Clamping jaw
By designing a jaw for a concentric automatic core adjustment equipment, the problem of the three jaws need to be withdrawn and wait after placing the workpiece, achieving more efficient process completion and reducing the number and cost of equipment.
Patent Information
- Application Number
- CN202411881125.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-04-11
AI Technical Summary
During the compressor manufacturing process, the three jaws need to exit outside the equipment and wait after placing the workpiece, resulting in slower process beats and affecting production efficiency.
A jaw is designed, including a first clamping unit, the first clamping unit includes a cylinder, a first clamping arm, a second clamping arm, an adapter unit, a first fixing part and a second fixing part. The jaw can wait in the device. When the bolt tightens the gun and rises to the initial position, the jaw can move and remove the workpiece from the device to avoid moving outside the device to wait.
Through this design, the rhythm of the tightening process of the lower cylinder head, cylinder and upper cylinder head is reduced from 13 seconds to 7.8 seconds, which significantly improves production efficiency and reduces the number of concentric automated core adjustment equipment while the output remains unchanged, reducing the equipment cost.
Smart Images
Figure CN119795086A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of clamping claws, in particular to a clamping claw. Background Art
[0002] like Figure 1 As shown, in the compressor manufacturing process, it is necessary to use a concentric machine automatic core alignment device to tighten the workpiece 1. The workpiece 1 generally includes a lower cylinder head 101, a cylinder 102 and an upper cylinder head 103 pre-tightened by multiple bolts. The cylinder 102 includes a protruding portion 1021 and a circular portion 1022. Figure 2 and Figure 3 As shown, the concentric machine automatic core alignment device includes a clamping claw 2, a working platform 3, a bolt tightening gun 4 and a driving mechanism; the clamping claw 2 is a double three-claw type, and the clamping claw 2 includes a connecting plate 201, two three-claws 202 and two cylinders; a three-claw 202 is installed at both ends of one side of the connecting plate 201, and each three-claw 202 is equipped with a cylinder; the clamping claw 2 includes a cylinder and Figure 1 The cylinder 102 of the compressor is not the same cylinder; the cylinder included in the claw 2 is a commonly used component for providing power, used to drive the piston rod to reciprocate in a straight line so as to open or clamp the three jaws 202; the cylinder 102 of the compressor is used to drive the piston in the cylinder 102 to reciprocate and compress the gas in the cylinder 102; the other side of the connecting plate 201 is used to connect the robotic arm, and the robotic arm is used to drive the connecting plate 201 to move; the bolt tightening gun 4 is connected to the driving mechanism, and the driving mechanism is used to drive the bolt tightening gun 4 to move up and down and tighten the bolts.
[0003] The operation process of the concentric machine automatic core alignment equipment is as follows: Figure 1 , Figure 4 and Figure 5 As shown, two three-claw clamps 202 clamp a workpiece 1 respectively. The three-claw clamps 202 are usually clamped at the side position of the circular portion 1022 of the cylinder 102. In order to make the figure simple, Figure 5 The lower cylinder head 101 is not shown; Figure 3 and Figure 5As shown, a three-jaw clamp 202 places the workpiece 1 on the working platform 3 and then withdraws to wait outside the equipment; the driving mechanism first drives the bolt tightening gun 4 to descend, then tightens and reinforces the pre-tightened bolts, and finally moves the bolt tightening gun 4 upward to the initial position; the waiting three-jaw clamp 202 enters the equipment, clamps the workpiece 1 after moving downward, and takes the workpiece 1 out of the equipment; the robot arm drives the connecting plate 201 to rotate, so that another three-jaw clamp 202 and the workpiece 1 clamped by it enter the equipment, and the other three-jaw clamp 202 opens and places the workpiece 1 on the working platform 3 and then withdraws Wait outside the equipment; the driving mechanism first drives the bolt tightening gun 4 to descend, then tightens and reinforces the pre-tightened bolts, and finally moves the bolt tightening gun 4 upward to the initial position; another three-jaw 202 enters the equipment, clamps the workpiece 1 after moving downward, and takes the workpiece 1 out of the equipment; the robotic arm drives the two three-jaws 202 to move to the material discharge position, and the two three-jaws 202 open and put down the tightened and reinforced workpiece 1; the robotic arm then drives the two three-jaws 202 to move to the material removal position, and each three-jaw 202 clamps a workpiece 1 respectively and then repeats the above steps.
[0004] As can be seen from the above, in order to prevent the three-jaw clamp 202 and the bolt tightening gun 4 from interfering with each other and colliding, the three-jaw clamp 202 must withdraw from the equipment and wait after placing the workpiece 1. Only after the bolt tightening gun 4 returns to its initial position can the three-jaw clamp 202 enter the equipment to grab the workpiece 1. This results in a slower cycle time of this process, which is usually 13 seconds. Summary of the invention
[0005] The invention provides a clamping claw to solve the technical problem that three clamping claws need to withdraw to the outside of the equipment for waiting after placing a workpiece.
[0006] In order to solve the above technical problems, the present invention provides a clamping claw, comprising a first clamping unit, wherein the first clamping unit comprises a cylinder, a first clamping arm, a second clamping arm, a switching unit, a first fixing portion and a second fixing portion;
[0007] The cylinder comprises a cylinder body and a piston rod, wherein the cylinder body is provided with a fixing hole for fixing; one end of the piston rod is arranged outside the cylinder body, and the other end is arranged inside the cylinder body;
[0008] One end of the first clamp arm and one end of the second clamp arm are connected to one end of the piston rod through the adapter unit, and the piston rod is used to drive the first clamp arm and the second clamp arm to open or clamp; the first fixing portion is arranged on the first clamp arm, and the second fixing portion is arranged on the second clamp arm, and the first fixing portion and the second fixing portion are arranged opposite to each other and are used to clamp the workpiece.
[0009] Preferably, the transfer unit includes a first slider, a second slider, a fixed block, a first cam, a second cam and a connecting rod; the fixed block is fixed at one end of the cylinder body, and a slide groove, a first through hole and a second through hole are provided on the fixed block; one end of the first slider is connected to one end of the first clamping arm, and the other end of the first slider is installed in the slide groove and connected to one end of the first cam; one end of the second slider is connected to one end of the second clamping arm, and the other end of the second slider is installed in the slide groove and connected to one end of the second cam; the other end of the first cam is hinged to one end of the connecting rod; the other end of the second cam is hinged to the other end of the connecting rod; the first cam passes through the first through hole, and the second cam passes through the second through hole; one end of the piston rod is connected to the middle position of the connecting rod.
[0010] Preferably, the number of the first fixing parts is two, and the number of the second fixing part is one; the two first fixing parts are arranged on the first clamping arm at intervals.
[0011] Preferably, the second fixing portion is arranged on a perpendicular bisector of two of the first fixing portions.
[0012] Preferably, the clamping claw further comprises a connecting plate, the cylinder body is fixed to one end of the first side surface of the connecting plate through the fixing hole and the bolt, and a connecting head for connecting to a robotic arm is provided on the second side surface of the connecting plate.
[0013] Preferably, the first side surface and the second side surface are parallel.
[0014] Preferably, the first clamping unit is provided at the other end of the first side surface.
[0015] Preferably, the connecting head is arranged on a perpendicular bisector of the two first clamping units.
[0016] Preferably, the portion where the first fixing portion contacts the workpiece is in a pointed shape.
[0017] Preferably, the first fixing portion is fixed to the first clamping arm through a threaded hole, a pin hole, a bolt and a pin.
[0018] The present invention provides a clamping claw, comprising a first clamping unit, the first clamping unit comprising a cylinder, a first clamping arm, a second clamping arm, a switching unit, a first fixing part and a second fixing part. The clamping claw can be used in an automatic centering device for a concentric machine. After the clamping claw clamps a workpiece and places the workpiece on a working platform, the clamping claw can stop moving and wait in the device. After a bolt tightening gun tightens and reinforces the workpiece, the clamping claw can move and take out the workpiece from the device while the bolt tightening gun rises or when the bolt tightening gun rises to an initial position. The clamping claw no longer needs to move outside the device and wait for the bolt tightening gun to complete its operation before moving. In this way, the cycle time of the tightening process of the lower cylinder head, the cylinder and the upper cylinder head in the figure can be reduced to 7.8 seconds, which significantly improves production efficiency. The number of automatic centering devices for concentric machines can be reduced without changing the output, thereby reducing the investment in equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a workpiece in the prior art.
[0020] Figure 2 It is a structural schematic diagram of a clamping claw in the prior art.
[0021] Figure 3 The invention is a structural schematic diagram of an operating platform and a bolt tightening gun of an automatic core-adjusting device of a concentric machine in the prior art.
[0022] Figure 4 yes Figure 2 Schematic diagram of the structure of the clamping jaws clamping two workpieces.
[0023] Figure 5 yes Figure 4 Schematic top view of .
[0024] Figure 6 It is a schematic structural diagram of a clamping claw provided in one embodiment of the present invention.
[0025] Figure 7 yes Figure 6 Schematic cross-sectional view of the jaws in the figure when open.
[0026] Figure 8 yes Figure 6 Schematic cross-sectional view of the jaws clamping a workpiece.
[0027] Fig. 9 It is a schematic structural diagram of a clamping claw provided in one embodiment of the present invention.
[0028] Fig.10 yes Fig. 9 Schematic diagram of the structure of the first clamping unit clamping a workpiece.
[0029] Fig.11 yes Fig.10Schematic diagram of the main view.
[0030] [Description of reference numerals is as follows]:
[0031] Figure 1 to Figure 5 : Workpiece-1, claw-2, working platform-3, bolt tightening gun-4;
[0032] Lower cylinder head-101, cylinder-102, upper cylinder head-103;
[0033] Protruding portion-1021, rounded portion-1022;
[0034] Connecting plate-201, three clamping jaws-202;
[0035] Figure 6 to Figure 11 : The first clamping unit-11;
[0036] Cylinder 111, first clamping arm 112, second clamping arm 113, adapter unit 114, first fixing part 115, second fixing part 116, connecting plate 117;
[0037] Cylinder body-1111, piston rod-1112, fixing hole-1113;
[0038] A first slider 1141, a second slider 1142, a fixing block 1143, a first cam 1144, a second cam 1145, a connecting rod 1146, and a sliding groove 1147;
[0039] Threaded hole-1151, pin hole-1152;
[0040] Connector-1171. DETAILED DESCRIPTION
[0041] In order to make the purpose, advantages and features of the present invention more clear, a clamping claw proposed by the present invention is further described in detail below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0042] In the description of the present invention, the terms "first", "second", etc. are added for the convenience of description and reference, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined by the terms "first", "second", etc. may explicitly or implicitly include one or more of the features.
[0043] like Figure 6 to Figure 8As shown, this embodiment provides a claw, including a first clamping unit 11, the first clamping unit 11 includes a cylinder 111, a first clamping arm 112, a second clamping arm 113, a switching unit 114, a first fixing portion 115 and a second fixing portion 116; the cylinder 111 includes a cylinder body 1111 and a piston rod 1112, and the cylinder body 1111 is provided with a fixing hole 1113 for fixing; one end of the piston rod 1112 is arranged outside the cylinder body 1111, and the other end is arranged on the cylinder body 1111 1; one end of the first clamp arm 112 and one end of the second clamp arm 113 are connected to one end of the piston rod 1112 through the adapter unit 114, and the piston rod 1112 is used to drive the first clamp arm 112 and the second clamp arm 113 to open or clamp; the first fixing portion 115 is arranged on the first clamp arm 112, and the second fixing portion 116 is arranged on the second clamp arm 113, and the first fixing portion 115 and the second fixing portion 116 are arranged opposite to each other and are used to clamp the workpiece.
[0044] This embodiment provides a clamping claw, including a first clamping unit 11, and the first clamping unit 11 includes a cylinder 111, a first clamping arm 112, a second clamping arm 113, an adapter unit 114, a first fixing portion 115, and a second fixing portion 116. The clamping claw can be used in the concentric machine automatic centering equipment. After the clamping claw clamps the workpiece and places the workpiece on the working platform, the clamping claw can stop moving and wait in the equipment. After the bolt tightening gun tightens and reinforces the workpiece, the clamping claw can move and take out the workpiece from the equipment while the bolt tightening gun rises or when the bolt tightening gun rises to the initial position. The clamping claw no longer needs to move outside the equipment and wait for the bolt tightening gun to complete the operation before moving, which can make Figure 1 The cycle time of the tightening process of the middle and lower cylinder head 101, the cylinder 102 and the upper cylinder head 103 is reduced to 7.8 seconds, which significantly improves the production efficiency; the number of concentric machine automatic core adjustment equipment can be reduced without changing the output, thereby reducing the investment in equipment cost.
[0045] Preferably, Figure 6 and Figure 7As shown, the adapter unit 114 includes a first slider 1141, a second slider 1142, a fixed block 1143, a first cam 1144, a second cam 1145 and a connecting rod 1146; the fixed block 1143 is fixed to one end of the cylinder body 1111, and a slide groove 1147, a first through hole and a second through hole are provided on the fixed block 1143; one end of the first slider 1141 is connected to one end of the first clamping arm 112, and the other end of the first slider 1141 is installed in the slide groove 1147 and connected to one end of the first cam 1144; the second One end of the slider 1142 is connected to one end of the second clamp arm 113, and the other end of the second slider 1142 is installed in the slide slot 1147 and connected to one end of the second cam 1145; the other end of the first cam 1144 is hinged to one end of the connecting rod 1146; the other end of the second cam 1145 is hinged to the other end of the connecting rod 1146; the first cam 1144 passes through the first through hole, and the second cam 1145 passes through the second through hole; one end of the piston rod 1112 is connected to the middle position of the connecting rod 1146. The adapter unit 114 can convert the linear motion of the piston rod 1112 into the linear motion of the first slider 1141 and the second slider 1142, thereby opening or clamping the first clamp arm 112 and the second clamp arm 113. In other embodiments, the adapter unit 114 can be a scissor-fork structure, and the scissor-fork structure can also convert the linear motion of the piston rod 1112 into the linear motion of the first slider 1141 and the second slider 1142.
[0046] Preferably, Figure 6 and Figure 7 As shown, the number of the first fixing parts 115 is two, and the number of the second fixing part 116 is one; the two first fixing parts 115 are arranged on the first clamping arm 112 at intervals. Providing two first fixing parts 115 can improve the clamping effect of the clamping claw. Figure 5 , Fig.10 and Fig.11 As shown, the gripping position of the workpiece before and after the improvement can be the same or different; in order to make the figure simple, Fig.10 and Fig.11 The lower cylinder head and the upper cylinder head are not shown, only the cylinder is shown. In other embodiments, the number of the first fixing portion 115 and the second fixing portion 116 can be adjusted according to the shape and size of the workpiece.
[0047] Preferably, Figure 7 As shown, the second fixing portion 116 is disposed on the perpendicular bisector of the two first fixing portions 115 , which can improve the clamping effect of the claws. In other embodiments, the second fixing portion 116 may not be on the perpendicular bisector of the two first fixing portions 115 .
[0048] Preferably, Figures 9 to 11 As shown, the claw further includes a connecting plate 117, the cylinder body 1111 is fixed to one end of the first side of the connecting plate 117 through the fixing hole 1113 and the bolt, and a connecting head 1171 for connecting the mechanical arm is provided on the second side of the connecting plate 117. The mechanical arm and the connecting plate 117 can be quickly connected through the connecting head 1171. The connecting head 1171 can be a flange or a flange-like structure.
[0049] Preferably, Fig.10 As shown, the first side surface is parallel to the second side surface, which facilitates installation of the first clamping unit 11 on the first side surface.
[0050] Preferably, reference Figure 6 and Fig. 9 As shown, the other end of the first side surface is provided with the first clamping unit 11. Figure 2 The utility model relates to a clamping jaw comprising two three clamping jaws in the prior art. Fig. 9 The left end of the middle connecting plate 117 is the three clamping claws before the improvement, and the right end of the connecting plate 117 is the first clamping unit 11 after the improvement. When the present invention is actually used, Figure 2 Only one of the two three-jaw clamps can be replaced by the first clamping unit 11, or the two three-jaw clamps can be replaced by the two first clamping units 11 at the same time.
[0051] Preferably, reference Figure 6 and Fig.10 As shown, the connecting head 1171 is arranged on the perpendicular bisector of the two first clamping units 11, which can improve the balance and stability of the claws.
[0052] Preferably, Figure 7 and Figure 8 As shown, the portion where the first fixing portion 115 contacts the workpiece is in a sharp angle. The first fixing portion 115 can tightly clamp the workpiece through the sharp angle tip to prevent the workpiece from falling off.
[0053] Preferably, Figure 7 As shown, the first fixing portion 115 is fixed to the first clamping arm 112 through a threaded hole 1151, a pin hole 1152, a bolt and a pin, so as to prevent the first fixing portion 115 from loosening. Similarly, the second fixing portion 116 can also be fixed to the second clamping arm 113 through a threaded hole 1151, a pin hole 1152, a bolt and a pin.
[0054] In summary, the present invention provides a clamping claw, including a first clamping unit 11, and the first clamping unit 11 includes a cylinder 111, a first clamping arm 112, a second clamping arm 113, a switching unit 114, a first fixing portion 115, and a second fixing portion 116. The clamping claw can be used in the concentric machine automatic core alignment equipment. After the clamping claw clamps the workpiece and places the workpiece on the working platform, the clamping claw can stop moving and wait in the equipment. After the bolt tightening gun tightens and reinforces the workpiece, the clamping claw can move and take out the workpiece from the equipment while the bolt tightening gun rises or when the bolt tightening gun rises to the initial position. The clamping claw no longer needs to move outside the equipment and wait for the bolt tightening gun to complete the operation before moving, which can make Figure 1 The cycle time of the tightening process of the middle and lower cylinder head 101, the cylinder 102 and the upper cylinder head 103 is reduced to 7.8 seconds, which significantly improves the production efficiency; the number of concentric machine automatic core adjustment equipment can be reduced without changing the output, thereby reducing the investment in equipment cost.
[0055] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art based on the above disclosure shall fall within the protection scope of the present invention.
Claims
1. A claw, characterized in that: It includes a first clamping unit, which includes a cylinder, a first clamping arm, a second clamping arm, a switching unit, a first fixing part and a second fixing part; The cylinder comprises a cylinder body and a piston rod, and the cylinder body is provided with a fixing hole for fixing; one end of the piston rod is arranged outside the cylinder body, and the other end is arranged inside the cylinder body; One end of the first clamp arm and one end of the second clamp arm are connected to one end of the piston rod through the adapter unit, and the piston rod is used to drive the first clamp arm and the second clamp arm to open or clamp; the first fixing portion is arranged on the first clamp arm, and the second fixing portion is arranged on the second clamp arm, and the first fixing portion and the second fixing portion are arranged opposite to each other and are used to clamp the workpiece.
2. A claw as claimed in claim 1, characterized in that: The transfer unit includes a first slider, a second slider, a fixed block, a first cam, a second cam and a connecting rod; the fixed block is fixed at one end of the cylinder body, and a slide groove, a first through hole and a second through hole are provided on the fixed block; one end of the first slider is connected to one end of the first clamping arm, and the other end of the first slider is installed in the slide groove and connected to one end of the first cam; one end of the second slider is connected to one end of the second clamping arm, and the other end of the second slider is installed in the slide groove and connected to one end of the second cam; the other end of the first cam is hinged to one end of the connecting rod; the other end of the second cam is hinged to the other end of the connecting rod; the first cam passes through the first through hole, and the second cam passes through the second through hole; one end of the piston rod is connected to the middle position of the connecting rod.
3. A claw as claimed in claim 1, characterized in that: The number of the first fixing parts is two, and the number of the second fixing part is one; the two first fixing parts are arranged on the first clamping arm at intervals.
4. A claw as claimed in claim 3, characterized in that: The second fixing portion is disposed on a perpendicular bisector of two of the first fixing portions.
5. A claw as claimed in claim 1, characterized in that: The clamping claw also includes a connecting plate, the cylinder body is fixed to one end of the first side of the connecting plate through the fixing hole and the bolt, and a connecting head for connecting to a robot arm is arranged on the second side of the connecting plate.
6. A claw as claimed in claim 5, characterized in that: The first side surface and the second side surface are parallel.
7. A claw as claimed in claim 5, characterized in that: The first clamping unit is disposed at the other end of the first side surface.
8. A claw according to claim 7, characterized in that: The connecting head is arranged on a perpendicular bisector of the two first clamping units.
9. A claw as claimed in claim 1, characterized in that: The portion where the first fixing portion contacts the workpiece is in a sharp angle.
10. A claw according to claim 1, characterized in that: The first fixing portion is fixed to the first clamping arm through a threaded hole, a pin hole, a bolt and a pin.