Paper over cam flyer

Abstract

The application provides an outer paper cam flying machine, which comprises a support frame, a driving gear arranged on one side of the support frame, a driving shaft assembly movably arranged on the support frame and connected with the driving gear at least at one end, a paper separating assembly and a positioning pressing plate assembly respectively connected with the driving shaft assembly, and a paper storage clip arranged above the support frame. The driving shaft assembly comprises a transmission gear connected with the driving gear, a driving shaft axially connected with the transmission gear, a paper separating cam arranged on the driving shaft close to the transmission gear, a carrying cam, a positioning cam, a transmission cam and a feeding cam arranged in sequence on the driving shaft away from the paper separating cam. The driving shaft, the carrying cam, the positioning cam, the transmission cam and the feeding cam are coaxially arranged on the driving shaft, which greatly saves the equipment cost, realizes the structural simplification, adopts the rolling bearing driving, guarantees the precision of the structure and improves the driving precision of the structure.

Description

Technical Field

[0001] This invention relates to the field of outer paper processing technology, and in particular to an outer paper cam feeder machine. Background Technology

[0002] The feeder, also known as a paper feeder or paper delivery unit, is a crucial component of modern offset printing presses. Its primary function is to automatically, accurately, and smoothly deliver paper to the positioning or printing unit according to a specific pattern. The efficiency and print quality of an offset printing press are directly related to the performance of the paper feeder. Feeders also play a vital role in mold making, parts processing, plastics manufacturing, and die-cutting, automating complex processing operations and improving production efficiency and product quality.

[0003] Currently, the feeder mainly uses four discrete cams to transport the outer paper, which can be understood as four independent cam structures. This makes the overall structure of the feeder more complex. At the same time, all bearings are linked by oil-lubricated sliding bearings. This linkage increases the wear between bearings. After the bearings wear out, the large gaps will cause vibration, resulting in insufficient overall precision of the mechanism, easy deviation of the feed, and increased difficulty of operation. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an outer paper cam feeder, which aims to solve the problems of complex structure and insufficient precision of the existing feeder.

[0005] The present invention proposes an external paper cam feeder, comprising a support frame, a drive gear disposed on one side of the support frame, a drive shaft assembly movably disposed on the support frame and at least one end connected to the drive gear, a paper separating assembly and a positioning pressure plate assembly respectively connected to the drive shaft assembly, and a paper storage spring disposed above the support frame; The drive shaft assembly includes a transmission gear connected to the drive gear, a drive shaft axially connected to the transmission gear, a paper-splitting cam disposed on the drive shaft near the transmission gear and used to drive the paper-splitting assembly, a transport cam, a positioning cam, a transfer cam and a feeding cam disposed sequentially on the drive shaft away from the paper-splitting cam, a transfer shaft circumferentially disposed at the middle position of the drive shaft, and a transfer component disposed circumferentially on the transfer shaft for transferring paper; Specifically, the drive gear drives the drive shaft assembly to rotate axially, which in turn causes the paper-splitting cam to drive the paper-splitting assembly to suck out the paper from the paper storage spring. At the same time, the drive shaft drives the sucked-out paper to be transferred towards the transfer component. Meanwhile, the transport cam, the transfer cam, and the feeding cam drive the transfer component in a segmented manner, realizing the peristaltic transfer of the paper towards the positioning pressure plate assembly. Finally, the positioning cam drives the positioning pressure plate assembly to press the paper out of the path to the external workstation equipment.

[0006] As described above, the drive shaft assembly is axially rotated by the drive gear, which sequentially causes the paper-splitting cam to drive the paper-splitting assembly to suck out the paper from the paper storage spring. At the same time, the drive shaft moves the sucked-out paper towards the transfer assembly. Meanwhile, the transport cam, transfer cam, and feeding cam drive the transfer assembly in a segmented manner, realizing the peristaltic transfer of the paper towards the positioning pressure plate assembly. Finally, the positioning cam drives the positioning pressure plate assembly to press the paper out of the path to the external workstation equipment. The paper-splitting cam, transport cam, positioning cam, transfer cam, and feeding cam are all coaxially set on the drive shaft, which greatly saves equipment costs. In addition, while simplifying the structure, the use of rolling bearing drive can improve the tightness of the linkage between the structures and ensure the precision of the structure, thus improving the driving accuracy of the structure and solving the problem of the complex structure and insufficient precision of the current feeder machine.

[0007] Furthermore, the transfer assembly includes a transfer frame disposed circumferentially on the drive shaft and a first rolling bearing disposed inside the transfer frame and connected to the transport cam. The transport cam is linked with the first rolling bearing to enable the transfer frame to perform a first movement trajectory.

[0008] Furthermore, the transfer assembly also includes a second trajectory drive component disposed below the transfer frame.

[0009] Furthermore, the second trajectory drive includes a second rolling bearing connected to the transfer cam, a transfer member extending along the second rolling bearing toward the side away from the transfer cam, a transfer shaft extending outward along the axial direction of the transfer member for passing through the transfer frame, and a sleeve shaft disposed circumferentially on the transfer shaft and located between the transfer frames.

[0010] Furthermore, the paper separating assembly includes a drive shaft partially embedded in the support frame, a fixing bolt extending outward along the side of the drive shaft away from the support frame, a third rolling bearing movably disposed between the fixing bolt and the drive shaft for connecting the paper separating cam, and a paper suction arm disposed on the side of the drive shaft away from the fixing bolt and moving toward or away from the paper storage spring.

[0011] Furthermore, the positioning pressure plate assembly includes a first fixed frame fixedly connected to the side of the support frame away from the drive gear, a second fixed frame fixedly connected to the top of the fixed frame, a fourth rolling bearing movably disposed on the side of the first fixed frame away from the support frame and connected to the positioning cam, a telescopic part clamped by the second fixed frame, and a fixed pressure plate disposed on the side of the telescopic part away from the second fixed frame.

[0012] Furthermore, the fixed pressure plate is located in the middle of the transfer frame and is used to press out the paper that is led out in the middle path of the transfer frame.

[0013] Furthermore, multiple hook portions extend from the support frame, and at least one elastic portion is provided between each hook portion and the paper separating assembly, the positioning pressure plate assembly, and the transfer frame. The elastic portion is used to guide the paper separating assembly, the positioning pressure plate assembly, and the transfer frame to achieve reset and rebound.

[0014] Furthermore, the paper separating cam, the transport cam, the positioning cam, the transfer cam, and the feeding cam are all coaxially arranged on the drive shaft and rotate axially around the drive shaft simultaneously. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the outer paper cam feeder in an embodiment of the present invention; Figure 2 This is a rear view structural diagram of the outer paper cam feeder in an embodiment of the present invention; Figure 3 This is a schematic diagram of the front view of the outer paper cam feeder in an embodiment of the present invention; Figure 4 This is a schematic diagram of the drive shaft assembly in the outer paper cam feeder of this invention. Figure 5 This is a partial structural diagram of the drive shaft assembly in the outer paper cam feeder of this invention. Figure 6 This is a schematic diagram of the paper separating assembly in the outer paper cam feeder of this invention. Figure 7 This is a schematic diagram of the positioning pressure plate assembly in the outer paper cam feeder of this invention.

[0016] Explanation of key component symbols:

[0017] The following detailed description of the embodiments will further illustrate the present invention in conjunction with the above-described drawings. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figures 1 to 7 The image shows an external paper feeding cam machine according to an embodiment of the present invention. It includes a support frame 1, a drive gear 2 disposed on one side of the support frame 1, a drive shaft assembly 3 movably disposed on the support frame 1 and connected at least one end to the drive gear 2, a paper separating assembly 4 and a positioning pressure plate assembly 5 respectively connected to the drive shaft assembly 3, and a paper storage clip 6 disposed above the support frame 1. The drive shaft assembly 3 includes a transmission gear 31 connected to the drive gear 2, a drive shaft 32 axially connected to the transmission gear 31, a paper separating cam 33 disposed on the side of the drive shaft 32 near the transmission gear 31 and used to drive the paper separating assembly 4, and a transport cam 34 and a positioning cam 36 sequentially disposed on the side of the drive shaft 32 away from the paper separating cam 33. The system includes a transfer cam 37 and a feeding cam 38, a transfer shaft 35 circumferentially positioned in the middle of the drive shaft 32, and a transfer assembly for transferring paper positioned circumferentially on the transfer shaft 35. The drive shaft assembly 3 is driven to rotate axially by the drive gear 2, which in turn causes the paper separating cam 33 to drive the paper separating assembly 4 to suck out the paper from the paper storage spring 6. At the same time, the transfer shaft 35 is driven to move the sucked-out paper toward the transfer assembly. Meanwhile, the transport cam 34, the transfer cam 37, and the feeding cam 38 drive the transfer assembly in a segmented manner, realizing the peristaltic transfer of the paper toward the positioning pressure plate assembly 5. Finally, the positioning cam 36 drives the positioning pressure plate assembly 5 to press the paper out of the path to the external workstation equipment.

[0022] Furthermore, the transfer assembly includes a transfer frame 310 disposed circumferentially on the drive shaft 32 and a first rolling bearing 39 disposed inside the transfer frame 310 and connected to the transport cam 34. The transport cam 34 and the first rolling bearing 39 are linked to cause the transfer frame 310 to perform a first moving trajectory. The transfer assembly also includes a second trajectory drive member disposed below the transfer frame 310. The second trajectory drive member includes a second rolling bearing 311 connected to the transfer cam 37, a transfer member 312 extending along the second rolling bearing 311 toward the side away from the transfer cam 37, and a transfer member 312 extending axially outward along the transfer member 312. The paper separating assembly 4 includes a transmission shaft 313 for passing through the transfer frame 310, and a sleeve shaft 314 disposed circumferentially on the transmission shaft 313 and located between the transfer frames 310. The paper separating assembly 4 includes a drive shaft 43 partially embedded in the support frame 1, a fixing bolt 41 extending outward along the side of the drive shaft 43 away from the support frame 1, a third rolling bearing 42 movably disposed between the fixing bolt 41 and the drive shaft 43 for connecting the paper separating cam 33, and a suction arm 44 disposed on the side of the drive shaft 43 away from the fixing bolt 41 and moving towards or away from the paper storage spring 6. In some optional embodiments, the suction arm 44 may be a drawer. The suction tube can be equipped with a negative pressure pump or vacuum pump near the drive shaft 43, which communicates with the suction tube. The positioning plate assembly 5 includes a first fixed frame 51 fixedly connected to the side of the support frame 1 away from the drive gear 2, a second fixed frame 53 fixedly connected to the top of the fixed frame 51, a fourth rolling bearing 52 movably disposed on the side of the first fixed frame away from the support frame 1 and connected to the positioning cam 36, a telescopic part 54 clamped by the second fixed frame 53, and a fixed pressure plate 55 disposed on the side of the telescopic part 54 away from the second fixed frame 53. The fixed pressure plate 55 is disposed in the middle of the transfer frame 310 for transferring... Paper is pushed out from the middle path of the transfer frame 310, and multiple hooks extend from the support frame 1. At least one elastic part 45 is added between the hook and the paper separating assembly 4, the positioning pressure plate assembly 5 and the transfer frame 310. In some optional embodiments, the elastic part 45 can be a spring to guide the paper separating assembly 4, the positioning pressure plate assembly 5 and the transfer frame 310 to achieve reset and rebound. The paper separating cam 33, the transport cam 34, the positioning cam 36, the transfer cam 37 and the feeding cam 38 are all coaxially arranged on the drive shaft 32 and rotate axially around the drive shaft 32 at the same time.

[0023] In practical implementation, the operator first places the paper into the paper storage spring clip 6 at the end away from the support frame 1. The paper slides down the paper storage spring clip 6 to a position near the support frame 1 for retrieval. Then, the drive gear 2 can be rotated. In some optional embodiments, the drive gear 2 can be driven by adding an external motor near the drive gear 2. The external motor then drives the drive gear 2 to rotate the transmission gear 31 on the brake shaft assembly 3. The transmission gear 31 drives the drive shaft 32, which is fixedly connected to it, to rotate axially. At the same time, the drive shaft 32 simultaneously drives the paper separating cam 33, the transport cam 34, the positioning cam 36, the transfer cam 37, and the feeding cam 38, which are arranged axially on its axis, to coaxially rotate. Specifically, it should be noted that before the drive shaft 32 begins to rotate, all cams are in the rest position, that is, in a separated state not in contact with any rolling bearing. Then, as the drive shaft 32 rotates, it first drives the paper separating cam 33 to rotate and reach the starting angle of the lift, that is, to move towards the direction of the third rolling bearing 42. From this angle, the paper separating cam 33 can push the third rolling bearing 42 to rotate along the drive shaft 43 along its own axial direction, thereby driving the paper suction arm 44 located on the side of the drive shaft 43 away from the fixing bolt 41 to flip towards the direction of the paper storage spring 6 and contact the bottom of the paper stored in the paper storage spring 6. At the same time, the negative pressure pump or vacuum pump located in the drive shaft 43 is turned on so that the paper suction arm 44 contacts the paper. A negative pressure suction is generated at the through hole, allowing a sheet of paper to be picked up from the bottom of the paper storage spring 6. At this time, the paper separating cam 33 enters the return angle, and the elastic part 45 pulls the drive shaft 43 back to its initial position. During this process, the suction arm 44 can transfer the suctioned paper towards the transfer shaft 35, and disconnect the suction force of the negative pressure pump or vacuum pump inside the drive shaft 43. In some optional embodiments of the present invention, the driving of the negative pressure pump and vacuum pump can be controlled by adjusting the start and stop time of the paper separating cam 33 according to the time required for it to reach the start angle of the lift and the return angle. Then, as the paper is transferred to the transfer shaft 35 and enters the process between the transfer shaft 35 and the transfer frame 310, the transport cam 34 also reaches the lift angle. The transport cam 34 drives the first rolling bearing 39 to rotate the transfer frame 310 axially along the drive shaft 32. During this process, the clamping rollers on the top of the transfer frame 310 can rotate against the outer surface of the transfer shaft 35 to push the paper on the transfer shaft 35, completing the first trajectory transfer of the paper. In some optional embodiments of the present invention, an arc-shaped push arm can also be fixedly provided axially on the side of the transport cam 34 away from the transmission gear 31, and pushed out axially upwards from both sides of the bottom of the transfer shaft 35 to push the paper on the surface of the transfer shaft 35. Immediately afterwards, during the return stroke, the paper has been transferred to the bottom of the transfer frame 310, and at the same time, the transfer cam 37 enters the lifting stroke.This drives the second rolling bearing 311 to drive the transmission component 312, causing the transmission shaft 313 to rotate along its own axial direction. During this process, the sleeve shaft 314 can also drive the transmission frame 310 to achieve short-range secondary trajectory transmission along the axis of the drive shaft 32. The plate-like structure below the transmission frame 310 enables short-range light lifting and transmission of the bottom paper. The purpose of the secondary trajectory transmission is to adjust the position of the paper located between the transmission frames 310, and at the same time, to accurately transmit the paper to the area below the positioning pressure plate assembly 5, avoiding transmission errors. Afterwards, the transmission cam 37 returns to its original position and completes the return stroke. After the feed cam 38 enters its lifting motion, it drives the fourth rolling bearing 52 to move along the Y-axis trajectory. This, in turn, drives the first fixed frame 51, the second fixed frame 52, and the telescopic part 54 to move the fixed pressure plate 55 towards or away from the bottom of the paper. The fixed pressure plate 55 then presses the paper out into the external processing station equipment. It should be noted that the external paper packaging cam feeder of this application is also connected to other external paper packaging processing station equipment. Finally, after the feed cam 38 enters its return stroke and returns to its initial position, the drive shaft assembly 3 completes one full circular motion and begins the next cycle.

[0024] In summary, the drive shaft assembly 3 is driven to rotate axially by the drive gear 2, which in turn causes the paper-splitting cam 33 to drive the paper-splitting assembly 4 to suck out the paper from the paper storage spring 6. At the same time, the drive shaft 35 drives the sucked-out paper to be transferred towards the transfer assembly. Meanwhile, the transport cam 34, the transfer cam 37, and the feeding cam 38 drive the transfer assembly in a segmented manner, realizing the peristaltic transfer of the paper towards the positioning pressure plate assembly 5. Finally, the positioning cam 36 drives the positioning pressure plate assembly 5 to press the paper out of the path to the external workstation equipment. The fact that the paper-splitting cam 33, the transport cam 34, the positioning cam 36, the transfer cam 37, and the feeding cam 38 are all coaxially set on the drive shaft 32 greatly saves equipment costs. In addition, while simplifying the structure, the use of rolling bearing drive can improve the tightness of the linkage between the structures to a certain extent, and ensure the precision of the structure and improve the driving accuracy of the structure, thus solving the problem of the complex structure and insufficient precision of the current feeder machine.

[0025] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A paper-wrapping cam feeder, characterized in that: It includes a support frame, a drive gear disposed on one side of the support frame, a drive shaft assembly movably disposed on the support frame and connected at least one end to the drive gear, a paper separating assembly and a positioning pressure plate assembly respectively connected to the drive shaft assembly, and a paper storage clip disposed above the support frame. The drive shaft assembly includes a transmission gear connected to the drive gear, a drive shaft axially connected to the transmission gear, a paper-splitting cam disposed on the drive shaft near the transmission gear and used to drive the paper-splitting assembly, a transport cam, a positioning cam, a transfer cam and a feeding cam disposed sequentially on the drive shaft away from the paper-splitting cam, a transfer shaft circumferentially disposed at the middle position of the drive shaft, and a transfer component disposed circumferentially on the transfer shaft for transferring paper; Specifically, the drive gear drives the drive shaft assembly to rotate axially, which in turn causes the paper-splitting cam to drive the paper-splitting assembly to suck out the paper from the paper storage spring. At the same time, the drive shaft drives the sucked-out paper to be transferred towards the transfer component. Meanwhile, the transport cam, the transfer cam, and the feeding cam drive the transfer component in a segmented manner, realizing the peristaltic transfer of the paper towards the positioning pressure plate assembly. Finally, the positioning cam drives the positioning pressure plate assembly to press the paper out of the path to the external workstation equipment.

2. The outer paper cam feeder according to claim 1, characterized in that: The transfer assembly includes a transfer frame disposed circumferentially on the drive shaft and a first rolling bearing disposed inside the transfer frame and connected to the transport cam. The transport cam is linked with the first rolling bearing to enable the transfer frame to perform a first movement trajectory.

3. The outer paper cam feeder according to claim 2, characterized in that: The transfer assembly also includes a second trajectory drive component disposed below the transfer frame.

4. The outer paper cam feeder according to claim 3, characterized in that: The second trajectory drive includes a second rolling bearing connected to the transfer cam, a transfer member extending along the second rolling bearing toward the side away from the transfer cam, a transfer shaft extending outward along the axial direction of the transfer member for passing through the transfer frame, and a sleeve shaft disposed circumferentially on the transfer shaft and located between the transfer frames.

5. The outer paper cam feeder according to claim 4, characterized in that: The paper separating assembly includes a drive shaft partially embedded in the support frame, a fixing bolt extending outward along the side of the drive shaft away from the support frame, a third rolling bearing movably disposed between the fixing bolt and the drive shaft for connecting the paper separating cam, and a paper suction arm disposed on the side of the drive shaft away from the fixing bolt and moving toward or away from the paper storage spring.

6. The outer paper cam feeder according to claim 5, characterized in that: The positioning pressure plate assembly includes a first fixed frame fixedly connected to the side of the support frame away from the drive gear, a second fixed frame fixedly connected to the top of the first fixed frame, a fourth rolling bearing movably disposed on the side of the first fixed frame away from the support frame and connected to the positioning cam, a telescopic part clamped by the second fixed frame, and a fixed pressure plate disposed on the side of the telescopic part away from the second fixed frame.

7. The outer paper cam feeder according to claim 6, characterized in that: The fixed pressure plate is located in the middle of the transfer frame and is used to press out the paper that is led out in the middle path of the transfer frame.

8. The outer paper cam feeder according to claim 7, characterized in that: Multiple hooks extend from the support frame, and at least one elastic part is provided between each hook and the paper separating assembly, the positioning pressure plate assembly, and the transfer frame. The elastic part is used to guide the paper separating assembly, the positioning pressure plate assembly, and the transfer frame to achieve reset and rebound.

9. The outer paper cam feeder according to claim 8, characterized in that: The paper separating cam, the positioning cam, the transport cam, the transfer cam, and the feeding cam are all coaxially arranged on the drive shaft and rotate axially around the drive shaft at the same time.

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