A paper pushing mechanism for a paper inserting machine

Abstract

The utility model discloses a kind of paper pushing mechanism for inserting paper machine, it includes support assembly, the support assembly includes base, the base top is fixedly connected with mounting seat, the mounting seat top is provided with driving assembly, the driving assembly includes motor, carousel, connecting rod, connecting block and sliding plate, the sliding plate side wall is provided with pusher assembly, the pusher assembly includes push rod, pre-press spring, connecting spring, floating plate and push head, the push head side wall is provided with horizontal pusher, this kind of paper pushing mechanism for inserting paper machine adopts crank slider drive mechanism, transmission rigidity is high, the significant quick-return characteristic is stable and reliable in operation, effectively avoid the elastic deformation, skid and wear problem of synchronous belt transmission, secondly, innovatively adopt mechanical overload protection push head, thrust adjustable, automatic tripping meets resistance, can effectively protect paper and equipment transmission component from damage, and have automatic reset function.

Description

Technical Field

[0001] This utility model relates to the field of paper pushing mechanism technology, specifically a paper pushing mechanism for a paper inserter. Background Technology

[0002] A horizontal paper inserter is a specialized device for inserting insulating paper into motor stators. Its design features a horizontal operating mode, making it suitable for processing larger stators or stators with high stacking height. The paper pushing mechanism is one of the core functional components, mainly responsible for accurately pushing the insulating paper to the target position.

[0003] Existing patent document CN218976527U discloses a paper pushing mechanism and a paper inserter, comprising a platform, a first base, a drive assembly, a push rod slide, and a push rod. The first base and the drive assembly are fixedly mounted on the platform. The output shaft of the drive assembly is parallel to a first direction D. The transmission assembly includes a drive wheel, a driven wheel, and a conveyor belt. The drive wheel is coaxially fixedly mounted on the output shaft. The driven wheel is rotatably mounted on the platform about an axis parallel to the first direction. The driven wheel and the drive wheel are arranged along a second direction D. The conveyor belt is wound around the drive wheel and the driven wheel. The push rod slide is fixedly connected to the conveyor belt. The push rod is slidably mounted on the first base along the second direction and its opposite direction, and is fixedly connected to the push rod slide. This paper pushing mechanism can effectively reduce the failure rate and facilitate maintenance. A paper inserter including this paper pushing mechanism is also provided.

[0004] While this device offers numerous advantages, it still suffers from the following problems: The timing belt itself is elastic, and during high-speed starts, stops, and reversals, it undergoes elastic deformation and hysteresis. This causes the linear displacement of the push rod to deviate from a strictly linear relationship with the motor's rotation angle, severely impacting the paper-pushing positioning accuracy. Furthermore, the timing belt drive is prone to slippage and is a wear-prone component, requiring regular maintenance and replacement, increasing operating costs and failure rates. Secondly, its push rod is a rigid structure lacking any overload protection. When encountering obstacles during paper pushing, the immense thrust acts entirely on the paper and the equipment's transmission components, easily leading to paper wrinkling and tearing, push head damage, and even a chain reaction of failures such as motor overload and burnout, or timing belt skipping and breakage. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved: In order to solve the problems of the above-mentioned drive structure defects and lack of overload protection structure, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a paper pushing mechanism for a paper inserter, which adopts a crank-slider drive mechanism, has high transmission rigidity, significant quick-return characteristics, and stable and reliable operation. It effectively avoids the elastic deformation, slippage and wear problems of synchronous belt drives. At the same time, it innovatively adopts a mechanical overload protection push head with adjustable thrust and automatic disengagement upon encountering obstruction, which can effectively protect the paper and equipment transmission components from damage and has an automatic reset function. 2. Technical Solution: To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A paper pushing mechanism for a paper inserter includes a support assembly, the support assembly including a base, a mounting seat fixedly connected to the top of the base, a drive assembly on the top of the mounting seat, the drive assembly including a motor, a turntable fixedly connected to the output end of the motor, a rotating shaft integrally formed on the side wall of the turntable, a connecting rod sleeved on the outer circumference of the rotating shaft, a pin inserted into the side wall of the connecting rod, a connecting block sleeved on the outer circumference of the pin, a sliding plate fixedly connected to the side wall of the connecting block, and a pushing assembly provided on the side wall of the sliding plate. The pushing assembly includes a push rod, a pre-compression spring is sleeved on the outer circumference of the push rod, a connecting spring is fixedly connected to the side wall of the push rod, a floating plate is fixedly connected to the side wall of the connecting spring, a push head is fixedly connected to the side wall of the floating plate, and a horizontal paper pusher is provided on the side wall of the push head.

[0008] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to the present invention, the support assembly includes a support plate, a through groove is provided on the side wall of the support plate, a slider is slidably connected to the inner side wall of the through groove, the base is fixedly connected to the bottom of the support plate, a vertical plate is fixedly connected to the side wall of the base, a switch is fixedly connected to the side wall of the vertical plate, and the switch is electrically connected to the motor.

[0009] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to the present invention, a plurality of sliders are fixedly connected to the side wall of the sliding plate, and the side wall of the sliding plate is provided with insertion holes.

[0010] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to the present invention, the connecting block has a C-shaped structure, and the inner sidewall of the connecting block has multiple slots. The inner circumference of the slots is fitted with bearings, and the inner circumference of the bearings is fitted with pins.

[0011] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to this utility model, the push rod has a threaded rod integrally formed on its side wall, the threaded rod passes through the insertion hole, an adjusting nut is threadedly connected to the outer circumference of the threaded rod, a boss is integrally formed on the outer circumference of the push rod, the preload spring is fixedly connected to the side wall of the boss, and the other end of the preload spring abuts against the sliding plate.

[0012] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to the present invention, the push rod sidewall is provided with a plurality of spherical slots, the inner sidewall of the spherical slots is embedded with steel balls, the floating plate sidewall is provided with a plurality of arc grooves, the inner sidewall of the arc grooves is in close contact with the steel balls, and the push head has a V-shaped structure.

[0013] As a preferred embodiment of the paper pushing mechanism for a paper inserter according to the present invention, a guide seat is sleeved on the outer circumference of the push rod, and the side wall of the guide seat is fixedly connected to the horizontal paper pusher.

[0014] 3. Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are: This paper-pushing mechanism for a paper inserter uses a motor-driven turntable as a crank, which in turn drives a sliding plate in a linear motion via connecting rods and connecting blocks. This constitutes a crank-slider drive mechanism, which is entirely composed of rigid structures with no elastic links in the transmission chain. This effectively improves the transmission rigidity and repeatability of positioning. At the same time, the inherent quick-return characteristic of the crank-slider mechanism makes the paper-pushing stroke smooth and the return stroke quick, significantly improving work efficiency. Compared with the synchronous belt drive used in the closest existing technology, this design fundamentally eliminates the positioning errors caused by the elastic deformation of the synchronous belt, slippage during high-speed operation, and the need for frequent tensioning and replacement after long-term use due to tensile wear. The reliability of the equipment is greatly improved. This type of paper-pushing mechanism for paper inserters integrates a mechanical overload protection mechanism consisting of a preload spring, steel balls, and a floating plate. The thrust value that triggers overload protection can be set by rotating the adjusting nut. It has wide adaptability. During normal paper pushing, the thrust is reliably transmitted through the friction between the steel balls and the spherical groove on the push rod. When the push head encounters abnormal resistance that causes the thrust to exceed the set value, the steel balls will overcome the friction and roll, forcing the floating plate and the push rod to move relative to each other, thereby interrupting the transmission of force, just like a "clutch slippage". This effectively protects the paper from being torn and prevents damage to the transmission components such as the motor and connecting rod. After the overload is eliminated, the mechanism automatically resets under the tension of the connecting spring, without the need for manual intervention, reducing downtime and improving the automation level of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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. Among them: Figure 1 This is a schematic diagram of the overall structure of a paper pushing mechanism for a paper inserter according to the present invention; Figure 2 This is a schematic diagram of the second overall structure of a paper pushing mechanism for a paper inserter according to the present invention; Figure 3 This is a schematic diagram of the support component structure of a paper pushing mechanism for a paper inserter according to the present invention; Figure 4 This is a schematic diagram of the drive assembly structure of a paper pushing mechanism for a paper inserter according to the present invention. Figure 5 This is a schematic diagram of the pushing component structure of a paper pushing mechanism for a paper inserter according to the present invention.

[0016] The following are the labeling instructions in the diagram: 100, Support assembly; 110, Base; 120, Mounting seat; 130, Support plate; 140, Slider; 150, Vertical plate; 160, Switch; 200, Drive assembly; 210, Motor; 220, Turntable; 230, Shaft; 240, Connecting rod; 250, Bearing; 260, Pin; 270, Connecting block; 271, Slot; 280, Sliding plate; 281, Hole; 300, Push assembly; 310, Push rod; 311, Boss; 312, Threaded rod; 320, Preload spring; 330, Adjusting nut; 340, Steel ball; 350, Connecting spring; 360, Floating plate; 370, Push head; 380, Guide seat; 400, Horizontal paper pusher. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, deviating from the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0019] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] The term "connection method" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; 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.

[0021] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0022] This utility model provides an overall structural schematic diagram of an embodiment of a paper pushing mechanism for a paper inserter, including: Please see Figures 1-5 This embodiment of a paper pushing mechanism for a paper inserter includes a support assembly 100, which includes a base 110 for supporting and connecting all other components. A mounting base 120 is fixedly connected to the top of the base 110 by screws for fixing and mounting a drive motor 210. A drive assembly 200 is provided on the top of the mounting base 120. The drive assembly 200 includes a motor 210. A turntable 220 is fixedly connected to the output end of the motor 210 by screws for converting the rotational motion of the motor 210 into the linear motion of the connecting block 270. A rotating shaft 230 is integrally formed and connected to the side wall of the turntable 220. A connecting rod 240 is sleeved on the outer circumference of the rotating shaft 230. A pin 260 is inserted into the side wall of the connecting rod 240. A connecting block 270 is sleeved on the outer circumference of the pin 260. A sliding plate 280 is fixedly connected to the side wall of the connecting block 270 by screws. A pushing assembly 300 is provided on the side wall of the sliding plate 280. The push assembly 300 includes a push rod 310, a preload spring 320 sleeved on the outer circumference of the push rod 310, and a connecting spring 350 fixedly connected to the side wall of the push rod 310 by screws. This connecting spring 350 is used to pull back the floating plate 360 ​​after overload, so that it reconnects with the steel ball 340 to achieve automatic reset. The floating plate 360 ​​is fixedly connected to the side wall of the connecting spring 350 by screws. The push head 370 is fixedly connected to the side wall of the floating plate 360 ​​by screws. A horizontal paper pusher 400 is provided on the side wall of the push head 370.

[0023] It is worth noting that, in order to facilitate the installation of other structures, specifically, the support assembly 100 includes a support plate 130. The support plate 130 has a through groove on its side wall. A slider 140 is slidably connected to the inner side wall of the through groove. It cooperates with the through groove to constrain the slider 280 to only make linear movements. The bottom of the support plate 130 is fixedly connected to the base 110 by screws. The side wall of the base 110 is fixedly connected to the upright plate 150 by screws. The side wall of the upright plate 150 is fixedly connected to the switch 160 by screws. The switch 160 is electrically connected to the motor 210.

[0024] Next, in order to drive, specifically, multiple sliders 140 are fixedly connected to the side wall of the sliding plate 280 by screws, and the side wall of the sliding plate 280 is provided with an insertion hole 281.

[0025] Meanwhile, in order to make the movement of the connecting block 270 smoother, the connecting block 270 has a C-shaped structure. The inner side wall of the connecting block 270 is provided with multiple slots 271 to install and fix the bearings 250. The bearings 250 are inserted into the inner circumference of the slots 271 to reduce friction and make the movement smoother. The pins 260 are inserted into the inner circumference of the bearings 250.

[0026] Furthermore, to facilitate adjustment of the compression amount of the preload spring 310, specifically, a threaded rod 312 is integrally formed on the side wall of the push rod 310. The threaded rod 312 passes through the insertion hole 281, and an adjusting nut 330 is threaded on the outer circumference of the threaded rod 312. By screwing it in and out, the compression amount of the preload spring 320 is adjusted, thereby setting the magnitude of the overload force. A boss 311 is integrally formed on the outer circumference of the push rod 310, which serves as the mounting and support surface for one end of the preload spring 320. The preload spring 320 is welded to the side wall of the boss 311 to provide a preset elastic force, which determines the trigger threshold of the overload protection. The other end of the preload spring 320 abuts against the sliding plate 280.

[0027] It is worth noting that, in order to provide overload protection for the push rod 310, the push rod 310 has multiple spherical slots 271 on its side wall, and steel balls 340 are embedded in the inner side wall of the spherical slots 271. During normal operation, the push force is transmitted through friction. In case of overload, the balls roll off and the force transmission is interrupted. The floating plate 360 ​​has multiple arc grooves on its side wall, and the inner side wall of the arc grooves is in close contact with the steel balls 340. The push head 370 has a V-shaped structure, which helps to align and push the paper.

[0028] Finally, to facilitate the movement of the push rod 310, specifically, a guide seat 380 is sleeved on the outer circumference of the push rod 310 to provide support and precise guidance for the push rod 310, ensuring its linear movement. The side wall of the guide seat 380 is fixedly connected to the horizontal paper pusher 400 by screws.

[0029] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method. Combination Figures 1-5 The paper pushing mechanism for a paper inserter according to this embodiment is used in the following specific way: 1. First, based on the required paper pushing resistance and characteristics, rotate the adjusting nut 330 to compress the preload spring (320) to an appropriate position to set the required overload protection force. The greater the force, the greater the pushing force, and the more difficult it is to trigger an overload. Start the equipment, and the motor 210 drives the turntable 220 to rotate at a constant speed. Through the linkage mechanism, the sliding plate 280 and the push rod 310 are driven to make reciprocating linear motion. Observe whether the movement trajectory of the push head 370 is smooth, and the operation can be controlled by the switch 160. 2: Place the paper to be inserted neatly into the hopper of the horizontal paper pusher 400, start the equipment, and the push rod 310 moves forward under the drive component. The thrust is transmitted to the floating plate 360 ​​and the push head 370 through the steel ball 340, and the bottom sheet of paper is pushed smoothly into the designated position. After the paper push is completed, the push rod 310 quickly returns to the initial position due to the quick return characteristic of the crank slider mechanism, ready for the next paper push cycle. 3. When the pusher head 370 encounters insurmountable resistance during its forward movement, the axial force acting on the steel ball 340 will overcome the preset force of the preload spring 320. At this time, the steel ball 340 rolls within the spherical groove, the push rod 310 continues to move forward, but the pusher head 370 stops, interrupting the force transmission and thus protecting the entire mechanism. If the equipment operator discovers the abnormality, they should stop the machine and troubleshoot the problem. After troubleshooting, the equipment should be restarted. The motor 210 reverses, the push rod 310 retracts, and under the tension of the connecting spring 350, the floating plate 360 ​​will reset and re-engage with the steel ball 340. The mechanism automatically returns to its normal working state without any manual disassembly or adjustment.

[0030] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A paper pushing mechanism for a paper inserter, characterized in that, The system includes a support assembly (100), which includes a base (110). A mounting seat (120) is fixedly connected to the top of the base (110). A drive assembly (200) is provided on the top of the mounting seat (120). The drive assembly (200) includes a motor (210). A turntable (220) is fixedly connected to the output end of the motor (210). A rotating shaft (230) is integrally formed on the side wall of the turntable (220). A connecting rod (240) is sleeved on the outer circumference of the rotating shaft (230). A pin (260) is inserted into the side wall of the connecting rod (240). A connecting block (270) is sleeved on the outer circumference of the pin (260). A sliding plate (280) is fixedly connected to the side wall of the connecting block (270). A push assembly (300) is provided on the side wall of the sliding plate (280). The pushing assembly (300) includes a push rod (310), a preload spring (320) is sleeved on the outer circumference of the push rod (310), a connecting spring (350) is fixedly connected to the side wall of the push rod (310), a floating plate (360) is fixedly connected to the side wall of the connecting spring (350), a push head (370) is fixedly connected to the side wall of the floating plate (360), and a horizontal paper pusher (400) is provided on the side wall of the push head (370).

2. The paper pushing mechanism for a paper inserter according to claim 1, characterized in that, The support assembly (100) includes a support plate (130), the side wall of the support plate (130) is provided with a through groove, the inner side wall of the through groove is slidably connected to a slider (140), the bottom of the support plate (130) is fixedly connected to the base (110), the side wall of the base (110) is fixedly connected to a vertical plate (150), the side wall of the vertical plate (150) is fixedly connected to a switch (160), and the switch (160) is electrically connected to the motor (210).

3. The paper pushing mechanism for a paper inserter according to claim 2, characterized in that, The sliding plate (280) has multiple sliders (140) fixedly connected to its side wall, and the sliding plate (280) has an insertion hole (281) on its side wall.

4. The paper pushing mechanism for a paper inserter according to claim 3, characterized in that, The connecting block (270) has a C-shaped structure. Multiple slots (271) are provided on the inner sidewall of the connecting block (270). A bearing (250) is inserted into the inner circumference of the slot (271), and the pin (260) is inserted into the inner circumference of the bearing (250).

5. The paper pushing mechanism for a paper inserter according to claim 4, characterized in that, The push rod (310) has a threaded rod (312) integrally formed on its side wall. The threaded rod (312) passes through the insertion hole (281). An adjusting nut (330) is threadedly connected to the outer circumference of the threaded rod (312). A boss (311) is integrally formed on the outer circumference of the push rod (310). The preload spring (320) is fixedly connected to the side wall of the boss (311). The other end of the preload spring (320) abuts against the sliding plate (280).

6. The paper pushing mechanism for a paper inserter according to claim 5, characterized in that, The push rod (310) has multiple spherical slots (271) on its side wall, and steel balls (340) are embedded in the inner side wall of the spherical slots (271). The floating plate (360) has multiple arc grooves on its side wall, and the inner side wall of the arc grooves is in close contact with the steel balls (340). The push head (370) has a V-shaped structure.

7. The paper pushing mechanism for a paper inserter according to claim 6, characterized in that, The outer circumferential wall of the push rod (310) is fitted with a guide seat (380), and the side wall of the guide seat (380) is fixedly connected to the horizontal paper pusher (400).

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