CN217893410U

CN217893410U - Reciprocating type double-cam end sealing mechanism

Info

Publication number: CN217893410U
Application number: CN202220000049.7U
Authority: CN
Inventors: 周文清; 张胜根; 刘镇樑
Original assignee: Foshan Suk Precision Machinery Co ltd
Current assignee: Foshan Suk Precision Machinery Co ltd
Priority date: 2022-01-01
Filing date: 2022-01-01
Publication date: 2022-11-25
Anticipated expiration: 2032-01-01

Abstract

The utility model discloses a reciprocating double-cam end sealing mechanism, which comprises a frame, wherein a slide block component and a driving component are arranged on the frame; the sliding block assembly comprises a sliding frame, an upper cutter sealing die and a lower cutter sealing die, and the driving assembly comprises a driving unit, a transmission unit and a cam connecting rod; the driving unit drives the transmission unit, the two cam assemblies in the transmission unit drive the cam connecting rods to realize the movement of the lower sealing cutter die, and meanwhile, the transmission unit drives the sliding frame to do lifting movement, so that the upper sealing cutter die on the sliding frame moves together, the driving mechanism drives the upper sealing cutter die and the lower sealing cutter die to reciprocate through the transmission unit, and the sealing function of the packaging bag is realized. The utility model discloses a design of two sets of cam subassemblies has increased the cam connecting rod for seal the both sides atress balance of cutting die down, the wrapping bag seal more firmly, played the transmission steadily, balanced atress and reduced high-speed operation shake effect.

Description

Reciprocating type double-cam end sealing mechanism

Technical Field

The utility model relates to the technical field of packaging machinery, more specifically say, in particular to reciprocating type double cam end seals mechanism.

Background

The packaging machine is a machine for packaging products by using packaging bags, and plays a role in protection and beauty. In the packaging machine, an end sealing mechanism is an important part on the packaging machine, when the packaging machine works, a packaging film is turned into a bag through a bag forming mechanism, then materials are filled, the packaging bag moves to a longitudinal sealing device for lateral sealing, then the packaging bag moves to the end sealing mechanism, and the end sealing mechanism carries out sealing and cutting operations on the end part of the packaging bag, so that the packaging bag is sealed. At current end seal mechanism, adopt the motor to realize two reciprocal sealings between the blade holder through gear, cam and connecting rod driven mode, but common end seal mechanism mostly only has a cam to drive the connecting rod, and the atress is inhomogeneous when leading to sealing at a high speed, leads to sealing of wrapping bag firm inadequately, in addition, because the atress is uneven, whole end seal mechanism can appear the problem of shake when sealing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reciprocating type double cam end seals mechanism to solve the problem that proposes among the above-mentioned background art. In order to achieve the above object, the utility model provides a following technical scheme: a reciprocating double-cam end sealing mechanism comprises a rack, wherein a sliding block assembly and a driving assembly are arranged on the rack; the sliding block assembly comprises a sliding frame, an upper cutting sealing die and a lower cutting sealing die, the upper cutting sealing die is arranged at the top end of the sliding frame, and the lower cutting sealing die is slidably arranged on the sliding frame; the driving assembly comprises a driving unit, a transmission unit and a cam connecting rod; the driving unit is in transmission connection with the transmission unit; two cam assemblies are arranged in the transmission unit and are arranged oppositely; the cam connecting rod comprises two side plates, and a cam shaft, a reinforcing plate and a push rod are respectively arranged between the two side plates; the camshaft is arranged between the two cam assemblies; the two cam assemblies are connected with the cam shaft and can drive the cam shaft to reciprocate; two ends of the push rod are respectively and rotatably connected with a rotating block, and the rotating blocks are connected with the lower knife sealing die; the transmission unit is connected with the sliding frame and can drive the sliding frame to do reciprocating lifting motion.

Preferably, the transmission unit further comprises two gear transmission parts, a connecting frame and a connecting shaft, wherein the two gear transmission parts are symmetrically arranged and connected through the connecting frame, and are in transmission connection through the connecting shaft; the two cam assemblies are arranged on the connecting frame; the driving unit comprises a speed reducer and a servo motor, the speed reducer is mounted on one cam assembly, the servo motor is connected with the speed reducer, and an output shaft of the speed reducer is in transmission connection with the connecting shaft; the gear transmission part comprises a support plate, a first gear, a second gear and a third gear, wherein the first gear, the second gear and the third gear are in meshing transmission connection and can be rotatably arranged on the outer side surface of the support plate; the first gear is connected with the connecting shaft, and a first convex shaft is arranged on the outer side surface of the first gear; the second gear is connected with the adjacent cam assembly; and a second convex shaft is arranged on the outer side surface of the third gear.

Preferably, the cam assembly comprises a first cam plate, a second cam plate and a bearing seat; the first cam plate is connected with the connecting frame; the first cam plate is connected with the adjacent supporting plate through the bearing seat, the second cam plate is provided with a cam transmission shaft, and the cam transmission shaft is arranged on the bearing seat and connected with the second gear; the second cam plate is provided with a through strip-shaped sliding groove, and the cam shaft is sleeved with a first bearing and is in sliding connection with the strip-shaped sliding groove through the first bearing.

Preferably, the second cam plate is of an arcuate configuration.

Preferably, a limiting groove is formed in the first cam plate, and a second bearing is sleeved at the end of the cam shaft and is in sliding connection with the limiting groove through the second bearing.

Preferably, the upper part of the limiting groove is of a horizontal linear structure, and the lower part of the limiting groove is of an arc structure.

Preferably, the sliding frame comprises two sliding units which are symmetrically arranged, and the two sliding units are mutually matched with the two gear transmission parts; the sliding unit comprises a first connecting plate, a linear optical axis and a second connecting plate; the linear optical axis is arranged on the first connecting plate, and two ends of the second connecting plate are respectively connected with the first convex shaft and the second convex shaft; and the second connecting plate is provided with a pair of clamping seats, and the clamping seats are connected with the linear optical axis.

Preferably, the upper sealing cutter die comprises a buffering unit and an upper sealing cutter unit, the buffering unit is fixedly connected with the top of the linear optical axis, the upper sealing cutter unit is connected with the linear optical axis in a sliding manner, the buffering unit is connected with the upper sealing cutter unit, and the buffering unit is used for buffering the upper sealing cutter unit when the upper sealing cutter unit ascends.

Preferably, the reinforcing plate is provided with a weight reduction groove, and the end part of the weight reduction groove is connected with the side plate through a bolt; bolt holes are respectively formed in two sides of the top of the side plate, and screws are arranged in the bolt holes to clamp the push rod.

Preferably, the bottom of curb plate has a joint piece through bolted connection, the bottom of curb plate is equipped with semicircular structure's first recess, be equipped with on the joint piece with first recess complex second recess, first recess with the second recess presss from both sides tightly jointly the camshaft.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a drive unit drives transmission unit, and two cam subassemblies among the transmission unit drive the camshaft for cam connecting rod drives down a cutting die motion, and drive unit drives the carriage simultaneously and is elevating movement, makes the same motion of last cutting die that seals on the carriage, has realized that actuating mechanism drives through transmission unit and seals cutting die and seal cutting die down and carry out reciprocating motion, realizes the function of sealing of wrapping bag. The utility model discloses a design of two sets of cam subassemblies has increased the cam connecting rod for seal the both sides atress balance of cutting die down, the wrapping bag seal more firmly, played the transmission steadily, balanced atress and reduced high-speed operation shake effect.

Drawings

FIG. 1 is a block diagram of a reciprocating dual cam end seal mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a driving assembly of the reciprocating double cam end seal mechanism according to an embodiment of the present invention;

FIG. 3 is a side view of a reciprocating dual cam end seal mechanism according to an embodiment of the present invention;

FIG. 4 is a side cross-sectional view of a reciprocating dual cam end seal mechanism in accordance with an embodiment of the present invention;

in fig. 1 to 4, the corresponding relationship between the names of the components and the reference numbers is as follows:

1-a frame, 2-a slide block assembly, 21-a sliding frame, 211-a first connecting plate, 212-a linear optical axis, 213-a second connecting plate, 22-an upper knife sealing die, 23-a lower knife sealing die, 3-a driving assembly, 31-a driving unit, 311-a reducer, 312-a servo motor, 32-a transmission unit, 321-a cam assembly, 3211-a first cam plate, 32111-a limiting groove, 3212-a second cam plate, 3213-a bearing seat, 322-a gear transmission part, 3221-a supporting plate, 3222-a first gear, 3223-a second gear, 3224-a third gear, 3225-a first convex shaft, 3226-a second convex shaft, 323-a connecting frame, 324-a connecting shaft, 33-a cam connecting rod, 331-a side plate, 332-a cam shaft, 333-a reinforcing plate, 334-a push rod, 335-a rotating block, 336-a clamping block.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the present invention provides a reciprocating dual-cam end sealing mechanism, which includes a frame 1, wherein the frame 1 is provided with a sliding block assembly 2 and a driving assembly 3; the sliding block assembly 2 comprises a sliding frame 21, an upper knife sealing die 22 and a lower knife sealing die 23, the upper knife sealing die 22 is arranged at the top end of the sliding frame 21, and the lower knife sealing die 23 is arranged on the sliding frame 21 in a sliding manner; the driving component 3 comprises a driving unit 31, a transmission unit 32 and a cam connecting rod 33; the driving unit 31 is in transmission connection with the transmission unit 32; two cam assemblies 321 are arranged in the transmission unit 32, and the two cam assemblies 321 are arranged oppositely; the cam connecting rod 33 comprises two side plates 331, and a cam shaft 332, a reinforcing plate 333 and a push rod 334 are respectively arranged between the two side plates 331; the cam shaft 332 is arranged between the two cam assemblies 321; the two cam assemblies 321 are connected with the cam shaft 332 and can drive the cam shaft 332 to reciprocate; two ends of the push rod 334 are respectively rotatably connected with a rotating block 335, and the rotating block 335 is connected with the lower sealing cutter die 23; the transmission unit 32 is connected to the sliding frame 21 and can drive the sliding frame 21 to reciprocate up and down.

In the embodiment of the present invention, when the driving unit 31 is started to transmit power to the transmission unit 32, the two cam assemblies 321 drive the cam link 33 to move through a series of transmissions inside the transmission unit 32; the transmission unit 32 is connected with the sliding frame 21 and drives the sliding frame 21 to move up and down, so that the driving unit 31 can simultaneously drive the cam link 33 and the sliding frame 21 to move when working, and because the cam link 33 is connected with the lower cutting sealing die 23 and the sliding frame 21 is connected with the upper cutting sealing die 22, the upper cutting sealing die 22 and the lower cutting sealing die 23 move simultaneously when the cam link 33 and the sliding frame 21 move. In the moving process, the cam link 33 reciprocates under the action of the two cam assemblies 321, the sliding frame 21 reciprocates under the action of the transmission unit 32, and the upper sealing cutter die 22 and the lower sealing cutter die 23 reciprocate along with the reciprocating motion, so that the function of continuously sealing the packaging bags is realized.

Preferably, the transmission unit 32 further includes two symmetrically disposed gear transmission portions 322, a connecting frame 323 and a connecting shaft 324, the two gear transmission portions 322 are connected through the connecting frame 323, and the two gear transmission portions 322 are in transmission connection through the connecting shaft 324; the two cam assemblies 321 are arranged on the connecting frame 323; the driving unit 31 comprises a speed reducer 311 and a servo motor 312, the speed reducer 311 is mounted on one cam assembly 321, the servo motor 312 is connected with the speed reducer 311, and an output shaft of the speed reducer 311 is in transmission connection with the connecting shaft 324; the gear transmission part 322 comprises a supporting plate 3221, a first gear 3222, a second gear 3223 and a third gear 3224, wherein the first gear 3222, the second gear 3223 and the third gear 3224 are in meshing transmission connection, and the three are rotatably mounted on the outer side surface of the supporting plate 3221; the first gear 3222 is connected to the connecting shaft 324, and a first protruding shaft 3225 is disposed on an outer side surface thereof; the second gear 3223 is connected to the adjacent cam member 321; a second protruding shaft 3226 is disposed on the outer lateral surface of the third gear 3224.

Through the above structural design, during operation, the servo motor 312 is started, then the servo motor 312 drives the connecting shaft 324 through the speed reducer 311, the speed reducer 311 and the connecting shaft 324 can be driven by a chain wheel and a synchronous belt or a chain wheel and a chain, the connecting shaft 324 rotates to drive the first gear 3222 to rotate, the first gear 3222 drives the second gear 3223 engaged with the first gear 3222 to rotate, the second gear 3223 drives the third gear 3224 engaged with the second gear 3223 to rotate, and meanwhile, the cam component 321 connected with the second gear 3223 also starts to operate to drive the cam link 33 to move. A first protruding shaft 3225 and a second protruding shaft 3226 are respectively disposed on the first gear 3222 and the third gear 3224, and are used for driving the sliding frame 21 to move.

Preferably, the cam assembly 321 includes a first cam plate 3211, a second cam plate 3212 and a bearing seat 3213; the first cam plate 3211 is connected to the link frame 323; the first cam plate 3211 is connected with the adjacent support plate 3221 through the bearing seat 3213, a cam transmission shaft is arranged on the second cam plate 3212, and the cam transmission shaft is mounted on the bearing seat 3213 and connected with the second gear 3223; the second cam plate 3212 is provided with a through strip-shaped sliding groove, and the cam shaft 332 is sleeved with a first bearing and is slidably connected with the strip-shaped sliding groove through the first bearing. Through the above structure, the first cam plate 3211 is fixed to the connecting frame 323, and is butted against the supporting plate 3221 through the bearing seat 3213, and then the second cam plate 3212 has a cam transmission shaft on its inner side, and is connected to the second gear 3223 through the cam transmission shaft. In operation, the second gear 3223 is rotated by the first gear 3222, and the cam transmission shaft drives the second cam plate 3212 to rotate, and the strip-shaped sliding groove on the second cam plate 3212 drives the cam shaft 332 to move through the first bearing.

Preferably, the second cam plate 3212 has an arcuate configuration.

Preferably, a limit groove 32111 is formed in the first cam plate 3211, and a second bearing is sleeved at an end of the cam shaft 332 and slidably connected with the limit groove 32111 through the second bearing. Because the strip-shaped chute on the second cam plate 3212 is a strip-shaped structure, a certain moving space is reserved in the strip-shaped chute, so that the cam shaft 332 can move within a certain range, in order to more accurately control the moving track of the cam shaft 332, in this embodiment, the first cam plate 3211 is provided with the concave limiting groove 32111, the end of the cam shaft 332 is provided with the second bearing, so that the second bearing is inserted into the limiting groove 32111, and thus when the second cam plate 3212 drives the cam shaft 332 to move, the cam shaft 332 can move along the limiting groove 32111, so as to achieve the effect of reciprocating motion.

Preferably, the upper portion of the limit groove 32111 is a horizontal linear structure, and the lower portion is an arc structure. Through the above structure design, when the cam shaft 332 moves to the horizontal straight portion, the lower sealing cutter die 23 connected with the cam link 33 is at the highest position of the lift, and is attached to the upper sealing cutter die 22 to clamp, heat seal and cut the packaging bag. The horizontal straight line structure on the upper portion of the limit groove 32111 provides sufficient time for the clamping work of the two cutting dies, then the cam shaft 332 enters the arc-shaped structure, the upper cutting die 22 and the lower cutting die 23 are separated, and then when the horizontal straight line structure is entered again, the upper cutting die 22 and the lower cutting die 23 are attached again for sealing operation.

Preferably, the sliding frame 21 includes two sliding units symmetrically disposed and mutually engaged with the two gear transmission portions 322; the sliding unit comprises a first connecting plate 211, a linear optical axis 212 and a second connecting plate 213; the linear optical axis 212 is disposed on the first connecting plate 211, and two ends of the second connecting plate 213 are respectively connected to the first protruding shaft 3225 and the second protruding shaft 3226; the second connecting plate 213 is provided with a pair of clamping seats, and the clamping seats are connected with the linear optical axis 212. Through the above structure design, when the first gear 3222 and the third gear 3224 rotate, the first protruding shaft 3225 and the second protruding shaft 3226 move simultaneously and drive the second connecting plate 213 connected thereto to perform reciprocating lifting motion, and because the second connecting plate 213 is connected to the first connecting plate 211 through the linear optical axis 212, when the second connecting plate 213 moves, the first connecting plate 211 and the linear optical axis 212 reciprocate along with the first connecting plate 213, and drive the upper seal cutter die 22 located at the top of the linear optical axis 212 to perform reciprocating lifting motion.

Preferably, the upper sealing cutter die 22 includes a buffering unit and an upper sealing cutter unit, the buffering unit is fixedly connected to the top of the linear optical axis 212, the upper sealing cutter unit is slidably connected to the linear optical axis 212, the buffering unit is connected to the upper sealing cutter unit, and the buffering unit is used for buffering the upper sealing cutter unit when the upper sealing cutter unit ascends. Because the lower sealing cutter die 23 is driven by the cam connecting rod 33, in order to reduce the damage between the cutter dies, the buffer unit is arranged in the upper sealing cutter die 22 and buffers through the buffer unit, so that when the lower sealing cutter die 23 and the upper sealing cutter unit are butted and pressed, a certain buffer space is formed, and the phenomenon that the packaging bag is damaged due to overlarge extrusion pressure of the lower sealing cutter die and the upper sealing cutter unit is avoided.

Preferably, the reinforcing plate 333 is provided with a weight-reducing slot, and the end of the weight-reducing slot is connected with the side plate 331 through a bolt; bolt holes are respectively formed in two sides of the top of the side plate 331, and screws are arranged in the bolt holes to clamp the push rod 334. Through setting up and subtract heavy groove, can alleviate cam link 33's weight, avoid the too big drive effect that influences of dead weight. In addition, the bolt holes are formed in the top of the side plate 331, and the push rod 334 is clamped by screwing the screws, so that the installation is convenient and fast.

Preferably, the bottom of the side plate 331 is connected with a clamping block 336 through a bolt, the bottom of the side plate 331 is provided with a first groove of a semicircular structure, the clamping block 336 is provided with a second groove matched with the first groove, and the first groove and the second groove clamp the cam shaft 332 together. In this embodiment, the bottom of curb plate 331 presss from both sides tight camshaft 332 through a joint piece 336 to both are equipped with half-round recess and come adaptation camshaft 332, and such structure makes things convenient for the installation between curb plate 331 and the camshaft 332, also makes things convenient for the dismantlement and the debugging of equipment.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a drive unit drives transmission unit, and two cam subassemblies among the transmission unit drive the camshaft for cam connecting rod drives down and seals the motion of cutting die, and transmission unit drives the carriage simultaneously and is elevating movement, makes on the carriage seal the same motion of cutting die, has realized that actuating mechanism drives through transmission unit and seals the cutting die and seal the cutting die down and carry out reciprocating motion, realizes the function of sealing of wrapping bag. The utility model discloses a two sets of cam pack's design has increased cam connecting rod for seal the both sides atress balance of cutting die down, the wrapping bag seal more firmly, played that the transmission is steady, balanced atress and reduce high-speed operation shake effect.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A reciprocating type double-cam end sealing mechanism is characterized by comprising a rack (1), wherein a sliding block assembly (2) and a driving assembly (3) are arranged on the rack; the sliding block assembly comprises a sliding frame (21), an upper cutting sealing die (22) and a lower cutting sealing die (23), the upper cutting sealing die is arranged at the top end of the sliding frame, and the lower cutting sealing die is slidably arranged on the sliding frame; the driving component comprises a driving unit (31), a transmission unit (32) and a cam connecting rod (33); the driving unit is in transmission connection with the transmission unit; two cam assemblies (321) are arranged in the transmission unit and are arranged oppositely; the cam connecting rod comprises two side plates (331), and a cam shaft (332), a reinforcing plate (333) and a push rod (334) are arranged between the two side plates respectively; the camshaft is arranged between the two cam assemblies; the two cam assemblies are connected with the cam shaft and can drive the cam shaft to reciprocate; two ends of the push rod are respectively and rotatably connected with a rotating block (335), and the rotating blocks are connected with the lower knife sealing die; the transmission unit is connected with the sliding frame and can drive the sliding frame to do reciprocating lifting motion.

2. The reciprocating double-cam end sealing mechanism according to claim 1, wherein the transmission unit further comprises two symmetrically arranged gear transmission parts (322), a connecting frame (323) and a connecting shaft (324), the two gear transmission parts are connected through the connecting frame, and the two gear transmission parts are in transmission connection through the connecting shaft; the two cam assemblies are arranged on the connecting frame; the driving unit comprises a speed reducer (311) and a servo motor (312), the speed reducer is installed on one cam assembly, the servo motor is connected with the speed reducer, and an output shaft of the speed reducer is in transmission connection with the connecting shaft; the gear transmission part comprises a supporting plate (3221), a first gear (3222), a second gear (3223) and a third gear (3224), the first gear, the second gear and the third gear are in meshing transmission connection, and the first gear, the second gear and the third gear are rotatably arranged on the outer side surface of the supporting plate; the first gear is connected with the connecting shaft, and a first convex shaft (3225) is arranged on the outer side surface of the first gear; the second gear is connected with the adjacent cam assembly; and a second convex shaft (3226) is arranged on the outer side surface of the third gear.

3. The reciprocating dual cam end seal mechanism of claim 2 wherein said cam assembly includes a first cam plate (3211), a second cam plate (3212) and a bearing block (3213); the first cam plate is connected with the connecting frame; the first cam plate is connected with the adjacent supporting plate through the bearing seat, the second cam plate is provided with a cam transmission shaft, and the cam transmission shaft is arranged on the bearing seat and connected with the second gear; the second cam plate is provided with a through strip-shaped sliding groove, and the cam shaft is sleeved with a first bearing and is in sliding connection with the strip-shaped sliding groove through the first bearing.

4. The reciprocating dual cam end seal mechanism of claim 3 wherein said second cam plate is of arcuate configuration.

5. The reciprocating double-cam end sealing mechanism of claim 3, wherein a limit groove (32111) is formed in the first cam plate, and a second bearing is sleeved on an end of the cam shaft and is slidably connected with the limit groove through the second bearing.

6. The reciprocating dual cam end seal mechanism of claim 5 wherein said upper portion of said limit groove is a horizontal straight line configuration and the lower portion is an arcuate configuration.

7. The reciprocating dual cam end seal mechanism of claim 2 wherein said carriage includes two symmetrically disposed slide units, said two slide units being disposed in cooperation with said two gear drive portions; the sliding unit comprises a first connecting plate (211), a linear optical axis (212) and a second connecting plate (213); the linear optical axis is arranged on the first connecting plate, and two ends of the second connecting plate are respectively connected with the first convex shaft and the second convex shaft; and the second connecting plate is provided with a pair of clamping seats, and the clamping seats are connected with the linear optical axis.

8. The reciprocating double-cam end sealing mechanism of claim 7, wherein the upper sealing cutter die comprises a buffering unit and an upper sealing cutter unit, the buffering unit is fixedly connected with the top of the linear optical axis, the upper sealing cutter unit is slidably connected with the linear optical axis, the buffering unit is connected with the upper sealing cutter unit, and the buffering unit is used for buffering the upper sealing cutter unit when the upper sealing cutter unit ascends.

9. The reciprocating double-cam end seal mechanism according to any one of claims 1 to 8, wherein the reinforcing plate is provided with weight-reducing grooves, and the end parts of the weight-reducing grooves are connected with the side plates through bolts; bolt holes are respectively formed in two sides of the top of the side plate, and screws are arranged in the bolt holes to clamp the push rod.

10. The reciprocating double-cam end sealing mechanism of claim 9, wherein a clamping block (336) is connected to the bottom of the side plate through a bolt, a first groove of a semicircular structure is formed in the bottom of the side plate, a second groove matched with the first groove is formed in the clamping block, and the first groove and the second groove clamp the camshaft together.