Clamping jaw single-action adjusting device

Abstract

The utility model discloses a clamping jaw single-action adjusting device. The cylinder body comprises a first cavity and a second cavity which are relatively independent, the first cavity is connected with a first driving source, and the second cavity is connected with a second driving source. The first end of the first piston rod is located in the first cavity and can slide in the first direction under driving of the first driving source, the second end of the first piston rod extends out of the first cavity, and the first end of the second piston rod is located in the second cavity and can slide in the first direction under driving of the second driving source. The second end of the second piston rod extends out of the second cavity. The first clamping jaw is connected with the second end of the first piston rod, and the second clamping jaw is connected with the second end of the second piston rod. According to the clamping jaw single-action adjusting device, the application range of the clamping jaw is widened, the clamping jaw cost is reduced, and the complexity of a control structure is reduced.

Description

Technical Field

[0001] This application relates to the field of gripper technology, and in particular to a gripper adjustable by single action. Background Technology

[0002] In automated production lines, grippers are often used to grab or hold workpieces.

[0003] Most grippers, such as two-jaw, three-jaw, or four-jaw grippers, open and close simultaneously, making it impossible to achieve independent movement of a single jaw, which is not conducive to expanding the applicable scenarios of grippers. In special working conditions where each jaw of the gripper needs to move independently, the gripper can only be moved by combining two cylinders, which increases the gripping cost and the complexity of the control structure. Utility Model Content

[0004] The purpose of this application is to provide a gripper that can be adjusted independently, thereby increasing the applicability of the gripper, reducing the cost of the gripper, and reducing the complexity of the control structure.

[0005] This application provides a gripper adjustment device with single-action capability, comprising: a cylinder body, including a first cavity and a second cavity arranged relatively independently, the first cavity being connected to a first driving source, and the second cavity being connected to a second driving source; a first piston rod and a second piston rod, the first end of the first piston rod being located in the first cavity and slidably disposed along a first direction under the drive of the first driving source, the second end of the first piston rod extending out of the first cavity, the first end of the second piston rod being located in the second cavity and slidably disposed along a first direction under the drive of the second driving source, and the second end of the second piston rod extending out of the second cavity; a first gripper and a second gripper, the first gripper being connected to the second end of the first piston rod, and the second gripper being connected to the second end of the second piston rod.

[0006] Optionally, the cylinder body is equipped with a first limiting member and a second limiting member, the first gripper is equipped with a first positioning member, and the first limiting member is located on the sliding path of the first positioning member to limit the first gripper; the second gripper is equipped with a second positioning member, and the second limiting member is located on the sliding path of the second positioning member to limit the second gripper.

[0007] Optionally, the first limiting member is located on the return path of the first positioning member, and the second limiting member is located on the return path of the second positioning member.

[0008] Optionally, the first limiting member has a first threaded hole, and the second limiting member has a second threaded hole; a first adjusting rod is internally threaded into the first threaded hole, the first adjusting rod protruding from the first limiting member toward the first positioning member and adjustable along a first direction; a second adjusting rod is internally threaded into the second threaded hole, the second adjusting rod protruding from the second limiting member toward the second positioning member and adjustable along a first direction.

[0009] Optionally, the first gripper includes a first gripping plate and a first connecting plate that are bent and connected, and the second gripper includes a second gripping plate and a second connecting plate that are bent and connected; the first gripping plate is connected to the second end of the first piston rod, and the second gripping plate is connected to the second end of the second piston rod; the first connecting plate and the second connecting plate are both slidably connected to the cylinder body.

[0010] Optionally, a first guide rail and a second guide rail are sequentially mounted on the cylinder body along a first direction; a first sliding groove is provided on the first connecting plate, and the first sliding groove is slidably disposed on the first guide rail; a second sliding groove is provided on the second connecting plate, and the second sliding groove is slidably disposed on the second guide rail.

[0011] Optionally, the second guide rail has a first groove on both sides opposite to each other, and the second slide groove has a second groove on two opposite groove walls. The cavity defined by the groove openings of the first groove and the groove openings of the second groove is fitted with a guide rail ball.

[0012] Optionally, the first cavity is provided with a first air hole and a second air hole connected to the first driving source, and the second cavity is provided with a third air hole and a fourth air hole connected to the second driving source; the first end of the first piston rod is connected to a first piston, and the first piston slides between the first air hole and the second air hole; the second end of the second piston rod is connected to a second piston, and the second piston slides between the third air hole and the fourth air hole.

[0013] Optionally, there are two first cavities, each containing a first piston rod, and both first piston rods are connected to the first gripper plate; there are also two second cavities, each containing a second piston rod, and both second piston rods are connected to the second gripper plate.

[0014] Optionally, the second end of the first piston rod extends sealed from the end of the first end of the cylinder along the first direction, and the second end of the second piston rod extends sealed from the end of the second end of the cylinder along the first direction.

[0015] The above technical solution has the following beneficial effects:

[0016] The gripper adjustment device provided in this application, by setting up relatively independent first and second cavities, allows the first end of the first piston rod to be slidably disposed in the first cavity under the drive of the first drive source, and the first end of the second piston rod to be slidably disposed in the second cavity under the drive of the second drive source. By independently controlling the first and second piston rods through the first and second drive sources respectively, the first and second grippers can be independently controlled. Moreover, this application can achieve the effect of separately controlling the two grippers with a single cylinder, expanding the applicability of the gripper, reducing costs, and reducing the complexity of the control structure. Attached Figure Description

[0017] Figure 1 This is a gripper that can be adjusted independently in one embodiment of this application.

[0018] Figure 2 This is a top view of a gripper that can be adjusted independently in one embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of the gripper adjustable device with both sides open in one embodiment of this application.

[0020] Figure 4 for Figure 3 Cross-sectional view of AA.

[0021] Figure 5 for Figure 3 Cross-sectional view of BB.

[0022] Attached icon number

[0023] 1-Cylinder body, 10-First cavity, 100-First air hole, 101-Second air hole, 11-Second cavity, 110-Third air hole, 111-Fourth air hole, 12-First limiting member, 120-First adjusting rod, 13-Second limiting member, 130-Second adjusting rod, 14-Second guide rail, 15-Guide rail ball, 16-End cover.

[0024] 2-First piston rod, 20-First piston.

[0025] 3-Second piston rod.

[0026] 4-First gripper, 40-First positioning element, 41-First gripper plate, 42-First connecting plate.

[0027] 5-Second gripper, 50-Second positioning element, 51-Second gripper plate, 52-Second connecting plate, 520-Second sliding groove. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0029] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0030] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0031] like Figures 1 to 2 As shown, this application provides a gripper that can be adjusted by one action, including: a cylinder 1, a first piston rod 2 and a second piston rod 3, a first gripper 4 and a second gripper 5.

[0032] The first cavity 10 and the second cavity 11 are both located within the cylinder body 1 and arranged relatively independently. The first cavity 10 is connected to a first drive source, and the second cavity 11 is connected to a second drive source. The first end of the first piston rod 2 is located within the first cavity 10 and is slidable along a first direction under the drive of the first drive source. The second end of the first piston rod 2 extends outside the first cavity 10. The first end of the second piston rod 3 is located within the second cavity 11 and is slidable along a first direction under the drive of the second drive source. The second end of the second piston rod 3 extends outside the second cavity 11.

[0033] The first gripper 4 is connected to the second end of the first piston rod 2, and the second gripper 5 is connected to the second end of the second piston rod 3.

[0034] In this embodiment, the first direction can be the length direction of the cylinder 1, or the length direction of the first piston rod 2 and the second piston rod 3, and the first cavity 10 and the second cavity 11 can be arranged along the first direction.

[0035] Please refer to Figure 5 In this embodiment of the application, the opening of the first cavity 10 is located at one end of the cylinder body 1, and the opening is sealed and covered by an end cap 16. The end cap 16 has an opening, and the first piston rod 2 passes through the opening and is sealed with the opening by a sealing ring, etc.

[0036] The gripper adjustment device provided in this application embodiment, by setting relatively independent first cavity 10 and second cavity 11, allows the first end of the first piston rod 2 to be slidably disposed in the first cavity 10 under the drive of the first drive source, and the first end of the second piston rod 3 to be slidably disposed in the second cavity 11 under the drive of the second drive source. By independently controlling the first piston rod 2 and the second piston rod 3 through the first drive source and the second drive source respectively, the first gripper 4 and the second gripper 5 can be independently controlled. Moreover, this application can achieve the effect of separately controlling the two grippers with a single cylinder 1, which expands the applicability of the gripper, reduces costs, and reduces the complexity of the control structure.

[0037] As an optional embodiment, the cylinder body 1 is equipped with a first limiting member 12 and a second limiting member 13; the first gripper 4 is equipped with a first positioning member 40; the first limiting member 12 is located on the sliding path of the first positioning member 40 to limit the first gripper 4; the second gripper 5 is equipped with a second positioning member 50; the second limiting member 13 is located on the sliding path of the second positioning member 50 to limit the second gripper 5. Figures 1 to 3 ,as well as Figure 5 As shown, the first limiting member 12 can limit the first gripper 4, and the second limiting member 13 can limit the second gripper 5. It can limit the first gripper 4 and the second gripper 5 individually, and it can also limit the distance between the two grippers when the first gripper 4 and the second gripper 5 move together.

[0038] In an optional embodiment, the first limiting member 12 is located on the return path of the first positioning member 40, and the second limiting member 13 is located on the return path of the second positioning member 50. The first limiting member 12 can limit the return of the first gripper 4, and the second limiting member 13 can limit the return of the second gripper 5. It can limit the first gripper 4 and the second gripper 5 individually, and it can also limit the closing stroke of the two grippers when the first gripper 4 and the second gripper 5 move together.

[0039] In an optional embodiment, the first limiting member 12 has a first threaded hole, and the second limiting member 13 has a second threaded hole. A first adjusting rod 120 is threadedly connected to the first threaded hole. The first adjusting rod 120 protrudes from the first limiting member 12 toward the first positioning member 40 and is adjustable along a first direction. A second adjusting rod 130 is threadedly connected to the second threaded hole. The second adjusting rod 130 protrudes from the second limiting member 13 toward the second positioning member 50 and is adjustable along a first direction. The first adjusting rod 120 is used to contact the first positioning member 40 to limit the first gripper 4. The length of the first adjusting rod 120 protruding from the first limiting member 12 is adjusted by screwing the first adjusting rod 120 into or out of the first threaded hole, thereby adjusting the return stroke of the first gripper 4. Similarly, the second adjusting rod 130 is used to contact the second positioning member 50 to limit the second gripper 5. The length of the second adjusting rod 130 protruding from the second limiting member 13 is adjusted by screwing the second adjusting rod 130 into or out of the second threaded hole, thereby adjusting the return stroke of the second gripper 5.

[0040] In an optional embodiment of the first gripper 4 and the second gripper 5, the first gripper 4 includes a first gripping plate 41 and a first connecting plate 42 that are bent and connected, and the second gripper 5 includes a second gripping plate 51 and a second connecting plate 52 that are bent and connected; the first gripping plate 41 is connected to the second end of the first piston rod 2, and the second gripping plate 51 is connected to the second end of the second piston rod 3; both the first connecting plate 42 and the second connecting plate 52 are slidably connected to the cylinder body 1. Figure 2 and Figure 3 As shown, in this embodiment, the first gripper 4 and the second gripper 5 are L-shaped or approximately L-shaped to achieve functional refinement. The first gripping plate 41 and the second gripping plate 51 can increase the contact area with the workpiece through their end faces, thereby increasing the gripping or positioning effect. The first connecting plate 42 and the second connecting plate 52 are slidably connected to the cylinder 1 to accommodate the movement of the first gripping plate 41 and the second gripping plate 51.

[0041] As an optional embodiment, such as Figure 4 and Figure 5 As shown, a first guide rail and a second guide rail 14 are sequentially mounted on the cylinder body 1 along a first direction; a first sliding groove is formed on the first connecting plate 42, which is slidably disposed on the first guide rail to guide sliding and increase the sliding stability of the first gripping plate 41. A second sliding groove 520 is formed on the second connecting plate 52, which is slidably disposed on the second guide rail 14 to guide sliding and increase the sliding stability of the second gripping plate 51.

[0042] As an optional embodiment, the second guide rail 14 has first grooves on its opposite sides, and the second slide groove 520 has second grooves on its two opposite groove walls. A guide rail bead 15 is installed within the cavity defined by the openings of the first and second grooves. Please refer to... Figure 4 and Figure 5 The guide bead 15 can reduce the frictional force when the second guide rail 14 and the second slide groove 520 slide relative to each other. The guide bead 15 can be at least partially rotatably embedded in the second groove to achieve the relative positioning of the guide bead 15.

[0043] As an optional embodiment, the first cavity 10 has a first air port 100 and a second air port 101 connected to the first drive source, and the second cavity 11 has a third air port 110 and a fourth air port 111 connected to the second drive source. A first piston 20 is connected to the first end of the first piston rod 2, and the first piston 20 slides between the first air port 100 and the second air port 101 in a sealed manner. A second piston is connected to the second end of the second piston rod 3, and the second piston slides between the third air port 110 and the fourth air port 111 in a sealed manner. By controlling the air supply and release between the first drive source and the first air port 100 and the second air port 101 (air enters through one port, air exits through the other), the first piston 20 acts as a sealing gap, allowing the first piston rod 2 to move within the first cavity 10 under the pressure difference. Similarly, by controlling the air supply and exhaust between the second drive source and the third air port 110 and the fourth air port 111 (air enters through one air port and exits through the other air port), the second piston acts as a sealing gap, so that the second piston rod 3 can move within the second cavity 11 under the action of pressure difference.

[0044] Air is introduced through the first vent 100 and discharged through the second vent 101, thus closing the first gripper 4. Air is introduced through the second vent 101 and discharged through the first vent 100, thus opening the first gripper 4.

[0045] Air enters through the third vent 110 while air exits through the fourth vent 111, causing the second gripper 5 to close. Air enters through the fourth vent 111 while air exits through the third vent 110, causing the second gripper 5 to open.

[0046] Air is introduced through the first vent 100 and the third vent 110, while air is discharged through the second vent 101 and the fourth vent 111, thus achieving the simultaneous closure of the first gripper 4 and the second gripper 5.

[0047] Air enters through the second vent 101 and the fourth vent 111, while air is discharged through the first vent 100 and the third vent 110, thus enabling the first gripper 4 and the second gripper 5 to open simultaneously.

[0048] The different air pressures of the first and second drive sources allow the gripper with higher air pressure to be used for positioning, replacing the traditional pneumatic gripper for center positioning.

[0049] The first air port 100 and the second air port 101 are both connected to the first drive source via pipes, and the connection and closure of the pipes are controlled by solenoid valves on the pipes. The third air port 110 and the fourth air port 111 are both connected to the second drive source via pipes, and the connection and closure of the pipes are controlled by solenoid valves on the pipes. The air supply and exhaust control between the drive source and the two air ports on the cylinder block 1 is a conventional technical solution for cylinder products, and will not be described in detail in this application.

[0050] As an optional embodiment, there are two first cavities 10, each containing a first piston rod 2, and both first piston rods 2 are connected to the first gripping plate 41; there are also two second cavities 11, each containing a second piston rod 3, and both second piston rods 3 are connected to the second gripping plate 51. Figure 5 As shown, the two first piston rods 2 push the first gripper 4 to move, increasing the stability of the first gripper 4 under force, and the two second piston rods 3 push the second gripper 5 to move, increasing the stability of the second gripper 5 under force.

[0051] As an optional embodiment, the second end of the first piston rod 2 extends sealed out from the end of the cylinder 1 at the first end along the first direction, and the second end of the second piston rod 3 extends sealed out from the end of the cylinder 1 at the second end along the first direction. Figures 1 to 3 As shown, in this embodiment of the application, the first piston rod 2 and the second piston rod 3 extend in opposite directions from both ends of the cylinder body 1, which can achieve the effect of positioning two workpieces at both ends of the cylinder body 1 respectively.

[0052] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0053] The above are merely the principles and preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of this utility model, and these modifications should also be considered within the scope of protection of this utility model.

Claims

1. A gripper with a single-action adjustable mechanism, characterized in that, include: The cylinder block includes a first chamber and a second chamber that are relatively independently arranged. The first chamber is connected to a first drive source, and the second chamber is connected to a second drive source. A first piston rod and a second piston rod, wherein the first end of the first piston rod is located in the first cavity and is slidably disposed along a first direction under the drive of the first driving source, and the second end of the first piston rod extends out of the first cavity; the first end of the second piston rod is located in the second cavity and is slidably disposed along a first direction under the drive of the second driving source, and the second end of the second piston rod extends out of the second cavity. A first gripper and a second gripper, wherein the first gripper is connected to the second end of the first piston rod, and the second gripper is connected to the second end of the second piston rod.

2. The gripper adjustable device according to claim 1, characterized in that, The cylinder body is equipped with a first limiting member and a second limiting member; The first gripper is equipped with a first positioning element, and the first limiting element is located on the sliding path of the first positioning element to limit the first gripper. The second gripper is equipped with a second positioning element, and the second limiting element is located on the sliding path of the second positioning element to limit the second gripper.

3. The gripper adjustable device according to claim 2, characterized in that, The first limiting member is located on the return path of the first positioning member, and the second limiting member is located on the return path of the second positioning member.

4. The gripper adjustable device according to claim 2, characterized in that, The first limiting member has a first threaded hole, and the second limiting member has a second threaded hole; The first threaded hole is internally threaded with a first adjusting rod, which protrudes from the first limiting member toward the first positioning member and is adjustable along the first direction; The second threaded hole is internally threaded with a second adjusting rod, which protrudes from the second limiting member toward the second positioning member and is adjustable along the first direction.

5. The gripper adjustable device according to claim 1, characterized in that, The first gripper includes a first gripping plate and a first connecting plate that are bent and connected; the second gripper includes a second gripping plate and a second connecting plate that are bent and connected. The first gripper plate is connected to the second end of the first piston rod, and the second gripper plate is connected to the second end of the second piston rod; Both the first connecting plate and the second connecting plate are slidably connected to the cylinder body.

6. The gripper adjustable device according to claim 5, characterized in that, The cylinder body is sequentially equipped with a first guide rail and a second guide rail along a first direction. The first connecting plate is provided with a first sliding groove, which is slidably disposed on the first guide rail; The second connecting plate is provided with a second sliding groove, which is slidably disposed on the second guide rail.

7. The gripper adjustable device according to claim 6, characterized in that, The second guide rail has a first groove on both sides opposite to each other, and the second slide groove has a second groove on the two groove walls opposite to each other. The guide rail ball is installed in the cavity defined by the groove opening of the first groove and the groove opening of the second groove opposite to each other.

8. The gripper adjustable device according to claim 1, characterized in that, The first cavity is provided with a first air hole and a second air hole connected to the first driving source, and the second cavity is provided with a third air hole and a fourth air hole connected to the second driving source. The first piston rod is connected to a first piston at its first end, and the first piston slides between the first vent and the second vent in a sealed manner. The second piston rod is connected to a second piston at its second end, and the second piston slides between the third vent and the fourth vent.

9. The gripper adjustable device according to claim 5, characterized in that, There are two first cavities, and each of the two first cavities is provided with a first piston rod. Both first piston rods are connected to the first gripper plate. There are two second cavities, and each of the two second cavities is provided with a second piston rod. Both second piston rods are connected to the second gripper plate.

10. The gripper adjustable device according to any one of claims 1-9, characterized in that, The second end of the first piston rod extends sealed from the end of the first end of the cylinder along the first direction, and the second end of the second piston rod extends sealed from the end of the second end of the cylinder along the first direction.

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