Up-down cutting end seal of continuous connecting rod mechanism

Abstract

The utility model discloses an up-and-down cutting end seal of a continuous connecting rod mechanism. The up-and-down cutting end seal comprises a rack, an upper sealing seat and a lower sealing seat are arranged in the rack in a sliding manner; a double-output-shaft speed reducer is installed on the lower portion of the machine frame. The input end of the double-output-shaft speed reducer is connected with a servo motor, and two output shafts of the output end of the double-output-shaft speed reducer are each connected with a crank rocker mechanism. The two sides of the rack are each provided with a connecting rod mechanism, one end of each connecting rod mechanism is rotationally connected with the upper sealing base, and the other end of each connecting rod mechanism is rotationally connected with the lower sealing base. The crank rocker mechanism is driven by the servo motor and the speed reducer and then acts on the lower sealing base, the lower sealing base drives the upper sealing base to move through the connecting rod mechanisms at the two ends, the upper sealing base and the lower sealing base are made to do reciprocating opening and closing movement in the rack, and then a packaging bag is sealed; the sealing device is simple and easy to assemble and adjust, good in sealing effect and not prone to abrasion, the service life of equipment is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, and more specifically, it particularly relates to an up-and-down cutting and end-sealing of a continuous connecting rod mechanism. Background Art

[0002] A packaging machine is a type of machine that packages products, playing the roles of protection and aesthetics. The end-sealing mechanism is an important part of the packaging machine, and its function is to heat and press the packaging film to achieve the sealing of the packaging bag.

[0003] Common end-sealing mechanisms mainly adopt a rotating structure to achieve the reciprocating rotational separation and combination between two knife seats. The two knife seats press and cut the packaging bag. This kind of structure is often relatively complex, with high adjustment requirements during assembly. The two knife seats collide hard during the cutting process, which easily causes wear of the cutting knife, resulting in frequent maintenance of the equipment, short service life, and after long-term use, the sealing strength at the product sealing part is not high. In addition, the traditional end-sealing mechanism also has problems of large volume and heavy weight, making it difficult to adapt to the packaging requirements of miniaturized machines. Content of the Utility Model

[0004] The utility model provides an up-and-down cutting and end-sealing of a continuous connecting rod mechanism to solve the problems raised in the above background art. To achieve the above purpose, the utility model provides the following technical solutions: An up-and-down cutting and end-sealing of a continuous connecting rod mechanism, including a frame;

[0005] A upper sealing seat and a lower sealing seat are slidably arranged in the frame. The upper sealing seat and the lower sealing seat are arranged oppositely. The upper sealing seat is provided with a cutting mechanism, and the lower sealing seat is provided with a cutting groove that cooperates with the cutting mechanism;

[0006] A double-output shaft speed reducer is installed at the lower part of the frame; the input end of the double-output shaft speed reducer is connected with a servo motor, and each of the two output shafts at the output end is connected with a crank-rocker mechanism; the crank-rocker mechanism is rotatably connected to the bottom of the lower sealing seat;

[0007] A connecting rod mechanism is arranged on each side of the frame. One end of the connecting rod mechanism is rotatably connected to the upper sealing seat, and the other end is rotatably connected to the lower sealing seat.

[0008] Preferably, the cross-section of the frame is in a rectangular structure, surrounded by a top plate, a bottom plate and two side plates. A pair of slide rod seats are arranged on the inner side wall of the side plate. A linear optical axis is arranged between the pair of slide rod seats. An upper slider and a lower slider are slidably arranged on the linear optical axis. The upper slider is connected to one end of the upper sealing seat, and the lower slider is connected to one end of the lower sealing seat.

[0009] Preferably, the linkage mechanism is arranged on the outer side surface of the side plate; the linkage mechanism includes a rotating seat, a central shaft, a swing arm, an upper connecting rod, an upper connecting shaft, a lower connecting rod and a lower connecting shaft; an installation groove for cooperating with the rotating seat, an upper sliding groove for cooperating with the upper connecting shaft and a lower sliding groove for cooperating with the lower connecting shaft are arranged on the side plate; the rotating seat is installed in the installation groove, the central shaft is installed in the rotating seat through a bearing, and the swing arm is fixedly connected with the central shaft; both ends of the swing arm are rotatably connected with the upper connecting rod and the lower connecting rod respectively; the upper connecting rod is rotatably connected with one end of the upper connecting shaft; the upper connecting shaft passes through the upper sliding groove, and the other end thereof is connected with the upper sealing seat; the lower connecting rod is rotatably connected with one end of the lower connecting shaft; the lower connecting shaft passes through the lower sliding groove, and the other end thereof is connected with the lower sliding block.

[0010] Preferably, the upper sliding block includes an upper shaft sleeve, an upper clamping block and a lower clamping block. The upper clamping block, the upper sealing seat, the lower clamping block and the upper shaft sleeve are sequentially sleeved on the linear optical axis; the upper shaft sleeve is slidably connected with the linear optical axis, the upper clamping block and the lower clamping block clamp the end of the upper sealing seat and are connected to the upper shaft sleeve through bolts; the lower sliding block includes a lower shaft sleeve and a connecting block. The lower shaft sleeve, the connecting block and the lower sealing seat are sequentially sleeved on the linear optical axis; the lower shaft sleeve is slidably connected with the linear optical axis, the connecting block is connected with the lower shaft sleeve through bolts, and the end of the lower sealing seat is connected with the connecting block through bolts; the connecting block is connected with the lower connecting shaft.

[0011] Preferably, the crank-rocker mechanism includes a turntable, a rotating shaft and a rocker. An L-shaped seat for cooperating with the remote sensing is arranged at the bottom of the lower sealing seat; the turntable is fixedly connected with the output shaft of the double-output shaft reducer, the rotating shaft is fixedly arranged on the turntable, one end of the remote sensing is rotatably connected with the rotating shaft, and the other end is rotatably connected with the L-shaped seat.

[0012] Preferably, a proximity switch is arranged at the lower part of the frame, and the proximity switch faces the adjacent rotating shaft.

[0013] Preferably, the upper sealing seat includes an upper cross plate and an upper sealing knife. The cutting mechanism includes a cylinder and a cutting knife. The upper sealing knife is arranged at the bottom of the upper cross plate. The cylinder is arranged at the top of the upper cross plate, and its piston rod is connected with the cutting knife. The cutting knife extends out of the upper sealing knife; the lower sealing seat includes a lower cross plate, a bracket and a lower sealing knife. The lower cross plate is connected with the bracket, the lower sealing knife is arranged on the bracket, the lower sealing knife is arranged opposite to the upper cutting knife, and the cutting groove is arranged on the lower sealing knife.

[0014] Preferably, the upper sealing knife is telescopically connected to the upper cross plate through a pair of elastic connecting members; the pair of elastic connecting members are respectively arranged at both ends of the upper sealing knife; the elastic connecting member includes a bearing sleeve, a sliding shaft and a spring, the bearing sleeve is fixedly arranged on the upper cross plate, the sliding shaft is slidably arranged in the bearing sleeve, a limit cap is arranged at the upper end of the sliding shaft, the lower end is connected to the upper sealing knife, and the spring is sleeved on the sliding shaft, one end of which abuts against the upper cross plate and the other end abuts against the upper sealing knife.

[0015] Preferably, a first distance sensor is arranged at the upper part of the frame, and a second distance sensor is arranged at the lower part. The detection end of the first distance sensor faces the upper sealing seat, and the detection end of the second distance sensor faces the lower sealing seat.

[0016] Preferably, a reminder module is further included. The reminder module is respectively connected to the first distance sensor and the second distance sensor, and the reminder module is used to give an external reminder.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model drives the crank-rocker mechanism through a servo motor and a speed reducer, and then acts on the lower sealing seat. The lower sealing seat drives the upper sealing seat to move through the link mechanisms at both ends, so that the upper sealing seat and the lower sealing seat reciprocally open and close in the frame, and then seal the packaging bag; the assembly and adjustment of the present utility model are simple and easy to implement, the sealing effect is good, and the upper sealing seat and the lower sealing seat are not easily worn, improving the service life of the equipment and reducing the production cost. In addition, by optimizing the sliding structures of the upper sealing seat and the lower sealing seat and arranging them in the frame, the weight and volume of the whole machine are effectively controlled, and the structure is more compact; the link mechanism is arranged outside the frame, which is convenient for maintaining the link mechanism. Description of the Drawings

[0018] Figure 1 is a structural diagram of the continuous link mechanism for upper and lower cutting and end sealing of the embodiment of the present utility model;

[0019] Figure 2 is a rear structural diagram of the continuous link mechanism for upper and lower cutting and end sealing of the embodiment of the present utility model;

[0020] Figure 3 is a front view of the continuous link mechanism for upper and lower cutting and end sealing of the embodiment of the present utility model;

[0021] Figure 4 is a side view of the continuous link mechanism for upper and lower cutting and end sealing of the embodiment of the present utility model;

[0022] In Figures 1 to 4 the corresponding relationship between the names of each component and the reference numerals in the drawings is as follows:

[0023] 1 - Frame, 101 - Top plate, 102 - Bottom plate, 103 - Side plate, 1031 - Upper chute, 1032 - Lower chute, 2 - Upper sealing seat, 201 - Upper cross plate, 202 - Upper sealing knife, 203 - Cylinder, 204 - Cutting knife, 205 - Elastic connecting piece, 2051 - Bearing sleeve, 2052 - Sliding shaft, 2053 - Spring, 3 - Lower sealing seat, 301 - Lower cross plate, 302 - Bracket, 303 - Lower sealing knife, 4 - Double output shaft reducer, 5 - Servo motor, 6 - Crank rocker mechanism, 601 - Turntable, 602 - Rotating shaft, 603 - Rocker, 7 - Link mechanism, 701 - Rotating seat, 702 - Central shaft, 703 - Swing arm, 704 - Upper connecting rod, 705 - Upper connecting shaft, 706 - Lower connecting rod, 707 - Lower connecting shaft, 8 - Slide bar seat, 9 - Linear optical axis, 10 - Upper slider, 1001 - Upper shaft sleeve, 1002 - Upper clamping block, 1003 - Lower clamping block, 11 - Lower slider, 1101 - Lower shaft sleeve, 1102 - Connecting block, 12 - Proximity switch. Detailed implementation manners

[0024] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The attached drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present disclosure. The following embodiments are used to illustrate the present utility model but cannot be used to limit the scope of the present utility model.

[0025] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 4The utility model provides a continuous link mechanism with upper and lower cutting end seals, comprising a frame 1;

[0028] An upper sealing seat 2 and a lower sealing seat 3 are slidably disposed in the frame 1, the upper sealing seat 2 is arranged opposite to the lower sealing seat 3, the upper sealing seat 2 is provided with a cutting mechanism, and the lower sealing seat 3 is provided with a cutting groove matched with the cutting mechanism;

[0029] A dual-output shaft reducer 4 is installed at the lower part of the frame 1; a servo motor 5 is connected to the input end of the dual-output shaft reducer 4, and a crank rocker mechanism 6 is connected to each of the two output shafts at the output end; the crank rocker mechanism 6 is rotatably connected to the bottom of the lower sealing seat 3;

[0030] A connecting rod mechanism 7 is respectively provided on both sides of the frame 1 , one end of the connecting rod mechanism 7 is rotatably connected to the upper sealing seat 2 , and the other end is rotatably connected to the lower sealing seat 3 .

[0031] In the embodiment of the utility model, the upper sealing seat 2 and the lower sealing seat 3 are arranged opposite to each other, and both can slide in the frame 1; in order to make the two sealing seats press each other to seal the packaging bag, and then separate from each other to make the packaging bag detach from the end sealing mechanism, this embodiment is provided with a double output shaft reducer 4, which acts on the lower sealing seat 3 through two crank rocker mechanisms 6, so that the lower sealing seat 3 can be raised and lowered in the frame 1, and at the same time, by setting a connecting rod mechanism 7 on both sides of the frame 1, the upper sealing seat 2 and the lower sealing seat 3 are connected by the connecting rod mechanism 7, so that the two can realize opposite or reverse movement. Through the above structural design, the servo motor 5 does not need to be reversed and can run for a long time, which improves the reliability of the equipment.

[0032] The working process of this embodiment is as follows: the servo motor 5 starts and drives the dual-output shaft reducer 4 to operate, the crank rocker mechanisms 6 on both sides of the dual-output shaft reducer 4 act on the lower sealing seat 3 at the same time, the lower sealing seat 3 transmits power to the upper sealing seat 2 through the connecting rod mechanism 7, the upper sealing seat 2 and the lower sealing seat 3 approach each other and seal and cut the packaging bag, and after the end sealing work is completed, the upper sealing seat 2 and the lower sealing seat 3 are separated from each other to complete the end sealing operation of the packaging bag.

[0033] Preferably, the cross-section of the frame 1 is a rectangular structure, which is surrounded by a top plate 101, a bottom plate 102 and two side plates 103. A pair of slide rod seats 8 are provided on the inner side walls of the side plates 103, and a linear optical axis 9 is provided between the pair of slide rod seats 8. An upper slider 10 and a lower slider 11 are slidably provided on the linear optical axis 9. The upper slider 10 is connected to one end of the upper sealing seat 2, and the lower slider 11 is connected to one end of the lower sealing seat 3.

[0034] Through the above structural design, a pair of slide rod seats 8 are installed on the inner side of the side plate 103, and then a linear optical axis 9 is installed between the two slide rod seats 8 on the same side. By arranging an upper slider 10 and a lower slider 11 on the linear optical axis 9, and docking the upper slider 10 with the upper sealing seat 2 and the lower slider 11 with the lower sealing seat 3, the upper sealing seat 2 and the lower sealing seat 3 can move up and down along the linear optical axis 9.

[0035] In this embodiment, the length of the linear optical axis 9 can be adjusted according to the size of the packaging machine and the moving range of the sealing seat, avoiding the structure of using a whole shaft or guide rail as long as the body frame in the previous end-sealing equipment to achieve sliding connection. This not only saves the material cost of the linear optical axis 9, but also makes the end-sealing more compact, effectively reducing the volume and weight to adapt to the installation requirements of the miniaturized packaging machine.

[0036] Preferably, the link mechanism 7 is arranged on the outer side surface of the side plate 103; the link mechanism 7 includes a rotating seat 701, a central shaft 702, a swing arm 703, an upper link 704, an upper connecting shaft 705, a lower link 706 and a lower connecting shaft 707; the side plate 103 is provided with a mounting groove for cooperating with the rotating seat 701, an upper sliding groove 1031 for cooperating with the upper connecting shaft 705 and a lower sliding groove 1032 for cooperating with the lower connecting shaft 707; the rotating seat 701 is installed in the mounting groove, the central shaft 702 is installed in the rotating seat 701 through a bearing, and the swing arm 703 is fixedly connected with the central shaft 702; both ends of the swing arm 703 are rotatably connected with the upper link 704 and the lower link 706 respectively; the upper link 704 is rotatably connected with one end of the upper connecting shaft 705; the upper connecting shaft 705 passes through the upper sliding groove 1031, and its other end is connected with the upper sealing seat 2; the lower link 706 is rotatably connected with one end of the lower connecting shaft 707; the lower connecting shaft 707 passes through the lower sliding groove 1032, and its other end is connected with the lower slider 11.

[0037] In this embodiment, the link mechanism 7 plays a role in power transmission. The lower sealing seat 3 drives the lower connecting shaft 707 to move, and the lower connecting shaft 707 transmits the power to the lower link 706, the swing arm 703, the upper link 704 and the upper connecting shaft 705 in sequence. Finally, the upper connecting shaft 705 acts on the upper sealing seat 2, enabling the upper sealing seat 2 and the lower sealing seat 3 to move synchronously. In this embodiment, the link mechanism 7 is arranged outside the frame 1, greatly reducing the installation difficulty of the link mechanism 7, and facilitating the adjustment of the link mechanism 7 in the later stage, as well as carrying out maintenance work such as replacing damaged parts, adding lubricant, and removing impurities.

[0038] Preferably, the upper slider 10 includes an upper bushing 1001, an upper clamping block 1002 and a lower clamping block 1003. The upper clamping block 1002, the upper sealing seat 2, the lower clamping block 1003 and the upper bushing 1001 are sequentially sleeved on the linear optical axis 9. The upper bushing 1001 is slidably connected to the linear optical axis 9. The upper clamping block 1002 and the lower clamping block 1003 clamp the end of the upper sealing seat 2 and are connected to the upper bushing 1001 by bolts. The lower slider 11 includes a lower bushing 1101 and a connecting block 1102. The lower bushing 1101, the connecting block 1102 and the lower sealing seat 3 are sequentially sleeved on the linear optical axis 9. The lower bushing 1101 is slidably connected to the linear optical axis 9. The connecting block 1102 is connected to the lower bushing 1101 by bolts. The end of the lower sealing seat 3 is connected to the connecting block 1102 by bolts. The connecting block 1102 is connected to the lower connecting shaft 707.

[0039] Through the above structural design, the upper bushing 1001 and the lower bushing 1101 are respectively matched with the linear optical axis 9, making the sliding smoother. At the same time, the upper clamping block 1002, the lower clamping block 1003 and the connecting block 1102 are provided to increase the contact surface between the upper sealing seat 2, the lower sealing seat 3 and the linear optical axis 9, making the connection more stable.

[0040] Preferably, the crank-rocker mechanism 6 includes a turntable 601, a rotating shaft 602 and a rocker 603. The bottom of the lower sealing seat 3 is provided with an L-shaped seat that cooperates with the remote sensing. The turntable 601 is fixedly connected to the output shaft of the double-output shaft reducer 4. The rotating shaft 602 is fixedly arranged on the turntable 601. One end of the remote sensing is rotatably connected to the rotating shaft 602, and the other end is rotatably connected to the L-shaped seat. Through the above structural design, when the output shaft of the double-output shaft reducer 4 rotates, the turntable 601 rotates accordingly. The rotating shaft 602 is installed on the turntable 601 and performs a circular motion as the turntable 601 rotates. The rotating shaft 602 drives the rocker 603, and the rocker 603 acts on the bottom of the lower sealing seat 3, causing the lower sealing seat 3 to perform a lifting motion within the frame 1.

[0041] Preferably, a proximity switch 12 is provided at the lower part of the frame 1, and the proximity switch 12 is arranged facing the adjacent rotating shaft 602. By providing the proximity switch 12, when the rotating shaft 602 approaches the proximity switch 12, the proximity switch 12 will generate a signal, thereby identifying whether the turntable 601 is rotating and the rotation frequency, and then judging the movement frequency between the upper sealing seat 2 and the lower sealing seat 3, and the sealing process can be adjusted to control the conveying rhythm of the packaging bag and improve the sealing accuracy.

[0042] Preferably, the upper sealing seat 2 includes an upper cross plate 201 and an upper sealing knife 202, and the cutting mechanism includes a cylinder 203 and a cutting knife 204. The upper sealing knife 202 is arranged at the bottom of the upper cross plate 201, the cylinder 203 is arranged at the top of the upper cross plate 201, and its piston rod is connected to the cutting knife 204. The cutting knife 204 extends out from the upper sealing knife 202. The lower sealing seat 3 includes a lower cross plate 301, a bracket 302 and a lower sealing knife 303. The lower cross plate 301 is connected to the bracket 302, the lower sealing knife 303 is arranged on the bracket 302, the lower sealing knife 303 is arranged opposite to the upper cutting knife 204, and the cutting groove is arranged on the lower sealing knife 303. In this embodiment, when the packaging bag is pressed by the upper sealing seat 2 and the lower sealing seat 3, the cylinder 203 operates and drives the cutting knife 204 to move towards the lower sealing seat 3 through the piston rod. The cutting knife 204 extends out and inserts into the cutting groove, and at the same time, the packaging bag is cut off.

[0043] Preferably, the upper sealing knife 202 and the upper cross plate 201 are telescopically connected through a pair of elastic connecting members 205. The pair of elastic connecting members are respectively arranged at both ends of the upper sealing knife 202. The elastic connecting member 205 includes a bearing sleeve 2051, a sliding shaft 2052 and a spring 2053. The bearing sleeve 2051 is fixedly arranged on the upper cross plate 201, the sliding shaft 2052 is slidably arranged in the bearing sleeve 2051. A limit cap is arranged at the upper end of the sliding shaft 2052, and the lower end is connected to the upper sealing knife 202. The spring 2053 is sleeved on the sliding shaft 2052, one end of which abuts against the upper cross plate 201, and the other end abuts against the upper sealing knife 202. By arranging an elastic connecting member 205 at each end of the upper sealing knife 202, an elastic telescopic connection is realized between the upper sealing knife 202 and the upper cross plate 201. When the upper sealing knife 202 is pressed against the lower sealing seat 3, it can avoid damage to the packaging bag caused by excessive pressure.

[0044] Preferably, a first distance sensor is arranged at the upper part of the frame 1, and a second distance sensor is arranged at the lower part. The detection end of the first distance sensor faces the upper sealing seat 2, and the detection end of the second distance sensor faces the lower sealing seat 3. By arranging the first distance sensor to detect the movement of the upper sealing seat 2 and the second distance sensor to detect the movement of the lower sealing seat 3, precise control can be realized, so that the movement distance between the two sealing seats can be well controlled, avoiding too large a gap between the two sealing seats, resulting in insufficient pressing force of the packaging bag and inability to bond firmly, and also avoiding excessive pressing of the two sealing seats, resulting in excessive pressing force of the packaging bag and damage to the packaging bag.

[0045] Preferably, a reminder module is further included. The reminder module is respectively connected to the first distance sensor and the second distance sensor, and is used to give an external reminder. By setting the reminder module, once the positions between the upper sealing seat 2 and the lower sealing seat 3 deviate during operation, the reminder module can give an external reminder to remind the staff to maintain the equipment in time.

[0046] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model drives a crank-rocker mechanism through a servo motor and a speed reducer, and then acts on the lower sealing seat. The lower sealing seat drives the upper sealing seat to move through the link mechanisms at both ends, so that the upper sealing seat and the lower sealing seat reciprocally open and close within the frame, and then seal the packaging bag; the assembly and adjustment of the present utility model are simple and easy, the sealing effect is good, and the upper sealing seat and the lower sealing seat are not easily worn, which improves the service life of the equipment and reduces the production cost. In addition, by optimizing the sliding structure of the upper sealing seat and the lower sealing seat and arranging it within the frame, the weight and volume of the whole machine are effectively controlled, and the structure is more compact; the link mechanism is arranged outside the frame, which is convenient for maintaining the link mechanism.

[0047] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A continuous connecting rod mechanism for upper and lower cutting and end sealing, characterized in that, including a machine frame (1); a top sealing seat (2) and a bottom sealing seat (3) are slidably arranged in the machine frame, the top sealing seat and the bottom sealing seat are arranged oppositely, the top sealing seat is provided with a cutting mechanism, and the bottom sealing seat is provided with a cutting groove matched with the cutting mechanism; a double-output shaft speed reducer (4) is installed at the lower part of the machine frame; an input end of the double-output shaft speed reducer is connected with a servo motor (5), and each of two output shafts at the output end is connected with a crank rocker mechanism (6); the crank rocker mechanism is rotatably connected with the bottom of the bottom sealing seat; a connecting rod mechanism (7) is arranged on each side of the machine frame, one end of the connecting rod mechanism is rotatably connected with the top sealing seat, and the other end is rotatably connected with the bottom sealing seat.

2. The upper and lower cutting and end sealing of the continuous connecting rod mechanism according to claim 1, characterized in that the cross section of the machine frame is in a rectangular structure and is surrounded by a top plate (101), a bottom plate (102) and two side plates (103), a pair of slide rod seats (8) are arranged on the inner side wall of the side plate, a linear optical axis (9) is arranged between the pair of slide rod seats, an upper slider (10) and a lower slider (11) are slidably arranged on the linear optical axis, one end of the upper slider is connected with the top sealing seat, and one end of the lower slider is connected with the bottom sealing seat.

3. The continuous connecting rod mechanism upper and lower cutting end seal according to claim 2, characterized in that, the connecting rod mechanism is arranged on the outer side surface of the side plate; the connecting rod mechanism includes a rotating seat (701), a central shaft (702), a swing arm (703), an upper connecting rod (704), an upper connecting shaft (705), a lower connecting rod (706) and a lower connecting shaft (707); an installation groove matched with the rotating seat, an upper sliding groove (1031) matched with the upper connecting shaft and a lower sliding groove (1032) matched with the lower connecting shaft are arranged on the side plate; the rotating seat is installed in the installation groove, the central shaft is installed in the rotating seat through a bearing, and the swing arm is fixedly connected with the central shaft; two ends of the swing arm are respectively rotatably connected with the upper connecting rod and the lower connecting rod; one end of the upper connecting rod is rotatably connected with one end of the upper connecting shaft; the upper connecting shaft passes through the upper sliding groove, and the other end of the upper connecting shaft is connected with the top sealing seat; one end of the lower connecting rod is rotatably connected with one end of the lower connecting shaft; the lower connecting shaft passes through the lower sliding groove, and the other end of the lower connecting shaft is connected with the lower slider.

4. The upper and lower cutting and end sealing of the continuous connecting rod mechanism according to claim 3, characterized in that, the upper slider includes an upper shaft sleeve (1001), an upper clamping block (1002) and a lower clamping block (1003), the upper clamping block, the top sealing seat, the lower clamping block and the upper shaft sleeve are sequentially sleeved on the linear optical axis; the upper shaft sleeve is slidably connected with the linear optical axis, the upper clamping block and the lower clamping block clamp the end part of the top sealing seat and are connected in the upper shaft sleeve through bolts; the lower slider includes a lower shaft sleeve (1101) and a connecting block (1102), the lower shaft sleeve, the connecting block and the bottom sealing seat are sequentially sleeved on the linear optical axis; the lower shaft sleeve is slidably connected with the linear optical axis, the connecting block is connected with the lower shaft sleeve through bolts, and the end part of the bottom sealing seat is connected with the connecting block through bolts; the connecting block is connected with the lower connecting shaft.

5. The continuous link mechanism upper and lower cut end seal according to claim 1, characterized in that, The crank-rocker mechanism includes a turntable (601), a rotating shaft (602) and a rocker (603). An L-shaped seat matching with the remote sensor is arranged at the bottom of the lower sealing seat. The turntable is fixedly connected with the output shaft of the double-output shaft reducer. The rotating shaft is fixedly arranged on the turntable. One end of the remote sensor is rotatably connected with the rotating shaft, and the other end is rotatably connected with the L-shaped seat.

6. The continuous link mechanism upper and lower cutting end seal according to claim 5, characterized in that, A proximity switch (12) is arranged at the lower part of the frame, and the proximity switch is arranged towards the adjacent rotating shaft.

7. The upper and lower cutting and end sealing of the continuous connecting rod mechanism according to claim 1, characterized in that, The upper sealing seat includes an upper cross plate (201) and an upper sealing knife (202). The cutting mechanism includes a cylinder (203) and a cutting knife (204). The upper sealing knife is arranged at the bottom of the upper cross plate. The cylinder is arranged at the top of the upper cross plate, and its piston rod is connected with the cutting knife. The cutting knife extends out of the upper sealing knife. The lower sealing seat includes a lower cross plate (301), a bracket (302) and a lower sealing knife (303). The lower cross plate is connected with the bracket. The lower sealing knife is arranged on the bracket. The lower sealing knife is arranged opposite to the upper cutting knife. The cutting groove is arranged on the lower sealing knife.

8. The continuous connecting rod mechanism upper and lower cutting end seal according to claim 7, characterized in that, The upper sealing knife and the upper cross plate are telescopically connected through a pair of elastic connecting pieces (205). The pair of elastic connecting pieces are respectively arranged at both ends of the upper sealing knife. The elastic connecting piece includes a bearing sleeve (2051), a sliding shaft (2052) and a spring (2053). The bearing sleeve is fixedly arranged on the upper cross plate. The sliding shaft is slidably arranged in the bearing sleeve. A limit cap is arranged at the upper end of the sliding shaft, and the lower end is connected with the upper sealing knife. The spring is sleeved on the sliding shaft, one end of which abuts against the upper cross plate, and the other end abuts against the upper sealing knife.

9. The continuous link mechanism upper and lower cutting end seal according to any one of claims 1 to 8, characterized in that, A first distance sensor is arranged at the upper part of the frame, and a second distance sensor is arranged at the lower part of the frame. The detection end of the first distance sensor is arranged towards the upper sealing seat, and the detection end of the second distance sensor is arranged towards the lower sealing seat.

10. The continuous link mechanism upper and lower cutting end seal according to claim 9, characterized in that, It further includes a reminder module. The reminder module is respectively connected with the first distance sensor and the second distance sensor, and the reminder module is used for sending out a reminder externally.

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