Self-detection supporting plate descending device for missing pages of adhesive binding machine

Abstract

The invention belongs to the technical field of glue binding machines, and discloses a glue binding machine envelope missing page self-detection supporting plate descending device which comprises a bracket, a supporting plate body is arranged in the bracket, a first baffle and a second baffle are symmetrically distributed on the top of the supporting plate body, and a detection assembly and a pressing assembly are movably installed on the front face of the second baffle. According to the invention, during actual detection, the detection assembly is enabled to shift at different angles along with the pressing assembly in cooperation with the linkage arm, meanwhile, the device can adapt to fitting shift of the wall thickness of paper, and thickness detection of different areas is rapidly completed in cooperation with the pressing assembly to press the side surface of the paper and dynamically move in different areas while thickness detection is realized. By means of numerical value change, judgment of missing pages or damaged pages and even detection of folded paper, effective detection of stacked paper is achieved through multi-area and multi-direction synchronous detection, detection of paper with different problems is used, the detection range is greatly widened, and the detection quality is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of bookbinding machines, and specifically relates to a device for automatically detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate Background Art

[0002] The device for automatically detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate is an intelligent detection mechanism for automated bookbinding equipment, mainly used to ensure the integrity of the cover and pages during the bookbinding process.

[0003] In the existing device for automatically detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate, during use, the stacked papers are usually vertically transferred to the detection supporting plate by an external clamping arm, clamped and fixed by the clamping of the two side baffles, and after being fixed stably, the thickness of the papers is detected by a laser ranging mechanism. By combining the thickness of a single sheet of paper and the set quantity, the standard paper thickness is calculated. By comparing the detected paper thickness data with the set standard paper thickness, it is judged whether there are missing pages in the papers. However, in the actual detection process, using a fixed single detection data, the actually detected thickness may not necessarily be the true thickness of the papers. And when the papers are broken, the thicknesses of different regions of the actually stacked papers are locally smaller and locally larger. However, the current method cannot accurately detect and identify, and the comprehensive detection effect is not good. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for automatically detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A device for automatically detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate, including a bracket, inside which a supporting plate body is provided. On the top of the supporting plate body, a first baffle and a second baffle are symmetrically distributed. On the front of the second baffle, a detection component and a pressing component are respectively movably installed. On the back of the pressing component, a linkage arm is fixedly connected. The other end of the linkage arm is sleeved in the detection component and abuts against the detection component. On the front of the second baffle, a suction and pulling component and a rotating offset part are fixedly provided. The suction and pulling component pulls the linkage arm, and the rotating offset part rotates and pushes the pressing component. The detection component includes a first movable disk, a mounting column, a laser ranging end, a first spring and a positioning tube. The laser ranging end is fixed on the end face of the mounting column and faces the first baffle. The pressing component includes a second movable disk, a pressing column, a second spring and a guiding disk. Two groups of adaptation chambers are symmetrically arranged on the front face of the second baffle. The detection assembly and the pressing assembly are respectively and movably installed in the two adaptation chambers. The adaptation chamber includes an assembly hole and an adaptation ring cavity. The assembly hole is formed in the front face of the second baffle. The adaptation ring cavity is formed inside the second baffle and is located outside the assembly hole. The adaptation ring cavity is communicated with the assembly hole.

[0006] Preferably, a lifting hydraulic push rod is fixedly connected inside the bracket. The movable end of the lifting hydraulic push rod is fixedly connected to the main body of the supporting plate. Hydraulic push rods are fixedly arranged on both sides of the inner wall of the bracket. The movable ends of the two hydraulic push rods are respectively fixedly connected to the first baffle and the second baffle. The two hydraulic push rods control the first baffle and the second baffle to approach and move away synchronously.

[0007] Preferably, the diameter of the first movable disc is larger than the diameter of the assembly hole and smaller than the diameter of the adaptation ring cavity. The first movable disc is movably sleeved in the adaptation ring cavity. One end of the first spring is fixed on the outer side of the first movable disc and the other end is fixed in the adaptation ring cavity. The mounting post is fixedly sleeved in the first movable disc. The positioning tube is fixedly connected to the other end of the mounting post.

[0008] Preferably, the diameter of the second movable disc is the same as the diameter of the first movable disc. The second movable disc is movably sleeved in the corresponding adaptation ring cavity. One end of the second spring is fixedly connected to the outer side of the second movable disc and the other end is fixedly connected in the adaptation ring cavity. The pressing column is fixedly sleeved in the second movable disc. One end of the pressing column is fixedly connected to the linkage arm. The other end of the linkage arm is movably sleeved in the positioning tube and contacts the end face of the mounting post. The guiding disc is fixedly sleeved on the outer side of the pressing column and is located outside the second baffle.

[0009] Preferably, the suction and pulling assembly includes a communication cavity, a vacuum pump, a fixed sleeve, a push rod, a connecting frame, an arc plate and a third spring. The vacuum pump and the vacuum pump are both fixedly connected to the front face of the second baffle. The communication cavity is formed inside the second baffle. The air outlet end of the vacuum pump is communicated with the communication cavity. The fixed sleeve is communicated with the communication cavity. One end of the push rod is movably sleeved in the fixed sleeve and the other end is fixedly connected to the connecting frame. The arc plate is fixed on the connecting frame. One end of the third spring is fixedly connected to the push rod and the other end is fixedly connected in the communication cavity. The arc plate is properly sleeved on the outer side of the linkage arm.

[0010] Preferably, the rotary offset part includes a mounting frame, a mounting ring, an outer ring, a first gear, an electric push rod and a push plate. The mounting frame is fixed to the front of the second baffle. The mounting ring is rotatably sleeved in the mounting frame. The outer ring and the first gear are both fixedly sleeved on the outer surface of the mounting ring. One end of the electric push rod is fixedly installed on the outer ring, and the movable end of the electric push rod is fixedly connected to the push plate. The push plate rotates around the outside of the guiding disc and reciprocally pushes the guiding disc, driving the pressing assembly to offset in the fitting chamber.

[0011] Preferably, the power mechanism includes a motor and a third gear. The motor is fixed to the second baffle through a motor bracket. The third gear is fixedly sleeved on the output shaft of the motor and is meshed with the first gear.

[0012] Preferably, self-rotating auxiliary clamping parts are rotatably installed on both sides of the main body of the supporting plate. A toothed plate is fixedly connected inside the bracket. The self-rotating auxiliary clamping parts are meshed with the toothed plate. Fitting grooves are formed on both sides of the main body of the supporting plate.

[0013] Preferably, the self-rotating auxiliary clamping part includes a swing plate, a rotating shaft, a torsion spring and a second gear. The swing plate is rotatably sleeved in the fitting groove. The rotating shaft is fixedly sleeved in the swing plate. The torsion spring is fixedly connected between the swing plate and the inner wall of the fitting groove. The second gear is fixedly sleeved on the outer surface of the rotating shaft. The second gear is meshed with the toothed plate.

[0014] The beneficial effects of the present invention are as follows: (1) By using the detection component, the pressing component, the suction and pulling component and the rotary offset part, during actual detection, the detection component is offset at different angles following the pressing component through the cooperation of the linkage arm, and at the same time, it can also adapt to the fitting offset of the paper wall thickness. While realizing thickness detection, the pressing component presses the side of the paper and dynamically moves in different areas, quickly completing the thickness detection of different areas. By judging through numerical changes whether there are missing pages or damaged pages, and even detecting folded papers. Through synchronous detection in multiple regions and multiple directions, effective detection of stacked papers is realized, and different problem papers are detected, greatly improving the detection range and ensuring the detection quality.

[0015] () Through the cooperation of the self-rotating auxiliary clamping part and the toothed plate, when the detected paper with defects supported is moved down, synchronous automatic clamping after lowering is realized, and the transfer is completed in cooperation with the lower moving-out clamping arm. And through self-clamping and moving out after lowering, the pretreatment of the upper external clamping arm can be synchronously completed, realizing synchronous processing. Through the lowering process, the movement, path and operation space of the moving clamping arm are reserved, greatly improving the efficiency of continuous detection and processing, facilitating targeted processing of the detected defective papers, and having good comprehensive use effects. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a front view schematic diagram of the second baffle of the present invention; Figure 3 is a rear view schematic diagram of the second baffle of the present invention; Figure 4 is a cross-sectional view schematic diagram of the second baffle, the detection component and the pressing component of the present invention; Figure 5 is a cross-sectional view schematic diagram of the second baffle and the suction and traction component of the present invention; Figure 6 is a cross-sectional view schematic diagram of the detection component of the present invention; Figure 7 is a socketing schematic diagram of the detection component and the linkage arm of the present invention; Figure 8 is a cross-sectional view schematic diagram of the pressing component and the rotary offset part of the present invention; Figure 9 is an exploded view schematic diagram of the rotary offset part of the present invention; Figure 10 is an exploded view schematic diagram of the self-rotating auxiliary clamping part and the pallet body of the present invention.

[0017] In the figure: 1. Bracket; 2. Pallet body; 3. First baffle; 4. Second baffle; 5. Detection component; 51. First movable disk; 52. Mounting column; 53. Laser ranging end; 54. First spring; 55. Positioning tube; 6. Pressing component; 61. Second movable disk; 62. Pressing column; 63. Second spring; 64. Guide disk; 7. Linkage arm; 8. Suction and traction component; 81. Communication cavity; 82. Vacuum pump; 83. Fixed sleeve; 84. Push rod; 85. Connecting frame; 86. Arc plate; 87. Third spring; 9. Rotary offset part; 91. Mounting frame; 92. Mounting ring; 93. Outer ring; 94. First gear; 95. Electric push rod; 96. Push plate; 10. Power mechanism; 11. Assembly hole; 12. Adaptation ring cavity; 13. Adaptation groove; 14. Rack; 15. Self-rotating auxiliary clamping part; 151. Swing plate; 152. Rotating shaft; 153. Torsion spring; 154. Second gear; 16. Lifting hydraulic push rod. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Such as Figures 1 to 10As shown in the figure, the embodiment of the present invention provides a device for detecting missing pages of the cover of a bookbinding machine and lowering the supporting plate, which includes a bracket 1. Inside the bracket 1, there is a supporting plate body 2. On the top of the supporting plate body 2, a first baffle 3 and a second baffle 4 are symmetrically distributed. On the front of the second baffle 4, a detection component 5 and a pressing component 6 are respectively movably installed. On the back of the pressing component 6, a linkage arm 7 is fixedly connected. The other end of the linkage arm 7 is sleeved in the detection component 5 and abuts against the detection component 5. On the front of the second baffle 4, a suction and pulling component 8 and a rotary offset part 9 are fixedly provided. The suction and pulling component 8 pulls the linkage arm 7, and the rotary offset part 9 rotates and pushes the pressing component 6. The detection component 5 includes a movable disk 51, a mounting column 52, a laser ranging end 53, a first spring 54 and a positioning tube 55. The laser ranging end 53 is fixed on the end face of the mounting column 52 and faces the first baffle 3. The pressing component 6 includes a movable disk 62, a pressing column 62, a second spring 63 and a guiding disk 64. On the front of the second baffle 4, two groups of adapted chambers are symmetrically opened. The detection component 5 and the pressing component 6 are respectively movably installed in the two adapted chambers. The adapted chamber includes an assembly hole 11 and an adapted ring cavity 12. The assembly hole 11 is opened on the front of the second baffle 4, and the adapted ring cavity 12 is opened inside the second baffle 4 and is located outside the assembly hole 11. The adapted ring cavity 12 is communicated with the assembly hole 11.

[0020] Embodiment 1: When in use, an externally connected grasping arm clamps the stacked papers and vertically places them on the top of the pallet body 2. The hydraulic push rods on both sides of the first baffle 3 and the second baffle 4 are started, so that the first baffle 3 and the second baffle 4 move synchronously and gradually clamp the stacked papers. The externally connected grasping arm synchronously moves out and resets. Initially, the end face of the pressing column 62 in the pressing assembly 6 in the second baffle 4 is aligned with the back face of the second baffle 4. At this time, the end face of the pressing column 62 is in contact with the clamped papers. The laser ranging end 53 in the detection assembly 5 is started. The laser ranging end 53 emits laser light onto the front face of the first baffle 3 and completes ranging after receiving the reflected light. At the same time, the suction and pulling assembly 8 is started. The vacuum pump 82 sucks the gas in the fixed sleeve 83 through the communication cavity 81, so that the push rod 84 is further adsorbed and sleeved into the fixed sleeve 83. While compressing the third spring 87, the arc plate 86 pulls the linkage arm 7 inwards, so that the pressing column 62 fixed at one end of the linkage arm 7 further presses the side of the papers. At the same time, the other end of the linkage arm 7 moves along the positioning tube 55 and presses the mounting column 52. The power mechanism 10 on the side of the rotary offset part 9 is started. The motor drives the first gear 94 to rotate through the third gear, so that the mounting ring 92 drives the outer ring 93 to rotate, so that the outer ring 93 drives the electric push rod 95 and the push plate 96 to rotate along the outside of the guiding disc 64. At the same time, the electric push rod 95 reciprocates, so that the push plate 96 reciprocates during rotation and reciprocates along different angles on the outside of the guiding disc 64. Under the pushing action, the pressing column 62 moves along different angles on the side of the papers. The second movable disc 61 offsets along different angles in the fitting ring cavity 12 through the second springs 63 distributed around the outer ring. At the same time, the mounting column 52 is driven to move synchronously through the linkage arm 7, and the laser ranging end 53 is synchronously moved, so as to complete the thickness measurement of different areas on the side of the stacked and clamped papers. Cooperating with the offset of the first movable disc 51 and the second movable disc 61 in the fitting ring cavity 12, when there is a missing page, as the pressing column 62 moves, the distance measured by the laser ranging end 53 between the first baffles 3 is the thickness of the papers, and the measured value remains unchanged all the time and is less than the corresponding thickness value of the set number of papers; when there is a part of a certain page of papers broken and missing, as the pressing column 62 moves, the distance measured by the laser ranging end 53 between the first baffles 3 is the thickness of the papers, and the measured value changes. The actually measured thickness value of the papers is partially equal to the corresponding thickness value of the set number of papers, and partially less than the corresponding thickness value of the set number of papers, so as to complete the quality inspection of the stacked papers before binding.

[0021] First, by utilizing the detection component 5, the pressing component 6, the suction and pulling component 8, and the rotary offset part 9, during actual detection, the detection component 5 is offset at different angles following the pressing component 6 through the cooperation of the linkage arm 7. At the same time, it can also adapt to the fitting offset of the paper wall thickness. While realizing thickness detection, it cooperates with the pressing component 6 to press the side of the paper and dynamically move in different areas, quickly completing the thickness detection of different areas. By judging from the numerical change whether there is a missing page or a damaged page, and even detecting folded papers. Through multi-region and multi-direction synchronous detection, the effective detection of stacked papers is realized, and the detection of different problematic papers is used, greatly improving the detection range and ensuring the detection quality.

[0022] Embodiment 2: When it is detected that there are defects in the vertically stacked papers, the lifting hydraulic push rod 16 is started to drive the pallet body 2 to move downward. At the same time, the clamping of the papers by the two side baffles 3 and 4 is released. The papers are restricted between the baffle 3 and the baffle 4 and move downward along between the baffle 3 and the baffle 4. At the same time, the self-rotating auxiliary clamping parts 15 on both sides of the pallet body 2 synchronously move downward along the side of the toothed plate 14. The gear 2 154 meshes with the toothed plate 14 and synchronously rotates and moves downward, so that the two side rotating shafts 152 rotate synchronously, and the two side horizontal swing plates 151 turn upward, while compressing the torsion spring 153. When the top of the paper moves out from between the baffle 3 and the baffle 4, the two swing plates 151 turn over simultaneously and clamp the paper. The external removal arm corresponding to the lower part is started, and the removal arm clamps the defective paper from below and removes the defective stacked papers through the lower space for subsequent processing. And the external grasping arm above clamps the newly stacked papers between the upper baffle 3 and the baffle 4. As the pallet body 2 moves up and resets, the next round of detection and support is carried out.

[0023] First, through the cooperation of the self-rotating auxiliary clamping part 15 and the toothed plate 14, when the detected papers with defects on the support move downward, synchronous automatic clamping after lowering the position is realized, and the transfer is completed in cooperation with the lower removal clamping arm. And through the self-clamping and removal after lowering the position, the pretreatment of the upper external clamping arm can be synchronously completed, realizing synchronous processing. Through the lowering treatment, the movement, path, and operation space of the moving clamping arm are reserved, greatly improving the efficiency of continuous detection and processing, facilitating the targeted processing of the detected defective papers, and having good comprehensive use effects.

[0024] Among them, a lifting hydraulic push rod 16 is fixedly connected inside the bracket 1. The movable end of the lifting hydraulic push rod 16 is fixedly connected to the pallet body 2. Hydraulic push rods are fixedly arranged on both sides of the inner wall of the bracket 1. The movable ends of the two hydraulic push rods are respectively fixedly connected to the baffle 3 and the baffle 4. The two hydraulic push rods control the baffle 3 and the baffle 4 to approach and move away synchronously.

[0025] The lifting hydraulic push rod 16 controls the up and down movement of the pallet body 2, and the hydraulic push rod controls the movement and approach of the first baffle 3 and the second baffle 4 to complete the initial clamping.

[0026] Among them, the diameter of the first movable disk 51 is larger than the diameter of the assembly hole 11 and smaller than the diameter of the adapter ring cavity 12. The first movable disk 51 is movably sleeved in the adapter ring cavity 12. One end of the first spring 54 is fixed on the outer side of the first movable disk 51, and the other end is fixed in the adapter ring cavity 12. The mounting post 52 is fixedly sleeved in the first movable disk 51, and the positioning tube 55 is fixedly connected to the other end of the mounting post 52.

[0027] By utilizing the offset of the first movable disk 51 on the adapter ring cavity 12 to follow and adapt to the offset movement of the second movable disk 61, and the first spring 54 is distributed in a surrounding manner, ensuring that the first movable disk 51 can be conveniently offset at different angles. The laser ranging end 53 is an existing laser ranging module, and the specific sensor model is HL6508MG.

[0028] Among them, the diameter of the second movable disk 61 is the same as that of the first movable disk 51. The second movable disk 61 is movably sleeved in the corresponding adapter ring cavity 12. One end of the second spring 63 is fixedly connected to the outer side surface of the second movable disk 61, and the other end is fixedly connected in the adapter ring cavity 12. The pressing column 62 is fixedly sleeved in the second movable disk 61. One end of the pressing column 62 is fixedly connected to the linkage arm 7. The other end of the linkage arm 7 is movably sleeved in the positioning tube 55 and contacts the end surface of the mounting post 52. The guiding disk 64 is fixedly sleeved on the outer side of the pressing column 62 and is located outside the second baffle 4.

[0029] The linkage arm 7 synchronously controls the first movable disk 51 to follow the second movable disk 61 to offset in the vertical plane and move in the horizontal plane through the pushing and pressing actions, allowing the distance from the first baffle 3 to be changed to achieve detection at different distances, and the internal width of the adapter ring cavity 12 is larger than the thicknesses of the first movable disk 51 and the second movable disk 61, ensuring that there is a moving space in the horizontal plane to achieve the detection of the paper thickness.

[0030] Among them, the suction and pulling assembly 8 includes a communication cavity 81, a vacuum pump 82, a fixed sleeve 83, a push rod 84, a connecting frame 85, an arc plate 86 and a third spring 87. The vacuum pump 82 and the vacuum pump 82 are both fixedly connected to the front surface of the second baffle 4. The communication cavity 81 is opened in the second baffle 4. The air outlet end of the vacuum pump 82 is communicated with the communication cavity 81. The fixed sleeve 83 is communicated with the communication cavity 81. One end of the push rod 84 is movably sleeved in the fixed sleeve 83, and the other end is fixedly connected to the connecting frame 85. The arc plate 86 is fixed on the connecting frame 85. One end of the third spring 87 is fixedly connected to the push rod 84, and the other end is fixedly connected to the communication cavity 81. The arc plate 86 is suitably sleeved on the outer side of the linkage arm 7.

[0031] The suction and pulling assembly 8, through negative pressure, enables the arc plate 86 to pull the linkage arm 7, ensuring that the linkage arm 7 and the pressing assembly 6 always squeeze along the paper, providing sufficient pressure at different positions to ensure the pressing detection of different regions on the sides of different papers.

[0032] Among them, the rotary offset part 9 includes a mounting frame 91, a mounting ring 92, an outer ring 93, a first gear 94, an electric push rod 95 and a push plate 96. The mounting frame 91 is fixed to the front of the second baffle 4. The mounting ring 92 is rotatably sleeved in the mounting frame 91. The outer ring 93 and the first gear 94 are both fixedly sleeved on the outer surface of the mounting ring 92. One end of the electric push rod 95 is fixedly installed on the outer ring 93, and the movable end of the electric push rod 95 is fixedly connected to the push plate 96. The push plate 96 rotates around the outside of the guide plate 64 and reciprocally pushes the guide plate 64, driving the pressing assembly 6 to offset in the fitting chamber.

[0033] During the rotation of the rotary offset part 9, it drives the rotation of the push plate 96 and the reciprocating movement of the push plate 96, pushing the guide plate 64 reciprocally at different angles, realizing different-angle and different-push offsets of the pressing assembly 6, expanding the detection range, and achieving the detection of different regions on the side of the paper.

[0034] Among them, the power mechanism 10 includes a motor and a third gear. The motor is fixed to the second baffle 4 through a motor bracket. The third gear is fixedly sleeved on the output shaft of the motor and is meshed with the first gear 94.

[0035] The power mechanism 10 provides rotational power and realizes the rotation of the rotary offset part 9 through meshing.

[0036] On both sides of the pallet body 2, self-rotating auxiliary clamping parts 15 are rotatably installed. A toothed plate 14 is fixedly connected inside the bracket 1. The self-rotating auxiliary clamping parts 15 are meshed with the toothed plate 14. Adaptation grooves 13 are formed on both sides of the pallet body 2. The self-rotating auxiliary clamping parts 15 include a swing plate 151, a rotating shaft 152, a torsion spring 153 and a second gear 154. The swing plate 151 is rotatably sleeved in the adaptation groove 13. The rotating shaft 152 is fixedly sleeved in the swing plate 151. The torsion spring 153 is fixedly connected between the swing plate 151 and the inner wall of the adaptation groove 13. The second gear 154 is fixedly sleeved on the outer surface of the rotating shaft 152. The second gear 154 is meshed with the toothed plate 14.

[0037] By utilizing the cooperation of the self-rotating auxiliary clamping parts 15 and the toothed plate 14, when the lifting hydraulic push rod 16 controls the pallet body 2 to move downward, the active swing of the self-rotating auxiliary clamping parts 15 is realized, and the paper is clamped and positioned on the side after moving downward, facilitating the clamping and transfer in cooperation with the moving clamping arm below after descending.

[0038] Working principle and usage process of the present invention: During use, an externally connected grasping arm clamps and vertically places the stacked papers on the top of the pallet body 2. The hydraulic push rods on both sides of the first baffle 3 and the second baffle 4 are started, so that the first baffle 3 and the second baffle 4 move synchronously and gradually clamp the stacked papers. The externally connected grasping arm synchronously moves out and resets. In the initial state, the end face of the pressing column 62 in the pressing assembly 6 in the second baffle 4 is aligned with the back face of the second baffle 4. At this time, the end face of the pressing column 62 is in contact with the clamped papers. The laser ranging end 53 in the detection assembly 5 is started. The laser ranging end 53 emits laser light onto the front face of the first baffle 3 and completes ranging after receiving the reflected light. At the same time, the suction and pulling assembly 8 is started. The vacuum pump 82 sucks the gas in the fixed sleeve 83 through the communication cavity 81, so that the push rod 84 is further adsorbed and sleeved into the fixed sleeve 83. While compressing the third spring 87, the arc plate 86 pulls the linkage arm 7 inwards, so that the pressing column 62 fixed at one end of the linkage arm 7 further presses the side of the papers. At the same time, the other end of the linkage arm 7 moves along the positioning tube 55 and presses the mounting column 52. The power mechanism 10 on the side of the rotary offset part 9 is started. The motor drives the first gear 94 to rotate through the third gear, so that the mounting ring 92 drives the outer ring 93 to rotate, so that the outer ring 93 drives the electric push rod 95 and the push plate 96 to rotate along the outside of the guiding disc 64. At the same time, the electric push rod 95 reciprocates, so that the push plate 96 reciprocates during rotation and reciprocally pushes along different angles on the outside of the guiding disc 64. Under the pushing action, the pressing column 62 moves along different angles on the side of the papers. The second movable disc 61 offsets along different angles in the fitting ring cavity 12 through the second springs 63 distributed around the outer side. At the same time, the mounting column 52 is synchronously moved through the linkage arm 7, and the laser ranging end 53 is synchronously moved, so as to complete the thickness measurement of different areas on the side of the stacked and clamped papers. Cooperating with the offset of the first movable disc 51 and the second movable disc 61 in the fitting ring cavity 12, when there is a missing page, as the pressing column 62 moves, the distance measured by the laser ranging end 53 between the first baffles 3 is the paper thickness, and the measured value remains unchanged all the time and is less than the corresponding thickness value of the set number of papers; when there is a part of a certain page of paper broken and missing, as the pressing column 62 moves, the distance measured by the laser ranging end 53 between the first baffles 3 is the paper thickness, and the measured value changes. The actually measured paper thickness value has a part equal to the corresponding thickness value of the set number of papers, and a part of the area is less than the corresponding thickness value of the set number of papers, so as to complete the quality inspection of the stacked papers before binding;After detecting a defect in the vertically stacked paper, the lifting hydraulic push rod 16 is activated to drive the pallet body 2 to move downward. At the same time, the clamping of the paper by the two side baffles 3 and 4 is released. The paper is restricted between the baffle 3 and the baffle 4 and moves downward along the space between the baffle 3 and the baffle 4. At the same time, the self-rotating auxiliary clamping parts 15 on both sides of the pallet body 2 move downward synchronously along the side surface of the toothed plate 14. The second gear 154 meshes with the toothed plate 14 and rotates downward synchronously, so that the two side rotating shafts 152 rotate synchronously, and the two side horizontal swing plates 151 turn upward, while compressing the torsion spring 153. When the top of the paper moves out from between the baffle 3 and the baffle 4, the two swing plates 151 turn over simultaneously and clamp the paper. The corresponding removal arm below is activated. The removal arm clamps the defective paper from below and removes the defective stacked paper through the lower space for subsequent processing. And the upper external grasping arm clamps the newly stacked paper between the upper baffle 3 and the baffle 4. As the pallet body 2 moves upward and resets, the next round of detection and support is carried out.;

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Self-detection and lowering device for missing pages of the cover of a bookbinding machine, comprising a bracket (1), characterized in that: Inside the bracket (1), there is a pallet body (2). On the top of the pallet body (2), a first baffle (3) and a second baffle (4) are symmetrically distributed. On the front of the second baffle (4), a detection component (5) and a pressing component (6) are respectively movably installed. On the back of the pressing component (6), a linkage arm (7) is fixedly connected. The other end of the linkage arm (7) is sleeved in the detection component (5) and abuts against the detection component (5). On the front of the second baffle (4), a suction and pulling component (8) and a rotary offset part (9) are fixedly provided. The suction and pulling component (8) pulls the linkage arm (7), and the rotary offset part (9) rotates and pushes the pressing component (6). The detection component (5) includes a first movable disk (51), a mounting post (52), a laser ranging end (53), a first spring (54), and a positioning tube (55). The laser ranging end (53) is fixed on the end face of the mounting post (52) and faces the first baffle (3). The pressing component (6) includes a second movable disk (61), a pressing post (62), a second spring (63), and a guiding disk (64). On the front of the second baffle (4), two groups of matching chambers are symmetrically opened. The detection component (5) and the pressing component (6) are respectively movably installed in the two matching chambers. The matching chamber includes an assembly hole (11) and a matching ring cavity (12). The assembly hole (11) is opened on the front of the second baffle (4), and the matching ring cavity (12) is opened inside the second baffle (4) and is located outside the assembly hole (11). The matching ring cavity (12) communicates with the assembly hole (11).

2. The self-detection and under-positioning device for the missing pages of the cover of a bookbinding machine according to claim 1, characterized in that: Inside the bracket (1), a lifting hydraulic push rod (16) is fixedly connected. The movable end of the lifting hydraulic push rod (16) is fixedly connected to the pallet body (2). On both sides of the inner wall of the bracket (1), hydraulic push rods are fixedly provided. The movable ends of the two hydraulic push rods are respectively fixedly connected to the first baffle (3) and the second baffle (4). The two hydraulic push rods control the first baffle (3) and the second baffle (4) to approach and move away synchronously.

3. The self-detection and platen lowering device for missing pages of the cover in a bookbinding machine according to claim 2, characterized in that: The diameter of the first movable disk (51) is larger than the diameter of the assembly hole (11) and smaller than the diameter of the matching ring cavity (12). The first movable disk (51) is movably sleeved in the matching ring cavity (12). One end of the first spring (54) is fixed on the outside of the first movable disk (51), and the other end is fixed in the matching ring cavity (12). The mounting post (52) is fixedly sleeved in the first movable disk (51). The positioning tube (55) is fixedly connected to the other end of the mounting post (52).

4. The missing-page self-detection and platen lowering device for the bookbinding machine cover according to claim 3, wherein: The diameter of the second movable disk (61) is the same as that of the first movable disk (51). The second movable disk (61) is movably sleeved in the corresponding adapter ring cavity (12). One end of the second spring (63) is fixedly connected to the outer side surface of the second movable disk (61), and the other end is fixedly connected in the adapter ring cavity (12). The pressing column (62) is fixedly sleeved in the second movable disk (61). One end of the pressing column (62) is fixedly connected to the linkage arm (7). The other end of the linkage arm (7) is movably sleeved in the positioning tube (55) and contacts the end face of the mounting column (52). The guiding disk (64) is fixedly sleeved outside the pressing column (62) and is located outside the second baffle (4).

5. The self-detection and platen lowering device for missing pages of the bookbinding cover according to claim 4, characterized in that: The suction and pulling assembly (8) includes a communication cavity (81), a vacuum pump (82), a fixed sleeve (83), a push rod (84), a connecting frame (85), an arc plate (86) and a third spring (87). The vacuum pump (82) and the vacuum pump (82) are both fixedly connected to the front of the second baffle (4). The communication cavity (81) is opened inside the second baffle (4). The air outlet end of the vacuum pump (82) is communicated with the communication cavity (81). The fixed sleeve (83) is communicated with the communication cavity (81). One end of the push rod (84) is movably sleeved in the fixed sleeve (83), and the other end is fixedly connected to the connecting frame (85). The arc plate (86) is fixed on the connecting frame (85). One end of the third spring (87) is fixedly connected to the push rod (84), and the other end is fixedly connected in the communication cavity (81). The arc plate (86) is suitably sleeved outside the linkage arm (7).

6. The self-detection and platen lowering device for missing pages of the cover in a bookbinding machine according to claim 5, characterized in that: The rotary offset part (9) includes a mounting frame (91), a mounting ring (92), an outer ring (93), a first gear (94), an electric push rod (95) and a push plate (96). The mounting frame (91) is fixed to the front of the second baffle (4). The mounting ring (92) is rotatably sleeved in the mounting frame (91). The outer ring (93) and the first gear (94) are both fixedly sleeved on the outer surface of the mounting ring (92). One end of the electric push rod (95) is fixedly installed on the outer ring (93), and the movable end of the electric push rod (95) is fixedly connected to the push plate (96). The push plate (96) rotates around the outside of the guiding disk (64) and reciprocally pushes the guiding disk (64), driving the pressing assembly (6) to offset in the adapter chamber.

7. The self-detection and under-positioning device for the missing page of the cover of the bookbinding machine according to claim 1, characterized in that: The power mechanism (10) includes a motor and a third gear. The motor is fixed to the second baffle (4) through a motor frame. The third gear is fixedly sleeved on the output shaft of the motor and is meshed with the first gear (94).

8. The self-detection and under-positioning device for the missing cover pages of a bookbinding machine according to claim 7, characterized in that: Self-rotating auxiliary clamping parts (15) are rotatably installed on both sides of the tray body (2). A toothed plate (14) is fixedly connected inside the bracket (1). The self-rotating auxiliary clamping parts (15) are meshed with the toothed plate (14). Adaptation grooves (13) are opened on both sides of the tray body (2).

9. The self-detection and lowering device for the missing cover pages of the bookbinding machine according to claim 8, wherein: The self-rotating auxiliary clamping part (15) includes a swing plate (151), a rotating shaft (152), a torsion spring (153) and a second gear (154). The swing plate (151) is rotatably sleeved in the fitting groove (13). The rotating shaft (152) is fixedly sleeved in the swing plate (151). The rotating shaft (152) is rotatably sleeved in the swing plate (151). The torsion spring (153) is fixedly connected between the swing plate (151) and the inner wall of the fitting groove (13). The second gear (154) is fixedly sleeved on the outer surface of the rotating shaft (152). The second gear (154) is meshed and connected with the toothed plate (14).

Images