TWI813303B - Method and apparatus for unfolding a wafer packaging bag - Google Patents

Abstract

The present invention disclosed a method and apparatus for unfolding a wafer packaging bag. An upper section and a lower section of the wafer packaging bag are stacked together. The present invention uses a bag unfolding platform of the apparatus to suck the lower section of the wafer packaging bag, and an unfolding device of the apparatus to suck the upper section of the wafer packaging bag, and subsequently separates the unfolding platform that sucks the lower section of the wafer packaging bag from the unfolding device that sucks the upper section of the wafer packacing bag, so that the upper section and the lower sections are separated. When the upper and lower sections of the wafer packaging bag are separated to a fully open distance, the wafer packaging bag forms an accommodating space for an article to be pushed in.

Description

Bag unfolding method and bag unfolding equipment for unfolding a packaging bag

The present invention relates to a packaging bag for packaging a wafer box, and in particular, to a bag unfolding method and bag unfolding equipment for unfolding the packaging bag.

The semiconductor industry often uses wafer boxes to load wafers. For example, front opening unified pods (FOUP) can protect wafers during transportation within the factory, and front opening shipping boxes (FOSB) ) loading wafers protects the wafers during transportation between fabs. During the transportation process, each wafer box is usually packed in a special packaging bag to form a packaging body in order to prevent dust from the external environment from entering the interior and causing contamination and affecting the yield. Currently, the special packaging bags include aluminum bags, anti-static bags, plastic bags, etc., with different characteristics and can be determined according to the needs. For example, the plastic bags used in 12-inch wafer boxes are made of harder materials, while those used in 8-inch wafer boxes The plastic bag used in the box is made of soft material.

In any case, this type of special packaging bag is originally flat, and it must be unfolded to push a wafer box into its interior. Therefore, how to unfold the special packaging bag is an issue that needs to be solved urgently.

The invention provides a bag unfolding method for unfolding a packaging bag. The packaging bag includes a sealed bag bottom, an unsealed bag mouth, and a bag body located between the bag bottom and the bag mouth. The bag body includes an upper bag piece and a lower bag piece that are overlapped together. and two side bag pieces between the upper and lower bag pieces. The bag display method includes: moving the packaging bag to a bag display platform; sucking the lower bag piece of the packaging bag by one or more vacuum nozzles of the bag display platform, and sucking the lower bag piece of the packaging bag by one or more vacuum suction nozzles of the bag display device. A vacuum nozzle sucks the upper bag piece of the packaging bag; and the bag display platform that sucks the lower bag piece is separated from the bag display device that sucks the upper bag piece by a certain distance, so that the packaging bag The upper bag piece and the lower bag piece are separated.

The invention also provides a bag display device for unfolding the above-mentioned packaging bag, which includes a bag display platform for placing the packaging bag and a bag display device located above the bag display platform, wherein the bag display platform includes a bag display device for placing the packaging bag. One or more vacuum nozzles that suck or release the lower bag piece, the bag display device includes one or more vacuum nozzles that suck or release the upper bag piece, and suck the lower bag piece. The bag display platform and the bag display device that absorbs the upper bag piece can be relatively separated, so that the overlapped upper and lower bag pieces can be separated accordingly.

1: Packing bag

10:Items

11:Bag bottom

12: Bag mouth

120: Accommodation space

13: Bag body

131: Bagging piece

132:Lower bag piece

133, 134: Side pockets

131a, 132a, 133a, 134a: front section area

131b, 132b, 133b, 134b: rear area

2: Exhibition bag platform

201: leading edge

202: Trailing edge

21: Vacuum nozzle

22: Lower jaw

3: Bag display device

31:Front display bag module

310:Lifting drive mechanism

310a, 310b: Main lifting slide

312: Front vacuum nozzle

312a, 312b: Bracket

313: Upper clamping jaw

314: Auxiliary lifting slide

315: Telescopic slide

32: Rear display bag module

321:Rear vacuum nozzle

322: Upper clamping jaw

323:Lift drive slide

323a:Frame

324: Lateral transfer mechanism

325:Lifting slide

326:Mobile slide

327: Elastic pressure block

331: Upper pressure head

332: Lower pressure head

5: Positioning platform

51: Positioning plate

6: Bag holding module

61: Push plate

62:Push plate driving mechanism

621: First transmission mechanism

622: Second transmission mechanism

623:Third transmission mechanism

7: Withholding module

71:Lifting slide

72: Rotary drive device

73:Withholding plate

Figure 1 shows a schematic top plan view of a preferred embodiment of the bag unfolding equipment of the present invention.

FIG. 2 shows a schematic view of the appearance of an article 10 to be packaged and a packaging bag 1 used to package the article 10 .

Figure 3 shows a schematic three-dimensional appearance of a front bag unfolding module 31 of a bag unfolding device 3 according to the preferred embodiment of the present invention.

Figure 4 shows a schematic three-dimensional appearance of a rear bag display module 32 of the bag display device 3 according to the preferred embodiment of the present invention.

Figures 5 and 6 show schematic views (top view and front view) of the front bag development module 31 and the rear bag development module 32 absorbing the packaging bag 1 on a bag development platform 2 according to the present invention.

Figure 7 shows a schematic front view of the bag display device 3 and the bag display platform 2 of the present invention when they are separated.

Figure 8 shows a schematic three-dimensional appearance of the packaging bag 1 when it is unfolded to a fully unfolded state according to the preferred embodiment of the present invention.

FIG. 9 shows a schematic diagram of the bag moving action when the rear bag unfolding module 32 is used as a bag moving device according to the present invention.

Figure 10 shows a partial three-dimensional schematic view of a positioning platform 5 used to position the packaging bag 1 in the preferred embodiment of the present invention.

Figures 11 to 13 show schematic diagrams of unfolding the packaging bag 1 according to the preferred embodiment of the present invention.

Figure 14 shows a schematic three-dimensional appearance of a bag-holding module 6 according to this preferred embodiment of the present invention.

Figures 15 to 18 show schematic diagrams of the operation of the bag-expanding module 6.

Figure 19 is a schematic three-dimensional appearance diagram of a crimping module 7 according to the preferred embodiment of the present invention.

Figure 20 is a three-dimensional exploded schematic view of the crimping module 7 of the present invention.

Figure 21 is a schematic diagram of the operation of the crimping module 7 of the present invention.

Figure 1 shows a preferred embodiment of the bag display equipment of the present invention, which includes a bag display platform 2 for carrying a packaging bag 1 and a bag display device 3 located above the bag display platform 2 (only shown in the figure) Its vacuum nozzles 312 and 321, see Figure 3 and Figure 4 for details). In this embodiment, the bag display device 2 includes a front bag display module 31 shown in FIG. 3 and a rear bag display module 32 shown in FIG. 4 , the former being close to a front edge 201 of the bag display platform 2 , the latter is close to a rear edge 202 of the bag display platform 2, both of which can be raised and lowered. Preferably, the rear bag display module 32 can also serve as a bag moving device, which will be described in detail later.

FIG. 2 shows the packaging bag 1 to be unfolded and an item 10 waiting to be pushed into the packaging bag 1 . The object 10 may be a wafer box, such as a front-loading universal pod (FOUP) or a front-loading wafer transport box (FOSB), but may also be other items. The packaging bag 1 can be a special packaging bag used to package the wafer box, but is not limited to this.

As shown in FIG. 2 , the exemplary packaging bag 1 includes a sealed bag bottom 11 , an unsealed bag mouth 12 , and a bag body 13 located between the bag bottom 11 and the bag mouth 12 . The packaging bag 1 is initially in a flat, unexpanded state, with an upper bag piece 131 and a lower bag piece 132 (see Figure 8) of the bag body 13 overlapped together, and the bag opening 12 is in a closed state. status while waiting for expansion. As shown in FIG. 8 , the bag body 13 also includes opposite side bag pieces 133 and 134 located between the upper bag piece 131 and the lower bag piece 132 . When the packaging bag 1 is in the unexpanded state, the two side bag pieces 133 and 134 are respectively folded inward and sandwiched between the overlapping upper bag piece 131 and the lower bag piece 132. Therefore, as shown in Figure 2 They cannot be seen in . In addition, there are some packaging bags used for items to be packaged, such as wafer stacking boxes (Horizontal Wafer Shippers, HWS) packaging bags, die pallet packaging bags, and reel (COF on Reel or Tape on Reel) packaging. Bags whose sides of the bag body do not necessarily fold inwardly, however, are still suitable for use in the present invention.

As shown in Figure 8, after the packaging bag 1 is unfolded, its front section, that is, a front section 131a of the upper bag piece 131 close to the bag mouth 12, and a front section 131a of the lower bag piece 132 close to the bag mouth 12 The front section composed of a front section 132a, two side pockets 133 and 134 and a front section 133a and 134a close to the bag opening 12 is used to allow the article 10 to pass, and after the article 10 passes, the front section The front part will be subjected to a heat-pressing sealing operation (more on this later). The rear section of the packaging bag 1 is: a rear section 131b of the upper bag piece 131 close to the bag bottom 11, a rear section 132b of the lower bag piece 132 close to the bag bottom 11, and two side bag pieces. The interior of the rear section formed by 133 and 134 close to the rear section 133b and 134b of the bag bottom 11 is used to accommodate the article 10 .

Please refer to FIGS. 1 and 2 . The bag display platform 2 is used to suck or release the lower bag piece 132 of the packaging bag 1 . The bag display device 3 can be lifted and lowered, and is used to suck or release the upper bag piece 131 of the packaging bag 1 . Among them, the bag display platform 2 sucks or releases the lower bag piece 132 through its one or more vacuum nozzles 21, and the bag display device 3 uses its one or more vacuum nozzles 312 and 321 sucks or releases the upper bag piece 131.

In this embodiment, as shown in Figures 1 and 3, the bag display device 3 The front bag display module 31 is installed above the bag display platform 2, close to the front edge 201 of the bag display platform 2, and includes a part of the vacuum nozzle (hereinafter referred to as the front vacuum nozzle 312) and drives these A lifting drive mechanism 310 for lifting and lowering the front vacuum suction nozzle 312. The front vacuum nozzle 312 is used to suck or release the front section 131a of the upper bag piece 131 of the packaging bag 1 . The lifting drive mechanism 310 includes two main lifting slides 310a and 310b located on both sides of the front edge 201 of the bag display platform 2 and facing each other. Two pairs of lifting sliding tables 314, and two brackets 312a and 312b respectively connected to the two pair of lifting sliding tables 314 and facing each other. The front vacuum nozzle 312 is divided into two groups and connected to the two brackets 312a and 312b respectively. Among them, the two auxiliary lifting slides 314 can be raised and lowered synchronously under the synchronization of the two main lifting slides 310a and 310b, and the two brackets 312a and 312b and the front vacuum nozzles 312 thereon can be synchronously moved by the two auxiliary lifting slides. Driven by synchronous lifting.

In this embodiment, as shown in Figures 1 and 4, the rear bag display module 32 of the bag display device 3 is installed above the bag display platform 2, close to the rear edge 202 of the bag display platform 2, And includes another part of the vacuum nozzle (hereinafter referred to as the rear vacuum nozzle 321), a lift drive slide 323 that drives the rear vacuum nozzle 321 to lift, and a lift drive slide 323 that lifts and lowers. Frame 323a. The rear vacuum nozzle 321 is connected to the frame 323a and is used to suck or release the rear section 131b of the upper bag piece 131 of the packaging bag 1 .

The bag display method of the present invention includes the following steps a to c. These steps can be performed by the bag display device of the present invention, but are not limited thereto.

Step a: Send the packaging bag 1 to be unfolded to the bag display platform 2, as shown in Figure 1. At this time, the upper bag piece 131 of the packaging bag 1 faces the front vacuum nozzle 312 of the bag display device 3 above, and the lower bag piece 132 is supported by the bag display platform 2 and is close to the bag display platform 2 2 vacuum nozzles 21.

Step b: As shown in Figures 5 and 6, the front section 132a of the lower bag piece 132 of the packaging bag 1 is sucked by the vacuum suction nozzle 21 of the bag display platform 2, and the front and rear ends of the bag display device 3 are sucked. The rear vacuum nozzles 312 and 321 suck the front region 131a and the rear region 131b of the upper bag piece 131 of the packaging bag 1 .

Step c: As shown in Figure 7, separate the bag display platform 2 and the bag display device 3 by a certain distance, such as a full distance A, so that the upper bag piece 131 and the lower bag piece 132 of the packaging bag 1 face each other. Separate the full opening distance A. At this time, as shown in FIG. 8 , the packaging bag 1 has been unfolded to a fully expanded state, that is, the upper bag piece 131 , the lower bag piece 132 and the two side bag pieces 133 and 134 are now fully formed. A holding space 120 for holding the item 10 .

In this embodiment, the bag display platform 2 is stationary, and only the bag display device 3 can be raised and lowered, and by the rise of the bag display device 3, the bag display platform 2 and the bag display device 3 are separated. , in other words, in this embodiment, the bag unfolding device 3 takes the upper bag piece 131 and rises away from the lower bag piece 132, so that the upper bag piece 131 and the lower bag piece 132 are separated by this distance or fully opened. Distance A. However, the bag display platform 2 can also be configured to be raised and lowered but the bag display device 3 is fixed, or both the bag display platform 2 and the bag display device 3 can be configured to be raised and lowered, which can achieve the goal of making the bag display more flexible. The bag platform 2 is separated from the bag display device 3 to drive the upper bag piece 131 and the lower bag piece 132 to separate.

After the packaging bag 1 is expanded to a sufficient size, the article 10 can be sent into the accommodation space 120 of the packaging bag 1 through the bag opening 12, and then the article 10 can be transported through the packaging bag 1 as shown in Figures 1 and 3. The relative clamping and heat pressing actions of an upper pressing head 331 and a lower pressing head 332 perform the above-mentioned heating on the front sections 131a and 132a of the upper bag piece 131 and the lower bag piece 132 of the packaging bag 1. The sealing operation is performed to close the packaging bag 1 so that the bag mouth 12 is no longer connected to the inside of the packaging bag 1 . Then, the packaging bag 1 and the items 10 in it are sent backwards by the conveyor belt 4 (see FIG. 1 ) arranged on the bag display platform 2 . In addition, before performing the hot-pressing sealing operation, an air extraction operation can also be performed to extract the air in the packaging bag 1 . However, this part is not the focus of this case and will not be discussed in detail.

When performing the above step c, although the front bag display module 31 and the rear bag display module 32 of the bag display device 3 rise together, they are not necessarily driven by the same lifting mechanism. In this embodiment , they can each have their own lifting mechanism (such as the above-mentioned lifting driving mechanism 310 and lifting driving slide 323) and can lift independently. In addition, as shown in FIG. 4 , the rear bag module 32 also includes a transverse transfer mechanism 324 for carrying the lifting drive slide 323 . The transverse transfer mechanism 324 can drive the lifting drive slide 323 to move back and forth above the bag display platform 2 and above a positioning platform 5 . Therefore, driven by the transverse transfer mechanism 324 and the lifting drive slide 323, the rear vacuum suction nozzles 321 can not only move up and down, but also move back and forth above the bag display platform 2 and above the positioning platform 5 . Through such a configuration, the rear bag unfolding module 32 can double as the bag moving device mentioned above. The process of performing a bag moving operation is explained as follows: First, the packaging bag 1 is transferred to the positioning platform 5 by a bag taking device (not shown in the figure) from a bag trough (not shown in the figure, the bag trough contains a plurality of stacked packaging bags 1). A positioning operation is performed to ensure that when the packaging bag 1 is subsequently moved to the bag display platform 2, it can be placed in a desired predetermined area without being skewed. Next, after the positioning operation is completed using the plurality of positioning plates 51 (see Figure 10) on the positioning platform 5, as shown in Figure 9, the rear vacuum nozzle 321 of the rear bag module 32 descends and sucks the package. The rear section area 131b of the upper bag piece 131 of the bag 1. Then, the rear bag display module 32 takes the sucked packaging bag 1 up, traverses and descends to the bag display platform 2. At this time, the rear vacuum suction nozzle 321 of the rear bag display module 32 is still sucking. The rear section 131b of the upper bag piece 131 is held so as to cooperate with the front bag module 31 to carry out the packaging bag unfolding operation shown in the above steps b and c. After the item 10 is pushed into the packaging bag 1, the rear bag display module 32 releases the upper bag piece 131, and then moves to the top of the positioning platform 5, ready to pick up and transfer another package that has completed positioning. Bag 1.

Considering that the packaging bag 1 may fall due to certain factors during the transfer process, as shown in FIG. 4 , the rear unfolding bag module 3 may further include a plurality of upper clamping claws 322 (this is not If necessary), they can each perform the action of clamping and placing the packaging bag 1. This can be done by using commercially available pneumatic clamping claws, which will not be described in detail. The upper clamping claws 322 are connected to the frame 323a and are respectively located on both sides of the rear vacuum nozzles 321, and can rise and fall together with the rear vacuum nozzles 321. Wherein, these upper clamping claws 322 are divided into two groups, wherein one group of upper clamping claws 322 and the other group of upper clamping claws 322 are opposite and separated by a width wider than the packaging bag 1, so as to clamp the packaging bag 1 respectively. The two opposite sides are as shown in Figure 10.

In this embodiment, as shown in Figure 4, a lifting slide 325 is provided on two opposite sides of the frame 323a. Each lifting slide 325 carries a moving slide 326. The two sets of upper clamping claws 322 are respectively Connected to two mobile slides 326. Driven by the two lifting slides 32, the two sets of upper clamping claws 322 can be raised and lowered synchronously on the frame 323a. Driven by the two moving slides 326, the two sets of upper clamping claws 322 can move relative to each other. , that is, each moves inward or outward to facilitate the action of clamping and placing the packaging bag 1 .

When the rear bag unfolding module 32 is used as the bag moving device, as shown in FIG. 10 , the rear vacuum nozzles 321 first suck the upper bag of the packaging bag 1 on the positioning platform 5 Film 131. Then, the two opposite edges of the rear section areas 131b and 132b of the upper bag piece 131 and the lower bag piece 132 of the packaging bag 1 are clamped by the upper clamping claws 322, and then the rear bag module 32 is unfolded along the The packaging bag 1 is moved to the bag display platform 2 along the path shown in Figure 9. At this time, the upper clamping claws 322 have released the packaging bag 1, but at this time the rear vacuum nozzles 321 are still sucking. Live the bag piece 131. At this point, the rear bag-expanding module 32 has completed step a, and can then cooperate with the front-expanding bag module 31 to perform steps b and c.

In addition, the rear bag module 32 may further include one or more elastic pressing blocks 327 connected to the frame 323a. The one or more elastic pressing blocks 327 are used when the rear vacuum suction nozzles 321 are lowered to suction. The position of the upper bag piece 131 is to flatten the upper bag piece 131 so that the rear vacuum suction nozzles 321 can suck the upper bag piece 131 . The elastic pressing block 327 may be made of foam material. In this embodiment, there are two elastic pressing blocks 327 that are spaced oppositely, but a long elastic pressing block can also be selected to replace them.

Preferably, as shown in FIGS. 1 and 3 , the front bag module 31 may further include a plurality of upper bags respectively located on both sides of the front vacuum nozzles 312 and capable of being raised and lowered together with the front vacuum nozzles 312 . Clamp 313 (not necessary). In addition, the bag display platform 2 can further include at least two lower clamping claws 22 that can be lifted, lowered, and moved horizontally. The two lower clamping claws 22 are usually hidden inside the bag display platform 2. When it is necessary to clamp the packaging bag 1 Only then does it rise and float out of the display bag platform 2. These upper clamping jaws 313 are divided into two groups, one group of upper clamping jaws 313 is connected to the bracket 312a, and the other group of upper clamping jaws 313 is connected to the bracket 312b, and these two groups The set of upper clamping claws 313 are opposite and spaced apart by a width wider than the packaging bag 1, so as to respectively clamp the two opposite sides of the upper bag piece 131 of the packaging bag 1. The two lower clamping claws 22 are also opposite and separated by a width wider than the packaging bag 1, so as to clamp the two opposite sides of the lower bag piece 132 of the packaging bag 1 respectively.

In this embodiment, as shown in Figure 3, the two main lifting slides 310a and 310b each carry a telescopic slide 315, and the two sets of upper clamping claws 313 are respectively connected to the two telescopic slides 315. Driven by the two main lifting slides 310a and 310b, the two sets of upper clamping claws 313 can respectively rise and fall together with the two sets of front vacuum suction nozzles 312. Driven by the two telescopic slides 315, the two sets of upper clamping claws 313 The upper clamping claws 313 can move relatively, that is, move inward or outward respectively, so as to facilitate the action of clamping and placing the packaging bag 1. The mechanical configuration of the two lower clamping jaws 22 is similar to the above-mentioned configuration, so it can also perform lifting and relative movement actions, which will not be described in detail. The upper clamping jaws 313 and the lower clamping jaws 22 can each perform the action of clamping and placing the packaging bag 1. Commercially available pneumatic clamping jaws can be used, which will not be described in detail.

In step c, the bag display platform 2 and the bag display device 3 use the vacuum suction nozzles 21, 312 and 321 to relatively separate the upper bag piece 131 and the lower bag piece 132 of the packaging bag 1. distance or the full opening distance A. However, the packaging bag 1 may be difficult to unfold due to material or other factors. In this case, the upper clamping jaws 313 and the lower clamping jaws 22 are needed to assist. Instructions are as follows.

First, after the packaging bag 1 is sent to the bag display platform 2, as shown in Figure 11, the one or more vacuum nozzles 21 can be used to suck the lower bag piece 132, and the front and rear bags can be sucked. The vacuum nozzles 312 and 321 suck and move the upper bag piece 131 up to a small height (hereinafter referred to as the first height), so that the upper bag piece 131 and the lower bag piece 132 are slightly separated by a small distance. A1, in short, the front section and the rear section of the packaging bag 1 are unfolded together to a first unfolded state as shown in Figure 11. This method can be applied to the packaging bags of 8-inch wafer boxes.

However, it can also be changed to unfold the front section of the packaging bag 1 first, and then unfold the rear section of the packaging bag 1, so that the packaging bag 1 is unfolded to the first unfolded state. To be more specific, the front vacuum suction nozzles 312 of the front unfolding bag module 31 are used to suck and carry the front section 131a of the upper bag piece 131 up to the first height, and then move it up to the first height. The rear vacuum nozzles 321 of the rear bag module 32 are used to suck and carry the rear section 131b of the upper bag piece 131 up to the first height, so that the upper bag piece 131 and the lower bag The pieces 132 are slightly separated by this small distance A1. This method can be applied to the packaging bags of 12-inch wafer boxes.

After the packaging bag 1 is unfolded to the first unfolded state, the separation action of the bag display platform 2 and the bag display device 3 is first suspended. Then, use the upper clamping claws 322, 313 and the lower clamping claws 22 to continue to unfold the packaging bag 1. During this process, the vacuum nozzle 21 still sucks the lower bag piece 132, and the front and rear vacuum nozzles 21 still suck the lower bag piece 132. The suction nozzles 312 and 321 still suck the upper bag piece 131 . More specifically, as shown in Figure 12, the upper clamping claws 313 are used to clamp the two opposite edges of the front section 131a of the upper bag piece 131, and the upper clamping claws 322 are used to clamp the upper bag piece 131. 131, the lower clamping claws 22 clamp the two opposite edges of the rear section 132b of the lower bag piece 132. Then, continue the separation action of the bag display platform 2 and the bag display device 3, for example: the bag display device 3 continues to rise, so that the upper clamping claws 313 and 322 and the front and rear vacuum suction nozzles 312 and 321 Together with the upper bag piece 131, it is moved upward to the position shown in Figure 13 or Figure 15.

When the bag mouth 12 is unfolded to the fully expanded state, the front region 132a of the lower bag piece 132 may be warped due to the material of the packaging bag 1 or other factors, which will affect the subsequent The article 10 is pushed into the packaging bag 1 . Taking this into account, as shown in FIG. 14 , the bag display equipment of the present invention may further include a bag supporting module 6 located in front of the bag display platform 2 . The bag holding module 6 includes two push plates 61 higher than the bag display platform 2 and a push plate driving mechanism 62 for driving the two push plates 61 . In this embodiment, the push plate driving mechanism 62 includes a first transmission mechanism 621 (for example, a pulley transmission mechanism) that connects the two push plates 61 and is used to drive the two push plates 61 to move away from or approach each other. A second transmission mechanism 622 for driving the first transmission mechanism 621 to move up and down (for example, a lifting platform that can move up and down), and a third transmission mechanism for carrying and driving the second transmission mechanism 622 to move forward and backward. 623 (for example, a sliding platform that can slide forward and backward). Driven by the aforementioned transmission mechanisms 621 to 623, the two push plates 61 can not only move away from each other or approach each other, but can also move up and down and forward and backward. However, The aforementioned movements of the two push plates 61 are not limited to being achieved by the aforementioned transmission mechanisms 621 to 623.

In step c, after the upper bag piece 131 and the lower bag piece 132 are slightly separated by the small distance A1, the front and rear vacuum nozzles 312, 321 and/or the upper and lower parts of the bag display device 3 The clamping claws 313 and 322 move upward with the upper bag piece 131 and gradually move away from the lower bag piece 132 . When the upper bag piece 131 moves up to a predetermined height so that the upper bag piece 131 and the lower bag piece 132 are separated to a large distance A2 (A2 is slightly smaller than A but larger than A1), the bag display platform is first paused. 2 and the bag unfolding device 3 are separated from each other, as shown in Figures 15 and 16. At this time, the packaging bag 1 has been unfolded to a second unfolded state close to the fully unfolded state. Then, the third transmission mechanism 623 pushes the two push plates 61 toward the bag display platform 2, so that the two push plates 61 extend into the packaging bag 1 and are close to the front section 132a of the lower bag piece 132, -As shown in Figure 15 and Figure 16. Then, driven by the second transmission mechanism 622, as shown in FIG. 17, the two push plates 61 move downward to press against the front section 132a of the lower bag piece 132. Then, driven by the first transmission mechanism 621, the two push plates 61 respectively move outward along the surface of the front section 132a of the lower bag piece 132, so that the two push plates 61 push from the inside to the outside respectively. The lower edges of the front sections 133a and 134a of the two side bag panels 133 and 134.

While the two push plates 61 are pushing the two side bag pieces 133 and 134 outward, as shown in Figure 18, the front and rear vacuum nozzles 312, 321 and/or the upper clamping claws 313, 322 The upper bag piece 131 is continued to move upward from the predetermined height until the separation distance between the upper bag piece 131 and the lower bag piece 132 is equal to the full opening distance A (that is, the packaging bag 1 is in the fully expanded state). By pushing the lower edges of the front sections 133a and 134a of the two side bag pieces 133 and 134 outwards by the two push plates 61, the front section 132a of the lower bag piece 132 can be expanded to both sides, thereby making the lower bag piece 132 expand to both sides. 132 The front region 132a becomes relatively flat. Furthermore, when the two side bag pieces 133 and 134 are pulled upward as the upper bag piece 131 moves upward, the two side bag pieces 133 and 134 will be pressed by the two push plates 61 . Straighter, in summary, the shape of the bag opening 12 or the receiving chamber 120 will be neater (or more square), so that the article 10 can be easily pushed into the packaging bag 1 .

In addition, as shown in Figures 19 and 20, the bag unfolding equipment of the present invention can It also includes a buckling module 7 connected to the bag display platform 2. In this embodiment, the buckle module 7 includes a lifting slide 71 fixed under the front edge 201 of the bag display platform 2, connected to the lifting slide 71. A rotational driving device 72 of the sliding table 71 (such as a motor), and a retaining plate 73 connected to the rotational driving device 72. After the two push plates 61 of the bag-holding module 6 complete the action of pushing the two side bag pieces 133 and 134, the buckling module 7 immediately performs a buckling action, that is, driven by the rotation drive device 72 21, the buckling plate 73 rotates toward the bag display platform 2, and therefore enters the packaging bag 1 and is close to the middle of the front section 132a of the lower bag piece 132, and is located between the two sides. between the push plates 61. Then, driven by the lifting slide 71, the holding plate 73 moves downward, and therefore presses down the middle of the front section 132a of the lower bag piece 132. Preferably, at the same time, the The two push plates 61 of the bag supporting module 6 are also driven downward by the second transmission mechanism 622, and therefore press down both sides of the front section 132a of the lower bag piece 132. This On the one hand, it can ensure the flatness of the front section 132a of the lower bag piece 132, and on the other hand, it can ensure that the two side bag pieces 133 and 134 are indeed straightened, which will help the article 10 to be pushed into the packaging bag 1 the smoothness. In addition, the two push plates 61 in Figure 21 are just located between the bag display platform 2 and a conveyor platform (not shown in the figure), and the article 10 is pushed from the conveyor platform by a push rod mechanism (not shown in the figure). When moving up to the packaging bag 1 on the bag display platform 2, the article 10 will pass through the two push plates 61 and enter the packaging bag. At this time, the two push plates 61 act as a bridge.

1: Packing bag

11:Bag bottom

131: Bagging piece

131a: Front section area

131b:Rear section area

2: Exhibition bag platform

201: leading edge

202: Trailing edge

21: Vacuum nozzle

22: Lower jaw

3: Bag display device

31:Front display bag module

312: Front vacuum nozzle

32: Rear display bag module

321:Rear vacuum nozzle

332: Lower pressure head

Claims (21)

A bag unfolding method for unfolding a packaging bag. The packaging bag includes a sealed bag bottom, an unsealed bag mouth, and a bag body located between the bag bottom and the bag mouth. The bag body includes An upper bag piece and a lower bag piece are overlapped together, and bag pieces on both sides between the upper and lower bag pieces. The bag display method includes: moving the packaging bag to a bag display platform; One or more vacuum nozzles of the bag platform sucks the lower bag piece of the packaging bag, and one or more vacuum nozzles of a bag display device sucks the upper bag piece of the packaging bag; and causes the sucking of the lower bag piece The bag display platform of the lower bag piece is separated from the bag display device that absorbs the upper bag piece, so that the overlapping upper bag piece and the lower bag piece are separated; when the upper bag piece and the lower bag piece are slightly When separated by a small distance, the separation action of the bag display platform and the bag display device is first suspended, and then the two opposite edges of the lower bag piece of the packaging bag are clamped by a plurality of lower clamping claws of the bag display platform. The plurality of upper clamping claws of the bag display device clamp the two opposite edges of the upper bag piece of the packaging bag, and then continue the separation action of the bag display platform and the bag display device to separate the upper bag piece and the lower bag piece. Separate to a full opening distance greater than the minimum distance. The full opening distance refers to the distance between the upper bag piece and the lower bag piece when the packaging bag is in a fully expanded state that is enough to push an item. The bag display method according to claim 1, wherein the step of slightly separating the upper bag piece and the lower bag piece of the packaging bag by the small distance includes: the one or more vacuum nozzle belts installed by the bag display device A front section area of the upper bag piece close to the bag mouth and a rear section area close to the bag bottom are moved together to a low height, so that the upper bag piece and the lower bag piece are slightly separated by the small distance. The bag display method as described in claim 1, wherein the step of slightly separating the upper bag piece and the lower bag piece of the packaging bag by the small distance includes: first, using a part of the vacuum nozzle of the bag display device to carry the upper bag piece. The front section of the bag piece close to the bag mouth first moves up to a small height, and then the vacuum nozzle of the other part of the bag display device moves up the rear section of the upper bag piece close to the bag bottom. to the not high height, so that the upper bag piece and the lower bag piece are slightly separated by the small distance. The bag display method as described in claim 1, wherein when the separation action of the bag display platform and the bag display device continues until the upper bag piece and the lower bag piece are separated by a large distance, the bag display platform is first paused. With the separation action of the bag unfolding device, two push plates of a bag supporting module are used to push the lower edges of the front sections of the two side bag pieces close to the bag mouth from the inside to the outside, where the maximum distance is greater than the Small distance but less than the full open distance. The bag display method as described in claim 4, wherein while the two push plates of the bag supporting module push the two side bag pieces, the bag display platform and the bag display device continue to separate, Until the separation distance between the upper bag piece and the lower bag piece is equal to the full opening distance. The bag unfolding method as described in claim 5, wherein after the two push plates of the bag holding module complete the action of pushing the two side bag pieces, a buckling module performs a buckling action, so that the buckling mold A set of buckling plates presses down a middle of a front section of the lower bag piece close to the bag mouth. The bag unfolding method as described in claim 6, wherein while the buckling module performs the buckling action, the two push plates of the bag holding module push both sides of the front section area of the lower bag piece toward Press down. The bag display method described in claim 1 includes: before the packaging bag is moved to the bag display platform, a positioning platform first performs a positioning operation on the packaging bag, and then a bag moving device moves the positioning completed The packaging bag is moved to the bag display platform. A bag unfolding device for unfolding a packaging bag. The packaging bag includes a sealed bag bottom, an unsealed bag mouth, and a bag body located between the bag bottom and the bag mouth. The bag body includes An upper bag piece and a lower bag piece are overlapped together, and bag pieces on both sides between the upper and lower bag pieces. The bag display equipment includes a bag display platform for placing the packaging bag and a bag display located on the display. A bag display device above the bag platform. The bag display platform includes one or more vacuum nozzles for sucking or releasing the lower bag piece. The bag display device includes a front bag display module that can be lifted and lowered. A rear bag display module that can be lifted and lowered, and the actions of the two are independent. The front bag display module includes a plurality of front vacuum nozzles, which are used to suck or release the upper bag piece close to the A front section area of the bag mouth, the rear bag module includes a plurality of rear vacuum nozzles, the rear vacuum nozzles are used to suck or release the upper bag piece close to the bag In a rear section of the bottom, the bag display platform and the bag display device can be relatively separated, so that the overlapping upper and lower bag pieces can be separated accordingly. The bag display equipment as described in claim 9, wherein the front bag display module includes: two opposite main lifting slides, respectively located on both sides of a front edge of the bag display platform; two opposite lifting slides The platforms are respectively installed on the two main lifting slides and can be raised and lowered synchronously under the synchronous driving of the two main lifting slides; and the two opposite brackets are respectively connected to the two auxiliary lifting slides and can be moved on both sides. The auxiliary lifting slide table is synchronously lifted and lowered under the synchronous drive; wherein, the front vacuum nozzle is divided into two groups and connected to the two brackets respectively. The bag display equipment according to claim 9, wherein the rear bag display module includes a lifting drive slide erected above the bag display platform and close to the rear edge of the bag display platform. A frame is lifted and lowered driven by the table, and the rear vacuum nozzle is connected to the frame. The bag display equipment as claimed in claim 11, wherein the rear bag display module includes two lifting slides respectively provided on two opposite sides of the frame, and the two movable slides respectively provided on the two lifting slides. , and two sets of upper clamping claws respectively connected to the two moving slides and used to clamp or release the two opposite sides of the packaging bag, wherein the two sets of upper clamping claws are opposite and separated by a distance larger than the packaging bag. The bag is also wide in width, and is synchronously lifted and lowered driven by the two lifting slides, and moves relative to each other driven by the two movable slides. The bag display device according to claim 11, wherein the rear bag display module includes one or more elastic pressing blocks connected to the frame, and the one or more elastic pressing blocks are attached when the rear vacuum suction nozzle descends to the suction port. When reaching the position of the upper bag piece, press Make the upper bag piece. The bag display equipment according to any one of claims 11 to 13, wherein the rear bag display module includes a lateral transfer mechanism for carrying the lifting drive slide, and the lateral transfer mechanism can drive the lift drive slide. The platform moves back and forth above the bag display platform and above a positioning platform, and the positioning platform is used to position the packaging bag. The bag display equipment according to claim 10, wherein the front bag display module includes two telescopic slides respectively provided on the two main lifting slides, and are respectively connected to the two telescopic slides and used for clamping. Or release the two sets of upper clamping claws on the two opposite sides of the upper bag piece of the packaging bag, wherein the two sets of upper clamping claws are opposite and separated by a width wider than the packaging bag, and are raised and lowered in the two main It is driven by the sliding table to rise and fall synchronously, and is driven by the two telescopic sliding tables to move relative to each other. The bag display equipment as described in claim 15, wherein the bag display platform includes at least two lower clamping jaws that can be lifted, lowered, and moved horizontally, and the two lower clamping jaws are opposite and separated by a width wider than the packaging bag, and The two lower clamping claws are usually hidden inside the bag display platform, and rise and float out of the bag display platform when it is necessary to clamp the two opposite sides of the lower bag piece of the packaging bag. A bag unfolding device for unfolding a packaging bag. The packaging bag includes a sealed bag bottom, an unsealed bag mouth, and a bag body located between the bag bottom and the bag mouth. The bag body includes An upper bag piece and a lower bag piece are overlapped together, and bag pieces on both sides between the upper and lower bag pieces. The bag display equipment includes a bag display platform for placing the packaging bag and a bag display located on the display. A bag display device above the bag platform, wherein the bag display platform includes one or more vacuum nozzles for sucking or releasing the lower bag piece, and the bag display device includes a vacuum nozzle for sucking or releasing the upper bag piece. One or more vacuum nozzles, the bag display platform and the bag display device can be relatively separated, so that the overlapping upper and lower bag pieces are separated, and the bag display platform includes at least two lower clamping claws, the display bag The bag device includes a plurality of upper clamping jaws, and two lower clamping jaws are attached to the When the upper and lower bag pieces are separated to a small distance apart, the two opposite sides of the lower bag piece are respectively grasped. When the upper and lower bag pieces are separated to a small distance, the upper clamping claws are tied to Grasp the two opposite sides of the top bag piece. The bag display equipment described in claim 17 includes a bag supporting module located in front of the bag display platform. The bag supporting module includes two push plates higher than the bag display platform and a push plate for driving the two push plates. A push plate driving mechanism. When the upper and lower bag pieces are separated to a large distance larger than the small distance, driven by the push plate driving mechanism, the two push plates extend into the packaging bag and resist against each other. Press the lower bag piece of the packaging bag near a front section of the bag mouth, and push the lower edges of the two side bag pieces near the front section of the bag mouth from the inside to the outside. The bag display equipment as described in claim 18, wherein the bag display platform and the bag display device continue to separate while the two push plates push the two side bag pieces outward until the upper bag piece and the lower bag The pieces are separated until they are separated by a full distance greater than the maximum distance. The bag display equipment described in claim 19 includes a buckle module connected to the bag display platform, and a buckle plate of the buckle module pushes the lower bag piece after the two push plates complete the action of pushing the two side bag pieces. A middle part of the front section of the bag piece is pressed down. The bag display equipment of claim 20, wherein while the buckling plate of the buckling module presses down the middle of the front area of the lower bag piece, the two push plates push the lower bag piece Press down on both sides of the front area.

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