Safety protection device of paper cutter

Abstract

A safety protection device of a paper cutter comprises an air blowing system, safety plug structures, infrared light curtain systems and infrared sensors, the air blowing system is arranged on the inner side of a paper pushing plate, the safety plug structures are arranged on the two sides of the upper portion of a cutter frame, the infrared light curtain systems are arranged on the two sides of the cutter frame, and the sensors at the bottommost ends of the infrared light curtain systems are arranged at the bottom end of the cutter frame. The infrared sensors are symmetrically arranged on the left side and the right side below the paper pressing plate. Compared with a traditional structure, redundant paper is blown out through the air blowing system designed on the inner side, and therefore the hand does not need to stretch into the position below the cutter. And a protection device with the same structure as the bolt is additionally arranged below the cutter, so that failure during maintenance is avoided. The light curtain sensor group is placed on the bottommost layer, and optical sensors are installed at the tops of the left side and the right side. Meanwhile, the air blowing system is matched to avoid frequent contact with a sensor area, and the light curtain sensor group can be installed at a low position.

Description

Technical Field

[0001] The utility model relates to the field of paper cutter equipment, in particular to a safety protection device for a paper cutter. Background Art

[0002] Traditional paper cutters use infrared sensors, which are essentially photoelectric sensors. The photoelectric sensor can only detect whether there is an object. It cannot determine the specific type of the object. Therefore, it needs to be used with a cardboard press to reduce the error by narrowing the judgment range through a light curtain.

[0003] However, in some existing accidents, there are two situations that will circumvent the logic of the above design, which can be summarized as when the cardboard itself is not working. There are two situations in which it does not work. When not in use, the cutter brake suddenly fails; there is a blind spot, and if it is installed too low, it will frequently block the infrared light band when taking out paper scraps and waste paper, triggering the insurance. At present, many mainstream technologies have adopted other insurance measures. The highest-specification technology is to use camera capture to replace traditional sensors, but first of all, there is a cost issue; secondly, it is difficult to solve two problems at the same time. Finally, the solution itself has defects, such as the temperature difference sensor, but the reaction speed and sensitivity of the temperature difference sensor are not suitable for the needs of the paper cutter.

[0004] To solve the above problems, we made a series of improvements. Utility Model Content

[0005] The purpose of the utility model is to provide a safety protection device for a paper cutter to overcome the above-mentioned shortcomings and deficiencies in the prior art.

[0006] A safety protection device for a paper cutter comprises: an air blowing system, a safety bolt structure, an infrared light curtain system and an infrared sensor, wherein the air blowing system is arranged on the inner side of a paper pushing board, the safety bolt structure is arranged on both sides above a cutting frame, the infrared light curtain system is arranged on both sides of the cutting frame, the bottom end sensor of the infrared light curtain system is arranged at the bottom end of the cutting frame, and the infrared sensors are symmetrically arranged on the left and right sides below a paper pressing board.

[0007] Furthermore, the blowing system includes: a fan bracket, a fan, a tank chain and an air outlet, the fan bracket is fixed to the inner side of the push paper board, the fan is arranged on the fan bracket, the air outlet is connected to the front end of the fan, the tank chain is installed on the top of the fan bracket, and the fan's wires are arranged inside the tank chain.

[0008] Furthermore, the safety bolt structure includes: a fixed protrusion, a fixed handle and a fixed groove, the fixed protrusion is arranged in the fixed groove, the fixed handle is connected to the side end of the fixed protrusion, the fixed handle is connected to the outside of the fixed groove, and the fixed groove is arranged on both sides above the cutting frame.

[0009] Furthermore, the infrared light curtain system comprises: a transmitting tube and a receiving tube, and the bottom ends of the transmitting tube and the receiving tube are flush with the bottom end of the cutting frame.

[0010] Beneficial effects of the utility model:

[0011] Compared with the traditional structure, the utility model blows out the excess paper through the blowing system designed on the inside, so there is no need to put your hand under the cutter. A protective device with a latch structure is added under the cutter to avoid failure during maintenance. The light curtain sensor group is placed on the bottom layer, and optical sensors are installed on the top of the left and right sides at the same time. At the same time, the blowing system is used to avoid frequent contact with the sensor area, and the light curtain sensor group can be installed at a low place. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the safety bolt structure.

[0014] Reference numerals:

[0015] The blowing system 100 , the fan bracket 110 , the fan 120 , the tank chain 130 and the air outlet 140 .

[0016] The safety bolt structure 200 , the fixing protrusion 210 , the fixing handle 220 and the fixing groove 230 .

[0017] Infrared light curtain system 300 , transmitting tube 310 and receiving tube 320 .

[0018] Infrared sensor 400 , paper pusher 500 , cutter holder 600 and paper presser 700 . DETAILED DESCRIPTION

[0019] The following is a further description of the present invention in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0020] Example 1

[0021] Figure 1 It is a structural schematic diagram of the utility model. Figure 2 It is a structural schematic diagram of the safety bolt structure.

[0022] like Figure 1As shown, a safety protection device for a paper cutter comprises: an air blowing system 100, a safety bolt structure 200, an infrared light curtain system 300 and an infrared sensor 400. The air blowing system 100 is arranged on the inner side of a pushing paper board 500, the safety bolt structure 200 is arranged on both sides above a cutting frame 600, the infrared light curtain system 300 is arranged on both sides of the cutting frame 600, the bottommost sensor of the infrared light curtain system 300 is arranged at the bottom end of the cutting frame 600, and the infrared sensor 400 is symmetrically arranged on the left and right sides below a pressing paper board 700.

[0023] The blowing system 100 includes: a fan bracket 110, a fan 120, a tank chain 130 and an air outlet 140. The fan bracket 110 is fixed to the inner side of the push paper board 500, the fan 120 is arranged on the fan bracket 110, the air outlet 140 is connected to the front end of the fan 120, the tank chain 130 is installed on the top of the fan bracket 110, and the tank chain 130 is provided with electric wires of the fan 120.

[0024] like Figure 2 As shown, the safety bolt structure 200 includes: a fixed protrusion 210, a fixed handle 220 and a fixed groove 230, the fixed protrusion 210 is arranged in the fixed groove 230, the fixed handle 220 is connected to the side end of the fixed protrusion 210, the fixed handle 220 is connected to the outer side of the fixed groove 230, and the fixed groove 230 is arranged on both sides above the cutting frame 600.

[0025] The infrared light curtain system 300 includes: a transmitting tube 310 and a receiving tube 320 , and the bottom ends of the transmitting tube 310 and the receiving tube 320 are flush with the bottom end of the cutting frame 600 .

[0026] The main purpose of the improvement of the utility model is to solve the blind spot while reducing the chance of the hand reaching under the cutter as much as possible, and finally to provide some insurance for the unavoidable situation.

[0027] First of all, before making any improvements, we must first understand that the reason why it cannot be installed too low is because there will be interference items that cause the alarm to be triggered frequently. In most cases, it is because the hand will frequently reach under the cutter, such as taking away the waste paper that was cut before. Therefore, we need to take the interference item into consideration and make a double judgment. The utility model designs two infrared sensors 400 from top to bottom, which can predict whether there is paper below. The judgment standard is that if one side does not receive it and one side receives it, it is considered that the paper is interfering with the light curtain; if both sides receive it, it is considered that the hand is interfering with the light curtain; if neither side receives it, it is considered that the paper is interfering with the light curtain. Therefore, even if we make the bottom ends of the transmitting tube 310 and the receiving tube 320 flush with the bottom end of the cutter frame 600, as long as the symmetrical infrared sensors 400 make judgments according to the preset rules, they can assist the infrared light curtain system 300 in anti-interference.

[0028] Then, we designed a blowing system 100 on the inside of the push paper board 500. After turning on the fan 120, the paper in the cavity will be blown out, so there is no need to put your hand under the cutter. However, the wires brought by the fan may be pulled and broken due to the movement of the push paper board 500. Therefore, we designed a tank chain 130 structure for the wires. By fixing the wires in the tank chain, the wires will not fall vertically, but move with the tank chain, thus solving the problem of pulling and breaking. By adding an air outlet 140 structure, the direction of the blowing is converged to enhance the effect of blowing paper scraps.

[0029] A safety bolt structure 200 is added under the cutter as insurance to avoid accidents that may occur during maintenance, such as the cutter falling. The specific principle is that the fixed protrusion 210 is a structure that can move left and right in the fixed groove 230. It is driven by a fixed handle 220 that is also in the fixed groove 230, and the fixed protrusion 210 is extended and retracted by moving left and right. The fixed protrusion 210 does not contact the cutter, but only fits with it. Therefore, during normal work, it can be directly retracted into the fixed groove 230, and can be pushed out if maintenance is required. And because it fits the cutter, it does not need to bear the gravity of the cutter falling, and there is not too high a demand for the durability of the safety bolt structure 200.

[0030] Compared with the traditional structure, the utility model blows out the excess paper through the blowing system designed on the inside, so there is no need to put your hand under the cutter. A protective device with a latch structure is added under the cutter to avoid failure during maintenance. The light curtain sensor group is placed on the bottom layer, and optical sensors are installed on the top of the left and right sides at the same time. At the same time, the blowing system is used to avoid frequent contact with the sensor area, and the light curtain sensor group can be installed at a low place.

[0031] The specific implementation modes of the present invention are described above, but the present invention is not limited thereto. The present invention can also have various changes without departing from the purpose of the present invention.

Claims

1. A safety protection device for a paper cutter, characterized in that: include: The invention relates to a blowing system (100), a safety bolt structure (200), an infrared light curtain system (300) and an infrared sensor (400), wherein the blowing system (100) is arranged on the inner side of a pushing paper board (500), the safety bolt structure (200) is arranged on both sides above a cutting frame (600), the infrared light curtain system (300) is arranged on both sides of the cutting frame (600), the bottom end sensor of the infrared light curtain system (300) is arranged at the bottom end of the cutting frame (600), and the infrared sensor (400) is symmetrically arranged on the left and right sides below a pressing paper board (700).

2. A safety protection device for a paper cutter according to claim 1, characterized in that: The blowing system (100) comprises: a fan bracket (110), a fan (120), a tank chain (130) and an air outlet (140); the fan bracket (110) is fixed to the inner side of a push paper board (500); the fan (120) is arranged on the fan bracket (110); the air outlet (140) is connected to the front end of the fan (120); the tank chain (130) is installed on the top of the fan bracket (110); and the electric wires of the fan (120) are arranged in the tank chain (130).

3. The safety protection device for a paper cutter according to claim 1, characterized in that: The safety bolt structure (200) comprises: a fixed protrusion (210), a fixed handle (220) and a fixed groove (230); the fixed protrusion (210) is arranged in the fixed groove (230); the fixed handle (220) is connected to the side end of the fixed protrusion (210); the fixed handle (220) is connected to the outside of the fixed groove (230); and the fixed groove (230) is arranged on both sides above the cutting frame (600).

4. The safety protection device for a paper cutter according to claim 1, characterized in that: The infrared light curtain system (300) comprises: a transmitting tube (310) and a receiving tube (320), wherein the bottom ends of the transmitting tube (310) and the receiving tube (320) are flush with the bottom end of the cutting frame (600).

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