Zip opening device for a bag packaging machine

Abstract

The utility model discloses a kind of opening zip fastener devices of bag packaging machine, including cam, drive connecting rod, power bar, fixed seat, swing arm, upper pull rod, lower pull rod, front sliding block and rear sliding block, suction disc mechanism and opening zip fastener mechanism are installed on upper pull rod and lower pull rod, drive connecting rod one end is rotatably connected with connecting seat, drive connecting rod other end is equipped with pulley, pulley is slidably connected with cam, swing arm is rotatably installed in fixed seat, power bar lower end is rotatably connected with drive connecting rod, power bar upper end is connected with swing arm, upper pull rod one end is rotatably connected with the upper portion of swing arm, upper pull rod other end front sliding block connection, lower pull rod one end is rotatably connected with the lower portion of swing arm, lower pull rod other end is connected with rear sliding block, fixed seat is installed with guide rod, and front sliding block and rear sliding block are movably sleeved on guide rod.The utility model is accurate and convenient to the opening operation of packaging bag, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a packaging machine, specifically a zipper opening device for a bag packaging machine. Background Technology

[0002] In bag packaging machines, the bag opening needs to be opened for filling with materials. During this process, the bag must first be secured. Currently, most machines use vacuum suction cups to hold the bag from both sides, then move backward to open the bag opening and facilitate filling. However, this structure, relying solely on vacuum suction cups to open the bag, is prone to problems where the bag may detach during the filling process as its weight increases. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a zipper opening device for a bag packaging machine.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A zipper-opening device for a bag packaging machine includes a cam, a drive linkage, a power rod, a fixed base, a swing arm, an upper pull rod, a lower pull rod, a front sliding block, and a rear sliding block. The upper and lower pull rods are each equipped with a suction cup mechanism and a zipper-opening mechanism. One end of the drive linkage is rotatably connected to a connecting base, and the other end is equipped with a pulley that is slidably connected to the cam. The swing arm is rotatably mounted within the fixed base. The lower end of the power rod is rotatably connected to the drive linkage, and the upper end is connected to the swing arm. One end of the upper pull rod is rotatably connected to the upper part of the swing arm, and the other end is connected to the front sliding block. One end of the lower pull rod is rotatably connected to the lower part of the swing arm, and the other end is connected to the rear sliding block. A guide rod is mounted on the fixed base, and both the front and rear sliding blocks are movably mounted on the guide rod.

[0006] The fixed base is fitted with a hollow sleeve, through which the power rod passes and extends into the fixed base.

[0007] The swing arm includes a vertical part and a horizontal part. The horizontal part is located in the middle area of ​​the vertical part and extends along the width direction of the vertical part. The upper pull rod is rotatably connected to the upper end of the vertical part, and the lower pull rod is rotatably connected to the lower end of the vertical part. A strip hole is provided in the horizontal part, and the upper end of the power rod is fixed in the strip hole.

[0008] The upper and lower pull rods are fitted with buffer rubber sleeves, one end of which is fixedly installed to the outer wall of the fixing seat.

[0009] A support plate is installed on the sliding block, with the lower end of the support plate extending below the sliding block. A suction cup mechanism is installed at the lower end of the support plate, and a zipper opening mechanism is connected to the support plate.

[0010] The suction cup mechanism includes a vacuum suction cup, a suction cup rod, and a suction cup spring. The suction cup spring is mounted on the suction cup rod, and the vacuum suction cup is movably mounted on one end of the suction cup rod. A connecting block is installed on the suction cup rod, and the connecting block is connected to a support plate. One end of the suction cup spring is connected to the connecting block, and the other end of the suction cup spring is connected to the vacuum suction cup.

[0011] The connecting block includes an upper connecting block and a lower connecting block. The lower connecting block is mounted on the suction cup rod. The lower part of the upper connecting block is provided with a horizontal adjustment hole, and the upper part of the upper connecting block is provided with a vertical adjustment hole. Screws are inserted into the horizontal adjustment hole and locked to the lower connecting block. Screws are inserted into the vertical adjustment hole and locked to the support plate.

[0012] The zipper opening mechanism includes a cylinder, a bag opening strip, and an insert seat. The upper end of the insert seat is connected to the output shaft of the cylinder. The bag opening strip is mounted on the insert seat, and the cylinder drives the bag opening strip to move up and down.

[0013] A stop block is installed at the lower end of the support plate, and a top post is installed on the stop block. The bag opening strip has an opening side arm and a limiting side arm that are connected to each other. The opening side arm and the limiting side arm form an L shape. The limiting side arm is rotatably connected to the plug seat through a rotating shaft. A tension spring is installed between the opening side arm and the limiting side arm. The tension spring is connected to the plug seat and exerts an upward tensile force on the opening side arm. The support plate is provided with a clearance groove, through which the limiting side arm passes. The top post is located below the limiting side arm to limit the downward movement of the limiting side arm.

[0014] The connector is equipped with a support rod, a slide rail plate is mounted on the support rod, and a slide groove is mounted on the abutment block. The slide rail plate is movably inserted into the slide groove.

[0015] This utility model has the following beneficial technical effects:

[0016] By combining the zipper opening mechanism with the suction cup mechanism, the bag opening is stable and can adapt to the opening of bags of different sizes, thus improving efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the fixing base of this utility model when it is open;

[0019] Figure 3 This is an assembly diagram of the zipper opening mechanism and suction cup mechanism of this utility model;

[0020] Figure 4 for Figure 3 Another perspective structural diagram;

[0021] Figure 5 for Figure 2 A partial structural diagram of the upper part.

[0022] Figure label:

[0023] Cam 1, drive linkage 2, power rod 3, sleeve 4, swing arm 5, horizontal part 51, vertical part 52, fixed seat 6, buffer rubber sleeve 7, upper pull rod 8, lower pull rod 9, opening link mechanism 10, front sliding block 11, rear sliding block 12, suction cup mechanism 13, packaging bag 14, connecting seat 15, guide rod 16, strip hole 17, support plate 18, upper connecting block 19, lower connecting block 20, horizontal adjustment hole 21, vertical adjustment hole 22, abutting block 23, top column 24, clearance groove 25, support rod 26, slide rail plate 27, cylinder 101, bag opening strip 102, plug-in seat 103, tension spring 104, bag opening side arm 1021, limit side arm 1022, vacuum suction cup 131, suction cup rod 132, suction cup spring 133. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that if terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0027] like Figure 1-5 As shown, a zipper-opening device for a bag packaging machine includes a cam 1, a drive linkage 2, a power rod 3, a fixed base 6, a swing arm 5, an upper pull rod 8, a lower pull rod 9, a front sliding block 11, and a rear sliding block 12. Suction cup mechanisms 13 and zipper-opening mechanisms 10 are installed on both the upper pull rod 8 and the lower pull rod 9. One end of the drive linkage 2 is rotatably connected to a connecting seat 15, which is fixedly mounted to the packaging machine. The other end of the drive linkage 2 is equipped with a pulley, which is slidably connected to the cam 1. The swing arm 5 is rotatably mounted in the fixed seat 6. The lower end of the power rod 3 is rotatably connected to the drive connecting rod 2, and the upper end of the power rod 3 is connected to the swing arm 5. One end of the upper pull rod 8 is rotatably connected to the upper part of the swing arm 5, and the other end of the upper pull rod 9 is connected to the front sliding block 11. One end of the lower pull rod 9 is rotatably connected to the lower part of the swing arm 5, and the other end of the lower pull rod 9 is connected to the rear sliding block 12. A guide rod 16 is installed on the fixed seat 6, and both the front sliding block 11 and the rear sliding block 12 are movably fitted on the guide rod 16. The cam 1 is connected to an external motor through a rotating shaft, and the external motor drives the cam to rotate. For the structure of the cam, the outer peripheral sidewall of the cam can form a concave-convex structure, and the pulley of the drive connecting rod contacts the inner peripheral wall of the cam. As the cam rotates, the pulley produces upward and downward movement changes; or a sliding groove is formed inside the cam, and a non-circular base is formed in the center. The pulley of the drive connecting rod is located in the sliding groove and slides in contact with the base.

[0028] The rotation of cam 1 drives the power rod 3 to reciprocate up and down. The swing arm 5 pulls the upper pull rod 8 and the lower pull rod 9 to move back and forth, thereby driving the front sliding block 11 and the rear sliding block 12 to move closer or further away from each other along the guide rod 16, so as to realize the position change of the suction cup mechanism and the zipper opening mechanism.

[0029] The fixed base 6 is fitted with a hollow sleeve 4. The power rod 3 passes through the sleeve 4 and extends into the fixed base 6. The sleeve has a large diameter, allowing the power rod to undergo a certain range of displacement within the sleeve. The sleeve also restricts the range of motion of the power rod and provides protection for it.

[0030] The swing arm 5 includes a vertical portion 52 and a horizontal portion 51. The horizontal portion 51 is located in the middle region of the vertical portion 52 and extends along the width direction of the vertical portion. The upper pull rod 8 is rotatably connected to the upper end of the vertical portion 52, and the lower pull rod 9 is rotatably connected to the lower end of the vertical portion 52. The horizontal portion 51 has a slotted hole 17, and the upper end of the power rod 3 is fixed in the slotted hole 17. Through the slotted hole 17, the installation position of the power rod can be changed to match the movement stroke of the cam. Figure 5 The indicated direction is for reference. When the power rod 3 moves upward and lifts up, it drives the horizontal part 51 of the swing arm 5 to rotate upward, causing the swing arm 5 to rotate counterclockwise. The upper and lower ends of the vertical part 52 move in opposite directions simultaneously. The upper end of the vertical part 52 pushes the upper pull rod 8, causing the front sliding block 11 to move to the left. At the same time, the lower end of the vertical part 52 pulls the lower pull rod 9, causing the rear sliding block 12 to move to the right. The front sliding block 11 and the rear sliding block 13 move away from each other, that is, the suction cup mechanism 13 on the front sliding block 11 and the rear sliding block 12... The zipper opening mechanisms 10 are all far apart; when the power rod 3 moves downward, it pulls down the horizontal part 51 of the swing arm 5, causing the swing arm 5 to rotate clockwise. The upper and lower ends of the vertical part 52 move in opposite directions at the same time. The lower end of the vertical part 52 pushes the pull rod 9 to move the rear sliding block 12 to the left. The upper end of the vertical part 52 pulls the pull rod 8 to move the front sliding block 11 to the right, so that the front sliding block 11 and the rear sliding block 12 move closer to each other, that is, the two suction cup mechanisms 13 and the zipper opening mechanism 10 move closer to each other.

[0031] The upper pull rod 8 and the lower pull rod 9 are fitted with buffer rubber sleeves 7. One end of the buffer rubber sleeve 7 is fixedly installed to the outer wall of the fixed seat 6, which forms a buffer effect when moving and also plays a role in limiting the stroke.

[0032] Support plates 18 are installed on both the front and rear sliding blocks. The lower end of the support plates 18 extends below the front and rear sliding blocks. The suction cup mechanism 13 is installed at the lower end of the support plates 18. The zipper opening mechanism 10 is connected to the support plates 18.

[0033] The suction cup mechanism 13 includes a vacuum suction cup 131, a suction cup rod 132, and a suction cup spring 133. The suction cup spring 133 is fitted onto the suction cup rod 132. The vacuum suction cup 131 is movably fitted onto one end of the suction cup rod 132. A connecting block is installed on the suction cup rod 132, and the connecting block is connected to the support plate 18. One end of the suction cup spring 133 is connected to the connecting block, and the other end of the suction cup spring 133 is connected to the vacuum suction cup 131. When the vacuum suction cup 131 is subjected to a pushing force, it compresses the suction cup spring 133, causing it to move along the suction cup rod 132. The suction cup spring 133 acts as a buffer. The other end of the suction cup rod 132 is connected to an external vacuum pipe to allow air intake and exhaust, thereby enabling the vacuum suction cup to adsorb and detach, thus using the vacuum suction cup to adsorb the packaging bag.

[0034] The connecting block includes an upper connecting block 19 and a lower connecting block 20. The lower connecting block 20 is mounted on the suction cup rod 132. The lower part of the upper connecting block 19 has a horizontal adjustment hole 21, and the upper part of the upper connecting block 19 has a vertical adjustment hole 22. A screw is inserted into the horizontal adjustment hole 21 and locked to the lower connecting block 20. A screw is inserted into the vertical adjustment hole 22 and locked to the support plate 18. Using the horizontal adjustment hole 21 of the upper connecting block 19, the horizontal installation position of the upper connecting block 19 relative to the lower connecting block 20 can be adjusted, thereby changing the horizontal position of the suction cup mechanism 13 to adapt to the suction and clamping of packaging bags of different widths. Using the vertical adjustment hole, the vertical height position of the suction cup mechanism can be adjusted to adapt to the processing of packaging bags of different heights. Horizontal refers to the direction perpendicular to the guide rod, that is, the width direction of the packaging bag; vertical refers to the height extension direction of the support plate.

[0035] The zipper opening mechanism 10 includes a cylinder 101, a bag opening strip 102, and a connector 103. The upper end of the connector 103 is connected to the output shaft of the cylinder 101. The bag opening strip 102 is mounted on the connector 103. The cylinder 101 drives the bag opening strip 102 to move up and down. A stop block 23 is installed at the lower end of the support plate 18, and a top post 24 is installed on the stop block 23. The opening strip 102 has an opening side arm 1021 and a limiting side arm 1022 connected to each other, forming an L-shape. The limiting side arm 1022 is rotatably connected to the insertion seat 103 via a pivot. A tension spring 104 is installed between the opening side arm 1021 and the limiting side arm 1022, and the tension spring 104 is connected to the insertion seat 103. The tension spring 104 exerts an upward tensile force on the opening side arm 1021. The support plate 18 is provided with a clearance groove 25, through which the limiting side arm 1022 passes. The top post 24 is located below the limiting side arm 1022 to limit the downward travel of the limiting side arm 1022. The lower end of the clearance groove 25 extends to the lower end of the support plate 18 to form an opening structure. A support rod 26 is installed on the connector 23, and a slide rail plate 27 is installed on the support rod 26. A sliding groove is installed on the abutment block 23. The slide rail plate 27 is movably inserted into the sliding groove. The cooperation between the slide rail plate 27 and the sliding groove ensures the guiding and accuracy of the up-and-down movement and prevents wobbling. The side wall of the abutment block is used to support the packaging bag, while the top column is used to support the limiting side arm, thereby causing the bag opening strip to rotate. When the limiting side arm rotates upward, the bag opening side arm rotates downward simultaneously. The rotation directions of the bag opening side arm and the limiting side arm are opposite, that is, when one goes up, the other goes down synchronously.

[0036] In the initial state, the output shaft of the cylinder is not extended. At this time, the bag opening strip 102 is driven by the output shaft of the cylinder 101 to be located above the clearance groove 25. The opening side arm of the bag opening strip is tilted upward by the tension of the tension spring, and the corresponding limiting side arm tilts downward but does not contact the top post. The packaging bag that has not yet been opened is sent between the two suction cup mechanisms by an external robot or other mechanism.

[0037] by Figure 5 The directions of each mechanism shown are used as reference directions. The external motor drives the cam to rotate, causing the power rod to move down and drive the swing arm to rotate clockwise. The upper and lower pull rods drive the front and rear sliding blocks to move closer to each other, thereby bringing the two suction cup mechanisms closer to each other until the vacuum suction cup sticks to the packaging bag and adheres to it.

[0038] Then, as the cam 1 continues to rotate, the power rod 3 moves from bottom to top, causing the swing arm 5 to rotate counterclockwise. Through the upper pull rod 8 and the lower pull rod 9, the front sliding block 11 and the rear sliding block 12 move away from each other, and the vacuum suction cup 131 sucks on the packaging bag 14, thus opening a small opening in the packaging bag.

[0039] Next, the cylinder 101 drives the bag opening strip 102 to move down, causing the bag opening side arm 1021 to extend into the packaging bag 14. During the downward movement, the cam 1 continues to rotate. At this time, the front sliding block 11 and the rear sliding block 12 will continue to move away from each other, causing the packaging bag 14 to open a larger opening until the outer wall of the packaging bag 14 is in contact with the side wall of the abutment block 23. At this time, the cam 1 stops rotating and remains stationary.

[0040] The cylinder 101 continues to drive the opening strip 102 downward, simultaneously moving the support rod 26 downward and the slide rail 27 downward along the slide groove to ensure the stability of the movement. As the opening strip 102 continues to move downward, until the limiting side arm 1022 touches the top post 24, the opening strip 102 continues to move downward. The limiting side arm 1022 is restricted from moving downward by the top post 24 and is thus restricted. The opening strip 102 rotates, and the opening side arm 1021 rotates upward until it touches the inner wall of the packaging bag 14. The opening side arm 1021 presses against the abutment block 23 from inside the packaging bag 14, thereby using the vacuum suction cup and the opening side arm to clamp the side of the packaging bag.

[0041] As the cam 1 continues to rotate, the front sliding block 11 and the rear sliding block 12 continue to move away from each other. The opening strip 102 and the vacuum suction cup 131 clamp the side of the packaging bag, making the opening of the packaging bag larger, thereby achieving the purpose of tearing open the zipper on the packaging bag.

[0042] Once completed, the vacuum suction cup releases its grip on the packaging bag, the cylinder rises, causing the bag-opening strip to rise as well. The bag-opening side arm no longer presses against the side of the packaging bag, transporting it to the designated position. The bag-opening strip returns to its original position under the tension of the spring, and the vacuum suction cup also returns to its original position under the action of the suction cup spring, preparing for the next operation.

[0043] It should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zipper-opening device for a bag packaging machine, characterized in that, It includes a cam, drive linkage, power rod, fixed base, swing arm, upper pull rod, lower pull rod, front sliding block, and rear sliding block. The upper and lower pull rods are equipped with suction cup mechanisms and zipper opening mechanisms. One end of the drive linkage is rotatably connected to the connecting base, and the other end of the drive linkage is equipped with a pulley, which is slidably connected to the cam. The swing arm is rotatably installed in the fixed base. The lower end of the power rod is rotatably connected to the drive linkage, and the upper end of the power rod is connected to the swing arm. One end of the upper pull rod is rotatably connected to the upper part of the swing arm, and the other end of the upper pull rod is connected to the front sliding block. One end of the lower pull rod is rotatably connected to the lower part of the swing arm, and the other end of the lower pull rod is connected to the rear sliding block. A guide rod is installed on the fixed base, and the front and rear sliding blocks are movably fitted on the guide rod.

2. The zipper opening device of the bag packaging machine according to claim 1, characterized in that, The fixed base is fitted with a hollow sleeve, through which the power rod passes and extends into the fixed base.

3. The zipper opening device of the bag packaging machine according to claim 1, characterized in that, The swing arm includes a vertical part and a horizontal part. The horizontal part is located in the middle area of ​​the vertical part and extends along the width direction of the vertical part. The upper pull rod is rotatably connected to the upper end of the vertical part, and the lower pull rod is rotatably connected to the lower end of the vertical part. A strip hole is provided in the horizontal part, and the upper end of the power rod is fixed in the strip hole.

4. The zipper opening device of the bag packaging machine according to claim 1, characterized in that, The upper and lower pull rods are fitted with buffer rubber sleeves, one end of which is fixedly installed to the outer wall of the fixing seat.

5. The zipper opening device of the bag packaging machine according to claim 1, characterized in that, A support plate is installed on the sliding block, with the lower end of the support plate extending below the sliding block. A suction cup mechanism is installed at the lower end of the support plate, and a zipper opening mechanism is connected to the support plate.

6. The zipper opening device of the bag packaging machine according to claim 5, characterized in that, The suction cup mechanism includes a vacuum suction cup, a suction cup rod, and a suction cup spring. The suction cup spring is mounted on the suction cup rod, and the vacuum suction cup is movably mounted on one end of the suction cup rod. A connecting block is installed on the suction cup rod, and the connecting block is connected to a support plate. One end of the suction cup spring is connected to the connecting block, and the other end of the suction cup spring is connected to the vacuum suction cup.

7. The zipper opening device of the bag packaging machine according to claim 6, characterized in that, The connecting block includes an upper connecting block and a lower connecting block. The lower connecting block is mounted on the suction cup rod. The lower part of the upper connecting block is provided with a horizontal adjustment hole, and the upper part of the upper connecting block is provided with a vertical adjustment hole. Screws are inserted into the horizontal adjustment hole and locked to the lower connecting block. Screws are inserted into the vertical adjustment hole and locked to the support plate.

8. The zipper opening device of the bag packaging machine according to claim 5, characterized in that, The zipper opening mechanism includes a cylinder, a bag opening strip, and an insert seat. The upper end of the insert seat is connected to the output shaft of the cylinder. The bag opening strip is mounted on the insert seat, and the cylinder drives the bag opening strip to move up and down.

9. The zipper opening device of the bag packaging machine according to claim 8, characterized in that, A stop block is installed at the lower end of the support plate, and a top post is installed on the stop block. The bag opening strip has an opening side arm and a limiting side arm that are connected to each other. The opening side arm and the limiting side arm form an L shape. The limiting side arm is rotatably connected to the plug seat through a rotating shaft. A tension spring is installed between the opening side arm and the limiting side arm. The tension spring is connected to the plug seat and exerts an upward tensile force on the opening side arm. The support plate is provided with a clearance groove, through which the limiting side arm passes. The top post is located below the limiting side arm to limit the downward movement of the limiting side arm.

10. The zipper opening device of the bag packaging machine according to claim 8, characterized in that, The connector is equipped with a support rod, a slide rail plate is mounted on the support rod, and a slide groove is mounted on the abutment block. The slide rail plate is movably inserted into the slide groove.

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