Numerically-controlled multi-station fragile product automatic chuck

Abstract

The utility model relates to the technical field of clamps, in particular to a digitally-controlled multi-station fragile product automatic chuck. Comprising a mounting plate, a guide rail assembly and a driving unit are mounted on the mounting plate, two moving seats moving relatively are mounted on the guide rail assembly, the driving unit is used for driving the two moving seats to move relatively along the guide rail assembly, clamping jaws matched with each other are mounted on the two moving seats, and each moving seat comprises a connecting plate, a driving block and a limiting plate; the clamping jaws are connected with the connecting plate, a displacement hole penetrating through the two sides is formed in the connecting plate in the sliding direction of the guide rail assembly, a displacement rod is arranged in the displacement hole in a sliding mode, and the two ends of the displacement rod penetrate out of the two ends of the displacement hole respectively and are connected with the driving block and the limiting plate respectively. The problems that in the prior art, due to the fact that the size deviation of a glass workpiece is large and the glass workpiece is fragile, a conventional chuck is prone to damage the glass workpiece in the clamping process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a numerically controlled multi-station automatic chuck for fragile articles. Background Art

[0002] In the production process of some fragile articles, such as on the production lines of glass products or relatively thin stamped metal parts. It is often necessary to use jigs to sort these fragile workpieces or transfer them from one production line to another. During the transfer process, it is necessary to use a jig to clamp the workpiece.

[0003] In the prior art, most jigs use bilateral clamping and fixation. When clamping a workpiece, the two clamping claws on both sides are used to squeeze the two sides of the workpiece, and pressure is generated on the workpiece by the two clamping claws to fix the workpiece and prevent the workpiece from falling off the jig during the transfer process. In the prior art, in order to ensure that the clamping claws can accurately clamp and fix the workpiece during the clamping process, the displacement stroke of the clamping claws is usually set, and the workpiece is grasped by controlling the distance when the clamping claws open and close. Although such an operation method can meet the grasping of the workpiece, for workpieces such as glass, during its processing, during the cooling process of the glass, the glass will undergo a certain degree of deformation, resulting in different deviations in the size of each glass workpiece. This makes it difficult for the fixed stroke of the clamping claws to meet the grasping and moving requirements of the glass workpiece, and it is easy to cause the glass workpiece to be clamped and burst or the glass workpiece to fall from the two clamping claws during the grasping process. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a numerically controlled multi-station automatic chuck for fragile articles, so as to solve the problem in the prior art that due to the large size deviation and fragile characteristics of the glass workpiece itself, the conventional chuck is easy to damage it during the clamping process.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The swing arm is connected to the swing arm by a spring, and the swing arm is connected to the swing arm by a spring. The swing arm is connected to the swing arm by a hook portion.

[0007] A further technical solution is that a first mounting hole and a second mounting hole are respectively provided on the opposite sides of the connecting plate and the limiting plate, and the two ends of the spring are respectively provided in the first mounting hole and the second mounting hole; a mounting block is provided on the limiting plate, and a third mounting hole is provided on the side of the mounting block facing the connecting plate, which passes through both sides, the displacement sensor is installed in the third mounting hole, and a detection plate aligned with the displacement sensor is provided on the connecting plate.

[0008] A further technical solution is that the guide rail assembly includes a guide bar, a threaded rod and two end plates, the two end plates are respectively installed on opposite sides of the mounting plate, the two ends of the threaded rod are respectively rotatably connected to the two end plates, the guide bar is connected to the mounting plate between the two end plates, and the guide bar and the threaded rod are arranged in parallel; a first driving wheel is sleeved on the middle part of the threaded rod, and a first thread segment and a second thread segment with opposite thread directions are respectively provided on both sides of the first driving wheel; the driving blocks of the two moving seats are respectively provided with a first threaded hole and a second threaded hole passing through both sides, the first threaded hole and the second threaded hole are respectively threadedly connected to the first thread segment and the second thread segment, and the driving blocks and connecting plates of the two moving seats are provided with guide rail grooves matching the guide bar; the driving unit is used to drive the first driving wheel to rotate.

[0009] A further technical solution is that the drive unit includes a servo motor and a second drive wheel, the servo motor is mounted on the mounting plate, the second drive wheel is mounted on the output shaft of the servo motor, and the second drive wheel is connected to the first drive wheel by transmission.

[0010] A further technical solution is that the drive unit also includes a protective cover and a third drive wheel. The protective cover is installed on the mounting plate at the position of the first drive wheel. The second drive wheel and the third drive wheel are both rotatably set in the protective cover. The output shaft of the servo motor passes through the protective cover and is connected to the second drive wheel. The second drive wheel, the third drive wheel and the first drive wheel are connected in sequence by transmission.

[0011] A further technical solution is that limiting baffles are sleeved on both sides of the threaded rod.

[0012] A further technical solution is that sliders are arranged on both the driving block and the connecting plate, guide rail grooves are arranged on the sliders, and the guide rail grooves are slidably connected to the guide rail strips; a connecting seat for connecting a robotic arm is arranged on the mounting plate.

[0013] A control box is installed on the mounting plate, and a control module is arranged inside the control box; the servo motor and the displacement sensor are both communicatively connected to the control module.

[0014] A further technical solution is that a first buffer layer is arranged on the opposite side of each of the two clamping claws, and a second buffer layer is arranged on the surface of the claw block.

[0015] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By arranging the spring and the displacement sensor, when clamping a workpiece, the spring can be used as a buffer component between the driving block and the connecting plate, so as to avoid damage to the workpiece caused by the continuous movement of the driving block after the clamping claw fits the workpiece. At the same time, the displacement sensor is used to detect the distance between the limiting plate and the connecting plate. When the change in the distance exceeds the set value, the control driving unit stops to avoid the driving unit continuing to drive the driving block to move; 2. By arranging the guide rail assembly and the two moving seats, the distance between the two clamping claws can be controlled by means of the movement of the two moving seats on the guide rail assembly, so as to cooperate with fixing the left and right sides of the workpiece. Description of the Drawings

[0016] Figure 1 It is an overall schematic diagram of an automatically clamping chuck for multi-station fragile products with digital control according to the utility model.

[0017] Figure 2 It is a partial schematic diagram of an automatically clamping chuck for multi-station fragile products with digital control according to the utility model.

[0018] Figure 3 is Figure 2 a partially enlarged schematic diagram at the marked position A in

[0019] Figure 4 It is another overall schematic diagram of an automatically clamping chuck for multi-station fragile products with digital control according to the utility model.

[0020] Figure 5 It is a schematic diagram of the guide rail assembly and the moving seats of an automatically clamping chuck for multi-station fragile products with digital control according to the utility model.

[0021] Figure 6 It is a partial schematic diagram of the guide rail assembly and the moving seats of an automatically clamping chuck for multi-station fragile products with digital control according to the utility model.

[0022] Figure 7 Schematic diagram of the moving seat of an automatically clamping chuck for fragile articles with multi-stations under digital control according to the present utility model.

[0023] Icon: 1 - mounting plate, 2 - moving seat, 3 - clamping jaw, 4 - jaw block, 6 - guide rail bar, 7 - threaded rod, 8 - end plate, 9 - first driving wheel, 10 - first threaded section, 11 - second threaded section, 12 - first threaded hole, 13 - guide rail groove, 14 - servo motor, 15 - second driving wheel, 16 - protective cover, 17 - third driving wheel, 18 - limit baffle, 19 - connecting plate, 20 - slider, 21 - driving block, 22 - connecting seat, 23 - control box, 24 - limit plate, 25 - displacement hole, 26 - displacement rod, 27 - spring, 28 - displacement sensor, 29 - first mounting hole, 30 - mounting block, 31 - third mounting hole, 32 - detection plate. Detailed implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] Figures 1 to 7 The following shows an embodiment of the present utility model.

[0026] Embodiment 1:

[0027] An automatically clamping chuck for fragile articles with multi-stations under digital control includes a mounting plate 1. A guide rail assembly and a driving unit are mounted on the mounting plate 1. Two relatively moving moving seats 2 are mounted on the guide rail assembly. The driving unit is used to drive the two moving seats 2 to move relatively along the guide rail assembly. Mutually cooperating clamping jaws 3 are mounted on both of the two moving seats 2. The moving seat 2 includes a connecting plate 19, a driving block 21 and a limit plate 24. The clamping jaw 3 is connected to the connecting plate 19. A displacement hole 25 penetrating both sides is provided in the connecting plate 19 along the sliding direction of the guide rail assembly. A displacement rod 26 is slidably arranged in the displacement hole 25. Two ends of the displacement rod 26 respectively penetrate through two ends of the displacement hole 25 and are respectively connected to the driving block 21 and the limit plate 24. Both the driving block 21 and the connecting plate 19 are slidably connected to the guide rail assembly, and the driving unit is used to drive the driving block 21 to slide along the guide rail assembly. A spring 27 and a displacement sensor 28 are arranged between the connecting plate 19 and the limit plate 24. Jaw blocks 4 are arranged on the opposite sides of both of the two clamping jaws 3.

[0028] On the opposite sides of the connecting plate 19 and the limiting plate 24, a first mounting hole 29 and a second mounting hole are respectively provided. The two ends of the spring 27 are respectively arranged in the first mounting hole 29 and the second mounting hole. An installation block 30 is provided on the limiting plate 24. A third mounting hole 31 penetrating both sides is provided on the side of the installation block 30 facing the connecting plate 19. The displacement sensor 28 is installed in the third mounting hole 31, and a detection plate 32 aligned with the displacement sensor 28 is provided on the connecting plate 19. By providing the first mounting hole 29 and the second mounting hole, it is convenient to fix the spring 27, so that the spring 27 will not shift during compression. By providing the installation block 30 and the third mounting hole 31, it is convenient to fix the displacement sensor 28. At the same time, the detection plate 32 can be used as the detection point of the displacement sensor 28. The distance between the displacement sensor 28 and the detection plate 32 is detected by the displacement sensor 28, so as to facilitate the control of the stop of the drive unit. The displacement sensor 28 can be of any type in the prior art.

[0029] The guide rail assembly includes a guide rail bar 6, a threaded rod 7 and two end plates 8. The two end plates 8 are respectively installed on the opposite sides of the mounting plate 1. The two ends of the threaded rod 7 are respectively rotatably connected to the two end plates 8. The guide rail bar 6 is connected to the mounting plate 1 between the two end plates 8, and the guide rail bar 6 is arranged parallel to the threaded rod 7. A first driving wheel 9 is sleeved on the middle of the threaded rod 7. On both sides of the first driving wheel 9, the threaded rod 7 is respectively provided with a first threaded section 10 and a second threaded section 11 with opposite thread directions. The driving blocks 21 of the two moving seats 2 are respectively provided with a first threaded hole 12 and a second threaded hole penetrating both sides. The first threaded hole 12 and the second threaded hole are respectively threadedly matched and connected to the first threaded section 10 and the second threaded section 11. Guide rail grooves 13 matching the guide rail bar 6 are provided on the driving blocks 21 of the two moving seats 2 and the connecting plate 19. The drive unit is used to drive the first driving wheel 9 to rotate. When using the automatic chuck, by controlling the drive unit to drive the first driving wheel 9 to rotate, the threaded rod 7 is driven to rotate. When the threaded rod 7 rotates, the moving seat 2 can move along the guide rail bar 6 by means of the guide rail groove 13. Since the thread directions of the first threaded section 10 and the second threaded section 11 are opposite, when the threaded rod 7 rotates, the two moving seats 2 can approach or move away from each other, so as to clamp and release the workpiece.

[0030] The drive unit includes a servo motor 14 and a second driving wheel 15. The servo motor 14 is installed on the mounting plate 1, the second driving wheel 15 is installed on the output shaft of the servo motor 14, and the second driving wheel 15 is in transmission connection with the first driving wheel 9. By providing the servo motor 14, the rotation accuracy of the servo motor 14 can be utilized to well control the distance between the two clamping claws 3, so as to avoid damaging the workpiece due to excessive clamping force.

[0031] The drive unit also includes a protective cover 16 and a third drive wheel 17. The protective cover 16 is mounted on the mounting plate 1 in the position of the first drive wheel 9. The second drive wheel 15 and the third drive wheel 17 are both rotatably mounted within the protective cover 16. The output shaft of the servo motor 14 extends through the protective cover 16 and is connected to the second drive wheel 15. The second drive wheel 15, the third drive wheel 17, and the first drive wheel 9 are sequentially connected by transmission. The provision of the protective cover 16 effectively prevents the first, second, and third drive wheels 9, 15, and 17 from being exposed to the outside. The first, second, and third drive wheels 9, 15, 17 can be driven by intermeshing gears. The provision of the third drive wheel 17 allows it to serve as an intermediate transmission wheel between the first and second drive wheels 9, 15, filling the gap between them. Furthermore, the third drive wheel 17 can drive the first drive wheel 9 even when the diameter of the second drive wheel 15 is smaller.

[0032] Embodiment 2:

[0033] Based on the above embodiment, the threaded rod 7 is provided with a limit plate 18 on both sides of the first drive wheel 9. The limit plates 18 can control the minimum clamping distance between the two clamping claws 3, preventing the movable base 2 from colliding with the first drive wheel 9 during movement and causing damage to the first drive wheel 9.

[0034] The driving block 21 and the connecting plate 19 are both provided with a slider 20 , and the slider is provided with a guide rail groove 13 , which is slidably connected to the guide rail bar 6 ; the mounting plate 1 is provided with a connecting seat 22 for connecting the robotic arm.

[0035] A control box 23 is mounted on the mounting plate 1 , and a control module is provided in the control box 23 ; the servo motor 14 and the displacement sensor 28 are both communicatively connected to the control module.

[0036] There are several guide bars 6 and sliders 20. By cooperating with multiple sliders 20 and multiple guide bars 6, the stability of the movement of the connecting plate 19 and the driving block 21, as well as the stability of the entire moving seat 2, can be improved. When clamping and putting down, the two clamping claws 3 can remain stable and avoid shaking.

[0037] By providing the connecting seat 22, the entire automatic adding tray can be easily installed on the robot arm for use.

[0038] In conjunction with a robotic arm, digital control of the entire automated tray loading process is achieved, moving workpieces from one station to another on the automated production line. The entire process can be controlled by a pre-set program or by integrating peripheral vision sensors for auxiliary control.

[0039] On the relative side of each of the two clamping claws 3, a first buffer layer is provided, and a second buffer layer is provided on the surface of the claw block 4. By providing the first buffer layer and the second buffer layer, a certain buffer protection effect can be achieved during the clamping process. A rubber layer with a relatively thin thickness can be used, which will not affect the clamping accuracy.

[0040] Although the present invention has been described herein with reference to various illustrative embodiments of the present invention, it should be understood that those skilled in the art can devise many other modifications and embodiments that will fall within the scope of the principles and spirit of the present application. More specifically, within the scope of the present application disclosure, the drawings, and the claims, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be apparent to those skilled in the art.

Claims

1. A digitally controlled multi-station automatic chuck for fragile items, comprising a mounting plate (1), on which a guide rail assembly and a driving unit are mounted, two relatively movable moving seats (2) are mounted on the guide rail assembly, the driving unit is used to drive the two moving seats (2) to move relatively along the guide rail assembly, and clamping claws (3) which cooperate with each other are mounted on both of the two moving seats (2), characterized in that, The movable seat (2) comprises a connecting plate (19), a driving block (21) and a limiting plate (24); the clamping claw (3) is connected to the connecting plate (19); the connecting plate (19) is provided with displacement holes (25) passing through both sides along the sliding direction of the guide rail assembly; a displacement rod (26) is slidably provided in the displacement hole (25); the two ends of the displacement rod (26) respectively pass through the two ends of the displacement hole (25) and are respectively connected to the driving block (21) and the limiting plate (24); the driving block (21) and the connecting plate (19) are both slidably connected to the guide rail assembly, and the driving unit is used to drive the driving block (21) to slide along the guide rail assembly; a spring (27) and a displacement sensor (28) are provided between the connecting plate (19) and the limiting plate (24).

2. The automatic chuck for fragile articles with multiple working positions controlled numerically according to claim 1, wherein: A first mounting hole (29) and a second mounting hole are respectively provided on opposite sides of the connecting plate (19) and the limiting plate (24), and two ends of the spring (27) are respectively provided in the first mounting hole (29) and the second mounting hole; a mounting block (30) is provided on the limiting plate (24), and a third mounting hole (31) passing through both sides is provided on the side of the mounting block (30) facing the connecting plate (19); the displacement sensor (28) is installed in the third mounting hole (31), and a detection plate (32) matching the displacement sensor (28) is provided on the connecting plate (19).

3. A digitally controlled multi-station automatic chuck for fragile articles according to claim 1, characterized in that: The guide rail assembly comprises a guide rail bar (6), a threaded rod (7) and two end plates (8), the two end plates (8) are respectively mounted on opposite sides of the mounting plate (1), the two ends of the threaded rod (7) are respectively rotatably connected to the two end plates (8), the guide rail bar (6) is connected to the mounting plate (1) between the two end plates (8), and the guide rail bar (6) and the threaded rod (7) are arranged in parallel; The middle part of the threaded rod (7) is sleeved with a first driving wheel (9), and the threaded rod (7) is provided with a first thread segment (10) and a second thread segment (11) with opposite thread directions on both sides of the first driving wheel (9), and the driving blocks (21) of the two movable seats (2) are respectively provided with a first threaded hole (12) and a second threaded hole that pass through both sides, and the first threaded hole (12) and the second threaded hole are respectively connected to the first thread segment (10) and the second thread segment (11) by thread matching, and the driving blocks (21) of the two movable seats (2) and the connecting plate (19) are both provided with a guide rail groove (13) that matches the guide rail bar (6); the driving unit is used to drive the first driving wheel (9) to rotate.

4. A digitally controlled multi-station automatic chuck for fragile articles according to claim 3, characterized in that: The driving unit comprises a servo motor (14) and a second driving wheel (15), wherein the servo motor (14) is mounted on the mounting plate (1), and the second driving wheel (15) is mounted on the output shaft of the servo motor (14), and the second driving wheel (15) is connected to the first driving wheel (9) by transmission.

5. A digitally controlled multi-station automatic chuck for fragile articles according to claim 4, characterized in that: The drive unit further comprises a protective cover (16) and a third drive wheel (17). The protective cover (16) is mounted on the mounting plate (1) at the position of the first drive wheel (9). The second drive wheel (15) and the third drive wheel (17) are both rotatably arranged in the protective cover (16). The output shaft of the servo motor (14) passes through the protective cover (16) and is connected to the second drive wheel (15). The second drive wheel (15), the third drive wheel (17) and the first drive wheel (9) are sequentially connected in a transmission manner.

6. The automatic chuck for multi-station fragile products with digital control according to claim 4, wherein: The threaded rod (7) is sleeved with a limit baffle (18) on both sides of the first driving wheel (9).

7. A digitally controlled multi-station automatic chuck for fragile articles according to claim 6, characterized in that: The driving block (21) and the connecting plate (19) are both provided with a slider (20), the slider is both provided with the guide rail groove (13), and the guide rail groove (13) and the guide rail bar (6) are slidably connected; the mounting plate (1) is provided with a connecting seat (22) for connecting a robotic arm.

8. A digitally controlled multi-station automatic chuck for fragile articles according to claim 4, characterized in that: A control box (23) is mounted on the mounting plate (1), and a control module is provided in the control box (23); the servo motor (14) and the displacement sensor (28) are both communicatively connected to the control module.

9. A digitally controlled multi-station automatic chuck for fragile articles according to claim 1, characterized in that: A first buffer layer is provided on opposite sides of the two clamping claws (3).

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