Cam driving type book conveying mechanism

Abstract

The utility model discloses a cam driving type book conveying mechanism which comprises an installation frame, a cam driving assembly, a clamping jaw assembly, a first lifting rod, a second lifting rod, a third lifting rod, a clamping jaw moving plate and a clamping jaw moving assembly. The first lifting rod, the second lifting rod and the third lifting rod are arranged on the upper side of the mounting frame in the horizontal direction and are in transmission connection with the cam driving assembly, the clamping jaw moving plate is slidably arranged on the upper side of the mounting frame in the horizontal direction, and every two clamping jaw assemblies are arranged on the clamping jaw moving plate at intervals; the clamping jaw moving assembly is arranged on one side of the mounting frame and is in transmission connection with the clamping jaw moving plate. The cam driving mode adopted by the utility model is more stable and reliable in structure and is not limited by air pressure stability, the cam action is more flexible and efficient, and the book transportation efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of loose-leaf binder production technology, and in particular to a cam-driven binder transport mechanism. Background Technology

[0002] In the production of loose-leaf binders such as spiral notebooks and desk calendars, these notebooks need to be transported in groups. Currently available solutions involve a gripper mechanism that reciprocates on a horizontally positioned track. When the grippers are a certain distance from the notebook, the main control cylinder and the upper gripper cylinder extend in advance. As the notebook continues to move forward, once the grippers can clamp onto it, two separate cylinders drive the upper and lower grippers to hold the notebook and drag it forward, thus transporting it to the next workstation. After transport, the upper and lower grippers release the notebook under the control of the separate cylinders. The entire gripping mechanism then moves backward a certain distance until it reaches a position where it no longer interferes with the notebook. The main control cylinder and the upper gripper cylinder then drive the entire gripping mechanism and the upper gripper cylinder to descend to the bottom of the panel, and then reset, ready for the next transport operation.

[0003] The above-mentioned transportation methods for this booklet have certain shortcomings:

[0004] 1. The entire gripper mechanism is driven by three cylinders (one main control cylinder and two sub-cylinders). Due to the influence of air pressure, the stroke and clamping force of the cylinders are not stable enough.

[0005] Second, the clamping action is too complicated, and the reciprocating motion of the cylinder is slow, which affects the production speed.

[0006] Third, the current method uses a single-sided clamping mechanism, which only clamps and fixes the book on one side. Therefore, the clamping and transportation process of the book is not stable enough.

[0007] In conclusion, the existing cylinder-driven book transport structure needs improvement. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model discloses a cam-driven book transport mechanism, including a mounting frame, a cam drive assembly, a gripper assembly, a first lifting rod, a second lifting rod, a third lifting rod, a gripper moving plate, and a gripper moving assembly. The cam drive assembly is disposed on the lower side of the mounting frame. The first, second, and third lifting rods are all disposed on the upper side of the mounting frame in a horizontal direction and are respectively connected to the cam drive assembly. The gripper moving plate is slidably disposed on the upper side of the mounting frame in a horizontal direction. The gripper assemblies are disposed on the gripper moving plate in pairs at intervals. The gripper moving assembly is disposed on one side of the mounting frame and is connected to the gripper moving plate in a drive.

[0009] Furthermore, the cam drive assembly includes a drive motor, a first cam, a second cam, and a third cam. The drive motor is fixedly mounted on the mounting bracket. The first cam, the second cam, and the third cam are coaxially arranged and all are driven by the drive motor. The first cam is driven by a support rod and a first lifting rod. The second cam and the third cam are driven by a connecting rod assembly and a second lifting rod and a third lifting rod, respectively.

[0010] Furthermore, the linkage assembly includes a first rocker arm, a second rocker arm, and a connecting rod. One end of the first rocker arm is in movable contact with the surface of the second cam / third cam, and the other end is rotatably connected to the connecting rod. The other end of the connecting rod is rotatably connected to the second rocker arm, and the other end of the second rocker arm is rotatably connected to the second lifting rod / third lifting rod. The middle position of the first rocker arm is rotatably connected to the mounting bracket via a first rotating shaft, and the middle position of the second rocker arm is rotatably connected to the mounting bracket via a second rotating shaft.

[0011] Furthermore, tension springs are provided at the lower end of the support rod and at one end of the first and second swing rods.

[0012] Furthermore, the gripper assembly includes a fixed base, an upper gripper, a lower gripper, a gripper swing arm, a guide post, and a limiting sleeve. The fixed base is disposed on one side of the gripper moving plate. The lower end of the upper gripper is rotatably connected to one end of the gripper swing arm, and the other end of the gripper swing arm is rotatably connected to the fixed base. The lower gripper is slidably connected to the fixed base longitudinally via a first slider. One end of the guide post is rotatably connected to the fixed base. One end of the limiting sleeve is rotatably connected to the lower end of the upper gripper, and the other end of the guide post is slidably connected to the limiting sleeve. A first compression spring is provided longitudinally between the gripper swing arm and the fixed base, and a second compression spring is sleeved on the outside of the guide post.

[0013] Furthermore, a first roller is provided on the first slider via a second slider that slides laterally, a second roller is provided at the lower end of the upper gripper, and a third roller is provided on the lower side of one end of the gripper swing arm.

[0014] Furthermore, the side of the first lifting rod is provided with a guide rail that is movably connected to the first roller.

[0015] Furthermore, the gripper moving assembly includes a servo motor, a lead screw, a lead screw nut, and a connecting block. The lead screw is arranged horizontally on one side of the mounting frame. The servo motor is connected to the lead screw via a transmission. The lead screw nut is sleeved on the lead screw and connected to the gripper moving plate via the connecting block.

[0016] Furthermore, the gripper moving plate is provided with a plurality of adjustment grooves spaced laterally along the side, and an installation strip is provided on the lower side of the adjustment groove. The gripper assembly passes through the adjustment groove and is connected to the installation strip.

[0017] Furthermore, a fourth roller is provided at the position where the lower end of the support rod contacts the first cam, at the position where the first rocker arm contacts the second cam, and at the position where the second rocker arm contacts the third cam.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention uses a cam drive assembly to periodically raise and lower the first, second, and third lifting rods, thereby driving the gripper assembly to grip the book. The gripper moving assembly then moves the gripper, thus transporting the book. Compared to the traditional cylinder drive method, the cam drive method used in this invention is more stable and reliable, not limited by air pressure stability, and the cam action is more flexible and efficient, effectively improving the book transport efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention;

[0023] Figure 3 This is a partial structural schematic diagram of the cam drive assembly in this utility model;

[0024] Figure 4 This is a partial structural diagram of the gripper assembly in this utility model;

[0025] Figure 5 This is a schematic diagram of the initial state of the gripper assembly in this utility model;

[0026] Figure 6 This is a schematic diagram of the working state of the gripper assembly in this utility model.

[0027] Figure label:

[0028] 10-Mounting rack;

[0029] 20-Cam drive assembly, 21-Drive motor, 22-First cam, 23-Second cam, 24-Third cam, 25-Support rod, 26-Linkage assembly, 261-First rocker arm, 262-Second rocker arm, 263-Linkage, 264-First pivot, 265-Second pivot, 27-Fourth roller, 28-Tension spring;

[0030] 30-Gripper assembly, 31-Fixed base, 32-Upper gripper, 33-Lower gripper, 34-Gripper swing arm, 35-Guide post, 36-Limit sleeve, 37-Third rotating shaft, 38-Fourth rotating shaft, 39-First slider, 310-Fifth rotating shaft, 311-Through groove, 312-First compression spring, 313-Second compression spring, 314-Second slider, 315-First roller, 316-Second roller, 317-Third roller;

[0031] 40 - First lifting rod; 41 - Guide rail;

[0032] 50 - Second lifting boom;

[0033] 60 - Third lifting boom;

[0034] 70-Gripper moving plate, 71-First guide rail, 72-First slider, 73-Adjustment groove, 74-Mounting strip;

[0035] 80-Gripper moving assembly, 81-Servo motor, 82-Lead screw, 83-Lead nut, 84-Connecting block. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0039] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] like Figure 1-2 As shown, the cam-driven book transport mechanism in this embodiment includes a mounting frame 10, a cam drive assembly 20, a gripper assembly 30, a first lifting rod 40, a second lifting rod 50, a third lifting rod 60, a gripper moving plate 70, and a gripper moving assembly 80. The cam drive assembly 20 is disposed on the lower side of the mounting frame 10. The first lifting rod 40, the second lifting rod 50, and the third lifting rod 60 are all disposed on the upper side of the mounting frame 10 in a horizontal direction and are respectively connected to the cam drive assembly 20. The gripper moving plate 70 is slidably disposed on the upper side of the mounting frame 10 in a horizontal direction via a first guide rail 71 and a first slider 72. The gripper assemblies 30 are disposed on the gripper moving plate 70 in pairs at intervals. The gripper moving assembly 80 is disposed on one side of the mounting frame 10 and is connected to the gripper moving plate 70 in a transmission connection.

[0041] The gripper moving assembly 80 includes a servo motor 81, a lead screw 82, a lead screw nut 83, and a connecting block 84. The lead screw 82 is arranged horizontally on one side of the mounting frame 10. The servo motor 81 is connected to the lead screw 82 for transmission. The lead screw nut 83 is sleeved on the lead screw 82 and connected to the gripper moving plate 70 through the connecting block 84.

[0042] The gripper assemblies 30 are arranged in pairs to simultaneously grip both ends of the booklet, thereby improving the stability of gripping and transportation. One gripper assembly 30 can be fixedly mounted on the gripper moving plate 70, while the other gripper assembly 30 can be movably mounted on the gripper moving plate 70. Specifically, the gripper moving plate 70 has multiple adjusting grooves 73 spaced laterally along its horizontal direction. An installation strip 74 is provided on the lower side of the adjusting groove 73, and the gripper assembly 30 passes through the adjusting groove 73 and connects to the installation strip 74. By adjusting the position of the gripper assembly 30 in the adjusting groove 73, the distance between the two gripper assemblies 30 can be adjusted to meet the transportation needs of booklets of different sizes.

[0043] like Figure 3 As shown, the cam drive assembly 20 includes a drive motor 21, a first cam 22, a second cam 23, and a third cam 24. The drive motor 21 is fixedly mounted on the mounting bracket 10. The first cam 22, the second cam 23, and the third cam 24 are coaxially arranged and are all connected to the drive motor 21 for transmission. The connection method can adopt a transmission structure such as a sprocket chain, a synchronous belt pulley, or a gear.

[0044] The first cam 22 is connected to the first lifting rod 40 via a support rod 25, and the second cam 23 and the third cam 24 are connected to the second lifting rod 50 and the third lifting rod 60 via two sets of connecting rod assemblies 26, respectively.

[0045] The linkage assembly 26 includes a first rocker arm 261, a second rocker arm 262, and a connecting rod 263. One end of the first rocker arm 261 is in movable contact with the surface of the second cam 23 / third cam 24, and the other end is rotatably connected to the connecting rod 263. The other end of the connecting rod 263 is rotatably connected to the second rocker arm 262. The other end of the second rocker arm 262 is rotatably connected to the second lifting rod 50 / third lifting rod 60. The middle position of the first rocker arm 261 is rotatably connected to the mounting bracket 10 through the first rotating shaft 264, and the middle position of the second rocker arm 262 is rotatably connected to the mounting bracket 10 through the second rotating shaft 265.

[0046] The lower end of the support rod 25 is provided with a fourth roller 27 at the position where it contacts the first cam 22, the position where the first rocker arm 261 contacts the second cam 23, and the position where the second rocker arm 262 contacts the third cam 24, so that the above-mentioned rods and cams can make the contact between them smoother.

[0047] A tension spring 28 is provided at the lower end of the support rod 25 and at one end of the first rocker arm 261 and the second rocker arm 262. One end of the tension spring 28 is connected to the mounting bracket 10, and the other end is connected to one end of the support rod 25 and the two rocker arms, so as to provide a downward pulling force for the support rod 25 and the two rocker arms, so that the fourth roller 27 is always in close contact with the outer edge of each cam.

[0048] like Figure 4 As shown, the gripper assembly 30 includes a fixed base 31, an upper gripper 32, a lower gripper 33, a gripper swing arm 34, a guide post 35, and a limiting sleeve 36. The fixed base 31 is disposed on one side of the gripper moving plate 70. The lower end of the upper gripper 32 is rotatably connected to one end of the gripper swing arm 34 via a third rotating shaft 37. The other end of the gripper swing arm 34 is rotatably connected to the fixed base 31 via a fourth rotating shaft 38. The lower gripper 33 is slidably connected to the fixed base 31 longitudinally via a first slider 39.

[0049] One end of the guide post 35 is rotatably connected to the fixed base 31 via the fourth rotating shaft 38, one end of the limiting sleeve 36 is rotatably connected to the lower end of the upper jaw 32 via the fifth rotating shaft 310, the other end of the guide post 35 is slidably connected to the limiting sleeve 36, and the lower side of the upper jaw 33 is also provided with a through groove 311 for the limiting sleeve 36 to move.

[0050] A first compression spring 312 is provided longitudinally between the gripper arm 34 and the fixed base 31. A second compression spring 313 is sleeved on the outer side of the guide post 35 at the position between the fourth rotating shaft 38 and the limiting sleeve 36, and the elastic force of the first compression spring 312 is greater than the elastic force of the second compression spring 313.

[0051] A first roller 315 is slidably disposed on the outer end face of the first slider 39 via the second slider 314. A second roller 316 is disposed at the lower end of the upper gripper 32. A third roller 317 is disposed on the lower side of one end of the gripper swing arm 34. A guide rail 41 is disposed on the side of the first lifting rod 40 and is movably connected to the first roller 315.

[0052] like Figure 5 As shown, in the initial state, the upper jaw 32 is tilted, the lower jaw 33 is located on the lower part of the fixed seat 31, the proximal end of the first cam 22 is in contact with the support rod 25, at which time the first lifting rod 40 is in the lowest position, the proximal end of the second cam 23 is in contact with the first rocker arm 261, at which time the second lifting rod 50 is in the lowest position, and the proximal end of the third cam 24 is in contact with the second rocker arm 262, at which time the third lifting rod 60 is in the lowest position.

[0053] When the booklet is transported to the gripper station, the drive motor 21 drives the first cam 22, the second cam 23 and the third cam 24 to rotate synchronously. First, the distal end of the first cam 22 reaches the highest position, pushing the first lifting rod 40 upward. Since the side of the first lifting rod 40 is provided with a guide rail 41 that is movably connected to the first roller 315, the guide rail 41 will drive the first roller 315 and the second slider 314 to move upward along the fixed seat 31 under the action of the first slider 39, moving the lower gripper 33 to the highest position and holding it for a period of time.

[0054] Subsequently, the distal ends of the second cam 23 and the third cam 24 also reach their highest positions, lifting the second lifting rod 50 and the third lifting rod 60 to their highest positions. The second lifting rod 50 further lifts the gripper arm 34 upwards. Since the lower end of the upper gripper 32 is rotatably connected to the gripper arm 34 and the limiting sleeve 36 respectively, during the process of the gripper arm 34 being lifted upwards, the upper gripper 32 will rotate upwards and stand upright around the fifth rotating shaft 310, forming a shape like... Figure 6 The state shown.

[0055] As the second cam 23 and the third cam 24 continue to rotate, their distal ends gradually move away from the highest position, while the distal end of the first cam 22 remains at the highest position. The second lifting rod 50 and the third lifting rod 60 begin to descend. Under the action of the first compression spring 312 and the second compression spring 313, the first compression spring 312 presses down on the gripper arm 34, and the second compression spring 313 pushes the upper gripper 32 to one side, keeping it in an upright position. At this time, the second compression spring 313 is in a fully extended state, so the upper gripper 32 will be pressed downward while upright, and the distance between the upper gripper 32 and the lower gripper 33 will decrease, thereby clamping the book located between them.

[0056] After the two ends of the book are clamped by the two sets of gripper assemblies 30, the gripper moving assembly 80 starts to move. The servo motor 81 drives the gripper moving plate 70 to move laterally through the lead screw 82 and lead nut 83, so as to transport the book to the next work station.

[0057] After the transport is completed, as the first cam 22 continues to rotate, its distal end gradually moves away from the highest position. The guide rail 41 drives the lower gripper 33 to move downward and reset. Since the elastic force of the first compression spring 312 is greater than that of the second compression spring 313, the gripper arm 34 will be pressed further downward, causing the upper gripper 32 to flip downward around the fifth rotating shaft 310 and reset. At this time, both the upper gripper 32 and the lower gripper 33 have been reset and the book has been completely released. The gripper moving assembly 80 moves again to reset the gripper assembly 30 as a whole, in preparation for the next book clamping and transport operation.

[0058] The above method enables continuous and periodic transportation of this book. Compared with the traditional cylinder-driven method, the cam-driven method adopted by this utility model has a more stable and reliable structure, is not limited by air pressure stability, and the cam movement is more flexible and efficient, effectively improving the transportation efficiency of this book.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A cam-driven book transport mechanism, characterized in that: The device includes a mounting frame, a cam drive assembly, a gripper assembly, a first lifting rod, a second lifting rod, a third lifting rod, a gripper moving plate, and a gripper moving assembly. The cam drive assembly is located on the lower side of the mounting frame. The first, second, and third lifting rods are all horizontally located on the upper side of the mounting frame and are respectively connected to the cam drive assembly. The gripper moving plate is slidably located on the upper side of the mounting frame in a horizontal direction. The gripper assemblies are arranged in pairs on the gripper moving plate. The gripper moving assembly is located on one side of the mounting frame and is connected to the gripper moving plate.

2. The cam-driven book transport mechanism according to claim 1, characterized in that: The cam drive assembly includes a drive motor, a first cam, a second cam, and a third cam. The drive motor is fixedly mounted on a mounting bracket. The first cam, the second cam, and the third cam are coaxially arranged and all are driven by the drive motor. The first cam is driven by a support rod and a first lifting rod. The second cam and the third cam are driven by a connecting rod assembly and a second lifting rod and a third lifting rod, respectively.

3. The cam-driven book transport mechanism according to claim 2, characterized in that: The linkage assembly includes a first rocker arm, a second rocker arm, and a connecting rod. One end of the first rocker arm is in movable contact with the surface of the second / third cam, and the other end is rotatably connected to the connecting rod. The other end of the connecting rod is rotatably connected to the second rocker arm, and the other end of the second rocker arm is rotatably connected to the second / third lifting rod. The middle position of the first rocker arm is rotatably connected to the mounting bracket via a first rotating shaft, and the middle position of the second rocker arm is rotatably connected to the mounting bracket via a second rotating shaft.

4. The cam-driven book transport mechanism according to claim 3, characterized in that: The lower end of the support rod and one end of the first and second swing rods are each equipped with a tension spring.

5. The cam-driven book transport mechanism according to claim 1, characterized in that: The gripper assembly includes a fixed base, an upper gripper, a lower gripper, a gripper swing arm, a guide post, and a limiting sleeve. The fixed base is disposed on one side of the gripper moving plate. The lower end of the upper gripper is rotatably connected to one end of the gripper swing arm, and the other end of the gripper swing arm is rotatably connected to the fixed base. The lower gripper is slidably connected to the fixed base longitudinally via a first slider. One end of the guide post is rotatably connected to the fixed base. One end of the limiting sleeve is rotatably connected to the lower end of the upper gripper, and the other end of the guide post is slidably connected to the limiting sleeve. A first compression spring is provided longitudinally between the gripper swing arm and the fixed base, and a second compression spring is sleeved on the outside of the guide post.

6. The cam-driven book transport mechanism according to claim 5, characterized in that: A first roller is provided on the first slider and slides laterally via a second slider. A second roller is provided at the lower end of the upper gripper, and a third roller is provided on the lower side of one end of the gripper arm.

7. The cam-driven book transport mechanism according to claim 6, characterized in that: The side of the first lifting rod is provided with a guide rail that is movably connected to the first roller.

8. The cam-driven book transport mechanism according to claim 1, characterized in that: The gripper moving assembly includes a servo motor, a lead screw, a lead screw nut, and a connecting block. The lead screw is arranged horizontally on one side of the mounting frame. The servo motor is connected to the lead screw via a transmission. The lead screw nut is sleeved on the lead screw and connected to the gripper moving plate via the connecting block.

9. The cam-driven book transport mechanism according to claim 8, characterized in that: The gripper moving plate is provided with multiple adjustment slots spaced laterally along its side, and an installation strip is provided on the lower side of the adjustment slot. The gripper assembly passes through the adjustment slot and is connected to the installation strip.

10. The cam-driven book transport mechanism according to claim 3, characterized in that: The lower end of the support rod is provided with a fourth roller at the position where it contacts the first cam, the position where the first rocker arm contacts the second cam, and the position where the second rocker arm contacts the third cam.

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