Clamp quick-changing device for digital intelligent flexible production line

Abstract

The utility model relates to the technical field of digital intelligent flexible welding, in particular to a clamp quick-changing device for a digital intelligent flexible production line, which comprises a positioning mechanism and AGV (automatic guided vehicle) supports, a clamp to be replaced is placed on the corresponding AGV support, and an AGV drives the corresponding AGV support to the positioning mechanism according to an instruction; when a position sensor in the positioning mechanism senses that the AGV is in place, a positioning pin in the positioning mechanism and a telescopic air cylinder on a positioning surface extend out and lift an AGV support, and then the AGV support is connected with a trapezoidal limiting block to support and fix the AGV support. According to the utility model, the clamp can be quickly replaced, and the production efficiency is improved; the trapezoid limiting block can bear pressure borne by the telescopic air cylinder, the service life of the whole device is prolonged, and then the replacement cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of digital intelligent flexible welding, in particular to a fixture quick-change device for a digital intelligent flexible production line. Background Art

[0002] The construction of a digital intelligent flexible production line is a comprehensive system project that aims to meet the needs of modern manufacturing for highly flexible, digital and intelligent production. The traditional construction method of integrating various equipment and opening up process flows no longer meets the current production requirements. Therefore, the new production method needs to stand at a higher perspective, adopt a closed-loop management model and advanced information technology, and coordinate the planning of warehousing, logistics, handling, process, production and finished product transportation.

[0003] The fixture quick change device is an important part of the digital intelligent flexible production line. In the digital intelligent flexible production line, the fixture replacement speed directly affects the production efficiency. The traditional fixture replacement method requires manual operation, which is time-consuming and prone to errors. In addition, the traditional fixture is large in size and heavy in weight, which will exert great pressure on the support components used to support the traditional fixture and thus damage the support components. Therefore, the study of a fast, efficient and safe fixture replacement device is of great significance to improve production efficiency, increase the degree of automation of the production line, and reduce labor costs. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a fixture quick-change device for a digital intelligent flexible production line to realize intelligent, fast and accurate fixture replacement. The reasonable design of the limit block effectively avoids the components providing longitudinal displacement from being subjected to the pressure of the fixture for a long time, thereby increasing the service life of the device and reducing the replacement cost.

[0005] The utility model provides a fixture quick-change device for a digital intelligent flexible production line, which is characterized by comprising a positioning mechanism and an AGV bracket, the fixture to be replaced is placed on the AGV bracket, and the AGV trolley drives the AGV bracket to move to the positioning mechanism; wherein,

[0006] The positioning mechanism includes a positioning base plate, an electric control cabinet, two transverse positioning modules and two longitudinal positioning modules; the two longitudinal positioning modules are oppositely mounted at both ends of the positioning base plate to support the AGV bracket, and the two transverse positioning modules are respectively mounted on the corresponding longitudinal positioning modules to determine the support height of the two longitudinal positioning modules and bear the gravity of the fixture to be replaced; the electric control cabinet is mounted on the positioning base plate;

[0007] The AGV bracket includes a bracket platform and a reference module; the top surface of the bracket platform is used to receive and replace the fixture; the reference module is located on the bottom surface of the bracket platform, and the position of the reference module corresponds to the two longitudinal positioning modules.

[0008] Furthermore, each longitudinal positioning module includes a longitudinal telescopic cylinder, a positioning plate and a protective cover; wherein the protective cover is fixed on the positioning base plate, the number of longitudinal telescopic cylinders is not less than two, and the driving end of the longitudinal telescopic cylinder is fixed inside the protective cover; the number of positioning plates is consistent with the number of longitudinal telescopic cylinders, and positioning pins for fixing the AGV bracket are provided on the upper surface of not less than one positioning plate; the movable end of the longitudinal telescopic cylinder is fixedly connected to the lower surface of the positioning plate through the top of the protective cover, so that the longitudinal telescopic cylinder drives the positioning plate to move longitudinally.

[0009] Furthermore, a guide block for guiding the AGV trolley to move to the positioning base plate is provided at one end of the protective outer cover.

[0010] Furthermore, each lateral positioning module includes a lateral telescopic cylinder, a limit block connecting rod and a limit block; wherein the limit block is a stepped structure, and the number of limit blocks is consistent with the number of positioning disks, and the limit blocks are connected by a limit block connecting rod; the movable end of the longitudinal telescopic cylinder passes through the limit block so that the positioning disk is located above the limit block; the driving end of the lateral telescopic cylinder is installed on the protective outer cover, and the movable end of the lateral telescopic cylinder is connected to one of the limit blocks, so that the lateral telescopic cylinder drives the limit blocks to move laterally together through the limit block connecting rod.

[0011] Furthermore, through holes with different diameters and intersecting with each other are respectively provided at the steps of the limit block, and the diameter of the through hole in the limit block close to the protective cover is larger than the diameter of the through hole in the limit block close to the positioning plate.

[0012] Furthermore, the reference module includes a reference plane and a guide wheel; wherein the number of the reference planes is consistent with the number of the positioning plates; the reference planes are arranged on the bottom surface of the bracket platform corresponding to the positioning plates, and positioning holes corresponding to the positioning pins are arranged on at least one reference plane; the guide wheel is installed on one side of the reference plane to guide the positioning plate close to the reference plane.

[0013] Furthermore, a trolley position slot for determining the AGV trolley is provided on the bottom surface of the support platform.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] 1) The electric control cabinet of the positioning mechanism can realize the precise positioning of the AGV bracket, the flexible movement of the AGV trolley, and the rapid replacement of the fixture, greatly improving the automation level of the production line;

[0016] 2) The positioning surface set on the longitudinal cylinder control positioning mechanism is aligned with the reference surface set on the AGV bracket, which effectively improves the accuracy of the alignment between the positioning mechanism and the AGV bracket and reduces the error rate;

[0017] 3) The limit block on the positioning mechanism is set as a trapezoidal ring structure. While cooperating with the horizontal cylinder to complete the position confirmation, the limit block effectively supports the positioning surface to receive the fixture, avoiding the damage of the longitudinal cylinder due to direct exposure to the gravity of the fixture for a long time, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall structural diagram of a fixture quick-changing device for a digital intelligent flexible production line provided according to an embodiment of the utility model;

[0019] Figure 2 It is an overall structural diagram of the positioning mechanism provided according to an embodiment of the utility model;

[0020] Figure 3 It is a top view of the positioning mechanism provided according to an embodiment of the utility model;

[0021] Figure 4 It is a combined structural diagram of a lateral positioning module and a longitudinal positioning module provided according to an embodiment of the utility model;

[0022] Figure 5 is a structural diagram of a lateral positioning module provided according to an embodiment of the utility model;

[0023] Figure 6 It is a bottom structural diagram of an AGV bracket provided according to an embodiment of the utility model.

[0024] Figure markings: positioning mechanism 1, positioning base plate 1-1, electric control cabinet 1-2, longitudinal positioning module 1-3, longitudinal telescopic cylinder 1-3-1, positioning plate 1-3-2, protective cover 1-3-3, positioning pin 1-3-4, guide block 1-3-5, transverse positioning module 1-4, limit block 1-4-1, limit block connecting rod 1-4-2, transverse telescopic cylinder 1-4-3, first sensor 1-5, AGV bracket 2, bracket platform 2-1, reference module 2-2, reference plane 2-2-1, guide wheel 2-2-2, positioning hole 2-2-3, second sensor 2-3, trolley position slot 2-4, fixture to be replaced 3. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and do not constitute a limitation of the utility model.

[0026] The fixture quick-change device for a digital intelligent flexible production line provided by the utility model cooperates with a sensor to realize intelligent, fast and accurate fixture replacement. The reasonable design of the limit block effectively avoids the components providing longitudinal displacement from being subjected to the pressure of the fixture for a long time, thereby increasing the service life of the device and reducing the replacement cost.

[0027] Figure 1 The overall structure of a fixture quick-change device for a digital intelligent flexible production line provided according to an embodiment of the utility model is shown.

[0028] like Figure 1 As shown, the fixture quick-changing device for a digital intelligent flexible production line provided by an embodiment of the utility model includes a positioning mechanism 1 and an AGV bracket 2. The fixture 3 to be replaced is placed on the AGV bracket 2, and the AGV trolley drives the AGV bracket 2 to move to the positioning mechanism 1.

[0029] In the embodiment of the utility model, the AGV car is a 3-ton heavy-duty 3TON CAP car.

[0030] Figure 2 and Figure 3 The overall structure and top view structure of the positioning mechanism provided according to the embodiment of the utility model are respectively shown.

[0031] like Figure 2 and Figure 3 As shown, the positioning mechanism 1 includes a positioning base plate 1-1, an electric control cabinet 1-2, two longitudinal positioning modules 1-3 and two transverse positioning modules 1-4. The electric control cabinet 1-2 is installed on the positioning base plate 1-1, and is used to receive information from the first sensor 1-5 in the positioning mechanism 1 and the second sensor 2-3 on the AGV bracket 2, and to control the two longitudinal positioning modules 1-3, the two transverse positioning modules 1-4 and the AGV trolley. The two longitudinal positioning modules 1-3 are installed oppositely at both ends of the positioning base plate 1-1 to support the AGV bracket 2, and the two transverse positioning modules 1-4 are respectively installed on the corresponding longitudinal positioning modules 1-3 to determine the support height of the two longitudinal positioning modules 1-3 and to bear the gravity of the fixture 3 to be replaced.

[0032] In the embodiment of the utility model, the electric control cabinet 1-2 adopts ET200SP, the first sensor 1-5 adopts LSE-Q31-LU, the second sensor 2-3 adopts LSE-Q31-V, and the electric control cabinet 1-2 and the first sensor 1-5 and the second sensor 2-3 are connected by ProfiNET bus to realize two-way communication. Preferably, the first sensor 1-5 is installed on the positioning base plate 1-1, and a slope is provided at one end of the positioning base plate 1-1, so that the AGV trolley can be easily moved to the interior of the positioning mechanism 1.

[0033] Figure 4The combined structure of the lateral positioning module and the longitudinal positioning module provided according to the embodiment of the utility model is shown.

[0034] like Figure 4 As shown, each longitudinal positioning module 1-3 includes a longitudinal telescopic cylinder 1-3-1, a positioning plate 1-3-2 and a protective cover 1-3-3. Among them, the protective cover 1-3-3 is fixed on the positioning base plate 1-1, the number of longitudinal telescopic cylinders 1-3-1 is not less than two, and the driving end of the longitudinal telescopic cylinder 1-3-1 is fixed inside the protective cover 1-3-3. The number of positioning plates 1-3-2 is consistent with the number of longitudinal telescopic cylinders 1-3-1, and a positioning pin 1-3-4 for fixing the AGV bracket 2 is provided on the upper surface of at least one positioning plate 1-3-2. The movable end of the longitudinal telescopic cylinder 1-3-1 is fixedly connected to the lower surface of the positioning plate 1-3-2 through the top of the protective cover 1-3-3, so that the longitudinal telescopic cylinder 1-3-1 drives the positioning plate 1-3-2 to move longitudinally. Preferably, a guide block 1-3-5 for guiding the AGV trolley to move to the positioning base plate 1 is provided at one end of the protective cover 1-3-3.

[0035] In the embodiment of the utility model, the longitudinal telescopic cylinder 1-3-1 adopts the AirTac 60 cylinder, and the number of the longitudinal telescopic cylinder 1-3-1 and the positioning disk 1-3-2 in each longitudinal positioning module 1-3 is 2, that is, the number of the longitudinal telescopic cylinder 1-3-1 and the positioning disk 1-3-2 is 4. A positioning pin 1-3-4 is provided on the upper surface of one of the positioning disks 1-3-2 in each of the two longitudinal positioning modules 1-3. Preferably, one of the positioning pins 1-3-4 is set as the main positioning pin, and the other positioning pin 1-3-4 is the auxiliary positioning pin. The main positioning pin and the auxiliary positioning pin are set along the diagonal direction of the positioning base plate 1-1.

[0036] Figure 5 The structure of the lateral positioning module provided according to the embodiment of the utility model is shown.

[0037] like Figure 4 and Figure 5 As shown, each lateral positioning module 1-4 includes a limit block 1-4-1, a limit block connecting rod 1-4-2 and a lateral telescopic cylinder 1-4-3. In the embodiment of the utility model, the lateral telescopic cylinder 1-4-3 adopts the AirTac 60 cylinder.

[0038] The number of limit blocks 1-4-1 is consistent with the number of positioning disks 1-3-2, and the limit blocks 1-4-1 are connected by limit block connecting rods 1-4-2. The movable end of the longitudinal telescopic cylinder 1-3-1 passes through the limit block 1-4-1, so that the positioning disk 1-3-2 is located above the limit block 1-4-1, and the driving end of the transverse telescopic cylinder 1-4-3 is installed on the protective cover 1-3-3. The movable end of the transverse telescopic cylinder 1-4-3 is connected to one of the limit blocks 1-4-1, so that the transverse telescopic cylinder 1-4-3 drives the limit block 1-4-1 through the limit block connecting rod 1-4-2 to move horizontally together.

[0039] like Figure 5 As shown, the limit block 1-4-1 is a stepped structure. In the embodiment of the utility model, the limit block 1-4-1 is a two-stage stepped structure. The step in the limit block 1-4-1 close to the protective cover 1-3-3 is identified as the first step, and a through hole is opened in the first step. When the longitudinal telescopic cylinder 1-3-1 is not working, the positioning plate 1-3-2 is placed on the first step; the step in the limit block 1-4-1 close to the positioning plate 1-3-2 is identified as the second step, and a through hole with a diameter smaller than that of the first step is opened at the second step. When the longitudinal telescopic cylinder 1-3-1 is working, the positioning plate 1-3-2 is supported on the second step.

[0040] Figure 6 The bottom structure of the AGV bracket provided according to the embodiment of the utility model is shown.

[0041] like Figure 6 As shown, the AGV bracket 2 provided by the embodiment of the utility model includes a bracket platform 2-1 and a reference module 2-2. The top surface of the bracket platform 2-1 is used to receive the front replacement fixture 3, and the reference module 2-2 is located on the bottom surface of the bracket platform 2-1, and the position of the reference module 2-1 corresponds to the two longitudinal positioning modules 1-3. Preferably, a trolley position slot 2-4 for determining the AGV trolley is provided on the bottom surface of the bracket platform 2-1.

[0042] The reference module 2-2 includes a reference surface 2-2-1 and a guide wheel 2-2-2. The number of reference surfaces 2-2-1 is consistent with the number of positioning disks 1-3-2, and the corresponding positioning disks 1-3-2 are arranged on the bottom surface of the support platform 2-1, and positioning holes 2-2-3 corresponding to the positioning pins 1-3-4 are arranged on at least one reference surface 2-2-1. The guide wheel 2-2-2 is installed on one side of the reference surface 2-2-1 to guide the positioning disk 1-3-2 to approach the reference surface 2-2-1.

[0043] In the embodiment of the utility model, the number of reference surfaces 2-2-1 is consistent with the number of positioning plates 1-3-2, which is 4, and corresponding to the positioning plates 1-3-2, main positioning holes and auxiliary positioning holes are respectively arranged along the diagonal direction of the bracket platform 2-1, the main positioning holes correspond to the main positioning pins, and the auxiliary positioning holes correspond to the auxiliary positioning pins.

[0044] The operation process of the fixture quick change device for a digital intelligent flexible production line provided in the embodiment of the utility model is as follows:

[0045] After receiving external information, the AGV trolley moves to the bottom of the AGV bracket 2 and gets stuck in the trolley position slot 2-4. When the second sensor 2-3 senses that the AGV trolley is in place, the AGV trolley drives the AGV bracket 2 and the fixture 3 to be replaced on the AGV bracket 2 to move toward the positioning mechanism 1.

[0046] When the first sensor 1-5 senses that the AGV trolley has reached the positioning base plate 1-1, the electric control cabinet 1-2 controls the longitudinal positioning module 1-3 to extend the positioning plate 1-3-2, and with the cooperation of the guide wheel 2-2-2, the positioning plate 1-3-2 is connected to the reference surface 2-2-1, and the primary and secondary positioning pins are respectively inserted into the primary and secondary positioning holes to achieve a fixed connection between the AGV bracket 2 and the positioning mechanism 1. The transverse telescopic cylinder 1-4-3 drives the second step of the limit block 1-4-1 to support the positioning plate 1-3-2 through the limit block connecting rod 1-4-2. At this time, the longitudinal telescopic cylinder 1-3-1 is no longer stressed, and the limit block 1-4-1 fully bears the gravity of the fixture 3 to be replaced. When the AGV bracket 2 is fixed on the positioning mechanism 1, the electric control cabinet 1-2 sends a completion command to the AGV trolley, and the trolley exits the positioning mechanism 1.

[0047] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fixture quick-change device for a digital intelligent flexible production line, characterized in that: It includes a positioning mechanism and an AGV bracket, the fixture to be replaced is placed on the AGV bracket, and the AGV trolley drives the AGV bracket to move to the positioning mechanism; wherein, The positioning mechanism includes a positioning base plate, an electric control cabinet, two transverse positioning modules and two longitudinal positioning modules; the two longitudinal positioning modules are oppositely mounted at both ends of the positioning base plate to support the AGV bracket, and the two transverse positioning modules are respectively mounted on the corresponding longitudinal positioning modules to determine the support height of the two longitudinal positioning modules and bear the gravity of the fixture to be replaced; the electric control cabinet is mounted on the positioning base plate; The AGV bracket includes a bracket platform and a reference module; the top surface of the bracket platform receives the fixture to be replaced; the reference module is located on the bottom surface of the bracket platform, and the position of the reference module corresponds to two longitudinal positioning modules.

2. The fixture quick-change device for a digital intelligent flexible production line according to claim 1 is characterized in that: Each longitudinal positioning module includes a longitudinal telescopic cylinder, a positioning plate and a protective cover; wherein the protective cover is fixed to the positioning base plate, the number of the longitudinal telescopic cylinders is not less than two, and the driving end of the longitudinal telescopic cylinder is fixed inside the protective cover; the number of the positioning plates is consistent with the number of the longitudinal telescopic cylinders, and a positioning pin for fixing the AGV bracket is provided on the upper surface of not less than one positioning plate; the movable end of the longitudinal telescopic cylinder is fixedly connected to the lower surface of the positioning plate through the top of the protective cover, so that the longitudinal telescopic cylinder drives the positioning plate to move longitudinally.

3. The fixture quick-change device for a digital intelligent flexible production line according to claim 2 is characterized in that: A guide block for guiding the AGV trolley to move onto the positioning base plate is arranged at one end of the protective outer cover.

4. The fixture quick-change device for a digital intelligent flexible production line according to claim 2 is characterized in that: Each transverse positioning module includes a transverse telescopic cylinder, a limit block connecting rod and a limit block; wherein the limit block is a stepped structure, and the number of the limit blocks is consistent with the number of the positioning plates, and the limit blocks are connected by the limit block connecting rod; the movable end of the longitudinal telescopic cylinder passes through the limit block, so that the positioning plate is located above the limit block; the driving end of the transverse telescopic cylinder is installed on the protective cover, and the movable end of the transverse telescopic cylinder is connected to one of the limit blocks, so that the transverse telescopic cylinder drives the limit blocks to move laterally together through the limit block connecting rod.

5. The fixture quick-change device for a digital intelligent flexible production line according to claim 4 is characterized in that: Through holes with different diameters and intersecting with each other are respectively provided at the steps of the limit block, and the diameter of the through hole in the limit block close to the protective cover is larger than the diameter of the through hole in the limit block close to the positioning plate.

6. The fixture quick-change device for a digital intelligent flexible production line according to claim 2 is characterized in that: The reference module includes a reference surface and a guide wheel; wherein the number of the reference surfaces is consistent with the number of the positioning plates; the reference surfaces are arranged on the bottom surface of the bracket platform corresponding to the positioning plates, and positioning holes corresponding to the positioning pins are arranged on at least one reference surface; the guide wheel is installed on one side of the reference surface to guide the positioning plate to approach the reference surface.

7. The fixture quick-change device for a digital intelligent flexible production line according to claim 1 is characterized in that: The bottom surface of the support platform is provided with a trolley position slot for determining the AGV trolley.

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