A welding tool quick switching device

Abstract

The present invention provides a welding fixture quick switching device, comprising multiple groups of support brackets rotatably configured on a positioner frame, two groups of support brackets are symmetrically arranged to form a fixed position for placing fixtures, and the support plates at both ends of the fixtures are installed between the two groups of support brackets through a quick release assembly; the quick release assembly includes a positioning mechanism, a zero-point positioning locking mechanism and a locking safety mechanism, the positioning mechanism and the zero-point positioning locking mechanism are fixedly installed between the support plate and the support bracket, the positioning mechanism is used for the rough positioning of the fixture and the support bracket, and the zero-point positioning locking mechanism is used for the positioning and locking of the fixture and the support bracket; the locking safety mechanism is fixedly installed at the bottom of the support bracket, and is used to prevent the fixture and the support bracket from falling off. The welding fixture quick switching device described in the present invention is simple to operate, convenient and fast, and can quickly realize the disassembly and locking of the fixture.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tooling, and in particular relates to a welding tooling quick switching device. Background Art

[0002] The traditional automatic turntable welding workstation production tooling and turntable positioning method is a round pin plus a diamond pin positioning method, and the connection structure is a screw locking structure. If different models or different types of tooling fixtures need to be switched, manual disassembly and tightening of the screws are required, which is inefficient. In addition, the traditional positioning method cannot guarantee the accuracy of each tooling fixture switch. After each tooling fixture switch, manual fine-tuning of the robot trajectory is required, which is inefficient and cannot guarantee the consistency of welding quality. Therefore, a welding tooling quick switching device is urgently needed. Summary of the invention

[0003] In view of this, the present invention aims to propose a welding tool quick switching device to solve the problem of complicated procedures, low switching accuracy and low switching efficiency when switching welding tool fixtures.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A welding fixture quick switching device comprises a plurality of support brackets rotatably arranged on a positioner frame, two groups of support brackets are symmetrically arranged to form a fixed position for placing fixtures, and support plates at both ends of the fixture are installed between the two groups of support brackets through quick-release components;

[0006] The quick-release assembly includes a positioning mechanism, a zero-point positioning locking mechanism and a locking insurance mechanism. The positioning mechanism and the zero-point positioning locking mechanism are fixedly installed between the support plate and the support bracket. The positioning mechanism is used for the rough positioning of the fixture and the support bracket, and the zero-point positioning locking mechanism is used for the positioning and locking of the fixture and the support bracket.

[0007] The locking safety mechanism is fixedly installed at the bottom end of the supporting bracket and is used to prevent the tooling fixture and the supporting bracket from falling off.

[0008] Furthermore, the support bracket is rotatably mounted on the positioner frame through a rotating mechanism;

[0009] The support bracket is a T-shaped structure, the vertical plate of the support bracket is fixedly installed on the rotating mechanism, and a fixing plate is fixedly arranged on the horizontal plate of the support bracket;

[0010] The bottom end of the horizontal plate of the support bracket is also provided with a plurality of groups of reinforcing ribs.

[0011] Furthermore, the quick-release device also includes a plurality of limit mechanisms, each of which includes a cylinder 1, which is fixedly mounted in the positioner frame, and a limit pin 1 is fixedly mounted on the output shaft end of the cylinder 1, and the limit pin 1 penetrates the outer side of the positioner frame;

[0012] A limit block is fixedly installed on one end of the vertical plate of the support bracket close to the positioner frame, and a limit hole corresponding to the limit pin is arranged on the limit block.

[0013] Further, the number of positioning mechanisms is multiple groups, each group of positioning mechanisms includes a guide pin and a guide sleeve, the guide pin is fixedly mounted on the bottom end of the support plate, the guide sleeve is fixedly mounted on the fixed plate, the fixed plate is provided with an assembly hole for mounting the guide sleeve, the guide sleeve is provided with a guide through hole, and the guide pin moves axially in the guide through hole;

[0014] A through hole corresponding to the guide pin is arranged on the horizontal plate of the support bracket.

[0015] Furthermore, the number of zero-point positioning locking mechanisms is multiple groups, and each group of zero-point positioning locking mechanisms includes a zero-point positioning locking pin and a zero-point positioning quick-change clamp; the zero-point positioning locking pin is fixedly mounted on the bottom end of the support plate, the zero-point positioning quick-change clamp is fixedly mounted on the fixed plate, and a through hole corresponding to the zero-point positioning quick-change clamp is provided on the horizontal plate of the support bracket;

[0016] The zero-point positioning locking pin and the zero-point positioning quick-change clamp are cooperatively arranged to lock and fix the tooling fixture on the supporting bracket.

[0017] Furthermore, the number of locking safety mechanisms is also multiple groups, each group of locking safety mechanisms includes cylinder 2, a fixed bracket and limit pin 2, a placement position corresponding to cylinder 2 is provided on the horizontal plate of the support bracket, cylinder 2 is fixedly installed on the bottom end of the horizontal plate through the fixed bracket, the output shaft end of cylinder 2 is fixedly connected to the limit plate, and the limit plate is provided with a limit hole for clamping the limit pin 2;

[0018] The fixed bracket is a U-shaped structure, and the fixed bracket is fixedly installed at the bottom end of the horizontal plate, the fixed bracket opening faces the second cylinder, the inner side of the fixed bracket is connected to the insertion groove corresponding to the limit plate, and the limit plate is movably inserted into the insertion groove;

[0019] The second limit pin is fixedly installed at the bottom end of the support plate. The pin column of the second limit pin passes through the outside of the cross plate. The outer surface of the pin column of the second limit pin is provided with a limit groove. The limit groove and the limit plate are cooperated to lock the second limit pin.

[0020] Furthermore, a fixing piece is fixedly arranged at the bottom end of the fixing bracket, and a sensor 1 for sensing whether the limit pin 2 is in place is fixedly installed on the fixing piece;

[0021] A second sensor for sensing whether the limit plate is in place is fixedly installed at the end of the fixed bracket;

[0022] Both sensor 1 and sensor 2 are connected to a PLC control unit.

[0023] Compared with the prior art, the welding tool quick switching device described in the present invention has the following beneficial effects:

[0024] (1) The welding fixture quick switching device of the present invention utilizes the cooperation of a limit mechanism, a positioning mechanism, a zero-point positioning locking mechanism and a locking safety mechanism to realize the quick replacement of fixtures and support brackets, thereby solving the complexity of using screws to lock fixtures, ensuring the accuracy of switching fixtures and reducing the time for installing and removing fixtures;

[0025] (2) The welding tooling quick-switching device described in the present invention is simple to operate, convenient and quick, and can quickly realize the disassembly and locking of tooling fixtures. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of a welding tool quick switching device according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the detailed structure of the first part of a welding tool quick switching device according to an embodiment of the present invention;

[0029] Figure 3 This is a detailed structural diagram of the second part of a welding tool quick switching device according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the detailed structure of the third part of a welding tool quick switching device described in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1-positioner frame; 2-rotating mechanism; 3-tooling fixture; 301-support plate; 4-support bracket; 5-fixed plate; 6-positioning mechanism; 601-guide pin; 602-guide sleeve; 7-zero-point positioning locking mechanism; 701-zero-point positioning locking pin; 702-zero-point positioning quick-change clamp; 8-locking insurance mechanism; 801-cylinder two; 802-fixed bracket; 803-limiting pin two; 8031-limiting slot; 804-limiting plate; 8041-limiting hole; 805-fixing piece; 806-sensor one; 807-sensor two; 9-limiting mechanism; 901-cylinder one; 902-limiting pin one; 903-limiting block. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] See also Figure 1As shown, a welding fixture quick switching device includes multiple groups of support brackets 4 rotatably configured on a positioner frame 1, two groups of support brackets 4 are symmetrically arranged to form a fixed position for placing a fixture 3, and support plates 301 at both ends of the fixture 3 are installed between the two groups of support brackets 4 through quick-release components;

[0038] like Figure 3 As shown, the quick-release assembly includes a positioning mechanism 6, a zero-point positioning locking mechanism 7 and a locking safety mechanism 8. The positioning mechanism 6 and the zero-point positioning locking mechanism 7 are fixedly installed between the support plate 301 and the support bracket 4. The positioning mechanism 6 is used for the rough positioning of the fixture 3 and the support bracket 4, and the zero-point positioning locking mechanism 7 is used for the positioning and locking of the fixture 3 and the support bracket 4.

[0039] The locking safety mechanism 8 is fixedly installed at the bottom end of the supporting bracket 4, and is used to prevent the tooling fixture 3 and the supporting bracket 4 from falling off; the positioning mechanism 6, the zero-point positioning locking mechanism 7, the locking safety mechanism 8, and the limit mechanism 9 are all electrically connected to the PLC control unit, and each mechanism is arranged in coordination, and the operation of each mechanism is controlled by the PLC control system to realize the rapid disassembly and locking of the tooling fixture 3.

[0040] The support bracket 4 is rotatably mounted on the positioner frame 1 through the rotating mechanism 2;

[0041] The support bracket 4 is a T-shaped structure, the vertical plate of the support bracket 4 is fixedly mounted on the rotating mechanism 2, and a fixing plate 5 is fixedly arranged on the horizontal plate of the support bracket 4;

[0042] The bottom end of the horizontal plate of the support bracket 4 is also provided with a plurality of groups of reinforcing ribs.

[0043] like Figure 2 As shown, the quick release device also includes a plurality of limit mechanisms 9, each of which includes a cylinder 901, which is fixedly installed in the positioner frame 1, and a limit pin 902 is fixedly installed on the output shaft end of the cylinder 901, and the limit pin 902 penetrates the outer side of the positioner frame 1;

[0044] A limit block 903 is fixedly installed on one end of the vertical plate of the support bracket 4 close to the positioner frame 1, and a limit hole 8041 corresponding to the limit pin 1 902 is provided on the limit block 903.

[0045] like Figure 2 As shown, the number of positioning mechanisms 6 is multiple groups, and each group of positioning mechanisms 6 includes a guide pin 601 and a guide sleeve 602. The guide pin 601 is fixedly mounted on the bottom end of the support plate 301, and the guide sleeve 602 is fixedly mounted on the fixed plate 5. The fixed plate 5 is provided with an assembly hole for mounting the guide sleeve 602. The guide sleeve 602 is provided with a guide through hole, and the guide pin 601 moves axially in the guide through hole.

[0046] A through hole corresponding to the guide pin 601 is provided on the transverse plate of the support bracket 4 , and the guide pin 601 extends into the guide sleeve 602 to achieve rough positioning between the fixture 3 and the support bracket 4 .

[0047] like Figure 3 As shown, the number of zero-point positioning locking mechanisms 7 is multiple groups, and each group of zero-point positioning locking mechanisms 7 includes a zero-point positioning locking pin 701 and a zero-point positioning quick-change clamp 702; the zero-point positioning locking pin 701 is fixedly mounted on the bottom end of the support plate 301, and the zero-point positioning quick-change clamp 702 is fixedly mounted on the fixed plate 5, and a through hole corresponding to the zero-point positioning quick-change clamp 702 is provided on the horizontal plate of the support bracket 4;

[0048] The zero-point positioning locking pin 701 and the zero-point positioning quick-change clamp 702 are cooperatively arranged to lock and fix the tooling fixture 3 on the support bracket 4; the zero-point positioning locking mechanism 7 in this patent application adopts a zero-point positioning system of the Zero Point Clamping Systems 106 model; the zero-point positioning system is a mature technology and is a component purchased on-site, and this patent application does not improve it.

[0049] like Figure 4 As shown, the number of locking safety mechanisms 8 is also multiple groups, each group of locking safety mechanisms 8 includes a second cylinder 801, a fixed bracket 802 and a second limit pin 803, and a placement position corresponding to the second cylinder 801 is provided on the horizontal plate of the support bracket 4. The second cylinder 801 is fixedly installed on the bottom end of the horizontal plate through the fixed bracket 802, and the output shaft end of the second cylinder 801 is fixedly connected to the limit plate 804, and the limit plate 804 is provided with a limit hole 8041 for clamping the second limit pin 803;

[0050] The fixed bracket 802 is a U-shaped structure, and the fixed bracket 802 is fixedly installed at the bottom end of the horizontal plate, and the fixed bracket 802 opens toward the second cylinder 801, and the inner side of the fixed bracket 802 is connected to the insertion groove corresponding to the limit plate 804, and the limit plate 804 is movably inserted into the insertion groove;

[0051] The second limit pin 803 is fixedly installed at the bottom end of the support plate 301, and the pin column of the second limit pin 803 extends to the outer side of the horizontal plate. The outer surface of the pin column of the second limit pin 803 is provided with a limit groove 8031, and the limit groove 8031 ​​is cooperated with the limit plate 804 to lock the second limit pin 803; after the second limit pin 803 falls into place, the second cylinder 801 is actuated to drive the limit plate 804 to move along the plug-in slot, and the limit hole 8041 provided on the limit plate 804 is used to cooperate with the limit groove 8031 ​​provided on the second limit pin 803 to realize the locking of the second limit pin 803, thereby preventing the tooling fixture 3 from being separated from the support bracket 4.

[0052] A fixing member 805 is also fixedly provided at the bottom end of the fixing bracket 802, and a sensor 806 for sensing whether the second limit pin 803 is in place is fixedly installed on the fixing member 805;

[0053] The end of the fixed bracket 802 is fixedly installed with a second sensor 807 for sensing whether the limit plate 804 is in place; the first sensor 806 and the second sensor 807 are both purchased on site, and this technical solution does not improve them, so this patent application will not be further described;

[0054] Sensor 1 806 and sensor 2 807 are both connected to a PLC control unit, which controls the operation of sensor 1 806 and sensor 2 807 to sense whether the limit pin is in place; the PLC control system is an existing mature system, and this patent application does not improve it, and this patent application will not be further described.

[0055] When this solution is implemented, the positioner is turned to the horizontal position, and the control cylinder 901 drives the limit pin 902 to extend into the limit block 903, so that the support bracket 4 can be limited to the horizontal position. When replacing the fixture 3, the position of the fixture 3 and the support bracket 4 is roughly calibrated, and the guide pins 601 of the four-group positioning mechanism 6 are aligned with the guide through holes of the corresponding guide sleeves 602 and fall. During the falling process, the fixture 3 is gradually straightened. After landing, the four-group zero-point positioning locking mechanism 7 is activated to fix and lock the fixture 3 on the support bracket 4 to prevent the fixture 3 from being stuck. After being separated from the supporting bracket 4 and fixed and locked, the sensor 806 detects whether the limit pin 902 is accurately in place, and the cylinder 801 of the locking safety mechanism 8 is actuated to drive the limit plate 804 to be inserted into the limit slot 8031 ​​in the fixed bracket 802. At this time, the limit pin 803 and the limit hole 8041 provided on the limit plate 804 are mechanically locked, and the sensor 807 detects whether the limit plate 804 is locked in place to prevent the zero-point positioning locking mechanism 7 from failing to lock and causing the tooling fixture 3 to fall off. The locking safety mechanism 8 mainly plays a safety role.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding tool fast switching device, comprising a plurality of support brackets (4) rotatably arranged on a positioner frame (1), wherein: The two groups of support brackets (4) are symmetrically arranged to form a fixed position for placing the fixture (3), characterized in that: the support plates (301) at both ends of the fixture (3) are installed between the two groups of support brackets (4) through quick-release components; The quick-release assembly comprises a positioning mechanism (6), a zero-point positioning locking mechanism (7) and a locking safety mechanism (8); the positioning mechanism (6) and the zero-point positioning locking mechanism (7) are fixedly installed between the support plate (301) and the support bracket (4); the positioning mechanism (6) is used for the rough positioning of the fixture (3) and the support bracket (4); and the zero-point positioning locking mechanism (7) is used for the positioning and locking of the fixture (3) and the support bracket (4); The locking safety mechanism (8) is fixedly mounted on the bottom end of the support bracket (4) to prevent the tooling fixture (3) and the support bracket (4) from falling off; The support bracket (4) is rotatably mounted on the positioner frame (1) via a rotating mechanism (2); The support bracket (4) is a T-shaped structure, the vertical plate of the support bracket (4) is fixedly mounted on the rotating mechanism (2), and a fixing plate (5) is fixedly arranged on the horizontal plate of the support bracket (4); The bottom end of the horizontal plate of the support bracket (4) is also provided with a plurality of groups of reinforcing ribs; The number of zero-point positioning locking mechanisms (7) is multiple, and each group of zero-point positioning locking mechanisms (7) includes a zero-point positioning locking pin (701) and a zero-point positioning quick-change clamp (702); the zero-point positioning locking pin (701) is fixedly mounted on the bottom end of the support plate (301), the zero-point positioning quick-change clamp (702) is fixedly mounted on the fixed plate (5), and a through hole corresponding to the zero-point positioning quick-change clamp (702) is provided on the horizontal plate of the support bracket (4); The zero-point positioning locking pin (701) and the zero-point positioning quick-change clamp (702) are cooperatively arranged to lock and fix the tooling fixture (3) on the supporting bracket (4); The number of locking safety mechanisms (8) is multiple groups, and each group of locking safety mechanisms (8) includes a second cylinder (801), a fixed bracket (802) and a second limit pin (803). A placement position corresponding to the second cylinder (801) is provided on the horizontal plate of the support bracket (4). The second cylinder (801) is fixedly mounted on the bottom end of the horizontal plate through the fixed bracket (802). The output shaft end of the second cylinder (801) is fixedly connected to the limit plate (804). The limit plate (804) is provided with a limit hole (8041) for clamping the second limit pin (803). The fixed bracket (802) is a U-shaped structure. The fixed bracket (802) is fixedly mounted on the bottom end of the horizontal plate. The fixed bracket (802) opens toward the second cylinder (801). The inner side of the fixed bracket (802) is provided with a plug-in slot corresponding to the limit plate (804). The limit plate (804) is movably plugged into the plug-in slot. The second limit pin (803) is fixedly installed at the bottom end of the support plate (301), and the pin column of the second limit pin (803) extends to the outer side of the horizontal plate. The outer surface of the pin column of the second limit pin (803) is provided with a limit groove (8031), and the limit groove (8031) is cooperated with the limit plate (804) to lock the second limit pin (803).

2. A welding tool quick switching device according to claim 1, characterized in that: The quick-release device also includes a plurality of groups of limiting mechanisms (9), each group of limiting mechanisms (9) includes a cylinder 1 (901), the cylinder 1 (901) is fixedly mounted in the positioner frame (1), a limiting pin 1 (902) is fixedly mounted on the output shaft end of the cylinder 1 (901), and the limiting pin 1 (902) penetrates the outer side of the positioner frame (1); A limit block (903) is fixedly installed on one end of the vertical plate of the support bracket (4) close to the positioner frame (1), and a limit hole corresponding to the limit pin 1 (902) is provided on the limit block (903).

3. The welding tool quick switching device according to claim 1, characterized in that: The number of the positioning mechanisms (6) is multiple, and each group of the positioning mechanisms (6) includes a guide pin (601) and a guide sleeve (602), the guide pin (601) is fixedly mounted on the bottom end of the support plate (301), the guide sleeve (602) is fixedly mounted on the fixed plate (5), the fixed plate (5) is provided with an assembly hole for mounting the guide sleeve (602), the guide sleeve (602) is provided with a guide through hole, and the guide pin (601) moves axially in the guide through hole; A through hole corresponding to the guide pin (601) is provided on the transverse plate of the support bracket (4).

4. The welding tool quick switching device according to claim 1, characterized in that: A fixing member (805) is also fixedly provided at the bottom end of the fixing bracket (802), and a sensor (806) for sensing whether the second limit pin (803) is in place is fixedly installed on the fixing member (805); A second sensor (807) for sensing whether the limit plate (804) is in place is fixedly mounted on the end of the fixed bracket (802); Sensor 1 (806) and sensor 2 (807) are both connected to a PLC control unit.

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