CN111232275A - Film covering machine - Google Patents

Abstract

The invention discloses a film covering machine which comprises an arrangement frame, an upper sealing cutting piece, a lower sealing cutting piece, feeding mechanisms, two sets of unwinding devices, a control mechanism and a movable frame, wherein the upper sealing cutting piece and the lower sealing cutting piece are arranged on the arrangement frame in an up-and-down mode, the feeding mechanisms are arranged on two sides of the lower sealing cutting piece, the two sets of unwinding devices are respectively arranged on the upper portion and the lower portion of the feeding mechanisms, the upper sealing cutting piece is driven by a first air cylinder to move, the movable frame can be arranged on the arrangement frame in an up-and-down mode, the control mechanism is used for sending signals to adjust the height of the movable frame, a first sensor is arranged on the movable frame, and the first sensor is used for feeding back signals to enable the first air cylinder to stop when the upper sealing cutting piece. The height position of the upper first sensor of the movable frame is controlled by the control mechanism, when the upper sealing and cutting piece is sealed and cut, the upper sealing and cutting piece is reset upwards and reaches the first sensor, the feedback signal stops the upper sealing and cutting piece, the stroke of the upper sealing and cutting piece is made to be as small as possible, the time required by the whole sealing and cutting action is effectively reduced, and the product conveying and packaging efficiency is improved.

Description

a film wrapping machine

technical field

The invention relates to the field of vacuum packaging, in particular to a film sleeve machine.

Background technique

The film wrapping machine is mainly used for packaging. It seals and cuts the product to be packaged, and then performs heat shrink packaging after sealing and cutting, that is, the subsequent sequence is generally connected to the heat shrink machine for matching use, so that the item can achieve a perfect packaging effect, which is convenient for people in the later stage. moving and transportation.

The film sleeve machine adopts input and output conveyor belts. A sealing and cutting mechanism is set between the two conveyor belts. The packaging film is set to two rolls up and down. The upper and lower films are transported to the position of the sealing and cutting mechanism through the unwinding mechanism. The end of the film has been sealed and cut in the previous step. When the product reaches the sealing and cutting mechanism from the conveyor belt on the input side, it will continue to travel against the film through the sealing and cutting mechanism to the conveyor belt on the output side, and the sensor will send a signal to stop it at the appropriate position. Then the sealing and cutting structure seals and cuts the film at the back, heat seals the upper and lower films into one and cuts it from the middle, and completes the film on the product.

The sealing and cutting mechanism of the existing laminating machine is generally driven by the cylinder to close up and down to complete the sealing and cutting, and after completion, the upper and lower parts are separated and returned to the original position. For the sealing and cutting of products of different specifications, it is a waste of time to operate the small size with the largest shape range. Therefore, Originally, the sealing and cutting efficiency would be improved by adjusting the height position of the upper and lower sealing and cutting parts of the sealing and cutting mechanism, but this method requires debugging of fasteners such as bolts and nuts, and the simultaneous height adjustment of the sealing and cutting parts and the cylinder. The overall structure is complex and the debugging efficiency is low. .

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the purpose of the present invention is to provide a film sleeve machine, which can flexibly adjust the stroke of the sealing and cutting piece according to the different specifications of the processed products, improve the sealing and cutting rate, and reduce the time for shutdown and debugging.

The present invention provides the following technical solutions: a film covering machine, comprising an arrangement frame, an upper sealing and cutting piece that can be moved up and down on the upper part of the arrangement frame, a lower sealing and cutting piece fixedly arranged at the lower part of the arrangement frame, and a lower sealing and cutting piece arranged on both sides of the lower sealing and cutting piece. The feeding mechanism, the upper unwinding device and the lower unwinding device respectively arranged above and below the feeding mechanism, the upper part of the arrangement frame is provided with a first air cylinder for driving the movement of the upper sealing and cutting piece, and also includes a control mechanism and a movable frame, the movable frame can be moved up and down The movable frame is arranged on the arrangement frame. The control mechanism is used to send a signal to adjust the height of the movable frame. The movable frame is provided with a first sensor. The first sensor is used to detect when the upper sealing and cutting piece reaches its corresponding position. A stop is made to define the rest position of the upper seal.

As an improvement, it also includes a pressing mechanism. The pressing mechanism is located on the discharge side of the upper sealing and cutting piece and is arranged on the movable frame to adjust the upper and lower positions with the movable frame. The pressing mechanism includes a second air cylinder and is driven by the second air cylinder. The pressure plate that moves up and down to press the product during sealing and cutting.

As an improvement, it also includes a film wrapping mechanism. The film wrapping mechanism is located on the feeding side of the upper sealing and cutting member and is arranged on the movable frame to adjust the upper and lower positions with the movable frame. Several rollers to go around.

As an improvement, the roller shafts are two corresponding to the projected positions in the height direction, and the distance between the two roller shafts is larger than the diameter of the roller shafts.

As an improvement, a film pulling roller is arranged between the lower sealing and cutting part and the feeding mechanism on the feeding side. The film pulling roller is driven by power to rotate, and the film at the lower unwinding device is fed from the feeding mechanism on the feeding side. The rolls are bypassed to the lower sealing and cutting part, and the film-drawing roll is used to drive the product reaching the film-drawing roll to travel together with the pressed film.

As an improvement, the film pulling roller and the feeding mechanism on the feeding side are driven by a common driving mechanism.

As an improvement, the feeding mechanism on the feeding side includes a conveyor belt and several roller shafts for winding the conveyor belt. The several roller shafts are driven by a motor to rotate, and a roller shaft close to the film-drawing roller is on the side of the film-drawing roller. A gear set is arranged on the side, and the gear set drives the roller shaft to be linked with the film-pulling roller.

As an improvement, the upper and unwinding device includes a placement roller for placing the entire film, a pinhole wheel for pinning the film, a drive roller for winding the film, and a main driving roller, the placement roller, and the pinhole wheel. , The main driving roller and the transmission roller are arranged in turn for winding the film in turn. The main driving roller is connected to the first driving mechanism to provide the main power to pull the film at the placement roller and the pinhole wheel. When the driving roller is pulled by the film to rotate at a certain angle, the third sensor is triggered, and the feedback signal of the third sensor causes the first driving mechanism to start the film feeding.

As an improvement, the arrangement frame is provided with an auxiliary driving roller tangentially matched with the main driving roller, the auxiliary driving roller is driven to rotate by the main driving roller, and the film passes between the main driving roller and the auxiliary driving roller for transmission and transportation.

As an improvement, the two ends of the transmission roller are respectively swingably arranged on the arrangement frame through a swing rod, the swing rod swings around a third rotating shaft, and a sensing block is arranged on the third rotating shaft, and the side of the sensing block is provided with a third rotating shaft. There are three sensors, and the sensing block has a protrusion or groove for being sensed by the third sensor. When the sensing block turns to the protrusion or groove corresponding to the third sensor, a feedback signal of the third sensor is triggered.

The beneficial effects of the present invention are as follows: the movable rack is controlled by the control mechanism, thereby moving the first sensor on the movable rack. After adjusting the height of the movable rack through the control mechanism, the user can adjust the height specification of the product to be sealed, cut and packaged. The sealing and cutting piece stays at the lowest position where a product can pass normally, that is, the corresponding height adjusted by the first sensor. When the upper sealing and cutting piece is reset and reaches the first sensor after sealing and cutting, the feedback signal stops the upper sealing and cutting piece, so that it can be adjusted to the minimum. It can effectively reduce the time required for the entire sealing and cutting action, improve the efficiency of product transportation and packaging, thereby increasing the output and bringing better economic benefits; and compared with the original method of debugging the height of sealing and cutting parts, it is greatly simplified and effective. It reduces the difficulty of debugging and the time-consuming downtime of debugging.

Description of drawings

FIG. 1 is a schematic diagram 1 of the three-dimensional structure of the laminator of the present invention.

FIG. 2 is an enlarged view of M in FIG. 1 .

FIG. 3 is a schematic diagram 2 of the three-dimensional structure of the laminator of the present invention.

FIG. 4 is an enlarged view of N in FIG. 3 .

FIG. 5 is a three-dimensional schematic diagram of the three-dimensional structure of the laminator of the present invention.

FIG. 6 is an enlarged view of P in FIG. 5 .

FIG. 7 is a schematic diagram 4 and a partial enlarged view of the three-dimensional structure of the laminator of the present invention.

Fig. 8 is a three-dimensional structural schematic diagram and a partial enlarged view of the upper and unwinding device of the film sleeve machine of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1, 2, 3, 4, 5, 6, 7, and 8, it is a specific embodiment of the coating machine of the present invention. This embodiment includes an arrangement frame 1, an upper sealing and cutting member 2 that can be moved up and down on the upper part of the arrangement frame 1, a lower sealing and cutting member 3 that is fixedly arranged at the lower part of the arrangement frame 1, a feeding mechanism 4 arranged on both sides of the lower sealing and cutting member 3, and The upper unwinding device 5 and the lower unwinding device 6 are respectively arranged above and below the feeding mechanism 4. The upper part of the arrangement frame 1 is provided with a first air cylinder 20 for driving the movement of the upper sealing and cutting member 2, and also includes a control mechanism 15 and a movable frame 16. The movable frame 16 is arranged on the arrangement frame 1 so as to be movable up and down. The control mechanism 15 is used to send a signal to adjust the height of the movable frame 16. The movable frame 16 is provided with a first sensor 17, and the first sensor 17 is used to detect the upper sealing and cutting piece. When the 2 reaches its corresponding position, the feedback signal causes the first air cylinder 20 to stop, so as to define the stop position of the upper sealing and cutting member 2 .

When the present invention is in use, the lower film passes upward between the feeding mechanism 4 on the feeding side and the lower sealing and cutting member 3, and then extends to the lower sealing and cutting member 3, and the upper film passes from the side of the upper sealing and cutting member 2 (the upper part corresponding to the lower film ) pull down and connect with the lower film by heat sealing (the back end of the upper and lower films when the previous product is heat-sealed is the front end here); when the product is transported to the lower sealing and cutting part 3, the product will push the upper and lower films to travel together, The product covered with film up and down reaches the conveyor belt on the discharge side and stops, and the rear end of the film is heat-sealed by the combination of the lower sealing and cutting part 3 and the upper sealing and cutting part 2 . The user can input the height data corresponding to the product through the control mechanism 15 to make the movable frame 16 reach the corresponding height, so that the upper sealing and cutting member 2 reaches the first sensor 17 and is detected when the upper sealing and cutting member 2 finishes one sealing and cutting and then resets upward. The sensor 17 feeds back a signal to the control mechanism 15, and the control mechanism 15 stops the first air cylinder 4, so that the upper sealing and cutting member 2 stays at the most suitable stroke height for the corresponding product, which can be preset by the user, such as the product The height of a few centimeters allows the product to pass smoothly, and the stroke is kept as short as possible, reducing the time required for the entire sealing and cutting movement, increasing the processing volume per unit time, thereby increasing the output, and bringing economic benefits to users. The control mechanism 15 can preferably be realized by using a programmable controller. As a mature technology, the programmable controller can be configured by the manufacturer of the laminator, so that the user can easily input and debug the dimensions that need to be debugged; this kind of debugging Compared with the original manual method of manually adjusting the height of the sealing and cutting parts, the method greatly reduces the difficulty of debugging and the time-consuming of shutdown and debugging, and improves the automation level and the debugging efficiency when dealing with cartons of different specifications. The first sensor 17 may preferably be a proximity switch, or other prior art sensor types that may be selected to sense the arrival of an object.

As an improved specific embodiment, it also includes a pressing mechanism 18. The pressing mechanism 18 is located on the discharge side of the upper sealing and cutting member 2 and is arranged on the movable frame 16 to adjust the upper and lower positions with the movable frame 16. The pressing mechanism 18 includes The second air cylinder 181 and the pressing plate 182 which is driven by the second air cylinder 181 to move up and down and press the product during sealing and cutting.

As shown in Figure 1-4, in order to make the film wrapping machine seal and cut the film more evenly, so that the subsequent heat shrinking machine can better shrink a flat outer film to wrap the product and ensure the packaging quality, the machine can be further set to lower pressure The mechanism 18 is used to press and position the product during sealing and cutting to keep the position of the film and the product stable, and the sealing and cutting mechanism can better complete the sealing and cutting work; the pressing mechanism 18 presses the product on the discharge side conveyor belt to achieve positioning. The push-down mechanism 18 is integrated with the structure of the movable frame 16, so that the push-down mechanism 18 can flexibly adjust the height to adapt to the height of the product; such a specific second cylinder 181 can choose a specification with a short stroke to drive the pressure plate 182 It only needs to move a small stroke; compared with the original set higher to take care of large-sized products, its active stroke is shortened, the time required for the pressing and retracting movement can be shortened, the processing volume per unit time is increased, and the On the other hand, the cylinder with large stroke also has the disadvantages of decreased stability and shortened long-term service life due to long stroke.

As an improved specific embodiment, the film winding mechanism 19 is also included. The film winding mechanism 19 is located on the feeding side of the upper sealing and cutting member 2 and is arranged on the movable frame 16 to adjust the up and down position with the movable frame 16. The film winding mechanism 19 includes Several roller shafts 191 are arranged in the height direction for the winding of the upper film.

As shown in Figure 5-7, the upper film is sent to the lower sealing and cutting part 3 through the arranged multiple rollers, and the distance is relatively long. Setting the roller shaft 191 in the middle to wrap the film can avoid the fluttering of the film in the long distance, and the It is conducive to the orderly transportation of the film; the original structure of the shaft around the film is fixed at a height. When the size of the processed product is small, mainly because the height is short, the film arrives after bypassing the shaft located at a higher position. The distance between the upper surface of the product is large, the film may be fluttering and become unstable, and there is a possibility that the film is unstable and wrinkled; the film wrapping mechanism 19 is integrated with the structure of the movable frame 16, so that the film wrapping mechanism 19 can be flexibly Adjust the height to adapt to the height of the product; after the upper film bypasses several rollers 191, the shorter distance below is the product to be covered and cut, the film can be stably driven by the product and pulled away to the discharge side, and the film is not easy to produce Fluttering folds to ensure the quality of the sealing and cutting sleeve film.

As an improved specific embodiment, the roller shafts 191 are two corresponding to the projected positions in the height direction, and the distance between the two roller shafts 191 is greater than the diameter of the roller shafts 191 .

As shown in Figures 5-7, at least two rollers 191 are used, which can well realize the winding arrangement of the film. By passing around the lower roller shaft 191 from the outside, it moves from the bottom to the discharge side, which plays the role of orderly conveying the film; further, the distance between the two roller shafts 191 is set larger than the roller shaft 191 The diameter of the film makes it smoother when the film is bypassed between the two, and it is not easy to produce structural resistance to the film, which is conducive to the smooth transportation of the film; and the projection positions of the two roller shafts 191 in the height direction correspond to the film, so that the film bypasses in an orderly manner , it will not generate too much resistance when bypassing the two rollers 191 .

As an improved specific embodiment, the movable frames 16 are two groups located on the left and right outer sides of the upper sealing and cutting member 2. The movable frame 16 is U-shaped as a whole, and the middle space is used for arranging the first vertical rod 21, and the upper sealing and cutting member 2 passes through it. Set on the first vertical rod 21 to move up and down, the U-shaped two sides of the movable frame 16 are used for the transmission of the up and down movement through the screw rod 163 and the up and down movement of the second vertical rod 164 .

As shown in Figures 2 and 4, what is shown is the movable frame 16 on the far side, and there is a movable frame 16 with the same structure in the symmetrical position (in the figure, it is blocked by the arrangement frame 1 and cannot be seen); the whole movable frame 16 U-shaped to form a space in the middle to arrange the first vertical rod 21, so that the upper sealing and cutting member 2 can be arranged on the first vertical rod 21 to slide up and down; and the sliding and transmission of the movable frame 16 can be The screw rod 163 is realized by means of the second vertical rod 164, and the screw rod 163 can cooperate with the slider structure specifically provided on the movable frame 16 to engage and drive; the second vertical rod 164 passes through the movable frame 16 to ensure that the movable frame 16 moves up and down For stability, as shown in the figure, one set of screw rods 163 can be set at one time, and second vertical rods 164 are set on both sides to keep the structure stable and movable.

As an improved specific embodiment, the arrangement frame 1 is provided with two sets of upper and lower second sensors 165 in the height direction. The upper and lower sets of the second sensors 165 are used to detect the upper and lower limit positions of the movable frame 16. When it is detected that the movable frame 16 reaches its corresponding position, the feedback signal causes the movable frame 16 to stop.

As shown in Figures 2 and 4, under the premise of automatic driving by the operation of the control mechanism 15, in order to avoid the user's misoperation on the movable frame 16, for example, the control mechanism 15 (programmable controller) mistakenly inputs excessive debugging. Size (for example, the number is added in the case of misoperation), so that the movable frame 16 will travel to the limit position of both ends on the structure, resulting in a bump on the structure. If the parts are damaged, there may be errors in the movement of the structure, or it needs to be replaced to increase the shutdown. Therefore, the second sensor 165 is installed at the height position. When the movable frame 16 reaches the limit position, it will be sensed by the second sensor 165, and the second sensor 165 can feed back a signal to stop the movable frame 16, so as to avoid excessive travel. cause damage to parts. The second sensor 165 may preferably be a proximity switch, or alternatively other prior art sensor types that can sense the arrival of an object.

As an improved specific embodiment, the arrangement frame 1 is further provided with a second extension frame 11 , and the second extension frame 11 has a vertical second waist-shaped hole 12 for installing the second sensor 165 . The sensor 165 is installed in the second waist-shaped hole 12 to correspondingly adjust the upper and lower limit positions of the movable frame 16 at different heights.

As shown in FIGS. 2 and 4 , the second extension frame 11 is a bracket on which the second sensor 165 is specifically arranged, which extends in the height direction as a whole, so as to facilitate the formation of a vertical second waist-shaped hole 12 , and the user can tighten the The second sensor 165 can be detachably installed at different height positions of the second waist-shaped hole 12, so that the adjustment of the upper and lower limit positions of the movable frame 16 can be realized, which is convenient for the user to limit the movement according to the specific use needs of the laminator. The range of movement up and down the shelf 16.

As an improved specific embodiment, the screw rod 163 matched with the two sets of movable frames 16 is connected to a motor 167 through the chain sprocket set 166 for driving. As shown in FIG. 4 , a driving mechanism can be realized to drive the screw rods 163 on both sides to move synchronously, so as to ensure the stable and orderly lifting of the structure in this transmission state.

As an improved specific embodiment, the movable frame 16 is provided with a first extension frame 161 extending upward, and the first extension frame 161 has a vertical first waist-shaped hole 162 for installing the first sensor 17 , The different heights of the first sensor 17 installed in the first waist-shaped hole 162 are correspondingly adjusted for the relative height distance between the upper sealing and cutting member 2 and the movable frame 16 when the upper sealing and cutting member 2 stays.

As shown in FIG. 2 , the first extension bracket 161 is a bracket on which the first sensor 17 is specifically arranged, and the whole extends in the height direction, so as to facilitate the formation of a vertical first waist-shaped hole 162 . The first sensor 17 is disassembled and installed at different height positions of the first waist-shaped hole 162, so that the relative height of the upper sealing and cutting member 2 and the movable frame 16 can be adjusted, so as to ensure the normal passage of the upper film and ensure the space between the parts. There will be no interference, etc.

As an improved specific embodiment, a film pulling roller 7 is arranged between the lower sealing and cutting member 3 and the feeding mechanism 4 on the feeding side. The film pulling roller 7 is driven by power to rotate, and the film at the lower unwinding device 6 is On the feeding side, the feeding mechanism 4 and the film pulling roller 7 are bypassed to the lower sealing and cutting part 3, and the film pulling roller 7 is used to drive the product reaching the film pulling roller 7 and the film pressed by it to travel together.

As shown in Figures 5, 6 and 7, a film pulling roller 7 is added on the basis of the original structure. The lower film passes upward between the feeding mechanism 4 and the film pulling roller 7 on the feeding side, and then bypasses the film pulling roller. 7. Extend the sealing and cutting piece 3 downward. When the product is conveyed by the feeding mechanism 4 on the feeding side to the film pulling roller 7, the product is pressed on the film pulling roller 7, and the pressed lower film and the product can be driven by the film pulling roller 7. Moving, here the film pulling roller 7 plays a good active driving force for the film, which can assist the driving roller 53 at the upper unwinding device 5 and the lower unwinding device 6 to discharge the film, and the active film pulling of the film pulling roller 7 is the upper The film and the lower film overcome the weight of the transmission roller 53 at the upper unwinding device 5 and the lower unwinding device 6 to provide the power to discharge the film, which can ensure that when the product is light, it can also drive the film to enter the lower sealing and cutting part 3 to discharge 1. The side feeding mechanism 4 is conducive to the adaptability of the laminating machine to process lighter products, as well as to drive thicker and heavier films, increase the types of packaging, and meet the increasingly rich packaging needs of manufacturers without having to purchase multiple laminating machines. To adapt to product specifications and reduce costs.

As an improved specific embodiment, the film pulling roller 7 and the feeding mechanism 4 on the feeding side are driven by a common driving mechanism.

In the above-mentioned embodiment, there is no need to add an additional driving mechanism, and the driving mechanism of the feeding mechanism 4 on the feeding side can be connected through the transmission mechanism to directly drive the film pulling roller 7 to work, so that the feeding mechanism 4 on the feeding side and the pulling mechanism can be realized. The joint action of the film roller 7 meets the conveying requirements of the products on the feeding side, and its synchronous driving has good stability, and there is no need to increase the extra cost to increase the driving mechanism and control components.

As an improved specific embodiment, the feeding mechanism 4 on the feeding side includes a conveyor belt 41 and several roller shafts 42 for winding the conveyor belt 41. The several roller shafts 42 are driven by a motor to rotate, and are close to the film pulling roller 7. A roller shaft 42 cooperates with the film pulling roller 7 and is provided with a gear group 8 on the side, and the gear group 8 drives the roller shaft 42 to be linked with the film pulling roller 7 .

As shown in FIGS. 6 and 7 , the feeding mechanism 4 uses the prior art conveyor belt 41 and roller shaft 42 to convey the product, which can be controlled by the existing control components to start and stop; The roller shaft 42 and the film pulling roller 7 are connected and driven through the gear set 8, so that the roller shaft 42 and the film pulling roller 7 can rotate in the same direction. The film is actively pulled; and the gear set 8 is used for transmission to ensure high transmission efficiency and low cost, which can improve the working stability of the film sleeve machine and ensure cost control.

As an improved specific embodiment, the height of the upper end of the film pulling roller 7 is consistent with the height of the upper support surface of the conveyor belt 41 .

As shown in Figures 6 and 7, the film pulling roller 7, while realizing the function of pulling the film, also acts as the extension of the conveyor belt 41 in the horizontal direction, so as to carry out good forward conveying of the product; the height defined here remains the same, Specifically, the two can be kept at the same height, or arranged without obvious height difference, so that when the product reaches the film pulling roller 7 from the conveyor belt 41, there will be no bumps depending on the size of the product itself, and the conveying can be completed stably.

As an improved specific embodiment, the height of the upper end of the lower sealing and cutting member 3 is consistent with the height of the upper end of the film drawing roller 7 .

As shown in Figures 6 and 7, compared with some structures in the prior art that are closed and heat-sealed with the upper sealing and cutting member 2 by lifting and lowering, the film sleeve machine of the present invention adopts a relatively fixed lower sealing and cutting member 3, the so-called relative fixed , that is, an elastic member will be provided under the specific sealing and cutting member of the lower sealing and cutting member 3 for buffering (the spring implemented in the partially enlarged view in FIG. 7 ), and there will be a certain downward pressure when it is closed with the upper sealing and cutting member 2 to ensure sufficient closure. , to better complete the heat sealing; the height of the upper end of the lower sealing and cutting member 3 is consistent with the height of the upper end of the film pulling roller 7, which is also good to support the passing of the product, so that there is no obvious gap in the direction of the product conveying, such as the prior art. There will be a gap in the position of the lower sealing and cutting member 3 that is raised and lowered before the heat sealing. The lower sealing and cutting member 3 of the present invention basically supplements the gap, so that the product can pass stably without bumps, and can also be used for Handle packaging for smaller size products. The heights defined here are kept the same, specifically, the two can be kept at the same height, or there is no obvious height difference in the arrangement, so that bumps will not occur when the product reaches the lower sealing and cutting part 3 from the film pulling roller 7 depending on the size of the product itself. , can complete the delivery stably.

As an improved specific embodiment, the upper unwinding device 5 includes a placing roller 51 for placing the entire roll of film, a needle eye wheel 52 for performing needle eyeing on the film, a driving roller 53 for winding the film, and a main The driving roller 54, the placing roller 51, the pinhole wheel 52, the main driving roller 54 and the driving roller 53 are arranged in order for winding the film in turn, and the main driving roller 54 is connected to the first driving mechanism 55 for providing the main power to pull the placement roller 51 and the pinhole. For the film at the wheel 52, the drive roller 53 is swingably arranged on the arrangement frame 1. When the drive roller 53 is pulled by the film and rotated by a certain angle, the third sensor 56 is triggered, and the feedback signal of the third sensor 56 causes the first drive mechanism 55 to start the transmission. membrane.

As shown in Figures 5 and 8, when the product is transported to the lower sealing and cutting member 3, the product will push the upper and lower films to travel together, and then the pulled film will drive the drive roller 53 at the upper unwinding device 5 to swing, and when it reaches a certain angle, it will be moved by the first film. The three sensors 56 sense, and then trigger the third sensor 56 to feed back a signal to the first driving mechanism 55. The activated first driving mechanism 55 actively feeds the film, and the film at the pre-positioning roller 51 and the needle eye wheel 52 is transported backward for a period of time and then stopped. Work, and continue to convey for a period when the next trigger is triggered; the sent film lengthens the film at the transmission roller 53, and the transmission roller 53 passes through the existing reset structure such as an elastic member or a self-repeating position. The placing rollers 51 are set as two matched ones, and the whole roll of film is placed in the middle, and the film is discharged when the whole roll of film is rolled. When the product of the present invention pushes the film forward, it only needs to pull the film at the driving roller 53 to advance, which reduces the force required for the product to push the film, so that the lighter product can also be applied to the film sleeve machine to complete the film pushing work, or It is said that thicker and heavier films can be driven for packaging to meet the different packaging needs of manufacturers; after the first drive mechanism 55 is activated, the film at the placement roller 51 and the needle-eye wheel 52 is pulled out of the film. The stability is also high, ensuring that the needle eye is neatly hit on the membrane. In the case of this embodiment, the overall implementation effect is better when combined with the active film-drawing of the film-drawing roller 7 .

As an improved specific embodiment, the arrangement frame 1 is provided with an auxiliary driving roller 541 tangentially matched with the main driving roller 54, the auxiliary driving roller 541 is driven to rotate by the main driving roller 54, and the film is driven from the main driving roller 54 and the auxiliary driving roller 54. The rollers 541 pass through for transmission.

As shown in FIG. 8 , in a specific implementation, the film can be positioned by being sandwiched by the main driving roller 54 and the auxiliary driving roller 541, and the film can be pulled out during rotation; the first driving mechanism 55 can be realized by a motor, which is realized by gear The structure of the rack drives the main driving roller 54, which is turned on by the control mechanism 15 according to the feedback signal of the third sensor 56, and stops after a rated time, thereby feeding a film of a rated length. The main driving roller 54 is used as the main output power roller. When there is no auxiliary driving roller 541, the film positioning and film driving can also be realized by the winding of the film and other rollers; the addition of the auxiliary driving roller 541 further improves the performance of the film. The stable effect of clamping positioning and fixed delivery. The secondary drive roller 541 may be provided in a debuggable configuration that can be manipulated away from the primary drive roller 54 to create a space for initially passing through the film and then repositioning and clamping the film.

As an improved specific embodiment, the two ends of the transmission roller 53 are respectively swingably arranged on the arrangement frame 1 through a swing rod 531, the swing rod 531 swings around a third rotation shaft 532, and an induction sensor is arranged on the third rotation shaft 532. Block 533, the side of the sensing block 533 is provided with a third sensor 56, and the sensing block 533 has a protrusion or groove 534 for being sensed by the third sensor 56, when the sensing block 533 turns to the protrusion or groove 534 corresponding to the first When three sensors 56 are triggered, the feedback signal of the third sensor 56 is triggered.

As shown in FIG. 8, depending on the sensing block 533 arranged on the third rotating shaft 532, it can be paired with the correspondingly arranged third sensor 56, and its arrangement on the side will not affect the normal film running; the third sensor 56 may preferably be Proximity switch, or other types of sensors in the prior art that can sense the arrival of objects or changes in distance; the third sensor 56 feedbacks a signal when sensing the corresponding protrusion or groove 534, wherein the driving roller 53 is pulled and rotated by the film A certain angle can be set according to the length requirement of the film running in the prior art and the length of the pendulum rod 531 , and the angle is not specifically limited. In the specific implementation, the drive roller 53 can also cooperate with other fixed rollers to wind the film, so that the film can better travel along the swing direction of the drive roller 53, so as to drive the drive roller 53 to swing when the film is pulled.

As an improved specific embodiment, the needle eye wheels 52 are arranged in several groups and are arranged on a first rotating shaft 521 in sequence. The arrangement frame 1 is also provided with a second rotating shaft 522, and a plurality of matching wheels are arranged on the second rotating shaft 522. 523, the matching wheel 523 is arranged in one-to-one correspondence with the eye wheel 52 and tangentially matched, the matching wheel 523 is provided with an annular groove to avoid the needle on the eye wheel 52, and the film passes between the eye wheel 52 and the matching wheel 523 for transmission and transportation.

As shown in FIG. 8 , the first rotating shaft 521 and the second rotating shaft 522 are arranged in parallel, and several pinhole wheels 52 are evenly arranged in the axial direction of the first rotating shaft 521 , and a matching wheel 523 is correspondingly arranged on the second rotating shaft 522 , and the two are matched with each other. Hold the film, when the film is pulled, the eye wheel 52 and the matching wheel 523 rotate synchronously, and the needle on the eye wheel 52 is punched with air holes on the film; the annular groove is used to give way to the needle, and depends on the entities on both sides and the eye wheel The side of the 52 presses against the membrane, so that the needle stably pierces the membrane as it rotates.

As an improved specific embodiment, a plurality of lower guide shafts 61 for winding the lower film are arranged in the height direction between the lower unwinding device 6 and the film pulling roller 7; the lower guide shafts 61 are rotatably arranged on a fixed frame 62 , the fixing frame 62 is installed on the arrangement frame 1 through fasteners.

As shown in FIG. 7 , in order to avoid the fluttering of the lower film, the lower guide shaft 61 is specifically arranged to wind the film to avoid the fluttering of the long-distance middle film, and because the lower part does not have to adapt to the height of the product, the lower guide shaft 61 is specifically fixed. The frame 62 is installed with fasteners, and there is no need to perform frequent height adjustments to control costs; when the user needs to adjust the height, it can be further implemented by setting installation holes in multiple positions to match the fasteners to remove Install the fixing frame 62 to different heights to meet specific usage needs.

As an improved specific embodiment, the lower guide shafts 61 are two corresponding to the projected positions in the height direction.

As shown in FIG. 7 , at least two lower guide shafts 61 are used, which can well realize the winding arrangement of the film. Bypassing and then bypassing the upper lower guide shaft 61 from the other side, reaching the film pulling roller 7 and bypassing, it plays the role of orderly conveying the film; and the projection positions of the two lower guide shafts 61 in the height direction correspond to each other, The membranes are made to bypass in an orderly manner without creating excessive resistance when bypassing the two lower guide shafts 61 .

The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, 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 (10)

1. A film covering machine, comprising an arrangement frame (1), an upper sealing and cutting piece (2) that can be moved up and down on the upper part of the arrangement frame (1), and a lower sealing and cutting piece (3) that is fixedly arranged at the lower part of the arrangement frame (1). , a feeding mechanism (4) arranged on both sides of the lower sealing and cutting member (3), and an upper and lower unwinding device (5) and a lower unwinding device (6) respectively arranged above and below the feeding mechanism (4). (1) The upper part is provided with a first cylinder (20) for driving the upper sealing and cutting member (2) to move, and it is characterized in that it also includes a control mechanism (15) and a movable frame (16), and the movable frame (16) can be moved up and down. The movable frame is arranged on the arrangement frame (1), the control mechanism (15) is used to send a signal to adjust the height of the movable frame (16), and the movable frame (16) is provided with a first sensor (17), so The first sensor (17) is used for detecting that when the upper sealing and cutting member (2) reaches its corresponding position, the feedback signal causes the first air cylinder (20) to stop, thereby defining the stop position of the upper sealing and cutting member (2). 2. A film sleeve machine according to claim 1, characterized in that: it further comprises a pressing mechanism (18), and the pressing mechanism (18) is located on the discharge side of the upper sealing and cutting member (2) and is provided with The upper and lower positions are adjusted on the movable frame (16) along with the movable frame (16), and the pressing mechanism (18) includes a second air cylinder (181) and a second air cylinder (181) that is driven to move up and down during sealing and cutting. Product platen (182). 3. A film sleeve machine according to claim 1, characterized in that: it further comprises a film winding mechanism (19), and the film winding mechanism (19) is located on the feeding side of the upper sealing and cutting member (2) and is provided with The upper and lower positions are adjusted with the movable frame (16) on the movable frame (16), and the film winding mechanism (19) includes a plurality of rollers (191) arranged along the height direction for winding the upper film. 4. A film sleeve machine according to claim 3, characterized in that: the roller shafts (191) are two corresponding to the projected positions in the height direction, and the distance between the two roller shafts (191) is greater than The diameter of the roller shaft (191). 5. A film sleeve machine according to any one of claims 1-4, characterized in that: a film pulling roller ( 7), the film pulling roller (7) is driven by power to rotate, and the film at the lower unwinding device (6) is bypassed from the feeding mechanism (4) on the feeding side and the film pulling roller (7) to the lower sealing and cutting. At the part (3), the film-drawing roller (7) is used to drive the product reaching the film-drawing roller (7) to travel together with the pressed film. 6 . The film sleeve machine according to claim 5 , wherein the film pulling roller ( 7 ) and the feeding mechanism ( 4 ) on the feeding side are driven by a common driving mechanism. 7 . 7. A film sleeve machine according to claim 6, characterized in that: the feeding mechanism (4) on the feeding side comprises a conveyor belt (41) and a plurality of roller shafts (42) for winding the conveyor belt (41) ), a number of roller shafts (42) are driven by the motor to rotate, and a roller shaft (42) close to the film pulling roller (7) is matched with the film pulling roller (7) to set a gear set (8) on the side. The gear set (8) Drive the roller shaft (42) and the film pulling roller (7) in linkage. 8. A film sleeve machine according to any one of claims 1-4, characterized in that: the upper unwinding device (5) comprises a placing roller (51) for placing the entire film, A needle eye wheel (52) for the film to be needled, a drive roller (53) for winding the film, and a main drive roller (54), the placement roller (51), the needle eye wheel (52), the main drive roller (54) ), the drive rollers (53) are arranged in sequence for winding the film in sequence, and the main drive rollers (54) are connected to the first drive mechanism (55) to provide the main power to pull the placement roller (51) and the pinhole wheel (52). the film, the drive roller (53) is swingably arranged on the arrangement frame (1), when the drive roller (53) is pulled by the film to rotate at a certain angle, the third sensor (56) is triggered, and the third sensor (56) feedback signal The first drive mechanism (55) is activated to feed the film. 9 . The film sleeve machine according to claim 8 , characterized in that: the arrangement frame ( 1 ) is provided with an auxiliary driving roller ( 541 ) which is tangentially matched with the main driving roller ( 54 ), and the auxiliary driving roller ( 541 ) The driving roller (541) is driven to rotate by the main driving roller (54), and the film passes between the main driving roller (54) and the auxiliary driving roller (541) for transmission and conveying. 10 . The film sleeve machine according to claim 8 , wherein the two ends of the transmission roller ( 53 ) are respectively swingably arranged on the arrangement frame ( 1 ) through a swing rod ( 531 ), and the swing The rod (531) swings around a third rotating shaft (532), a sensing block (533) is arranged on the third rotating shaft (532), and a third sensor (56) is arranged on the side of the sensing block (533), and senses the The block (533) is provided with a protrusion or groove (534) for being sensed by the third sensor (56). When the sensing block (533) turns to the protrusion or groove (534) corresponding to the third sensor (56), the third sensor (56) is triggered Three sensors (56) feedback signals.

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