Clamp quick-changing device

Abstract

The invention relates to a fixture quick-changing device, which is used for realizing quick position switching of a plurality of fixtures and mainly comprises a rotary table, a main support and at least one side support, the main support is mechanically connected with the rotary table, the plurality of side supports are uniformly distributed around the main support and mechanically connected with the main support, and the side supports are used for mounting and fixing the fixtures. The main support can drive the side supports to rotate along with the rotary table so that the positions of the side supports can be changed. The side support is provided with at least one positioning pin assembly, at least one first clamping unit and at least one second clamping unit. The positioning pin assembly is mechanically connected with the side support to achieve clamp positioning, and the first clamping unit and the second clamping unit are mechanically connected with the side support to achieve loading, unloading, clamping and fixing of the clamp. The system is reasonable in design, good in safety, rapid in response and high in working efficiency, saves manpower and material resources, and is suitable for automatic and intelligent batch production.

Description

Technical Field

[0001] The invention belongs to the field of automobile manufacturing, and in particular relates to a fixture quick-change device. Background Art

[0002] In the field of automobile manufacturing, especially in automobile automated production lines, it is often necessary to switch between different workstations for different types of automobile parts of different models, so that robots can be used to quickly weld, rivet and turn over the workpieces. In the existing technology, it is time-consuming and labor-intensive to replace different fixtures, which affects work efficiency and cannot meet the current requirements for rapid production and assembly of various types of automobiles. Therefore, it is particularly necessary to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a fixture quick-change device, which drives the rapid switching operation of multiple fixture stations through a turntable, is adaptable to a variety of fixtures, has good versatility, improves production efficiency, and meets users' rapid production and assembly needs.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a fixture quick-change device for realizing rapid switching of the positions of multiple fixtures, mainly comprising: a turntable, a main bracket, and at least one side bracket, the main bracket is mechanically connected to the turntable, a plurality of the side brackets are evenly distributed around the main bracket and mechanically connected to the main bracket, the side bracket is used to install and fix the fixture, the main bracket can drive a plurality of the side brackets to rotate with the turntable to realize the position change of the side bracket; the side bracket is provided with at least one positioning pin assembly, at least one first clamping unit, and at least one second clamping unit; the positioning pin assembly is mechanically connected to the side bracket to realize fixture positioning, the first clamping unit and the second clamping unit are respectively mechanically connected to the side bracket and can perform opening and closing actions to realize the loading and unloading and clamping and fixing of the fixture.

[0005] Furthermore, the side bracket is also provided with a gas-electric quick-plug unit, and the gas-electric quick-plug unit is mechanically fixed on the side bracket to realize quick connection with the gas circuit and the circuit of the clamp.

[0006] Furthermore, the side bracket is also provided with a guide wheel assembly and a support wheel assembly. The guide wheel assembly and the support wheel assembly are mechanically installed on at least one of the two sides of the bottom of the side bracket to achieve the support and guiding function of the clamp and facilitate the clamp to enter and exit the workstation.

[0007] Furthermore, the side bracket is also provided with at least one quick positioning unit, and the quick positioning unit is mechanically mounted on the side bracket to realize quick pin-connection and fixation of the clamp.

[0008] Preferably, the first clamping unit, the second clamping unit, the pneumatic and electric quick-connect unit, and the quick positioning unit are provided with at least one of a driving cylinder and a driving motor.

[0009] Furthermore, the side bracket is also provided with an identification unit, and the identification unit is mechanically connected to the side bracket for realizing identification of the type of the clamp.

[0010] Preferably, it also includes: at least one partition, which is mechanically connected to the main support or the side support to achieve isolation of multiple fixture stations.

[0011] Optionally, it further includes: a counterweight assembly, which is mechanically connected to the side bracket to achieve the counterweight of the clamp quick-change device.

[0012] Furthermore, the turntable includes: a base, a motor, and a transmission mechanism. The motor is fixed on the base and drives the turntable to rotate through the transmission mechanism.

[0013] The present invention relates to a fixture quick-change device, and the beneficial effects are as follows: the present invention has a reasonable design, utilizes a turntable to drive a main bracket together with a plurality of side brackets to rotate, thereby realizing rapid switching of fixtures in a production line, utilizes a plurality of clamping units to realize rapid fixation of fixtures, has good safety, and quick response, and facilitates rapid loading and unloading of fixtures through a guide wheel assembly and a support wheel assembly, saving time and effort; utilizes an identification unit to automatically identify a variety of fixture types, thereby improving the degree of intelligence; the fixture quick-change device provided by the present invention has good safety, high working efficiency, saves manpower and material resources, and is suitable for automated and intelligent mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0015] Figure 1 A three-dimensional structural diagram of a fixture quick-change device provided in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A partial view of part A in FIG.

[0017] Figure 3 for Figure 1 A partial view of part B in FIG.

[0018] Figure 4 A three-dimensional structural diagram of a turntable provided in an embodiment of the present invention;

[0019] Figure 5A three-dimensional structural diagram of a working state of a fixture quick-change device provided by an embodiment of the present invention;

[0020] Figure 6 A three-dimensional structural diagram of a clamp seat provided in an embodiment of the present invention.

[0021] In the figure:

[0022] 1. Turntable; 11. Base; 12. Motor; 13. Transmission mechanism; 2. Main bracket; 3. Side bracket; 31. Positioning pin assembly; 32. First clamping unit; 33. Identification unit; 34. Gas-electric quick-connect unit; 35. Second clamping unit; 36. Guide wheel assembly; 37. Support wheel assembly; 38. Quick positioning unit; 4. Partition; 5. Clamp seat; 6. Counterweight assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The "upper", "lower", "left", "right", "front", "back" positions of the objects described in the embodiments in the figures are only used to indicate relative positional relationships. When the absolute positions of the objects described in the embodiments are changed, the relative positional relationships may also change accordingly.

[0025] A clamp quick-change device according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0026] Figure 1 A three-dimensional structural diagram of a fixture quick-change device provided by an embodiment of the present invention is shown; Figure 2 Shows Figure 1 A partial view of part A in FIG. Figure 3 Shows Figure 1 A partial view of part B in FIG. Figure 4 A three-dimensional structural diagram of a turntable provided in an embodiment of the present invention is shown; Figure 5 A three-dimensional structural diagram of a working state of a fixture quick-change device provided by an embodiment of the present invention is shown; Figure 6 FIG. 2 shows a three-dimensional structural diagram of a fixture seat provided by an embodiment of the present invention. Figure 1 to Figure 6As shown, a fixture quick-change device provided by an embodiment of the present invention is suitable for realizing rapid switching of the positions of various fixtures in an automobile production line. The fixture quick-change device provided by an embodiment of the present invention comprises: a turntable 1, a main bracket 2, and at least one side bracket 3, wherein the turntable 1 comprises: a base 11, a motor 12, and a transmission mechanism 13, wherein the motor 12 is fixed on the base 11 and drives the turntable 1 to rotate through the transmission mechanism 13, and the base 11 is generally fixed on the ground or a work surface to realize the position fixation of the entire fixture quick-change device, and the start and stop of the motor 12 is controlled by the control system in the production line to control the rotation angle of the turntable 1, thereby realizing rapid position switching of the fixture quick-change device; wherein the main bracket 2 is mechanically connected to the turntable 1, and a plurality of side brackets 3 are evenly distributed around the main bracket 2 and mechanically connected to the main bracket 2, and the main bracket 2 can be made into a polygonal structure according to user needs to connect multiple side brackets 3, Figure 1 A quadrilateral structure of the main bracket 2 is shown in the figure, which correspondingly includes four side brackets 3, so that four fixture stations can be placed using the four side brackets 3. Of course, the main bracket 2 can also be triangular, pentagonal, hexagonal, etc., including but not limited to the above-mentioned structures. The structure corresponding to the specific number of sides of the main bracket 2 is not limited here. Each side position of the main bracket 2 is connected and fixed with a side bracket 3, and the side bracket 3 is used to install and fix the fixture. The main bracket 2 can drive several side brackets 3 to rotate with the turntable 1 to realize the position change of the side bracket 3; the side bracket 3 in the embodiment of the present invention is made into an L shape, which can be connected with the turntable 1. Figure 6 The structure of the fixture seat 5 in the embodiment of the present invention matches the structure of the fixture seat 5, and a corresponding type of fixture is installed on the fixture seat 5 so that the fixture can be fixed on the fixture seat 5. The fixture seat 5 can be placed on the side bracket 3 and can quickly enter and exit the workstation. When the turntable 1 rotates, multiple fixture positions can be quickly switched. Of course, only one structure of the fixture seat 5 is shown here, including but not limited to Figure 6 The structural form of the clamp seat 5 shown in the figure; specifically, the side bracket 3 is provided with at least one positioning pin assembly 31, at least one first clamping unit 32, and at least one second clamping unit 35; wherein the positioning pin assembly 31 is mechanically connected to the side bracket 3 to realize the positioning of the clamp, and the positioning pin assembly 31 is pinned and positioned with the corresponding position on the clamp seat 5 to ensure that the positioning accuracy of the clamp seat 5 meets the user's requirements, and wherein the first clamping unit 32 and the second clamping unit 35 are respectively mechanically connected to the side bracket 3 and can perform opening and closing actions to realize the loading and unloading and clamping and fixing of the corresponding position on the clamp, wherein the first clamping unit 32 and the second clamping unit 35 are usually provided with a driving cylinder and equipped with a clamping block of a corresponding structural form to realize the rapid clamping and fixing of the clamp seat 5, and the first clamping unit 32 and the second clamping unit 35 can be opened and closed under the drive of the driving cylinder to facilitate the loading and unloading or clamping of the clamp on the corresponding side bracket 3. In the embodiment of the present invention, in Figure 1The figure shows the structure of the first clamping unit 32 and the second clamping unit 35 and their installation positions on the side bracket 3. Two first clamping units 32 and four second clamping units 35 are used on each side bracket 3. Of course, the number and installation positions of the first clamping units 32 and the second clamping units 35 can be adjusted accordingly according to the structure of the side bracket 3 and the clamp seat 5.

[0027] In the fixture quick-change device provided in the embodiment of the present invention, further, the side bracket 3 is also provided with a gas-electric quick-plug unit 34, which is mechanically fixed on the side bracket 3 to achieve quick connection with the gas circuit and circuit on the fixture. Specifically, the gas-electric quick-plug unit 34 here is usually provided with a driving cylinder and an interface of a corresponding structural form to achieve automatic and quick connection of the gas circuit and circuit in the fixture to achieve the purpose of controlling the action of the fixture, and the interface part in the gas-electric quick-plug unit 34 is driven by the driving cylinder to extend or retract to achieve the connection and disconnection of the gas circuit and circuit, and the action is achieved quickly; Figure 2 A structural form of the gas-electric quick-connect unit 34 is shown in the figure. The interface form of the gas circuit and the circuit in the gas-electric quick-connect unit 34 matches the gas circuit and circuit interface on the fixture. While the interfaces of various fixtures are unified, the fixture quick-change device can adapt to various fixture models, which can improve the versatility of the gas-electric quick-connect unit 34, make the fixture quick-change device more adaptable, and make the connection quick and convenient.

[0028] In the fixture quick-change device provided in an embodiment of the present invention, in order to facilitate the loading and unloading of the fixture, the side bracket 3 is further provided with a guide wheel assembly 36 and a support wheel assembly 37, wherein the guide wheel assembly 36 and the support wheel assembly 37 are mechanically installed on at least one of the two sides of the bottom of the side bracket 3 to realize the support and guiding function of the fixture and facilitate the fixture to enter and exit the workstation, wherein the support wheel assembly 37 is provided with a roller to realize the rolling support function of the fixture, making the loading and unloading of the fixture more labor-saving, and the guide wheel assembly 36 on the side of the side bracket 3 is provided with another roller that can limit and guide the fixture seat 5, thereby improving the positioning accuracy of the fixture seat 5 and facilitating the rapid replacement of the fixture seat 5 together with the corresponding fixture thereon. Figure 1 The structure and distribution of the guide wheel assembly 36 and the support wheel assembly 37 are shown in the figure. Four guide wheel assemblies 36 and four support wheel assemblies 37 are respectively arranged on both sides of the bottom of each side bracket 3. Of course, the number of guide wheel assemblies 36 and support wheel assemblies 37 and the specific installation positions can be adjusted accordingly according to user needs, and no specific restrictions are imposed here.

[0029] In the clamp quick-change device provided in the embodiment of the present invention, further, the side bracket 3 is also provided with at least one quick positioning unit 38, and the quick positioning unit 38 is mechanically installed on the side bracket 3 to realize the quick pinning and fixing of the clamp. Specifically, the quick positioning unit 38 here is provided with a driving cylinder, and the driving cylinder is used to drive the pin column in the quick positioning unit 38 to realize the rapid telescopic movement, and the pin column in the quick positioning unit 38 is used to realize the pin connection with the pin hole on the corresponding clamp, which can effectively prevent the clamp position from changing during the rotation of the clamp quick-change device, and even cause the clamp to loosen and fly out, thereby improving the safety and reliability of the clamp quick-change device; it is worth noting that the number of quick positioning units 38 used and the installation position can be adjusted according to user needs, Figure 1 and Figure 3 A structural form and installation method of a rapid positioning unit 38 are shown, including but not limited to the above-mentioned structural form and installation method. At the same time, the number of rapid positioning units 38 used and the specific installation positions can be set to one or more according to user needs. In the embodiment of the present invention, there is no restriction on the number of rapid positioning units 38 set.

[0030] The first clamping unit 32, the second clamping unit 35, the pneumatic and electric quick-connect unit 34, and the quick positioning unit 38 in the clamp quick-change device provided in the embodiment of the present invention are respectively provided with at least one of a driving cylinder and a driving motor; preferably, the first clamping unit 32, the second clamping unit 35, the pneumatic and electric quick-connect unit 34, and the quick positioning unit 38 are all or partially driven by a driving cylinder, mainly utilizing the characteristics of fast response and good economy of the driving cylinder; of course, the above-mentioned units may also be all or partially driven by motors, as long as the corresponding actions of the above-mentioned units can be realized.

[0031] In the fixture quick-change device provided in the embodiment of the present invention, in order to improve the versatility and intelligence, the side bracket 3 is also provided with an identification unit 33, and the identification unit 33 is mechanically connected to the side bracket 3 for realizing the identification of the type of fixture; through the different contact positions between one or more sensors provided on the identification unit 33 and the fixture, different signals or signal combinations are fed back to identify different types of fixtures or different vehicle models, thereby avoiding misoperation of the intelligent robot, with good safety and high intelligence.

[0032] Furthermore, the fixture quick-change device provided in the embodiment of the present invention also includes: at least one partition 4, which is mechanically connected to the main bracket 2 or the side bracket 3 to achieve isolation of multiple fixture stations to avoid the influence of adjacent fixture stations. For example, the partition 4 can reduce the influence of welding slag splashing on adjacent stations during welding, etc., to avoid pollution; preferably, the number of partitions 4 is adapted to the number of fixtures.

[0033] In the clamp quick-change device provided in the embodiment of the present invention, optionally, the clamp quick-change device also includes: a counterweight assembly 6, which is mechanically connected to the side bracket 3 to realize the counterweight of the clamp quick-change device. When the clamp quick-change device is subjected to unbalanced force due to the use of the clamp, the counterweight assembly 6 can be used to counterweight the force to prevent the clamp quick-change device from being subjected to more serious unbalanced force, reduce the wear caused by eccentricity during the rotation of the clamp quick-change device, and increase the service life of the clamp quick-change device. Figure 5 A structural form of the counterweight assembly 6 is shown in the figure, in which the counterweight assembly 6 is arranged at a workstation opposite a fixture; it is worth noting that the counterweight assembly 6 is an optional installation configuration. When the number of fixtures used is an even number, the counterweight assembly 6 can be replaced by a fixture accordingly, and the weight of the fixture itself can be used to maintain a relative balance of force on the fixture quick-change device.

[0034] Compared with the prior art, the fixture quick-change device provided by the present invention is reasonably designed. The turntable 1 is used to drive the main bracket 2 together with multiple side brackets 3 to rotate, thereby realizing rapid switching of fixtures in the production line. Multiple clamping units are used to realize rapid fixation of fixtures, with good safety and fast response. The guide wheel assembly 36 and the support wheel assembly 37 facilitate rapid loading and unloading of fixtures, saving time and effort. The identification unit 33 is used to automatically identify various types of fixtures, thereby improving the degree of intelligence. The fixture quick-change device provided by the present invention has good safety and high working efficiency, saves manpower and material resources, and is suitable for automated and intelligent mass production.

[0035] There are a few points to note:

[0036] (1) Unless otherwise defined, in the embodiments of the present invention and the accompanying drawings, the same reference numerals represent the same meanings.

[0037] (2) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0038] (3) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, some structures in the drawings may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0039] (4) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fixture quick-change device, used to achieve rapid position switching of multiple fixtures, characterized in that: include: A turntable (1), a main support (2), and at least one side support (3), wherein the main support (2) is mechanically connected to the turntable (1), a plurality of the side supports (3) are evenly distributed around the main support (2) and are mechanically connected to the main support (2), the side supports (3) are used to install a fixing fixture, and the main support (2) can drive a plurality of the side supports (3) to rotate along with the turntable (1) to achieve position change of the side supports (3); the side supports (3) are provided with at least one positioning pin assembly (31), at least one first clamping unit (32), and at least one second clamping unit (35); the positioning pin assembly (31) is mechanically connected to the side support (3) to achieve fixture positioning, the first clamping unit (32) and the second clamping unit (35) are respectively mechanically connected to the side support (3) and can perform opening and closing actions to achieve loading and unloading and clamping and fixing of the fixture.

2. The fixture quick-change device according to claim 1, characterized in that: The side bracket (3) is also provided with a gas-electric quick-connect unit (34), and the gas-electric quick-connect unit (34) is mechanically fixed on the side bracket (3) to realize a quick connection with the gas circuit and the electric circuit of the clamp.

3. The fixture quick-change device according to claim 2, characterized in that: The side bracket (3) is also provided with a guide wheel assembly (36) and a support wheel assembly (37). The guide wheel assembly (36) and the support wheel assembly (37) are mechanically mounted on at least one of the two sides of the bottom of the side bracket (3) to achieve the support and guiding function of the clamp and facilitate the clamp to enter and exit the workstation.

4. The fixture quick-change device according to any one of claims 2-3, characterized in that: The side bracket (3) is also provided with at least one quick positioning unit (38), and the quick positioning unit (38) is mechanically mounted on the side bracket (3) for realizing quick pin-connection and fixation of the clamp.

5. The fixture quick-change device according to claim 4, characterized in that: The first clamping unit (32), the second clamping unit (35), the pneumatic and electrical quick-insertion unit (34), and the quick positioning unit (38) are provided with at least one of a driving cylinder and a driving motor.

6. The fixture quick-change device according to claim 5, characterized in that: The side bracket (3) is also provided with an identification unit (33), and the identification unit (33) is mechanically connected to the side bracket (3) for realizing identification of the type of the clamp.

7. The fixture quick-change device according to claim 6, characterized in that: It also comprises: at least one partition (4), wherein the partition (4) is mechanically connected to the main support (2) or the side support (3) to achieve isolation of multiple fixture workstations.

8. The fixture quick-change device according to claim 7, characterized in that: Also includes: A counterweight assembly (6), wherein the counterweight assembly (6) is mechanically connected to the side bracket (3) to achieve counterweighting of the clamp quick-change device.

9. The fixture quick-change device according to claim 1, characterized in that: The turntable (1) comprises: a base (11), a motor (12), and a transmission mechanism (13); the motor (12) is fixed on the base (11) and drives the turntable (1) to rotate via the transmission mechanism (13).

Images