Cutting system

Abstract

The invention discloses a cutting system which aims at achieving double insurance and improving the safety of the cutting system.The cutting system comprises a conveying unit, a machine shell and a cutting unit, the machine shell is arranged above the conveying unit, the conveying unit is used for conveying materials so that the materials can penetrate through the machine shell, and the cutting unit is arranged on the machine shell; the cutting unit is located in the machine shell and used for cutting materials. Openings are formed in the two ends, in the conveying direction of the conveying unit, of the machine shell, the machine shell further comprises shielding doors, the shielding doors cover or open the openings, material passing holes are formed in the shielding doors, and materials on the conveying unit can penetrate through the material passing holes. The shielding door is provided with a first sensor used for detecting whether materials penetrate through the material passing hole or not, and the machine shell is provided with a second sensor used for monitoring whether the shielding door covers the opening or not.

Description

Technical Field

[0001] The present invention belongs to the field of cutting technology, and more specifically, relates to a cutting system. Background Art

[0002] At present, in order to improve safety, cutting machines are basically cut in a semi-closed state, with only feed and discharge ports set on the shielding door to allow materials to pass through.

[0003] Generally speaking, safety gratings are installed at the feed port and the discharge port to determine whether the material enters or leaves the cutting space, and to prevent other foreign objects from entering the cutting space. However, during maintenance, the shielding door often needs to be opened. When the shielding door is opened, the safety grating will move to other positions with the shielding door and will not be able to play a safety protection role. At this time, the cutting machine has no safety protection measures. If the maintenance personnel forget to disconnect the power supply of the cutting unit in advance, the cutting unit may be triggered by mistake during the maintenance process. Therefore, the existing cutting machines are not safe enough. Summary of the invention

[0004] The main purpose of the present invention is to provide a cutting system, aiming to provide double insurance and improve the safety of the cutting system.

[0005] According to a first aspect of the present invention, there is provided a cutting system, comprising a conveying unit, a housing and a cutting unit, wherein the housing is arranged above the conveying unit, the conveying unit is used to convey materials so that the materials pass through the housing, and the cutting unit is located in the housing and is used to cut the materials;

[0006] The casing is provided with openings at both ends along the conveying direction of the conveying unit, and also includes a shielding door, which covers or opens the opening. The shielding door is provided with a feeding hole, and the material on the conveying unit can pass through the feeding hole. The shielding door is provided with a first sensor for detecting whether there is material passing through the feeding hole, and the casing is provided with a second sensor for monitoring whether the shielding door covers the opening.

[0007] In the above-mentioned cutting system, the conveying unit conveys materials in a horizontal direction, and the shielding door can move up and down.

[0008] In the above cutting system, the first sensor includes a safety light barrier.

[0009] In the above-mentioned cutting system, the second sensor comprises a travel switch;

[0010] When the shielding door covers the opening, the travel switch is not triggered;

[0011] When the shielding door starts to move upward from the position covering the opening, the travel switch is triggered.

[0012] In the above-mentioned cutting system, the travel switch is located on the top of the casing.

[0013] In the above-mentioned cutting system, a laser displacement sensor is arranged in the housing, and the laser displacement sensor is used to monitor the displacement distance of the material after passing through it.

[0014] In the above-mentioned cutting system, the laser displacement sensor is located above the conveying unit.

[0015] In the above-mentioned cutting system, the conveying unit includes a first conveyor belt and a second conveyor belt connected in sequence, a gap is provided between the first conveyor belt and the second conveyor belt, the gap is opposite to the cutting unit, the first conveyor belt is used to convey materials into the casing for cutting, the second conveyor belt is used to convey materials out of the casing, and the laser displacement sensor is located above the first conveyor belt.

[0016] In the above-mentioned cutting system, the first conveyor belt is driven by a servo motor, and the second conveyor belt is driven by a variable frequency motor.

[0017] In the above-mentioned cutting system, an alarm signal light is provided on the casing.

[0018] One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

[0019] In the present invention, two sensors are provided. When the shielding door covers the opening, the cutting operation is to be carried out. The first sensor can detect whether the material passes through the material hole and prevent foreign matter from entering the casing. When the shielding door does not cover the opening, the second sensor is triggered, and it is determined that the maintenance scene is in progress. The cutting unit cannot be powered on, thereby ensuring safety during maintenance. Based on this, the cutting system has double insurance and better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0021] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0022] Figure 2 1 is a schematic diagram of the interior of a casing according to the first embodiment of the present invention.

[0023] Among them, the reference numerals of the figures are:

[0024] 1. Conveying unit; 11. First conveyor belt; 12. Second conveyor belt; 2. Casing; 3. Shielding door; 31. Feed hole; 4. First sensor; 5. Second sensor; 6. Alarm signal light; 7. Laser displacement sensor. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0027] Reference Figure 1 to Figure 2 As shown, a cutting system comprises a conveying unit 1, a housing 2 and a cutting unit (not shown in the figure), wherein the housing 2 is arranged above the conveying unit 1, the conveying unit 1 is used to convey materials so that the materials pass through the housing 2, and the cutting unit is located in the housing 2 and is used to cut the materials;

[0028] The housing 2 is provided with openings at both ends along the conveying direction of the conveying unit 1, and further includes a shielding door 3, which covers or opens the opening, and is provided with a material passing hole 31, through which the material on the conveying unit 1 can pass, and is provided with a first sensor 4 for detecting whether the material passes through the material passing hole 31, and is provided with a second sensor 5 for monitoring whether the shielding door 3 covers the opening;

[0029] When the shielding door 3 covers the opening, the cutting operation is to be carried out. The first sensor 4 can detect whether the material passes through the material hole 31, and prevent foreign matter from entering the casing 2. When the shielding door 3 does not cover the opening, the second sensor 5 will be triggered, and it is determined that it is in a maintenance scene. The cutting unit cannot be powered on, thereby ensuring safety during maintenance. Based on this, the cutting system has double insurance and better safety.

[0030] In this embodiment, the cutting unit is a laser cutting device, and the material is cut by the laser cutting device.

[0031] In this embodiment, the conveying unit 1 conveys the material in a horizontal direction. If the material is conveyed horizontally, the material is not easily deflected due to gravity, ensuring that the material can be accurately moved to the designated position.

[0032] The shielding door 3 can move up and down. When the shielding door 3 moves down to the extreme position, the shielding door 3 covers the opening. At this time, the casing 2 is in a shielding state, and only the material hole 31 can be entered and exited, so cutting operations can be performed. Once the shielding door 3 starts to move up, the shielding door 3 cannot cover the opening. At this time, the casing 2 is not in a shielding state and cutting operations cannot be performed. It is judged that it is in a maintenance scene at this time.

[0033] Specifically, the shielding door 3 is slidably connected to the housing 2 via a guide rail slider structure, so that the shielding door 3 can slide up and down, making it convenient for workers to manually operate the shielding door 3 .

[0034] In some other embodiments, the shielding door 3 can be electrically lifted and lowered by an electric hoist or a gear rack structure, further reducing the manual burden.

[0035] In this embodiment, the first sensor 4 includes a safety grating, which includes a transmitter and a receiver. The transmitter and the receiver are arranged on both sides of the feed hole 31 to detect whether something passes through the feed hole 31. In addition, the material has a preset height. If something exceeding the preset height enters the feed hole 31, it will be determined that a foreign object has entered, thereby sounding an alarm and shutting down the cutting unit.

[0036] In this embodiment, the second sensor 5 includes a travel switch;

[0037] When the shield door 3 covers the opening, the travel switch is not triggered;

[0038] When the shielding door 3 starts to move upward from the position covering the opening, the travel switch will be triggered, and it is judged that it is in the maintenance scene, and the cutting unit cannot be powered on.

[0039] Specifically, the travel switch is located at the top of the casing 2. Relying on this mechanical triggering structure, the judgment is more accurate. Only when the shielding door 3 moves will the second sensor 5 be triggered, and no false alarm will occur.

[0040] In this embodiment, the housing 2 is provided with an alarm signal light 6, which can emit corresponding light according to the alarm signal to let the workers know the system operation status.

[0041] In this embodiment, a laser displacement sensor 7 is provided in the housing 2, and the laser displacement sensor 7 is used to monitor the displacement distance of the material after passing through it, so as to cooperate with the conveying unit 1 and the cutting unit to complete the cutting operation;

[0042] After detecting the material, the laser displacement sensor 7 starts to record the displacement distance of the material. At this time, the conveying distance of the conveying unit 1 will also be fed back. The two can be verified to ensure that the displacement distance of the material is correct. Then, according to the fixed distance between the laser displacement sensor 7 and the cutting unit, it is judged whether the preset cutting length is reached. If the preset cutting length is reached, the cutting unit starts cutting and the conveying unit 1 pauses material movement. After completing one cutting, it continues feeding, and so on, to complete the next cutting.

[0043] In this embodiment, the laser displacement sensor 7 is located above the conveying unit 1 and can accurately monitor the movement of the material.

[0044] In this embodiment, the conveying unit 1 includes a first conveyor belt 11 and a second conveyor belt 12 connected in sequence, and a gap is provided between the first conveyor belt 11 and the second conveyor belt 12, and the gap is opposite to the cutting unit. The cutting unit can cut the material by relying on the gap to ensure that the first conveyor belt 11 or the second conveyor belt 12 is not cut;

[0045] The first conveyor belt 11 is used to convey materials into the housing 2 for cutting, and the second conveyor belt 12 is used to convey materials out of the housing 2. The laser displacement sensor 7 is located above the first conveyor belt 11. The first conveyor belt 11 and the laser displacement sensor 7 have been calibrated and can be mutually verified to ensure that the material displacement distance detected by the laser displacement sensor 7 is consistent with the conveying distance of the first conveyor belt 11, thereby ensuring that the cutting length is accurate. The second conveyor belt 12 does not need to be calibrated. After completing the cutting of a piece of material, a signal is given to the second conveyor belt 12 to allow the second conveyor belt 12 to quickly convey the material away and leave the housing 2, and then cut the next material.

[0046] Therefore, the first conveyor belt 11 requires high precision, while the second conveyor belt 12 does not require high precision. The first conveyor belt 11 is driven by a servo motor to accurately control the conveying distance, and the second conveyor belt 12 is driven by a variable frequency motor to rapidly increase the conveying speed.

[0047] In this embodiment, after the laser displacement sensor 7 detects that the material has left the bottom thereof, the material may not have been completely moved to the second conveyor belt 12. In order to ensure that the material is completely moved to the second conveyor belt 12, the second conveyor belt 12 is restarted to transport the material out at one time, a weighing sensor is provided on the second conveyor belt 12 to detect the weight of the material moved to the second conveyor belt 12. Each material is weighed before cutting, and the value is used as a standard value. Based on the standard value and the possibility of partial weight loss during cutting, a calibration range can be preset for the material. After a material is cut, only when the weight obtained by the weighing sensor is within the calibration range, the second conveyor belt 12 will be started to send the material out of the housing 2;

[0048] Alternatively, the servo motor of the first conveyor belt 11 monitors its own torque change to determine whether all the materials on the first conveyor belt 11 have been moved to the second conveyor belt 12. This method is suitable for the situation where there is only one piece of material on the first conveyor belt 11 for cutting. The torque of the servo motor when it is idling is different from the torque when it is loaded with material. When the material is completely moved to the second conveyor belt 12, the servo motor on the first conveyor belt 11 is idling. This can be determined based on the torque at this time, so that the second conveyor belt 12 can be started to transport the material out of the casing 2.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cutting system, It is characterized in that It comprises a conveying unit, a casing and a cutting unit, wherein the casing is arranged above the conveying unit, the conveying unit is used to convey materials so that the materials pass through the casing, and the cutting unit is located in the casing and is used to cut the materials; The casing is provided with openings at both ends along the conveying direction of the conveying unit, and also includes a shielding door, which covers or opens the opening. The shielding door is provided with a feeding hole, and the material on the conveying unit can pass through the feeding hole. The shielding door is provided with a first sensor for detecting whether there is material passing through the feeding hole, and the casing is provided with a second sensor for monitoring whether the shielding door covers the opening.

2. The cutting system according to claim 1, It is characterized in that The conveying unit conveys materials in a horizontal direction, and the shielding door can move up and down.

3. The cutting system according to claim 2, It is characterized in that The first sensor comprises a safety light barrier.

4. The cutting system according to claim 2, It is characterized in that The second sensor includes a travel switch; When the shielding door covers the opening, the travel switch is not triggered; When the shielding door starts to move upward from the position covering the opening, the travel switch is triggered.

5. The cutting system according to claim 4, It is characterized in that The travel switch is located at the top of the casing.

6. The cutting system according to claim 1, It is characterized in that A laser displacement sensor is arranged in the casing, and the laser displacement sensor is used to monitor the displacement distance of the material after passing through the laser displacement sensor.

7. The cutting system according to claim 6, It is characterized in that The laser displacement sensor is located above the conveying unit.

8. The cutting system according to claim 6, It is characterized in that The conveying unit includes a first conveyor belt and a second conveyor belt connected in sequence, a gap is provided between the first conveyor belt and the second conveyor belt, the gap is opposite to the cutting unit, the first conveyor belt is used to convey materials into the casing for cutting, and the second conveyor belt is used to convey materials out of the casing, and the laser displacement sensor is located above the first conveyor belt.

9. The cutting system according to claim 8, It is characterized in that The first conveyor belt is driven by a servo motor, and the second conveyor belt is driven by a variable frequency motor.

10. The cutting system according to claim 1, It is characterized in that The casing is provided with an alarm signal light.

Images