High-speed longitudinal sealing mechanism

Abstract

The utility model discloses a high-speed longitudinal sealing mechanism which comprises a lifting device, a translation device, a rotating seat, a rotating arm and a longitudinal sealing mechanism, and a locking mechanism is arranged on the rotating arm. The lifting device drives the longitudinal sealing mechanism to ascend and descend, so that the longitudinal sealing mechanism can move along with a packaging bag and conduct sealing in the moving process, the sealing efficiency of the packaging bag is effectively improved, and the longitudinal sealing requirement of the high-speed continuous packaging machine can be met; the translation device can adjust the position of the longitudinal sealing mechanism and is compatible with packaging bags of various specifications; in addition, rotary opening and closing of the longitudinal sealing mechanism are achieved through the rotating arm, debugging is convenient, and the locking mechanism fixes the rotating arm so that stability in the high-speed running process can be guaranteed. The vertical sealing device is simple in structure, small in overall size, high in flexibility and convenient to install and maintain, vertical sealing efficiency can be effectively improved, and cost of the packaging machine is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging equipment technical field more specifically, especially, it relates to a high -speed longitudinal seal mechanism. BACKGROUND

[0002] The longitudinal seal mechanism is one of the key components of the packaging machine, mainly used for sealing the longitudinal edge of the packaging material during the packaging process to form a complete packaging container. It is usually composed of heating device, pressure device, transmission device and other parts. At present, the existing longitudinal seal mechanism is mostly fixedly installed in the rack of the packaging machine through the mounting seat or the mounting plate, so that the overall structure is relatively large, occupies more space and is not easy to be lightweight, and the structure is relatively complex, and it is not flexible to adjust, and it is not suitable for the demand of high-speed sealing packaging. SUMMARY

[0003] The utility model provides a kind of high-speed longitudinal seal mechanism to solve the problem raised in above background technique. To achieve the above purpose, the utility model provides the following technical scheme: a kind of high-speed longitudinal seal mechanism, including lifting device, translation device, rotating seat, rotating arm and longitudinal seal mechanism;The translation device is connected with the lifting device, and the lifting device is used to drive the translation device to lift;The rotating seat is connected with the translation device, and the translation device is used to adjust the position of the rotating seat;Rotating arm and the rotating seat can be rotatably connected, and the rotating arm is equipped with locking mechanism, and the locking mechanism is used to lock the rotating arm and install on the rotating seat;The longitudinal seal mechanism is connected with the rotating arm.

[0004] Preferably, the lifting device includes a lifting frame, and a slidable sliding seat is provided on the lifting frame;One end of the lifting frame is provided with a driving pulley and a speed reducer motor, and the other end is provided with a driven pulley;The driving pulley and the driven pulley are connected by a synchronous belt, and the speed reducer motor is in transmission connection with the driving pulley;The synchronous belt is connected with the sliding seat and drives the sliding seat to move on the lifting frame.

[0005] Preferably, the bottom of the lifting frame is provided with a U-shaped groove, and the two side walls of the U-shaped groove are respectively provided with a sliding groove, and a pulley shaft is provided on the driven pulley, and the two ends of the pulley shaft are respectively inserted into the sliding grooves of the two side walls of the U-shaped groove;The opening of the sliding groove is provided with an end cover, and the end cover is provided with an adjusting screw hole, and a rotatable adjusting screw is arranged in the adjusting screw hole, and the pulley shaft is provided with a threaded hole matched with the adjusting screw, and the adjusting screw and the threaded hole are in threaded connection.

[0006] Preferably, the lifting frame comprises a top plate, a bottom plate and a pair of mutually parallel linear optical axes, both ends of the linear optical axes are connected with the top plate and the bottom plate respectively; the outer wall of the linear optical axis is slidably connected with a linear bearing, the linear bearing is connected with the sliding seat; the side surface of the sliding seat is provided with a toothed plate and a cover plate, the toothed plate is engaged with the synchronous belt, and the cover plate fixes the synchronous belt on the toothed plate.

[0007] Preferably, the translation device comprises a pair of mutually parallel side plates, a pair of guide shafts is arranged between the pair of side plates; the side plate is connected with the sliding seat; the rotating seat is slidably connected between the guide shaft; the rotating seat is provided with a locking hole, the first fastening handle is threadedly connected on the locking hole, and the first fastening handle is used to lock and install the rotating seat on the guide shaft.

[0008] Preferably, the locking mechanism is provided with a limiting module, and the limiting module is arranged opposite to the rotating arm.

[0009] Preferably, the side surface of the lifting frame is provided with a detection support, the detection support is provided with an upper installation groove and a lower installation groove, a first proximity switch is installed in the upper installation groove, and a second proximity switch is installed in the lower installation groove.

[0010] Preferably, the end of the rotating arm is provided with a rotating shaft; both ends of the rotating shaft are respectively provided with tapered roller bearings, and the rotating shaft is connected with the rotating seat through the tapered roller bearings.

[0011] Preferably, the locking mechanism comprises two locking units, and the two locking units are respectively arranged at the top and bottom of the rotating arm; the locking unit comprises a locking block and a second fastening handle, the locking block is connected with the rotating seat through bolts; the second fastening handle is threadedly connected with the rotating arm; the locking block is provided with an arc-shaped groove matched with the second fastening handle.

[0012] Preferably, the longitudinal sealing mechanism comprises a longitudinal sealing frame, a gas cylinder, a left sealing roller and a right sealing roller; a pair of mutually parallel sliding rods are arranged in the longitudinal sealing frame, a push seat is slidably arranged on the sliding rod; the gas cylinder is arranged outside the longitudinal sealing frame, and the piston rod of the gas cylinder is connected with the push seat; the left sealing roller is arranged on the push seat; the right sealing roller is arranged on the inner side of the longitudinal sealing frame and is arranged opposite to the left sealing roller.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a lifting device to drive the vertical sealing mechanism, enabling the mechanism to follow the movement of the packaging bag and seal it during movement, effectively improving the sealing efficiency of the packaging bag and meeting the vertical sealing requirements of high-speed continuous packaging machines. The translation device can adjust the position of the vertical sealing mechanism, accommodating various packaging bag sizes. Furthermore, the rotating arm enables the vertical sealing mechanism to rotate and open, facilitating easy adjustment, and the locking mechanism ensures stability during high-speed operation. This invention has a simple structure, compact size, high flexibility, and is convenient to install and maintain, effectively improving vertical sealing efficiency and reducing the cost of packaging machines. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of the high-speed longitudinal sealing mechanism according to another perspective of an embodiment of the present utility model;

[0016] Figure 3 This is a front view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0017] Figure 4 This is a rear view of the high-speed longitudinal sealing mechanism according to an embodiment of the present invention;

[0018] Figure 5 This is a cross-sectional view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0019] Figure 6 This is a cross-sectional view of the high-speed longitudinal sealing mechanism according to an embodiment of the present utility model;

[0020] exist Figures 1 to 6 In the diagram, the correspondence between the component names and the drawing numbers is as follows:

[0021] 1--Lifting device, 11--Lifting frame, 111--Top plate, 112--Bottom plate, 113--Linear optical axis, 114--Linear bearing, 12--Sliding seat, 121--Gear plate, 122--Cover plate, 13--Driving pulley, 14--Gear motor, 15--Driven pulley, 151--Pulley shaft, 16--Synchronous belt, 17--U-shaped groove, 171--Slide groove, 172--End cover, 2--Translation device, 21--Side plate, 22--Guide shaft, 3--Rotation 4--Seat, 4--Rotating arm, 41--Rotating shaft, 5--Longitudinal sealing mechanism, 51--Longitudinal sealing frame, 52--Cylinder, 53--Left sealing roller, 54--Right sealing roller, 55--Slide rod, 56--Push seat, 6--Locking mechanism, 61--Locking block, 62--Second fastening handle, 61a--Arc-shaped groove, 7--First fastening handle, 8--Detection bracket, 81--Upper mounting slot, 82--Lower mounting slot, 83--First proximity switch, 84--Second proximity switch, 9--Limit module. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please refer to Figures 1 to 6This utility model provides a high-speed longitudinal sealing mechanism, including a lifting device 1, a translation device 2, a rotating seat 3, a rotating arm 4, and a longitudinal sealing mechanism 5; the translation device 2 is connected to the lifting device 1, and the lifting device 1 is used to drive the translation device 2 to rise and fall; the rotating seat 3 is connected to the translation device 2, and the translation device 2 is used to adjust the position of the rotating seat 3; the rotating arm 4 is rotatably connected to the rotating seat 3, and the rotating arm 4 is provided with a locking mechanism 6, which is used to lock the rotating arm 4 onto the rotating seat 3; the longitudinal sealing mechanism 5 is connected to the rotating arm 4.

[0026] In this embodiment of the invention, the lifting device 1 drives the translation device 2, which is equipped with a rotating seat 3, a rotating arm 4, and a longitudinal sealing mechanism 5. When the lifting device 1 moves, it ultimately drives the longitudinal sealing mechanism 5 to rise or fall vertically. This connection structure allows the longitudinal sealing mechanism 5 to rise or fall to adapt to the movement of the packaging bag. For example, when the packaging bag is conveyed from top to bottom, the longitudinal sealing mechanism 5 begins to fall from above, clamping the longitudinal opening of the packaging bag during the descent, and then falls along with the packaging bag. When it reaches the bottom, the longitudinal sealing mechanism 5 releases the packaging bag, thus completing the sealing process. This longitudinal sealing mechanism 5, which moves with the packaging bag, avoids the traditional process of requiring the packaging bag to stop to ensure a tight seal, greatly improving the sealing speed. After sealing is completed, the lifting device 1 drives the longitudinal sealing mechanism 5 to rise, starting the next sealing operation. The translation device 2 is used to adjust the position of the rotating seat 3, and then, through the rotating seat 3 and the rotating arm 4, achieves the effect of adjusting the position of the longitudinal sealing mechanism 5, allowing the longitudinal sealing mechanism 5 to adapt to packaging bags of different sizes. When the packaging machine needs to be adjusted, the longitudinal sealing mechanism 5 can be rotated outward by rotating the rotating arm 4. After adjustment, the rotating arm 4 can be fixed by the locking mechanism 6 to ensure the stability of the sealing process.

[0027] In this embodiment, the lifting device 1 is a mechanical device that enables the translation device 2 to move in the vertical direction. The lifting device 1 can adopt common motion devices, such as screw drive, gear and rack drive, hydraulic cylinder / pneumatic cylinder, belt drive and chain drive. The structure of each device is as follows:

[0028] A lead screw drive consists of a lead screw, a nut seat that mates with the lead screw, a motor, and a guide mechanism (such as a guide rail, optical shaft, or linear guide). The motor drives the lead screw to rotate, causing the nut seat to move axially along the lead screw. The guide mechanism restricts the rotation of the nut seat, which in turn acts on the translation device and moves it. The vertical ascent or descent of the translation device is achieved by the forward and reverse rotation of the motor.

[0029] The gear and rack transmission device consists of a rack, a gear, a motor, and a guide device. The motor drives the gear to rotate, and the gear meshes with the rack, converting the rotational motion into the vertical linear motion of the rack. Depending on the load, either a spur gear rack or a helical gear rack can be selected.

[0030] The hydraulic cylinder / pneumatic cylinder device directly drives the translation device to rise or fall.

[0031] The belt drive device consists of a driving pulley, a driven pulley, a belt, a motor, and a guide device. The motor drives the driving pulley to rotate, which in turn drives the driven pulley to rotate via the belt. The belt then pulls the translation device to rise or fall.

[0032] The chain drive device consists of a drive sprocket, a driven sprocket, a chain, a motor, and a guide device. The motor drives the drive sprocket to rotate, which in turn drives the driven sprocket to rotate via a belt. The chain traction device moves the device up or down.

[0033] The guiding device in the above-mentioned device can adopt a structure of linear guide rail and slider cooperation, or linear optical axis and sliding sleeve cooperation to achieve linear motion.

[0034] The translation device 2 in this embodiment includes a translation base and a sliding structure mounted on the translation base. The sliding structure docks with the rotating base 3 and can drive the rotating base 3 to move. The translation base can be a split structure or an integrated structure. The split structure can be composed of multiple plates spliced ​​together, and the plates can be installed on the lifting device, which can save materials and make the volume more compact; the integrated structure has greater rigidity, stronger stability, and larger load-bearing capacity. The sliding structure is used to limit the horizontal movement direction and improve stability and accuracy. It can use a linear guide or a linear optical axis to achieve linear movement. The linear guide consists of a guide rail, a slider, and balls / rollers, with a low coefficient of friction and high guiding accuracy, and is used in high-precision lifting equipment; the linear optical axis cooperates with linear bearings or sliding sleeves, with a simple structure and low cost, and is suitable for light load scenarios.

[0035] Preferably, the lifting device 1 includes a lifting frame 11, on which a slidable sliding seat 12 is provided; one end of the lifting frame 11 is provided with a driving pulley 13 and a reduction motor 14, and the other end is provided with a driven pulley 15. The driving pulley 13 and the driven pulley 15 are connected by a synchronous belt 16, and the reduction motor 14 is drivenly connected to the driving pulley 13; the synchronous belt 16 is connected to the sliding seat 12 and drives the sliding seat 12 to move on the lifting frame 11.

[0036] In this embodiment, a geared motor 14 drives a synchronous belt 16 to convert rotational motion into vertical linear motion of the sliding seat 12. High-precision, low-noise lifting control is achieved through the meshing of the teeth on the inner side of the synchronous belt 16, meeting the requirements for rapid positioning and stable operation of the longitudinal sealing mechanism 5. Specifically, the geared motor 14 is connected to the drive pulley 13, which drives the driven pulley 15 at the bottom to rotate via the synchronous belt 16, forming a closed-loop transmission in the vertical direction. The synchronous belt 16 is fixedly connected to the sliding seat 12. When the synchronous belt 16 rotates with the drive pulley 13, it drives the sliding seat 12 to move vertically up and down along the lifting frame 11. In this embodiment, a geared motor 14 is used to control the sliding seat 12. For example, the geared motor 14 controls the sliding seat 12 by changing its direction of rotation, thereby controlling the lifting and lowering of the longitudinal sealing mechanism 5. Furthermore, the lifting and lowering speed of the sliding seat 12 is controlled by adjusting the speed of the geared motor 14. Precise positioning of the sliding seat 12 is achieved by setting the number of motor rotations or by using a limit switch.

[0037] In this embodiment, the installation positions of the driving pulley 13 and the driven pulley 15 can be set according to actual needs. For example, the driving pulley 13 can be installed on the top of the lifting frame 11 and the driven pulley 15 can be installed on the bottom of the lifting frame 11, or the driving pulley 13 can be installed on the bottom of the lifting frame 11 and the driven pulley 15 can be installed on the top of the lifting frame 11. Stable transmission can be achieved in both cases.

[0038] Preferably, the bottom of the lifting frame 11 is provided with a U-shaped groove 17, and the two side walls of the U-shaped groove 17 are respectively provided with sliding grooves 171. The driven pulley 15 is provided with a pulley shaft 151, and the two ends of the pulley shaft 151 are respectively inserted into the sliding grooves 171 on the two side walls of the U-shaped groove 17. The opening of the sliding groove 171 is provided with an end cap 172, the end cap 172 is provided with an adjusting screw hole, the adjusting screw hole is provided with a rotatable adjusting screw, and the pulley shaft 151 is provided with a threaded hole that cooperates with the adjusting screw. The adjusting screw and the threaded hole are threadedly connected. In this embodiment, the two ends of the pulley shaft 151 of the driven pulley 15 are placed in the sliding grooves 171 on the side walls of the U-shaped groove 17 and can slide along the groove. Rotate the adjusting screw (not shown in the figure), the adjusting screw engages with the threaded hole of the pulley shaft 151, and push the pulley shaft 151 to move in the slide groove 171, thereby changing the center distance between the driving pulley 13 and the driven pulley 15, and realizing the tension adjustment of the synchronous belt 16.

[0039] Preferably, the lifting frame 11 includes a top plate 111, a bottom plate 112, and a pair of parallel linear optical axes 113. The two ends of each linear optical axis 113 are connected to the top plate 111 and the bottom plate 112, respectively. A linear bearing 114 is slidably connected to the outer wall of each linear optical axis 113, and the linear bearing 114 is connected to the sliding seat 12. The sliding seat 12 has a toothed plate 121 and a cover plate 122 on its side. The toothed plate 121 meshes with the synchronous belt 16, and the cover plate 122 fixes the synchronous belt 16 onto the toothed plate 121. In this embodiment, the linear optical axis 113 and the linear bearing 114 cooperate to achieve precise guidance and smooth operation. The engagement of the synchronous belt 16 with the toothed plate 121 ensures a stable connection between the sliding seat 12 and the synchronous belt 16, reducing deviation during movement.

[0040] Preferably, the translation device 2 includes a pair of parallel side plates 21, and a pair of guide shafts 22 are provided between the pair of side plates 21; the side plates 21 are connected to the sliding seat 12; the rotating seat 3 is slidably connected to the guide shafts 22; the rotating seat 3 is provided with a locking hole, and a first fastening handle 7 is threadedly connected to the locking hole, the first fastening handle 7 being used to lock the rotating seat 3 onto the guide shafts 22.

[0041] In this embodiment, two side plates 21 are respectively installed on both sides of the sliding seat 12. A pair of parallel guide shafts 22 are provided inside the two side plates 21, which can ensure good linearity of the rotating seat 3 during translation, reduce offset and shaking, and allow its position on the guide shafts 22 to be adjusted as needed. After the position of the rotating seat 3 is adjusted, the first fastening handle 7 can be tightened. The bottom of the first fastening handle 7 abuts against the guide shaft 22, thereby locking the rotating seat 3 and preventing displacement during operation.

[0042] Furthermore, the guide shaft 22 is provided with an inner groove, and the bottom of the groove is provided with scale markings. In this embodiment, by providing an inner groove on the guide shaft 22 and providing scale markings on the bottom of the groove, the value of the movement of the rotating seat 3 can be read intuitively. The operation is simple and the positioning is accurate, which facilitates quick restoration of the adjusted position, ensures the consistency of packaging for different batches, and the scale markings with the inner groove design are not easily worn, making maintenance convenient.

[0043] Preferably, the locking mechanism 6 is provided with a limiting module 9, which is disposed opposite to the rotating arm 4. By providing the limiting module 9, the rotation range of the rotating arm 4 can be controlled, so that the position of the longitudinal sealing mechanism 5 after rotation and opening can be well controlled.

[0044] Furthermore, the limiting module includes a limiting screw 9, one end of which is connected to the locking mechanism 6, and the other end is provided with a nut, which abuts against the rotating arm 4. A fixing nut is also provided on the limiting screw, which locks the limiting screw onto the locking mechanism 6 to improve stability. In this embodiment, one end of the limiting screw is connected to the locking mechanism 6, and the other end abuts against the rotating arm 4 through a nut. At this time, the rotating arm 4 can rotate within a certain range, but the limiting screw can restrict excessive movement of the rotating arm 4, maintaining the stability of the longitudinal sealing mechanism 5.

[0045] Preferably, the lifting frame 11 has a detection bracket 8 on its side. The detection bracket 8 has an upper mounting slot 81 and a lower mounting slot 82. A first proximity switch 83 is installed in the upper mounting slot 81, and a second proximity switch 84 is installed in the lower mounting slot 82. In this embodiment, the detection bracket 8 on the side of the lifting frame 11 has upper and lower mounting slots 82, which respectively install the first and second proximity switches 84. They can realize automatic limit control. When the sliding seat 12 rises or falls to a set position, the first proximity switch 83 or the second proximity switch 84 is triggered, which can effectively prevent the sliding seat 12 from exceeding the preset movement range. This embodiment adopts a non-contact detection method, which can reduce wear and extend the equipment life. In addition, the installation positions of the two proximity switches can be adjusted in the slots to adapt to different packaging specifications, which is highly flexible.

[0046] Preferably, the rotating arm 4 has a rotating shaft 41 at its end; both ends of the rotating shaft 41 are respectively provided with tapered roller bearings, and are connected to the rotating seat 3 through the tapered roller bearings. With the above structural arrangement, the rotating shaft 41 at the end of the rotating arm 4 is connected to the rotating seat 3 through the tapered roller bearings, which can withstand radial and axial loads, rotate flexibly with low resistance, and have high positioning accuracy, thus ensuring smooth rotation and stable sealing position.

[0047] Preferably, the locking mechanism 6 includes two locking units, which are respectively located at the top and bottom of the rotating arm 4. Each locking unit includes a locking block 61 and a second fastening handle 62. The locking block 61 is connected to the rotating seat 3 by bolts. The second fastening handle 62 is threadedly connected to the rotating arm 4. The locking block 61 has an arc-shaped groove 61a that mates with the second fastening handle 62. In this embodiment, the top and bottom of the rotating arm 4 are fixed simultaneously, enhancing the locking stability of the rotating arm 4 and preventing tilting or shaking. The second fastening handle 62 abuts against the arc-shaped groove 61a of the locking block 61, generating radial pressure through threaded tightening, conforming to the surface of the locking block, and making the locking more secure. Rotating the second fastening handle 62 can loosen / lock the mechanism without tools, making adjustment more convenient.

[0048] Preferably, the longitudinal sealing mechanism 5 includes a longitudinal sealing frame 51, a cylinder 52, a left sealing roller 53, and a right sealing roller 54; the longitudinal sealing frame 51 is provided with a pair of parallel sliding rods 55, and the sliding rods 55 are provided with slidable push seats 56; the cylinder 52 is located on the outside of the longitudinal sealing frame 51, and its piston rod is connected to the push seat 56; the left sealing roller 53 is located on the push seat 56; the right sealing roller 54 is located on the inside of the longitudinal sealing frame 51 and is arranged opposite to the left sealing roller 53.

[0049] In this embodiment, a guide rod 55 is used for guidance, ensuring a smooth guiding process. The cylinder 52 provides a rapid response, enabling quick opening and closing of the sealing rollers. Specifically, the packaging bag passes between the left and right sealing rollers 54. During sealing, the cylinder 52 activates, extending its piston rod to push the pusher seat 56 inward along the guide rod 55. The pusher seat 56 then drives the left sealing roller 53 to move synchronously until the left and right sealing rollers 54 are in contact, applying pressure to the packaging material sandwiched between them. Both the left and right sealing rollers 53 and 54 have built-in heating elements that heat the edges of the packaging bag during the contact process, causing them to fuse and completing the longitudinal sealing. After sealing, the piston rod of the cylinder 52 retracts, causing the pusher seat 56 and the left sealing roller 53 to reset and separate from the right sealing roller 54. The packaging bag continues to be conveyed and enters the next process.

[0050] In this embodiment, the cylinder 52 drives the push seat 56 to move linearly along the slide bar 55, controlling the opening and closing of the left and right sealing rollers 54 to achieve clamping and sealing of the packaging material. With the help of the lifting device 1, longitudinal sealing can be completed during the conveying of the packaging bag. The structure is simple and efficient, and is suitable for high-speed continuous packaging scenarios.

[0051] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a lifting device to drive the vertical sealing mechanism, enabling the mechanism to follow the movement of the packaging bag and seal it during movement, effectively improving the sealing efficiency of the packaging bag and meeting the vertical sealing requirements of high-speed continuous packaging machines. The translation device can adjust the position of the vertical sealing mechanism, accommodating various packaging bag sizes. Furthermore, the rotating arm enables the vertical sealing mechanism to rotate and open, facilitating easy adjustment, and the locking mechanism ensures stability during high-speed operation. This invention has a simple structure, compact size, high flexibility, and is convenient to install and maintain, effectively improving vertical sealing efficiency and reducing the cost of packaging machines.

[0052] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-speed longitudinal sealing mechanism, characterized in that, It includes a lifting device (1), a translation device (2), a rotating seat (3), a rotating arm (4), and a longitudinal sealing mechanism (5); the translation device is connected to the lifting device, and the lifting device is used to drive the translation device to lift and lower; the rotating seat is connected to the translation device, and the translation device is used to adjust the position of the rotating seat; the rotating arm is rotatably connected to the rotating seat, and the rotating arm is provided with a locking mechanism (6), which is used to lock the rotating arm onto the rotating seat; the longitudinal sealing mechanism is connected to the rotating arm.

2. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The lifting device includes a lifting frame (11), on which a sliding seat (12) is provided; one end of the lifting frame is provided with a drive pulley (13) and a reduction motor (14), and the other end is provided with a driven pulley (15). The drive pulley and the driven pulley are connected by a synchronous belt (16), and the reduction motor is connected to the drive pulley for transmission; the synchronous belt is connected to the sliding seat and drives the sliding seat to move on the lifting frame.

3. The high-speed longitudinal sealing mechanism according to claim 2, characterized in that, The bottom of the lifting frame is provided with a U-shaped groove (17), and the two side walls of the U-shaped groove are respectively provided with sliding grooves (171). The driven pulley is provided with a pulley shaft (151), and the two ends of the pulley shaft are respectively inserted into the sliding grooves on the two side walls of the U-shaped groove. The opening of the sliding groove is provided with an end cover (172), the end cover is provided with an adjusting screw hole, the adjusting screw hole is provided with a rotatable adjusting screw, the pulley shaft is provided with a threaded hole that cooperates with the adjusting screw, and the adjusting screw is threadedly connected to the threaded hole.

4. The high-speed longitudinal sealing mechanism according to claim 2, characterized in that, The lifting frame includes a top plate (111), a bottom plate (112), and a pair of parallel linear optical axes (113). The two ends of the linear optical axes are connected to the top plate and the bottom plate, respectively. A linear bearing (114) is slidably connected to the outer wall of the linear optical axis, and the linear bearing is connected to the sliding seat. The side of the sliding seat is provided with a toothed plate (121) and a cover plate (122). The toothed plate meshes with the synchronous belt, and the cover plate fixes the synchronous belt on the toothed plate.

5. The high-speed longitudinal sealing mechanism according to claim 2, characterized in that, The translation device includes a pair of parallel side plates (21) and a pair of guide shafts (22) between the side plates; the side plates are connected to the sliding seat; the rotating seat is slidably connected to the guide shafts; the rotating seat is provided with a locking hole, and a first fastening handle (7) is threadedly connected to the locking hole, the first fastening handle being used to lock the rotating seat onto the guide shafts.

6. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The locking mechanism is provided with a limiting module (9), which is arranged opposite to the rotating arm.

7. The high-speed longitudinal sealing mechanism according to claim 2, characterized in that, The lifting frame is provided with a detection bracket (8) on its side. The detection bracket is provided with an upper mounting groove (81) and a lower mounting groove (82). A first proximity switch (83) is installed in the upper mounting groove, and a second proximity switch (84) is installed in the lower mounting groove.

8. The high-speed longitudinal sealing mechanism according to claim 1, characterized in that, The rotating arm has a rotating shaft (41) at its end; tapered roller bearings are provided at both ends of the rotating shaft and are connected to the rotating seat through the tapered roller bearings.

9. The high-speed longitudinal sealing mechanism according to claim 8, characterized in that, The locking mechanism includes two locking units, which are respectively located at the top and bottom of the rotating arm. Each locking unit includes a locking block (61) and a second fastening handle (62). The locking block is connected to the rotating seat by bolts. The second fastening handle is threadedly connected to the rotating arm. The locking block is provided with an arc-shaped groove (61a) that cooperates with the second fastening handle.

10. The high-speed longitudinal sealing mechanism according to any one of claims 1 to 9, characterized in that, The longitudinal sealing mechanism includes a longitudinal sealing frame (51), a cylinder (52), a left sealing roller (53), and a right sealing roller (54); the longitudinal sealing frame is provided with a pair of parallel sliding rods (55), and the sliding rods are provided with slidable push seats (56); the cylinder is located on the outside of the longitudinal sealing frame, and its piston rod is connected to the push seat; the left sealing roller is located on the push seat; the right sealing roller is located on the inside of the longitudinal sealing frame and is arranged opposite to the left sealing roller.

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