Automatic paper penetrating device of forming machine

Abstract

An automatic paper penetrating device of a forming machine comprises a rack, a paper clamping mechanism, a rotary conveying mechanism, a paper loosening mechanism and a paper guiding mechanism. The rack is arranged on the forming machine, is arranged between the paper disc and the downstream device and is used as a carrier of the paper penetrating device; the paper clamping mechanism is mounted on the rotary conveying mechanism and is used for clamping the end part of the forming paper; the rotary conveying mechanism is obliquely installed on the rack and used for conveying the paper clamping mechanism to one side of a downstream device from the side close to the paper disc, and automatic paper penetrating is achieved. The paper loosening mechanism is installed on the downstream device and used for opening the paper clamping mechanism and loosening the forming paper clamped by the paper clamping mechanism. The paper guiding mechanism is installed on the machine frame and used for adjusting the motion trail of the forming paper during automatic paper penetrating and after automatic paper penetrating is completed and guiding the forming paper. The paper penetrating device can solve the problem of penetrating forming paper in a narrow space in filter stick forming equipment, the automation level and the paper penetrating efficiency of the paper penetrating device are improved, and the manual paper penetrating operation risk of personnel is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tobacco filter rod forming technology, specifically, to an automatic paper feeding device for a forming machine. Background Technology

[0002] With the continuous advancement of tobacco machinery technology, filter rod forming equipment is achieving increasingly higher production speeds, higher levels of automation, and more compact structural designs, resulting in more and more functions being implemented within a limited space. Among these, the forming paper supply and replacement device is a crucial component of filter rod forming equipment, directly determining the production efficiency of filter rod forming.

[0003] To ensure the automatic input of paper tape (forming paper) within the confined space of filter rod forming equipment, reduce the risks of manual paper feeding operations due to space constraints, and improve paper feeding efficiency, people have been seeking an ideal technical solution. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic paper feeding device for a forming machine. This invention aims to solve the problem of feeding the formed paper into the confined space of the filter rod forming equipment, thereby improving the automation level and efficiency of the paper feeding device and reducing the risks associated with manual paper feeding operations.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic paper feeding device for a forming machine, comprising a frame, a paper clamping mechanism, a rotary conveying mechanism, a paper loosening mechanism, and a paper guiding mechanism;

[0006] The frame is mounted on the forming machine and positioned between the paper tray and the downstream device, serving as a carrier for the paper feeding device; the paper tray is located on the left side of the frame, and the downstream device is located on the upper right side of the frame;

[0007] The paper clamping mechanism is mounted on the rotary conveyor and is used to clamp the end of the formed paper;

[0008] The rotary conveyor is mounted at an angle on the frame to convey the paper clamping mechanism from the side closest to the paper tray to the side of the downstream device, thereby achieving automatic paper feeding.

[0009] The paper release mechanism is installed on the downstream device and is used to open the paper clamping mechanism and release the formed paper held by the paper clamping mechanism;

[0010] The paper guiding mechanism is installed on the frame and is used to adjust the movement trajectory of the forming paper during and after automatic paper feeding, and to guide the forming paper.

[0011] Based on the above, the paper clamping mechanism includes a paper clamping support, a rotating shaft, and a paper clamping shaft. The rotating shaft and the paper clamping shaft are parallel and spaced apart. Both the rotating shaft and the paper clamping shaft are fixedly installed on the paper clamping support. A paper clamping plate is rotatably mounted on the rotating shaft. A torsion spring is also installed on the rotating shaft to connect with the paper clamping plate and drive the paper clamping plate to rotate. Under the action of the torsion spring, the paper clamping plate rotates to the lower part of the paper clamping shaft and presses tightly against the lower part of the paper clamping shaft to clamp the formed paper.

[0012] Based on the above, an operating panel is fixedly installed at the bottom of the cardboard clamp, and the right side of the operating panel extends out to the right of the cardboard clamp in a cantilevered manner.

[0013] Based on the above, the rotary conveyor mechanism includes a conveyor chain, a drive sprocket, and several guide wheels. A drive motor is fixedly mounted on the frame. The drive sprocket is coaxially fixedly mounted on the motor shaft of the drive motor. The guide wheels are arranged at intervals from the lower left to the upper right and are rotatably mounted on the frame. The central axis of the guide wheels is parallel to the motor shaft of the drive motor. The drive sprocket and each guide wheel are located on the same vertical plane. The conveyor chain is mounted on the drive sprocket and each guide wheel and is arranged at an angle with the left side lower than the right side. The conveyor chain meshes with the drive sprocket and transmits power through the drive sprocket. Each guide wheel rolls in contact with the conveyor chain and guides the movement trajectory of the conveyor chain.

[0014] The rotating shaft and the paper clamping shaft are respectively installed in the corresponding sleeves of the conveyor chain and fixed to the conveyor chain by the shaft end retaining ring. The paper clamping support is fixedly installed on the conveyor chain by the rotating shaft and the paper clamping shaft. At the beginning, the paper clamping support is located on the lower left front side of the lower half of the conveyor chain.

[0015] Based on the above, the paper loosening mechanism includes a paper loosening block, which is installed on the downstream device by screws and is located on the front side of the right side of the upper half of the conveyor chain. A contact pin parallel to the paper clamping shaft is installed on the side of the paper loosening block near the conveyor chain, and the contact pin is located on the movement trajectory of the paper clamping plate.

[0016] When the paper clamping mechanism moves to the loose paper block along the conveyor chain, the clamping plate and the contact pin are pressed into contact and rotate around the rotating shaft. The clamping plate separates from the clamping shaft to release the clamped formed paper to the downstream device.

[0017] Based on the above, the paper guiding mechanism includes a paper guiding rotary cylinder and a paper guiding rod. The paper guiding rotary cylinder is fixedly installed on the frame and located in the lower part of the inner ring of the conveyor chain. A swing arm is integrally formed radially on the lower part of the outer circle of the output shaft end of the paper guiding rotary cylinder. The paper guiding rod is fixedly installed on the lower part of the front side of the swing arm. The output shaft of the paper guiding rotary cylinder, the paper guiding rod and the paper clamping shaft are parallel. The swing arm and the paper clamping support are located on the same vertical plane. The lower end of the swing arm is close to the lower half of the conveyor chain.

[0018] The paper guiding mechanism also includes a paper guiding roller and a first adjusting block. The paper guiding roller is installed on the front side of the first adjusting block. The paper guiding roller passes through the upper right area of ​​the inner ring of the conveyor chain and is located to the right of the loose paper block. The paper guiding roller is parallel to the paper guiding rod. The first adjusting block is slidably installed on the frame and fixed to the frame with screws.

[0019] Based on the above, a heating device is also fixedly installed on the frame. The heating device passes through the inner ring of the conveyor chain and is located between the paper guide rod and the paper guide roller.

[0020] Based on the above, a second adjusting block is also slidably installed on the left side of the frame. The second adjusting block is fixed to the frame by screws. An adjusting wheel is rotatably installed on the second adjusting block. The adjusting wheel is placed between two adjacent guide wheels on the left side and is in contact with the upper left side of the upper half of the conveyor chain.

[0021] Based on the above, it also includes a limiting component, which includes a starting limiting block, an ending limiting block, a starting limiting pin, and an ending limiting pin. Both the starting and ending limiting blocks are U-shaped blocks. The starting limiting block is installed on the lower left side of the frame and fitted onto the upper left side of the upper half of the conveyor chain. The ending limiting block is installed on the upper middle part of the frame and fitted onto the upper middle side of the upper half of the conveyor chain. The starting and ending limiting pins are installed alternately on the conveyor chain. The starting limiting pin, the paper clamping support, and the ending limiting pin are arranged counter-clockwise on the conveyor chain. The paper clamping support is arranged such that the distance between the paper clamping support and the stop limit pin is equal to the distance between the stop limit block and the loose paper block. When the paper clamping support is in the starting position, the starting limit pin contacts the lower part of the starting limit block, restricting the conveyor chain from moving clockwise. When the paper clamping support moves counterclockwise with the conveyor chain to the stop position, the paper clamping support moves to the loose paper block, and the paper clamping plate is squeezed by the contact pin and separated from the paper clamping shaft. The stop limit pin moves to the stop limit block and contacts the right side of the stop limit block, restricting the conveyor chain from continuing to move counterclockwise.

[0022] Based on the above, the starting limit pin and the ending limit pin have the same structure; the starting limit pin includes a connecting pin, a limit ring and a set screw. The connecting pin passes through the corresponding sleeve of the conveyor chain, the limit ring is installed at one end of the connecting pin and fixed to the connecting pin by the set screw, and the limit ring is matched and engaged with the starting limit block.

[0023] This invention has substantial features and advancements compared to existing technologies. Specifically, it designs a paper clamping mechanism and a rotary conveying mechanism. By pressing down the clamping plate, the end of the forming paper can be placed in the gap between the clamping plate and the clamping shaft. Under the action of a torsion spring, the clamping plate and the clamping shaft hold the forming paper. Then, the rotary conveying mechanism transports the paper clamping mechanism from the side near the paper tray to the side of the downstream device. The paper clamping mechanism then drives the forming paper through the narrow space in the filter rod forming equipment. After the clamping plate in the paper clamping mechanism comes into contact with the contact pin in the paper loosening mechanism, the clamping plate and the clamping shaft in the paper clamping mechanism separate, and the clamped forming paper can be released to the downstream device. Then, the rotary conveying mechanism drives the paper clamping mechanism back to the starting position to prepare for the next paper feeding, thus completing the automatic paper feeding. This reduces the risk of manual paper feeding operations, improves paper feeding efficiency and automation level, and solves the problem of paper feeding in the narrow space of the filter rod forming equipment. Subsequently, the downstream device automatically enters the paper feeding state of the forming machine.

[0024] This invention can solve the problem of paper threading in a confined space in filter rod forming equipment, improve the automation level and efficiency of the paper threading device, and reduce the risk of manual paper threading operation. Attached Figure Description

[0025] Figure 1 This is the front axial view of the present invention. Figure 1 .

[0026] Figure 2 This is the front axial view of the utility model. Figure 2 Remove the first, second, and third protective plates.

[0027] Figure 3 This is a rear axial view of the present invention.

[0028] Figure 4 This is a schematic diagram of the paper clamping mechanism of this utility model.

[0029] Figure 5 This is a schematic diagram of the paper-loosening mechanism of this utility model.

[0030] Figure 6 This is a schematic diagram of the starting limit pin of this utility model.

[0031] Figure 7 This is an enlarged schematic diagram of the paper clamping mechanism of this utility model moving counterclockwise with the conveyor chain to the termination position.

[0032] In the diagram: 1. Support plate; 2. Paper clamping support; 3. Rotating shaft; 4. Paper clamping shaft; 5. Paper clamping plate; 6. Torsion spring; 7. Conveyor chain; 8. Drive sprocket; 9. Guide roller; 10. Drive motor; 11. Shaft end retaining ring; 12. Fixing block; 13. Second adjusting block; 14. First adjusting hole; 15. Adjusting screw; 16. Adjusting roller; 17. Second adjusting hole; 18. Paper loosening block; 19. Contact pin; 20. Paper guide rotary cylinder; 21. Connecting plate 22. Paper guide rod; 23. Swing arm; 24. Paper guide roller; 25. First adjusting block; 26. Adjusting groove; 27. Third adjusting hole; 28. Fourth adjusting hole; 29. ​​Heating device; 30. Starting limit block; 31. Ending limit block; 32. Starting limit pin; 33. Ending limit pin; 34. Connecting pin; 35. Limiting ring; 36. Set screw; 37. First protective plate; 38. Second protective plate; 39. Third protective plate; 40. Operating plate. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0034] Example 1

[0035] like Figure 1 As shown, an automatic paper feeding device for a forming machine includes a frame, a paper clamping mechanism, a rotary conveying mechanism, a paper releasing mechanism, and a paper guiding mechanism.

[0036] The frame is mounted on the forming machine and positioned between the paper tray and the downstream device, serving as a carrier for the paper feeding device; the paper tray is located on the left side of the frame, and the downstream device is located on the upper right side of the frame;

[0037] The paper clamping mechanism is mounted on the rotary conveyor and is used to clamp the end of the formed paper;

[0038] The rotary conveyor is mounted at an angle on the frame to convey the paper clamping mechanism from the side closest to the paper tray to the side of the downstream device, thereby achieving automatic paper feeding.

[0039] The paper release mechanism is installed on the downstream device and is used to open the paper clamping mechanism and release the formed paper held by the paper clamping mechanism;

[0040] The paper guiding mechanism is installed on the frame and is used to adjust the movement trajectory of the forming paper during and after automatic paper feeding, and to guide the forming paper.

[0041] Here, the frame is a support plate 1 that is vertically arranged in the left-right direction.

[0042] Specifically, such as Figure 1 , 2As shown in Figure 4, the paper clamping mechanism includes a paper clamping support 2, a rotating shaft 3, and a paper clamping shaft 4. The rotating shaft 3 and the paper clamping shaft 4 are parallel and spaced apart. Both the rotating shaft 3 and the paper clamping shaft 4 are fixedly installed on the paper clamping support 2. A paper clamping plate 5 is rotatably mounted on the rotating shaft 3. A torsion spring 6 is also installed on the rotating shaft 3, which is connected to the paper clamping plate 5 and drives the paper clamping plate 5 to rotate. Under the action of the torsion spring 6, the paper clamping plate 5 rotates to the lower part of the paper clamping shaft 4 and presses tightly against the lower part of the paper clamping shaft 4 to clamp the formed paper.

[0043] Specifically, such as Figure 1 , 2 As shown in Figure 3, the rotary conveyor mechanism includes a conveyor chain 7, a drive sprocket 8, and several guide wheels 9. A drive motor 10 is fixedly installed on the lower left rear side of the support plate 1. The motor shaft of the drive motor 10 passes through the support plate 1 and is located on the front side of the support plate 1. The drive sprocket 8 is coaxially fixedly mounted on the motor shaft of the drive motor 10. Each guide wheel 9 is arranged at intervals from the lower left to the upper right and is rotatably mounted on the front side of the support plate 1. The central axis of the guide wheel 9 is parallel to the motor shaft of the drive motor 10. The drive sprocket 8 and each guide wheel 9 are located on the same vertical plane. The conveyor chain 7 is mounted on the drive sprocket 8 and each guide wheel 9 and is arranged at an angle with the left side lower and the right side higher. The conveyor chain 7 meshes with the drive sprocket 8 and transmits power through the drive sprocket 8. Each guide wheel 9 rolls in contact with the conveyor chain 7 and guides the movement trajectory of the conveyor chain 7.

[0044] The rotating shaft 3 and the paper clamping shaft 4 are respectively installed through the corresponding sleeves of the conveyor chain 7 and fixed to the conveyor chain 7 by the shaft end retaining ring 11. The paper clamping support 2 is fixedly installed on the conveyor chain 7 by the rotating shaft 3 and the paper clamping shaft 4. Initially, the paper clamping support 2 is located on the lower left front side of the lower half of the conveyor chain 7. The drive motor 10 provides power for the movement of the conveyor chain 7 and controls the starting and ending positions of the movement of the conveyor chain 7.

[0045] A fixing block 12 is fixedly installed on the left rear side of the support plate 1 by screws. A second adjusting block 13 located directly below the fixing block 12 is slidably installed on the left rear side of the support plate 1. A first adjusting hole 14 is vertically opened on the support plate 1 corresponding to the second adjusting block 13. The second adjusting block 13 is tightly pressed and fixed to the frame by a screw that slides through and is connected to the first adjusting hole 14. An adjusting screw 15 is vertically threaded through the fixing block 12. The lower end of the adjusting screw 15 is rotatably connected to the top of the second adjusting block 13. An adjusting wheel 16 is rotatably installed on the lower front side of the second adjusting block 13. The lower end of the first adjusting hole 14 is provided with a way to adjust the adjusting wheel 16. The mounting shaft passes through the second adjustment hole 17, which is adjustable up and down. The adjusting wheel 16 is positioned between two adjacent guide wheels 9 on the left side and presses against the upper left side of the upper half of the conveyor chain 7. When adjusting the tension of the conveyor chain 7, the screw on the second adjusting block 13 is loosened to reduce the pressure between the second adjusting block 13 and the support plate 1. Then, the adjusting screw 15 is tightened to move the second adjusting block 13 up or down, thereby adjusting the position of the adjusting wheel 16. The adjusting wheel 16 then presses against or moves away from the conveyor chain 7, causing the conveyor chain 7 to tighten or loosen. Finally, the screw on the second adjusting block 13 is tightened to fix the second adjusting block 13.

[0046] Specifically, such as Figure 1 and Figure 5 As shown, the paper loosening mechanism includes a paper loosening block 18, which is mounted on the downstream device by screws and is located on the front side of the upper right side of the conveyor chain 7. A contact pin 19 parallel to the paper clamping shaft 4 is installed on the side of the paper loosening block 18 near the conveyor chain 7. The contact pin 19 is located on the movement trajectory of the paper clamping plate 5.

[0047] When the paper clamping mechanism moves with the conveyor chain 7 to the loose paper block 18, the clamping plate 5 and the contact pin 19 are pressed into contact and rotate around the rotating shaft 3. The clamping plate 5 separates from the clamping shaft 4 to release the clamped formed paper to the downstream device.

[0048] Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, the paper guiding mechanism includes a paper guiding rotary cylinder 20 and a paper guiding rod 22. The paper guiding rotary cylinder 20 is fixedly installed on the support plate 1 and located in the lower part of the inner ring of the conveyor chain 7. The output shaft of the paper guiding rotary cylinder 20 passes through the support plate 1. A swing arm 23 is integrally formed radially on the lower part of the outer circle of the output shaft end of the paper guiding rotary cylinder 20. The paper guiding rod 22 is fixedly installed on the lower part of the front side of the swing arm 23. The output shaft of the paper guiding rotary cylinder 20, the paper guiding rod 22 and the paper clamping shaft 4 are parallel. The swing arm 23 and the paper clamping support 2 are located on the same vertical plane. The lower end of the swing arm 23 is close to the lower half of the conveyor chain 7. When the paper clamping mechanism holds the formed paper for paper feeding, the output shaft of the paper guide rotary cylinder 20 drives the swing arm 23 to swing counterclockwise, thereby adjusting the position of the paper guide rod 22 so that the paper guide rod 22 is close to the lower half of the conveyor chain 7. When the formed paper passes through the paper guide rod 22, the paper guide rod 22 can support the formed paper to the right and lower, avoiding contact between the formed paper and other parts when feeding, making the feeding process smoother.

[0049] The paper guiding mechanism also includes a paper guiding roller 24 and a first adjusting block 25. The paper guiding roller 24 is installed on the front side of the first adjusting block 25. The paper guiding roller 24 passes through the upper right side of the inner ring of the conveyor chain 7 and is located to the right of the loose paper block 18. The paper guiding roller 24 is parallel to the paper guiding rod 22. An adjusting groove 26 is vertically opened on the upper right side of the rear side of the support plate 1. The first adjusting block 25 is slidably installed in the adjusting groove 26. A third adjusting hole 27 is opened on the support plate 1 at the position corresponding to the position of the paper guiding roller 24, through which the mounting shaft of the paper guiding roller 24 passes and is adjusted vertically. At least two fourth adjusting holes 28 with vertical spacing are also opened on the support plate 1 at the position corresponding to the position of the adjusting groove 26. The first adjusting block 25 is pressed and fixed to the support plate 1 by a screw that is slidably connected through the fourth adjusting hole 28. After the paper is fed through the paper, the guide roller 24 guides the forming paper to be automatically fed. The position of the guide roller 24 can be adjusted. Specifically, first loosen the screw on the first adjusting block 25. The pressure between the first adjusting block 25 and the support plate 1 will decrease, so the position of the first adjusting block 25 in the adjusting groove 26 can be adjusted, thereby adjusting the position of the guide roller 24. Finally, tighten the screw on the first adjusting block 25 to fix the first adjusting block 25.

[0050] Specifically, a heating device 29 is fixedly installed on the front side of the support plate 1. The heating device 29 passes through the inner ring of the conveyor chain 7 and is located between the paper guide rod 22 and the paper guide roller 24. After the paper feeding is completed, the output shaft of the paper guide rotary cylinder 20 drives the swing arm to reset clockwise, so that the paper guide rod 22 is reset away from the forming paper. Then the forming paper completely covers the heating device 29, and the forming paper better adheres to the surface of the heating device 29. The heating device 29 heats the forming paper, and the paper feeding device enters the paper feeding state. The heating device 29 is an electric heating device, which is a conventional device and can be purchased on the market. The specific structure and working principle will not be described in detail.

[0051] Specifically, this embodiment also includes a limiting component, which includes a starting limiting block 30, a ending limiting block 31, a starting limiting pin 32, and an ending limiting pin 33. Both the starting limiting block 30 and the ending limiting block 31 are U-shaped blocks. The starting limiting block 30 is installed on the lower left side of the front side of the support plate 1 and fits onto the upper left side of the upper half of the conveyor chain 7. The ending limiting block 31 is installed on the upper middle part of the front side of the support plate 1 and fits onto the upper middle part of the upper half of the conveyor chain 7. The starting limiting pin 32 and the ending limiting pin 33 are spaced apart on the conveyor chain 7. The starting limiting pin 32, the paper clamping support 2, and the ending limiting pin 33 are positioned at intervals along the conveyor chain 7. The paper clamping support 2 is arranged counterclockwise on the conveyor chain 7. The distance between the paper clamping support 2 and the stop limit pin 33 is equal to the distance between the stop limit block 31 and the loose paper block 18. When the paper clamping support 2 is in the starting position, the starting limit pin 32 contacts the lower part of the starting limit block 30, restricting the conveyor chain 7 from moving clockwise. When the paper clamping support 2 moves counterclockwise with the conveyor chain 7 to the stop position, the paper clamping support 2 moves to the loose paper block 18. The paper clamping plate 5 is squeezed by the contact pin 19 and separated from the paper clamping shaft 4. The stop limit pin 33 moves to the stop limit block 31 and contacts the right side of the stop limit block 31, restricting the conveyor chain 7 from continuing to move counterclockwise.

[0052] Specifically, such as Figure 6 As shown, the starting limit pin 32 and the ending limit pin 33 have the same structure; the starting limit pin 32 includes a connecting pin 34, a limit ring 35 and a set screw 36. The connecting pin 34 passes through the corresponding sleeve of the conveyor chain 7. The limit ring 35 is installed at one end of the connecting pin 34 and fixed to the connecting pin 34 by the set screw 36. The limit ring 35 is matched and engaged with the starting limit block 30.

[0053] To protect operators from accidental injury by the moving paper-feeding device, such as Figure 1 As shown, a first protective plate 37 and a second protective plate 38 are fixedly installed on the support plate 1 using screws and hexagonal studs, so that the first protective plate 37 covers the drive sprocket 8 and several guide wheels 9 on the left side, and the second protective plate 38 covers the remaining guide wheels 9. At the same time, a third protective plate 39 is fixedly installed at the mounting shaft ends of the two guide wheels 9 on both sides of the adjusting wheel 16, and the third protective plate 39 covers the adjusting wheel 16.

[0054] The paper tray and downstream device are not shown in the figure.

[0055] The specific working process of this embodiment is as follows:

[0056] (1) In the initial state, the paper clamping mechanism is in the starting position, the paper clamping shaft 4 and the paper clamping plate 5 are in contact, and the heating device 29 preheats;

[0057] (2) When paper feeding is required, the operator presses down the clamping plate 5 to open the gap between the clamping plate 5 and the clamping shaft 4. The operator puts the end of the forming paper into the gap and releases the clamping plate 5. Under the force of the torsion spring 6, the clamping plate 5 resets and the clamping shaft 4 is squeezed, thereby clamping the forming paper put into the gap.

[0058] (3) When the drive motor 10 starts, the motor shaft of the drive motor 10 drives the drive sprocket 8 to rotate counterclockwise. The drive sprocket 8 drives the conveyor chain 7 to move counterclockwise. The conveyor chain 7 drives the paper clamping mechanism to move together, so that the paper clamping mechanism moves from the lower left to the upper right. Then the paper clamping mechanism clamps the forming paper for paper feeding. At the same time, the output shaft of the paper guide rotating cylinder 20 drives the swing arm 23 to swing counterclockwise, so that the paper guide rod 22 is close to the lower half of the conveyor chain 7. When the forming paper passes through the paper guide rod 22, the paper guide rod 22 can support the forming paper to the lower right to prevent the forming paper from contacting the heating device 29.

[0059] (4) When the conveyor chain 7 drives the paper clamping mechanism to move to the loose paper block 18, the clamping paper 5 contacts the contact pin 19. As the conveyor chain 7 continues to move, the clamping paper 5 is squeezed by the contact pin 19 and separated from the paper clamping shaft 4, releasing the clamped forming paper to the downstream device.

[0060] (5) Then, the output shaft of the paper guide rotary cylinder 20 drives the swing arm 23 to swing clockwise to reset, so that the paper guide rod 22 is reset away from the forming paper, and the forming paper completely covers the already heated heating device 29. The forming paper contacts the paper guide rod 22, the heating device 29 and the paper guide roller 24. The heating device 29 heats the forming paper, and the paper feeding device enters the paper feeding state.

[0061] (6) After that, the drive motor 10 starts again and drives the drive sprocket 8 to rotate clockwise to reset. The drive sprocket 8 drives the conveyor chain 7 to move clockwise. The conveyor chain 7 drives the paper clamping mechanism to move to the starting position. The paper feeding device enters the initial state and waits for the next paper feeding operation.

[0062] Example 2

[0063] The difference from Example 1 is that, as Figure 7 As shown, an operating plate 40 is fixedly installed at the bottom of the clamping plate 5, and the right side of the operating plate 40 extends out to the right of the clamping plate 5 in a cantilevered manner. Specifically, a connecting plate 21 is provided at the top of the clamping plate 5, and the connecting plate 21 is fixedly connected to the operating plate 40 by several screws that penetrate the clamping plate 5, thereby fixing the operating plate 40 to the bottom of the clamping plate 5.

[0064] When clamping the forming paper, the operator presses down the operating plate 40 to open the gap between the clamping plate 5 and the clamping shaft 4. After the forming paper is placed into the gap, the operating plate 40 is released. When the clamping mechanism drives the forming paper through the paper and moves to the paper release block 18, the operating plate 40 and the contact pin 19 are pressed into contact, thereby separating the clamping plate 5 and the clamping shaft 4 and releasing the forming paper.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An automatic paper feeding device for a forming machine, characterized in that: This includes the frame, paper clamping mechanism, rotary conveying mechanism, paper unloading mechanism, and paper guiding mechanism; The frame is mounted on the forming machine and positioned between the paper tray and the downstream device, serving as a carrier for the paper feeding device; the paper tray is located on the left side of the frame, and the downstream device is located on the upper right side of the frame; The paper clamping mechanism is mounted on the rotary conveyor and is used to clamp the end of the formed paper; The rotary conveyor is mounted at an angle on the frame to convey the paper clamping mechanism from the side closest to the paper tray to the side of the downstream device, thereby achieving automatic paper feeding. The paper release mechanism is installed on the downstream device and is used to open the paper clamping mechanism and release the formed paper held by the paper clamping mechanism; The paper guiding mechanism is installed on the frame and is used to adjust the movement trajectory of the forming paper during and after automatic paper feeding, and to guide the forming paper.

2. The automatic paper feeding device for the forming machine according to claim 1, characterized in that: The paper clamping mechanism includes a paper clamping support, a rotating shaft, and a paper clamping shaft. The rotating shaft and the paper clamping shaft are parallel and spaced apart. Both the rotating shaft and the paper clamping shaft are fixedly installed on the paper clamping support. A paper clamping plate is rotatably mounted on the rotating shaft. A torsion spring is also installed on the rotating shaft, which is connected to the paper clamping plate and drives the paper clamping plate to rotate. Under the action of the torsion spring, the paper clamping plate rotates to the lower part of the paper clamping shaft and presses tightly against the lower part of the paper clamping shaft to clamp the formed paper.

3. The automatic paper feeding device for the forming machine according to claim 2, characterized in that: An operating panel is fixedly installed at the bottom of the cardboard clamp, and the right side of the operating panel extends out to the right of the cardboard clamp in a cantilevered manner.

4. The automatic paper feeding device for the forming machine according to claim 2 or 3, characterized in that: The rotary conveyor mechanism includes a conveyor chain, a drive sprocket, and several guide wheels. A drive motor is fixedly mounted on the frame. The drive sprocket is coaxially fixedly mounted on the motor shaft of the drive motor. The guide wheels are arranged at intervals from the lower left to the upper right and are rotatably mounted on the frame. The central axis of the guide wheels is parallel to the motor shaft of the drive motor. The drive sprocket and each guide wheel are located on the same vertical plane. The conveyor chain is mounted on the drive sprocket and each guide wheel and is arranged at an angle with the left side lower than the right side. The conveyor chain meshes with the drive sprocket and transmits power through the drive sprocket. Each guide wheel rolls in contact with the conveyor chain and guides the movement trajectory of the conveyor chain. The rotating shaft and the paper clamping shaft are respectively installed in the corresponding sleeves of the conveyor chain and fixed to the conveyor chain by the shaft end retaining ring. The paper clamping support is fixedly installed on the conveyor chain by the rotating shaft and the paper clamping shaft. At the beginning, the paper clamping support is located on the lower left front side of the lower half of the conveyor chain.

5. The automatic paper feeding device for the forming machine according to claim 4, characterized in that: The paper loosening mechanism includes a paper loosening block, which is mounted on the downstream device by screws and is located on the front side of the right side of the upper half of the conveyor chain. A contact pin parallel to the paper clamping shaft is installed on the side of the paper loosening block near the conveyor chain. The contact pin is located on the movement trajectory of the paper clamping plate. When the paper clamping mechanism moves to the loose paper block along the conveyor chain, the clamping plate and the contact pin are pressed into contact and rotate around the rotating shaft. The clamping plate separates from the clamping shaft to release the clamped formed paper to the downstream device.

6. The automatic paper feeding device for the forming machine according to claim 5, characterized in that: The paper guiding mechanism includes a paper guiding rotary cylinder and a paper guiding rod. The paper guiding rotary cylinder is fixedly installed on the frame and located in the lower part of the inner ring of the conveyor chain. A swing arm is integrally formed radially on the lower part of the outer circle of the output shaft end of the paper guiding rotary cylinder. The paper guiding rod is fixedly installed on the lower part of the front side of the swing arm. The output shaft of the paper guiding rotary cylinder, the paper guiding rod and the paper clamping shaft are parallel. The swing arm and the paper clamping support are located on the same vertical plane. The lower end of the swing arm is close to the lower half of the conveyor chain. The paper guiding mechanism also includes a paper guiding roller and a first adjusting block. The paper guiding roller is installed on the front side of the first adjusting block. The paper guiding roller passes through the upper right area of ​​the inner ring of the conveyor chain and is located to the right of the loose paper block. The paper guiding roller is parallel to the paper guiding rod. The first adjusting block is slidably installed on the frame and fixed to the frame with screws.

7. The automatic paper feeding device for the forming machine according to claim 6, characterized in that: A heating device is also fixedly installed on the frame. The heating device passes through the inner ring of the conveyor chain and is located between the paper guide rod and the paper guide roller.

8. The automatic paper feeding device for the forming machine according to claim 6, characterized in that: A second adjusting block is also slidably installed on the left side of the frame. The second adjusting block is fixed to the frame by screws. An adjusting wheel is rotatably installed on the second adjusting block. The adjusting wheel is placed between two adjacent guide wheels on the left side and is in contact with the upper left side of the upper half of the conveyor chain.

9. The automatic paper feeding device for the forming machine according to claim 6, characterized in that: It also includes a limit assembly, which comprises a start limit block, an end limit block, a start limit pin, and an end limit pin. Both the start and end limit blocks are U-shaped blocks. The start limit block is installed on the lower left side of the frame and fits onto the upper left side of the upper half of the conveyor chain. The end limit block is installed on the upper middle part of the frame and fits onto the upper middle side of the upper half of the conveyor chain. The start and end limit pins are installed alternately on the conveyor chain, and the start and end limit pins, paper clamps, and end limit pins are arranged counterclockwise on the conveyor chain. In the column arrangement, the distance between the paper clamp support and the stop limit pin is equal to the distance between the stop limit block and the loose paper block. When the paper clamp support is in the starting position, the starting limit pin contacts the lower part of the starting limit block, restricting the clockwise movement of the conveyor chain. When the paper clamp support moves counterclockwise with the conveyor chain to the stop position, the paper clamp support moves to the loose paper block, and the clamping plate is squeezed by the contact pin and separated from the clamping shaft. The stop limit pin moves to the stop limit block and contacts the right side of the stop limit block, restricting the conveyor chain from continuing to move counterclockwise.

10. The automatic paper feeding device for the forming machine according to claim 9, characterized in that: The starting limit pin and the ending limit pin have the same structure; the starting limit pin includes a connecting pin, a limit ring and a set screw. The connecting pin passes through the corresponding sleeve of the conveyor chain. The limit ring is installed at one end of the connecting pin and is fixed to the connecting pin by the set screw. The limit ring is matched and engaged with the starting limit block.

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