Packaging bag opening and detecting device

Abstract

The utility model discloses a packaging bag opening and detecting device which comprises two vacuum suction cups, a pipeline, a vacuum pump, an ejector rod, a laser optoelectronic switch and a blower. The two vacuum chucks are oppositely arranged in a staggered manner and are respectively connected with the vacuum pump through pipelines; the number of the ejector rods is two. The two ejector rods are respectively arranged at opposite positions of the two vacuum chucks; the number of the laser photoelectric switches is two. The two laser photoelectric switches are arranged at the lateral positions of the two vacuum chucks; the blower is arranged above the two vacuum chucks; the packaging bag opening device can accurately open packaging bags in a normal state, detect the situation that the packaging bags are placed abnormally, and avoid material canning of the abnormal or unopened packaging bags, so that material waste is avoided, and cost is saved. The machine is prevented from being damaged and normal operation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging bags, and in particular relates to a packaging bag opening and detection device. Background Art

[0002] Currently, conventional packaging machines typically open packaging bags by simply using a blower or by using two vacuum suction cups to open the bag. The packaging bag may be a rigid stand-up bag.

[0003] The bag opening structure and method of the prior art are prone to the situation that the packaging bag cannot be opened, resulting in a high probability of failure. At the same time, opening the bag by a hair dryer is prone to splashing the raw materials, affecting the normal operation. Utility Model Content

[0004] The purpose of the utility model is to provide a packaging bag opening and detection device to solve the problem in the prior art that the bag is opened by blowing the bag open with a hair dryer or the structure and method of two vacuum suction cups facing each other, which easily leads to bag opening failure or splashing of raw materials; it enables the device to accurately open packaging bags in normal state, detect abnormal placement of packaging bags, avoid filling materials in abnormal or unopened packaging bags, thereby avoiding waste of materials and saving costs; avoid damage to the machine, and facilitate normal operation.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a packaging bag opening and detection device, including a vacuum suction cup, a pipeline, a vacuum pump, a push rod, a laser photoelectric switch and a blower, wherein two vacuum suction cups are provided; the two vacuum suction cups are arranged oppositely and staggered, and are respectively connected to the vacuum pump through pipelines; two push rods are provided; the two push rods are respectively arranged at the opposite positions of the two vacuum suction cups; two laser photoelectric switches are provided; the two laser photoelectric switches are arranged at the lateral positions of the two vacuum suction cups; and the blower is provided above the two vacuum suction cups.

[0007] The packaging bag opening and detection device of the present invention utilizes two vacuum suction cups to suck the bag horizontally and staggered, while the opposite side of each vacuum suction cup is supported by a push rod. In this way, the push rod provides auxiliary support for the packaging bag when the vacuum suction cup sucks air, otherwise the packaging bag may not be sucked. Before the vacuum suction cup sucks the bag, a small fan is used to blow the bag opening to assist the suction cup in opening the bag. The method for detecting the opening of the packaging bag is as follows: two laser photoelectric switches are placed on both sides of the packaging bag. When the bag opening is open, the laser photoelectric switch detects that the bag opening is open; otherwise, if the bag opening is not open, the laser photoelectric switch fails to detect the bag opening.

[0008] Preferably, a pressure sensor is installed on the pipeline.

[0009] Preferably, the push rod is arranged on the bracket.

[0010] Preferably, the push rod is configured as a screw rod, a screw hole is provided on the bracket, and the screw rod is screwed into the screw hole.

[0011] Preferably, the signal emission center axes of the two laser photoelectric switches are arranged between the two vacuum suction cups.

[0012] Preferably, the signal emission directions of the two laser photoelectric switches are perpendicular to the central axis of the vacuum suction cup.

[0013] Preferably, the two laser photoelectric switches are arranged at the same lateral position of the two vacuum suction cups.

[0014] Preferably, a bag opening station is provided between the two vacuum suction cups, and the bag opening station is used for placing the packaging bag to be opened.

[0015] Preferably, the hair dryer is arranged above the bag opening station.

[0016] Preferably, the signal emission directions of the two laser photoelectric switches are respectively toward the two sides of the bag opening station close to the two vacuum suction cups.

[0017] The packaging bag opening and detection device provided by the utility model has the following beneficial effects:

[0018] 1. The packaging bag opening and detection device of the utility model can solve the problem in the prior art that the bag is opened by a hair dryer or the structure and method of opening the bag with two vacuum suction cups facing each other, which easily leads to bag opening failure or splashing of raw materials; it can accurately open the packaging bag in normal state through two laser photoelectric switches, detect the fault situation of abnormal placement of the packaging bag, avoid canning materials in abnormal or unopened packaging bags, thereby avoiding waste of materials and saving costs; avoid damage to the machine, and facilitate normal operation; it is suitable for, for example, Chinese medicine liquid canning packaging machinery.

[0019] 2. The packaging bag opening and detection device of the present invention can be equipped with a pressure sensor combined with a laser photoelectric switch to determine whether the packaging bag is opened successfully. This can prevent one of the pressure sensor and the laser photoelectric switch from failing or making an erroneous judgment, thereby avoiding the packaging machine from misjudging and mistakenly filling materials into unopened packaging bags, thereby further ensuring the normal operation of the packaging machine.

[0020] 3. The packaging bag opening and detection device of the present invention can be provided with an alarm, which will sound an alarm when a fault condition such as abnormal placement of the packaging bag is detected, thereby facilitating timely discovery and handling of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a packaging bag opening and detection device provided by one embodiment of the present utility model.

[0022] Figure 2 It is a top view of a packaging bag opening and detection device provided by one embodiment of the present utility model.

[0023] Reference numerals in the figures:

[0024] 1 is the vacuum suction cup, 2 is the pipeline, 3 is the vacuum pump, 4 is the ejector, 5 is the laser photoelectric switch, 6 is the blower, 7 is the pressure sensor, 8 is the bag opening station, and 9 is the packaging bag. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below through the accompanying drawings and specific implementation methods.

[0026] Example

[0027] Please refer to Figure 1 and Figure 2 This embodiment provides a packaging bag opening and detection device, including a vacuum suction cup 1, a pipeline 2, a vacuum pump 3, a push rod 4, a laser photoelectric switch 5 and a blower 6. The vacuum suction cup 1 is provided in two pieces; the two vacuum suction cups 1 are arranged opposite to each other and staggered, and are respectively connected to the vacuum pump 3 through the pipeline 2; the push rod 4 is provided in two pieces; the two push rods 4 are respectively arranged at the opposite positions of the two vacuum suction cups 1; the laser photoelectric switches 5 are provided in two pieces; the two laser photoelectric switches 5 are arranged at the lateral positions of the two vacuum suction cups 1; and the blower 6 is provided above the two vacuum suction cups 1.

[0028] When the packaging bag opening and detection device of this embodiment is used, the bag opening station 8 is set between the two vacuum suction cups 1. The hair dryer 6 is set above the two vacuum suction cups 1 so that it is above the bag opening station 8, so that the blowing direction of the hair dryer 6 is toward the bag opening station 8. The signal transmission center axis of the two laser photoelectric switches 5 is set between the two vacuum suction cups 1, so that the signal transmission directions of the two laser photoelectric switches 5 are respectively toward the bag opening station 8 and close to the two sides of the two vacuum suction cups 1. The blowing direction of the hair dryer 6 is toward the bag opening station 8. When the packaging bag 9 to be opened moves to the bag opening station 8, the hair dryer 6 is operated to blow the bag opening. At this time, the vacuum suction cups 1 on both sides approach and respectively suck the two side surfaces of the packaging bag 9; at the same time, the ejector rods 4 on both sides respectively press against the two side surfaces of the packaging bag 9 to support the packaging bag 9; then the two laser photoelectric switches 5 respectively transmit signals toward the two side surfaces of the packaging bag 9 to determine whether the packaging bag 9 is opened. If the packaging bag 9 is placed normally, for example, not upside down with the bag opening facing downward, and the interior of the packaging bag 9 is dry, the two laser photoelectric switches 5 can detect that the packaging bag 9 is opening normally. If the packaging bag 9 is placed upside down with the bag opening facing downward, or if there is water adsorbed inside the packaging bag 9, when air is blown to the bag opening and the vacuum suction cup 1 sucks the bag, the two laser photoelectric switches 5 will detect signals and determine that the packaging bag 9 has failed to open. The laser photoelectric switches 5 can be connected to an alarm to sound an alarm when it determines that the packaging bag 9 has failed to open.

[0029] The blower 6 may be a product of existing technology, such as a small blower with a speed of 4000 r / min.

[0030] The laser photoelectric switch 5 can adopt a reflective laser photoelectric switch of an existing technology product. When the bag opening of the packaging bag 9 is opened, the two laser photoelectric switches 5 respectively receive the laser signals reflected from the two sides of the packaging bag 9, and then it is determined that the bag opening is successfully opened; if one or two laser photoelectric switches 5 do not receive the laser signals reflected from the two sides of the packaging bag 9, it is determined that the bag opening fails.

[0031] The alarm can be a product of existing technology. The alarm and the laser photoelectric switch 5 can be connected to the PLC controller respectively. When the laser photoelectric switch 5 does not receive the laser signal reflected by the sides of the packaging bag 9 and determines that the bag opening fails, the bag opening failure signal is sent to the PLC controller, or the PLC controller does not receive the reflected signal fed back by the laser photoelectric switch 5, then the PLC controller sends a command signal to the alarm to alarm.

[0032] The vacuum suction cup 1 can be a product of the existing technology and can be installed on a moving mechanism of the existing technology. The moving mechanism can drive the vacuum suction cup 1 to move toward or away from the packaging bag 9.

[0033] In some embodiments, a pressure sensor 7 is installed on the pipeline 2. This pressure sensor 7 detects normal pressure within the pipeline 2. If the vacuum cup 1 leaks during bag opening, causing a rapid increase in negative pressure within the pipeline 2, the packaging bag 9 is determined to be unopened. The pressure sensor 7, in conjunction with the laser photoelectric switch 5, determines whether the bag 9 has been successfully opened. This prevents failure or misjudgment of either the pressure sensor 7 or the laser photoelectric switch 5, thereby preventing the packaging machine from misjudging and accidentally filling an unopened bag 9 with material.

[0034] In some embodiments, the top rod 4 is arranged on the bracket.

[0035] For example, the push rod 4 is set as a screw rod, a screw hole is provided on the bracket, and the screw rod is screwed into the screw hole. It is convenient to set the push rod 4 and also convenient for the push rod 4 to rotate and move its position in the screw hole to better support the two sides of the packaging bag 9.

[0036] In some embodiments, the signal emission directions of the two laser photoelectric switches 5 are perpendicular to the central axis of the vacuum suction cup 1. This helps the two laser photoelectric switches 5 to more accurately detect whether the two sides of the packaging bag 9 are successfully opened.

[0037] Specifically, the two laser photoelectric switches 5 are arranged at the same lateral position of the two vacuum suction cups 1, which facilitates the installation of the two laser photoelectric switches 5 on the same support frame.

[0038] Specifically, the central axes of the two vacuum suction cups 1 are arranged on the same horizontal plane. The central axes of the two ejector pins 4 and the central axes of the two vacuum suction cups 1 are also arranged on the same horizontal plane. The central axes of the opposing vacuum suction cups 1 and ejector pins 4 coincide with each other, facilitating balanced and secure suction and support of the packaging bag 9. The blowing direction of the blower 6 can form an angle of 0-90° with the horizontal plane.

[0039] The packaging bag 9 may be a rigid stand-up packaging bag in the prior art.

[0040] The above embodiments are provided for illustrative purposes only and are not intended to limit the scope of implementation. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to provide an exhaustive list of all implementations. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, is constructed and operates in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A packaging bag opening and detection device, characterized in that: include: Vacuum suction cups, set to two; The two vacuum suction cups are arranged opposite to each other and staggered, and are respectively connected to the vacuum pump through pipelines; There are two push rods; the two push rods are respectively arranged at opposite positions of the two vacuum suction cups; Two laser photoelectric switches are provided; the two laser photoelectric switches are provided at lateral positions of the two vacuum suction cups; The blower is arranged above the two vacuum suction cups.

2. The packaging bag opening and detection device according to claim 1, characterized in that: A pressure sensor is installed on the pipeline.

3. The packaging bag opening and detection device according to claim 1, characterized in that: The push rod is arranged on the bracket.

4. The packaging bag opening and detection device according to claim 3, characterized in that: The push rod is configured as a screw rod, a screw hole is provided on the bracket, and the screw rod is screwed into the screw hole.

5. The packaging bag opening and detection device according to claim 1, characterized in that: The signal transmission center axes of the two laser photoelectric switches are arranged between the two vacuum suction cups.

6. The packaging bag opening and detection device according to claim 1, characterized in that: The signal emission directions of the two laser photoelectric switches are perpendicular to the central axis of the vacuum suction cup.

7. The packaging bag opening and detection device according to claim 1, characterized in that: The two laser photoelectric switches are arranged at the lateral position of the same side of the two vacuum suction cups.

8. The packaging bag opening and detection device according to any one of claims 1 to 7, characterized in that: A bag opening station is provided between the two vacuum suction cups, and the bag opening station is used for placing the packaging bag to be opened.

9. The packaging bag opening and detection device according to claim 8, characterized in that: The blower is arranged above the bag opening station.

10. The packaging bag opening and detection device according to claim 9, characterized in that: The signal emission directions of the two laser photoelectric switches are respectively toward the two sides of the bag opening station close to the two vacuum suction cups.

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