Tool changing device for chain type tool magazine

Abstract

The present invention belongs to the technical field of chain tool magazines, and in particular to a tool changing device for a chain tool magazine. The following scheme is proposed, including a tool magazine frame and a chain belt of an annular structure, wherein the outer wall of the chain belt is connected to a plurality of tool sleeve mechanisms; the tool sleeve mechanism is provided with a tool sleeve that is rotatably connected by a torsion spring; a knife outlet is provided at the bottom of the tool magazine frame, and an electric guide rail 1 is provided on the side of the knife outlet close to the guide plate 1, and an electric guide rail 2 is provided on the other side of the knife outlet, and a drive frame 1 corresponding to the guide plate 1 is connected to one side of the electric guide rail 1, and a drive frame 2 corresponding to the guide plate 2 is connected to one side of the electric guide rail 2. The present invention realizes the knife outlet and tool changing operation of the tool sleeve mechanism through the two-stage drive of the drive frame 1 and the drive frame 2, thereby improving the stability and safety of tool changing, and can adjust the angle of the tool head according to actual needs to ensure the safety of tool heads at various angles.

Description

Technical Field

[0001] The invention relates to the technical field of chain type tool magazine, and in particular to a tool changing device for the chain type tool magazine. Background Art

[0002] Automatic tool changing CNC machining centers mostly use tool magazine type automatic tool changing devices, and chain type tool magazine is a common tool magazine structure.

[0003] Referring to the Chinese patent with patent announcement number CN216939634U, a chain-type tool magazine for a CNC machining center is disclosed, including a tool magazine body and a tool changing mechanism used in conjunction with the tool magazine, wherein a chain is arranged on the tool magazine body, a tool is arranged on the chain, an elastic tool clamping arm is arranged on the tool, and the chain is driven by a power transmission mechanism. The invention is characterized in that the chain also includes a tool magazine mounting frame and a fixed plate, wherein the tool magazine body is connected to the fixed plate, a clamping strip protruding outward is arranged at the bottom of the fixed plate, a panel on the tool magazine mounting frame is provided with a groove matching the clamping strip on the fixed plate, and the fixed plate is clamped in the groove of the tool magazine mounting frame through the clamping strip.

[0004] The above scheme is the same as the common chain-type tool magazine in the prior art in the tool changing position, and only a single tool changing drive structure is provided. However, when this single tool changing drive structure fails or shifts after long-term use, there will be safety hazards in the tool changing process or in the rebound process after a large deflection. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a tool changing device for a chain-type tool magazine.

[0006] The present invention proposes a tool changing device for a chain-type tool magazine, comprising a tool magazine frame and a chain belt of an annular structure, wherein the outer wall of the chain belt is connected to a plurality of tool sleeve mechanisms; the tool sleeve mechanism is provided with a tool sleeve rotatably connected by a torsion spring, one end of the tool sleeve is detachably connected to a guide rod, one end of the guide rod is fixed with a tool head, the end of the tool sleeve away from the tool head is fixed with a guide plate 1, and the top of the tool sleeve is fixed with a guide plate 2; a knife outlet is provided at the bottom position of the tool magazine frame, an electric guide rail 1 is provided on the side of the knife outlet close to the guide plate 1, and an electric guide rail 2 is provided on the other side of the knife outlet, the electric guide rail 1 and the electric guide rail 2 are both vertically arranged, one side of the electric guide rail 1 is connected to a drive frame 1 corresponding to the guide plate 1, and one side of the electric guide rail 2 is connected to a drive frame 2 corresponding to the guide plate 2.

[0007] Preferably, the tool magazine rack is provided with a bottom plate, an external rack is fixed to the outer edge of the bottom plate, a plurality of internal racks are fixed to the inner edge of the bottom plate, and a top plate is fixed to the top of the external rack.

[0008] Preferably, four rollers are arranged inside the chain belt, the rollers are placed vertically, the ends of the rollers are transmission-connected to a motor, and the chain belt is in sliding contact with the outer wall of the built-in frame.

[0009] Preferably, the knife sleeve mechanism is also provided with a connecting frame fixed to the chain belt, a mounting frame is fixed to the bottom of the connecting frame, the bottom ends of both sides of the mounting frame are rotatably connected to mounting shafts through torsion springs, and the mounting shafts are fixedly connected to the knife sleeve.

[0010] Preferably, an axle is fixed to the end of the connecting frame away from the chain belt, a ball is rotatably connected to the outer wall of the axle, a stabilizing frame is fixed to the inner side of the external frame, a stabilizing groove is provided at the position of the stabilizing frame corresponding to the ball, and the ball rolls in a limited position in the stabilizing groove.

[0011] Preferably, a plurality of balls are rollingly connected to the top of the bottom plate at a position corresponding to the knife sleeve, and the balls are distributed at both ends of the mounting shaft, and the outer walls of the balls are in contact with the bottom of the knife sleeve.

[0012] Preferably, the ends of the driving frame 1 and the driving frame 2 close to the knife sleeve are both provided with a through groove 1, and a contact ball is provided in the through groove 1 for limiting rolling.

[0013] Preferably, an electromagnetic block is arranged above the knife outlet, a positioning frame is installed between the electromagnetic block and the stabilizing frame, and the electromagnetic block is arranged at one end of the mounting frame close to the knife head.

[0014] Preferably, the ends of the guide plate 1 and the guide plate 2 away from the knife sleeve are both provided with a through groove 2, and a magnetic sheet is fixed in the through groove 2.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the tool holder mechanism's tool-exiting and tool-changing operations are realized through two-stage driving of drive frame 1 and drive frame 2, thereby improving the stability and safety of tool changing, and the tool head angle can be adjusted according to actual needs to ensure the safety of tool heads at various angles.

[0017] 2. In the present invention, the balance of the connecting frame is maintained by the rolling of the balls in the stable groove, and the two ends of the tool sleeve are limited by the balls distributed at the two ends of the mounting shaft to avoid damage to the tool sleeve mechanism due to shaking and deflection of the tool sleeve as the chain belt moves, so as to further improve the long-term use effect of the overall chain tool magazine.

[0018] 3. In the present invention, when the knife sleeve just starts to deflect, the electromagnetic block is energized to magnetically repel the magnetic sheet on the guide plate 2 to help overcome the resistance when the knife sleeve starts to rotate. When the knife sleeve rotates vertically downward with the cutter head, the guide plate 1 moves vertically upward and approaches the electromagnetic block, and the electromagnetic block is energized to magnetically adsorb the magnetic sheet on the guide plate 1, thereby further improving the stability of the cutter head during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall upper structure of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0020] Figure 2 A schematic diagram of the chain belt structure of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the overall lower structure of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0022] Figure 4 A schematic diagram of the distribution structure of a tool sleeve mechanism of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0023] Figure 5 A schematic diagram of the structure of a tool sleeve mechanism of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0024] Figure 6 A schematic diagram of the state of a tool sleeve mechanism of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0025] Figure 7 A schematic diagram of the second structure of a tool sleeve mechanism of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0026] Figure 8 It is a schematic diagram of the three structural states of the tool sleeve mechanism of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0027] Fig. 9 A schematic diagram of the fourth structure of a tool sleeve mechanism state of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0028] Fig.10 A schematic diagram of the tool sleeve structure of a tool changing device for a chain-type tool magazine proposed by the present invention;

[0029] Fig.11 The present invention is a schematic diagram of the partial structure of a stabilizing frame of a tool changing device for a chain-type tool magazine.

[0030] In the figure: 1 bottom plate, 101 knife edge, 2 external frame, 3 internal frame, 4 top plate, 5 motor, 6 roller, 7 chain belt, 8 knife sleeve mechanism, 9 connecting frame, 10 mounting frame, 11 knife sleeve, 12 guide rod, 13 knife head, 14 guide plate 1, 15 guide plate 2, 16 electric guide rail 1, 17 drive frame 1, 18 electric guide rail 2, 19 drive frame 2, 20 shaft rod, 21 rolling ball, 22 stabilizing frame, 23 stabilizing groove, 24 rolling ball, 25 contact ball, 26 electromagnetic block, 27 magnetic sheet. DETAILED DESCRIPTION

[0031] Example 1: Reference Figure 1-Figure 5 A tool changing device for a chain tool magazine, comprising a tool magazine frame and a chain belt 7 of an annular structure, wherein the outer wall of the chain belt 7 is connected to a plurality of tool sleeve mechanisms 8; the tool sleeve mechanism 8 is provided with a tool sleeve 11 rotatably connected by a torsion spring, one end of the tool sleeve 11 is detachably connected to a guide rod 12, one end of the guide rod 12 is fixed to a tool head 13, in a normal state, the tool sleeve 11, the guide rod 12 and the tool head 13 are horizontally placed, a guide plate 14 is fixed to the end of the tool sleeve 11 away from the tool head 13, and a guide plate 2 15 is fixed to the top of the tool sleeve 11; a knife outlet 101 is provided at the bottom position of the tool magazine frame, and an electric guide fixed to the tool magazine frame is provided on the side of the knife outlet 101 close to the guide plate 14 The electric guide rail 16 and the electric guide rail 2 18 fixed to the tool magazine frame are arranged on the other side of the knife outlet 101. The electric guide rail 16 and the electric guide rail 2 18 are both arranged vertically. One side of the electric guide rail 16 is connected to a driving frame 17 corresponding to the guide plate 14, and one side of the electric guide rail 2 18 is connected to a driving frame 2 19 corresponding to the guide plate 2 15. When in use, the motor 5 rotates the roller 6 to rotate the chain belt 7 with the ring structure, thereby rotating the multiple tool sleeve mechanisms 8 fixed on the outside of the chain belt 7, and the different tool heads 13 installed in each tool sleeve 11 are moved to the position of the knife outlet 101 for use according to needs;

[0032] When the corresponding tool head 13 is selected for tool changing operation, the corresponding tool sleeve mechanism 8 is moved to the position of the tool outlet 101 by the chain belt 7. Figure 6 As shown: the knife sleeve 11, the guide rod 12 and the knife head 13 are in a horizontal position, the guide plate 14 is arranged horizontally, the guide plate 2 15 is arranged vertically upward, the drive frame 1 17 is located below the guide plate 14, and the drive frame 2 19 is located above the guide plate 2 15;

[0033] According to the actual needs of the cutter head, mode 1 can be selected: the cutter head 13 is used in a slightly tilted setting, such as Figure 6 and Figure 7 As shown, at this time, the driving frame 19 is first moved to the position below the guide plate 15 by the electric guide rail 18, and then the driving frame 17 is moved upward by the electric guide rail 16, so that the driving frame 17 pushes up the guide plate 14 to make the knife sleeve 11, the guide rod 12 and the knife head 13 deflect slightly. At this time, the driving frame 19 is supported below the guide plate 15 and moves downward with the deflection of the guide plate 15; thus, during the small-amplitude deflection of the knife sleeve mechanism 8, the driving frame 17 and the driving frame 19 limited on both sides are used to ensure the stability of the knife head 13 when used with a small tilt; and even if the driving frame 17 or the driving frame 19 is damaged after long-term use, the other one can be used to continue to support and avoid the safety hazard of rapid deflection of the knife head 13 caused by strong rebound;

[0034] According to the actual needs of the cutter head, mode 2 can be selected: the cutter head 13 is deflected greatly for use, and in reality, the cutter head 13 is usually set vertically downward for use, such as Figure 6 , Figure 8 and Fig. 9 As shown, at this time, the driving frame 17 is first moved upward by the electric guide rail 16, so that the knife sleeve 11 and the knife head 13 are deflected, and after deflecting to a certain angle, the electric guide rail 2 18 moves the driving frame 2 19 downward, so that the driving frame 2 19 presses the guide plate 2 15 downward to make the knife sleeve 11 and the knife head 13 continue to deflect to vertical downward for use. At this time, the driving frame 17 is at the upper position close to the guide plate 14, and the two-stage drive is used to avoid the excessive range of movement of the driving mechanism to affect the portability and smoothness of the knife sleeve mechanism 8. In addition, the two-stage drive of the driving frame 17 and the driving frame 2 19 allows the driving frame 17 to be used for buffering when the driving frame 2 19 is damaged or offset during the large-scale deflection of the knife head 13, so as to avoid the knife head 13 falling off due to excessive rebound strength, thereby improving the stability of the tool change operation and the safety of tool change use;

[0035] In summary, the tool holder mechanism 8 can be driven by two-stage driving of the drive frame 1 17 and the drive frame 2 19 to realize the tool changing operation, thereby improving the stability and safety of tool changing. The angle of the tool head 13 can be adjusted according to actual needs to ensure the safety of the tool head 13 at various angles.

[0036] In the present invention, reference is made to Figure 1-Figure 5 The tool magazine frame is provided with a bottom plate 1, an external frame 2 is fixed on the outer edge of the bottom plate 1, an electric guide rail 18 is fixed to the inner wall of the external frame 2, a plurality of internal frames 3 are fixed on the inner edge of the bottom plate 1, a roller 6 is arranged outside between two adjacent internal frames 3, a top plate 4 is fixed on the top of the external frame 2, thereby forming the overall structure of the tool magazine frame, and the chain belt 7 and the tool sleeve mechanism 8 are covered and arranged to protect the tool head 13 that is not in use.

[0037] In the present invention, reference is made to Figure 1-Figure 5 Four rollers 6 are arranged on the inner side of the chain belt 7. The rollers 6 are placed vertically. The inner wall of the chain belt 7 is rotatably connected to the outer wall of the rollers 6. The end of the rollers 6 is transmission-connected to a motor 5. The motor 5 is installed between the bottom plate 1. The chain belt 7 is in sliding contact with the outer wall of the built-in frame 3, thereby realizing stable rotation of the chain belt 7.

[0038] In the present invention, reference is made to Figure 1-Figure 5 and Fig.10The knife sleeve mechanism 8 is also provided with a connecting frame 9 fixed to the chain belt 7. The connecting frame 9 is placed horizontally, and a mounting frame 10 is fixed to the bottom of the connecting frame 9. The bottom ends of both sides of the mounting frame 10 are rotatably connected to the mounting shaft through a torsion spring, and the mounting shaft is fixedly connected to the knife sleeve 11. An axle rod 20 is fixed to the end of the connecting frame 9 away from the chain belt 7, and a ball 21 is rotatably connected to the outer wall of the axle rod 20. A stabilizing frame 22 is fixed to the inner side of the external frame 2. A stabilizing groove 23 is provided at the position corresponding to the stabilizing frame 22 and the ball 21. The ball 21 is limited and rolled in the stabilizing groove 23. The installation of the knife sleeve 11 is realized through the connecting frame 9 and the mounting frame 10, and the balance of the connecting frame 9 is maintained by the rolling of the ball 21 in the stabilizing groove 23, thereby ensuring the stability of the connecting frame 9 with the mounting frame 10 and the knife sleeve 11 during the movement of the chain belt 7.

[0039] In the present invention, reference is made to Figure 1-Figure 5 and Figure 10-11 A plurality of balls 24 are rollingly connected at the top of the bottom plate 1 and the position corresponding to the tool sleeve 11, and the balls 24 are distributed at both ends of the mounting shaft, and the outer walls of the balls 24 are in contact with the bottom of the tool sleeve 11. On the one hand, the balls 24 at the bottom are used to improve the smooth movement of the tool sleeve 11, and on the other hand, the balls 24 distributed at both ends of the mounting shaft are used to limit the two ends of the tool sleeve 11 to avoid the tool sleeve mechanism 8 from being damaged by shaking and deflecting during the movement of the tool sleeve 11 with the chain belt 7, so as to further improve the long-term use effect of the overall chain tool magazine.

[0040] In the present invention, reference is made to Figure 1-Figure 5 and Figure 10-11 The ends of the driving frame 17 and the driving frame 2 19 close to the tool sleeve 11 are both provided with a through groove 1, and a contact ball 25 is provided in the through groove 1 for limiting rolling. The contact ball 25 with a spherical structure enables stable contact between the driving frame 17 and the guide plate 14, as well as between the driving frame 2 19 and the guide plate 2 15 at all angles, so as to ensure the stability of the two-stage drive for the rotation of the tool sleeve 11.

[0041] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 11, a tool changing device for a chain-type tool magazine, based on embodiment 1, an electromagnetic block 26 is arranged above the knife outlet 101, a positioning frame is installed between the electromagnetic block 26 and the stabilizing frame 22, the electromagnetic block 26 is arranged at one end of the mounting frame 10 close to the cutter head 13, when the knife sleeve 11 and the cutter head 13 are arranged horizontally, the electromagnetic block 26 is arranged between the mounting frame 10 and the guide plate 2 15, and the ends of the guide plate 1 14 and the guide plate 2 15 away from the knife sleeve 11 are both provided with a through groove 2, and a magnetic sheet 27 is fixed in the through groove 2, when the knife sleeve 11 just starts to deflect, the electromagnetic block 26 is energized to magnetically repel the magnetic sheet 27 on the guide plate 2 15, to assist in overcoming the resistance when the knife sleeve 11 starts to rotate, when the knife sleeve 11 rotates with the cutter head 13 to vertically downward, the guide plate 1 14 vertically approaches the electromagnetic block 26, and the electromagnetic block 26 is energized to magnetically adsorb the magnetic sheet 27 on the guide plate 1 14, thereby further improving the stability of the cutter head 13 during use.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tool changing device for a chain-type tool magazine, comprising a tool magazine frame and a chain belt (7) of an annular structure, characterized in that: The outer wall of the chain belt (7) is connected to a plurality of knife sleeve mechanisms (8); The knife sleeve mechanism (8) is provided with a knife sleeve (11) rotatably connected via a torsion spring, one end of the knife sleeve (11) is detachably connected to a guide rod (12), one end of the guide rod (12) is fixed to a knife head (13), one end of the knife sleeve (11) away from the knife head (13) is fixed to a guide plate 1 (14), and the top of the knife sleeve (11) is fixed to a guide plate 2 (15); A knife outlet (101) is arranged at the bottom of the tool magazine frame, an electric guide rail 1 (16) is arranged on one side of the knife outlet (101) close to the guide plate 1 (14), and an electric guide rail 2 (18) is arranged on the other side of the knife outlet (101), the electric guide rail 1 (16) and the electric guide rail 2 (18) are both arranged vertically, one side of the electric guide rail 1 (16) is connected to a drive frame 1 (17) corresponding to the guide plate 1 (14), and one side of the electric guide rail 2 (18) is connected to a drive frame 2 (19) corresponding to the guide plate 2 (15), the tool magazine frame is provided with a bottom plate (1), an external frame (2) is fixed to the outer edge of the bottom plate (1), a plurality of internal frames (3) are fixed to the inner edge of the bottom plate (1), and a top plate (4) is fixed to the top of the external frame (2); The knife sleeve mechanism (8) is also provided with a connecting frame (9) fixed to the chain belt (7), a mounting frame (10) is fixed at the bottom of the connecting frame (9), the bottom ends of both sides of the mounting frame (10) are rotatably connected to mounting shafts via torsion springs, the mounting shafts are fixedly connected to the knife sleeve (11), an axle (20) is fixed to the end of the connecting frame (9) away from the chain belt (7), a rolling ball (21) is rotatably connected to the outer wall of the axle (20), a stabilizing frame (22) is fixed to the inner side of the external frame (2), a stabilizing groove (23) is provided at a position corresponding to the stabilizing frame (22) and the rolling ball (21), and the rolling ball (21) is limited and rolls in the stabilizing groove (23); An electromagnetic block (26) is arranged above the knife outlet (101), and a positioning frame is installed between the electromagnetic block (26) and the stabilizing frame (22). The electromagnetic block (26) is arranged at one end of the mounting frame (10) close to the knife head (13). The ends of the guide plate 1 (14) and the guide plate 2 (15) away from the knife sleeve (11) are both provided with a second through groove, and a magnetic sheet (27) is fixed in the second through groove.

2. A tool changing device for a chain-type tool magazine according to claim 1, characterized in that: Four rollers (6) are arranged inside the chain belt (7), the rollers (6) are placed vertically, the ends of the rollers (6) are drivingly connected to the motor (5), and the chain belt (7) is in sliding contact with the outer wall of the built-in frame (3).

3. A tool changing device for a chain-type tool magazine according to claim 2, characterized in that: A plurality of balls (24) are rollingly connected at a position corresponding to the knife sleeve (11) on the top of the bottom plate (1), and the balls (24) are distributed at both ends of the mounting shaft, and the outer walls of the balls (24) are in contact with the bottom of the knife sleeve (11).

4. A tool changing device for a chain-type tool magazine according to any one of claims 1 to 3, characterized in that: The ends of the drive frame 1 (17) and the drive frame 2 (19) close to the knife sleeve (11) are both provided with a through groove 1, and a contact ball (25) is provided in the through groove 1 for limiting rolling.

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