Bag opening device

Abstract

The utility model provides a bag opening device. The bag opening device comprises a base frame; the bag storage device is arranged at the rear part of the base frame; the bag suction device is arranged on the base frame in a front-back moving mode through a walking device and comprises a first mounting base, an upper suction cup arranged on the first mounting base and a first driving device used for driving the first mounting base to move up and down; the lower sucking disc is arranged at the front part of the base frame; the air blowing pipe is arranged on the base frame; the opening device is arranged on the front portion of the base frame and located in front of the lower suction cup and comprises a clamping piece, an upper opening piece and a lower opening piece, the upper opening piece and the lower opening piece are used for being inserted into a paper bag opening, the clamping piece and the lower opening piece are both arranged on a second installation base, and the second installation base is driven by a second driving device to move front and back. The clamping piece is located below the lower opening piece and driven by a third driving device to move up and down. The bag opening device can automatically complete bag opening operation of paper bags, is simple and reliable in structure and high in adaptability, and can effectively improve the production efficiency and reduce the production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging technical field, especially a kind of bag opening device. BACKGROUND

[0002] Pull-top cap and other products are usually packaged with paper bags, which are often folded to save space during transportation and storage. When packaging is performed, the paper bags need to be opened and smoothly loaded with pull-top cap and other products. Currently, the bag opening operation of paper bags is usually performed manually by workers, which is low in efficiency and high in labor cost. SUMMARY

[0003] The utility model is directed at least to one of the technical problems existing in the prior art, and provides a bag opening device that helps to improve production efficiency and reduce production cost.

[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme:

[0005] A bag opening device comprises:

[0006] a base frame;

[0007] a bag storage device arranged at the rear of the base frame and used for storing paper bags in a folded state;

[0008] a bag suction device arranged on the base frame and movable forward and backward through a walking device, the bag suction device comprising a first mounting seat, an upper suction disc arranged on the first mounting seat and used for sucking the top surface of a paper bag, and a first driving device used for driving the first mounting seat to move up and down;

[0009] a lower suction disc arranged at the front of the base frame, the lower suction disc being used for sucking the bottom surface of a paper bag;

[0010] a gas blowing pipe arranged on the base frame and used for connecting with an external gas source and blowing gas into a paper bag;

[0011] an opening device arranged at the front of the base frame and located in front of the lower suction disc, the opening device comprising a clamping member, an upper opening member and a lower opening member each used for being inserted into the bag opening of a paper bag, the clamping member and the lower opening member being arranged on a second mounting seat, the second mounting seat being driven by a second driving device to be movable forward and backward, the clamping member being located below the lower opening member and driven by a third driving device to be movable up and down, and the clamping member being used for clamping the lower wall of a paper bag together with the lower opening member.

[0012] Preferably, the gas blowing pipe is arranged on the first mounting seat, and the gas blowing pipe is located in front of the upper suction disc.

[0013] Preferably, a guiding groove is arranged on the base frame in front of the bag storing device, and is used to guide the paper bag when the bag sucking device moves forward along the walking device.

[0014] Preferably, the upper sucking disc is arranged on the first mounting seat and is movable up and down, and a first elastic device is arranged between the upper sucking disc and the first mounting seat and is used to push the upper sucking disc to move downward.

[0015] Preferably, a pressing block is arranged on the first mounting seat and is used to clamp the paper bag together with the lower sucking disc.

[0016] Preferably, the lower sucking disc is movable up and down through a fourth driving device.

[0017] Preferably, a supporting plate is arranged on the front part of the base frame, and the supporting plate comprises a bottom plate and two side plates arranged on the left and right sides of the bottom plate respectively and extending upward, the two side plates are inclined outward from bottom to top, and a through hole is arranged on the supporting plate and is aligned with the lower sucking disc and is used for the lower sucking disc to pass through.

[0018] Preferably, the upper opening member is arranged on the base frame and is movable up and down through a fifth driving device.

[0019] Preferably, a sixth driving device is arranged on the second mounting seat and is used to drive the lower opening member to move up and down.

[0020] Preferably, the third driving device comprises a driver used to drive the clamping member to move downward and a second elastic device used to drive the clamping member to move upward.

[0021] The utility model discloses a beneficial effect is: this open bag device, the paper bag of folding state and laminated can be stored in the existing device, when operating, first drive arrangement drives first mounting seat to go down, make the upper suction plate press tightly on the paper bag of the uppermost layer and suck the paper bag, then first drive arrangement drives first mounting seat to go up, take out the paper bag of the uppermost layer, then walking device makes the upper suction plate drag the paper bag and move to the lower suction plate, the lower suction plate sucks the bottom surface of the paper bag, then first drive arrangement drives the upper suction plate and goes up, by this, can open the bag opening of paper bag, the air pipe passes through the bag opening of opening and blows the air to the paper bag, can inflate the paper bag, then second drive arrangement drives second mounting seat and goes back, make the lower opening piece insert the bag opening of paper bag, third drive arrangement drives the clamping piece and goes up, make the lower opening piece and clamping together clamp the lower wall of paper bag, second drive arrangement drives second mounting seat and goes forward, can drag the paper bag and make the upper opening piece also insert the bag opening of paper bag, by this, the upper opening piece and lower opening piece support the bag opening of paper bag together, then can load the pop -on lid and other products into the paper bag, by this, the open bag device can automatically complete the open bag operation of paper bag, simple and reliable structure, strong adaptability, can effectively improve production efficiency, reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further explained in detail in the combination of the drawings and specific embodiment.

[0023] Fig. 1 It is the structure diagram of preferred embodiment of the utility model;

[0024] Fig. 2 It is the structure diagram of suction bag device and store bag device part in preferred embodiment of the utility model;

[0025] Fig. 3 It is the structure diagram of lower suction plate and opening device part in preferred embodiment of the utility model.

[0026] Among them, the reference numeral in the drawing is:

[0027] 10, base frame;11, guide bag groove;12, bag containing groove;20, store bag device;30, suction bag device;31, first mounting seat;32, upper suction plate;33, first drive arrangement;34, detection device;35, pressing block;40, walking device;50, lower suction plate;51, fourth drive arrangement;52, supporting plate;521, through hole;60, air pipe;70, opening device;71, clamping piece;711, driver;712, second elastic device;72, upper opening piece;721, pivot axle;722, fifth drive arrangement;723, stop lever;73, lower opening piece;731, sixth drive arrangement;74, second mounting seat;741, second drive arrangement;742, lifting seat;75, laser detector. SPECIFIC EMBODIMENT

[0028] The detailed description of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the utility model.

[0030] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood broadly, and the skilled person in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0031] Referring to Figs. 1 to 3 , the preferred embodiment of the utility model, a bag opening device, comprising: base frame 10;Bag storage device 20, set in the rear of base frame 10, for storing paper bag in folded state;Suction bag device 30, through a walking device 40, the front and rear movable setting on base frame 10, suction bag device 30 includes first mounting seat 31, set on first mounting seat 31 and used for sucking the top surface of upper suction disc 32 and used for driving first mounting seat 31 up and down movement first drive device 33;Lower suction disc 50, set in the front of base frame 10, lower suction disc 50 is used for sucking the bottom surface of paper bag;Blowing pipe 60, set on base frame 10, for connecting with external gas source and blowing gas into paper bag;Opening device 70, set in the front of base frame 10 and located in front of lower suction disc 50, opening device 70 includes clamping part 71 and upper opening part 72 and lower opening part 73 for inserting into paper bag opening, clamping part 71 and lower opening part 73 are all set on a second mounting seat 74, second mounting seat 74 is driven by a second drive device 741 and can move forward and backward, clamping part 71 is located below lower opening part 73 and can move up and down by a third drive device, clamping part 71 is used for clamping lower wall of paper bag with lower opening part 73.

[0032] The paper bag in folded state and stacked state can be stored in the storage device, when working, the first driving device 33 drives the first mounting base 31 to move downward, so that the upper suction disc 32 is pressed on the uppermost paper bag and sucks the paper bag, then the first driving device 33 drives the first mounting base 31 to move upward, the uppermost paper bag is taken out, then the walking device 40 drags the paper bag to move forward to the lower suction disc 50 by the upper suction disc 32, the lower suction disc 50 sucks the bottom surface of the paper bag, then the first driving device 33 drives the upper suction disc 32 to move upward, so that the bag opening of the paper bag is opened, the air blowing pipe 60 blows air into the paper bag through the opened bag opening, so that the paper bag is inflated, then the second driving device 741 drives the second mounting base 74 to move backward, so that the lower opening piece 73 is inserted into the bag opening of the paper bag, the third driving device drives the clamping piece 71 to move upward, so that the lower opening piece 73 and the clamping piece together clamp the lower wall of the paper bag, the second driving device 741 drives the second mounting base 74 to move forward, so that the paper bag is dragged forward, so that the upper opening piece 72 is also inserted into the bag opening of the paper bag, so that the upper opening piece 72 and the lower opening piece 73 together support the bag opening of the paper bag, then the product such as a pop-top cap can be loaded into the paper bag, so that the bag opening device can automatically complete the bag opening operation of the paper bag, the structure is simple and reliable, the adaptability is strong, the production efficiency can be effectively improved, and the production cost is reduced.

[0033] As a preferred embodiment of the utility model, it can also have the following additional technical features:

[0034] In the embodiment, the bag storage device 20 adopts a bag storage groove structure, which is simple in structure and can position the paper bag, facilitating subsequent operation. In addition, the rear section of the bag storage groove in the embodiment is tilted upward by an angle, which helps to reduce the length of the bag opening device and the size of the space occupied by the equipment.

[0035] In the embodiment, the upper suction disc 32 and the lower suction disc 50 are both vacuum suction discs connected with an external negative pressure source, which helps to stably suck the paper bag and is more reliable.

[0036] In the embodiment, the walking device 40 adopts a guide rail rodless cylinder, which is simple in structure and reliable in operation, and moves quickly, which helps to improve the production efficiency. In other embodiments, the walking device 40 can also adopt other commonly used walking structures such as a motor-driven sliding rail structure, and is not limited thereto.

[0037] In the embodiment, the air blowing pipe 60 is arranged on the first mounting base 31, and the air blowing pipe 60 is located in front of the upper suction disc 32, which facilitates the alignment of the air blowing pipe 60 and the bag opening of the paper bag. In other embodiments, the air blowing pipe 60 can also be independently arranged at the front of the base frame 10, and is not limited thereto.

[0038] In the embodiment, the base frame 10 is provided with a bag guiding groove 11 in front of the bag storing device 20, which is used to guide the paper bag when the bag sucking device 30 moves forward by the walking device 40, so as to ensure the accuracy of the left and right positions of the paper bag and facilitate the smooth operation of the subsequent operation, which is more reliable. The middle part of the base frame 10 is provided with a bag containing groove 12 for supporting and containing the paper bag, which can further limit the paper bag to prevent the paper bag from bending and deviating during the opening and loading process, which is more reliable.

[0039] In the embodiment, the upper suction disc 32 is movably arranged on the first mounting seat 31, and a first elastic device for pushing the upper suction disc 32 to move downward is arranged between the upper suction disc 32 and the first mounting seat 31. The first mounting seat 31 is provided with a detection device 34 for detecting the up-and-down position of the upper suction disc 32. Thus, by detecting the up-and-down position of the upper suction disc 32, the pressure of the upper suction disc 32 pressing on the paper bag can be determined. Therefore, the upper suction disc 32 can be opened after the pressure on the paper bag reaches a certain value to ensure the firmness of the paper bag, so that the paper bag is not easy to loosen during the operation, which is more reliable. In the embodiment, the first elastic device adopts a spring arranged outside the suction disc shaft of the upper suction disc 32, and the detection device 34 adopts a proximity switch, which is simple and reliable in structure and convenient to install and use. In other embodiments, the first elastic device can also adopt other commonly used elastic structures such as elastic sheets and elastic pads, and the detection device 34 can also adopt other commonly used detection structures such as contact switches and infrared sensors, which are not limited thereto.

[0040] In the embodiment, the first mounting seat 31 is provided with a pressing block 35, which is used to clamp the paper bag together with the lower suction disc 50, so as to help ensure the firm adsorption of the lower suction disc 50 to the paper bag, which can effectively reduce the failure rate and is more reliable. In the embodiment, the pressing block 35 is made of POM plastic material, which can reduce the damage to the paper bag.

[0041] In the embodiment, the lower suction disc 50 is driven to move up and down by a fourth driving device 51, which can avoid the contact between the lower suction disc 50 and the paper bag during the movement of the paper bag, prevent the movement of the paper bag from being hindered, and reduce the damage to the paper bag. In the embodiment, after the upper suction disc 32 drags the paper bag to above the lower suction disc 50, the upper suction disc 32 is driven to move downward by the first driving device 33 to make the paper bag close to the lower suction disc 50, and at the same time, the lower suction disc 50 is driven to move upward by the fourth driving device 51 to press and suck the bottom surface of the paper bag. Then, the upper suction disc 32 and the lower suction disc 50 are pulled up and down to open the bag opening of the paper bag. In other embodiments, the pressing and adsorption of the lower suction disc 50 to the paper bag and the opening of the bag opening can also be realized by only the up-and-down movement of the upper suction disc 32 or the up-and-down movement of the lower suction disc 50.

[0042] In the embodiment, the front part of the base frame 10 is provided with a supporting plate 52, which comprises a bottom plate and two side plates respectively arranged on the left and right sides of the bottom plate and extending upward, the two side plates are inclined outward from bottom to top, and the supporting plate 52 is provided with a through hole 521 aligned with the lower suction disc 50 and through which the lower suction disc 50 can pass, the two side plates of the supporting plate 52 can make the bag opening of the paper bag be raised, which is beneficial to the opening operation of the paper bag.

[0043] In the embodiment, the upper opening member 72 is swingably arranged on the base frame 10 through a left-right direction pivot shaft 721 and can swing up and down under the drive of a fifth driving device 722, so that before being inserted into the bag opening of the paper bag, the fifth driving device 722 can swing the rear end of the upper opening member 72 downward by an angle, which is beneficial to the smooth insertion of the upper opening member 72 into the bag opening of the paper bag, and after being inserted into the bag opening of the paper bag, the fifth driving device 722 can reset the upper opening member 72, so as to support the bag opening of the paper bag, which is beneficial to the subsequent loading operation, and the structure is simple and ingenious, which is helpful to reduce the failure rate and is more reliable.

[0044] In the embodiment, the second mounting seat 74 is provided with a sixth driving device 731 for driving the lower opening member 73 to move up and down, so as to facilitate the insertion of the lower opening member 73 into the bag opening of the paper bag.

[0045] In the embodiment, the third driving device comprises a driver 711 for driving the clamping member 71 to move downward and a second elastic device 712 for driving the clamping member 71 to move upward, so that the action of the clamping member 71 and the lower opening member 73 clamping the lower wall of the paper bag is completed by the second elastic device 712, which can adaptively adjust the clamping force of the clamping member 71 on the paper bag, and when the paper bag is stuck, it can help to prevent the paper bag from being damaged due to excessive pulling force. In the embodiment, the driver 711 is a one-way air cylinder, and the second elastic device 712 is a spring sleeved on the rod body at the bottom of the clamping member 71, which has the advantages of simple structure and easy installation. In other embodiments, the second elastic member can also be a tension spring, an elastic rope or other elastic structures, or the third driving device can also select a two-way air cylinder or other suitable driving structures, which are not limited thereto.

[0046] In the embodiment, the second mounting seat 74 is provided with a lifting seat 742 driven by the sixth driving device 731 to move up and down, and the lower opening member 73, the clamping member 71 and the third driving device are arranged on the lifting seat 742 to move up and down with the lifting seat 742, which is beneficial to maintaining the stability of the clamping force on the paper bag.

[0047] In the embodiment, the upper opening member 72 and the lower opening member 73 are aligned together to form a loading opening, which is beneficial to subsequent loading operation. In the embodiment, the upper opening member 72 and the lower opening member 73 are both in the shape of a semi-cylinder, and the rear sections of the two are both pointed, which is beneficial to insertion into the bag opening. In other embodiments, the upper opening member 72 and the lower opening member 73 can also adopt other suitable shapes according to requirements.

[0048] In the embodiment, the base frame 10 is provided with a stop rod 723 for abutting against the upper opening member 72 to limit the rotation angle of the upper opening member 72, and the base frame 10 is provided with a laser detector 75 on the side of the upper opening member 72 for detecting the bag opening state.

[0049] In the embodiment, the first driving device 33 is a servo motor, and the second driving device 741, the fourth driving device 51, the fifth driving device 722 and the sixth driving device 731 are all air cylinders. In other embodiments, these driving devices can also adopt other common driving structures, and the person skilled in the art can flexibly select according to requirements, and it is not limited thereto.

[0050] In the absence of conflicts, the person skilled in the art can freely combine and superimpose the above additional technical features.

[0051] The above is only the preferred embodiment of the present application, and any technical solution that achieves the purpose of the present application by basically the same means falls within the protection scope of the present application.

Claims

1. A bag-opening device, characterized in that, include: Base frame (10); A bag storage device (20) is provided at the rear of the base frame (10) for storing folded paper bags; The suction bag device (30) is mounted on the base frame (10) and can be moved back and forth by a walking device (40). The suction bag device (30) includes a first mounting base (31), an upper suction cup (32) mounted on the first mounting base (31) and used to suction the top surface of the paper bag, and a first driving device (33) used to drive the first mounting base (31) to move up and down. A lower suction cup (50) is provided at the front of the base frame (10), and the lower suction cup (50) is used to suction the bottom surface of the paper bag; An air blowing pipe (60) is installed on the base frame (10) for connecting to an external air source and blowing gas into the paper bag; An opening device (70) is disposed at the front of the base frame (10) and in front of the lower suction cup (50). The opening device (70) includes a clamping member (71) and an upper opening member (72) and a lower opening member (73) for inserting into the opening of the paper bag. The clamping member (71) and the lower opening member (73) are both disposed on a second mounting base (74). The second mounting base (74) is driven by a second driving device (741) and can move back and forth. The clamping member (71) is located below the lower opening member (73) and is driven by a third driving device and can move up and down. The clamping member (71) is used to clamp the lower wall of the paper bag together with the lower opening member (73).

2. The bag-opening device according to claim 1, characterized in that, The air blowing pipe (60) is disposed on the first mounting base (31), and the air blowing pipe (60) is located in front of the upper suction cup (32).

3. The bag-opening device according to claim 1, characterized in that, A bag guide groove (11) is provided on the base frame (10) in front of the bag storage device (20). The bag guide groove (11) is used to guide the paper bag when the suction device (30) moves the paper bag forward through the walking device (40). A bag receiving groove (12) for supporting and accommodating the paper bag is provided in the middle of the base frame (10).

4. The bag-opening device according to claim 1, characterized in that, The upper suction cup (32) is movable up and down on the first mounting base (31). A first elastic device for pushing the upper suction cup (32) downward is provided between the upper suction cup (32) and the first mounting base (31). A detection device (34) for detecting the up and down position of the upper suction cup (32) is provided on the first mounting base (31).

5. A bag-opening device according to claim 1, characterized in that, The first mounting base (31) is provided with a pressure block (35), which is used to clamp the paper bag together with the lower suction cup (50).

6. The bag-opening device according to claim 1, characterized in that, The lower suction cup (50) can move up and down by being driven by a fourth driving device (51).

7. The bag-opening device according to claim 1, characterized in that, The base frame (10) is provided with a support plate (52) at the front. The support plate (52) includes a bottom plate and two side plates that are respectively provided on the left and right sides of the bottom plate and extend upward. The two side plates are inclined outward from bottom to top. The support plate (52) is provided with a through hole (521) that is aligned with the lower suction cup (50) and allows the lower suction cup (50) to pass through.

8. A bag-opening device according to claim 1, characterized in that, The upper opening (72) is pivotally mounted on the base frame (10) via a left-right pivot shaft (721) and is driven by a fifth drive device (722) to swing up and down.

9. A bag-opening device according to claim 1, characterized in that, A sixth driving device (731) is provided on the second mounting base (74), which is used to drive the lower opening member (73) to move up and down.

10. A bag-opening device according to claim 1, characterized in that, The third driving device includes a driver (711) for driving the clamping member (71) to move downward and a second elastic device (712) for driving the clamping member (71) to move upward.

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