Pressing device for automatic cutting and automatic cutting device

Abstract

The utility model discloses a pressing device for automatic cutting and an automatic cutting device. The pressing device for automatic cutting comprises a height measurement sensor, a workpiece pressing block, a milling cutter, a blade existence detection sensor, a pressure balance cylinder, a static electricity elimination assembly and a main shaft lifting electric cylinder. Specifically, a pressing block is fixed to a main shaft of a cutting workpiece and can move along with the main shaft, automatic pressing of the cutting position is achieved, meanwhile, the pressing force is determined by the actual working condition, it can be guaranteed that the position of the workpiece is not affected by movement of the main shaft in the state that the workpiece is pressed on the premise that it is guaranteed that the workpiece is not collapsed, and therefore the cutting efficiency is improved. The problems that the movement track is not matched with the direction of the workpiece during cutting, deviation occurs, and the workpiece is collapsed and flies during cutting are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, in particular to a pressing device for automatic cutting and an automatic cutting device. Background Art

[0002] The statements in this section merely provide background technology related to the present invention and do not necessarily constitute prior art.

[0003] In the mass production process of small-sized and light-weight products such as substrates, multiple products are often fixed together. Therefore, a cutting process is required at a certain stage of production to cut the single product from the whole. In this process, there are often many problems such as the motion trajectory during cutting not matching the direction of the workpiece, resulting in deviation, and the workpiece pressed by the workpiece being broken off during cutting.

[0004] In the prior art, the workpiece flying off and the mismatch between the motion trajectory and the workpiece direction are avoided mainly by changing factors such as the thickness of the milling cutter and the rotation speed of the rotating shaft. However, the above-mentioned adverse effects caused by the clamping force of the workpiece during cutting are ignored, resulting in poor final cutting effect. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes an automatic cutting clamping device and an automatic cutting device. The device fixes a clamping block on the main shaft of the cutting workpiece so that the clamping block can move with the main shaft to realize automatic clamping of the cutting position.

[0006] In order to achieve the above purpose, the following technical solutions are adopted:

[0007] The utility model provides a clamping device for automatic cutting, comprising: a clamping device frame, a spindle, a height measuring sensor, a workpiece clamping block, a milling cutter, a blade presence detection sensor, a pressure balancing cylinder, a static elimination component and a spindle lifting electric cylinder;

[0008] The upper end of the spindle is connected to a spindle lifting electric cylinder, which is used to drive the spindle to move up and down;

[0009] The pressure balancing cylinder is installed in the middle of one side of the clamping device frame and is used to adjust the pressure of the workpiece clamping block on the workpiece to be cut;

[0010] The workpiece pressing block is installed at the lower end of the main shaft and is used to apply pressure to the workpiece to be cut;

[0011] The milling cutter is connected to the main shaft through a workpiece clamping block and is used for cutting the workpiece to be cut.

[0012] Furthermore, the height measuring sensor is installed on one side of the frame of the clamping device, and the height of the workpiece to be cut is measured by the sensor probe;

[0013] Furthermore, the blade presence detection sensor is installed at the lower end of one side of the clamping device frame and is kept in a straight line with the milling cutter to detect whether the blade of the milling cutter exists;

[0014] Furthermore, the pressure balancing cylinder is installed in the middle of one side of the clamping device frame, and is used to adjust the pressure of the workpiece clamping block on the workpiece to be cut;

[0015] Further, the static elimination assembly includes: a static eliminator and a conductive material, which are installed on one side of the spindle and are used to eliminate static electricity on the workpiece to be cut;

[0016] Furthermore, the spindle lifting electric cylinder is embedded between the clamping device frames and is higher than the clamping device frames.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a clamping device for automatic cutting, which not only meets the production needs, but also has the characteristics of wide adaptability and adjustable pressure. By fixing the clamping block on the main shaft of the cutting workpiece, it can move with the main shaft to realize automatic clamping of the cutting position. At the same time, the size of the clamping force is determined by the actual working conditions. Under the premise of ensuring that the workpiece is not blown away, it can be ensured that the movement of the main shaft will not affect the position of the workpiece when the workpiece is clamped, so as to prevent the movement trajectory from not matching the direction of the workpiece during cutting and the workpiece from being blown away during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 This is a structural diagram of the compacting device in the utility model;

[0021] Figure 2 It is the gas circuit diagram reflecting the balanced pressure of the cylinder in the utility model;

[0022] Figure 3 It is a structural diagram of the automatic cutting device in the utility model.

[0023] Among them: 1. Height measurement sensor; 2. Workpiece clamping block; 3. Milling cutter; 4. Blade detection sensor; 5. Cylinder for pressure balance; 6. Static elimination component; 7. Spindle lifting cylinder; 8. Spindle; 9. Clamping device frame; a. Cylinder for pressure balance (same as number 5); b1. Solenoid valve for low pressure; b2. Solenoid valve for high pressure; c. Solenoid valve base; d. Pressure reducing valve; e. Air pipe joint of cylinder; f. Muffler; g. One-way control valve; A. Waste box; B. Waste knife collection box; C. Workpiece placement tray; D. Clamping device; E. Workpiece plane moving structure; F. Dust suction structure. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] Embodiment 1

[0027] like Figure 1 As shown, a clamping device for automatic cutting includes: a height measuring sensor 1, a workpiece clamping block 2, a milling cutter 3, a blade presence detection sensor 4, a pressure balancing cylinder 5, a static electricity elimination component 6, a spindle lifting electric cylinder 7, a spindle 8 and a clamping device frame 9.

[0028] Specifically, the upper end of the spindle 8 is connected to the spindle lifting electric cylinder 7, the lower end of the spindle 8 is installed with the workpiece clamping block 2, the milling cutter 3 is connected to the spindle 8 through the workpiece clamping block 2, the pressure balance cylinder 5 is installed in the middle of one side of the clamping device frame 9, the blade presence detection sensor 4 is installed at the lower end of one side of the clamping device frame 9, and is maintained in a straight line with the milling cutter 3, the height measurement sensor 1 is installed on the other side of the clamping device frame 9, the static elimination component 6 is installed on one side of the spindle 8, and the spindle lifting electric cylinder 7 is embedded between the clamping device frames 9 and is higher than the clamping device frames 9.

[0029] Among them, the height measuring sensor 1 is used to detect the distance between the workpiece to be cut and the milling cutter; the workpiece clamping block 2 is used to apply pressure to the workpiece to be cut so that it is fixed on the workpiece placement tray; the milling cutter 3 is used to cut the workpiece to be cut; the blade presence detection sensor 4 is used to detect whether the blade of the milling cutter 3 exists; the pressure balancing cylinder 5 is used to adjust the pressure of the workpiece clamping block 2 on the workpiece to be cut; the static electricity elimination component 6 is used to eliminate static electricity generated during the cutting process; the spindle lifting electric cylinder 7 is used to drive the spindle 8 to move up and down, thereby driving the workpiece clamping block 2 and the milling cutter 3 to move.

[0030] Among them, the clamping force for clamping the workpiece is provided by the weight of the workpiece clamping block 2 itself. The size of the clamping force is determined by the actual working conditions, which can ensure that the workpiece is not blown away. Moreover, in the clamped state, the movement of the spindle 8 will not affect the position of the workpiece. From past actual cases, a clamping force of 1N can be sufficient; the self-weight of a general workpiece clamping block is greater than the required clamping force, and the excess pressure can be offset by the reverse force provided by the pressure balance cylinder 5. After the workpiece clamping block 2 is set up, the corresponding dust removal equipment, waste collection box, and plane moving structure are then configured, and a complete set of cutting equipment is completed.

[0031] Among them, the utility model uses the cylinder to balance the pressure of the relevant gas circuit design as follows Figure 2 The gas path diagram is shown as follows:

[0032] a is a cylinder for pressure balance (same Figure 1 Mark 5), the low-pressure solenoid valve b1 and the high-pressure solenoid valve b2 are respectively connected through the air pipe joint e of the cylinder, the function of which is to offset part of the gravity of the workpiece clamping block 2; the pressure in the air pipe of the low-pressure solenoid valve b1 is controlled by the pressure reducing valve d, the function of the pressure reducing valve d is to adjust the size of the cylinder output force by changing the pressure in the air circuit, in this case the pressure is about 0.05Mpa; the pressure in the air pipe of the high-pressure solenoid valve b2 is the normal factory air pressure, in this case about 0.35Mpa; c is the solenoid valve base, which is respectively connected to the low-pressure solenoid valve b1 and the high-pressure solenoid valve b2; the pressure balancing cylinder a is also provided with a muffler f; the pressure balancing cylinder a is connected to the low-pressure solenoid valve b1 and the high-pressure solenoid valve b2, and a one-way control valve g is provided on the air circuit, which has two air inlets and one air outlet, so that two pressures can be supplied separately.

[0033] Through the above settings, the action is implemented as follows:

[0034] When the solenoid valve b1 is on and the solenoid valve b2 is off, the pressure input into the cylinder is low (0.05Mpa in the above), which is the state of clamping the workpiece, that is, substrate cutting can be performed. When the solenoid valve b1 is off and the solenoid valve b2 is on, the pressure input into the cylinder is high (0.35Mpa in the above), at this time the workpiece clamping block 2 is in an ascending state, substrate cutting is not performed, and operations such as tool changing can be performed. When the solenoid valve b1 is off and the solenoid valve b2 is off, there is no pressure input into the cylinder, at this time the workpiece clamping block 2 is in a naturally descending state, and no operation is performed.

[0035] Therefore, the entire compaction process is:

[0036] Since the height measuring sensor 1, the workpiece clamping block 2, the milling cutter 3, and the pressure balancing cylinder 5 are fixedly connected, and the relative position of the workpiece and the distance sensor when the workpiece is clamped is also fixed, the distance value between the substrate and the height sensor during cutting can be determined in advance by calculation and set in the program; before the spindle lifting cylinder 7 moves downward, the air circuit is switched to the low-pressure air circuit mode, and when the spindle lifting cylinder 7 moves downward, the height measuring sensor 1 detects the distance to the substrate at any time. When the set value is reached, the spindle lifting cylinder 7 stops moving downward. This position is also a suitable position for clamping the workpiece, and the spindle starts working to cut.

[0037] Among them, the advantage of using the pressure-balancing cylinder 5 to adjust the pressure is that in order to reduce the number of tool changes and increase the service life in the cutting process, a multi-section blade is usually set on a tool handle. The method of using the above-mentioned pressure-balancing cylinder 5 to adjust the pressure has an obvious advantage compared to the spring structure, that is, in the production process of the multi-section blade, the air pressure adjustment structure can ensure a constant pressure. In this embodiment, the pressure is provided by the deadweight of the workpiece clamping block 2, and the excess pressure is balanced by the cylinder to achieve an ideal clamping force, which can not only ensure the clamping of the workpiece, but also achieve the purpose of moving with the main shaft during the clamping process.

[0038] The clamping device of the utility model achieves maximum benefits on the basis of realizing basic functions, has a simple structure and is easy to move; even if the product style is changed, through this principle, some structures thereof can be slightly adjusted to achieve perfect correspondence.

[0039] Embodiment 2

[0040] like Figure 3 As shown, this embodiment provides an automatic cutting device, which, in addition to the clamping device D described in Example 1, also includes: a waste box A, a waste knife collection box B, a workpiece placement tray C, a workpiece plane moving structure E and a dust suction structure F.

[0041] Among them, the clamping device D is the device described in Example 1, and the waste box A is installed in the middle of one side of the clamping device D. Its function is to collect the frame waste after the whole substrate is cut. Another gripper takes the substrate frame from the workpiece placement tray C and puts it into the waste box A; the workpiece placement tray C is installed under the waste box A on one side of the clamping device D, and is kept on the same side of the clamping device D as the waste box A. The tray is used to place the whole substrate to be cut, and is precise, which can ensure that the position of the whole substrate is consistent each time it is placed; the waste knife collection box B is installed The workpiece placement tray C is away from the edge of the clamping device D. Its function is to place the replaced waste milling cutter when changing the tool. A workpiece plane moving structure E is provided at the lower end of the workpiece placement tray C. Since the clamping device D can only move in the vertical direction, the function of this structure is to enable the tray to move in the horizontal plane, and BC moves with E; a dust suction structure F is provided at the lower end on the other side of the clamping device D, and its function is to collect dust fragments generated during the cutting process of the substrate; through the above arrangement, the problems of dust absorption and waste collection during cutting are solved at the same time.

[0042] The general action flow of the above mechanism is: the workpiece plane moving structure E moves the entire substrate to the bottom of the clamping device D (BC moves with E), and the clamping device D moves downward to clamp the workpiece while cutting the substrate. While cutting, the dust suction structure F operates to absorb the powder generated during the cutting process; after cutting a whole substrate, the remaining frame is moved by the workpiece plane moving structure E to the position aligned with the waste box A, and then the substrate frame is taken away from the workpiece placement tray C and put into the waste box A. When a milling cutter cuts enough substrates (the service life of the milling cutter is set according to the number of times the substrate is cut), the used milling cutter is first dropped into the waste cutter collection box B, and then the milling cutter is replaced.

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0044] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A clamping device for automatic cutting, characterized in that: include: Workpiece clamping block, milling cutter, cylinder for pressure balance, spindle lifting electric cylinder, spindle and clamping device frame; The upper end of the spindle is connected to the spindle lifting electric cylinder; The spindle lifting electric cylinder is embedded between the clamping device frames and is higher than the clamping device frames; The pressure balancing cylinder is installed in the middle of one side of the pressing device frame; The workpiece clamping block is installed at the lower end of the main shaft; The milling cutter is connected to the main shaft through a workpiece clamping block.

2. A clamping device for automatic cutting as claimed in claim 1, characterized in that: Also includes: Height measurement sensor; The height measuring sensor is installed on one side of the frame of the clamping device.

3. The automatic cutting pressing device according to claim 1, characterized in that: Also includes: Blade presence detection sensor; The blade presence detection sensor is installed at the lower end of one side of the clamping device frame.

4. The automatic cutting pressing device according to claim 3, characterized in that: The blade presence detection sensor and the milling cutter are kept on the same straight line.

5. The automatic cutting pressing device according to claim 1, characterized in that: Also includes: Static elimination components; The static elimination component comprises: a static eliminator and a conductive material, and is installed on one side of the main shaft.

6. An automatic cutting device, characterized in that: The invention comprises the clamping device for automatic cutting as described in any one of claims 1 to 5.

7. An automatic cutting device as claimed in claim 6, characterized in that: Also includes waste box; The waste box is installed in the middle of one side of the pressing device.

8. An automatic cutting device as claimed in claim 6, characterized in that: Also included is a workpiece placement pallet; The workpiece placement tray is installed under the waste box on one side of the clamping device and is kept on the same side of the clamping device as the waste box.

9. An automatic cutting device as claimed in claim 6, characterized in that: Also includes a waste knife collection box; The waste knife collecting box is installed on the edge of the workpiece placing tray away from the clamping device.

10. An automatic cutting device as claimed in claim 6, characterized in that: It also includes a workpiece plane moving structure and a dust suction structure; A workpiece plane moving structure is provided at the lower end of the workpiece placing tray, and a dust suction structure is provided at the lowermost end on the other side of the clamping device.

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