An electronic tray packaging apparatus

Abstract

The present disclosure relates to an electronic tray packaging device, comprising: a base material supply assembly integrated on a mounting base plate, including a feeding driving wheel and a feeding motor; a tape supply assembly, including a tape pulling cylinder and a tensioning and dispensing wheel set; a material pulling assembly, including a guide rail assembly, a material pulling wheel and a material pulling drive; a base material cutting mechanism located at the rear end of the material pulling assembly; a tape cutting mechanism located between the base material cutting mechanism and the material pulling assembly; a material taking manipulator with a rotatable negative pressure suction cup at the end; a power device including a rotation driving power disc; a material head positioning device integrated on the power device; and a process transfer mechanism connected to a filling material tape winding station and a supporting material tape winding station. The packaging device ensures the stability and consistency of the tray packaging quality, each assembly is integrated on the mounting base plate, arranged compactly and reasonably, occupies small space, and constructs an integrated automatic packaging line, which is beneficial to the expansion of the length of the production line, and can meet the batch automatic production demand in combination with the tray feeding and discharging line.

Description

Technical Field

[0001] This disclosure relates to the field of packaging equipment technology, and more specifically, to an electronic tray packaging device. Background Technology

[0002] Carrier tape tray packaging is a common packaging method for electronic materials. Electronic materials are carried by carrier tape and then wound into trays to form electronic trays, which facilitates the storage, transportation, and rapid placement of electronic materials. When electronic trays are often not fully rolled or need to be transported over long distances, they usually need to be filled with filler tape. At the same time, in order to improve the strength of the tray packaging, a rigid material is usually set on the outside as a skeleton support to protect the materials inside the electronic tray. Therefore, it can be seen that the packaging process of electronic trays is long, and its packaging quality and efficiency directly affect the stability of subsequent production flow and material storage and transportation.

[0003] In existing technologies, most roll-up packaging is semi-automated, and the electronic material tray process is long with low equipment integration. It requires multiple dispersed intermediate devices, resulting in large equipment space occupation and the need for auxiliary transfer equipment, leading to low production efficiency. At the same time, there are several technical challenges in the electronic material tray packaging process, such as the difficulty of filling with low-toughness filler tape. When using roll-up filling, a certain length of tape needs to be attached to the end to fix the roll. As a result, the packaging equipment for electronic materials cannot be fully automated. Manual assistance is still required to complete packaging, cutting, and tray transfer processes, resulting in discontinuous process connections and efficiency bottlenecks, making it impossible to achieve integrated automated operation of the entire electronic material tray process.

[0004] In view of this, and in response to the above functional limitations, this design proposes an electronic tray packaging equipment that integrates the entire packaging process with an electronic tray, and features a compact structure, reasonable layout, and high operating efficiency.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this disclosure is to provide a tray clamping and rotating pick-and-place device, thereby overcoming, at least to some extent, one or more problems caused by the limitations and defects of related technologies.

[0007] According to one aspect of this disclosure, an electronic tray packaging device is provided. A filler tape winding station and a support tape winding station are sequentially arranged on a mounting base. A loading station located below the filler tape winding station and a unloading station located below the support tape winding station are respectively provided on both sides of the mounting base. A tray transfer path is established between the filler tape winding station and the support tape winding station via a process transfer mechanism. At least the following are provided on both the filler tape winding station and the support tape winding station: The base material supply assembly includes a feeding drive wheel and a feeding motor. The base material is wound around the feeding drive wheel, and the feeding motor drives the feeding drive wheel to rotate and convey the material. The tape feeding assembly includes a tape pulling cylinder and a tensioning and unloading wheel assembly. The tape is pulled and released by the tape pulling cylinder, tensioned by the tensioning and unloading wheel assembly, and a certain length of tape is attached to the end of the base material. The material pulling assembly includes a guide rail assembly, a material pulling wheel, and a material pulling drive. The guide rail assembly is provided with a chute, and the end of the chute has an upper opening. The base material passes through the chute and is pressed and pulled by the material pulling wheel that extends into the upper opening. The material pulling wheel is driven to rotate by the material pulling drive. The base material cutting mechanism, located at the rear end of the feeding assembly, is used for punching the base material; The tape cutting mechanism is located between the base material cutting mechanism and the material pulling assembly, and is used to cut the tape after it reaches the preset length. The pick-and-place robot is used to transfer material trays between the filler tape winding station and the loading station or the support tape winding station and the unloading station. The end of the pick-and-place robot is a rotatable negative pressure suction cup for negative pressure suction of the material tray. The power unit includes a drive power disk, which works in conjunction with a pick-and-place robot to clamp the material tray and rotate the material tray to wind up the base material through friction. The power unit and the pick-and-place robot are respectively set on both sides of the mounting base plate and are clamped through the docking holes opened on the mounting base plate. The material head positioning device, integrated into the power unit, is used to press the material tray to deform and clamp the material head of the base material. The tape feeding assembly and the base material feeding assembly are respectively located on the upper and lower sides of the pulling assembly. The pick-and-place robot of the filler tape winding station is located on the front side of the mounting substrate, and the pick-and-place robot of the support tape winding station is located on the rear side of the mounting substrate. The pulling directions of the pulling assembly of the filler tape winding station and the pulling assembly of the support tape winding station are opposite.

[0008] In an exemplary embodiment of this disclosure, the material roll is disposed below the feeding drive wheel, the guide rail assembly is disposed along the horizontal tangent direction of the upper edge of the feeding drive wheel, and the base material supply assembly further includes a feeding pressure roller and a guide block. The feeding pressure roller is located on the feeding side of the feeding drive wheel and is used to press the base material onto the feeding drive wheel. The guide block is disposed along the conveying path of the base material, is fixed on the mounting base plate, and is located at the front end of the feeding drive wheel, and is used to guide and adjust the base material.

[0009] In one exemplary embodiment of this disclosure, the base material at the filler tape winding station is the filler tape. The filler roll is equipped with an active unwinding mechanism for active unwinding. The active unwinding mechanism includes an unwinding drive, an active support wheel, a driven support wheel, and an unwinding detector. The active support wheel and the driven support wheel are parallel to the center line of the filler roll and are symmetrically arranged on both sides. They jointly support the edge of the filler roll. The active support wheel is driven by the unwinding drive to provide rotational power for unwinding the filler roll. The unwinding detector is located directly below the filler roll and is used to detect the loosening state of the filler tape and send the loosening signal to the feeding motor and the pulling drive.

[0010] In one exemplary embodiment of this disclosure, a pressure roller mechanism is further included for collecting the base material winding thickness. The pressure roller mechanism includes a pressure roller, a clamping cylinder, a flexible support structure, a mounting block, and a first position sensor. The clamping cylinder and the mounting block are respectively connected to the two ends of the flexible support structure. The pressure roller is mounted on the mounting block. The clamping cylinder drives the flexible support structure and the pressure roller to move radially synchronously to the initial thickness coordinate. The pressure roller presses against the base material on the material tray. Under the flexible support of the flexible support structure, the pressure roller and the mounting block move radially outward with the winding thickness. The first position sensor is mounted on the mounting base plate for collecting the position signal of the mounting block and sending it to the base material cutting mechanism and the material pulling drive.

[0011] In an exemplary embodiment of this disclosure, the base material cutting mechanism includes a cutting drive, a base material cutter, a vacuum slide, and a linkage seat. The cutting drive is used to drive the vacuum slide to rise and fall. The base material cutter is fixedly installed on the linkage seat. The vacuum slide is located at the rear end of the base material cutter and is used to press the base material after the punching point. It is slidably connected to a connecting column. The end of the connecting column is locked on the linkage seat, and the lower end is fixedly connected to the vacuum slide. A buffer spring is sleeved on the connecting column. The buffer spring is pressed between the linkage seat and the vacuum slide to buffer the punching action on the vacuum slide and apply elastic micro-pressure.

[0012] In one exemplary embodiment of this disclosure, the tensioning and unloading wheel assembly includes an unloading wheel, a pressing mechanism, a second position sensor, a resistance loading shaft, a fixed guide wheel, a vacuum slide, and a clearance guide wheel. The material roll is loaded on the resistance loading shaft, and the base material is guided to the vacuum slide via the unloading wheel, the fixed guide wheel, and the clearance guide wheel. The downward pressing of the vacuum slide adheres the adhesive tape on it to the surface of the base material. The pressing mechanism is located beside the fixed guide wheel and is used to press the base material on the fixed guide wheel to assist in material pulling. The unloading wheel is slidably mounted on the slide rail of the mounting base. When the base material on the fixed guide wheel is pressed, the unloading wheel, driven by the tape pulling cylinder directly above it, pulls the tape roll downward to release the tape. The unloading wheel tensions the tape by gravity and returns to its original position as the tape is wound up. A tape unloading position is provided on the slide rail, and the second position sensor is used to detect the arrival signal of the unloading wheel reaching the tape unloading position and send it to the tape pulling cylinder.

[0013] In one exemplary embodiment of this disclosure, the guide rail assembly includes a base material guide rail and a vacuum guide rail. The base material guide rail is used to pass through and guide the base material. The vacuum guide rail is located behind the base material guide rail. The top of the slide groove of the vacuum guide rail is provided with a plurality of vacuum suction holes along the material pulling direction. The vacuum suction holes are connected to the vacuum air path and are used to adsorb and position the tape before and after tape cutting. The base material guide rail is provided with a pressing opening to allow the vacuum slide to press, position, and adhere the tape. An installation gap is provided between the base material guide rail and the vacuum guide rail for installing the tape cutting mechanism. The bottom of the vacuum slide has a material pressing surface and a material receiving side with suction grooves. The bottom of the suction grooves has several suction holes for vacuum adsorption of the tape before and after tape cutting.

[0014] In one exemplary embodiment of this disclosure, the process transfer mechanism includes a transfer trough and a lifting mechanism. The transfer trough extends from the docking hole of the filler tape winding station to directly below the docking hole of the support tape winding station. The lifting mechanism includes a lifting block and a lifting drive. The lifting block is disposed at the bottom of the transfer trough directly below the support tape winding station. The lifting block is provided with an arc-shaped groove for positioning the material tray. The bottom of the transfer trough is a sloped bottom, which allows the material tray to be automatically rolled and transferred from the filler tape winding station to the arc-shaped groove. The lifting drive lifts and lowers the lifting block to lift the material tray in the arc-shaped groove to the clamping station. Two operating holes are provided through both sides of the transfer trough to allow space for a drive power plate or a negative pressure suction cup. In one exemplary embodiment of this disclosure, a second encoder is provided on the pressure roller, and an encoding wheel is provided on the feeding drive wheel. The encoding wheel is located in front of the feeding pressure roller. The two are rotatably connected to the mounting base plate by separate shafts. The included angle of the two shafts is set and they are connected by a connecting spring to achieve mutual self-pressurization. A first encoder is connected to the encoding wheel. A material shortage detector is also provided on the material conveying path. The material shortage detector is located at the front end of the guide block.

[0015] The exemplary embodiment of the present disclosure of the electronic tray packaging equipment integrates a base material supply component, a tape supply component, a pulling component, a base material cutting mechanism, a tape cutting mechanism, a picking robot, a power unit, a material head positioning device, and a process transfer mechanism on a mounting base plate, thus constructing an integrated automatic packaging line for the tray. The base material supply component realizes the stable supply of filling tape and support tape, the pulling component ensures accurate material delivery, the picking robot and the power component work together to complete the automatic feeding, fixing and winding drive of the tray, the tape supply component can automatically supply and adhere tape to a fixed length at the end of winding to secure the tail end of the base material and stabilize the tray winding, and the lifting component uses the tray's own weight to roll and complete the process transfer. The coordinated linkage of each component can complete the entire process without manual intervention, which not only greatly improves production efficiency, but also ensures the stability and consistency of the tray winding and packaging quality, and reduces the intensity of manual labor. The components of this packaging equipment are integrated and installed on a mounting base plate. The structure of each module is compact and reasonable, and the overall space occupied is small, which is conducive to the expansion of the production line length. Combined with the setting of material tray loading and unloading lines, it can meet the needs of batch automated production.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] The above and other features and advantages of this disclosure will become more apparent from the detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0018] Figure 1 A front view of the packaging equipment of this utility model is shown; Figure 2 A three-dimensional structural diagram of the packaging equipment of this utility model is shown from a frontal view. Figure 3 A three-dimensional structural diagram of the packaging equipment of this utility model is shown from a rear view. Figure 4 A three-dimensional structural diagram of the active feeding mechanism for the material roll of this utility model is shown; Figure 5 A front view of the base material supply assembly of this utility model is shown; Figure 6 A front view of the tape feeding assembly of this utility model is shown; Figure 7 A three-dimensional structural diagram of the tape feeding assembly of this utility model is shown; Figure 8 A three-dimensional structural diagram of the pressure roller assembly of this utility model is shown; Figure 9 A three-dimensional structural diagram of the picking and placing robot and power unit in the material picking state is shown; Figure 10 A cross-sectional structural diagram of the picking and placing device of this utility model is shown; Figure 11 A three-dimensional structural diagram of the rotating device of this utility model is shown; Figure 12 A cross-sectional structural diagram showing the coordinated operation of the pick-and-place device and the rotating device in the clamping state is shown. Figure 13 A three-dimensional structural diagram of the process transfer mechanism is shown; Figure 14 A three-dimensional view of the internal structure of the process transfer mechanism is shown.

[0019] Attached image labels: 010. Filler roll; 011. Filler strip; 020. Support roll; 021. Support strip; 030. Adhesive tape roll; 031. Adhesive tape; 040. Material tray; 100. Automatic roll feeding mechanism; 110. Feeding drive; 120. Active support wheel; 130. Feeding detector; 140. Driven support wheel; 200. Base material supply assembly; 210. Feeding drive wheel; 220. Feeding motor; 230. Feeding pressure roller; 240. First encoder; 250. Material shortage detector; 260. Guide block; 300. Adhesive tape feeding assembly; 310 320. Base material cutter; 330. Tape cutting mechanism; 340. Tape pulling cylinder; 350. Feeding wheel; 360. Fixed guide wheel; 370. Pressing mechanism; 380. Cutting drive; 381. Linkage seat; 382. Alternating guide wheel; 390. Vacuum slide; 391. Pressing plane; 392. Suction groove; 400. Pressing roller mechanism; 410. Pressing cylinder; 420. Flexible support structure; 430. Second encoder; 440. Pressing roller; 450. Mounting block; 460. First position sensor; 500. Pulling assembly; 510. Base material guide rail; 5 20. Vacuum guide rail; 530. Pulling roller; 540. Pulling drive; 600. Mounting base plate; 610. Docking hole; 700. Picking and placing robot; 710. Station switching drive; 711. Second position sensor; 720. Linear drive; 730. Negative pressure suction cup; 731. Panel plate; 732. Suction cup; 733. Back plate plate; 734. Air channel groove; 735. Support shaft; 7351. Mounting shaft section; 7352. Axial air hole; 7353. Positioning shaft section; 7354. Radial air hole; 736. Pneumatic connector; 800. Process transfer mechanism; 810. Transfer trough; 811. Operating hole; 812. Bottom of inclined trough; 820. Lifting drive; 830. Lifting block; 831. Positioning arc groove; 900. Power unit; 910. Drive power disc; 911. Guide center hole; 912. Clearance groove; 920. Third position sensor; 930. Gearbox; 940. Rotary drive; 950. Material head positioning device; 951. Positioning drive; 952. Fiber optic sensor array; 953. Guide ring; 954. Positioning rod; 955. Positioning pin; 956. Return spring; 957. Sliding bearing. Detailed Implementation Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0020] In this example embodiment, an electronic tray packaging device is provided, such as... Figures 1-14As shown, the mounting base 600 serves as a support foundation, on which a filler tape winding station and a support tape winding station are arranged in sequence. Parallel tray 040 loading lines and tray 040 unloading lines can be set on both sides of the mounting base 600, respectively. The tray 040 loading station is located below the filler tape winding station and is set on the tray 040 loading line. The tray 040 unloading station is located below the support tape winding station and is set on the unloading line. An automatic flow path for the tray 040 is established between the filler tape winding station and the support tape winding station through the process transfer mechanism 800. The winding principle of filler tape 011 is the same as that of support tape 021. Both the filler tape winding station and the support tape winding station should have at least the following: The base material supply assembly 200 refers to the filler tape 011 and the support tape 021. In this embodiment, the filler tape 011 is wound up to fill the material tray 040, and finally, the support tape 021 is wrapped on the outermost layer using the same winding method. The support tape 021 has high strength and a certain degree of flexibility. Figure 5 As shown, the base material supply assembly 200 includes a feeding drive wheel 210, a feeding motor 220, a guide block 260, a feeding pressure roller 230, and an encoder wheel. It is used to construct the base material conveying path, support the base material, and rotate to assist in the pulling and conveying of the base material. The filler strip 011 of the filler roll 010 or the support strip 021 of the support roll 020, located below, is led out and guided by the guide block 260 on the base material conveying path before being wound onto the feeding drive wheel 210. The direction of the feeding drive wheel 210 is changed, causing the filler strip 011 and support strip 021 to be horizontally and tangentially led out from the top of the feeding drive wheel 210, facilitating the passage of a horizontally set guide rail assembly. A feeding pressure roller 230 is provided on the feeding side of the feeding drive wheel 210 to press the feeder. The material is pressed to ensure that the base material falls correctly into and fits the groove of the feeding drive wheel 210. An encoder wheel is set near the discharge side of the feeding drive wheel 210. The encoder wheel is connected to the first encoder 240 and is in contact with the surface of the base material to synchronously collect the conveying amount. In order to ensure that the feeding pressure wheel 230 and the encoder wheel are reliably pressed onto the base material, the feeding pressure wheel 230 and the encoder wheel are rotatably connected to the mounting base plate 600 through shafts. The two shafts are arranged at an included angle and connected by a tension connecting spring to form a self-pressurizing structure. A material shortage detector 250 is also set on the base material conveying path for photoelectric detection of the base material shortage status. In order to prevent the base material drift from causing detection errors, the material shortage detector 250 is close to the guide block 260 and located at its front end. The tape feeding assembly 300 is used to apply masking tape at the end of the winding process to improve winding stability. The tape feeding assembly 300 includes a tape pulling cylinder 330 and a tensioning and unloading wheel assembly. Figure 6 and Figure 7As shown, the tape 031 is adhesive. A tape-pulling cylinder 330 is used for intermittent stretching and releasing, with each pull amount being the amount of tape adhered to the end of the base material. A tensioning and unloading wheel assembly provides tension to the tape 031. The tensioning and unloading wheel assembly includes a unloading wheel 340, a pressing mechanism 360, a second position sensor 711, a resistance loading shaft, a fixed guide wheel 350, a vacuum slide 390, and a clearance guide wheel 381. The tape roll 030 is positioned on the resistance loading shaft for synchronous rotation. The resistance loading shaft is connected to a resistance bearing. The rotatable mounting base provides a certain rotational resistance to the tape roll 030. The feeding roller 340 is located between the tape roll 030 and the fixed guide roller 350, and is positioned below both. The feeding roller 340 can be vertically slidably mounted on the mounting base plate 600 via a slide block. The tape is guided to the vacuum slide block 390 via the feeding roller 340, the fixed guide roller 350, and the clearance guide roller 381. The tape 031 is automatically tensioned using the gravity of the feeding roller 340. The vacuum slide block 390 simultaneously performs cutting and pressing of the tape. In the adhesion and feeding state, the resistance loading shaft remains stationary, and the briquetting drive cylinder drives the briquetting block radially away from the fixed guide wheel 350, unloading the clamping force. The feeding wheel 340 slowly feeds the tape 031 upwards until the single pull amount is completely released, and the tape feeding assembly 300 enters the pulling state. In the pulling state, the briquetting mechanism 360 presses the base material on the fixed guide wheel 350. The briquetting mechanism 360 includes a briquetting block and a briquetting drive cylinder. The end of the briquetting block is provided with an arc-shaped groove that adapts to the groove of the fixed guide wheel 350. The briquetting drive cylinder... The driving pressure block moves radially along the fixed guide wheel 350 to approach and extend into the arc-shaped pressure groove to press the base material. The driving end of the belt pulling cylinder 330 pushes the material feeding wheel 340 on the slide to move downward, pulling the belt 031 to overcome the resistance of the loading shaft and rotate to release. When the slide moves down to the belt feeding position at the lower end of the slide rail, the preset length of belt 031 is fed. The second position sensor 711 collects the position signal and sends a stop signal to the belt pulling cylinder 330. The driving rod of the belt pulling cylinder 330 is reset to the belt feeding position. The material pulling assembly 500 is used to pull the base material for conveying, such as... Figure 5As shown, it includes a guide rail assembly, a pulling roller 530, and a pulling drive 540. The pulling roller 530 has a layer of rubber or elastic rubber on its surface, providing elastic micro-pressure and pulling force to convey the base material under the drive of the pulling drive 540. The guide rail assembly is used to guide and limit the horizontal chute of the base material, facilitating precise cutting and compaction. The guide rail assembly includes a base material guide rail 510 and a vacuum guide rail 520 arranged sequentially and with gaps between them. The installation gap between the base material guide rail 510 and the vacuum guide rail 520 is used for the tape 031 cutting operation. The tape cutting mechanism 3 20 includes pneumatic scissors and a cutting cylinder. The cutting cylinder is mounted on the mounting base plate 600. The pneumatic scissors penetrate into the mounting gap to cut the tape 031. The upper opening is located above the end of the groove of the vacuum guide rail 520. The pull wheel 530 extends into the upper opening for conveying. The upper opening is located above the groove of the rear section of the base material guide rail 510 for the vacuum slide block 390 to press the base material and adhere the tape 031. The bottom of the groove of the base material guide rail 510 is provided with a cutting clearance notch corresponding to the position of the base material cutter 310 to facilitate cutting the filler tape 011. The base material cutting mechanism, used for punching base material, is located directly above the base material guide rail 510. It includes a cutting drive 370, a base material cutter 310, a vacuum slide 390, and a linkage seat 380. Figure 6 and Figure 7 As shown, the pressing plane 391 at the bottom of the vacuum slide 390 presses the base material next to the notch of the cutter, providing cutting support to facilitate the cutting of the base material cutter 310. The base material cutter 310 and the vacuum slide 390 are mounted on the linkage seat 380 and are synchronously driven by the cutting drive 370 for punching. In order to avoid the instantaneous impact force acting on the base material and causing a stamping, the vacuum slide 390 is connected to the linkage seat 380 through a connecting column. The vacuum slide 390 and the linkage seat 380 are respectively connected to the vertical slide rail on the mounting base plate 600 through the slide. The upper end of the connecting column is locked on the linkage seat 380, and the lower end is fixedly connected to the vacuum slide 390. A buffer spring is sleeved on the connecting column. The buffer spring is pressed between the linkage seat 380 and the vacuum slide 390. Thus, the linkage seat 380 drives the vacuum slide 390 downward through the buffer spring, which can buffer the downward impact. At the same time, the vacuum slide 390 elastically presses the surface of the base material to provide support. The pick-and-place robot 700 is used to transfer the material tray 040 between the filler tape winding station and the loading station, or between the support tape winding station and the unloading station. It includes a station switching drive mechanism 710, a linear drive mechanism 720, and a negative pressure suction cup 730. Figure 9 and Figure 10As shown, the negative pressure suction cup 730 is used for negative pressure adsorption of the material tray 040. It is rotatably mounted on the drive end of the linear drive 720 mechanism via bearings, so that the clamping station can assist in clamping the material tray 040 and rotating synchronously. The negative pressure suction cup 730 is linearly moved by the linear drive 720 mechanism. When picking up or placing the material tray 040, it moves vertically closer to the loading station to pick up the material or closer to the unloading station to place the material. When clamping the material tray 040, it moves vertically closer to the drive power plate 910 and applies clamping force, thereby increasing the contact friction between the back of the material tray 040 and the surface of the drive power plate 910. Friction force reliably drives the material tray 040 to rotate and reel in the base material; the linear drive 720 mechanism is installed on the station switching drive 710 mechanism, driving the linear drive 720 mechanism and the negative pressure suction cup 730 to rotate synchronously, switching between the clamping station and the loading station or unloading station. In order to improve the control accuracy, a third position sensor 920 is set to anchor the key position. The third position sensor 920 sends the position anchoring signal of the negative pressure suction cup 730 facing the drive power tray 910 to the station switching drive 710 mechanism to accurately control its stop point; The negative pressure suction cup 730 includes a front panel plate 731, a back plate plate 733, a suction cup 732, and a support shaft 735, such as Figure 10 As shown, a plurality of suction cups 732 are arranged in a circular array on the panel 731. The negative pressure suction holes of the suction cups 732 are connected to the radial air passage grooves 734 on the surface of the back plate 733. The panel 731 and the back plate 733 are stacked and fixed to seal the air passage grooves 734. The support shaft 735 integrates support, rotation and negative pressure supply functions. It includes a mounting shaft section 7351 and a positioning shaft section 7353. The mounting shaft section 7351 is rotatably supported by bearings in the bearing housing. 5. An axial air hole 7352 is provided through the shaft section 7351. One end of the shaft section 7351 is connected to a pneumatic connector 736. Several radial air holes 7354 are opened on the circumference of the positioning shaft section 7353, which are connected to the axial air hole 7352. The radial air holes 7354 are connected to the suction cup 732 one by one through the air channel groove 734. The other end of the directional shaft section extends out of the panel plate 731 and matches the center identification hole of the material tray 040, so that its center coincides with the rotation center of the negative pressure material picking tray 040. like Figure 11 and Figure 12 As shown, the power unit 900 includes a drive mechanism, a gearbox 930, and a drive power disk 910. The gearbox 930 can be a combination of a pinion and a ring gear. The middle part has a clearance center hole for the clearance material positioning device 950. The drive mechanism drives the drive power disk 910 to rotate through the gearbox 930. The drive power disk 910 and the pick-and-place robot 700 work together to clamp the material tray 040. The material tray 040 is rotated and wound up the base material by friction. The power unit 900 and the pick-and-place robot 700 are respectively arranged on both sides of the mounting base plate 600 and are docked and clamped through the docking hole 610 opened on the mounting base plate 600. The material head positioning device 950, integrated into the power unit 900, includes a positioning drive mechanism 951, a guide ring 953, a positioning rod 954, and a positioning pin 955. The drive power disk 910 has a radially formed back groove. The positioning rod 954 employs a lever structure, with a central pin connecting the two sides of the back groove. The positioning rod 954 rotates around the pin, and the positioning pin 955 at its end approaches the material tray 040 and applies a positioning clamping force. A clearance groove 912, penetrating the disk surface, is formed along the back groove on the edge of the drive power disk 910. The clearance groove 912 is used to allow for the positioning clamping movement of the positioning pin 955 and the positioning rod 954. Because the outer diameter of the drive power disk 910 is smaller than the shaft diameter of the winding shaft of the material tray 040, the material tray 040 edge only experiences pressure directly opposite the material head position. The clamping force deforms the back edge of the disc to clamp and position the carrier tape head. The positioning pin 955 is threaded onto the end of the positioning rod 954 to adjust the clamping force. The positioning rod 954 receives the drive of the guide ring 953 through the sliding bearing 957. The positioning drive 951 mechanism is connected to the mounting base plate 600 and kept fixed. The drive power disk 910 has a guide center hole 911. The guide ring 953 is supported by the positioning drive 951 mechanism. It can be rotatably set in the guide center hole 911 through the sliding bearing 957 and is guided by the guide center hole 911 to achieve axial movement. A return spring 956 is compressed and embedded on the drive power disk 910. The outer end of the return spring 956 abuts against the rod section near the end of the positioning rod 954 and applies a rebound force. The guide ring 953 is also equipped with a fiber optic sensor array 952 to detect and position the winding start position before the material head is clamped. The movement of the guide ring 953 controls the fiber optic sensor array 952 to approach the material tray 040 to collect information, and it exits the detection area synchronously during the clamping process. The fiber optic sensor array 952 identifies a unique winding start point based on the photoelectric signals of the center identification hole and the fan-shaped identification hole of the material tray 040. A fourth position sensor is set on the drive mechanism to anchor the winding start position. The winding start position is determined by the feeding point of the base material. When the material head positioning device 950 rotates to the winding start position, it sends an anchoring signal to the drive mechanism.

[0021] In addition, according to the structure of the base material, the tape feeding assembly 300 is located above the rear side of the pulling assembly 500, providing the adhesive tape 031 for overlay bonding. The base material supply assembly 200 is located below the rear side of the pulling assembly 500, providing the filling material tape 011 or the support material tape 021. The pick-and-place robot 700 of the filling material tape winding station is located on the front side of the mounting substrate 600, while the pick-and-place robot 700 of the support material tape winding station is located on the rear side of the mounting substrate 600. The pulling directions of the pulling assembly 500 of the filling material tape winding station and the pulling assembly 500 of the support material tape winding station are opposite, forming a compact arrangement structure of peripheral feeding and central clamping and winding on the mounting substrate 600. In one exemplary embodiment of this disclosure, in order to accurately position the tape head for adhesion, and to position and tighten the rear tape head after cutting and to absorb and support the end of the front tape 031, vacuum suction holes are respectively provided in the vacuum slide 390 and the vacuum guide rail 520, and are connected to the vacuum air path; wherein, the pressing plane 391 at the bottom of the vacuum slide 390 and the receiving side are provided with suction grooves 392. After the tape 031 is tensioned and passes around the guide wheel 381 on the linkage seat 380, it is guided to the suction grooves 392. During the base material cutting operation, the pressing block mechanism 360 unloads the pressing force, and at the same time, the vacuum slide 390 descends, pulling the tape 031. 1. When moving down synchronously, the pressing plane 391 elastically presses the base material and then stops vacuum adsorption. Under the action of elastic pressure, the tape 031 is adhered to the surface of the base material. Before cutting, the vacuum is turned on. The vacuum slide 390 and the vacuum guide rail 520 generate vacuum suction to flatten the tape 031 so that the pneumatic scissors can cut it. After cutting, the vacuum slide 390 adsorbs the end of the tape and maintains the tension on the tensioning and unloading wheel group after cutting. The vacuum suction hole at the top of the chute adsorbs and supports the end of the front tape 031 to prevent it from adhering to the bottom of the chute. Under the winding motion and the pressing of the pressure roller 440, the end of the tape 031 is wound up and glued to the end of the base material. In one exemplary embodiment of this disclosure, the base material at the filler tape winding station is filler tape 011. Because filler tape 011 has low toughness and is easily torn, and the filler roll 010 is relatively large, an active unwinding mechanism 100 is provided at the filler tape winding station to actively unwind the filler roll 010. Figure 4 As shown, the active unloading mechanism 100 includes an unloading drive 110, an active support wheel 120, a driven support wheel 140, and an unloading detector 130. The active support wheel 120 and the driven support wheel 140 are parallel to the center line of the filler roll 010 and are symmetrically arranged on both sides of the center of the filler roll 010. The two together support the edge of the filler roll 010. The active support wheel 120 is driven by the unloading drive 110 to provide the unwinding rotation power of the filler roll 010. The unloading detector 130 detects the loosening state of the filler strip 011 through a transparent photoelectric sensor and starts the unloading drive 110 to actively unload the filler. After the unloading detector 130 located directly below the filler roll 010 detects that the outer ring of the filler strip 011 has loosened and sagged, it sends a loosening signal to trigger the start of the feeding motor 220 and the pulling drive 540. If the unwinding rate of the filler strip 011 is lower than the winding rate, the start of the feeding motor 220 and the pulling drive 540 is stopped, or the speed of the unloading drive 110 is adjusted.

[0022] In one exemplary embodiment of this disclosure, in order to automatically switch to the next operation after filling to a preset thickness, a pressure roller mechanism 400 for collecting the thickness of the base material winding is also provided on the clamping station, such as... Figure 8As shown, the pressure roller mechanism 400 includes a pressure roller 440, a pressing cylinder 410, a flexible support structure 420, a mounting block 450, and a first position sensor 460. The mounting block 450 is connected to the driving end of the pressing cylinder 410 through the flexible support structure 420. The pressure roller 440 is mounted on the mounting block 450. The pressing cylinder 410 drives the flexible support structure 420 and the pressure roller 440 to move radially synchronously to the initial thickness coordinate. The pressure roller 440 presses onto the base material of the material tray 040. Under the flexible support of the flexible support structure 420, the pressure roller 440 and the mounting block 450 move radially outward with the winding thickness. The first position sensor 460 is mounted on the mounting base plate 600 according to the preset thickness to collect the positioning signal of the mounting block 450 and send it to the base material cutting mechanism and the material pulling drive 540 to stop the conveying of the base material and the tape 031 and to perform cutting at the same time. In addition, a second encoder 430 is provided on the pressure roller 440 to collect the conveying amount of the base material in real time.

[0023] In one exemplary embodiment of this disclosure, the process transfer mechanism 800 utilizes the weight of the material tray 040 to perform process transfer, such as... Figure 13 and Figure 14 As shown, it includes a transfer trough 810 and a lifting mechanism. The transfer trough 810 is fixed to the plane of the mounting base plate 600. It extends from the docking hole 610 of the filler tape winding station to directly below the docking hole 610 of the support tape winding station. The bottom of the transfer trough 810 is a sloped trough bottom 812. The side of the filler tape winding station is higher than the side of the support tape winding station. The picking and placing robot 700 of the filler tape winding station unloads the vacuum suction, and the material tray 040 is automatically rolled from the filler tape winding station to the support tape winding station. The lifting mechanism includes a lifting block 830 and a lifting drive 820. The side surface and bottom surface of the transfer trough 810 at the lower position are both... The lifting block 830 is hollow and located directly below the docking hole 610 of the support strip winding station. It extends into the bottom of the hollow groove and receives the transfer tray 040 through the positioning arc groove 831 at the upper end. The fiber optic sensor array 952 of the support strip winding station detects the tray 040 in place and triggers the lifting drive 820 to raise and lower the lifting block 830, raising the tray 040 in the positioning arc groove 831 to the clamping station. The pick-and-place robot arm 700 moves linearly to clamp it. Two operation holes 811 are opened through the front and rear sides of the transfer groove 810, corresponding to the positions of the drive power plate 910, respectively, to make way for the drive power plate 910 or the negative pressure suction cup 730.

[0024] The workflow and packaging process of the electronic tray 040 packaging equipment include the following steps: S0, filler roll 010, support roll 020 and tape roll 030 are installed in place, and the filler tape 011 head and support tape 021 head are respectively pulled to their respective pull rollers 530 according to the conveying path. The discharge wheel 340 slides to the discharge position, the pressing mechanism 360 presses and fixes the tape 031 on the guide wheel 350, and the tape head is pulled into the suction groove 392 of the vacuum slide 390. The vacuum suction is activated to position the tape head. S1. On the material tray 040 loading line, the material tray 040 to be packaged arrives at the loading station. The negative pressure suction cup 730 of the picking and placing robot 700 at the filling tape winding station flips downwards and moves down to pick up the front of the material tray 040 directly below. It then flips to a vertical position and moves horizontally to the side clamping station. The negative pressure suction cup 730 and the drive power plate 910 jointly clamp the material tray 040. The drive power plate 910 drives the material tray 040 to rotate. Fiber optic sensor array The column 952 identifies the unique winding start point of the material tray 040. The negative pressure suction cup 730 positions the winding start point of the material tray 040 at the base material feeding point. The drive power plate 910 rotates independently to adjust the material head positioning device 950 to the base material feeding point. The negative pressure suction cup 730 and the drive power plate 910 resume jointly clamping the material tray 040. At the same time, the material head positioning device 950 is correctly aligned with the base material feeding point and clamps and positions the material head of the base material on the material tray 040. At the same time, the pressing cylinder 410 drives the pressing roller 440 to move radially and press it against the base material on the material tray 040; S2. The active feeding mechanism drives the filler roll 010 to rotate. The feeding detector 130 detects the loosened filler strip 011, triggering the base material supply component 200 and the pulling component 500 to rotate synchronously. The pulling wheel 530 of the pulling component 500 pulls the filler strip 011 for conveying. At the same time, the drive power disk 910 drives the material disk 040 to rotate at a constant speed for winding. The pressure roller 440 collects the thickness of the base material roll. S3. When the first position sensor 460 detects the preset winding thickness, it triggers the cutting drive 370, which drives the base material cutter 310 and the vacuum slide 390 to move down synchronously. The pressing mechanism 360 simultaneously unloads the pressing force. The base material cutter 310 cuts the filler tape 011. The vacuum slide 390 remains in the downward position and presses slightly on the base material. At this time, the vacuum slide 390 closes the vacuum. Under the elastic pressure of the vacuum slide 390, the tape 031 adheres to the surface of the filler tape 011. The material pulling assembly 500 continues to pull the material. According to the conveying volume monitoring of the first encoder 240 and the second encoder 430, when the tape 031 at the end of the filler tape 011 reaches the preset pasting length, the vacuum guide rail 520 and the vacuum slide 390 simultaneously open the vacuum adsorption positioning tape 031. The tape cutting mechanism 320 cuts the tape. Under the rotation of the drive power disk 910 and the pressing of the pressure roller 440, the tape 031 pastes and fixes the end of the wound filler tape 011. S4. The vacuum slide 390 adsorbs the tape head. After cutting, the cutting drive 370 quickly resets. The pressing mechanism 360 moves down to press the tape 031 on the fixed guide wheel 350, which helps to fix the tape 031 and prevents the tape head from slipping off the suction groove 392 on the pressing plane 391 so that the end can be glued during the next winding. At the same time, the tape feeding assembly 300 pre-pulls the material, the tape pulling cylinder 330 drives the feeding wheel 340 downward, the stretched tape roll 030 releases the tape 031, and the feeding wheel 340 moves down to the tape feeding position to complete the pre-pulling of the preset single pulling amount; S5. At the filler tape winding station, the material head positioning device 950 and the pick-and-place robot 700 simultaneously unload the clamping force. The material tray 040 is automatically rolled to the support tape winding station under gravity. The lifting mechanism raises the material tray 040 to the coaxial height of the pick-and-place robot 700. The negative pressure suction cup 730 of the pick-and-place robot 700 and the drive power plate 910 jointly clamp the material tray 040. At the same time, the material head positioning device 950 clamps and fixes the base material head on the material tray 040. As a result, the base material supply component 200 of the support tape winding station starts to transport the support tape 021. The drive power plate 910 drives the material tray 040 to rotate for winding. The pressure roller 440 collects the thickness of the base material roll. When the preset winding amount of the support tape 021 is reached, cut and secure the winding end according to step S3, and reset and pre-stretch the tape feeding assembly 300 according to step S4. S5. The robotic arm 700 at the support strip winding station maintains the suction force and flips to place the finished winding and packaging tray 040 horizontally on the unloading station of the tray 040 unloading line for unloading.

[0025] The directional words mentioned in this article, such as "front," "back," "up," "down," "side," "end," "inner," "outer," "front," and "back," are based on... Figures 1-14 The description refers to the orientation or positional relationship shown in the corresponding figures, or the direction of transport. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a particular orientation, or to be constructed and operated in a particular orientation.

[0026] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0027] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electronic tray packaging device, characterized in that: A filler tape winding station and a support tape winding station are sequentially arranged on the mounting base plate (600). A loading station located below the filler tape winding station and a unloading station located below the support tape winding station are respectively provided on both sides of the mounting base plate (600). A material tray transfer path is established between the filler tape winding station and the support tape winding station through a process transfer mechanism (800). At least the following are provided on both the filler tape winding station and the support tape winding station: The base material supply assembly (200) includes a feeding drive wheel (210) and a feeding motor (220). The base material is wound around the feeding drive wheel (210), and the feeding motor (220) drives the feeding drive wheel (210) to rotate and convey the material. The tape feeding assembly (300) includes a tape pulling cylinder (330) and a tensioning and unloading wheel assembly. The tape (031) is pulled and released by the tape pulling cylinder (330), tensioned by the tensioning and unloading wheel assembly, and a certain length of tape (031) is attached to the end of the base material. The material pulling assembly (500) includes a guide rail assembly, a material pulling wheel (530), and a material pulling drive (540). The guide rail assembly is provided with a chute, and the end of the chute has an upper opening. The base material passes through the chute and is pulled and conveyed by the material pulling wheel (530) extending into the upper opening. The material pulling wheel (530) is driven by the material pulling drive (540). The base material cutting mechanism, located at the rear end of the pulling assembly (500), is used to punch the base material; The tape cutting mechanism (320) is located between the base material cutting mechanism and the material pulling assembly (500) and is used to cut the tape after reaching a preset length. The pick-and-place robot (700) is used to transfer the material tray between the filling material strip winding station and the loading station or the support material strip winding station and the unloading station. The end of the pick-and-place robot (700) is a rotatably mounted negative pressure suction cup (730) for negative pressure suction of the material tray (040). The power unit (900) includes a drive power disk (910), which works in conjunction with the pick-and-place robot (700) to clamp the material tray (040) and drives the material tray (040) to rotate and wind up the base material through friction. The power unit (900) and the pick-and-place robot (700) are respectively disposed on both sides of the mounting base plate (600) and are clamped and docked through the docking holes (610) opened on the mounting base plate (600). The material head positioning device (950) is integrated on the power unit (900) and is used to press the material tray (040) to deform and clamp the material head of the base material. The tape feeding assembly (300) and the base material feeding assembly (200) are respectively disposed on the upper and lower sides of the pulling assembly (500). The pick-and-place robot (700) of the filler tape winding station is located on the front side of the mounting base plate (600), and the pick-and-place robot (700) of the support tape winding station is located on the rear side of the mounting base plate (600). The pulling directions of the pulling assembly (500) of the filler tape winding station and the pulling assembly (500) of the support tape winding station are opposite.

2. The electronic tray packaging equipment as described in claim 1, characterized in that: The material roll is positioned below the feeding drive wheel (210). The guide rail assembly is positioned along the horizontal tangent direction of the upper edge of the feeding drive wheel (210). The base material supply assembly (200) also includes a feeding pressure roller (230) and a guide block (260). The feeding pressure roller (230) is located on the feeding side of the feeding drive wheel (210) and is used to press the base material onto the feeding drive wheel (210). The guide block (260) is positioned along the conveying path of the base material, is fixed on the mounting base plate (600), and is located at the front end of the feeding drive wheel (210) to guide and adjust the base material.

3. The electronic tray packaging equipment as described in claim 1, characterized in that: The base material at the filler tape winding station is the filler tape (011). The filler roll (010) is equipped with an active unwinding mechanism (100) for active unwinding. The active unwinding mechanism (100) includes an unwinding drive (110), an active support wheel (120), a driven support wheel (140), and an unwinding detector (130). The active support wheel (120) and the driven support wheel (140) are parallel to the center line of the filler roll (010) and are symmetrically arranged on both sides. The two together support the edge of the filler roll (010). The active support wheel (120) is driven by the unwinding drive (110) to provide rotational power for the unwinding of the filler roll (010). The unwinding detector (130) is located directly below the filler roll (010) and is used to detect the loosening state of the filler tape (011) and send the loosening signal to the feeding motor (220) and the pulling drive (540).

4. The electronic tray packaging equipment as described in claim 2, characterized in that: It also includes a pressure roller mechanism (400) for collecting the winding thickness of the base material. The pressure roller mechanism (400) includes a pressure roller (440), a clamping cylinder (410), a flexible support structure (420), a mounting block (450), and a first position sensor (460). The clamping cylinder (410) and the mounting block (450) are respectively connected to the two ends of the flexible support structure (420). The pressure roller (440) is mounted on the mounting block (450). The clamping cylinder (410) drives the flexible support structure. (420) and pressure roller (440) move radially synchronously to the initial thickness coordinate. Pressure roller (440) presses on the base material of the material tray (040). Under the flexible support of the flexible support structure (420), pressure roller (440) and mounting block (450) move radially outward with the winding thickness. The first position sensor (460) is installed on the mounting base plate (600) to collect the positioning signal of mounting block (450) and send it to the base material cutting mechanism and the feeding drive wheel (210).

5. The electronic tray packaging equipment as described in claim 4, characterized in that: The base material cutting mechanism includes a cutting drive (370), a base material cutter (310), a vacuum slide (390), and a linkage seat (380). The cutting drive (370) is used to drive the vacuum slide (390) to rise and fall. The base material cutter (310) is fixedly installed on the linkage seat (380). The vacuum slide (390) is located at the rear end of the base material cutter (310) and is used to press the base material after the punching point. It is slidably connected to a connecting column. The end of the connecting column is locked on the linkage seat (380), and the lower end is fixedly connected to the vacuum slide (390). A buffer spring is sleeved on the connecting column. The buffer spring is pressed between the linkage seat (380) and the vacuum slide (390) to buffer the punching action of the vacuum slide (390) and apply elastic micro pressure.

6. The electronic tray packaging equipment as described in claim 5, characterized in that: The tensioning and unloading wheel assembly includes an unloading moving wheel (340), a pressing mechanism (360), a second position sensor (711), a resistance loading shaft, a fixed guide wheel (350), a vacuum slide (390), and a clearance guide wheel (381). The material roll is loaded on the resistance loading shaft. The base material is guided to the vacuum slide (390) via the unloading moving wheel (340), the fixed guide wheel (350), and the clearance guide wheel (381). The downward pressing of the vacuum slide (390) adheres the adhesive tape (031) on it to the surface of the base material. The pressing mechanism (360) is located beside the fixed guide wheel (350) and is used to press the fixed guide wheel (350) tightly. The base material on the plate assists in pulling the material. The feeding wheel (340) is slidably mounted on the slide rail of the mounting base plate (600). When the base material on the fixed guide wheel (350) is pressed, the feeding wheel (340) is driven by the tape pulling cylinder (330) directly above it to pull the tape roll (030) downward and release the tape (031). The feeding wheel (340) pulls the tape (031) by gravity and moves upward as the tape (031) is wound up. The slide rail is provided with a tape feeding position. The second position sensor (711) is used to detect the arrival signal of the feeding wheel (340) reaching the tape feeding position and send it to the tape pulling cylinder (330).

7. The electronic tray packaging equipment as described in claim 6, characterized in that: The guide rail assembly includes a base material guide rail (510) and a vacuum guide rail (520). The base material guide rail (510) is used to guide and align the base material. The vacuum guide rail (520) is located behind the base material guide rail (510). The top of the groove of the vacuum guide rail (520) is provided with several vacuum suction holes along the material pulling direction. The vacuum suction holes are connected to the vacuum air path and are used to adsorb and position the tape (031) before and after tape cutting. The base material guide rail (510) is provided with a pressing opening to allow for the pressing and positioning of the vacuum slide (390) and the adhesion of the tape (031). An installation gap is provided between the base material guide rail (510) and the vacuum guide rail (520) for installing the tape cutting mechanism (320). The bottom of the vacuum slide (390) has a pressing surface (391) and a material receiving side with a suction groove (392). The bottom of the suction groove (392) has several suction holes for vacuum adsorption of the tape (031) before and after tape cutting.

8. The electronic tray packaging equipment as described in claim 1, characterized in that: The process transfer mechanism (800) includes a transfer trough (810) and a lifting mechanism. The transfer trough (810) extends from the docking hole (610) of the filler tape winding station to directly below the docking hole (610) of the support tape winding station. The lifting mechanism includes a lifting block (830) and a lifting drive (820). The lifting block (830) is located at the bottom of the transfer trough (810) directly below the support tape winding station. The lifting block (830) is provided with a positioning device for the material tray (040). The positioning arc groove (831) and the bottom of the transfer groove (810) are sloped groove bottoms (812), which are used for the automatic rolling transfer of the material tray (040) from the filling material tape winding station to the positioning arc groove (831). The lifting drive (820) lifts and lowers the lifting block (830), which is used to lift the material tray (040) in the positioning arc groove (831) to the clamping station. Two operating holes (811) are opened through both sides of the transfer groove (810), which are used to make way for the drive power plate (910) or the negative pressure suction cup (730).

9. The electronic tray packaging equipment as described in claim 6, characterized in that: The pressure roller (440) is equipped with a second encoder (430), and the feeding drive roller (210) is equipped with an encoding wheel. The encoding wheel is located in front of the feeding pressure roller (230). The two are rotatably connected to the mounting base plate (600) by their respective shafts. The two shafts are set at an angle and connected by a connecting spring to achieve mutual self-pressurization. The encoding wheel is connected to the first encoder (240). A material shortage detector (250) is also provided on the conveying path of the base material. The material shortage detector (250) is located at the front end of the guide block (260).

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