Intelligent TSM plastic package ultrasonic sealing equipment

Abstract

The invention relates to the technical field of plastic sealing equipment, and discloses intelligent TSM plastic package ultrasonic sealing equipment which comprises a sealing machine body, a welding head arranged at the bottom of the sealing machine body, a pressing head arranged at the end, close to the welding head, of the sealing machine body and an adjusting mechanism arranged at the bottom of the side, close to the welding head, of the pressing head. The adjusting mechanism comprises a shell arranged at the bottom of the side, close to the welding head, of the pressing head, a sleeve arranged in the shell, a plurality of expansion holes formed in the outer wall of the sleeve in an annular array mode, damping strips arranged on the inner walls of the expansion holes, and rotating blocks arranged at the ends, away from the expansion holes, of the sleeve, wherein the two ends of the sleeve are rotationally connected with the inner wall of the shell. The gear rings are arranged on the outer sides of the damping strips in a linear array mode, and the limiting rings are arranged on the sides, away from the rotating blocks, of the gear rings. And by arranging the adjusting mechanism, adaptation to the thicknesses of different positions of the plastic package sealing line is achieved, it is guaranteed that the different positions are evenly stressed, and the sealing pressure can be adjusted.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of plastic sealing equipment, and in particular to an intelligent TSM plastic packaging ultrasonic sealing device. BACKGROUND

[0002] The intelligent TSM plastic packaging ultrasonic sealing device is a key precision equipment on a modern packaging production line, and the core function thereof is to realize efficient, clean and high-strength sealing of plastic packaging materials. The device utilizes an ultrasonic generator to generate high-frequency electric energy, converts the high-frequency electric energy into mechanical vibration of the same frequency through a transducer, and transmits the mechanical vibration to a welding head. When the welding head acts on a sealing area of the plastic packaging with a specific pressure, instantaneous high temperature is generated between molecules due to intense friction, so that the contact surfaces of the two layers of plastic are rapidly melted and integrated, and after the pressure is removed, the contact surfaces are cooled and solidified to form a firm, beautiful and highly sealed sealing. Compared with a traditional heat sealing method, the biggest advantage of the device is that energy is highly concentrated, the heating time is only milliseconds, and heat only acts on a very thin area of the sealing, without damaging the packaging content, and the device is particularly suitable for heat-sensitive products. The intelligence of the device is reflected in that advanced sensors and control systems are integrated, so that key parameters such as vibration frequency, amplitude and time can be monitored and accurately controlled in real time, the consistency and reliability of the quality of each sealing are ensured, and the device can be automatically adjusted to adapt to films of different thicknesses and materials. The device not only greatly improves production efficiency and reduces energy consumption, but also eliminates the risk of product leakage and pollution caused by poor sealing, and provides reliable quality assurance for food, medicine, electronics and other high-cleanliness industries.

[0003] The traditional ultrasonic sealing device is widely used in the field of plastic sealing, but due to the limitations of its structure and working principle, there are some problems that cannot be ignored. The existing plastic packaging ultrasonic sealing device has two core limitations in application. First, the adaptability to the thickness change of the plastic bag is poor. When the bag is wrinkled, the sealing area is overlapped or the material itself is not uniform, the thickness difference is caused, the thinner or single position bears too much pressure, and the material is easily damaged or melted, which seriously affects the sealing performance of the packaging and the yield. Second, pressure adjustment and uniformity control is another pain point. The traditional device mostly uses a whole mechanical pressure, the adjustment process is complicated, and the pressure uniformity of the contact surface between the welding head and the bag body cannot be guaranteed, and the phenomenon of insufficient edge pressure and excessive center pressure often occurs, resulting in inconsistent sealing strength. These problems not only increase production loss, but also limit the response ability of the device to diversified and high-precision packaging requirements. SUMMARY

[0004] In view of the problems in the prior art that the sealing device cannot adapt to the thickness of the plastic bag at different positions and the sealing pressure cannot be adjusted conveniently, an intelligent TSM plastic packaging ultrasonic sealing device is provided.

[0005] The purpose is to enable the sealing device to uniformly apply pressure to different thickness positions of the plastic bag and to have the function of adjusting the sealing pressure according to production needs.

[0006] The technical scheme of the present application is an intelligent TSM plastic packaging ultrasonic sealing device, which comprises a sealing machine main body, a welding head arranged at the bottom of the sealing machine main body, a pressure head arranged at one end of the sealing machine main body close to the welding head, and an adjusting mechanism arranged at the bottom of the pressure head close to the welding head.

[0007] Further, the telescopic unit comprises a top rod arranged at the top of the gear ring in the shell, and a gear arranged at the bottom of the top rod, which is engaged with the gear ring. The rotating block drives the sleeve to rotate, the sleeve drives the damping strip to rotate, the damping strip drives the gear ring to rotate through friction, the gear ring drives the top rod to move horizontally through the gear, and different gear rings remain coaxial under the action of the corresponding limiting ring and limiting groove, and adjacent gear rings can rotate relative to each other while remaining coaxial.

[0008] Further, one end of the gear ring close to the limiting ring is provided with a through hole, and the side of the damping strip away from the sleeve is provided with an arc plate, and the curvature of the arc plate matches the curvature of the inner wall of the through hole.

[0009] Further, the inner wall of the shell close to the rotating block is adaptively connected with the nearest limiting groove, and the inner wall of the shell away from the rotating block is adaptively connected with the nearest limiting ring.

[0010] Further, the inside of the sleeve is provided with a cylindrical cavity, and the expansion hole penetrates from the outer wall of the sleeve to the cavity.

[0011] Further, the outer expansion unit includes a pull rod arranged inside the sleeve, a threaded hole opened at the end of the rotating block away from the sleeve, a plurality of linear arrays of short shafts arranged at the bottom of the damping strip, a plurality of linear arrays of conical frustums arranged outside the pull rod, the number of conical frustums being equal to that of the short shafts, the bottom end of the short shaft abutting against the conical surface of the corresponding conical frustum, and a knob arranged at the end of the pull rod close to the rotating block.

[0012] Further, the outer wall of the pull rod is provided with a threaded groove close to the threaded hole, and the threaded groove is threadedly connected with the threaded hole.

[0013] Further, the locking unit includes a sliding groove opened at the inner wall of the housing, a plurality of linear arrays of sliding pairs arranged inside the sliding groove, the number of sliding pairs being equal to that of the jacks, a pressing block symmetrically arranged at the top of the sliding pair, a pressing groove opened at the bottom of the jack, the inner wall of the pressing groove being matched with the pressing block, a driving rod commonly arranged at the inner wall of the plurality of pressing block groups, a worm wheel arranged at the end of the driving rod close to the rotating block, and a worm arranged outside the worm wheel.

[0014] Further, the sliding pair is composed of two sliding blocks with the same shape, the driving rod is composed of a plurality of bidirectional screw rods, and the bottom of the sliding block is adaptively threadedly connected with the corresponding bidirectional screw rod.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1. By arranging the adjusting mechanism, the device can stretch and contract by different jacks to adapt to the thickness of different positions of the plastic bag, ensure uniform stress when the plastic bag is sealed, allow the jacks to move independently, compensate for the thickness difference of the packaging material, realize full contact of the sealing surface, avoid sealing defects caused by uneven thickness, ensure the consistency of sealing quality, and improve the product qualification rate.

[0016] 2. By arranging the outer expansion unit, the pressure of the device when sealing the plastic bag can be adjusted to meet the sealing needs of different products. The outer expansion unit changes the force exerted, adapts to packaging of different sizes and different materials, ensures that the pressure distribution meets the product characteristics, realizes personalized sealing, and guarantees the sealing effect of various packages.

[0017] 3. By arranging the locking unit, the jacks are fixed to ensure their stability during sealing operation. The locking unit locks the position of the adjusted jacks to prevent displacement during sealing, maintains the preset stretching and contraction state, ensures continuous and stable sealing pressure, avoids uneven sealing caused by jack shaking, and guarantees the reliability of sealing operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the adjusting mechanism of the present application; Figure 3 Figure 1 is a schematic diagram of the connection between the ejector rod and the shell of the present application; Figure 4 Figure 2 is a schematic diagram of the connection between the shell and the sleeve of the present application; Figure 5 Figure 3 is a schematic diagram of the overall structure of the sleeve of the present application; Figure 6 Figure 4 is a schematic diagram of the connection between the damping strip and the sleeve of the present application; Figure 7 Figure 5 is a schematic diagram of the connection between the sleeve and the rotating block of the present application; Figure 8 Figure 6 is a schematic diagram of the tooth ring structure of the present application; Figure 9 Figure 7 is a schematic diagram of the overall structure of the ejector rod of the present application; Figure 10 Figure 8 is a schematic diagram of the pressing groove structure of the present application; Figure 11 Figure 9 is a schematic diagram of the connection between the driving rod and the sliding pair of the present application; Figure 12 Figure 10 is a schematic diagram of the connection between the sliding pair and the sliding groove of the present application; Figure 13 Figure 11 is a schematic diagram of the sliding groove structure of the present application.

[0019] In the figure: 1, sealing machine main body; 2, welding head; 3, pressing head; 4, adjusting mechanism; 41, shell; 42, sleeve; 43, expansion hole; 44, damping strip; 45, rotating block; 46, tooth ring; 47, limiting ring; 48, limiting groove; 49, ejector rod; 410, rack; 411, pull rod; 412, screw hole; 413, short shaft; 414, cone; 415, knob; 416, sliding groove; 417, sliding pair; 418, pressing block; 419, pressing groove; 420, driving rod; 421, worm wheel; 422, worm. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0021] Example 1, refer to Figures 1-13For the first embodiment of the present application, an intelligent TSM plastic package ultrasonic sealing device is provided, which comprises a sealing machine body 1, a welding head 2 fixedly connected to the bottom of the sealing machine body 1, a pressure head 3 fixedly connected to one end of the sealing machine body 1 close to the welding head 2, and further comprises an adjusting mechanism 4 mounted at the bottom of the pressure head 3 close to the welding head 2 side; the adjusting mechanism 4 comprises an outer shell 41 fixedly connected to the bottom of the pressure head 3 close to the welding head 2 side, a sleeve 42 rotatably connected inside the outer shell 41, both ends of the sleeve 42 rotatably connected with the inner wall of the outer shell 41, a plurality of expansion holes 43 annularly arranged on the outer wall of the sleeve 42, a damping strip 44 slidably connected to the inner wall of the expansion hole 43, a rotating block 45 fixedly connected to one end of the sleeve 42 away from the expansion hole 43, a plurality of tooth rings 46 linearly arranged on the outer side of the damping strip 44, a limiting ring 47 fixedly connected to one side of the tooth ring 46 away from the rotating block 45, a limiting groove 48 opened on one side of the tooth ring 46 away from the limiting ring 47, the limiting ring 47 corresponding to the tooth ring 46 is rotatably connected with the adjacent limiting groove 48, an extension unit assembled at the top of the outer shell 41 close to the tooth ring 46, the extension unit is used for applying pressure to the plastic package, an outer expansion unit assembled in the sleeve 42, the outer expansion unit is used for driving the tooth ring 46 to rotate, and a locking unit assembled at the bottom of the inner wall of the outer shell 41, the locking unit is used for locking the extension unit.

[0022] Specifically, by rotating the rotating block 45 to drive the sleeve 42 to rotate, the sleeve 42 drives the damping strip 44 to rotate through the expansion hole 43, the damping strip 44 drives all the tooth rings 46 to rotate through friction while rotating, the tooth ring 46 drives the corresponding gear 410 to move while rotating, the gear 410 drives the corresponding top rod 49 to move, different top rods 49 restrict each other, so they can only move in the horizontal direction towards or away from the welding head 2, when the top rod 49 moves towards the welding head 2 is blocked, and the resistance is greater than the friction between the damping strip 44 and the tooth ring 46, the tooth ring 46 and the damping strip 44 will slide, at this time the rotation of the damping strip 44 will not drive the tooth ring 46 to rotate, the plastic package is moved to the sealing station in the correct posture, the pressure head 3 drives the adjusting mechanism 4 to move towards the welding head 2 to the maximum stroke, at this time the top rod 49 on the adjusting mechanism 4 is not in contact with the plastic package, the top rod 49 is driven to extend by rotating the sleeve 42, until the end of the top rod 49 close to the welding head 2 extrudes the plastic package, until the resistance of the top rod 49 is greater than the friction between the damping block and the tooth ring 46, when the sealing line of the plastic package has different layers of stacking, resulting in different thicknesses, the top rod 49 aligned with the thicker part moves a shorter distance and stops moving, the top rod 49 aligned with the thinner part needs to move a longer distance to stop moving, but the pressure applied by the top rod 49 at different positions on the plastic package is the same.

[0023] Reference Figures 1-9The telescopic unit comprises a top rod 49 slidingly connected to the shell 41 at the top of the tooth ring 46, a rack 410 fixedly connected to the bottom of the top rod 49, and the rack 410 is in meshing connection with the tooth ring 46; the rotating block 45 drives the sleeve 42 to rotate, the sleeve 42 drives the damping strip 44 to rotate, the damping strip 44 drives the tooth ring 46 to rotate through friction, the tooth ring 46 drives the top rod 49 to move in the horizontal direction through the rack 410, and different tooth rings 46 are kept in coaxial state under the action of the limiting ring 47 and the limiting groove 48, and adjacent tooth rings 46 can rotate relative to each other while being kept coaxial.

[0024] Specifically, the tooth ring 46 rotates to control the rack 410 to expand and contract, and the rack 410 drives the top rod 49 to move synchronously.

[0025] With reference to Figures 4-8 , one end of the tooth ring 46 close to the limiting ring 47 is provided with a through hole, and the side of the damping strip 44 away from the sleeve 42 is provided with an arc plate, and the curvature of the arc plate matches the curvature of the inner wall of the through hole.

[0026] Specifically, the top of the arc plate is adapted to the inner wall of the tooth ring 46, so as to be closely attached to the inner wall of the arc plate.

[0027] With reference to Figures 4-8 , the inner wall of the shell 41 close to the rotating block 45 is adaptively rotatably connected to the nearest limiting groove 48, and the inner wall of the shell 41 away from the rotating block 45 is adaptively rotatably connected to the nearest limiting ring 47.

[0028] Specifically, the shell 41 limits the tooth rings 46 closest to the two ends of the sleeve 42 through the corresponding limiting ring 47 and limiting groove 48, so that the whole formed by different tooth rings 46 is limited.

[0029] With reference to Figures 5-7 , the inside of the sleeve 42 is provided with a cylindrical cavity, and the expansion hole 43 penetrates from the outer wall of the sleeve 42 to the cavity.

[0030] Specifically, the sleeve 42 accommodates the pull rod 411 through the internal cavity, so that the pull rod 411 can rotate in the inside of the pull rod 411.

[0031] With reference to Figures 1-12 , the expansion unit comprises a pull rod 411 rotatably connected to the inside of the sleeve 42, a threaded hole 412 formed at the end of the rotating block 45 away from the sleeve 42, a plurality of linear arrays of short shafts 413 fixedly connected to the bottom of the damping strip 44, a plurality of linear arrays of conical frustums 414 fixedly connected to the outer side of the pull rod 411, the number of the conical frustums 414 is equal to the number of the short shafts 413, the bottom end of the short shaft 413 abuts against the conical surface of the corresponding conical frustum 414, and a knob 415 fixedly connected to the end of the pull rod 411 close to the rotating block 45.

[0032] Specifically, the knob 415 moves along its axis under the action of the screw hole 412 while rotating, and the pull rod 411 moves towards the knob 415, thereby driving the frustum 414 to move, and the frustum 414 extrudes the corresponding short shaft 413 through its conical surface while moving, so that the short shaft 413 drives the corresponding damping strip 44 to expand away from the pull rod 411, and after the damping strip 44 expands to a certain distance, the arc plate thereof contacts the inner wall of the tooth ring 46, the greater the static friction between the arc plate and the tooth ring 46, the greater the resistance that the top rod 49 can overcome when moving towards the welding head 2, and the greater the pressure applied to the plastic bag during sealing.

[0033] With reference to Figure 6 and Figure 5 , the outer wall of the pull rod 411 is provided with a threaded groove near the screw hole 412, and the threaded groove is in threaded connection with the screw hole 412.

[0034] Specifically, the threaded groove restricts the pull rod 411 through the threads on the pull rod 411, so that the pull rod 411 can only move along its axis when rotating.

[0035] Embodiment 2, with reference to Figures 1-13 , which is the second embodiment of the application, the difference between this embodiment and the first embodiment is that the locking unit comprises a sliding groove 416 opened in the inner wall of the shell 41, a plurality of linearly arrayed sliding pairs 417 slidingly connected inside the sliding groove 416, the number of the sliding pairs 417 being the same as that of the top rods 49, a pressing block 418 fixedly connected to the top of each sliding pair 417, a pressing groove 419 opened in the bottom of each top rod 49, the inner wall of the pressing groove 419 being matched with the pressing block 418, a driving rod 420 in threaded connection with the inner wall of a plurality of pressing blocks 418, a worm wheel 421 fixedly connected to one end of the driving rod 420 near the rotating block 45, and a worm 422 engagedly connected to the outer side of the worm wheel 421.

[0036] Specifically, the worm 422 is rotated to drive the worm wheel 421 to rotate, and the worm wheel 421 drives the driving rod 420 to rotate while rotating, and the driving rod 420 drives the sliding pairs 417 to move while rotating, and the sliding pairs 417 are restricted by the sliding groove 416 and can only move along the sliding groove 416, and when the two sliding blocks in the sliding pairs 417 move away from each other, the sliding blocks drive the corresponding two pressing blocks 418 to move away from each other, and after the two pressing blocks 418 move away from each other to a certain distance, they contact the inner wall of the pressing groove 419, thereby locking the top rod 49 and preventing the top rod 49 from moving, and when the driving rod 420 is reversely rotated, the corresponding two pressing blocks 418 of the sliding pairs 417 move close to each other, thereby unlocking the top rod 49.

[0037] With reference to Figures 10-12The sliding pair 417 is composed of two identical sliding blocks, and the driving rod 420 is composed of several bidirectional screw rods.

[0038] Specifically, the bidirectional screw rod rotates to drive the two sliding blocks of the sliding pair 417 to move in opposite directions, and the remaining structure is the same as that of example 1.

[0039] In summary, the working principle of the present application is as follows: when the plastic bag needs to be sealed and the thickness difference exists, the plastic bag is attached to the working surface of the welding head 2, the sleeve 42 is rotated to drive the damping strip 44 to rotate, the damping strip 44 is rotated to drive the corresponding rack 410 to move through the gear ring 46, the rack 410 drives the top rod 49 connected thereto to move together, the sleeve 42 controls all the top rods 49 to move towards the welding head 2, the top rod 49 is pressed after a certain distance, and when the pressing force is greater than the friction between the gear ring 46 and the damping strip 44, the top rod 49 stops moving, when all the top rods 49 stop moving, the worm 422 is rotated to rotate the worm wheel 421, the worm wheel 421 drives the driving rod 420 to rotate synchronously, the driving rod 420 drives the corresponding top rod 49 to be locked through the sliding pair 417, at this time, the top rod 49 in contact with the thicker part of the plastic bag and the top rod 49 in contact with the thinner part of the plastic bag have different extension amplitudes, which adapt to the thickness difference of the plastic bag during sealing, when different specifications of plastic bags are switched for processing, the top rod 49 is unlocked by reversing the driving rod 420, then the top rod 49 is moved away from the pressure head 3 by rotating the knob 415, so that all the top rods 49 are reset, then the plastic bag of different specifications is attached to the working surface of the welding head 2, and the top rod 49 is controlled to move towards the welding head 2 until it fits the thickness of the plastic bag, when the pressure of the top rod 49 on the plastic bag needs to be adjusted, the pull rod 411 is moved towards the rotating block 45 by rotating the knob 415, the pull rod 411 extrudes the short shaft 413 through the conical table 414, so that the short shaft 413 drives the damping strip 44 to move away from the pull rod 411, thereby increasing the static friction between the damping strip 44 and the gear ring 46, in this state, when the top rod 49 is adjusted to adapt to the thickness of the plastic bag, the top rod 49 needs to exert greater pressure on the plastic bag to obtain sufficient reaction force to make the damping strip 44 and the gear ring 46 slide, when the pull rod 411 moves away from the rotating block 45, the pressure of the top rod 49 on the plastic bag during sealing is reduced.

[0040] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. An intelligent TSM plastic packaging ultrasonic sealing device, comprising a sealing machine body (1), a welding head (2) disposed at the bottom of the sealing machine body (1), and a pressure head (3) disposed at one end of the sealing machine body (1) near the welding head (2), characterized in that: It also includes an adjustment mechanism (4) located at the bottom of the pressure head (3) on the side near the welding head (2); The adjustment mechanism (4) includes a housing (41) disposed at the bottom of the pressure head (3) near the welding head (2), a sleeve (42) disposed inside the housing (41), the two ends of the sleeve (42) being rotatably connected to the inner wall of the housing (41), several annular arrays of expansion holes (43) opened on the outer wall of the sleeve (42), a damping strip (44) disposed on the inner wall of the expansion holes (43), a rotating block (45) disposed at the end of the sleeve (42) away from the expansion holes (43), several linear arrays of toothed rings (46) disposed on the outside of the damping strips (44), and a toothed ring (46) disposed on the toothed ring (46). A limiting ring (47) on the side away from the rotating block (45) is provided, and a limiting groove (48) is provided on the side of the toothed ring (46) away from the limiting ring (47). The limiting ring (47) corresponding to the toothed ring (46) is rotatably connected to the adjacent limiting groove (48). A telescopic unit is provided on the outer shell (41) near the top of the toothed ring (46). The telescopic unit is used to apply pressure to the plastic bag. An expansion unit is provided inside the sleeve (42). The expansion unit is used to drive the toothed ring (46) to rotate. A locking unit is provided at the bottom of the inner wall of the outer shell (41). The locking unit is used to lock the telescopic unit.

2. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The telescopic unit includes a push rod (49) disposed on the top of the outer shell (41) near the toothed ring (46), and a rack (410) disposed at the bottom of the push rod (49), the rack (410) being engaged with the toothed ring (46); The rotating block (45) rotates while driving the sleeve (42) to rotate. The sleeve (42) drives the damping strip (44) to rotate. The damping strip (44) drives the toothed ring (46) to rotate through friction. The toothed ring (46) drives the top rod (49) to move horizontally through the rack (410). Different toothed rings (46) maintain a coaxial state under the action of the corresponding limiting ring (47) and limiting groove (48). Adjacent toothed rings (46) can rotate relative to each other while maintaining coaxiality.

3. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The toothed ring (46) has a through hole at one end near the limiting ring (47), and the damping strip (44) has an arc plate on the side away from the sleeve (42), the arc of the arc plate matching the arc of the inner wall of the through hole.

4. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The inner wall of the outer shell (41) on the side near the rotating block (45) is adaptively rotatably connected to the nearest limiting groove (48), and the inner wall of the outer shell (41) on the side away from the rotating block (45) is adaptively rotatably connected to the nearest limiting ring (47).

5. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The sleeve (42) has a cylindrical cavity inside, and the expansion hole (43) extends from the outer wall of the sleeve (42) into the cavity.

6. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The expansion unit includes a pull rod (411) disposed inside the sleeve (42), a screw hole (412) opened at the end of the rotating block (45) away from the sleeve (42), a number of short shafts (413) arranged in a linear array at the bottom of the damping strip (44), a number of truncated cones (414) arranged in a linear array on the outside of the pull rod (411), the number of truncated cones (414) being equal to the number of short shafts (413), the bottom end of the short shaft (413) abutting against the conical surface of the corresponding truncated cone (414), and a knob (415) disposed at the end of the pull rod (411) near the rotating block (45).

7. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 6, characterized in that: The outer wall of the pull rod (411) is provided with a threaded groove near the screw hole (412), and the threaded groove is threadedly connected to the screw hole (412).

8. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 1, characterized in that: The locking unit includes a groove (416) opened at the bottom of the inner wall of the outer shell (41), a number of sliding pairs (417) arranged in a linear array inside the groove (416), the number of sliding pairs (417) being the same as the number of top rods (49), pressure blocks (418) symmetrically arranged at the top of the sliding pairs (417), pressure grooves (419) opened at the bottom of the top rods (49), the inner wall of the pressure grooves (419) cooperating with the pressure blocks (418), a drive rod (420) jointly arranged on the inner wall of the group of pressure blocks (418), a worm gear (421) arranged at one end of the drive rod (420) near the rotating block (45), and a worm (422) arranged outside the worm gear (421).

9. The intelligent TSM plastic packaging ultrasonic sealing device according to claim 8, characterized in that: The sliding pair (417) consists of two sliders with the same shape, and the drive rod (420) consists of several bidirectional lead screws. The bottom of the slider is adapted to the corresponding bidirectional lead screw with a threaded connection.

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