Foreign matter preventing mechanism of paper conveying machine

Abstract

The utility model discloses a foreign matter prevention mechanism of a paper conveying machine, which relates to the technical field of paper conveying machine equipment and comprises a bumper and a strong magnet, the bumper and the strong magnet are transversely arranged above a conveying platform and are fixed on an installation fixing block, the bumper is arranged in front of the strong magnet, and the strong magnet is arranged in front of the bumper. A space for paper to pass through is arranged below the bumper, the height of the space is limited to be higher than that of the bottom of the bumper, the installation fixing block is fixedly connected to the positioning square block and forms a lever structure through a rotating pin, the positioning square block abuts against the trigger end of the microswitch, and the microswitch is connected to the alarm. The utility model provides a foreign matter preventing mechanism of a paper conveying machine, which can be used for processing large foreign matters and metal foreign matters and can give an alarm when the foreign matters are stuck.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper feeding machine equipment technical field, concretely relates to a paper feeding machine prevents foreign matter mechanism. BACKGROUND

[0002] When the paper feeding machine works, single paper is continuously fed to the main machine in an overlapped way, in order to prevent foreign matters such as screws, pins and other metal objects from entering the main machine with the paper, a baffle is installed at the front end of the paper feeding table plate, and there is a space of 3-5mm between the baffle and the paper feeding table plate, so that the paper can pass through, but some foreign matters smaller than the space can still enter the main machine, including common parts such as screws on the equipment, even if it is a very small metal particle, once entering the main machine, it will cause serious damage to the roller of the offset press and the platform of the die-cutting machine, and the current paper feeding machine is generally provided with a foreign matter baffle or a component with magnetism, but since the foreign matter is blocked in the paper feeding machine, the staff cannot know it, and can only clean it regularly, when the foreign matter baffle is blocked with foreign matters, the paper feeding machine will still be damaged. Moreover, the component with magnetism is easy to attract larger metal objects, at this time, the paper feeding machine is also easy to be stuck, and needs to be stopped for processing. The treatment of large foreign matters and small metal foreign matters should be different, and timely feedback is needed to facilitate the cleaning of the staff.

[0003] For example, the patent with publication number CN203021067U discloses a paper feeding machine foreign matter prevention plate, which comprises a foreign matter baffle, and the foreign matter baffle is provided with magnetism. CONTENT OF THE UTILITY MODEL

[0004] TECHNICAL PROBLEM TO BE SOLVED BY THE UTILITY MODEL

[0005] The technical problem to be solved by the utility model is to provide a paper feeding machine foreign matter prevention mechanism, which can treat large foreign matters and metal foreign matters, and can alarm when foreign matters are stuck.

[0006] TECHNICAL SCHEME

[0007] In order to solve the above problems, the technical scheme provided by the utility model is as follows:

[0008] A paper feeding machine foreign matter prevention mechanism, which comprises a bumper and a strong magnet, the bumper and the strong magnet are horizontally arranged above the conveying platform and fixed on the mounting fixed block, the bumper is in front of the strong magnet, a space for passing paper is arranged below the bumper, the space is limited in height to the bottom of the bumper, the mounting fixed block is fixedly connected to the positioning block and forms a lever structure through the rotating pin, the positioning block abuts against the trigger end of the micro switch, and the micro switch is connected to the alarm.

[0009] The bumper is located in front of the strong magnet, its main role is to block larger size foreign matter, prevent them from entering the paper feeder. The height of the space below the bumper is limited to ensure that only the paper of the specified thickness can pass through, while larger foreign matter will be blocked outside. Immediately behind the bumper is the strong magnet, which is used to attract and remove any small metal foreign matter that may be mixed into the paper flow. In this way, the subsequent processing equipment can be protected from being damaged by metal fragments. The installation fixing block forms a lever structure with the positioning block through the rotating pin. When a large foreign object hits the bumper, the entire device (including the strong magnet) will rotate around the rotating pin due to the pressure of the foreign object. This rotation will cause the positioning block to move and trigger the micro switch. Once the micro switch is triggered, it will send a signal to the connected alarm, thus generating an alarm to notify the operator that there is a foreign object stuck and needs to be cleaned or checked. This mechanism not only physically blocks large foreign objects and attracts metal foreign objects, but also sends an alarm when problems are encountered, ensuring the continuous operation and safety of the system. Since all components are relatively simple and easy to access, maintenance work is also relatively easy to perform when a fault occurs or cleaning is required.

[0010] As an option, the cross-sectional shape of the bumper is hook-shaped and provided with a slope, the slope is directed towards the direction of the conveying platform.

[0011] For larger foreign objects, the slope can provide an inclined surface when it contacts the bumper, which helps to guide the foreign object to one side or push it up, rather than directly hitting the bumper and causing jamming. In this way, not only the smoothness of the paper flow is protected, but also the impact force on the bumper itself is reduced. When foreign objects are intercepted, the hook-shaped design makes it easier to remove these foreign objects from the side, making it easier for the operator to clean without having to disassemble or move the bumper itself.

[0012] As an option, the bumper is a thin plate structure.

[0013] The thin plate structure means that less material is used to manufacture the bumper, which directly reduces the production cost and reduces the weight of the entire device.

[0014] As an option, an adjusting screw is threadedly connected to the positioning block, and the end of the adjusting screw abuts against the triggering end of the micro switch.

[0015] By rotating the adjustment screw, the position of the microswitch trigger point can be finely adjusted. This allows users to set the sensitivity of the bumper's response to foreign objects according to actual needs, ensuring that the system can work in the most appropriate conditions. Different paper feeding tasks may have different requirements for foreign object detection. The adjustment screw allows operators to flexibly adjust the trigger threshold of the microswitch according to specific application scenarios (such as paper type, thickness, conveying speed, etc.). Prevent false triggering. The design of the adjustment screw makes the calibration process very simple. Operators only need to rotate the screw using a screwdriver or other tools to complete the adjustment without the need for complex tools or professional skills.

[0016] As an option, the tail end of the adjustment screw is provided with a peripheral tooth.

[0017] It is convenient for the operator to adjust the adjustment screw with his hand.

[0018] As an option, the side of the positioning block away from the microswitch is abutted with a positioning screw, and the positioning screw is threadedly connected to a positioning block with fixed position.

[0019] The positioning screw supports the positioning block and the mounting fixed block, preventing the mounting fixed block from falling down, i.e. preventing the bumper and the strong magnet from moving down to reduce the space below. The use of the positioning screw can adjust the height of the space, and the height through which the foreign object can pass can be flexibly adjusted.

[0020] As an option, the tail end of the positioning screw is provided with a peripheral tooth.

[0021] It is convenient for the operator to adjust the positioning screw with his hand.

[0022] As an option, the lower side of the strong magnet is closely attached to a strong magnetic protection angle steel.

[0023] Strong magnet is usually made of brittle material and is easy to be damaged when impacted or scraped. Strong magnet protection angle steel can effectively protect strong magnet from external physical impact, such as collision with paper edge, foreign matter or other mechanical parts. By providing an additional physical barrier, strong magnet protection angle steel helps to reduce the wear and tear on the surface of strong magnet, prolong its service life and ensure that its magnetic strength will not be weakened due to surface damage. Strong magnet protection angle steel not only plays a protective role, but also enhances the structural rigidity of the entire foreign matter prevention mechanism. It is closely combined with strong magnet to form a more stable whole, reducing the vibration and deformation that may occur during work. Certain types of angle steel (such as iron or cobalt-based alloy) have magnetic conductivity by themselves, which can effectively guide and concentrate magnetic force lines, making the magnetic force of strong magnet more concentrated in the desired area and improving its efficiency in adsorbing metal foreign matter. Strong magnet is prone to adsorb dust and fine metal particles, which will affect its performance if accumulated for a long time. Strong magnet protection angle steel can prevent dust and foreign matter from directly contacting the surface of strong magnet to some extent, simplifying the cleaning work. If strong magnet protection angle steel itself is damaged or worn out, it can be relatively easily replaced without the need to replace the entire strong magnet, reducing maintenance costs.

[0024] Advantages

[0025] Compared with the prior art, the technical scheme provided by the utility model has the following advantages:

[0026] The bumper is used for blocking larger foreign matters, and after being blocked, the bumper is fixed to the positioning block through the mounting fixed block and forms a lever structure through the rotating pin to trigger the micro switch and alarm. The foreign matters with sizes that can pass through the space below the bumper are adsorbed by the strong magnet, and are generally steel or iron parts such as iron nails, screws and bolts that fall from the paper conveying equipment. Both large and small foreign matters can be handled. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A side view partial structure schematic diagram of a paper conveying machine foreign matter prevention mechanism is provided for the embodiment of the utility model;

[0028] Figure 2 A side view overall structure schematic diagram of a paper conveying machine foreign matter prevention mechanism is provided for the embodiment of the utility model;

[0029] Figure 3 An A-A sectional view of a paper conveying machine foreign matter prevention mechanism is provided for the embodiment of the utility model;

[0030] 1, conveying platform; 2, paper pressing frame; 3, passing roller; 4, fixed seat; 5, adjusting screw; 6, positioning block; 7, micro switch; 8, positioning block; 9, positioning screw; 10, strong magnet mounting rod; 11, strong magnet; 12, strong magnet protection angle steel; 13, bumper; 14, mounting fixed block; 15, rotating pin. Detailed Implementation

[0031] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0032] Example

[0033] Combined with appendix Figure 1 , 3 A foreign object prevention mechanism for a paper feeder includes a safety bar 13 and a strong magnet 11. Both the safety bar 13 and the strong magnet 11 are horizontally positioned above the conveying platform 1 and fixed to a mounting block 14. The strong magnet 11 is fixed below a strong magnet mounting rod 10, and a strong magnet protective angle steel 12 is tightly attached to the bottom of the strong magnet 11. The side of the strong magnet protective angle steel 12 is fixed to the strong magnet mounting rod 10 with screws, and the bottom surface of the strong magnet protective angle steel 12 supports the strong magnet 11. A groove is provided below the strong magnet mounting rod 10 to accommodate and engage the strong magnet 11.

[0034] The bumper 13 is located in front of the strong magnet 11 and is directly fixed to the bottom of the mounting block 14 by screws or clips. The bumper 13 has a hook-shaped cross-section with a beveled surface facing the direction from which it is delivered by the conveyor platform 1. The bumper 13 is a thin plate structure. The lowest point of the bumper 13 is arc-shaped to improve passability and prevent foreign objects from getting stuck on the bumper 13 and becoming unable to be removed.

[0035] A space for paper to pass through is provided below the bumper 13. The height of the space is limited to the bottom of the bumper 13. The mounting block 14 is fixed to the positioning block 6 and forms a lever structure through the rotating pin 15. The positioning block 6 abuts against the trigger end of the micro switch 7, which is connected to the alarm. The micro switch 7 is fixedly mounted on the mounting base 4. An adjusting screw 5 is threadedly connected to the end of the positioning block 6, and the end of the adjusting screw 5 abuts against the trigger end of the micro switch 7.

[0036] The adjusting screw 5 has teeth at its tail end. The rotating pin 15 is located in the through hole of the fixed base 4. Both ends of the rotating pin 15 protrude from the through hole and are connected to the positioning block 6 and the mounting block 14 via pins. The positioning block 6 and the mounting block 14 rotate together. The adjusting screw 5 passes through the end of the positioning block 6, with the protruding part abutting against the trigger end of the micro switch 7. A positioning screw 9 abuts against the side of the positioning block 6 away from the micro switch 7. The positioning screw 9 is threadedly connected to the fixed positioning block 8. The tail end of the positioning screw 9 has teeth. The teeth of the positioning screw 9 and the adjusting screw 5 are located on the same side of the positioning block 6.

[0037] The fixed seat 4, the micro switch 7, the locating block 6, the adjusting screw 5, the locating block 8, the locating screw 9 and the mounting fixed block 14 are symmetrical structures, the strong magnetic mounting rod 10 connects the components on both sides at the position of the mounting fixed block 14, the bumper 13 and the strong magnet 11 are connected beside and below the mounting fixed block 14. When a larger object passes, the bumper 13 is lifted up, the rotating pin 15 rotates, the adjusting screw 5 touches the micro switch 7, and the paper feeding machine stops feeding paper. When the small iron piece is not blocked by the bumper 13, it will be attracted by the strong magnet 11, thereby playing a role in protecting the main machine roller.

[0038] The drawings attached Figure 2 The bumper 13 and the strong magnet 11 and other components are all mounted on the fixed seat 4, the fixed seat 4 is arranged on both sides of the conveying platform 1 and is fixed by screws or welding. The fixed seat 4 is fixedly connected with the paper pressing frame 2, and the paper pressing frame 2 covers above the conveying platform 1. The conveying platform 1 comprises a conveying belt and a roller 3, the conveying belt is wound on the roller 3, and a certain roller 3 is connected with a driving motor, which is a driving roller and provides power.

[0039] The above describes the utility model and its implementation mode in a schematic manner, which is not restrictive, and the components shown in the drawings are only one of the implementation modes of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A foreign object prevention mechanism of a paper feed mechanism, characterized by comprising: The bumper and the strong magnet are arranged above the conveying platform and fixed on the mounting fixed block, the bumper is in front of the strong magnet, a space for passing paper is arranged below the bumper, the space is limited to the bottom of the bumper, the mounting fixed block is fixed on the positioning block and forms a lever structure through the rotating pin, the positioning block abuts against the trigger end of the micro switch, and the micro switch is connected to the alarm.

2. The foreign object prevention mechanism of claim 1, wherein The cross section of the bumper is hook-shaped and is provided with an inclined surface, and the inclined surface is directed to the direction of the conveying platform.

3. A foreign object prevention mechanism for a paper feed mechanism according to claim 2, wherein The bumper is a thin plate structure.

4. The foreign object prevention mechanism of claim 1, wherein, An adjusting screw is threadedly connected to the positioning block, and the end of the adjusting screw abuts against the trigger end of the micro switch.

5. A foreign object prevention mechanism for a paper feed mechanism according to claim 4, wherein The tail end of the adjusting screw is provided with a peripheral tooth.

6. The foreign object prevention mechanism of claim 1, wherein A positioning screw is arranged on the side of the positioning block away from the micro switch, and the positioning screw is threadedly connected to the positioning block fixed in position.

7. A foreign object prevention mechanism for a paper feed mechanism according to claim 6, wherein The tail end of the positioning screw is provided with a peripheral tooth.

8. The foreign object prevention mechanism of claim 1, wherein, A strong magnetic protection angle steel is closely arranged below the strong magnet.

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