Bag opening mechanism of a packaging machine

Abstract

The utility model relates to a kind of bag opening mechanism of packing machine, including rack, the rack is equipped with bag feeding device and bag opening device, it is characterized by: the bag opening device includes the opening component of bag mouth part being opened and the seal opening component of opening seal, bag feeding device is sent to the opening component to the unopened packing bag, the opening component opens bag mouth part and keeps open state, the seal opening component clamps bag mouth part and further opens bag mouth part to seal opening, automation bag opening, reduce artificial cost.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, specifically to a bag opening mechanism for a packaging machine. Background Technology

[0002] In daily life, there are situations where products cannot be used up in one go after the packaging is opened. If the product is exposed to air for a long time, it is prone to moisture and becomes unusable. In order to make it convenient for users to reseal the bag after opening and maintain the usability of the product, most existing packaging bags use blow-sealed bags. Blow-sealed bags have a bag opening from the bag mouth to the seal. During the product packaging process, the operator needs to pinch the two sides of the bag opening with their hands and apply force in opposite directions until the seal is opened for subsequent bagging and packaging, which results in high labor costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology.

[0004] This invention provides a bag-opening mechanism for a packaging machine that automates bag opening and reduces labor costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bag opening mechanism for a packaging machine, comprising a frame, wherein the frame is provided with a bag feeding device and a bag opening device, characterized in that: the bag opening device includes an opening component for opening the bag opening and a seal opening component for opening the seal, the bag feeding device delivers an unopened packaging bag to the opening component, the opening component opens the bag opening and keeps it open, and the seal opening component clamps the bag opening and further opens the bag opening until the seal is opened.

[0006] The present invention, which has the above-mentioned features, is as follows: the bag feeding device conveys the packaging bag to the opening component, the opening component opens the bag mouth and keeps it open, and the sealing strip opening component further opens the bag mouth until the seal is opened, thereby realizing the opening of the packaging bag.

[0007] A further feature of this invention is that the opening assembly includes an upper opening adsorption mechanism and a lower opening adsorption mechanism arranged opposite to each other, and the upper opening adsorption mechanism and the lower opening adsorption mechanism are provided with a lifting drive mechanism to drive the two to move in opposite directions or in the opposite direction.

[0008] The present invention, which has the above features, has an upper opening adsorption mechanism and a lower opening adsorption mechanism that are driven to move up and down in opposite directions by a lifting drive mechanism, so that the two adsorb the upper and lower surfaces of the bag opening respectively. The lifting drive mechanism drives the two to move in opposite directions, so that the bag opening is opened to the required extent. The lifting drive mechanism stops the lifting drive, so that the bag opening remains open.

[0009] A further feature of this invention is that the lifting drive mechanism includes a first lifting component and a second lifting component. The first lifting component drives the upper opening adsorption mechanism to move up and down, and the second lifting component drives the lower opening adsorption mechanism to move up and down.

[0010] The present invention having the above features: a first lifting component drives the upper opening adsorption mechanism to rise and fall, and a second lifting component drives the lower opening adsorption mechanism to rise and fall.

[0011] A further feature of this invention is that the first lifting assembly includes a first lifting cylinder fixedly connected to the frame. The output end of the first lifting cylinder is vertically displaced. The output end of the first lifting cylinder is provided with a first linkage plate. One end of the first linkage plate is hinged to the output end of the first lifting cylinder, and the other end is linked to a rotating rod. The rotating rod is rotatably mounted on the frame. Each end of the rotating rod is provided with a second linkage plate. One end of each second linkage plate is linked to the rotating rod, and the other end is provided with a linkage rod. One end of each linkage rod is hinged to the corresponding second linkage plate, and the other end is hinged to a lifting slider capable of lifting. The lifting slider is slidably connected to a lifting guide rod. The lifting guide rod is fixedly connected to the frame. An installation rod is connected between two lifting sliders. The installation rod is parallel to the rotating rod. The upper opening suction mechanism is mounted on the installation rod. The first linkage plate is located inside the side plate of the frame, and the second linkage plate, the lifting slider, and the linkage rod are all located outside the side plate of the frame.

[0012] The present invention having the above features is as follows: the first lifting cylinder drives the first linkage plate to drive the rotating rod to rotate, the rotating rod to cause the second linkage plate to flip, the flipping of the second linkage plate to drive the linkage rod to drive the lifting slider to rise and fall along the lifting guide rod, the rising and falling of the lifting slider to drive the mounting rod and the upper opening adsorption mechanism set on the mounting rod to rise and fall, so that the upper opening adsorption mechanism can adsorb and open the upper side of the bag opening.

[0013] A further feature of this invention is that the second lifting assembly includes a second lifting cylinder, the output end of the second lifting cylinder is provided with a seat plate, and the lower opening adsorption mechanism is provided on the seat plate.

[0014] The present invention with the above features: the second lifting cylinder drives the seat plate to lift the lower opening adsorption mechanism, so that the lower opening adsorption mechanism can adsorb and open the lower side of the bag opening. The first lifting component and the second component have different structures to adapt to the installation environment of the frame.

[0015] A further feature of this invention is that the sealing strip opening component includes a base, and the base is provided with clamping mechanisms arranged vertically opposite each other and capable of clamping one side of the bag opening. The clamping ends of the two clamping mechanisms can move towards or away from each other.

[0016] A further feature of this invention is that the clamping mechanism includes a clamping plate and a clamping head. The clamping plate has a hinge seat in the middle, and the clamping head has a hinge part at its end. The hinge part is hinged to the hinge seat. The clamping head and the clamping plate at the end facing the opening assembly form a clamping cavity for clamping the bag opening. The hinge part has a drive seat at the end opposite the clamping head. The drive seat has a cylinder. The output shaft of the cylinder passes through the drive seat and can abut against the clamping plate.

[0017] The present invention having the above features: the output shaft of the cylinder extends out to abut against the clamping plate and continues to extend, thereby driving the clamp to rotate, and the clamping cavity closes to clamp the bag opening.

[0018] A further feature of this invention is that: the two clamping plates are hinged to each other at one end to form a clamping cavity; the two clamping plates are provided with an opening drive device that drives them to move closer or further apart around the hinge point; each clamping plate is provided with teeth at the hinge point with the other clamping plate; the opening drive device includes a first gear and a second gear that mesh with each other; the first gear meshes with the teeth of one clamping plate; the second gear meshes with the teeth of the other clamping plate; the first gear or the second gear is provided with a second drive motor that drives it to reciprocate; the second drive motor is fixedly connected to the base; the first gear or the second gear is linked with a linkage gear; and the output shaft of the second drive motor is linked to the linkage gear.

[0019] The present invention having the above features: the second drive motor drives the first gear or the second gear to rotate, the first gear and the second gear rotate in opposite directions, thereby causing the clamping plate to open around the hinge, so that the bag opening held by the two clamping cavities is further opened until the seal is opened.

[0020] A further feature of this invention is that the base is provided with a displacement driving device for driving the base to move toward the opening assembly. The displacement driving device includes a displacement driving cylinder connected to the frame. The base is slidably connected to the frame, and the output end of the displacement driving cylinder is linked to the base.

[0021] The present invention, which has the above-mentioned features, uses a displacement driving device to drive the driving base to move toward the opening assembly.

[0022] A further feature of this invention is that: the frame has a transition plate between the bag infeed device and the opening assembly; the opening assembly has adjustable baffles on both sides; the baffles are equipped with a third lifting cylinder that drives them to move up and down; the third lifting cylinder is connected to the frame; the baffles can abut against the opening of the packaging bag delivered by the bag infeed device, so that the opening of the packaging bag is placed between the upper opening adsorption mechanism and the lower opening adsorption mechanism; the transition plate is equipped with a sensor that detects the passage of the opening of the packaging bag.

[0023] The present invention with the above features: when the packaging bag does not enter between the upper opening adsorption mechanism and the lower opening adsorption mechanism, the adsorption port of the lower opening adsorption mechanism is lower than the transition plate. The packaging bag is conveyed by the bag feeding device through the sensor on the transition plate and abuts against the baffle, so that the packaging bag is in the desired orientation. After the sensor detects the packaging bag, it transmits a signal to the controller. The controller drives the second driving device to drive the lower opening adsorption mechanism to rise and the upper opening adsorption mechanism to fall, so that both adsorb the bag opening.

[0024] The beneficial effects of this utility model are: automated bag opening, reducing labor costs.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 1 .

[0027] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 2 .

[0028] Figure 3 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 3 .

[0029] Figure 4 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 4 .

[0030] Figure 5 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 5 .

[0031] Figure 6 This is a three-dimensional schematic diagram of the seal opening component according to an embodiment of the present utility model.

[0032] Figure 7 This is a three-dimensional schematic diagram of the seal opening component without the base in an embodiment of the present invention. Figure 1 .

[0033] Figure 8 This is a three-dimensional schematic diagram of the seal opening component without the base in an embodiment of the present invention. Figure 2 .

[0034] Figure 9 This is a three-dimensional schematic diagram of the opening component according to an embodiment of the present utility model. Detailed Implementation

[0035] like Figure 1 —— Figure 9The packaging machine shown includes a bag opening mechanism, comprising a frame 1, a bag feeding device and a bag opening device. The bag feeding device includes a bag feeding conveyor belt 2 disposed within the frame 1. A pressure plate 3 is provided at the end of the bag feeding conveyor belt 2 in the conveying direction. The pressure plate 3 is disposed on a connecting rod 4, which is connected to the frame 1. A pressure roller 5 is also provided above the end of the bag feeding conveyor belt 2 in the conveying direction. The pressure roller 5 is rotatably disposed on the frame 1. A belt gap is formed between the pressure roller 5 and the bag feeding conveyor belt 2. The drive shaft of the bag feeding conveyor belt 2 is linked to the pressure roller 5 through a synchronous gear 6. Any synchronous gear 6 is driven by a drive motor 11. The bag opening device includes an opening assembly 7 for opening the bag opening and a seal opening assembly 8 for opening the seal. The bag feeding device sends an unopened packaging bag to the opening assembly 7. The opening assembly 7 opens the bag opening and keeps it open. The seal opening assembly 8 clamps the bag opening and further opens the bag opening until the seal is opened. The opening assembly 7 includes an upper opening adsorption mechanism 701 and a lower opening adsorption mechanism 702 arranged opposite each other. The upper opening adsorption mechanism 701 and the lower opening adsorption mechanism 702 are equipped with a lifting drive mechanism to drive them to move in opposite directions. Both the upper opening adsorption mechanism 701 and the lower opening adsorption mechanism 701 are composed of at least one vacuum suction cup device. The lifting drive mechanism includes a first lifting component and a second lifting component. The first lifting component drives the upper opening adsorption mechanism 701 to move up and down, and the second lifting component drives the lower opening adsorption mechanism 702 to move up and down. The first lifting component includes a first lifting cylinder 8 fixedly connected to the frame 1. The output end of the first lifting cylinder 8 is arranged to move up and down. The output end of the first lifting cylinder 8 is provided with a first linkage plate 9. One end of the first linkage plate 9 is hinged to the output end of the first lifting cylinder 8, and the other end is linked to a rotating rod 10. The rotating rod 10 is rotatably mounted on the frame 1. Second linkage plates 12 are respectively provided at both ends of the rotating rod 10. One end of each second linkage plate 12 is linked to the rotating rod 10, and the other end is provided with a linkage rod 13. Each linkage rod 13... One end is hinged to the corresponding second linkage plate 12, and the other end is hinged to a lifting slider 14 that can be raised and lowered. The lifting slider 14 slides through a lifting guide rod 15, which is fixedly connected to the frame 1. An installation rod 16 is connected between the two lifting sliders 15. The installation rod 16 is parallel to the rotating rod 10. The upper opening adsorption mechanism 701 is set on the installation rod 16. The first linkage plate 9 is set on the inner side of the side plate of the frame 1, and the second linkage plate 12, the lifting slider 14, and the linkage rod 13 are all set on the outer side of the side plate of the frame 1. The second lifting assembly includes a second lifting cylinder 17. The output end of the second lifting cylinder 17 is provided with a seat plate 18, and the lower opening adsorption mechanism 702 is set on the seat plate 18. The sealing strip opening assembly 8 includes a base 801. The base 801 is provided with clamping mechanisms that are arranged vertically opposite each other and can clamp one side of the bag opening. The clamping ends of the two clamping mechanisms can move towards or in opposite directions.The clamping mechanism includes a clamping plate 802 and a clamping head 803. The clamping plate 802 has a hinge seat 804 in the middle and a hinge part 805 at the end of the clamping head 803. The hinge part 805 is hinged to the hinge seat 804. The clamping head 803 and the clamping plate 802 facing the opening assembly 7 form a clamping cavity for clamping the bag opening. The hinge part 805 has a drive seat 806 at the end opposite to the clamping head 803. The drive seat 806 has a cylinder 807. The output shaft of the cylinder 807 passes through the drive seat 806 and can abut against the clamping plate 802. Two clamping plates 802 are hinged to each other at one end to form a clamping cavity. Each clamping plate 802 is provided with an opening drive device that drives the clamping cavities to move closer or further apart around the hinge point. Each clamping plate 802 has teeth 808 at its hinge point with the other clamping plate 802. The teeth 808 on one clamping plate 802 are located on both sides of one end of the clamping plate 802, and the teeth 808 on the other clamping plate 802 are located in the middle of one end of the clamping plate 802. All teeth 808 are arranged around the arc of the hinge point between the two clamping plates 802. The opening drive device includes meshing first gears 809. The first gear 809 meshes with the teeth 808 of a clamping plate 802, and the second gear 8010 meshes with the teeth 808 of another clamping plate 802. The first gear 809 or the second gear 8010 is equipped with a second drive motor 8011 that drives its reciprocating rotation. The second drive motor 8011 is fixedly connected to the base 801. The first gear 809 or the second gear 8010 is linked with a linkage gear 8012, and the output shaft of the second drive motor 8011 is linked to the linkage gear 8012. The base 801 is equipped with a displacement drive device that drives the base 801 to move towards the opening assembly 7. The displacement drive device includes a displacement drive cylinder 19 connected to the frame 1. The base 801 is slidably connected to the frame 1, and the output end of the displacement drive cylinder 19 is linked to the base 801. The frame 1 has a transition plate 20 between the end of the bag infeed conveyor belt 2 in the conveying direction and the opening assembly 7. The opening assembly 7 has baffles 21 that can be raised and lowered on both sides. The baffles 21 are equipped with a third lifting cylinder 22 to drive them to rise and fall. The third lifting cylinder 22 is connected to the frame 1. The baffles 21 can abut against the bag opening of the packaging bag conveyed by the bag infeed device, so that the bag opening is placed between the upper opening adsorption mechanism 701 and the lower opening adsorption mechanism 702. The transition plate 20 is equipped with a sensor 23 for detecting the passage of the bag opening. The sensor is a photoelectric sensor.

Claims

1. A bag opening mechanism of a packaging machine comprising a frame provided with a bag inlet device and a bag opening device, characterized in that: The bag opening device includes an opening assembly that opens the bag opening and a seal opening assembly that opens the seal. The bag feeding device delivers the unopened packaging bag to the opening assembly, which opens the bag opening and keeps it open. The seal opening assembly clamps the bag opening and further opens the bag opening until the seal is opened.

2. A bag opening mechanism for a packaging machine according to claim 1, characterized in that: The opening assembly includes an upper opening adsorption mechanism and a lower opening adsorption mechanism arranged opposite to each other. The upper opening adsorption mechanism and the lower opening adsorption mechanism are provided with a lifting drive mechanism to drive them to move in opposite directions or in the opposite direction.

3. The bag opening mechanism of a packaging machine according to claim 2, characterized in that: The lifting drive mechanism includes a first lifting component and a second lifting component. The first lifting component drives the upper opening adsorption mechanism to move up and down, and the second lifting component drives the lower opening adsorption mechanism to move up and down.

4. The bag opening mechanism of a packaging machine according to claim 3, characterized in that: The first lifting assembly includes a first lifting cylinder fixedly connected to the frame. The output end of the first lifting cylinder is vertically displaced. The output end of the first lifting cylinder is provided with a first linkage plate. One end of the first linkage plate is hinged to the output end of the first lifting cylinder, and the other end is linked to a rotating rod. The rotating rod is rotatably mounted on the frame. The two ends of the rotating rod are respectively provided with second linkage plates. One end of each second linkage plate is linked to the rotating rod, and the other end is provided with a linkage rod. One end of each linkage rod is hinged to the corresponding second linkage plate, and the other end is hinged to a lifting slider capable of lifting. The lifting slider is slidably passed through a lifting guide rod. The lifting guide rod is fixedly connected to the frame. An installation rod is connected between two lifting sliders. The installation rod is parallel to the rotating rod. The upper opening suction mechanism is provided on the installation rod. The first linkage plate is located inside the side plate of the frame, and the second linkage plate, lifting slider, and linkage rod are all located outside the side plate of the frame.

5. The bag opening mechanism of a packaging machine according to claim 3, characterized in that: The second lifting assembly includes a second lifting cylinder, the output end of which is provided with a base plate, and the lower opening adsorption mechanism is disposed on the base plate.

6. The bag opening mechanism of a packaging machine according to claim 1, characterized in that: The sealing strip opening assembly includes a base, which is provided with clamping mechanisms arranged vertically opposite each other and capable of clamping one side of the bag opening. The clamping ends of the two clamping mechanisms can move towards or away from each other.

7. The bag opening mechanism of a packaging machine according to claim 6, characterized in that: The clamping mechanism includes a clamping plate and a clamping head. The clamping plate has a hinge seat in the middle and a hinge part at the end of the clamping head. The hinge part is hinged to the hinge seat. The clamping head and the clamping plate at the end facing the opening assembly form a clamping cavity for clamping the bag opening. The hinge part is provided with a drive seat at the end opposite the clamping head. The drive seat is provided with a cylinder. The output shaft of the cylinder passes through the drive seat and can abut against the clamping plate.

8. The bag opening mechanism of a packaging machine according to claim 7, characterized in that: two... The clamping plates are hinged to each other at one end to form a clamping cavity. The two clamping plates are provided with an opening drive device that drives them to move closer or further apart around the hinge. Each clamping plate is provided with teeth at the hinge point with the other clamping plate. The opening drive device includes a first gear and a second gear that mesh with each other. The first gear meshes with the teeth of one clamping plate, and the second gear meshes with the teeth of the other clamping plate. The first gear or the second gear is provided with a second drive motor that drives it to reciprocate. The second drive motor is fixedly connected to the base. The first gear or the second gear is linked with a linkage gear. The output shaft of the second drive motor is linked with the linkage gear.

9. The bag opening mechanism of a packaging machine according to claim 8, characterized in that: The base is provided with a displacement driving device for driving the base to move toward the opening assembly. The displacement driving device includes a displacement driving cylinder connected to the frame. The base is slidably connected to the frame, and the output end of the displacement driving cylinder is linked to the base.

10. The bag opening mechanism of a packaging machine according to claim 1 or 2, characterized in that: The frame has a transition plate between the bag feeding device and the opening assembly. The opening assembly has adjustable baffles on both sides. Each baffle is equipped with a third lifting cylinder that drives its lifting. The third lifting cylinder is connected to the frame. The baffle can abut against the opening of the packaging bag delivered by the bag feeding device, so that the opening of the packaging bag is placed between the upper opening adsorption mechanism and the lower opening adsorption mechanism. The transition plate is equipped with a sensor to detect the passage of the opening of the packaging bag.

Images