide of the expansion member can be adjusted, so that it can be applied to bags of various sizes according to the gusset size of the bag. In the case of having a carrying device, the size of the contents sequentially carried by the carrying device is detected, and the bag is moved up and down in two stages of large and small by the vertical expansion drive mechanism and the width expansion drive mechanism according to the size of the contents. Suitable for large-scale processing because it can be opened in the width direction.

[Brief description of drawings]

FIG. 1 is a front view showing a bag opening device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a length detection device of a bag opening device according to an embodiment of the present invention.

FIG. 3 is a front view showing the length detection device of the bag opening device according to the embodiment of the present invention.

FIG. 4 is a side view showing the length detection device of the bag opening device according to the embodiment of the present invention.

FIG. 5 is a side view showing a bag opening device according to an embodiment of the present invention.

FIG. 6 is a plan view showing a bag opening device according to an embodiment of the present invention.

FIG. 7 is a perspective view showing an expansion member of the bag opening device according to the embodiment of the present invention.

FIG. 8 is a side view showing the operation of the expansion member of the bag opening device according to the embodiment of the present invention.

FIG. 9 is a front view showing the operation of the bag opening device according to the embodiment of the present invention.

FIG. 10 is a front view showing a schematic configuration of a switching means of the bag opening device according to the embodiment of the present invention.

FIG. 11 is a flowchart showing the operation of the length detection device of the bag opening device according to the embodiment of the present invention.

[Explanation of symbols]

 10 ... Bag opening device 11 ... Contents 12 ... Bag 20 ... Conveying device 30 ... Length detection device 40 ... Width detection device 50 ... Expansion member 51 ... Upper guide 52 ... Lower guide 53a, 53b, 53c, 53d ... Corner guide 60a ... Vertical expansion drive mechanism 60b ... Width expansion drive mechanism 61, 62 ... Expansion cylinder

Claims (3)

[Claims] 1. A bag opening device for inserting contents into a bag, wherein a length detecting device for the contents, a width detecting device for the contents, an expansion member for the bag, and a vertical expansion for the bag. A drive mechanism and a width expansion drive mechanism for the bag , wherein the length detection device has a configuration for detecting a longitudinal length of the content, and the width detection device is a lateral direction of the content. The expansion member has an upper guide, a lower guide, and four corner guides, and each guide overlaps with an adjacent guide to form a rectangular shape. The upper guide, the lower guide, and the four corner guides of the expansion member can be opened and closed in the vertical direction , and the vertical length is a predetermined distance according to the detection length of the length detection device. The longer it is, the harder it is to insert it in the bag
On each guide comprising contents to facilitate insertion into the bag
The width extension drive mechanism is capable of opening and closing the four corner guides of the extension member in the lateral width direction, and has a configuration of opening outward in the downward direction, and only by a predetermined distance according to the detection width of the width detection device. A bag opening device having a configuration in which each corner guide is opened outward in the lateral width direction . 2. The bag opening device according to claim 1, wherein the vertical expansion drive mechanism has a switching means capable of adjusting the vertical position of the upper guide of the expansion member. 3. A transport device, said transport device having a structure for sequentially transporting said contents along a transport path, said length detecting device comprising a stop plate, a transport stop sensor, A positioning unit, a rear contacting unit, and a rear position sensor, wherein the stop plate is located in front of the transport path, and the transport stop sensor is configured such that the contents contact the stop plate. The positioning means has a structure for positioning the rear contact means behind the contents in response to the detection of the conveyance stop sensor, and the rear contact means includes the stop plate. The rear position sensor detects whether the position of the rear contact means contacting the rear part of the content is within a predetermined length range. The width detection device has one side contact means, One side stop sensor, the other side contact means, and the width position sensor, the one side contact means has a configuration to contact one side surface of the contents, the one stop sensor, A configuration in which one side contact means detects that the content contacts the content, and the other side contact means contacts the other side surface of the content in response to detection by the one stop sensor. And the width position sensor has a configuration for detecting whether or not the position of the other side contacting means contacting the other side surface of the content is within a predetermined width range, the vertical expansion drive The mechanism has two large and small operating positions, and when the rear position sensor of the length detecting device detects that the rear position sensor is within a predetermined length range, at a smaller stage of the two stages, the expansion member is The upper guide, the lower guide, and the four corner guides are placed outside in the vertical direction. When the rear position sensor of the length detecting device detects that the rear position sensor is out of the predetermined length range, the upper guide, the lower guide, and the four corners of the expansion member may be selected in a larger stage of the two stages. A guide and a structure for opening to the outside in the vertical direction, the width expansion drive mechanism has a large and small two-stage operation position
When the width position sensor of the width detecting device detects that the width position sensor is within a predetermined width range, the four corner guides of the expansion member are opened outward in the width direction in a smaller step of the two steps,
When the width position sensor of the width detection device detects that the width position sensor is out of a predetermined width range, the four corner guides of the expansion member may be opened outward in the lateral width direction at a larger stage of the two stages. The bag opening device according to claim 1 or 2.