Automatic tool changer for a numerical control cutting machine

Abstract

The utility model relates to the field of cutting-off machine, disclose a kind of automatic tool changer of numerical control cutting-off machine, including machine table, the outer wall of machine table is equipped with X-axis sliding frame, the upper surface of X-axis sliding frame is equipped with Y-axis sliding frame, the front surface of Y-axis sliding frame is equipped with machine head, the lower surface of X-axis sliding frame is provided with tool changing assembly, and the tool changing assembly includes fixed sleeve, the lower surface of fixed sleeve is fixedly connected in the lower surface of X-axis sliding frame, the lower surface of fixed sleeve is fixedly connected with fixed frame, the outer wall of fixed frame is slidably connected with sliding rod in left and right two ends, and the end of sliding rod close to the center position of fixed frame is fixedly connected with sliding sleeve. In the utility model, by setting movable clamping block, when cutting tool is contacted with clamping block, clamping block will be forced to move outward, and will not be deformed, so it can reduce fatigue wear, and using limiting groove to limit the movement of cylindrical block, can prevent clamping block to move outward and unlock randomly.

Description

Technical Field

[0001] This utility model relates to the field of cutting machines, and in particular to an automatic tool changing device for a CNC cutting machine. Background Technology

[0002] A panel cutter is a mechanical device used to cut and trim various raw materials such as boards and rolls to obtain blanks of specific sizes and shapes. It can process large boards into blanks that meet size requirements and is a key piece of equipment in the processing and production process.

[0003] When a cutting machine is working, different cutting heads need to be changed according to different cutting conditions. At this time, a tool changing device is required. Existing tool changing devices usually use elastic plastic parts to fix the cutting head. During tool changing, the cutting head needs to be moved by the movement of the machine head to pull the cutting head and deform the plastic part to remove the cutting head. However, the deformation of the plastic part by pulling will cause fatigue wear of the plastic part, which will eventually reduce the service life of the deformed part and affect the clamping ability of the plastic part. To solve the above problems, an automatic tool changing device for CNC cutting machines is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an automatic tool changing device for a CNC cutting machine, which aims to improve the problem in the prior art that "using a pulling method to force the plastic part to deform in order to achieve material picking will lead to a reduction in the service life of the deformed part and affect the clamping ability of the plastic part".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic tool changing device for a CNC cutting machine, comprising a machine base, an X-axis sliding frame mounted on the outer wall of the machine base, a Y-axis sliding frame mounted on the upper surface of the X-axis sliding frame, a machine head mounted on the front surface of the Y-axis sliding frame, a tool changing assembly provided on the lower surface of the X-axis sliding frame, the tool changing assembly comprising a fixed sleeve, the fixed sleeve being fixedly connected to the lower surface of the X-axis sliding frame, a fixed frame being fixedly connected to the lower surface of the fixed sleeve, sliding rods being slidably connected to the left and right ends of the outer wall of the fixed frame, a sliding sleeve being fixedly connected to one end of the sliding rod near the center of the fixed frame, a clamping block being slidably connected to the inner wall of the sliding sleeve, a cylindrical block being fixedly connected to the upper end of the clamping block, the cylindrical block penetrating and sliding horizontally on the upper surface of the sliding sleeve, a cutting tool being clamped in the inner wall of the clamping block, a limit groove being provided on the lower surface of the fixed frame, and a drive assembly being provided at the rear end of the Y-axis sliding frame.

[0006] As a further description of the above technical solution:

[0007] The clamping block is elastically connected to the inner wall of the sliding sleeve by a clamping spring. The tool changing assembly also includes a slide rod, which is fixedly connected to the front surface of the fixing frame and slides on the outer wall of the slide rod.

[0008] As a further description of the above technical solution:

[0009] The sliding rod and the fixed frame are elastically connected by a return spring.

[0010] As a further description of the above technical solution:

[0011] The drive assembly includes a support frame, the front end of which is fixedly connected to the rear end of the Y-axis sliding frame.

[0012] As a further description of the above technical solution:

[0013] An electric push rod is installed at the lower end of the support frame.

[0014] As a further description of the above technical solution:

[0015] A push plate is fixedly connected to the front end of the output shaft of the electric push rod.

[0016] As a further description of the above technical solution:

[0017] The left end of the clamping block is arc-shaped, and both the upper and lower surfaces of the clamping block are provided with bevels.

[0018] As a further description of the above technical solution:

[0019] The sliding rod and return spring are provided in multiple sets, and the multiple sets of sliding rod and return spring are symmetrically arranged with the center line of the fixed frame as the axis of symmetry.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting a movable clamping block, when the cutting tool contacts the clamping block, the clamping block will be forced to move outward without deformation, thus reducing fatigue wear. At the same time, the use of a limiting groove to restrict the movement of the cylindrical block can prevent the clamping block from moving outward at will to unlock. The overall device has a long service life and good clamping stability.

[0022] 2. In this utility model, by connecting the drive component to the Y-axis sliding frame, when the Y-axis sliding frame moves left and right, the support frame will also be driven to move left and right. In this way, when the electric push rod pushes the push plate forward, it will only push out the sliding sleeve under the machine head. This setting can ensure the accuracy of the cutter head being pushed out. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the tool changing assembly in this utility model;

[0025] Figure 3 This is a three-dimensional structural disassembly diagram of the tool changing assembly in this utility model;

[0026] Figure 4 This is a bottom-view, disassembled three-dimensional structure diagram of the tool changing assembly in this utility model;

[0027] Figure 5 This is a rear view of the three-dimensional structure of the overall device in this utility model.

[0028] Legend:

[0029] 1. Machine base; 2. X-axis sliding frame; 3. Y-axis sliding frame; 4. Machine head; 5. Tool changing assembly; 51. Fixing sleeve; 52. Fixing frame; 53. Sliding rod; 54. Sliding sleeve; 55. Clamping block; 56. Cylindrical block; 57. Sliding rod; 58. Return spring; 59. Limiting groove; 510. Clamping spring; 6. Drive assembly; 61. Support frame; 62. Electric push rod; 63. Push plate; 7. Cutting tool. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 - Figure 3 This utility model provides an embodiment of an automatic tool changing device for a CNC cutting machine, including a machine base 1 for supporting sheet metal, an X-axis sliding frame 2 installed on the outer wall of the machine base 1, the X-axis sliding frame 2 being movable back and forth on the outer wall of the machine base 1, a Y-axis sliding frame 3 installed on the upper surface of the X-axis sliding frame 2, the Y-axis sliding frame 3 being movable left and right on the upper surface of the X-axis sliding frame 2, a cutting head 4 for performing cutting operations installed on the front surface of the Y-axis sliding frame 3, a tool changing assembly 5 for storing cutting tools 7 provided on the lower surface of the X-axis sliding frame 2, the tool changing assembly 5 including a fixing sleeve 51 for supporting the entire tool changing assembly 5, the fixing sleeve 51 being fixedly connected to the lower surface of the X-axis sliding frame 2, the fixing sleeve 51 being driven to move synchronously when the X-axis sliding frame 2 moves back and forth, and a fixing frame 52 for supporting a sliding rod 53 being fixedly connected to the lower surface of the fixing sleeve 51.

[0032] Reference Figure 2 - Figure 4 The outer wall of the fixed frame 52 is slidably connected to the left and right ends of the sliding rod 53 for moving the sliding sleeve 54. The sliding sleeve 54 for accommodating the clamping block 55 is fixedly connected to the end of the sliding rod 53 near the center of the fixed frame 52. The inner wall of the sliding sleeve 54 is slidably connected to the clamping block 55 for clamping the cutting tool 7. The upper end of the clamping block 55 is fixedly connected to the cylindrical block 56 for limiting the movement trajectory of the clamping block 55. The cylindrical block 56 passes through and slides horizontally on the upper surface of the sliding sleeve 54. The cylindrical block 56 can only slide horizontally left and right. Therefore, the clamping block 55 can only move horizontally in the left and right direction. The inner wall of the clamping block 55 clamps the cutting tool 7. The lower surface of the fixed frame 52 is provided with a limiting groove 59 for limiting the movement of the cylindrical block 56. When the cylindrical block 56 is inserted into the limiting groove 59, the cylindrical block 56 will be restricted from moving outward. The rear end of the Y-axis sliding frame 3 is provided with a drive assembly 6 for moving the sliding sleeve 54.

[0033] Reference Figure 3 - Figure 5 The clamping block 55 is elastically connected to the inner wall of the sliding sleeve 54 via the clamping spring 510. The clamping spring 510 will push the clamping block 55 inward at all times, thus preventing the clamping block 55 from moving outward at will. The tool changing assembly 5 also includes a slide rod 57 for guiding the movement of the sliding rod 53. The slide rod 57 is fixedly connected to the front surface of the fixed frame 52, and the sliding rod 53 slides on the outer wall of the slide rod 57. By setting the slide rod 57, the sliding rod 53 can be guided to move horizontally back and forth. At the same time, the slide rod 57 can be used to support the return spring 58, thus preventing the return spring 58 from bending and deforming. The sliding rod 53 and the fixed frame 52 are elastically connected via the return spring 58. The return spring 58 will push the sliding rod 53 backward at all times, so that when the sliding rod 53 is not under force, the return spring 58 can push the sliding rod 53 to return to its original position in time. The drive assembly 6 includes a support frame 61 for driving the overall drive assembly 6 to move. The front end of the support frame 61 is fixedly connected to the rear end of the Y-axis sliding frame 3. When the Y-axis sliding frame 3 moves left and right, the support frame 61 will also be driven to move synchronously.

[0034] Reference Figure 3 - Figure 5 The lower end of the support frame 61 is equipped with an electric push rod 62 for providing thrust. The front end of the output shaft of the electric push rod 62 is fixedly connected to a push plate 63 for pressing the sliding sleeve 54. By starting the electric push rod 62 and pushing the push plate 63, the sliding sleeve 54 can be moved forward. The left end of the clamping block 55 is set to be arc-shaped. When the arc-shaped edge of the clamping block 55 is pressed, the clamping block 55 will be forced to move outward and open. The upper and lower surfaces of the clamping block 55 are both provided with bevels. When the bevels are pressed, the clamping block 55 will also move outward and open. There are multiple sets of slide rods 57 and return springs 58. The multiple sets of slide rods 57 and return springs 58 are symmetrically arranged with the center line of the fixed frame 52 as the axis of symmetry.

[0035] Working principle: When a tool change is required, the original cutting tool 7 must first be placed back into the tool changer assembly 5. At this time, the Y-axis sliding frame 3 can be adjusted to move the head 4 above the cutting tool 7 to be used. Then, the head 4 can be started to move the cutting tool 7 installed below it to the front of the corresponding clamping block 55. After that, the electric push rod 62 can be started to drive the push plate 63 to push the sliding sleeve 54 forward. The forward movement of the sliding sleeve 54 will drive the clamping block 55 forward. When the clamping block 55 contacts the cutting tool 7, the clamping block 55 will move outward and unfold. After the clamping block 55 continues to move and wraps around the outer wall of the cutting tool 7, the clamping spring 510 will push the clamping block 55 to move it to the middle position to wrap and fix the cutting tool 7. Then, the head 4 can be adjusted to separate the head 4 from the cutting tool 7. Then, the head 4 can be moved upward to offset it from the cutting tool 7. At this time, the electric push rod 62 can be started again to drive its output shaft to retract. This completes the operation of putting back the cutting tool 7.

[0036] After the old cutting tool 7 is returned, the Y-axis sliding bracket 3 can be moved to move the machine head 4 above the cutting tool 7 to be used. Then, the electric push rod 62 can be activated to push the sliding sleeve 54 to move the cutting tool 7 below the machine head 4. Then, the machine head 4 can be activated to move downwards so that the machine head 4 can be sleeved on the outer wall of the cutting tool 7. Then, the machine head 4 can be adjusted to connect the machine head 4 and the cutting tool 7. Then, the electric push rod 62 can be activated to retract the push plate 63. After the push plate 63 retracts, the return spring 58 will push the sliding rod 53 to move the clamping block 55 away from the outer wall of the cutting tool 7. In this way, one tool change operation is completed.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic tool changer for a numerical control cutting machine comprising a table (1), characterized in that: An X-axis sliding frame (2) is installed on the outer wall of the machine tool (1). A Y-axis sliding frame (3) is installed on the upper surface of the X-axis sliding frame (2). A machine head (4) is installed on the front surface of the Y-axis sliding frame (3). A tool changing assembly (5) is provided on the lower surface of the X-axis sliding frame (2). The tool changing assembly (5) includes a fixing sleeve (51). The fixing sleeve (51) is fixedly connected to the lower surface of the X-axis sliding frame (2). A fixing frame (52) is fixedly connected to the lower surface of the fixing sleeve (51). Sliding brackets are slidably connected to the left and right ends of the outer wall of the fixing frame (52). The sliding rod (53) has a sliding sleeve (54) fixedly connected to one end near the center of the fixed frame (52). A clamping block (55) is slidably connected to the inner wall of the sliding sleeve (54). A cylindrical block (56) is fixedly connected to the upper end of the clamping block (55). The cylindrical block (56) passes through and slides horizontally on the upper surface of the sliding sleeve (54). A cutting tool (7) is clamped in the inner wall of the clamping block (55). A limit groove (59) is provided on the lower surface of the fixed frame (52). A drive assembly (6) is provided at the rear end of the Y-axis sliding frame (3).

2. An automatic tool changer for a numerically controlled cutting machine according to claim 1, characterized in that: The clamping block (55) is elastically connected to the inner wall of the sliding sleeve (54) by a clamping spring (510). The tool changing assembly (5) also includes a slide rod (57), which is fixedly connected to the front surface of the fixing frame (52). The sliding rod (53) slides on the outer wall of the slide rod (57).

3. An automatic tool changer for a numerically controlled cutting machine according to claim 2, characterized in that: The sliding rod (53) and the fixed frame (52) are elastically connected by a return spring (58).

4. The automatic tool changer of claim 1, wherein: The drive assembly (6) includes a support frame (61), the front end of which is fixedly connected to the rear end of the Y-axis sliding frame (3).

5. An automatic tool changer for a numerically controlled cutting machine according to claim 4, characterized in that: An electric push rod (62) is installed at the lower end of the support frame (61).

6. An automatic tool changer for a numerically controlled cutting machine according to claim 5, wherein: A push plate (63) is fixedly connected to the front end of the output shaft of the electric push rod (62).

7. An automatic tool changer for a numerically controlled cutting machine as defined in claim 1, wherein: The left end of the clamping block (55) is set to be arc-shaped, and both the upper and lower surfaces of the clamping block (55) are provided with bevels.

8. The automatic tool changer for a CNC cutting machine according to claim 3, characterized in that: Multiple sets of slide rods (57) and return springs (58) are provided, and the multiple sets of slide rods (57) and return springs (58) are symmetrically arranged with the center line of the fixing frame (52) as the axis of symmetry.

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