Multi-station straw processing and forming equipment

Abstract

The present application relates to the technical field of Pasteur pipette manufacturing, and particularly relates to a multi-station pipette processing and forming device, which comprises a conveying device, a stretching device and a cutting device, the conveying device comprises a rotating disc, a bearing assembly arranged on the rotating disc and a limiting assembly, the stretching device, the cutting device and the limiting assembly are located on the same station, the rotating disc rotates intermittently and each time after rotation, one bearing assembly is sent to the position right below the limiting assembly, the bearing assembly is used for placing a semi-finished pipette, and the limiting assembly is used for limiting the semi-finished pipette on the bearing assembly; the stretching device comprises a base plate, a horizontal power mechanism and a clamping mechanism, the clamping mechanism is used for clamping a waste end of the semi-finished pipette, and the horizontal power mechanism can drive the base plate to move towards and away from the bearing assembly; the cutting device comprises a cutting knife assembly, the cutting knife assembly comprises a knife seat, a cutter and a first vertical power mechanism, and the first vertical power mechanism can drive the cutter to move up and down for cutting.

Description

Technical Field

[0001] This invention relates to the field of Bass straw processing and manufacturing technology, specifically to a multi-station straw processing and forming equipment. Background Technology

[0002] Pasteur pipettes, also known as Pasteur pipettes, are disposable pipettes, typically made of transparent polyethylene, a high-molecular-weight material that can be sterilized by gamma rays. They are ideal liquid carriers in cell experiments, clinical trials, and other experiments. Due to their polyethylene composition, they possess high permeability and flexibility, allowing them to be bent at any angle, making them widely applicable. They are primarily used for the aspiration, transfer, or transport of small amounts of liquid in cell experiments, clinical trials, and cloning experiments. The tube has a hollow sac for easy mixing of solvents, pharmaceuticals, and cells. The tube is translucent and bright white, with ideal liquid flow and high controllability; it can be used in liquid nitrogen environments. Its slender, flexible, and bendable body facilitates the insertion and removal of micro-volume or special containers; the small tip ensures repeatable drops; and the end can be heat-sealed for convenient liquid transport.

[0003] Currently, blow molding is commonly used in the industry to manufacture Pasteur straws. For example, the applicant's earlier patent application, publication number CN113478785A, discloses a multi-station straw blow molding equipment and straw manufacturing method. The blow molding equipment includes an extruder and a forming module. The forming module includes a blowing mechanism and a forming die. The forming die is used to hold the raw material extruded by the extruder and transports the raw material to the lower end of the blowing mechanism to complete the blow molding into a semi-finished straw. After blow molding, the forming die detaches from the semi-finished straw. The forming module also includes a shearing die for holding the semi-finished straw after detachment from the forming die and for cutting the semi-finished straw within the shearing die. This patent first blow molds a semi-finished straw in the forming module. The end of the semi-finished straw away from the capsule is a discarded end, which is subsequently cut off to obtain the finished straw. The cutting process is also completed within the mold cavity. However, some straws require an additional stretching process on the finished product to lengthen and thin the tube, followed by cutting to remove the waste end and the portion of the tube connected to the waste end, resulting in a finished straw of a specified length, thus meeting the needs of some customers.

[0004] The aforementioned secondary processing to obtain a finished product is difficult to perform in the straw blow molding equipment of this patent because it requires additional stretching and cutting devices, and also takes time. Therefore, the applicant specifically designed equipment for secondary processing of straws to address this problem. The cutting process is eliminated in the aforementioned blow molding equipment, producing semi-finished straws with waste ends. These semi-finished straws are then collected and transported to the secondary processing equipment for further processing. After stretching the tube body, it is cut again, removing the waste ends and the portion of the tube connecting to the waste ends to obtain finished straws of different models. Specifically, the semi-finished straws produced by the aforementioned blow molding equipment after eliminating the cutting process have a tube body in the middle, with a hollow bladder and a waste end at each end. The semi-finished product needs to be stretched on the newly designed secondary processing equipment to cause plastic deformation and elongation of the tube body in the middle. Then, the tube body is cut, breaking the semi-finished product into two sections. The section with the hollow bladder is the finished straw, and the section with the waste end is waste material. Removing the waste material yields the finished straw. Summary of the Invention

[0005] This invention addresses the problems of the prior art by providing a multi-station straw processing and forming equipment, comprising a conveying device, a stretching device, and a cutting device. The conveying device includes a turntable, multiple support components arranged in a circumferential array on the turntable, and a limiting component located above the turntable. The stretching device, the cutting device, and the limiting component are located at the same station. The turntable rotates intermittently, and after each rotation, one support component is delivered directly below the limiting component. The support component is used to place semi-finished straws, and the limiting component is used to restrict the semi-finished straws onto the support component. The stretching device includes a base plate, a horizontal power mechanism connected to the base plate, and a clamping mechanism mounted on the base plate. The clamping mechanism is used to clamp the waste end of the semi-finished straw, and the horizontal power mechanism can drive the base plate to move towards and away from the support component. The cutting device includes a cutting blade assembly, which includes a blade holder, a cutting tool fixed to the lower side of the blade holder, and a first vertical power mechanism connected to the upper side of the blade holder. The first vertical power mechanism can drive the cutting tool to move up and down for cutting.

[0006] As a preferred embodiment of the present invention, the clamping mechanism includes two clamping components arranged symmetrically above and below each other. Each clamping component includes a second vertical power mechanism, a vertical guide rail, and a jaw that is slidably mounted on the vertical guide rail and connected to the second vertical power mechanism. The second vertical power mechanism can drive the two jaws to move towards each other and away from each other.

[0007] As a preferred embodiment of the present invention, the gripper includes a base plate, a clamping plate, and a clamping part. The base plate is slidably mounted on the vertical guide rail. The clamping plate is horizontal and fixedly connected to the base plate on the side closest to the base plate. The clamping part is connected to the side of the clamping plate away from the base plate. After the two grippers move toward each other, they abut against each other through the clamping part.

[0008] As a preferred embodiment of the present invention, the upper clamping part is provided with downward-facing upper clamping teeth, and the lower clamping part is provided with upward-facing lower clamping teeth. Both the upper clamping teeth and the lower clamping teeth are serrated and can mesh with each other.

[0009] As a preferred embodiment of the present invention, the distance between the two clamping parts is smaller than the distance between the two clamping plates, and the connection between the clamping part and the clamping plate has an inclined slope.

[0010] As a preferred embodiment of the present invention, the cutting device further includes a cutting groove assembly located directly below the cutting blade assembly. The cutting groove assembly includes a groove seat, a blade groove disposed on the upper side of the groove seat, and a third vertical power mechanism connected to the lower side of the groove seat. The third vertical power mechanism can drive the groove seat to move up and down. The blade groove corresponds vertically to the cutting blade, and the cutting blade can enter the blade groove.

[0011] As a preferred embodiment of the present invention, it further includes a waste removal device, which includes a compressed air bottle, a compressed air pipe connected to the compressed air bottle, and a nozzle disposed at the end of the compressed air pipe, the nozzle being aimed at the area between the two grippers.

[0012] As a preferred embodiment of the present invention, the waste removal device further includes a collection hopper disposed on the side of the clamping mechanism away from the nozzle, the nozzle pointing towards the collection hopper, the nozzle being able to blow away the area between the two clamps, and the collection hopper being used to receive the waste that has been blown away.

[0013] As a preferred embodiment of the present invention, it further includes a material picking device, which includes a movable base and two upper and lower material picking plates disposed on the movable base and a material picking power mechanism. The material picking plates are provided with material picking grooves for matching and fitting with the straw body. The material picking power mechanism can drive the two material picking plates to move towards and away from each other in the vertical direction. The movable base can move towards and away from the turntable.

[0014] The supporting component includes a supporting plate with a supporting groove group on its upper side. The supporting groove group includes a supporting bladder groove, a supporting tube groove, and a semi-conical supporting blocking groove connecting the two. The width of the supporting bladder groove is greater than the width of the supporting tube groove. The supporting bladder groove is used for the placement of the straw bladder body, the supporting tube groove is used for the placement of the straw tube body, and the supporting blocking groove is used for the tapered variable cross-section portion between the straw bladder body and the tube body to abut against each other. The limiting component includes a liftable pressure plate with a pressing tube groove on its lower side. The pressing tube groove corresponds vertically to the supporting tube groove and is used to engage and press down on the tube body from top to bottom.

[0015] Beneficial effects: The multi-station straw processing and forming equipment of the present invention is aimed at the above-mentioned type of semi-finished straws. It uses the characteristic that the diameter of the straw's bladder and tube body is inconsistent to restrict it, and then stretches and cuts it to obtain the finished straw. The restricting component defines the position of one end of the straw bladder, the stretching device determines the stretching length, and the cutting device determines the cutting position. The process is simple and fast, the equipment itself has low cost, high processing accuracy, high quality of finished straws, and high processing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the conveying device; Figure 2 A schematic diagram of the specific structure of the supporting and limiting components; Figure 3 This is a schematic diagram showing semi-finished straws placed on a support plate. Figure 4 A schematic diagram showing how the limiting component and the supporting component together restrain the semi-finished straw; Figure 5 A schematic diagram showing the arrangement of the load-bearing components on the turntable; Figure 6 This is a schematic diagram of the stretching device and the cutting device. Figure 7 This is a schematic diagram of the clamping assembly, the cutting blade assembly, and the cutting groove assembly; Figure 8 This is a schematic diagram of the gripper structure; Figure 9 This is a schematic diagram of a waste removal device. Detailed Implementation

[0017] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0018] Example 1:The multi-station straw conveying device of the present invention is used in the process of stretching and cutting semi-finished straws. The semi-finished straws are structured with a tube body 82 in the middle and hollow bladders 81 and waste ends 83 at both ends. The processing technology is as follows: first, the bladders 81 and tube body 82 of the semi-finished straw are confined on the conveying device, and the waste ends 83 of the semi-finished straw and the part of the tube body 82 connected to the waste ends 83 extend outside the conveying device. Then, the waste ends 83 are clamped and stretched to elongate the tube body 82. Then, the tube body 82 is cut, and finally, the finished straws and waste materials are separated. Then, the conveying device transports the finished straws remaining on it to other stations. The conveying device of this embodiment is for the above process, so it needs to be able to ensure the confinement of the semi-finished straws, so that the straws are always kept in a specific position on the conveying device during the stretching, cutting and conveying process, to ensure their positional accuracy, thereby ensuring the processing quality of each process. This invention discloses a multi-station straw conveying device, comprising a turntable 1, multiple support components 2 arranged in a circumferential array on the turntable 1, and a limiting component 3 located above the turntable 1. The turntable 1 rotates intermittently, and after each rotation, one support component 2 is delivered directly below the limiting component 3. Each support component 2 includes a support plate 21, and a support groove group is formed on the upper side of the support plate 21. The support groove group includes a support pocket groove 24, a support tube groove 22, and a semi-conical support blocking groove 23 connecting the two. The width of 24 is greater than the width of the bearing groove 22. The bearing groove 24 is used for the placement of the straw body 81. The bearing groove 22 is used for the placement of the straw body 82. The bearing blocking groove 23 is used for the tapered variable cross-section portion between the straw body 81 and the straw body 82 to abut. The limiting component 3 includes a liftable pressure plate 31. The pressure plate 31 has a pressing groove 32 on its lower side. The pressing groove 32 corresponds vertically to the bearing groove 22. The pressing groove 32 is used to fit and press down on the straw body 82 from top to bottom. Multiple carrier components 2 are arranged in a circular array around the rotation center axis of turntable 1. Turntable 1 rotates intermittently. Equipment corresponding to different processes is set around turntable 1. The intermittent rotation of turntable 1 allows carrier components 2 to pass through different process equipment in sequence, and they stop each time they pass to allow processing time, so that multiple workstations can operate at the same time and improve efficiency. The limiting component 3 corresponds to the workstation of stretching and cutting. So when the carrier component 2 runs under the limiting component 3 and stops, the limiting component 3 and the carrier component 2 together restrict the part of the semi-finished straw away from the waste end 83. After the waste end 83 is pulled outward, the tube body 82 of the straw is stretched and then cut, so as to obtain the finished straw still on the carrier component 2 and the removed waste material.The supporting component 2 and the limiting component 3 utilize the shape of the semi-finished straw itself to limit it. Specifically, the portion of the bladder 81 connecting the bladder 81 to the tube 82 of the semi-finished straw is placed on the supporting component 2, and the diameter of the bladder 81 is larger than the diameter of the tube 82. A tapered variable cross-section portion between the bladder 81 and the tube 82 is also placed on the supporting component 2. The supporting bladder groove 24 in the supporting groove assembly matches the shape of the straw bladder 81, the supporting tube groove 22 matches the shape of the straw tube 82, and the supporting blocking groove 23 matches the shape of the tapered variable cross-section portion of the straw. Of course, the supporting groove assembly does not completely enclose the outer circumference of the straw, but when the straw is placed on the supporting groove assembly, the axial displacement of the straw can be limited by the supporting groove assembly. Especially during stretching, the discarded end 83 of the semi-finished straw is pulled away from the bladder 81. As the tube body 82 is stretched, the entire straw tends to displace in the same direction. However, the diameter of the bladder 81 is larger than that of the tube body 82, so it cannot enter the bearing groove 22 axially and is therefore restricted. Furthermore, the pressure plate 31 in the restricting component 3 presses down on the bearing plate 21, causing the pressure groove 32 to match and fit with the tube body 82 of the straw. The pressure groove 32 and the bearing groove 22 correspond vertically, so the pressure groove 32 and the bearing groove 22 together clamp the tube body 82 of the straw, thus fully restricting the displacement of the straw in all directions except its own axial direction, ensuring the positional accuracy of the straw. In the axial direction of the straw, since the bladder 81 also cannot enter the pressure groove 32 axially, the pressure plate 31 can also block the axial displacement of the straw when it is stretched, further improving the positional accuracy of the straw on the bearing plate 21.

[0019] When the straw is stretched, the bearing groove group restricts its displacement. The force during blocking is mainly generated between the bearing blocking groove 23 and the tapered variable cross section of the straw. In order to enable the pressure plate 31 to play an auxiliary blocking role as much as possible, it is preferable that the length of the lower pressure tube groove 32 is the same as the length of the bearing tube groove 22 and they are vertically aligned. In this way, the tapered variable cross section of the straw can abut against the side of the pressure plate 31 near the straw body 81, so that the pressure plate 31 can play a blocking role against the straw. Furthermore, in this embodiment, the cross-sectional profiles of both the supporting groove 22 and the pressing groove 32 are preferably semi-circular with the same radius. This way, when the pressure plate 31 presses onto the supporting plate 21, the pressing groove 32 and the supporting groove 22 together form a complete circular cavity, which is compatible with the straw body 82, completely enclosing and constricting it, thus improving the restriction effect on the straw body 82. Moreover, after the pressure plate 31 presses onto the supporting plate 21, the pressing groove 32 cannot continue downwards, and the straw body 82 itself will not be squeezed and deformed by the pressing groove 32, avoiding any impact on the stretching and forming quality of the straw body 82. The semi-circular shape of both the pressing groove 32 and the supporting groove 22 also facilitates processing and reduces manufacturing costs.

[0020] The pressure plate 31 blocks the tapered variable cross-section of the straw. If the side of the pressure plate 31 near the straw body 81 is a vertical flat surface, the part of the pressure plate 31 that contacts the tapered variable cross-section is the edge of the lower pressure groove 32, which is relatively sharp and may damage the tapered variable cross-section of the straw. Therefore, in this embodiment, it is preferable that the pressure plate 31 extends a first limiting part 311 from the side near the supporting groove 24. The first limiting part 311 has a semi-conical lower pressure blocking groove 33. The lower pressure blocking groove 33 corresponds vertically to the supporting blocking groove 23 and communicates with the lower pressure groove 32. The lower pressure blocking groove 33 is used for the tapered variable cross-section between the straw body 81 and the tube body 82 to abut. The lower pressure blocking groove 33 matches and abuts the tapered variable cross-section of the straw, and there is a surface-to-surface contact between them, which will not damage the straw. Moreover, the contact area is large, which improves the blocking effect. Furthermore, preferably, a second limiting part 312 extends from the side of the first limiting part 311 near the supporting bladder groove 24. The second limiting part 312 has a pressing bladder groove 34, which corresponds vertically to the supporting bladder groove 24 and communicates with the pressing blocking groove 33. When the pressure plate 31 presses against the supporting plate 21, the pressing bladder groove 34 presses against the straw body 81. The pressing bladder groove 34 and the supporting bladder groove 24 together clamp the straw body 81, further improving the restriction effect on the straw. In this embodiment, the cross-sectional profiles of the pressing bladder groove 34 and the supporting bladder groove 24 are both semi-circular with the same radius.

[0021] The force during blocking is mainly on the supporting blocking groove 23 and the pressing blocking groove 33. However, the supporting plate 21 and the pressure plate 31 are rigid structures, which are prone to damage to the surface of the straw under force. Therefore, it is preferable that the supporting blocking groove 23 and the pressing blocking groove 33 are covered with a flexible protective layer, such as rubber or cotton. Initially, the semi-finished straws need to be loaded onto the supporting component 2. Currently, manual loading is mainly used. Because the capsule 81 is relatively large, it is easy to align and place it into the supporting capsule groove 24. Therefore, when loading, the operator usually first puts one end of the straw capsule 81 into the supporting capsule groove 24, and then puts the tube body 82 into the supporting tube groove 22. This loading operation is faster. To further improve the feeding speed, in this embodiment, the supporting assembly 2 preferably includes a limiting plate 25 fixedly connected to the upper side of the supporting plate 21. The portion of the limiting plate 25 near the supporting groove group is suspended above the supporting bladder groove 24. The portion of the limiting plate 25 near the supporting groove group corresponds to the portion of the supporting bladder groove 24 away from the supporting tube groove 22. The pressing bladder groove 34 corresponds to the portion of the supporting bladder groove 24 near the supporting tube groove 22. The limiting plate 25 is used to press down the end of the straw bladder 81 away from the tube 82. During feeding, the limiting plate is suspended above the portion of the supporting bladder groove 24 away from the supporting tube groove 22. 25, meaning this part is restricted both vertically. During loading, the straw bag 81 is directly aligned with this position and inserted into it. The limiting plate 25 can assist the straw bag 81 to quickly reach its position, and after reaching its position, the limiting plate 25 presses down on the straw bag 81, so that the straw is initially restricted vertically, which makes it easier for the straw body 82 to be placed into the corresponding carrier tube groove 22, thus improving the loading efficiency. Moreover, the limiting plate 25 can improve the restriction effect of the carrier component 2 on the straw. When the straw is transported with the turntable 1, it can improve the stability of the straw on the carrier component 2, ensure the positional accuracy of the straw on the carrier component 2, and thus ensure the processing quality of each process.

[0022] In this embodiment, the supporting plate 21 preferably has multiple supporting groove groups arranged side by side, and the pressure plate 31 has multiple pressure tube grooves 32, pressure blocking grooves 33, and pressure bladder grooves 34 correspondingly arranged. Each supporting groove group corresponds to one set of pressure tube grooves 32, pressure blocking grooves 33, and pressure bladder grooves 34, so that multiple semi-finished suction tubes can be placed on such a supporting component 2, improving the conveying efficiency. In this embodiment, the limiting component 3 also includes a lifting mechanism 36 and a mounting plate 35. The upper side of the mounting plate 35 is connected to the lifting mechanism 36, and the lower side is fixedly connected to the pressure plate 31. The lifting mechanism 36 can drive the mounting plate 35 to move up and down. The lifting mechanism 36 can be a commonly used mechanism such as an electric actuator or a hydraulic cylinder.

[0023] The present invention provides a multi-station straw processing and forming equipment, including the multi-station straw conveying device, and further including a stretching device 4 and a cutting device 5. The stretching device 4 is used to stretch and form the straw, and the cutting device 5 is used to cut the straw into finished segments and waste segments.

[0024] Example 2: This invention discloses a multi-station straw processing and forming equipment, comprising a conveying device, a stretching device 4, and a cutting device 5. The conveying device includes a turntable 1, multiple bearing components 2 arranged in a circumferential array on the turntable 1, and a limiting component 3 located above the turntable 1. The stretching device 4, the cutting device 5, and the limiting component 3 are located at the same station. The turntable 1 rotates intermittently, and after each rotation, one bearing component 2 is delivered directly below the limiting component 3. The bearing component 2 is used to place semi-finished straws, and the limiting component 3 is used to restrain the semi-finished straws on the bearing component 2. The stretching device... The 4 includes a substrate 42, a horizontal power mechanism 41 connected to the substrate 42, and a clamping mechanism mounted on the substrate 42. The clamping mechanism is used to clamp the waste end 83 of the semi-finished straw. The horizontal power mechanism 41 can drive the substrate 42 to move towards and away from the support assembly 2. The cutting device 5 includes a cutting blade assembly 51. The cutting blade assembly 51 includes a blade holder 512, a cutting blade 511 fixed on the lower side of the blade holder 512, and a first vertical power mechanism 513 connected to the upper side of the blade holder 512. The first vertical power mechanism 513 can drive the cutting blade 511 to move up and down to cut. The semi-finished straw targeted by this invention has a structure with a tube body 82 in the middle and hollow capsules 81 and waste ends 83 at both ends. The processing technology is as follows: first, the capsules 81 and tube body 82 of the semi-finished straw are restricted on a conveying device. The waste end 83 of the semi-finished straw and the part of the tube body 82 connected to the waste end 83 extend outside the conveying device. Then, the stretching device 4 clamps the waste end 83 and stretches it to lengthen the tube body 82. Then, the cutting device 5 cuts the tube body 82, finally obtaining the finished straw and waste material that are separated from each other. Then, the turntable 1 drives the carrying component 2 to transport the finished straw remaining on it to the next station.The specific processing procedure is as follows: When the turntable 1 sends a carrier component 2 to below the limiting component 3, the limiting component 3 moves downward and acts on the carrier component 2, restricting the capsule 81 and part of the tube 82 of the semi-finished straw to the carrier component 2, preventing the semi-finished straw from displacing relative to the carrier component 2. At this time, the waste end 83 of the semi-finished straw and the part of the tube 82 connected to the waste end 83 extend beyond the carrier component 2 and the limiting component 3. The stretching device 4 and the cutting device 5 are both set corresponding to the limiting component 3 and are both located on the side of the waste end 83 of the straw. The horizontal power mechanism 41 is activated to drive the base plate 42 to move towards the limiting component 3. At this time, the clamping... The holding mechanism is in the open state. When it travels to the waste end 83 of the straw and enters the clamping mechanism, it stops. Then, the clamping mechanism clamps the waste end 83. Then, the horizontal power mechanism 41 is started to drive the substrate 42 away from the limiting component 3 to stretch the straw body 82. After the straw is stretched and formed, the horizontal power mechanism 41 stops running. Then, the cutting device 5 located between the stretching device 4 and the limiting component 3 is started. The first vertical power mechanism 513 drives the knife holder 512 and the cutting tool 511 to move in the up and down direction to cut the tube body 82, dividing the semi-finished tube body 82 into finished section and waste section. The finished section remains on the bearing component 2, and the waste section remains on the clamping mechanism. The multi-station straw processing and forming equipment of the present invention is aimed at the above-mentioned type of semi-finished straws. It uses the characteristic that the diameter of the straw's own bladder 81 and tube 82 is different to restrict it, and then stretches and cuts to obtain the finished straw. The restricting component 3 limits the position of one end of the straw bladder 81, the stretching device 4 determines the stretching length, and the cutting device 5 determines the cutting position. The process is simple and fast, the equipment itself has low cost, high processing accuracy, high quality of finished straws, and high processing efficiency.

[0025] In this embodiment, the clamping mechanism includes two clamping components 43 arranged symmetrically at different heights. Each clamping component 43 includes a second vertical power mechanism 433, a vertical guide rail 432, and grippers 431 slidably mounted on the vertical guide rail 432 and connected to the second vertical power mechanism 433. The second vertical power mechanism 433 can drive the two grippers 431 to move towards each other and away from each other. In the initial state, there is a gap between the two grippers 431. In use, the upper second vertical power mechanism 433 drives the upper gripper 431 to move downward, and the lower second vertical power mechanism 433 drives the lower gripper 431 to move upward, so that the two grippers 431 move closer to each other until the waste end 83 of the straw is clamped. The clamping mechanism clamps the straw from top to bottom to take into account the situation where multiple semi-finished straws can be placed side by side on the bearing component 2, and multiple semi-finished straws can be clamped at the same time to improve processing efficiency.

[0026] In this embodiment, the gripper 431 includes a base plate 4311, a clamping plate 4312, and a clamping part 4313. The base plate 4311 is slidably mounted on the vertical guide rail 432. The clamping plate 4312 is horizontal and fixedly connected to the base plate 4311 on one side near the base plate 4311. The clamping plate 4312 extends horizontally from the base plate 4311 toward the limiting component 3. The clamping part 4313 is connected to the clamping plate 4312 away from the base plate 4311. On one side, that is, the side closest to the limiting component 3, the two grippers 431 move towards each other and then abut against each other through the clamping part 4313, and the clamping part 4313 completes the clamping of the waste end 83 of the straw; the clamping end is the part of the clamping mechanism closest to the limiting component 3, which can reduce the travel of the substrate 42 and improve the processing efficiency, while the clamping plate 4312 itself has an extended length, which can temporarily support the waste material and prevent the cut waste material from falling randomly and affecting the operation of the equipment. Furthermore, preferably, the upper clamping part 4313 is provided with downward-facing upper clamping teeth 4314, and the lower clamping part 4313 is provided with upward-facing lower clamping teeth 4315. Both the upper clamping teeth 4314 and the lower clamping teeth 4315 are serrated and can interlock. When stretching and forming the straw, both the capsule end 81 and the waste end 83 need to be fully restricted. Slippage at either end will cause incomplete stretching and result in defective products. The capsule end 81 can be fully restricted by the restricting component 3 and the supporting component 2. After the upper clamping teeth 4314 and the lower clamping teeth 4315 clamp and interlock with the waste end 83, the restriction on the waste end 83 is also effectively improved, preventing the waste end 83 from slipping relative to the clamping part 4313 and ensuring the stretching quality.If the upper and lower clamping plates 4312 also come into contact with each other when the clamping part 4313 achieves clamping, the tendency of the two clamping parts 4313 to move closer together is limited by the clamping plates 4312, resulting in a definite upper limit to the maximum clamping force of the clamping part 4313, and the clamping effect is generally poor. Therefore, it is preferable that the distance between the two clamping parts 4313 is smaller than the distance between the two clamping plates 4312, and that the connection between the clamping part 4313 and the clamping plate 4312 has an inclined slope 4316, that is, the clamping part 4313 and the clamping plate 4312 are not at the same height. When the two clamping parts 4313 abut against each other to achieve clamping, there is still a distance between the upper and lower clamping plates 4312. In this way, as long as the second vertical power mechanism 433 continues to push the two clamping plates 4312 closer together, the two grippers 431 will still have mutual clamping force. The closer proximity increases the clamping force between the clamping parts 4313, providing a clamping effect on the waste end 83 of the straw and further preventing the waste end 83 from slipping relative to the clamping part 4313. Of course, this places higher demands on the structural strength of the clamping plate 4312 and the clamping part 4313. In this embodiment, the clamping plate 4312 and the clamping part 4313 are integrally formed steel structures with high structural strength. Due to the height difference, an inclined slope is formed at the connection between the clamping part 4313 and the clamping plate 4312. When the two clamps 431 are released, the waste on the lower clamping part 4313 slides down the slope onto the clamping plate 4312 instead of scattering to other places. This avoids the waste affecting the normal operation of the equipment and the difficulty of subsequent cleaning. The waste is temporarily stored on the clamping plate 4312, which facilitates centralized cleaning and collection later.

[0027] In this embodiment, the straw is relatively soft and easily deformed. When the stretching is completed and cutting is performed, the elongated tube 82 to be cut is in a suspended tension state. However, the tube 82 still has the ability to continue to deform. If the tension of the tube 82 is insufficient to cut itself at the moment the cutter 511 contacts it, the tube 82 will bend and further stretch and deform under the push of the cutter 511. During this process, the tension of the tube 82 is increased until it can be cut by the cutter 511. Once the above situation occurs, the tube 82 will be overstretched, which will seriously affect the quality of the finished straw. To avoid the above situation, in this embodiment, the cutting device 5 preferably further includes a cutting groove assembly 52 located directly below the cutting blade assembly 51. The cutting groove assembly 52 includes a groove seat 522, a blade groove 521 disposed on the upper side of the groove seat 522, and a third vertical power mechanism 523 connected to the lower side of the groove seat 522. The third vertical power mechanism 523 can drive the groove seat 522 to move up and down. The blade groove 521 corresponds vertically to the blade 511, and the blade 511 can enter the blade groove 521. Thus, during cutting, the third vertical power mechanism 523 first drives the groove seat 522 to move upward until the upper side of the groove seat 522 contacts the straw body 82, and then the first vertical... The direct-drive mechanism 513 drives the cutter holder 512 downward, causing the cutter 511 to move downward until it cuts the tube body 82 and enters the cutter groove 521. The groove 522 blocks the tube body 82, allowing the cutter 511 to directly cut the tube body 82, avoiding secondary stretching of the tube body 82 and ensuring the quality of the finished straw. The cutter groove 521 allows the cutter 511 to enter after cutting, providing a buffer stroke for the cutter 511 to decelerate to a stop, avoiding direct impact of the cutter 511 on the groove 522, and improving the service life of the cutter 511. Moreover, the cutter groove 521 can help position the cutter 511 and improve cutting accuracy. If it is found that the cutter 511 cannot enter the cutter groove 521 during cutting, it proves that the cutting position accuracy needs to be adjusted.

[0028] In a further improvement, the multi-station straw processing and forming equipment of the present invention preferably includes a waste removal device 6. The waste removal device 6 includes a compressed air bottle 61, a compressed air pipe 62 connected to the compressed air bottle 61, and a nozzle 63 disposed at the end of the compressed air pipe 62. The nozzle 63 is aligned with the area between the two grippers 431. In this embodiment, the clamping mechanism is aligned with the limiting component 3 along the radial direction of the turntable 1. The clamping plate 4312 extends from the bottom plate 4311 toward the limiting component 3 along this radial direction. The extension direction of the tube body 82 of the semi-finished straw is also along this radial direction. The space between the two clamping plates 4312 is through in a horizontal direction perpendicular to this radial direction. The nozzle 63 is disposed on one side of the clamping mechanism along this horizontal direction and blows towards the other side, so that the waste leaves the clamping mechanism from the other side. After a cut is completed, the waste material remains on the clamping part 4313 or slides onto the clamping plate 4312, i.e., it remains between the two grippers 431. At this time, the nozzle 63 is opened to spray compressed air into the area between the two grippers 431, blowing the waste material out in a predetermined direction and clearing the area between the grippers 431, preparing for the next stretching and cutting. The blown-out waste material falls in a predetermined direction, and its landing position is predictable, making it easy to collect. Further, preferably, the waste removal device 6 also includes a collection hopper 64 disposed on the side of the clamping mechanism away from the nozzle 63, i.e., the other side in the horizontal direction. The nozzle 63 points towards the collection hopper 64. The nozzle 63 can blow the area between the two grippers 431, and the collection hopper 64 is used to receive the blown-out waste material and collect it centrally.

[0029] After the semi-finished straws on a certain carrier component 2 undergo the above-mentioned stretching and cutting processes, the finished straws remain on the carrier component 2. At this time, the turntable 1 rotates to send the carrier component 2 to the next station for collecting the finished straws, and sends the next carrier component 2 with semi-finished straws to the bottom of the limiting component 3. This embodiment also includes a material picking device, which is located at the station below the station where the stretching device 4 is located. The material picking device includes a movable seat and two upper and lower picking plates and a picking power mechanism set on the movable seat. The picking power mechanism can drive the two picking plates to move towards and away from each other in the vertical direction. The picking plates are provided with picking grooves, which are used to match and fit with the straw body 82. The movable seat can move towards and away from the turntable 1. The movable seat can move radially towards and away from the corresponding support component 2 along the turntable 1. It has a power mechanism, which drives the upper and lower picking plates to clamp the tube body 82 of the finished straw. After clamping, the movable seat moves away from the turntable 1, causing the finished straw to leave the support component 2. At this time, the tube body 81 of the finished straw is suspended in the air. Then, the two picking plates are released from each other, and one end of the tube body 81 falls down, causing the entire finished straw to fall down, thus realizing the collection of the finished straw. The picking plates have picking grooves that are adapted to the straw body 82. The picking grooves on the two picking plates are vertically aligned and can work together to hold the straw body 82.

[0030] The conveying device described in this embodiment adopts the conveying device in Embodiment 1. The bearing assembly 2 includes a bearing plate 21. The upper side of the bearing plate 21 is provided with a bearing groove group. The bearing groove group includes a bearing bladder groove 24, a bearing tube groove 22, and a semi-conical bearing blocking groove 23 connected between the two. The width of the bearing bladder groove 24 is greater than the width of the bearing tube groove 22. The bearing bladder groove 24 is used for the placement of the bladder body 81 of the straw. The bearing tube groove 22 is used for the placement of the tube body 82 of the straw. The bearing blocking groove 23 is used for the tapered variable cross-section portion between the straw bladder body 81 and the tube body 82 to abut. The limiting assembly 3 includes a liftable pressure plate 31. The lower side of the pressure plate 31 is provided with a downward pressing tube groove 32. The downward pressing tube groove 32 corresponds vertically to the bearing tube groove 22. The downward pressing tube groove 32 is used to cooperate with and press down the tube body 82 from top to bottom.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-station straw processing and forming equipment, characterized in that, The device includes a conveying device, a stretching device (4), and a cutting device (5). The conveying device includes a turntable (1), multiple circumferentially arrayed support components (2) arranged on the turntable (1), and a limiting component (3) located above the turntable (1). The stretching device (4), the cutting device (5), and the limiting component (3) are located at the same workstation. The turntable (1) rotates intermittently, and after each rotation, it sends one of the support components (2) directly below the limiting component (3). The support component (2) is used to place the semi-finished straws, and the limiting component (3) is used to limit the semi-finished straws on the support component (2). The stretching device (4) includes a base plate (42). The cutting device (5) includes a horizontal power mechanism (41) connected to the substrate (42) and a clamping mechanism mounted on the substrate (42). The clamping mechanism is used to clamp the waste end of the semi-finished straw. The horizontal power mechanism (41) can drive the substrate (42) to move toward and away from the support assembly (2). The cutting device (5) includes a cutting blade assembly (51). The cutting blade assembly (51) includes a blade holder (512), a blade (511) fixed on the lower side of the blade holder (512), and a first vertical power mechanism (513) connected to the upper side of the blade holder (512). The first vertical power mechanism (513) can drive the blade (511) to move up and down to cut. The supporting component (2) includes a supporting plate (21). The upper side of the supporting plate (21) is provided with a supporting groove group. The supporting groove group includes a supporting bladder groove (24), a supporting tube groove (22), and a semi-conical supporting blocking groove (23) connected between the two. The width of the supporting bladder groove (24) is greater than the width of the supporting tube groove (22). The supporting bladder groove (24) is used for the bladder body of the straw to be placed. The supporting tube groove (22) is used for the tube body of the straw to be placed. The supporting blocking groove (23) is used for the conical variable cross section between the straw bladder body and the tube body to abut. The limiting component (3) includes a liftable pressure plate (31). The lower side of the pressure plate (31) is provided with a pressing tube groove (32). The pressing tube groove (32) corresponds vertically to the supporting tube groove (22). The pressing tube groove (32) is used to fit and press the tube body from top to bottom.

2. The multi-station straw processing and forming equipment according to claim 1, characterized in that, The clamping mechanism includes two clamping components (43) arranged symmetrically above and below each other. Each clamping component (43) includes a second vertical power mechanism (433), a vertical guide rail (432), and a jaw (431) slidably mounted on the vertical guide rail (432) and connected to the second vertical power mechanism (433). The second vertical power mechanism (433) can drive the two jaws (431) to move towards each other and away from each other.

3. The multi-station straw processing and forming equipment according to claim 2, characterized in that, The gripper (431) includes a base plate (4311), a clamping plate (4312), and a clamping part (4313). The base plate (4311) is slidably mounted on the vertical guide rail (432). The clamping plate (4312) is horizontal and fixedly connected to the base plate (4311) on the side closer to the base plate (4311). The clamping part (4313) is connected to the side of the clamping plate (4312) away from the base plate (4311). After the two grippers (431) move towards each other, they abut against each other through the clamping part (4313).

4. The multi-station straw processing and forming equipment according to claim 3, characterized in that, The upper clamping part (4313) is provided with a downward-facing upper clamping tooth (4314), and the lower clamping part (4313) is provided with an upward-facing lower clamping tooth (4315). Both the upper clamping tooth (4314) and the lower clamping tooth (4315) are serrated and can interlock.

5. The multi-station straw processing and forming equipment according to claim 4, characterized in that, The distance between the two clamping parts (4313) is smaller than the distance between the two clamping plates (4312), and the connection between the clamping part (4313) and the clamping plate (4312) has an inclined slope (4316).

6. The multi-station straw processing and forming equipment according to claim 1, characterized in that, The cutting device (5) further includes a cutting groove assembly (52) located directly below the cutting blade assembly (51). The cutting groove assembly (52) includes a groove seat (522), a blade groove (521) disposed on the upper side of the groove seat (522), and a third vertical power mechanism (523) connected to the lower side of the groove seat (522). The third vertical power mechanism (523) can drive the groove seat (522) to move up and down. The blade groove (521) corresponds vertically to the cutting tool (511), and the cutting tool (511) can enter the blade groove (521).

7. The multi-station straw processing and forming equipment according to claim 3, characterized in that, It also includes a waste removal device (6), which includes a compressed air cylinder (61), a compressed air pipe (62) connected to the compressed air cylinder (61), and a nozzle (63) disposed at the end of the compressed air pipe (62), the nozzle (63) being aligned with the area between the two grippers (431).

8. The multi-station straw processing and forming equipment according to claim 7, characterized in that, The waste removal device (6) further includes a collection hopper (64) disposed on the side of the clamping mechanism away from the nozzle (63), the nozzle (63) pointing towards the collection hopper (64), the nozzle (63) being able to blow the area between the two clamps (431), and the collection hopper (64) being used to receive the waste that is blown off.

9. The multi-station straw processing and forming equipment according to claim 1, characterized in that, It also includes a material picking device, which includes a movable base and two material picking plates and a material picking power mechanism disposed on the movable base. The material picking plates are provided with material picking slots for matching and fitting with the straw body. The material picking power mechanism can drive the two material picking plates to move towards and away from each other in the vertical direction. The movable base can move towards and away from the turntable.

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