A courier bag packaging machine

Abstract

The present invention discloses an express bag packaging machine, wherein a conveying mechanism thereof is equipped with a winding roller group in cooperation with a sensor, and the winding roller group can pre-store express bags of a certain length, and the winding roller group senses the position change of the winding roller group to control the feeding of the front and rear mechanisms; the sealing and cutting mechanism thereof adjusts the separation position of the dynamic sealing and cutting member and the fixed sealing and cutting member and adjusts the size of the sealing and cutting stroke by adjusting the setting of the sensor in the mechanism; a bag dragging mechanism is arranged to drag the express bags and articles to avoid damage to the articles and the express bags; the production efficiency of the express bag packaging machine is ensured as a whole, and effective protection of the materials is achieved.

Description

Technical Field

[0001] The invention relates to the field of packaging machinery, and more specifically to a courier bag packaging machine. Background Art

[0002] In the prior art, an express bag packaging machine is used to convey express bags that have been basically formed. The conveying mechanism of the express bag packaging machine outputs a roll of express bags individually and hangs them under the sealing and cutting mechanism. After the staff puts items into a single express bag, the sealing and cutting mechanism seals the express bag. After the front and rear express bags are torn open at the serrated tear, the express bags fall down to complete the packaging.

[0003] A roll of express bag is placed at the input roller of the conveying mechanism. When unloading, the express bag is rolled around several winding rollers and output to the rubber roller group. The rubber roller group clamps the express bag for external output. A driving mechanism is set at both the input roller and the rubber roller to release the express bag, and the winding roller is used to store the express bag pre-output at the input roller for direct output at the rubber roller, thereby improving the overall efficiency of releasing the express bag. How to reasonably set the winding roller to well control the start of the express bag release at the input roller can improve the degree of automation and protect the normal transportation of the express bag.

[0004] The sealing and cutting mechanism seals by closing two sealing and cutting parts, one of which is fixed and the other is movable. In the existing method, the movable sealing and cutting part needs to move back and forth for a maximum stroke each time it seals and cuts. When placing items that are not that large, it is unnecessary to separate them by a large distance. The maximum back and forth stroke increases the time required for the sealing and cutting process. When packaging large quantities of express deliveries, the extra time spent each time accumulates, and the overall time spent slows down the packaging efficiency.

[0005] In order to adapt to the bagging of express bags of different specifications, the sealing and cutting mechanism is set at a certain height. In this way, when putting items into the express bag, the express bag will be pulled, which may cause the express bag to be uneven and affect the sealing and cutting quality, or the express bag will fall to a certain height after the serrated tear is torn. Even if a flexible material is set at the bottom to receive it, it will be difficult to avoid damaging the items in the express bag at a higher height. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a courier bag packaging machine to improve the conveying efficiency of courier bags and protect courier bags, thereby improving the production efficiency of the entire machine.

[0007] The present invention provides the following technical solution: a courier bag packaging machine, comprising a conveying mechanism for conveying courier bags, a sealing and cutting mechanism for sealing and cutting the mouth of courier bags, and a bag-pulling mechanism for receiving courier bags and articles therein, the conveying mechanism comprising an input roller group for placing a whole tube of courier bags, a winding roller group for winding the courier bags conveyed from the input roller group, and a rubber roller group arranged at the output end for clamping and outputting the courier bags, the winding roller group comprising a fixed winding roller arranged at the top and a movable winding roller arranged at the bottom, the movable winding roller being movable up and down and arranged on a shell body, the input roller group The express bags between the roller group and the rubber roller group are pre-stored by bypassing the fixed winding roller and the dynamic winding roller in turn. When the rubber roller group pulls the express bags, the express bags decrease and the dynamic winding roller is pulled to make it rise. When the input roller group releases the express bags, the express bags increase and the dynamic winding roller is put down to make it fall. A first sensor for detecting the height of the dynamic winding roller is set on the side of the dynamic winding roller. When the dynamic winding roller rises and leaves the sensing range of the first sensor, the first sensor feedback signal starts the input roller group to release the express bags. When the dynamic winding roller descends to the first sensor and is sensed, the first sensor feedback signal stops the input roller group.

[0008] The sealing and cutting mechanism includes a fixed sealing and cutting piece and a dynamic sealing and cutting piece. The dynamic sealing and cutting piece is controlled by a first driving mechanism to perform reciprocating motion to close or separate from the fixed sealing and cutting piece. The sealing and cutting mechanism also includes an adjusting mechanism. The adjusting mechanism includes a second driving mechanism and a third sensor. When the second driving mechanism is started, the third sensor is controlled to move along the movement direction of the dynamic sealing and cutting piece and the third sensor is stopped when the sealing and cutting piece is closed. The third sensor is arranged corresponding to the dynamic sealing and cutting piece and limits its maximum separation position. When the first driving mechanism drives the dynamic sealing and cutting piece to separate from the fixed sealing and cutting piece and reaches the position of the third sensor, the dynamic sealing and cutting piece is sensed by the third sensor, and the feedback signal of the third sensor stops the first driving mechanism.

[0009] The bag dragging mechanism includes a bag dragging plate and a flipping drive mechanism. The rubber roller group, the fixed sealing and cutting parts, and the bag dragging plate are arranged in sequence in the height direction. The flipping drive mechanism is connected to the bag dragging plate and is used to drive the bag dragging plate to flip, thereby switching the bag dragging plate between the horizontal and inclined states.

[0010] As an improvement, a second sensor for detecting the height of the movable winding roller is also provided on the side of the movable winding roller. The second sensor is located below the first sensor and corresponds to the extreme position of the movable winding roller's descent. When the movable winding roller descends to the second sensor and is sensed, the second sensor feedback signal stops the operation of the input roller group and the rubber roller group.

[0011] As an improvement, there are two fixed winding rollers arranged on the left and right, and two moving winding rollers arranged on the left and right. The express bags pass around the fixed winding rollers and the moving winding rollers at intervals to form multiple layers of pre-storage express bags; the two moving winding rollers are symmetrically arranged on an arrangement frame, and the arrangement frame can slide up and down on a first vertical rod; the two fixed winding rollers are symmetrically arranged on both sides of the upper end of the first vertical rod, and the positions of the fixed winding rollers on both sides correspond to the moving winding rollers below.

[0012] As an improvement, the dynamic sealing and cutting component includes a sealing and cutting body, a guide rod and a back plate. The sealing and cutting body is arranged on the front outside of the shell. The guide rod is divided into two groups and the front part is connected to the two sides of the sealing and cutting body. The guide rod is slidably arranged on the shell. The rear part of the guide rod is connected to the back plate. The back plate is arranged inside the shell and connected to the first driving mechanism. The third sensor senses when the back plate is arranged correspondingly.

[0013] As an improvement, the third sensor is arranged on a movable frame, the movable frame is slidably arranged on the sliding rod, the second driving mechanism is connected to a screw rod, and the screw rod is connected to the movable frame for rotational drive. When the second driving mechanism drives the screw rod to rotate, it drives the movable frame to translate.

[0014] As an improvement, the second driving mechanism is a motor, which is connected to the lead screw through a chain sprocket assembly; a coding wheel is arranged at the lead screw, and a notch is arranged on the coding wheel for detecting the number of rotations, and a fourth sensor is arranged on the side corresponding to the notch on the coding wheel. When the coding wheel rotates until the notch corresponds to the fourth sensor, a feedback signal is used to determine the rotation condition.

[0015] As an improvement, it also includes a front baffle, which is arranged behind the rubber roller group, the fixed sealing and cutting parts, and the bag dragging plate for receiving express bags and items at the rear; a through hole is provided on the front baffle for the bag dragging plate to extend out, and a flipping drive mechanism is arranged on the inner side of the front baffle; the bag dragging plate is rotatably arranged on a mounting frame through a rocker arm, the middle part of the rocker arm is rotatably connected to the mounting frame, one side is connected to the bag dragging plate, and the other side is connected to the flipping drive mechanism.

[0016] As an improvement, the mounting frame can be lifted and lowered on the second vertical rod, and driven by a lifting drive mechanism to adjust the height position of the mounting frame; the lifting drive mechanism is a motor, which is connected to a screw slider assembly through a sprocket chain assembly, and the screw slider assembly is connected to the mounting frame for linkage.

[0017] As an improvement, the rubber roller group includes an upper rubber roller and a lower rubber roller, which fit together to clamp the express bag and transport the express bag while rolling, and the lower rubber roller can be rotatably set on the bracket, and the upper rubber roller can be separated and fitted with the lower rubber roller through a debugging mechanism, and the debugging mechanism includes a transverse axis, a resistance block and an elastic member, the upper rubber roller can be rotatably set on the transverse axis, and the resistance blocks are set at both ends of the transverse axis, the lower side of the resistance block is against the bracket, and the upper side of the resistance block is limited by the elastic member, so that the upper rubber roller is against the lower rubber roller and fits together; the resistance block is cylindrical as a whole, the transverse axis coincides with the axis of the resistance block, and the outer periphery of the resistance block has a recessed platform, the platform and the outer circumference of the resistance block form a different size, the platform is against the bracket, and when the resistance block is rotated, the outer circumference of the resistance block is against the bracket, so that the transverse axis is lifted to separate the upper rubber roller from the lower rubber roller.

[0018] As an improvement, a spiral member is arranged on the upper part of the elastic member, and the spiral member is adjustably arranged on the bracket. When the spiral member is adjusted, the spiral member is moved forward or backward to change the pressure of the elastic member on the resistance block.

[0019] The beneficial effects of the present invention are as follows: the conveying mechanism can pre-store express bags of a certain length through the setting of the winding roller group and the first sensor. After the staff completes the sealing and packaging of the express bag once, the driving mechanism at the rubber roller runs to convey the next express bag to the sealing and cutting mechanism. At this time, the express bag at the winding roller group is pulled away, so that the movable winding roller is pulled up. After sensing the rise of the movable winding roller, the first sensor feeds back a signal to make the driving mechanism at the input roller group run and start to release the express bag, thereby ensuring the orderly conveying of the express bag as a whole; the rubber roller can quickly discharge the express bag because there are pre-stored express bags, and the input roller group has a whole roll of express bags and continuously and slowly discharges the express bag. When the staff is bagging and sealing the items at the sealing and cutting mechanism, the express bags at the winding roller group are replenished until the movable winding roller descends and stops after being sensed by the first sensor, thereby achieving good express bag conveying, high conveying efficiency, no pulling of the express bag to cause damage, and a high overall degree of automation, and no manual operation is required in the process of conveying the express bag.

[0020] The sealing and cutting mechanism limits the stroke of the dynamic sealing and cutting member by setting the third sensor, so that when the dynamic sealing and cutting member reaches the third sensor and is sensed, the first driving mechanism is fed back to stop running, thereby making the dynamic sealing and cutting member stay at the required position; the position of the third sensor can be debugged by the staff operating the second driving mechanism, and the stroke of the dynamic sealing and cutting member can be flexibly adjusted to ensure that the spacing left between the dynamic sealing and cutting member and the fixed sealing and cutting member can allow the objects to pass through and be placed in the express bag; the dynamic sealing and cutting member and the fixed sealing and cutting member can be debugged to the spacing size suitable for the passage of the objects corresponding to the size of the packaged objects, so that the time required for closing and separating the dynamic sealing and cutting member and the fixed sealing and cutting member can be shortened to a certain extent compared with the original travel to the original maximum distance, which can improve the efficiency of the sealing and cutting process. In the case of batch packaging, the accumulated time saved can improve the packaging efficiency as a whole.

[0021] The bag dragging mechanism is set at the discharge position, which can drag the items and the bag when the staff puts the items into the express bag to avoid pulling the express bag; and prevent the items from falling directly after the express bag is sealed and cut, which plays a role in protecting the items; then the bag dragging plate is flipped by the flip driving mechanism to make the express bag with the items fall, and collected by the box set below or sent away by the conveyor belt. Its structure is simple and easy to set up, and the setting cost itself is low, and it can well ensure the dragging and protection of the express bag and items during the bagging and sealing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure diagram of the express bag packaging machine of the present invention is shown in FIG. Figure 1 .

[0023] Figure 2 The three-dimensional structure diagram of the express bag packaging machine of the present invention is shown in FIG. Figure 2 .

[0024] Figure 3 The three-dimensional structure diagram of the express bag packaging machine of the present invention is shown in FIG. Figure 3 .

[0025] Figure 4 for Figure 1 Enlarged view of point M in the middle.

[0026] Figure 5 for Figure 2 Enlarged view of point N in the middle.

[0027] Figure 6 for Figure 3 Enlarged view of point P in the middle.

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the express bag packaging machine of the present invention after removing the front baffle.

[0029] Figure 8The three-dimensional structure of the bag dragging mechanism of the present invention is shown in FIG. Figure 1 .

[0030] Fig. 9 The three-dimensional structure of the bag dragging mechanism of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 , 2, 3, 4, 5, 6, 7, 8, and 9 are specific embodiments of the express bag packaging machine of the present invention. This embodiment includes a conveying mechanism A for conveying express bags, a sealing and cutting mechanism B for sealing and cutting the mouth of the express bags, and a bag-pulling mechanism C for receiving the express bags and the items therein. The conveying mechanism A includes an input roller group A1 for placing a whole tube of express bags, a winding roller group A2 for winding the express bags conveyed from the input roller group A1, and a rubber roller group A3 arranged at the output end for clamping and outputting the express bags. The winding roller group A2 includes a fixed winding roller A21 arranged at the top and a movable winding roller A22 arranged at the bottom. The movable winding roller A22 is arranged on the housing 0 and can move up and down. There is a gap between the input roller group A1 and the rubber roller group A3. The express bags are sequentially passed around the fixed winding roller A21 and the dynamic winding roller A22 for pre-storage. When the rubber roller group A3 pulls the express bags, the express bags decrease and the dynamic winding roller A22 is pulled to make it rise. When the input roller group A1 releases the express bags, the express bags increase and the dynamic winding roller A22 is put down to make it fall. The side of the dynamic winding roller A22 is provided with a first sensor A23 for detecting the height of the dynamic winding roller A22. When the dynamic winding roller A22 rises and leaves the sensing range of the first sensor A23, the first sensor A23 feedbacks a signal to start the input roller group A1 to release the express bags. When the dynamic winding roller A22 drops to the first sensor A23 and is sensed, The first sensor A23 feedbacks a signal to stop the input roller group A1; the sealing and cutting mechanism B includes a fixed sealing and cutting piece B1 and a dynamic sealing and cutting piece B2, the dynamic sealing and cutting piece B2 is controlled by the first driving mechanism B3 to reciprocate, and closes or separates with the fixed sealing and cutting piece B1, and also includes an adjusting mechanism B4, the adjusting mechanism B4 includes a second driving mechanism B41 and a third sensor B42, when the second driving mechanism B41 is started, the third sensor B42 is controlled to move along the moving direction of the dynamic sealing and cutting piece B2 and the third sensor B42 is stopped when it is closed; the third sensor B42 is set corresponding to the dynamic sealing and cutting piece B2 and limits its maximum separation When the first driving mechanism B3 drives the dynamic sealing and cutting piece B2 to separate from the fixed sealing and cutting piece B1 and moves to the position of the third sensor B42, the dynamic sealing and cutting piece B2 is sensed by the third sensor B42, and the feedback signal of the third sensor B42 stops the first driving mechanism B3; the bag dragging mechanism C includes a bag dragging plate C31 and a flipping driving mechanism C32, the rubber roller group A3, the fixed sealing and cutting piece B1, and the bag dragging plate C31 are arranged in sequence in the height direction, and the flipping driving mechanism C32 is connected to the bag dragging plate C31 and is linked to drive the bag dragging plate C31 to flip, thereby switching the bag dragging plate C31 between the horizontal and inclined states.

[0033] When the present invention is in use, a whole roll of express bags is placed at the input roller group A1, and after the express bags are rolled around the winding roller group A2, they are clamped by the rubber roller group A3, and the express bags are released when the rubber roller group A3 is running, and the output express bags are suspended downward by their own weight; through a preset travel distance or sensor induction, the lower part of the express bag passes through the sealing and cutting mechanism B, and the mouth stays between the fixed sealing and cutting piece B1 and the dynamic sealing and cutting piece B2, and the blower mechanism arranged above blows the bag mouth open, and the bag-supporting mechanisms on both sides support the bag mouth open, and the staff puts the items in, and the bag-dragging plate C31 blocks the items and drags them, so as to prevent the weight of the items from pulling the express bags, and can keep the bag mouth open flat and not damaged, and will not pull the connected express bags. The sealing and cutting mechanism B completes the sealing and cutting of the express bag mouth, and the upper express bag is rotated by the rubber roller group A3 for a certain distance, tearing off the serrated tear between the connected express bags, so that the express with items falls when the dynamic sealing and cutting component B2 and the fixed sealing and cutting component B1 are separated; the express with items falls and is dragged by the bag dragging plate C31 to avoid falling directly, which plays a protective role. After that, the staff operates the flip driving mechanism C32 to make the bag dragging plate C31 tilt outward, and the express can fall along with it. It can gently drop the express downward to avoid the impact caused by direct falling. The fallen express can be collected by the box or sent away by the conveyor belt. The bag dragging structure is simple and easy to set up, with low setting cost, and can well ensure the dragging protection of express bags and items during bagging and sealing and cutting.

[0034] When the express bag is driven and output by the rubber roller group A3, the express bag at the winding roller group A2 is pulled out; when the express bag is placed at the input roller group A1, the express bag at the winding roller group A2 is replenished. The express bag bypasses the fixed winding roller A21 and the movable winding roller A22 at the winding roller group A2. The express bag is wound to bypass the fixed winding roller A21 from the top and then bypass the movable winding roller A22 from the bottom. The express bag then bypasses other rollers upwards, so that the express bag drags the lower part of the movable winding roller A22. When the express bag is pulled away by the rubber roller group A3, the movable winding roller A22 rises, and when the express bag is placed at the input roller group A1, the movable winding roller A22 drops. On the basis of the above structure, the first sensor A23 is set to detect the position of the movable winding roller A22. When the whole is in a non-working state, the movable winding roller A22 stays at the height corresponding to the sensing height of the first sensor A23; when the driving mechanism of the rubber roller group A3 drives the movable winding roller A22 to rise, the first sensor A23 senses the departure of the movable winding roller A22, and the feedback signal enables the driving mechanism at the input roller group A1 to operate, and the express bag is released to supplement the express bag at the winding roller group A2. Due to the need for rapid transportation, the express bag output at the rubber roller group A3 is faster, and the express bag can be quickly delivered to the sealing and cutting mechanism B, where the staff will load the items and seal it; the input roller group A1 adopts a structure with two rollers arranged horizontally, and the whole roll of express bag is placed between the two rollers, which is connected to the driving mechanism by a stick. When driven, the whole roll is driven to rotate to release the express bag. The speed of the rotation to release the express bag is significantly slower than the pulling of the express bag by the rubber roller group A3. Therefore, the pre-storage of express bags at the winding roller group A2 ensures the rapid progress of subsequent work and will not be slowed down by the release of express bags at the input roller group A1; the difference in the speed of delivering express bags at the input roller group A1 and the rubber roller group A3 causes the rubber roller group A3 to pull away the express bag and cause the movable winding roller A22 to rise. As the input roller group A1 continues to release the express bag, the movable winding roller A22 falls back and is sensed by the first sensor A23 to stop releasing the express bag, and reaches the non-working state again. The scheme of the conveying mechanism A realizes good express bag conveying. The pre-storage of the express bags by the winding roller group A2 allows the subsequent order to quickly pull the express bags, and the previous order can continue to place the express bags. The conveying efficiency is high, the express bags will not be pulled to cause damage, and the overall degree of automation is high, and the express bag conveying process does not require manual operation.

[0035] When it is necessary to process express bags of different widths, i.e., to place items of different sizes, the staff can operate the second drive mechanism B41 to adjust the horizontal position of the third sensor B42 according to the width of the current batch of items (the width corresponds to the spacing between the dynamic sealing and cutting parts B2 and the fixed sealing and cutting parts B1), so that the position corresponds to the position where the dynamic sealing and cutting parts B2 will stay next time. When the dynamic sealing and cutting parts B2 reset after the sealing and cutting is completed next time, it will feedback the signal to stop the first drive mechanism B3, which well controls the travel of the mechanism; to achieve the size of the corresponding packaged items, the dynamic sealing and cutting parts B2 and the fixed sealing and cutting parts B1 can be adjusted to the spacing size that adapts to the passage of the items, so that the time required for the closing and separation of the dynamic sealing and cutting parts B2 and the fixed sealing and cutting parts B1 can be shortened to a certain extent compared to the original maximum distance, which can improve the efficiency of the sealing and cutting process. In the case of processing batch packaging, the accumulated time saved can improve the overall efficiency of packaging. The sensor used in the present invention can preferably be a proximity switch, or a sensor type in other prior art that can sense the arrival of objects.

[0036] As an improved specific implementation method, a second sensor A24 for detecting the height of the movable winding roller A22 is also provided on the side of the movable winding roller A22. The second sensor A24 is located below the first sensor A23 and corresponds to the extreme position of the descent of the movable winding roller A22. When the movable winding roller A22 descends to the second sensor A24 and is sensed, the second sensor A24 feedbacks a signal to stop the operation of the input roller group A1 and the rubber roller group A3.

[0037] like Figure 1 , 4 As shown, a second sensor A24 is further provided to detect whether the express bag is broken, that is, if the express bag is broken somewhere in the entire conveying line, the movable winding roller A22 will not be able to be dragged normally, and the movable winding roller A22 will directly fall to its lowering limit position, at which time it will be sensed by the second sensor A24, thereby feedback signal to stop the operation of the input roller group A1 and the rubber roller group A3, thereby completing the control and braking of the driving mechanism for conveying the express bag, avoiding the confusion of the express bag caused by the continued conveyance of the express bag, facilitating the maintenance inspection of the staff, saving the time of downtime for maintenance, and avoiding the phenomenon of express bags being damaged after being output at will, and no express bags will be wasted.

[0038] As an improved specific implementation method, there are two fixed winding rollers A21 arranged in left and right, and two movable winding rollers A22 arranged in left and right. The express bags pass around the fixed winding rollers A21 and the movable winding rollers A22 at intervals to form multiple layers of pre-storage express bags; the two movable winding rollers A22 are symmetrically arranged on an arrangement frame A221, and the arrangement frame A221 can slide up and down on a first vertical rod A222; the two fixed winding rollers A21 are symmetrically arranged on both sides of the upper end of the first vertical rod A222, and the positions of the fixed winding rollers A21 on both sides correspond to the movable winding rollers A22 below.

[0039] like Figure 1 , 2 As shown in Figure 4, during implementation, the express bag passes around the left fixed winding roller A21, the left movable winding roller A22, the right fixed winding roller A21, and the right movable winding roller A22 in sequence, that is, it passes around the fixed winding roller A21 and the movable winding roller A22 at the intervals defined above; the fixed winding rollers A21 and the movable winding rollers A22 set in such a number and the winding method allow the express bag to form a multi-layer length from left to right, achieving a better pre-storage amount, and the movable winding roller A22 does not need to be designed with an excessively long lifting length, which is beneficial to saving the height space occupied by the overall arrangement of the winding roller group A2; and after the rubber roller group A3 pulls away the express bag, the multi-layer length of the express bag allows the input roller group A1 to continuously place the express bag for a long time until the movable winding roller A22 drops to complete the replenishment of the express bag, which can avoid the situation where the driving mechanism at the input roller group A1 repeatedly starts and stops when the pre-stored amount of express bags is small, which is beneficial to prolonging the service life. Specifically, a first vertical rod A222 is set on the two side shells 0, and a layout frame A221 can be slidably set on the first vertical rod A222. The sliding of the first vertical rod A222 and the layout frame A221 can be further optimized by setting a linear bearing to achieve flexibility; two movable winding rollers A22 are symmetrically set on the layout frame A221 to ensure the stability of its structure, which can make its lifting stability better and avoid structural movement. The two fixed winding rollers A21 are specifically set to facilitate the manufacturing layout of the product, the maintenance of the staff, and can ensure that the express bags are wound in a more orderly manner, which is convenient for the staff to stop the winding layout.

[0040] As an improved specific implementation manner, the arrangement frame A221 is provided with an extension piece A223 extending downwards and corresponding to the first sensor A23 and the second sensor A24 for sensing.

[0041] like Figure 1 , 4 As shown, the extension sheet A223 can be specifically set to a width corresponding to the first sensor A23 and the second sensor A24, and it is extended downward to sense the first sensor A23 and the second sensor A24. This can avoid mutual interference between structures when the structures such as the movable winding roller A22 and the arrangement frame A221 are large, which is conducive to the optimal setting of the structure.

[0042] As an improved specific implementation manner, a rotating roller A4 for winding the express bag is further provided between the input roller group A1 and the winding roller group A2; a rotating roller A4 for winding the express bag is further provided between the winding roller group A2 and the rubber roller group A3.

[0043] like Figure 1 , 2 As shown in Figure 4, the rotating roller A4 is further optimized to effectively support and guide the express bag when the express bag is arranged between the input roller group A1, the winding roller group A2, and the rubber roller group A3, so that the express bag reaches the required height and avoids other components, thereby achieving a good conveying effect and avoiding interference between structures.

[0044] As an improved specific implementation method, the dynamic sealing and cutting component B2 includes a sealing and cutting body B21, a guide rod B22 and a rear plate B23. The sealing and cutting body B21 is arranged on the front outside of the shell 0, the guide rod B22 is divided into two groups and the front part is connected to the two sides of the sealing and cutting body B21, the guide rod B22 is slidably arranged on the shell 0, and the rear part of the guide rod B22 is connected to the rear plate B23. The rear plate B23 is arranged inside the shell 0 and connected to the first driving mechanism B3, and the third sensor B42 is corresponding to the rear plate B23 to sense when it is in place.

[0045] like Figure 1 , 2 As shown, the fixed sealing and cutting member B1 is arranged in front of the express bag packaging machine housing 0, and the sealing and cutting body B21 in the dynamic sealing and cutting member B2 is a corresponding component for closing and sealing the express bag with the fixed sealing and cutting member B1, which is arranged outside the front of the express bag packaging machine housing 0, and the guide rod B22 and the rear plate B23 can be adaptively arranged in the housing 0 (as shown in FIG. Figure 2 As shown), the overall appearance of the packaging machine is kept neat, the structures do not interfere with each other, and it is also easy to maintain. Two sets of guide rods B22 are connected to the sealing and cutting body B21 and the rear plate B23 on both sides, and the sealing and cutting body B21 and the rear plate B23 are kept stable when the guide rods B22 slide horizontally; preferably, the guide rods B22 are arranged on the housing 0 through linear bearings B6 to ensure smooth and flexible movement; the first driving mechanism B3 is arranged inside the housing 0, which is specifically connected to the rear plate B23 to achieve the driving of the sealing and cutting body B21; the adjustment mechanism B4 is also arranged in the housing 0, and the rear plate B23 can be specifically provided with a sensing sheet structure corresponding to the third sensor B42, so that the overall movement of the rear plate B23 does not interfere with the third sensor B42, and the sensing sheet on it is sensed when it moves to the position corresponding to the third sensor B42, so as to achieve the control of the stroke.

[0046] As an improved specific implementation, the first driving mechanism B3 is a cylinder, which is swingably arranged on the housing 0, and the cylinder shaft is connected to the rear plate B23.

[0047] like Figure 1 , 2 As shown in Figure 5, the specific cylinder is arranged backward, and the cylinder shaft extends backward to connect to the rear plate B23. The third sensor B42 is arranged on the side of the cylinder shaft and can be adjusted along the axial direction of the cylinder shaft. The cylinder is swingably arranged on the housing 0 through the shaft and bearing structure, and the corresponding connection position of the cylinder shaft and the rear plate B23 is also arranged as a swingable structure. The swinging mechanism enables the cylinder to better adapt to the movement and shaking of the machine or parts during movement, so as to keep the cylinder shaft in good operating condition, avoid stress damage and extend the service life.

[0048] As an improved specific implementation method, the third sensor B42 is arranged on a movable frame B43, and the movable frame B43 is slidably arranged on the sliding rod B44. The second driving mechanism B41 is connected to a screw rod B45, and the screw rod B45 is connected to the movable frame B43 for rotational drive. When the second driving mechanism B41 drives the screw rod B45 to rotate, it drives the movable frame B43 to translate.

[0049] like Figure 2 , 5 As shown, the slide bar B44 can be specifically set to two left and right bars, and the movable frame B43 is set thereon for stable axial sliding to ensure stable translational movement. Preferably, the movable frame B43 is slidably connected to the slide bar B44 through a linear bearing B6 to ensure smooth and flexible movement; the screw rod B45 is set between the two slide bars B44, and cooperates with the middle position of the movable frame B43 to drive, to ensure the stability of the overall movement. Preferably, the slider B7 is spirally matched with the screw rod B45, and the slider B7 is installed on the movable frame B43 for flexible transmission.

[0050] As an improved specific implementation method, the second driving mechanism B41 is a motor, which is connected to the screw rod B45 through a chain sprocket assembly B46; a coding wheel B5 is arranged at the screw rod B45, and a notch B51 for detecting the number of rotations is arranged on the coding wheel B5, and a fourth sensor B52 is arranged on the side corresponding to the notch B51 on the coding wheel B5, and when the coding wheel B5 rotates until the notch B51 corresponds to the fourth sensor B52, a feedback signal is used to determine the rotation status.

[0051] like Figure 1 , 2As shown in Figure 5, the height of the movable frame B43 is adjusted by a motor. The sprocket chain assembly B46 is specifically a sprocket set on one end of the screw rod B45 and the shaft of the motor, and then a chain is wound around several sprockets for transmission. The transmission is stable and will not slip, which can ensure the accuracy of height adjustment. When the motor is working, it can drive the rotation of the screw rod B45, thereby driving the stable linkage translation of the movable frame B43. Specifically, an encoding wheel B5 is set at one end of the screw rod B45 or the sprocket, and then cooperates with the fourth sensor B52. When an external control mechanism, such as a PLC, sends a debugging signal to the motor and limits the debugging distance of a specific value, the motor drives the screw rod B45 and the encoding wheel B5 to rotate synchronously. The fourth sensor B52 can accurately sense the number of rotations of the encoding wheel B5. After the corresponding number of rotations, the fourth sensor B52 can feedback a signal to stop the motor, thereby ensuring the accurate and stable position debugging of the movable frame B43 and improving the debugging accuracy. The set gap B51 is used for the fourth sensor B52 to sense the number of rotations. For example, in a specific implementation, one, two or three gaps B51 are evenly arranged on the circumference. Correspondingly, every time the encoding wheel B5 rotates 360 degrees, 180 degrees or 120 degrees, the gap B51 is sensed by the fourth sensor B52, which can well confirm the number of rotations of the encoding wheel B5, or rely on the fourth sensor B52 to cooperate with the control mechanism to well control the number of rotations of the encoding wheel B5. When designing, the distance that the movable frame B43 can be driven by the screw rod B45 to move when rotating a certain angle is set to achieve accurate control of the debugging distance. The number of gaps B51 can be flexibly set according to needs to achieve the purpose of different fine distance control.

[0052] As an improved specific implementation, a fifth sensor B47 for detecting the extreme movable position of the movable frame B43 is provided on both ends of the movable frame B43 in its movable direction. When the fifth sensor B47 detects that the movable frame B43 reaches the sensed position, a feedback signal stops the second driving mechanism B41.

[0053] like Figure 1 , 2 As shown in Figure 5, under the premise of automatic adjustment of the movable frame B43 by operating the control mechanism, in order to avoid the staff's misoperation of the movable frame B43, causing the movable frame B43 to move to the extreme positions at both ends, causing structural bumps, causing damage to components, and increasing maintenance costs, a fifth sensor B47 for detecting the extreme position is set at the side positions of both ends. When the movable frame B43 reaches the extreme position, it will be sensed by the fifth sensor B47, and the fifth sensor B47 can feedback a signal to stop the second driving mechanism B41, so as to avoid excessive movement and damage to components.

[0054] As an improved specific implementation method, it also includes a front baffle C4, which is arranged behind the rubber roller group A3, the fixed sealing and cutting piece B1, and the bag-carrying plate C31 for receiving express bags and items at the rear; a through hole C41 is provided on the front baffle C4 for the bag-carrying plate C31 to extend out, and a flipping drive mechanism C32 is arranged on the inner side of the front baffle C4; the bag-carrying plate C31 is rotatably arranged on a mounting frame C5 through a rocker rod C33, and the middle part of the rocker rod C33 is rotatably connected to the mounting frame C5, one side of which is connected to the bag-carrying plate C31, and the other side is connected to the flipping drive mechanism C32.

[0055] like Figure 3 , 7 As shown in FIGS. 8 and 9, the front baffle C4 is used to receive express bags and articles at the rear. It is preferred that the front baffle C4 is set to have a slight slope so that the express bags and articles can be supported by the front baffle C4 to a certain extent; then, through the setting of the through hole C41, the bag-carrying plate C31 is used to hold the articles and express bags on the outside, and the flip drive mechanism C32 can be set inside the front baffle C4 without occupying space, ensuring the order of the overall structure without interference. The middle part of the swing rod C33 can be rotatably set on the mounting frame C5 to form a lever structure, so that when the flip drive mechanism C32 on one side is working, it drives the bag-carrying plate C31 on the other side to swing to achieve position change.

[0056] As an improved specific implementation, the flip driving mechanism C32 is a cylinder, which is arranged on the mounting frame C5, and the cylinder shaft is connected to the rocker rod C33.

[0057] like Figure 7 , 8 As shown in FIG. 9 , a cylinder is specifically used to realize the swing and flipping of the bag-carrying plate C31. Relying on the characteristics of the cylinder having two working positions of extension and retraction, the stable switching of the bag-carrying plate C31 between the horizontal and inclined states can be well ensured, and the cost can be well controlled while ensuring the stability of the structure.

[0058] As an improved specific implementation method, the mounting frame C5 can be lifted and lowered on the second vertical rod C6, and is driven by a lifting drive mechanism C7 to adjust the height position of the mounting frame C5; the lifting drive mechanism C7 is a motor, which is connected to the screw slider assembly C72 through a sprocket chain assembly C71, and the screw slider assembly C72 is connected to the mounting frame C5 for linkage.

[0059] like Figure 7 , 8As shown in Figure 9, the bag-carrying board C31 is further configured as a height-adjustable structure. Specifically, the height position of the mounting frame C5 on the second vertical rod C6 is changed by operating the lifting drive mechanism C7 to complete the height change of the bag-carrying board C31, which can meet the needs of dragging express bags and items of more length specifications. The lifting drive mechanism C7 specifically uses a motor to adjust the height of the mounting frame C5. The sprocket chain assembly C71 specifically sets a sprocket on the screw of the screw slider assembly C72 and the shaft of the motor, and then a chain is wound around several sprockets for transmission. The transmission is stable and will not slip, which can ensure accurate height adjustment; the slider of the screw slider assembly C72 is set on the mounting frame C5 and meshes with the screw for transmission; when the motor is working, it can drive the rotation of the screw, thereby driving the stable linkage lifting of the mounting frame C5.

[0060] As an improved specific implementation, it also includes a second encoding wheel C8 arranged at the sprocket chain group C71 or the screw slider assembly C72, and a sixth sensor C81 for detecting the number of rotations of the second encoding wheel C8 is arranged corresponding to the second encoding wheel C8.

[0061] like Figure 8 , 9 As shown, the second encoding wheel C8 is specifically set at the position of the screw rod or the sprocket, and then cooperates with the sixth sensor C81. When the external control mechanism, such as PLC, sends a height adjustment signal to the motor and limits the adjustment height with a specific value, the motor drives the screw rod and the second encoding wheel C8 to rotate synchronously. The sixth sensor C81 can accurately sense the number of rotations of the second encoding wheel C8. After rotating the corresponding number of circles, the sixth sensor C81 can feedback a signal to stop the motor, thereby ensuring the accurate and stable lifting height of the mounting frame C5 and improving the accuracy of height position adjustment.

[0062] As an improved specific implementation method, a seventh sensor C91 for detecting the upper limit activity position of the mounting frame C5 and an eighth sensor C92 for detecting the lower limit activity position of the mounting frame C5 are provided in the height direction. When the seventh sensor C91 and the eighth sensor C92 detect that the mounting frame C5 has arrived, the feedback signal stops the lifting drive mechanism C7.

[0063] like Figure 8 , 9As shown, under the premise of automatic adjustment of the mounting frame C5 by operating the control mechanism, in order to avoid misoperation of the mounting frame C5 by the staff, such as mistakenly inputting an excessively large debugging size through the control mechanism (such as PLC) (such as clicking more numbers due to mistaken operation), the mounting frame C5 will structurally move to the extreme positions at both ends, causing structural bumps, damage to components, and increased maintenance costs. Therefore, the seventh sensor C91 and the eighth sensor C92 for detecting the upper and lower limit positions are set at the height position. When the mounting frame C5 reaches the extreme position, it will be sensed by the seventh sensor C91 and the eighth sensor C92. The seventh sensor C91 and the eighth sensor C92 can feedback signals to stop the lifting drive mechanism C7 to avoid excessive movement and damage to components.

[0064] As an improved specific implementation manner, the seventh sensor C91 and the eighth sensor C92 are both installed on a frame C94 having a waist-shaped hole C93, and the seventh sensor C91 and the eighth sensor C92 are installed at different positions of the waist-shaped hole C93 by fasteners to adjust the height.

[0065] like Figure 8 , 9 As shown, the upper and lower frames C94 are physical structures for specifically arranging the seventh sensor C91 and the eighth sensor C92, which extend in the height direction as a whole to form a vertical waist-shaped hole C93. The staff can detachably install the seventh sensor C91 and the eighth sensor C92 at different heights of the waist-shaped hole C93 through fasteners, thereby realizing the adjustment of the upper and lower limit positions of the mounting frame C5 sensing, which is convenient for the user to fine-tune the upper and lower activity range of the mounting frame C5 according to specific usage needs.

[0066] As an improved specific implementation, linear bearings C51 are respectively provided on both sides of the mounting frame C5, and the linear bearings C51 are penetrated on the second vertical rod C6 for sliding and lifting. In specific implementation, it is preferred that the linear bearings C51 and the second vertical rod C6 are lifted and slid to improve the smoothness of lifting, reduce wear between structures, and extend service life.

[0067] As an improved specific implementation, the rubber roller group A3 includes an upper rubber roller A31 and a lower rubber roller A32, the upper rubber roller A31 and the lower rubber roller A32 fit together to clamp the express bag and transport the express bag while rolling, the lower rubber roller A32 can be rotatably arranged on the bracket A33, the upper rubber roller A31 can be separated and fitted with the lower rubber roller A32 through a debugging mechanism A34, the debugging mechanism A34 includes a transverse axis A341, a resistance block A342 and an elastic member A343, the upper rubber roller A31 can be rotatably arranged on the transverse axis A341, the resistance block A342 is arranged at both ends of the transverse axis A341, and the lower side of the resistance block A342 abuts against the bracket A33. On the bracket A33, the elastic member A343 is used to limit the upper part of the resistance block A342, so that the upper rubber roller A31 is pressed against the lower rubber roller A32 and fits together; the resistance block A342 is cylindrical as a whole, and the horizontal axis A341 coincides with the axis of the resistance block A342. The outer periphery of the resistance block A342 has a recessed platform A3421, and the platform A3421 and the outer circumference of the resistance block A342 are of different sizes. The platform A3421 is pressed against the bracket A33. When the resistance block A342 is rotated, the outer circumference of the resistance block A342 is pressed against the bracket A33, so that the horizontal axis A341 is lifted to separate the upper rubber roller A31 and the lower rubber roller A32.

[0068] like Figure 3 , 6As shown, the express bag is clamped between the upper rubber roller A31 and the lower rubber roller A32 and transported when the two are running and rolling. The initial state of the resistance block A342 in the debugging mechanism A34 is that the platform A3421 with a small outer diameter is positioned downwardly against the lower bracket A33, and the elastic member A343 is used to press the resistance block A342 downward to limit the position, so as to keep the upper rubber roller A31 and the lower rubber roller A32 in good fit and clamping the express bag; when a roll of express bag is used up and needs to be replaced, the staff operates the resistance block A342, that is, rotates the resistance block A342, and rotates the cylindrical outer circumference with a large outer diameter downward to resist the lower bracket A33, at which time the entire resistance block A342 is lifted, and the horizontal axis A341 is lifted synchronously, and the upper rubber roller A31 is lifted as a whole after both sides are lifted, so that the upper rubber roller A31 and the lower rubber roller A32 are separated. At this time, the staff can replace the new express bag, which is wound around the winding roller in turn and passed between the upper rubber roller A31 and the lower rubber roller A32; after being arranged and leveled, the resistance block A342 is rotated and reset, and the upper rubber roller A31 and the lower rubber roller A32 are refitted, and the machine can resume operation. The overall cylindrical design does not change its height after being lifted, which is convenient for adjustment on both sides and maintaining the stability of the height position of the upper rubber roller A31. It is simpler in structure, greatly reducing the cost investment compared to the existing cylinder adjustment method, and relying on adjusting the pressure of the elastic member A343 or choosing to use the elastic member A343 with different pressure levels, the resistance pressure between the upper rubber roller A31 and the lower rubber roller A32 can be well controlled, which can better adapt to the delivery needs of express bags in different situations and avoid the situation where the pressure of the existing cylinder cannot be adjusted.

[0069] As an improved specific implementation method, a spiral member A3431 is provided on the upper part of the elastic member A343. The spiral member A3431 is adjustable on the bracket A33. When the spiral member A3431 is adjusted, the spiral member A3431 is moved forward or backward to change the pressure of the elastic member A343 on the resistance block A342.

[0070] like Figure 3 , 6 As shown, in the specific implementation, the bracket A33 can be additionally provided with two sets of upper and lower sub-brackets, the lower sub-bracket is used to cooperate with the resistance block A342, and the upper sub-bracket is used for the installation of the spiral member A3431 to limit the elastic member A343, and the spiral member A3431 is used to rotate to change its downward screwing degree, so as to change the compression state of the elastic member A343, thereby adjusting the pressure of the elastic member A343 on the resistance block A342, and then adjusting the extrusion force between the upper rubber roller A31 and the lower rubber roller A32, so as to flexibly control the clamping state of the express bag, so that the staff can debug according to the specific needs of the express bags of different materials and specifications when conveying, so as to ensure the stability of the conveying.

[0071] As an improved specific implementation manner, a handle A3422 for manually driving the rotation is provided on the interference block A342.

[0072] like Figure 3 , 6 As shown, the specifically arranged handle A3422 increases the lever arm, allowing the staff to rotate the resistance block A342 more easily with less force, thereby reducing the difficulty of debugging; and its setting cost is lower, which is more practical than setting up an electric drive mechanism, and can reduce the complexity of the mechanism, making it easier to manage and maintain.

[0073] As an improved specific implementation method, the elastic member A343 is a spring, which can be well set up and can change the pressure well when the extrusion degree is changed, which is convenient for debugging; and it has a low cost and is easy to maintain and replace.

[0074] As an improved specific implementation, a mutually meshing transmission gear A35 is provided between the upper rubber roller A31 and the lower rubber roller A32.

[0075] like Figure 3 , 6 As shown, a mutually meshing transmission gear A35 is specifically arranged on the side of the upper rubber roller A31 and the lower rubber roller A32, so that the two can transmit to each other when driven to rotate, thereby improving the stability of the express bag transportation driven by the rotation of the two, avoiding the slipping phenomenon that may occur in the prior art that only relies on the contact transmission of the two rubber rollers, and avoiding the occurrence of wrinkles in the express bag due to slipping.

[0076] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A courier bag packaging machine, characterized in that: The invention comprises a conveying mechanism (A) for conveying express bags, a sealing and cutting mechanism (B) for sealing and cutting the mouth of the express bags, and a bag-carrying mechanism (C) for receiving the express bags and the articles therein, wherein the conveying mechanism (A) comprises an input roller group (A1) for placing a whole tube of express bags, a winding roller group (A2) for winding the express bags conveyed from the input roller group (A1), and a rubber roller group (A3) arranged at an output end for clamping and outputting the express bags, wherein the winding roller group (A2) comprises a fixed winding roller (A21) arranged at the top and a movable winding roller (A22) arranged at the bottom, wherein the movable winding roller (A22) is arranged on a housing (0) so as to be movable up and down, and the express bags between the input roller group (A1) and the rubber roller group (A3) are sequentially wound around the fixed winding roller (A21) and the movable winding roller (A22) arranged at the bottom. A21) and a movable winding roller (A22) are used for pre-storage; when the rubber roller group (A3) pulls the express bag, the express bag decreases and the movable winding roller (A22) is pulled to make it rise; when the input roller group (A1) releases the express bag, the express bag increases and the movable winding roller (A22) is lowered to make it fall; a first sensor (A23) for detecting the height of the movable winding roller (A22) is provided on the side of the movable winding roller (A22); when the movable winding roller (A22) rises and leaves the sensing range of the first sensor (A23), the first sensor (A23) feedbacks a signal to start the input roller group (A1) to release the express bag; when the movable winding roller (A22) descends to the first sensor (A23) and is sensed, the first sensor (A23) feedbacks a signal to stop the input roller group (A1); The sealing and cutting mechanism (B) comprises a fixed sealing and cutting member (B1) and a dynamic sealing and cutting member (B2), wherein the dynamic sealing and cutting member (B2) is controlled by a first driving mechanism (B3) to perform reciprocating motion and close or separate from the fixed sealing and cutting member (B1), and further comprises an adjusting mechanism (B4), wherein the adjusting mechanism (B4) comprises a second driving mechanism (B41) and a third sensor (B42), wherein the second driving mechanism (B41) controls the third sensor (B42) to move along the moving direction of the dynamic sealing and cutting member (B2) when it is started and stops the third sensor (B42) when it is closed; the third sensor (B42) is arranged corresponding to the dynamic sealing and cutting member (B2) and defines its maximum separation position, and when the first driving mechanism (B3) drives the dynamic sealing and cutting member (B2) to separate from the fixed sealing and cutting member (B1) and reaches the position of the third sensor (B42), the dynamic sealing and cutting member (B2) is sensed by the third sensor (B42), and the third sensor (B42) feeds back a signal to stop the first driving mechanism (B3); The bag-carrying mechanism (C) comprises a bag-carrying plate (C31) and a flipping drive mechanism (C32); the rubber roller group (A3), the fixed sealing and cutting member (B1), and the bag-carrying plate (C31) are arranged in sequence in the height direction; the flipping drive mechanism (C32) is connected to the bag-carrying plate (C31) and is used to drive the bag-carrying plate (C31) to flip, thereby switching the bag-carrying plate (C31) between a horizontal state and an inclined state.

2. The express bag packaging machine according to claim 1, characterized in that: A second sensor (A24) for detecting the height of the movable winding roller (A22) is also provided on the side of the movable winding roller (A22). The second sensor (A24) is located below the first sensor (A23) and corresponds to the lowering limit position of the movable winding roller (A22). When the movable winding roller (A22) descends to the second sensor (A24) and is sensed, the second sensor (A24) feeds back a signal to stop the operation of the input roller group (A1) and the rubber roller group (A3).

3. The express bag packaging machine according to claim 2, characterized in that: The two fixed winding rollers (A21) are arranged in a left-right arrangement, and the two movable winding rollers (A22) are arranged in a left-right arrangement. The express bags are passed around the fixed winding rollers (A21) and the movable winding rollers (A22) at intervals to form a multi-layer pre-storage express bag. The two movable winding rollers (A22) are symmetrically arranged on an arrangement frame (A221), and the arrangement frame (A221) is arranged on a first vertical rod (A222) so as to be movable up and down. The two fixed winding rollers (A21) are symmetrically arranged on both sides of the upper end of the first vertical rod (A222), and the positions of the fixed winding rollers (A21) on both sides correspond to the movable winding rollers (A22) below.

4. A courier bag packaging machine according to claim 1, 2 or 3, characterized in that: The dynamic sealing and cutting component (B2) comprises a sealing and cutting body (B21), a guide rod (B22) and a rear plate (B23); the sealing and cutting body (B21) is arranged outside the front of the shell (0); the guide rod (B22) is in two groups and the front part is connected to the two sides of the sealing and cutting body (B21); the guide rod (B22) is slidably arranged on the shell (0); the rear part of the guide rod (B22) is connected to the rear plate (B23); the rear plate (B23) is arranged inside the shell (0) and connected to the first driving mechanism (B3); the third sensor (B42) is arranged corresponding to the rear plate (B23) for sensing when it is in place.

5. The express bag packaging machine according to claim 4, characterized in that: The third sensor (B42) is arranged on a movable frame (B43), and the movable frame (B43) is slidably arranged on a sliding rod (B44). The second driving mechanism (B41) is connected to a threaded rod (B45), and the threaded rod (B45) is connected to the movable frame (B43) for rotational driving. When the second driving mechanism (B41) drives the threaded rod (B45) to rotate, it drives the movable frame (B43) to translate.

6. The express bag packaging machine according to claim 5, characterized in that: The second driving mechanism (B41) is a motor connected to a lead screw (B45) via a chain sprocket assembly (B46); a coding wheel (B5) is arranged at the lead screw (B45); a notch (B51) for detecting the number of rotations is arranged on the coding wheel (B5); a fourth sensor (B52) is arranged on the side corresponding to the notch (B51) on the coding wheel (B5); when the coding wheel (B5) rotates until the notch (B51) corresponds to the fourth sensor (B52), a feedback signal is provided to determine the rotation status.

7. The express bag packaging machine according to claim 1, 2 or 3, characterized in that: The invention also comprises a front baffle plate (C4), which is arranged behind the rubber roller group (A3), the fixed sealing and cutting member (B1) and the bag-carrying plate (C31) and is used to receive express bags and articles at the rear; the front baffle plate (C4) is provided with a through hole (C41) for the bag-carrying plate (C31) to extend out; the flipping drive mechanism (C32) is arranged on the inner side of the front baffle plate (C4); the bag-carrying plate (C31) is rotatably arranged on a mounting frame (C5) through a swing rod (C33); the middle part of the swing rod (C33) is rotatably connected to the mounting frame (C5), one side of which is connected to the bag-carrying plate (C31) and the other side of which is connected to the flipping drive mechanism (C32).

8. The express bag packaging machine according to claim 7, characterized in that: The mounting frame (C5) is escalably arranged on the second vertical rod (C6), and is driven by a lifting drive mechanism (C7) to adjust the height position of the mounting frame (C5); the lifting drive mechanism (C7) is a motor, which is connected to a screw slider assembly (C72) via a sprocket chain assembly (C71), and the screw slider assembly (C72) is connected to the mounting frame (C5) for linkage.

9. The express bag packaging machine according to claim 1, 2 or 3, characterized in that: The rubber roller group (A3) comprises an upper rubber roller (A31) and a lower rubber roller (A32). The upper rubber roller (A31) and the lower rubber roller (A32) fit together to clamp the express bag and convey the express bag while rolling. The lower rubber roller (A32) can be rotatably arranged on the bracket (A33). The upper rubber roller (A31) can be separated from and fitted with the lower rubber roller (A32) through a debugging mechanism (A34). The debugging mechanism (A34) comprises a transverse axis (A341), a resistance block (A342) and an elastic member (A343). The upper rubber roller (A31) can be rotatably arranged on the transverse axis (A341). The resistance blocks (A342) are arranged at both ends of the transverse axis (A341). The lower side of the resistance block (A342) abuts against the bracket (A33). 33), the upper part of the resistance block (A342) is restrained by an elastic member (A343), so that the upper rubber roller (A31) is pressed against the lower rubber roller (A32) and fits together; the resistance block (A342) is cylindrical as a whole, the horizontal axis (A341) coincides with the axis of the resistance block (A342), the outer periphery of the resistance block (A342) is provided with a recessed platform (A3421), the platform (A3421) and the outer circumference of the resistance block (A342) are of different sizes, the platform (A3421) is pressed against the bracket (A33), when the resistance block (A342) is rotated, the outer circumference of the resistance block (A342) is pressed against the bracket (A33), so that the horizontal axis (A341) is lifted to separate the upper rubber roller (A31) and the lower rubber roller (A32).

10. The express bag packaging machine according to claim 9, characterized in that: A spiral member (A3431) is arranged on the upper part of the elastic member (A343). The spiral member (A3431) is adjustable on the bracket (A33). When the spiral member (A3431) is adjusted, the spiral member (A3431) moves forward or backward, thereby changing the pressure of the elastic member (A343) on the resistance block (A342).

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