Scissor opening sealing mechanism

Abstract

The scissor opening sealing mechanism comprises a servo motor arranged on one outer side of a plate frame, a bearing is arranged on the same side wall of the plate frame, a first rotating shaft penetrates through the bearing, a coupler is connected between the output end of the servo motor and one end of the first rotating shaft, a swing rod is arranged at the other end of the first rotating shaft, and one end of the swing rod is in driving connection with the first rotating shaft. The other end of the swing rod is connected with a connecting rod, the swing rod is in driving connection with an upper sealing assembly and a lower sealing assembly through the connecting rod, guide seats are arranged on the inner walls of the two opposite sides of the plate frame respectively, and a first shaft pin is arranged between the two guide seats. According to the sealing device, only one servo motor is adopted to drive the two sealing heads to be closed to automatically seal the packaging bag, the traditional design that two air cylinders are needed to drive the two sealing heads to seal the packaging bag is replaced, and the sealing device is particularly suitable for being applied to rotating disc type sealing equipment; the structure is simple, the maintenance is convenient, the practicability is high, the production cost is reduced, and the equipment volume is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sealing machines, in particular to a scissor-edge sealing mechanism. Background Art

[0002] After the items are packaged, the packaging bags need to be sealed. Traditionally, the product packaging bags are sealed using an assembly line operation. The packaging bag sealing station mainly uses two relatively set cylinder-driven heads to seal the packaging bags. The equipment structure of the assembly line layout is complex. It needs to be equipped with two cylinder-driven heads to operate to seal the packaging bags, which makes it have the disadvantages of large size, high production cost and inconvenient maintenance. It is also not suitable for application to packaging equipment with a turntable layout, so it also has the problems of large usage limitations and poor versatility. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a scissor-shaped sealing mechanism.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: the scissor-mouth sealing mechanism includes a plate frame, a servo motor is provided on one outer side of the plate frame, a bearing is provided on the same side wall of the plate frame, a first rotating shaft is provided through the bearing, a coupling is connected between the output end of the servo motor and one end of the first rotating shaft, a rocker rod is provided on the other end of the first rotating shaft, one end of the rocker rod is drive-connected to the first rotating shaft, and the other end of the rocker rod is respectively drive-connected to the upper sealing assembly and the lower sealing assembly through a connecting rod, guide seats are respectively provided on the inner walls on both sides of the opposite sides of the plate frame, a first shaft pin is provided between the two guide seats, and the connecting rod is respectively drive-connected to the upper sealing assembly and the lower sealing assembly through the first shaft pin.

[0005] With the above technical solution, the servo motor drives the rocker arm, the connecting rod and the first shaft pin to rotate to drive the upper sealing assembly and the lower sealing assembly to close, thereby sealing the packaging bag.

[0006] Preferably, grooves are provided transversely on the two opposite inner side surfaces of the two guide seats, and guide wheels are provided on both ends of the first shaft pin.

[0007] By adopting the above technical solution, the corresponding guide wheel rolls back and forth in the groove of the guide seat on the same side, so that the first shaft pin can make a back and forth linear motion on the grooves of the two guide seats through the guide wheels on its two ends.

[0008] Preferably, the upper sealing assembly includes a first flap, one end of the first flap is rotatably connected to the connecting rod via a first axle pin, an upper clamping arm is provided on the other end of the first flap, one end of the upper clamping arm is rotatably connected to the first flap via a second axle pin, an upper head is provided on the other end of the upper clamping arm, a second rotating shaft is provided transversely through the upper clamping arm, and the second rotating shaft is rotatably connected to the two side walls of the plate frame.

[0009] By adopting the above technical solution, the first flap drives the upper clamping arm to move downward around the second rotating shaft as a lever to drive the upper head to move downward.

[0010] Preferably, the lower sealing assembly includes a second flap, one end of the second flap is rotatably connected to the connecting rod through a first axle pin, a lower clamping arm is provided on the other end of the second flap, one end of the lower clamping arm is rotatably connected to the second flap through a third axle pin, a lower head is provided on the other end of the lower clamping arm, a third rotating shaft is provided transversely through the lower clamping arm, and the third rotating shaft is rotatably connected to the two side walls of the plate frame.

[0011] By adopting the above technical solution, the second flap drives the lower clamping arm to move upward around the third rotating shaft as a lever to drive the lower head to move upward.

[0012] Preferably, heating pipes are provided in both the upper head and the lower head.

[0013] By adopting the above technical solution, the upper and lower sealing heads are heated to a predetermined temperature by built-in heating tubes to seal the packaging bag. The design of the heating tubes enables the upper and lower sealing heads to have the advantages of high sealing efficiency and good sealing effect.

[0014] Preferably, the upper sealing head and the lower sealing head are arranged opposite to each other, and the upper sealing head and the lower sealing head are closed to clamp the opening of the packaging bag for sealing.

[0015] By adopting the above technical solution, it is possible to control the synchronous opening and closing movement of the upper head and the lower head by using only one servo motor, thereby achieving the purpose of simplifying the structure, reducing production costs and reducing maintenance costs.

[0016] Compared with the existing technology, the beneficial effects of the present invention are as follows: it drives the rocker arm to rotate with the axis of the first rotating shaft as the center of the circle through the servo motor, and the rocker arm drives the first shaft pin through the connecting rod to drive the two guide wheels to move back and forth on the grooves of the two guide seats respectively, and the first shaft pin drives the first flap and the second flap to open and close each other, and the first flap drives the upper clamping arm to perform a lever movement around the second rotating shaft under the drive of the first shaft pin, and at the same time, the second flap drives the lower clamping arm to perform a lever movement around the third rotating shaft under the drive of the first shaft pin, and when the upper head and the lower head are closed to each other, the bag mouth of the packaging bag can be clamped, and since the upper head and the lower head are heated to a predetermined temperature by their built-in heating tubes respectively, the bag can be packaged when the upper head and the lower head are closed to each other The sealing of the mouth of the packaging bag is realized by using only one servo motor (one power source) to drive the two heads to close and automatically complete the sealing of the packaging bag, so as to solve the problems that the traditional assembly line layout equipment needs to use two cylinders (two power sources) to drive the two heads to seal the packaging bag, resulting in complex structure, large volume, high production cost, inconvenient maintenance, large usage limitations, poor versatility and unsuitability for application to turntable layout packaging equipment. The utility model is particularly suitable for use in turntable sealing equipment, and reduces the production cost and the volume of the equipment, so that it has the advantages of simple structure, easy maintenance, strong practicality, strong versatility, high sealing efficiency and good sealing effect, which is beneficial to industrial development. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0018] Figure 1 It is a three-dimensional diagram of the scissor-shaped sealing mechanism of the present invention.

[0019] Figure 2 These are three-dimensional views of the scissor-shaped sealing mechanism of the present invention from different directions.

[0020] Figure 3 This is a three-dimensional diagram of the internal structure of the scissor-shaped sealing mechanism of the utility model with the side walls removed.

[0021] Figure 4 This is a three-dimensional diagram of the scissor-shaped sealing mechanism of the present invention with the side walls and plate frame removed. DETAILED DESCRIPTION

[0022] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] In this embodiment, refer to Figures 1 to 4 As shown, the scissor-mouth sealing mechanism of the present invention includes a plate frame 1, a servo motor 2 is provided on the outer side of the plate frame 1, a bearing 3 is provided on the same side wall of the plate frame 1, a first rotating shaft 4 is provided through the bearing 3, a coupling 5 is connected between the output end of the servo motor 2 and one end of the first rotating shaft 4, a rocker rod 6 is provided on the other end of the first rotating shaft 4, one end of the rocker rod 6 is drive-connected to the first rotating shaft 4, and the other end of the rocker rod 6 is connected and installed with a connecting rod 7, the rocker rod 6 is respectively driven and connected to the upper sealing assembly 8 and the lower sealing assembly 9 through the connecting rod 7, guide seats 10 are respectively provided on the inner walls on both sides of the opposite sides of the plate frame 1, a first axle pin 11 is provided between the two guide seats 10, and the connecting rod 7 is respectively drive-connected to the upper sealing assembly 8 and the lower sealing assembly 9 through the first axle pin 11.

[0025] In one embodiment, grooves 12 are transversely formed on two opposite inner side surfaces of the two guide seats 10 , and guide wheels 13 are respectively provided on both ends of the first shaft pin 11 .

[0026] In one embodiment, the upper sealing assembly 8 includes a first flap 81, one end of the first flap 81 is rotatably connected to the connecting rod 7 through a first axle pin 11, an upper clamping arm 82 is provided on the other end of the first flap 81, one end of the upper clamping arm 82 is rotatably connected to the first flap 81 through a second axle pin 83, an upper head 84 is provided on the other end of the upper clamping arm 82, and a second rotating shaft 85 is provided transversely through the upper clamping arm 82, and the second rotating shaft 85 is rotatably connected to the two side walls of the plate frame 1.

[0027] In one embodiment, the lower sealing assembly 9 includes a second flap 91, one end of the second flap 91 is rotatably connected to the connecting rod 7 through a first axle pin 11, and a lower clamping arm 92 is provided on the other end of the second flap 91, one end of the lower clamping arm 92 is rotatably connected to the second flap 91 through a third axle pin 93, and a lower head 94 is provided on the other end of the lower clamping arm 92, and a third rotating shaft 95 is provided transversely through the lower clamping arm 92, and the third rotating shaft 95 is rotatably connected to the two side walls of the plate frame 1.

[0028] In one embodiment, heating pipes 86 are provided in both the upper sealing head 84 and the lower sealing head 94 .

[0029] In one embodiment, the upper sealing head 84 and the lower sealing head 94 are arranged opposite to each other, and the upper sealing head 84 and the lower sealing head 94 are closed to clamp the opening of the packaging bag to seal it.

[0030] In one embodiment, the working principle of the scissor-mouth sealing mechanism is as follows: the servo motor 2 drives the rocker arm 6 to rotate with the axis of the first rotating shaft 4 as the center of the circle, and the rocker arm 6 drives the first shaft pin 11 through the connecting rod 7 to drive the two guide wheels 13 to move back and forth on the grooves 12 of the two guide seats 10, so that the first shaft pin 11 can drive the first flap 81 and the second flap 91 to open and close each other. The first flap 81 drives the upper clamping arm 82 to perform a lever movement around the second rotating shaft 85 under the drive of the first shaft pin 11. At the same time, the second flap 91 drives the lower clamping arm 92 to perform a lever movement around the third rotating shaft 95 under the drive of the first shaft pin 11. The upper sealing head 84 and the lower sealing head 94 are respectively heated to a predetermined temperature by their built-in heating tubes 86. Then, the bag mouth of the packaging bag is moved between the upper sealing head 84 and the lower sealing head 94 in the opened state. When the upper clamping arm 82 and the lower clamping arm 92 respectively drive the upper sealing head 84 and the lower sealing head 94 to close, the bag mouth of the packaging bag is moved between the upper sealing head 84 and the lower sealing head 94. When the bag opening is tightened, the bag opening can be automatically sealed. Only one servo motor (one power source) is used to drive the two heads to close and automatically seal the bag, replacing the traditional design that requires two cylinders (two power sources) to drive the two heads to seal the bag. It is not only suitable for use in sealing equipment with an assembly line layout, but also particularly suitable for use in turntable sealing equipment, and reduces production costs and equipment size, making it have the advantages of simple structure, easy maintenance, strong practicality, strong versatility, high sealing efficiency and good sealing effect. It effectively solves the problems of traditional assembly line layout equipment that requires two cylinders to drive two heads to seal the bag, which results in complex structure, large size, high production cost, inconvenient maintenance, large usage limitations, poor versatility and unsuitability for application to turntable layout packaging equipment.

[0031] The above embodiment is only an example of the present invention and is not intended to limit the implementation and scope of rights of the present invention. Any technical solution that is identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. The scissor-shaped sealing mechanism includes a plate frame, characterized in that: A servo motor is provided on the outer side of the plate frame, a bearing is provided on the same side wall of the plate frame, a first rotating shaft is provided through the bearing, a coupling is connected between the output end of the servo motor and one end of the first rotating shaft, a rocker arm is provided on the other end of the first rotating shaft, one end of the rocker arm is drive-connected to the first rotating shaft, and the other end of the rocker arm is drive-connected to the upper sealing assembly and the lower sealing assembly through a connecting rod, guide seats are respectively provided on the inner walls on both sides of the opposite sides of the plate frame, a first shaft pin is provided between the two guide seats, and the connecting rod is drive-connected to the upper sealing assembly and the lower sealing assembly through the first shaft pin.

2. The scissor-shaped sealing mechanism according to claim 1, characterized in that: Grooves are transversely provided on the two opposite inner side surfaces of the two guide seats, and guide wheels are respectively provided on the two end portions of the first shaft pin.

3. The scissor-shaped sealing mechanism according to claim 1, characterized in that: The upper sealing assembly includes a first flap, one end of the first flap is rotatably connected to the connecting rod through a first shaft pin, an upper clamping arm is provided on the other end of the first flap, one end of the upper clamping arm is rotatably connected to the first flap through a second shaft pin, an upper head is provided on the other end of the upper clamping arm, a second rotating shaft is provided transversely through the upper clamping arm, and the second rotating shaft is rotatably connected to the two side walls of the plate frame.

4. The scissor-shaped sealing mechanism according to claim 3, characterized in that: The lower sealing assembly includes a second flap, one end of the second flap is rotatably connected to the connecting rod through a first shaft pin, a lower clamping arm is provided on the other end of the second flap, one end of the lower clamping arm is rotatably connected to the second flap through a third shaft pin, a lower head is provided on the other end of the lower clamping arm, a third rotating shaft is provided transversely through the lower clamping arm, and the third rotating shaft is rotatably connected to the two side walls of the plate frame.

5. The scissor-shaped sealing mechanism according to claim 4, characterized in that: Heating pipes are provided in both the upper and lower heads.

6. The scissor-shaped sealing mechanism according to claim 4, characterized in that: The upper sealing head and the lower sealing head are arranged opposite to each other, and the upper sealing head and the lower sealing head are closed to clamp the opening of the packaging bag for sealing.

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