A multi-station transfer mechanism

Abstract

The application discloses a multi-station conveying mechanism and relates to the technical field of packaging mechanical equipment, which comprises a first support, a clamping turntable capable of rotating arranged on the first support, a rotary drive motor fixed to the first support, a power output end of the rotary drive motor connected with the clamping turntable through a protractor, a plurality of clamping assemblies arranged around the side of the clamping turntable, the clamping assembly comprising two spring chucks for clamping bag bodies and a linear transmission unit for driving the two spring chucks to move synchronously towards or away from each other, a driving assembly arranged above the clamping turntable and used for driving the clamping assembly to release the bag bodies at a preset station, and at least one spacing adjusting assembly correspondingly arranged below the clamping turntable and used for driving the two clamping heads to adjust the spacing. Through the adjustable clamping assembly and the adjusting assembly, the tightness of the bag opening can be controlled, the equipment does not need to be stopped for changing tooling, and the adaptability of the equipment to different products and the production switching efficiency are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery and equipment technology, and in particular to a multi-station conveying mechanism. Background Technology

[0002] In the field of packaging machinery, the efficient and precise transfer of packaging bags between multiple independent processes is key to achieving automation. Currently, the mainstream conveyor methods are mainly divided into two categories: linear conveyor belt systems and rotary worktables. Linear conveyor belt systems typically require each functional device to be arranged linearly along the conveyor belt. The bags are passively transported on the conveyor belt, and upon arrival at each workstation, additional positioning, clamping, or blocking mechanisms are needed to stop them and proceed with processing. This method results in a long production line layout, occupies a large amount of space, and the coordination between devices relies on complex sensing and control systems, leading to accumulated positioning errors and difficulty in perfectly matching the cycle times between processes, often creating efficiency bottlenecks. The other common type, the rotary worktable, although relatively compact in structure, uses a circular turntable to arrange multiple workstations around it. However, the clamps or molds used to fix the bags are usually designed for a single product specification, and the clamping opening size is fixed and cannot be adjusted. When production requires changing to packaging bags of different widths or sizes, the machine must be stopped and the entire set of clamps must be manually replaced or tedious mechanical adjustments must be made. This is not only time-consuming and labor-intensive, but also seriously affects production efficiency and cannot meet the flexible production needs of the modern market for small batches and multiple varieties. In addition, existing conveying mechanisms generally lack the ability to actively and stably clamp the bags during the conveying process and release them precisely at designated positions. They often rely on independent and complex gripping or lifting mechanisms at each station, which not only increases the complexity of the system and the number of potential failure points, but also makes it difficult to guarantee the synchronization and reliability of the entire material flow process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multi-station conveying mechanism that can not only complete the precise synchronous conveying between multiple stations, but also realize the tightness control of the bag opening, thereby greatly improving production efficiency.

[0004] To address the aforementioned technical problems, this invention provides a multi-station conveying mechanism for conveying bags between multiple stations arranged in a ring within a packaging machine. The mechanism includes: a first support with a rotatable clamping turntable; a rotary drive motor fixed to the first support, the power output of which is connected to the clamping turntable via an indexer; multiple clamping assemblies arranged around the sides of the clamping turntable, each clamping assembly including two spring clamps for clamping the bag and a linear transmission unit for driving the two spring clamps to move synchronously towards or away from each other; a drive assembly positioned above the clamping turntable for driving the clamping assemblies to release the bag at a preset station; and at least one spacing adjustment assembly positioned below the clamping turntable, each spacing adjustment assembly including a drive head. When a clamping assembly moves to its corresponding station, the drive head engages with the power input of the linear transmission unit and drives it to move, thereby adjusting the spacing between the spring clamps.

[0005] As an improvement to the above solution, the linear transmission unit includes: a mounting base fixed to the clamping turntable, the mounting base having an adjustment rail; the spring collets being slidably connected to the adjustment rail via a first slider; a drive gear rotatably mounted on the mounting base; and two spring collets respectively meshing with the drive gear via a transmission rack, so as to adjust the spacing of the spring collets by rotating the drive gear.

[0006] As an improvement to the above solution, the linear transmission unit further includes: a transmission shaft, one end of which is connected to the drive gear, and the other end of which passes through the mounting base and the bearing seat fixed to the lower end of the mounting base in sequence, and extends to the lower part of the bearing seat to connect with the bearing sleeve, wherein the lower end of the bearing sleeve is provided with a brake block; and an elastic locking member, which is sleeved on the bearing seat, and the elastic locking member is used to clamp the transmission shaft to prevent the transmission shaft from rotating.

[0007] As an improvement to the above solution, the elastic locking component includes: two fixing plates, the upper ends of which are respectively connected to the bearing seat, and the lower ends of the fixing plates are connected through at least two spring guides; two clamping blocks are sleeved on the spring guides, and clamping openings are provided on the opposite side of the two clamping blocks; and a driving spring is sleeved on the spring guide, one end of which is connected to the fixing plate and the other end is connected to the clamping block.

[0008] As an improvement to the above solution, the spacing adjustment assembly includes: a second bracket with a vertical lifting rail; a sliding seat slidably connected to the lifting rail; an adjustment motor disposed in the mounting groove of the sliding seat, the power output end of the adjustment motor being connected to a drive head for engaging with the brake block; a lifting drive component fixed to the second bracket, the power output end of the lifting drive component being connected to the sliding seat; and two slide cylinders disposed on the sliding seat, the power output end of the slide cylinders being connected to an unlocking top plate for unlocking the elastic locking component.

[0009] As an improvement to the above solution, the clamping block is provided with driving posts at both ends, and the upper end of the unlocking top plate is provided with an arrow part; the arrow part extends between the two driving posts to open the clamping block.

[0010] As an improvement to the above solution, the slide cylinders are respectively placed horizontally at the top of the side wall of the mounting groove; the power output end of the slide cylinder is connected to an "L"-shaped connecting block, the connecting block including a first side and a second side; the first side of the connecting block is connected to the power output end of the slide cylinder, the second side of the connecting block extends to the side above the slide cylinder, and the unlocking top plate is fixed to the upper end of the second side of the connecting block.

[0011] As an improvement to the above solution, the clamping turntable is an indexing plate with multiple equidistant sides, and each side is provided with the clamping component.

[0012] As an improvement to the above solution, the spring collet includes a clamping part and a driving part, and the driving assembly presses the driving part of the spring collet to open the clamping part of the spring collet.

[0013] As an improvement to the above solution, the drive assembly includes: a mounting plate located above the clamping turntable; at least two spring drive cylinders fixed to the mounting plate, the power output ends of the two spring drive cylinders facing the loading end and the unloading end of the packaging machine respectively, and the power output ends of the spring drive cylinders are connected to drive rods.

[0014] The beneficial effects of implementing this invention are as follows:

[0015] The multi-station conveying mechanism of this invention uses an indexer to assist in driving the turntable, enabling precise positioning and conveying of bags between multiple stations. The drive components are positioned above the clamping turntable, with a layered layout, allowing complex operations to be completed in an extremely compact space. By setting adjustable clamping and adjustment components, the tightness of the bag opening can be controlled and different sizes of bags can be automatically and quickly adapted without stopping the machine to change tooling, greatly improving the equipment's adaptability to different products and production changeover efficiency. Attached Figure Description

[0016] Figure 1 This is a front view of a multi-station conveying mechanism according to an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the structure of a multi-station conveying mechanism in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the structure of the clamping component of a multi-station conveying mechanism in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of an elastic locking member of a multi-station conveying mechanism in an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the spacing adjustment component of a multi-station conveying mechanism in an embodiment of this application;

[0021] Figure 6 This is a partial structural diagram of the cooperation between the unlocking top plate and the elastic locking element of a multi-station conveying mechanism in an embodiment of this application;

[0022] Figure 7 This is a top view of a multi-station conveying mechanism in an embodiment of this application.

[0023] The reference numerals in the attached drawings are explained as follows: 100, first support; 110, clamping turntable; 200, rotary drive motor; 210, indexing device; 300, clamping assembly; 310, mounting base; 311, adjusting track; 320, spring collet; 321, drive unit; 322, clamping unit; 330, drive gear; 340, transmission shaft; 350, bearing housing; 360, elastic locking element; 361, fixing plate; 362, spring guide tube; 363. Clamping block; 364, Drive spring; 365, Drive column; 370, Bearing sleeve; 371, Brake block; 400, Drive assembly; 410, Spring drive cylinder; 411, Drive rod; 420, Mounting plate; 500, Spacing adjustment assembly; 510, Second bracket; 520, Sliding seat; 530, Adjustment motor; 540, Drive head; 550, Lifting drive component; 560, Slide cylinder; 561, Connecting block; 570, Unlocking top plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] See Figures 1-2 , Figure 1 This is a front view of a multi-station conveying mechanism according to an embodiment of this application; Figure 2This is a schematic diagram of a multi-station conveying mechanism according to an embodiment of this application. As shown in the figure, the conveying mechanism is used to convey bags between multiple stations arranged in a ring within a packaging machine. It includes: a first support 100, on which a rotatable clamping turntable 110 is provided; a rotary drive motor 200, fixed to the first support 100, the power output end of the rotary drive motor 200 being connected to the clamping turntable 110 via an indexer 210; and multiple clamping assemblies 300, arranged around the side of the clamping turntable 110, each clamping assembly 300 including two spring clamps 3 for clamping the bag. 20. A linear transmission unit that drives the two spring clamps 320 to move synchronously towards or away from each other; a drive assembly 400, disposed above the clamping turntable 110, for driving the clamping assembly 300 to release the bag at a preset workstation; at least one spacing adjustment assembly 500, correspondingly disposed below the clamping turntable 110, the spacing adjustment assembly 500 including a drive head 540, which, when the clamping assembly 300 moves to its corresponding workstation, can connect with the power input end of the linear transmission unit and drive it to move, thereby adjusting the spacing between the two spring clamps 320. Specifically, the rotary drive motor 200 drives the clamping turntable 110 to rotate precisely intermittently through the indexer 210. The clamping assembly 300 on the side of the turntable conveys the bag during rotation. When the bag needs to be handed over at a preset workstation, the drive assembly 400 located above the turntable actuates, driving the clamping assembly 300 to release the bag. When different bag sizes need to be accommodated, the spacing adjustment component 500 located below the turntable at the corresponding workstation is activated, driving the two gripping heads of the clamping component 300 to adjust the spacing. The indexer 210 assists in driving the turntable, enabling precise positioning and transfer of the bag between multiple workstations. The drive component 400 is positioned above the clamping turntable 110, employing a layered layout, allowing complex operations to be completed within an extremely compact space. The adjustable clamping component 300 and adjustment component enable tightness control of the bag opening, eliminating the need to stop the machine to change tooling, greatly improving the equipment's adaptability to different products and production changeover efficiency.

[0026] See Figure 3 , Figure 3 This is a schematic diagram of the structure of the clamping component 300 of a multi-station conveying mechanism in an embodiment of this application;

[0027] Furthermore, in this embodiment, the linear transmission unit includes: a mounting base 310 fixed to the clamping turntable 110, with an adjustment track 311 on the mounting base 310; a spring clamp 320 slidably connected to the adjustment track 311 via a first slider; and a drive gear 330 rotatably mounted on the mounting base 310. The two spring clamps 320 are respectively meshed with the drive gear 330 via a transmission rack, allowing the distance between the two spring clamps 320 to be adjusted by the rotation of the drive gear 330. When the distance needs to be adjusted, the drive gear 330 is driven to rotate by an external power, causing the two meshing transmission racks to move in opposite linear directions, thereby synchronously driving the two spring clamps 320 to slide towards or away from each other along the adjustment track 311. The transmission mechanism formed by the gear and rack ensures that the movement of the two clamping heads is completely synchronized and the displacement is symmetrical, ensuring that the center of the bag is always aligned and the adjustment accuracy is high.

[0028] Preferably, the adjustment track 311 has two parallel sections, and the middle of the adjustment track 311 is divided into two segments. The two spring clamps 320 are slidably connected to the corresponding adjustment slide rails. Using two parallel and independent adjustment tracks 311 enhances the overall rigidity of the clamping assembly 300 during adjustment and when bearing the load of the bag. This effectively prevents bending, deformation, or vibration that may occur with a single slender track, ensuring that the clamping head remains stable in any position, thereby guaranteeing adjustment accuracy and long-term operational reliability. The middle-segment layout allows the rotational force of the drive gear 330 to be directly and symmetrically transmitted to the corresponding clamps and tracks through the racks on both sides, resulting in a clear and short force flow path.

[0029] See Figure 3 Furthermore, in this embodiment, the linear transmission unit further includes: a transmission shaft 340, one end of which is connected to the drive gear 330, and the other end passing through the mounting base 310 and the bearing seat 350 fixed to the lower end of the mounting base 310, and extending to the underside of the bearing seat 350 to connect with the bushing sleeve 370, the lower end of the bushing sleeve 370 being provided with a brake block 371; and an elastic locking member 360, sleeved on the bearing seat 350, which is used to clamp the transmission shaft 340 to prevent the transmission shaft 340 from rotating. Under the action of spring force, the elastic locking member 360 clamps the transmission shaft 340, preventing it from rotating, thereby locking the drive gear 330 and the clamping head spacing, fundamentally preventing the clamping spacing from spontaneously changing during operation and vibration, and ensuring the stability of the transmission process.

[0030] See Figure 4 , Figure 4 This is a schematic diagram of the structure of an elastic locking member of a multi-station conveying mechanism in an embodiment of this application;

[0031] Furthermore, in this embodiment, the elastic locking member 360 includes: two fixing plates 361, the upper ends of which are respectively connected to the bearing seat 350, and the lower ends of the two fixing plates 361 are connected through two spring guide tubes 362; two clamping blocks 363 are sleeved on the spring guide tubes 362, and clamping openings are provided on the opposite sides of the two clamping blocks 363; four driving springs 364 are sleeved on the spring guide tubes 362, one end of the driving spring 364 is connected to the fixing plate 361, and the other end is connected to the clamping block 363. Under normal conditions, the elastic force of the driving spring 364 is transmitted to the two clamping blocks 363 through the spring guide tubes 362, forcing them to move towards each other and using the clamping openings to lock the drive shaft 340. When unlocking is required, the externally applied force pushes the two clamping blocks 363 away in the opposite direction along the spring guide tubes 362, compressing the driving springs 364, thereby releasing the clamping of the drive shaft 340. It achieves self-locking using spring force and a simple sliding block structure, requiring no electrical or hydraulic holding, resulting in extremely low failure risk and rapid response.

[0032] See Figure 5 , Figure 5 This is a schematic diagram of the spacing adjustment component 500 of a multi-station conveying mechanism in an embodiment of this application;

[0033] Furthermore, in this embodiment, the spacing adjustment component 500 includes: a second bracket 510, on which a vertical lifting rail is provided; a sliding seat 520, slidably connected to the lifting rail; an adjustment motor 530, disposed in the mounting groove of the sliding seat 520, the power output end of the adjustment motor 530 being connected to a drive head 540 for docking with the brake block 371; a lifting drive member 550, fixed to the second bracket 510, the power output end of the lifting drive member 550 being connected to the sliding seat 520; and two slide cylinders 560, disposed on the sliding seat 520, the power output end of the slide cylinders 560 being connected to an unlocking top plate 570 for unlocking the elastic locking member 360. In use, the slide cylinder 560 adjusts the position of the unlocking top plate 570, and the lifting drive 550 pushes the sliding seat 520 upward, causing the drive head 540 of the adjusting motor 530 to engage with the brake block 371 at the lower end of the transmission shaft 340. Simultaneously, the unlocking top plate 570 pushes open the clamping block 363 of the elastic locking member 360, releasing the lock on the transmission shaft 340. The adjusting motor 530 rotates, driving the transmission shaft 340 to rotate via the drive head 540 and brake block 371, completing the spacing adjustment. After adjustment, the slide cylinder 560 resets, and the clamping block 363 re-locks the transmission shaft 340 under the action of the spring; subsequently, the lifting drive 550 drives the entire assembly to descend and reset, achieving fully automatic, sequential, and precise adjustment. The spacing adjustment component 500 can not only automatically and quickly adapt to bags of different sizes, but also, in the bag-filling process, first reduce the distance between the two spring clamps 320 to loosen the tight bag opening, making it easier to open the bag and cut the material at the unloading station. After the material is cut, the spacing adjustment component 500 increases the distance between the two spring clamps 320 to straighten the loose bag opening, making it easier to carry out the subsequent sealing process.

[0034] See Figure 4 and Figure 6 , Figure 6 This is a partial structural diagram of the engagement between the unlocking top plate 570 and the elastic locking member 360 of a multi-station conveying mechanism in an embodiment of this application.

[0035] Furthermore, in this embodiment, the clamping block 363 is provided with drive posts 365 at both ends, and the upper end of the unlocking top plate 570 is provided with an arrowhead; the arrowhead extends between the two drive posts 365 to open the clamping block 363. During the upward movement, the arrowhead at the upper end of the unlocking top plate 570 inserts between the drive posts 365 of the clamping block 363, and the wedge-shaped arrowhead opens the two drive posts 365 to both sides, thereby causing the clamping block 363 to separate. The wedge structure converts the vertical thrust into a horizontal force for separating the clamping block 363, resulting in high mechanical efficiency and a decisive and thorough unlocking action; the cylindrical drive posts 365 and the wedge-shaped surface have good self-centering properties, and the contact is rolling or sliding friction, resulting in minimal wear.

[0036] See Figure 5 Furthermore, in this embodiment, two sliding cylinders 560 are respectively horizontally positioned at the top of the side wall of the mounting slot; the power output end of the sliding cylinder 560 is connected to an "L"-shaped connecting block 561, the connecting block 561 including a first side and a second side, wherein the first side is the short side and the second side is the long side; the first side of the connecting block 561 is connected to the power output end of the sliding cylinder 560, and the second side of the connecting block 561 extends to the upper side of the sliding cylinder 560, and the unlocking top plate 570 is fixed to the upper end of the second side of the connecting block 561. Arranging the sliding cylinders 560 horizontally on the compact side wall of the mounting slot greatly saves vertical space, making the entire adjustment assembly structure flatter and more compact. The "L"-shaped structure provides additional guidance for the unlocking top plate 570, making its movement smoother and less prone to jamming.

[0037] See Figure 7 , Figure 7 This is a top view of a multi-station conveying mechanism according to an embodiment of this application;

[0038] Furthermore, in this embodiment, the clamping turntable 110 is an indexing plate with four equidistant sides, each of which is provided with a clamping component 300. The four-station layout is the actual configuration for most automated packaging processes, achieving an optimal balance between equipment complexity and production efficiency. Each rotation cycle can process one bag, resulting in high equipment time utilization and no wasted idle time.

[0039] Furthermore, in this embodiment, the spring collet 320 includes a clamping portion 322 and a driving portion 321. The spring collet 320 is in a clamped state under normal conditions; when the driving assembly 400 presses the driving portion 321 of the spring collet 320, the clamping portion 322 of the spring collet 320 opens.

[0040] See Figure 7 Furthermore, in this embodiment, the driving assembly 400 includes: a mounting plate 420 located above the clamping turntable 110; at least two spring drive cylinders 410 fixed to the mounting plate 420, with the power output ends of the two spring drive cylinders 410 facing the feeding end and discharging end of the packaging machine, respectively, and the power output ends of the spring drive cylinders 410 connected to drive rods 411. When the bag needs to be released at a preset station, the spring drive cylinder 410 corresponding to that station is activated, the drive rod 411 extends, and presses down on the driving part 321 of the spring clamp 320, overcoming the spring force to open the clamping part 322, and the bag falls off.

[0041] Furthermore, in this embodiment, the workflow of the present invention is briefly described as follows:

[0042] A rotary drive motor 200 drives a clamping turntable 110 to rotate precisely and intermittently via an indexer 210. At the loading station, the bag is placed into and clamped in the open spring clamps 320 opened by the drive assembly 400. The turntable rotates, sequentially conveying the bags to each processing station. At the unloading station, the processed bags are released again by the drive assembly 400 opening the clamps. If a change in bag size is required, when the empty clamping assembly 300 rotates to the adjustment station, the spacing adjustment assembly 500 below it automatically activates: first, it unlocks the elastic locking element 360 within the clamping assembly 300; then, it adjusts the spacing between the two spring clamps 320 via the drive gear 330 and rack mechanism; finally, it re-locks them. The adjusted clamping assembly 300 then enters the next cycle, achieving flexible production changeover without stopping the machine. All actions are triggered based on the stopping point of the indexing rotation. This eliminates timing mismatches, waiting times, and accumulated errors common in independently driven, distributed control conveyor systems. This eliminates waiting time between processes, maximizing equipment time utilization. Spacing adjustment is set as a standard station action, automatically completed when an empty clamping component passes through the station. This allows for seamless switching between different bag sizes without interrupting the main process. Drive and adjustment commands are issued only by the corresponding component when the clamping component rotates to a fixed angle. This simplifies control logic, eliminates the need for dynamic tracking, and improves operational reliability.

[0043] As can be seen from the above, the multi-station conveying mechanism of the present invention, through the indexer assisting the drive turntable, realizes the precise positioning and conveying of the bag between multiple stations; by setting the drive component above the clamping turntable and adopting an upper and lower layered layout, it enables the completion of complex operations in an extremely compact space; by setting adjustable clamping components and adjustment components, it realizes the tightness control of the bag opening and the automatic and rapid adaptation of different bag sizes, without stopping the machine to change tooling, which greatly improves the adaptability of the equipment to different products and the efficiency of production switching.

[0044] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multi-station conveying mechanism for conveying bags between multiple stations arranged in a ring within a packaging machine, characterized in that, include: A first support, on which a rotatable clamping turntable is provided; A rotary drive motor is fixed to the first bracket, and the power output end of the rotary drive motor is connected to the clamping turntable through an indexer; Multiple clamping components are arranged around the side of the clamping turntable. Each clamping component includes two spring clamps for clamping the bag body and a linear transmission unit for driving the two spring clamps to move synchronously towards or away from each other. A drive component is disposed above the clamping turntable and is used to drive the clamping component to release the bag at a preset workstation; At least one spacing adjustment component is correspondingly disposed below the clamping turntable. The spacing adjustment component includes a drive head. When the clamping component moves to its corresponding work position, the drive head can connect with the power input end of the linear transmission unit and drive it to move, so as to adjust the spacing of the spring clamps. The linear transmission unit includes: A mounting base is fixed to the clamping turntable, and an adjustment rail is provided on the mounting base; the spring chuck is slidably connected to the adjustment rail via a first slider; A drive gear is rotatably mounted on the mounting base; the two spring collets are respectively meshed with the drive gear via a transmission rack, so as to adjust the spacing of the spring collets by rotating the drive gear; A drive shaft, one end of which is connected to the drive gear, and the other end passes through the mounting base and the bearing seat fixed to the lower end of the mounting base in sequence, and extends to the lower part of the bearing seat to connect with the bearing sleeve. The lower end of the bearing sleeve is provided with a brake block. An elastic locking element is sleeved on the bearing housing, and the elastic locking element is used to clamp the drive shaft to prevent the drive shaft from rotating; The elastic locking element includes: Two fixing plates, the upper ends of which are respectively connected to the bearing seat, and the lower ends of the fixing plates are connected by at least two spring guide tubes; Two clamping blocks are sleeved on the spring guide tube, and clamping openings are provided on the opposite side of the two clamping blocks; A drive spring is sleeved on the spring guide tube, one end of the drive spring is connected to the fixed plate, and the other end is connected to the clamping block; The spacing adjustment component includes: The second support is equipped with a vertical lifting track; The sliding seat is slidably connected to the lifting track; An adjustment motor is installed in the mounting slot of the sliding seat, and the power output end of the adjustment motor is connected to a drive head for docking with the brake block; A lifting drive component is fixed to the second bracket, and the power output end of the lifting drive component is connected to the sliding seat; Two slide cylinders are mounted on the sliding seat, and the power output end of the slide cylinder is connected to an unlocking top plate for unlocking the elastic locking member.

2. The multi-station conveying mechanism according to claim 1, characterized in that, The clamping block has drive posts at both ends, and the upper end of the unlocking top plate has an arrowhead; the arrowhead extends between the two drive posts to open the clamping block.

3. The multi-station conveying mechanism according to claim 1, characterized in that, The two slide cylinders are respectively placed horizontally at the top of the side wall of the mounting slot; the power output end of the slide cylinder is connected to an "L"-shaped connecting block, the connecting block including a first side and a second side; The first side of the connecting block is connected to the power output end of the slide cylinder, the second side of the connecting block extends to the upper side of the slide cylinder, and the unlocking top plate is fixed to the upper end of the second side of the connecting block.

4. The multi-station conveying mechanism according to claim 1, characterized in that, The clamping turntable is an indexing plate with multiple equidistant sides, and each side is provided with the clamping component.

5. The multi-station conveying mechanism according to claim 1, characterized in that, The spring collet includes a clamping part and a driving part. The driving assembly presses the driving part of the spring collet to open the clamping part of the spring collet.

6. The multi-station conveying mechanism according to claim 5, characterized in that, The driving component includes: The mounting plate is located above the clamping turntable; At least two spring-driven cylinders are fixed to the mounting plate, with the power output ends of the spring-driven cylinders facing the feeding end and the discharging end of the packaging machine, respectively, and the power output ends of the spring-driven cylinders are connected to a drive rod.

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