Adjustable clamping mechanism for transportation robot

Abstract

The utility model belongs to the field of adjustable clamping, and provides an adjustable clamping mechanism for a transport robot, which comprises a rack, a clamping component and a power component, the clamping component comprises a first clamping arm and a second clamping arm which are mutually hinged on the rack, one end of the first clamping arm and one end of the second clamping arm are clamping ends, and the other end of the first clamping arm and the other end of the second clamping arm are clamping ends. The other ends of the two clamping ends are driving ends, the driving ends of the two clamping ends are both connected with abutting-pushing pieces, at least one abutting-pushing piece is detachably installed, and the distance between the two clamping ends can be adjusted by installing different abutting-pushing pieces at the driving ends. Compared with the prior art, the clamping device has the advantages that a user only needs to simply replace different abutting and pushing pieces to adjust the distance between the clamping ends (namely the opening size), the state suitable for the size of a current workpiece can be rapidly adjusted, complex setting or adjusting procedures are not needed, the overall production efficiency is improved, and meanwhile the production cost is reduced. In addition, the mechanism can meet the clamping requirements of workpieces of various sizes, and the flexibility is improved.

Description

Technical Field

[0001] The utility model belongs to the field of adjustable clamping, and in particular relates to an adjustable clamping mechanism for a transport robot. Background Art

[0002] In the field of industrial automation, particularly in manufacturing, logistics, and warehouse management, the rapid and accurate grasping and movement of workpieces of varying sizes is a key factor in improving production efficiency. As market demand for customized products grows, material specifications on production lines are becoming increasingly diverse. This requires mechanical equipment to flexibly handle items of various sizes to ensure continuous and flexible production.

[0003] However, many clamping mechanisms currently on the market tend to have fixed designs, with limited clamping ranges, making it difficult to adapt to workpieces of various specifications. This limitation not only reduces the application range of the equipment, but also leads to the following problems:

[0004] 1. Increased operational complexity: When processing workpieces of different sizes, operators may need to replace the fixture, which adds additional workload and is prone to human errors.

[0005] 2. Inefficiency: Frequent fixture replacement will interrupt the normal production process, affect production efficiency, and reduce overall production capacity.

[0006] 3. Rising costs: In order to meet different production needs, companies may have to purchase multiple models of clamping devices, which increases the cost of initial investment and subsequent maintenance. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an adjustable clamping mechanism for a transport robot.

[0008] The utility model solves the technical problem by adopting a technical solution of providing an adjustable clamping mechanism for a transport robot, which is used to quickly clamp workpieces of different sizes. The mechanism comprises a frame, a clamping assembly, and a power assembly, wherein:

[0009] The clamping assembly includes a first clamping arm and a second clamping arm hinged to each other on the frame, one end of each of the first clamping arm and the second clamping arm is a clamping end, and the other end of each is a driving end, both driving ends are connected to a push piece, and at least one of the push pieces is detachably installed, and the distance between the two clamping ends can be adjusted by installing different push pieces on the driving end;

[0010] The output end of the power assembly movably abuts against the driving end, and is used to push the two driving ends away from each other, so that the two clamping ends move closer to each other and clamp the workpiece.

[0011] In the above-mentioned adjustable clamping mechanism for a transport robot, a mounting seat and a mounting shaft are provided on the frame, the mounting seats are distributed on both sides of the driving end, the mounting shaft passes through the mounting seat and the driving end, and a first elastic member is provided on the mounting seat and is sleeved on the mounting shaft, and the first elastic member is movably pressed against the side wall of the driving end.

[0012] In the above-mentioned adjustable clamping mechanism for a transport robot, a detachably connected clamping block is provided on the clamping end, a locking groove is formed in the clamping block, and the locking groove is movably pressed against the outer wall of the workpiece to limit the displacement of the workpiece.

[0013] In the above-mentioned adjustable clamping mechanism for a transport robot, the middle positions of the first clamping arm and the second clamping arm are connected by a pin shaft, and a locking ring is movably clamped at the end of the pin shaft to limit the displacement of the first clamping arm and the second clamping arm along the axial direction of the pin shaft.

[0014] In the above-mentioned adjustable clamping mechanism for a transport robot, an adjusting shaft and a movable seat are further provided on the frame, the adjusting shaft is connected to the movable seat and is movable through the outside of the frame; the pin shaft is movably connected to the movable seat, and the side wall of the movable seat is connected to a second elastic member sleeved on the adjusting shaft, and the second elastic member is movably pressed against the frame.

[0015] In the above-mentioned adjustable clamping mechanism for a transport robot, the movable seat is arranged in a U-shape, and a support block is provided at the middle position of the movable seat, and the pin shaft passes through the support block and is connected to the movable seat.

[0016] In the above-mentioned adjustable clamping mechanism for a transport robot, a waist-shaped hole is further formed in the driving end, and the mounting shaft movably passes through the waist-shaped hole.

[0017] In the above-mentioned adjustable clamping mechanism for a transport robot, washers are installed between adjacent ones of the support block, the first clamping arm, and the second clamping arm.

[0018] In the above-mentioned adjustable clamping mechanism for a transport robot, the power assembly includes a driving member and a conical block, the driving member is installed on the side wall of the frame, the large end diameter of the conical block is connected to the output end of the driving member, and the conical block is used to movably abut against the pushing member.

[0019] In the above-mentioned adjustable clamping mechanism for a transport robot, a semi-sealed cavity is opened in the frame, and the side opening of the semi-sealed cavity allows the clamping end to extend and clamp the workpiece; the top opening of the semi-sealed cavity can provide a replacement space for the push member.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) In the utility model, in an adjustable clamping mechanism for a transport robot, the user only needs to simply replace different push members to adjust the distance between the clamping ends (i.e., the size of the opening and closing), and can quickly adjust to a state suitable for the current workpiece size. No complicated setting or adjustment procedures are required, and it is convenient to replace worn parts individually without having to replace the entire set. This reduces the maintenance cost under long-term use, improves the overall production efficiency, and also enables the mechanism to adapt to the clamping needs of workpieces of various sizes, thereby improving flexibility.

[0022] (2) By connecting the pin shaft to the movable seat, the stability of the first clamping arm and the second clamping arm during operation is ensured. At the same time, the second elastic member is used in conjunction with the adjusting shaft to effectively adjust the position of the pin shaft relative to the frame, ensuring that the clamping end can maintain a stable clamping state even for workpieces with position offset.

[0023] (3) The waist-shaped hole can provide sufficient space for adjusting the position of the pin shaft on the frame, effectively avoiding the position interference between the driving end and the mounting shaft and causing jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the present application;

[0025] Figure 2 Schematic diagram of the installation structure of the first elastic member, the mounting seat and the mounting shaft in the frame;

[0026] Figure 3 Schematic diagram of the installation structure between the movable seat, the second elastic member, the first clamping arm and the second clamping arm;

[0027] Figure 4 yes Figure 3 Schematic diagram of the cross section at AA in the middle.

[0028] In the figure, 1, frame; 10, semi-sealed chamber; 11, mounting seat; 110, first elastic member; 12, mounting shaft; 120, locking nut; 13, adjusting shaft; 14, moving seat; 140, second elastic member; 141, supporting block; 15, fixed guide sleeve; 16, flange;

[0029] 2. Clamping assembly; 20. First clamping arm; 21. Second clamping arm; 220. Clamping end; 220a. Clamping block; 220b. Locking groove; 221. Driving end; 221a. Waist-shaped hole; 23. Pin; 24. Locking ring; 25. Washer;

[0030] 3. Pushing parts;

[0031] 4. Power assembly; 40. Driving member; 41. Conical block. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] like Figures 1 to 4 As shown, the utility model is an adjustable clamping mechanism for a transport robot, which is used to achieve rapid clamping of workpieces of different sizes. The adjustable clamping mechanism mainly includes a frame 1, a clamping assembly 2 and a power assembly 4, wherein: the clamping assembly 2 includes a first clamping arm 20 and a second clamping arm 21 hinged to each other on the frame 1, one end of the first clamping arm 20 and the second clamping arm 21 is a clamping end 220, and the other end of the two is a driving end 221, both driving ends 221 are connected with a push piece 3, and at least one push piece 3 is detachably installed, and the distance between the two clamping ends 220 can be adjusted by installing different push pieces 3 on the driving end 221; the output end of the power assembly 4 movably abuts against the driving end 221, and is used to push the two driving ends 221 away from each other, so that the two clamping ends 220 can approach each other and clamp the workpiece.

[0034] This solution is mainly to quickly adjust the opening and closing size of the clamping end to meet the clamping requirements of workpieces of different sizes. Specifically, Figures 1 to 4 As shown, when the workpiece to be clamped is placed at the specified position, it is first necessary to select a suitable push member 3 according to the size of the workpiece to be clamped. As the push member 3 is installed on the driving end 221 of the clamping assembly 2, the power assembly 4 can start working. Figure 1As shown, when the output end of the power assembly 4 gradually extends into the interior of the frame 1, the two driving ends 221 with the push members 3 can move toward the two side walls of the frame 1 (i.e., the two push members 3 move away from the driving ends 221). Since the first clamping arm 20 and the second clamping arm 21 are hinged at the same point, the moving away of the two driving ends 221 is converted into the gradual closing of the two clamping ends 220, thereby clamping the target workpiece without causing damage. It can be seen that the distance moved by the driving end 221 on the frame 1 determines the opening and closing size of the clamping end 220. Therefore, when facing workpieces of different sizes, the worker can replace different push members 3 to adjust the spacing of the clamping ends 220 to ensure that the clamping end 220 can quickly and stably complete the clamping operation of the workpiece, effectively avoiding the clamping end 220 affecting the efficiency of the overall clamping of the workpiece due to a long idle stroke. The adjustable clamping mechanism can quickly and easily adjust the clamping range by replacing different push members 3, thereby reducing preparation time and maintenance costs. At the same time, it can adapt to workpieces of various sizes and shapes, greatly improving the flexibility of equipment use.

[0035] Preferably, at least one of the push members 3 in this embodiment is detachably mounted. For example, when replacing the detachable push member 3 on the first clamping arm 20, the second clamping arm 21 can be used as a reference for clamping the workpiece. By quickly approaching the clamping end 220 of the first clamping arm 20 to the clamping end 220 of the second clamping arm 21, the workpiece can also be clamped quickly and stably. It should be noted that the push members 3 in this solution use nuts of different sizes. Of course, the push members 3 are not limited to the one in this embodiment. They can also be implemented by contacting the output end of the power assembly 4 with a mounted sphere. In addition, the different push members 3 referred to in this embodiment can be of different shapes (such as cylindrical or spherical, etc.) or different sizes (such as nuts of different models, or spheres of different diameters), and can be adapted to workpieces of different diameters through selection.

[0036] A mounting seat 11 and a mounting shaft 12 are provided on the frame 1. The mounting seats 11 are distributed on both sides of the driving end 221. The mounting shaft 12 passes through the mounting seat 11 and the driving end 221. A first elastic member 110 is provided on the mounting seat 11 and is sleeved on the mounting shaft 12. The first elastic member 110 is movably pressed against the side wall of the driving end 221.

[0037] like Figure 1 and Figure 2As shown, the mounting base 11 and the first elastic member 110 in this embodiment are both symmetrically arranged in the frame 1. When the clamping end 220 is in a non-working state, the first elastic member 110 maintains a natural state or a slightly compressed state. At this time, it applies a certain pre-pressure to the driving end 221 to ensure that the entire clamping assembly 2 can maintain a certain structural rigidity even in the absence of external force. When it is necessary to clamp the workpiece, the power assembly 4 starts to operate, and pushes the two driving ends 221 away from each other along the axial direction of the mounting shaft 12 through the output end. Due to the action of the first elastic member 110, the driving end 221 can move more stably when subjected to external thrust, thereby driving the two clamping ends 220 to gradually approach each other until they contact the workpiece and complete the clamping action. When it is necessary to release the workpiece, it is only necessary to reverse the operation of the power assembly 4. In the absence of continuous external force, the first elastic member 110 will cause the driving end 221 and the corresponding clamping arm to return to the initially set position, so that the workpiece can be easily removed. During this process, the first elastic member 110 can not only realize the automatic reset of the first clamping arm 20 and the second clamping arm 21, but also reduce mechanical wear by buffering the direct impact force from the power component 4, thereby helping to extend the overall service life of the clamping end 220, and prevent the clamping end 220 from causing damage to the workpiece due to excessive clamping speed.

[0038] Preferably, this embodiment also has a locking nut 120 threadedly connected to the mounting shaft 12. By tightening the locking nut 120 against the outer wall of the frame 1, the stability of the driving end 221 when moving along the axial direction of the mounting shaft 12 is effectively guaranteed. At the same time, the structure is easy to disassemble, providing convenience for subsequent maintenance and replacement.

[0039] The middle positions of the first clamping arm 20 and the second clamping arm 21 are connected by a pin shaft 23 , and a locking ring 24 is movably engaged at the end of the pin shaft 23 to limit the displacement of the first clamping arm 20 and the second clamping arm 21 along the axial direction of the pin shaft 23 .

[0040] Further, if Figure 3 and Figure 4 As shown, the first clamping arm 20 and the second clamping arm 21 in this embodiment intersect at a point located exactly in the middle of the two arms and are connected by a pin 23. The locking ring 24 effectively prevents the two clamping arms from moving along the axis of the pin 23, limiting unnecessary displacement, ensuring the workpiece is accurately secured during the clamping process, and improving overall stability. It should be noted that the locking ring 24 in this embodiment is similar to a retaining spring structure. This design is both simple and practical, allowing for quick assembly and disassembly, and facilitating routine maintenance and troubleshooting.

[0041] The frame 1 is also provided with an adjusting shaft 13 and a movable seat 14. The adjusting shaft 13 is connected to the movable seat 14 and is movable through the outside of the frame 1; the pin shaft 23 is movably connected to the movable seat 14, and the side wall of the movable seat 14 is connected to a second elastic member 140 which is sleeved on the adjusting shaft 13, and the second elastic member 140 is movably pressed against the frame 1.

[0042] In order to cope with the situation of some workpiece offset, this solution also proposes a structural design of the adjustment shaft 13, specifically, Figures 2 to 4 As shown, both sides of the movable seat 14 are connected with an adjustment shaft 13. By passing the adjustment shaft 13 through and extending outside the frame 1, the movable seat 14 and the frame 1 are designed to be non-contact. Since the pin 23 connecting the first clamping arm 20 and the second clamping arm 21 is set on the movable seat 14, the position of the movable seat 14 can be easily adjusted by the adjustment shaft 13. That is, in the process of pulling the adjustment shaft 13, the change in the position of the movable seat 14 will inevitably drive the change in the position of the pin 23 relative to the frame 1, thereby causing the rotation center of the first clamping arm 20 and the second clamping arm 21 to change accordingly, so as to ensure that the clamping end 220 can smoothly perform a stable clamping operation on the offset workpiece, thereby improving the flexibility during operation. It should be noted that the design of the first elastic member 110 ensures the stability of the movable seat 14 during movement, avoiding the accuracy of the clamping end 220 clamping the workpiece due to shaking or tilting, and on the other hand, it can achieve automatic reset after position adjustment, ensuring that the normally placed workpiece can always maintain a stable clamping operation.

[0043] Further, if Figure 3 As shown, the drive end 221 of this embodiment further includes a waist-shaped hole 221a, through which the mounting shaft 12 movably extends. Due to the adjustment of the position of the pin 23 by the adjusting shaft 13, the first clamping arm 20 and the second clamping arm 21 are tilted relative to the frame 1. The presence of the waist-shaped hole 221a increases the freedom of movement of the drive end 221 relative to the mounting shaft 12, effectively preventing positional interference or even jamming between the drive end 221 and the mounting shaft 12, which could affect the accuracy and stability of workpiece clamping.

[0044] Preferably, this embodiment can also be provided with a fixed guide sleeve 15 in the frame 1. By adjusting the shaft 13 and movably inserting the fixed guide sleeve 15, it plays a guiding and limiting role when the adjusting shaft 13 drives the movable seat 14 to adjust the position of the pin shaft 23, thereby further improving the stability and accuracy of the structure during operation.

[0045] Further, if Figures 3 and 4As shown, the movable base 14 in this embodiment is U-shaped, and a support block 141 is provided in the middle of the movable base 14. The pin 23 passes through the support block 141 and is connected to the movable base 14. The U-shaped structure provides sufficient space for the first clamping arm 20 and the second clamping arm 21 to rotate around the pin 23 to perform the clamping action. At the same time, the support block 141 provides a stable fulcrum for the pin 23, avoiding the problem of inaccurate clamping caused by radial shaking of the pin 23, thereby improving the positioning accuracy during the clamping process.

[0046] Preferably, if Figure 4 As shown, washers 25 are installed between the support block 141, the first clamping arm 20, and the second clamping arm 21 in this embodiment. These washers 25 act as a barrier, effectively reducing direct contact between the first clamping arm 20 and the second clamping arm 21, reducing wear when the two arms rotate relative to the pin 23 and extending their service life. Furthermore, during the clamping and releasing processes, the washers 25 absorb impact forces, providing a shock-absorbing effect and protecting key components such as the clamping arms.

[0047] The clamping end 220 is provided with a detachably connected clamping block 220a, and a locking groove 220b is formed in the clamping block 220a. The locking groove 220b is movably pressed against the outer wall of the workpiece to limit the displacement of the workpiece.

[0048] like Figure 3 As shown, the clamping block 220a in this embodiment can be connected to the clamping end 220 by screws, bolts, or other fasteners. The clamping block 220a replaces the direct contact between the clamping end 220 and the workpiece, thereby reducing the risk of wear and even damage to the clamping end 220. The design of the locking groove 220b allows the clamping block 220a to fit more closely to the outer wall of the workpiece, providing stronger friction and effectively preventing the workpiece from sliding or shifting during the clamping process. Preferably, the inner wall of the locking groove 220b in this embodiment can be configured in an arc shape, or can be configured in other shapes such as a locking bevel set at an angle to ensure stable clamping of workpieces of different shapes.

[0049] The power assembly 4 includes a driving member 40 and a conical block 41. The driving member 40 is mounted on the side wall of the frame 1. The large end diameter of the conical block 41 is connected to the output end of the driving member 40. The conical block 41 is used to movably abut against the push member 3.

[0050] like Figure 1 and Figure 2As shown, the power assembly 4 in this embodiment is mainly composed of two parts: a driving member 40 and a conical block 41. Among them, the driving member 40 is mainly used to drive the conical block 41 to move into the frame 1 and be inserted against the two push members 3. The inclined surface design of the conical block 41 is used to make the thrust of the two push members 3 be transmitted in a progressive manner, which helps to improve the positioning accuracy during the clamping process and ensure that the workpiece is accurately fixed. For this reason, the smooth thrust transmission reduces the direct impact of mechanical parts, reduces the wear rate, and extends the service life of the equipment. It should be noted that the driving member 40 in this embodiment can be replaced by other devices that perform linear motion, such as linear guides and screw rods.

[0051] Preferably, a semi-sealed cavity 10 is provided in the frame 1 in this embodiment. Figure 1 and Figure 2 As shown, the side opening of the semi-sealed chamber 10 faces the workpiece to be clamped, allowing the clamping end 220 to drive the clamping block 220a out of the semi-sealed chamber 10 and complete the workpiece clamping operation. The top opening of the semi-sealed chamber 10 provides space for workers or manipulators to replace the push member 3, ensuring that it is not affected by other components during the replacement process, ensuring smooth and convenient replacement. In addition, this embodiment can also be equipped with a flange 16 on the bottom of the frame 1, through which the adjustable clamping mechanism can be assembled on the desired robot for convenient operation.

[0052] It should be noted that the first elastic member 110 and the second elastic member 140 in this embodiment can be replaced by other elastic devices such as compression springs and return springs.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0056] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. An adjustable clamping mechanism for a transport robot, used to quickly clamp workpieces of different sizes, characterized in that: It includes a frame, a clamping assembly and a power assembly, wherein: The clamping assembly includes a first clamping arm and a second clamping arm hinged to each other on the frame, one end of each of the first clamping arm and the second clamping arm is a clamping end, and the other end of each is a driving end, both driving ends are connected to a push piece, and at least one of the push pieces is detachably installed, and the distance between the two clamping ends can be adjusted by installing different push pieces on the driving end; The output end of the power assembly movably abuts against the driving end, and is used to push the two driving ends away from each other, so that the two clamping ends move closer to each other and clamp the workpiece.

2. The adjustable clamping mechanism for a transport robot according to claim 1, characterized in that: The frame is provided with a mounting seat and a mounting shaft, the mounting seats are distributed on both sides of the driving end, the mounting shaft passes through the mounting seat and the driving end, and a first elastic member is provided on the mounting seat and is sleeved on the mounting shaft, and the first elastic member is movably pressed against the side wall of the driving end.

3. The adjustable clamping mechanism for a transport robot according to claim 1, characterized in that: The clamping end is provided with a clamping block detachably connected thereto, a locking groove is formed in the clamping block, and the locking groove is movably pressed against the outer wall of the workpiece to limit the displacement of the workpiece.

4. The adjustable clamping mechanism for a transport robot according to claim 2, characterized in that: The middle positions of the first clamping arm and the second clamping arm are connected by a pin shaft, and a locking ring is movably clamped at the end of the pin shaft to limit the displacement of the first clamping arm and the second clamping arm along the axial direction of the pin shaft.

5. The adjustable clamping mechanism for a transport robot according to claim 4, characterized in that: The frame is also provided with an adjusting shaft and a movable seat, the adjusting shaft is connected to the movable seat and movably extends through the outside of the frame; the pin is movably connected to the movable seat, and the side wall of the movable seat is connected to a second elastic member sleeved on the adjusting shaft, and the second elastic member movably rests against the frame.

6. The adjustable clamping mechanism for a transport robot according to claim 5, characterized in that: The movable seat is arranged in a U shape, and a support block is arranged at the middle position of the movable seat. The pin shaft passes through the support block and is connected to the movable seat.

7. The adjustable clamping mechanism for a transport robot according to claim 2, characterized in that: A waist-shaped hole is also formed in the driving end, and the mounting shaft movably passes through the waist-shaped hole.

8. The adjustable clamping mechanism for a transport robot according to claim 6, characterized in that: Washers are installed between adjacent ones of the support block, the first clamping arm and the second clamping arm.

9. The adjustable clamping mechanism for a transport robot according to claim 1, characterized in that: The power assembly includes a driving member and a conical block. The driving member is installed on the side wall of the frame. The large end diameter of the conical block is connected to the output end of the driving member. The conical block is used to movably abut against the push member.

10. The adjustable clamping mechanism for a transport robot according to claim 1, characterized in that: A semi-sealed cavity is provided in the frame, and a side opening of the semi-sealed cavity allows the clamping end to extend and clamp the workpiece; the top opening of the semi-sealed cavity can provide a replacement space for the push member.

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