Grabbing mechanism with quick release structure

Abstract

This utility model relates to the field of gripping mechanism technology, and in particular to a gripping mechanism with a quick-release structure. It includes a support plate, a pushing mechanism screwed to one side of the support plate, a telescopic connecting rod at the tail end of the pushing mechanism, and a plurality of first clamping arms sleeved on the outer wall of the telescopic connecting rod. A first clamping block is provided on one side of each of the first clamping arms. A plurality of second clamping arms are rotatably connected to the surface of the support plate opposite to one side of the first clamping arms, and a second clamping block is provided on the side of each second clamping arm opposite to the first clamping block. A control box is located on one side of the top of the support plate. This device reduces maintenance time by using mounting screws in the pushing mechanism to connect the telescopic connecting rod. The first clamping arms are magnetically connected for tool-free quick release, and magnetic positioning ensures stability. The second clamping arms are disassembled by loosening the screws at both ends of the rotating rod and the handle. The overall quick-release structure improves maintenance efficiency and flexibility.

Description

Technical Field

[0001] This utility model relates to the field of gripping mechanism technology, specifically to a gripping mechanism with a quick-release structure. Background Technology

[0002] The gripping mechanism is a device on the PET preform production line used for automated gripping and transporting of preforms. It is typically pneumatic, hydraulic, or electric driven to grip the preforms. Some models integrate detection mechanisms to ensure gripping reliability. Its core function is to accurately transfer the preforms to subsequent workstations after injection molding, meeting the positioning accuracy and damage prevention requirements of high-speed production. PET preform production refers to the process of molding polyester raw materials into preforms using an injection molding machine, followed by cooling and handling processes to prepare the preforms for blow molding. The gripping mechanism is a key automated component connecting these processes.

[0003] Chinese utility model patent CN214779171U discloses a PET preform gripping mechanism, which includes: "A cylinder 8 drives a drive rod 3 to move, thereby moving a clamping block fixing plate 4. A first clamping block 5 moves towards a second clamping block 7, and the first clamping block 5 and the second clamping block 7 clamp the PET preform. When clamping larger preforms, the first clamping block 5 and the second clamping block 7 clamp the preform, and the compression energy of the spring 11 increases the distance between the first clamping block 5 and the second clamping block 7, thereby enabling the first clamping block 5 and the second clamping block 7 to clamp larger preforms; when the first clamping block 5 and the second clamping block 7 clamp the preform..." The other end of the clamping arm 6 swings toward the pressure sensor 9, thereby generating a certain pressure on the pressure sensor 9. If the PET preform cannot be accurately clamped, the pressure sensor 9 cannot sense the pressure of the clamping arm 6. The operator adjusts the position of the PET preform according to the clamping position where no pressure is sensed, thereby achieving the purpose of detecting whether the clamping mechanism misses clamping the PET preform and ensuring that the clamping mechanism can accurately clamp the PET preform. However, in the gripping mechanism in the patent document, the clamping mechanism is fixed to the drive rod with screws, and its limit seat needs to be disassembled with tools. Moreover, the drive rod and the cylinder connector are fixedly connected. During maintenance, the components need to be disassembled one by one, and it is not possible to quickly replace the clamping arm or repair the internal components, resulting in a long downtime for maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a gripping mechanism with a quick-release structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gripping mechanism with a quick-release structure, including a support plate, a pushing mechanism screwed to one side of the support plate, a telescopic connecting rod at the tail end of the pushing mechanism, a plurality of first clamping arms sleeved on the outer wall of the telescopic connecting rod, and a first clamping block on one side of the plurality of first clamping arms.

[0006] The surface of the support plate is rotatably connected to a plurality of second clamping arms on one side of a plurality of first clamping arms, and a second clamping block is provided on the side of the second clamping arm facing the first clamping block.

[0007] A control box is provided on one side of the top of the support plate.

[0008] The beneficial effects of this utility model are as follows: The hydraulically driven pushing mechanism, through the installation of the telescopic connecting rod with the mounting screw ring, allows for quick disassembly and maintenance, reducing maintenance time to one-third of the traditional method. The first clamping arm is connected by the magnetic insertion ring and the magnetic slot, allowing for quick manual disassembly and assembly without tools. When replacing parts, the magnetic force automatically positions them, improving maintenance efficiency and ensuring connection stability. The second clamping arm can be quickly disassembled from the support plate after being loosened by the fastening screw rings and the handle at both ends of the rotating rod, facilitating replacement and maintenance. The entire quick-disassembly structure significantly improves the flexibility and maintenance efficiency of the equipment.

[0009] To ensure smooth operation of the gripping arm during the grasping process, the hydraulic cylinder and piston rod in the pushing mechanism are connected to the mounting bolt, and then fixed to the telescopic connecting rod by the mounting bolt. This also allows for quick assembly and disassembly of the piston rod and telescopic connecting rod.

[0010] The mechanism is further configured such that: the pushing mechanism includes a hydraulic cylinder, the tail end of which is screwed to one side of the support plate, and the other end of the hydraulic cylinder is provided with a piston rod, the tail end of which is sleeved on the inner wall of the top end of the mounting ring, and the inner wall of the bottom end of the mounting ring is sleeved on the outer wall of one end of the telescopic connecting rod.

[0011] By adopting the above technical solution, the pushing mechanism uses a hydraulic cylinder as a power source. Its tail end is screwed to the support plate, and the other end is connected to the mounting bolt through the piston rod. The mounting bolt is then fixed to the telescopic connecting rod. The core advantage of this design is the stability and precise control of the hydraulic drive, which ensures that the gripping arm moves smoothly during the gripping process. At the same time, the mounting bolt sleeve structure enables quick assembly and disassembly of the piston rod and the telescopic connecting rod, reducing maintenance time to one-third of that of traditional bolted connections.

[0012] To enable the telescopic connecting rod to automatically adapt to the diameter of PET preforms of different sizes when gripping them via its internal cavity, compression spring, and pressure rod, and to ensure quick-release maintenance of the first clamping arm and telescopic connecting rod through the cooperation of the magnetic slot and magnetic insert:

[0013] The telescopic connecting rod is further configured such that: the inner wall of the telescopic connecting rod located between the multiple sets of first clamping blocks and second clamping blocks has several cavities; the inner wall of the several cavities is provided with compression springs; the side of the several compression springs near the first clamping block is provided with a pressure rod; the cavities and the pressure rod form a sliding connection; the outer wall of the telescopic connecting rod is provided with several magnetic slots; the insertion direction of the magnetic slots is directly opposite the mounting screw ring.

[0014] By adopting the above technical solution, a cavity is opened inside the telescopic connecting rod and a compression spring and a pressure rod are set. A magnetic slot is provided on the outer wall. When gripping PET preforms of different sizes, the compression spring can drive the pressure rod to slide in the cavity through its own deformation. This allows the distance between the first clamping block and the second clamping block to automatically adapt to the diameter of the preform, ensuring that preforms of different specifications can be stably clamped. In addition, the cooperation between the magnetic slot and the magnetic ring ensures the connection strength between the first clamping arm and the telescopic connecting rod, while providing convenience for subsequent quick disassembly and maintenance.

[0015] To achieve magnetic connection between the magnetic ferrule in the first clamping arm and the magnetic slot in the telescopic connecting rod, allowing operators to quickly disassemble the first clamping arm by manually disconnecting the magnetic connection without tools, and to automatically position and install new parts using magnetic force:

[0016] Further configuration: a magnetic insertion ring is provided between the symmetrically arranged first clamping arms, and the magnetic slot and the magnetic insertion ring form an adsorption connection.

[0017] By adopting the above technical solution, the symmetrically arranged first clamping arms are magnetically connected to the magnetic slot of the telescopic connecting rod through magnetic ferrules. The core function of this magnetic quick-release structure is to improve the flexibility and maintenance efficiency of the equipment. When it is necessary to replace the worn first clamping arm or adapt to bottle preforms of different shapes, the operator does not need tools. He can quickly disassemble the first clamping arm by manually disconnecting the magnetic connection. After replacing the new part, it is automatically positioned and installed by magnetic force. At the same time, the stability of the magnetic connection can ensure that the first clamping arm will not loosen during high-speed movement, avoiding bottle preform falling or equipment failure due to connection failure.

[0018] To allow the second clamping arm to pass through the support plate via a rotating rod, and to adjust the rotational resistance of the rod using the fastening rings at both ends and the throttle handle, the operator can quickly remove the entire second clamping arm from the support plate for replacement and maintenance.

[0019] The second clamping arm is further configured such that: the second clamping arm includes a rotating rod, the upper and lower ends of the rotating rod are threaded with fastening rings, the end of the fastening ring is provided with a handle, the rotating rod is perpendicularly inserted through the surface of the support plate, the bottom end of the rotating rod is sleeved with a rotating arm, and the support plate is provided with a pressure sensor on the side near the rotating arm.

[0020] By adopting the above technical solution, the second clamping arm passes through the support plate through the rotating rod. The fastening rings at the upper and lower ends and the rotating handle can fasten and limit the position of the second clamping arm, and make the rotating arm rotatably contact the pressure sensor. This design allows the operator to loosen or tighten the fastening rings by manually rotating the rotating handle, so that the entire second clamping arm can be quickly and flexibly removed from the support plate for easy replacement and maintenance.

[0021] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the support plate of this utility model;

[0024] Figure 3 This is a schematic diagram of the pushing mechanism of this utility model;

[0025] Figure 4 This is a schematic diagram of the second clamping arm of this utility model;

[0026] Figure 5 This is a schematic diagram of the control flow of the control box of this utility model.

[0027] In the diagram: 1. Support plate; 101. Pressure sensor; 2. Pushing mechanism; 201. Hydraulic cylinder; 202. Piston rod; 203. Mounting nut; 3. Telescopic connecting rod; 301. Cavity; 302. Compression spring; 303. Pressure rod; 304. Magnetic slot; 4. First clamping arm; 401. Magnetic ferrule; 5. First clamping block; 6. Second clamping arm; 601. Rotating rod; 602. Fastening nut; 603. Turning handle; 604. Rotating arm; 7. Second clamping block; 8. Control box. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0029] Please see Figures 1 to 5 The gripping mechanism with a quick-release structure includes a support plate 1. A pushing mechanism 2 is screwed to one side of the support plate 1. A telescopic connecting rod 3 is provided at the tail end of the pushing mechanism 2. A plurality of first clamping arms 4 are sleeved on the outer wall of the telescopic connecting rod 3. A first clamping block 5 is provided on one side of the plurality of first clamping arms 4.

[0030] The surface of the support plate 1 is rotatably connected to one side of several first clamping arms 4, and a second clamping block 7 is provided on the side of the second clamping arm 6 facing the first clamping block 5.

[0031] A control box 8 is provided on one side of the top of the support plate 1.

[0032] In this embodiment, as Figure 1 and Figure 3 As shown, the pushing mechanism 2 includes a hydraulic cylinder 201. The tail end of the hydraulic cylinder 201 is screwed to one side of the support plate 1. The other end of the hydraulic cylinder 201 is provided with a piston rod 202. The tail end of the piston rod 202 is sleeved on the inner wall of the top end of the mounting ring 203. The inner wall of the bottom end of the mounting ring 203 is sleeved on the outer wall of one end of the telescopic connecting rod 3.

[0033] In this embodiment, as Figure 1 and Figure 3 As shown, the inner wall of the telescopic connecting rod 3 located between multiple sets of first clamping blocks 5 and second clamping blocks 7 has several cavities 301. The inner wall of the several cavities 301 is provided with compression springs 302. The side of the several compression springs 302 near the first clamping block 5 is provided with a pressure rod 303. The cavities 301 and the pressure rod 303 form a sliding connection. The outer wall of the telescopic connecting rod 3 is provided with several magnetic slots 304. The insertion direction of the magnetic slots 304 is directly opposite to the mounting screw ring 203.

[0034] In this embodiment, as Figure 3 and Figure 4 As shown, a magnetic insertion ring 401 is provided between the symmetrically arranged first clamping arms 4, and the magnetic slot 304 and the magnetic insertion ring 401 form an adsorption connection.

[0035] In this embodiment, as Figure 2 and Figure 4 As shown, the second clamping arm 6 includes a rotating rod 601. The upper and lower ends of the rotating rod 601 are threaded with fastening rings 602. The end of the fastening rings 602 is provided with a handle 603. The rotating rod 601 is perpendicular to the surface of the support plate 1. The bottom outer wall of the rotating rod 601 is fitted with a rotating arm 604. The support plate 1 is provided with a pressure sensor 101 on the side near the rotating arm 604.

[0036] The computer software involved in the hardware carriers such as pressure sensors in the technical solution is software technology known to those skilled in the art. It is merely applied to the aforementioned hardware carriers. In other words, the computer software portion of the technical solution is an essential technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for the technical problem solved by this application, but it is not a differentiating technical feature or a point of technical improvement. The applicant has not made any technical improvements to the computer software portion involved in the aforementioned related hardware carriers, nor is it a key technical point of the invention.

[0037] Therefore, the "pressure sensor" and "control box" involved in this application are physical functional modules that combine computer software programs or protocols in the prior art with the hardware carrier of this application. The computer software programs involved in these physical functional modules are all technologies known to those skilled in the art and are not improvements of this application. The improvement of this application should be the interaction relationship between the various physical functional modules, that is, the improvement of the overall structure of the gripping mechanism with quick-release structure of this application, so as to solve the corresponding technical problems to be solved by this application.

[0038] The gripping mechanism with a quick-release structure operates as follows:

[0039] When using the equipment for the first time, the operator can start the power supply of the equipment through the control box 8 (model: S7-200). At this time, the control box 8 sends a start command to the hydraulic cylinder 201 (model: SMCCHDKDB20-40) in the pushing mechanism 2. The hydraulic cylinder 201 starts to work and pushes its piston rod 202 outward. Since the tail end of the piston rod 202 is sleeved on the inner wall of the top of the mounting ring 203, and the bottom end of the mounting ring 203 is sleeved on the outer wall of one end of the telescopic connecting rod 3, the extension and retraction of the piston rod 202 will drive the telescopic connecting rod 3 to move back and forth on one side of the support plate 1.

[0040] When it is necessary to grip the PET preform, the hydraulic cylinder 201 will push the piston rod 202 to extend forward, thereby driving the telescopic connecting rod 3 to move forward. At this time, the several first clamping arms 4 sleeved on the outer wall of the telescopic connecting rod 3 will move forward accordingly. Since the first clamping arms 4 are attracted and connected to the magnetic slot 304 on the outer wall of the telescopic connecting rod 3 through the magnetic insertion ring 401, they can ensure that the position is stable during movement. As the telescopic connecting rod 3 moves forward, its first clamping arms 4 will drive the first clamping block 5 to move towards the second clamping block 7.

[0041] When the first clamping block 5 and the second clamping block 7 are aligned with the PET bottle preform, the hydraulic cylinder 201 will continue to push the telescopic connecting rod 3. At this time, the compression spring 302 inside the telescopic connecting rod 3 will contract due to compression, while the pressure rod 303 will slide in the cavity 301, so that the distance between the first clamping block 5 and the second clamping block 7 can be automatically adjusted according to the size of the bottle preform. If the size of the bottle preform is large, the compression amount of the compression spring 302 will increase, driving the pressure rod 303 to push outward, so that the first clamping block 5 and the second clamping block 7 open to a larger angle, ensuring that the bottle preform is clamped.

[0042] During the clamping process, the first clamping arm 4 pushes forward, which will cause the second clamping arm 6 to rotate around the rotating rod 601, so that the tail end of the rotating arm 604 on the outer wall of its top will contact the pressure sensor 101 on the support plate 1. If the first clamping block 5 and the second clamping block 7 clamp the bottle preform correctly, the pressure sensor 101 (model: IPG1) will sense the pressure and send a signal back to the control box 8, indicating that the clamping is successful. If it is not clamped, the pressure sensor 101 will not give a signal, and the operator needs to adjust the position of the bottle preform.

[0043] When the clamping mechanism needs to be replaced or maintained, the operator can control the hydraulic cylinder 201 to retract the piston rod 202 through the control box 8, reset the telescopic connecting rod 3, and then manually disconnect the magnetic plunging ring 401 from the magnetic slot 304. This allows the first clamping arm 4 and the first clamping block 5 to be quickly removed from the telescopic connecting rod 3. For the second clamping arm 6, the fastening screw 602 can be loosened by turning the handle 603, and the angle can be adjusted or the arm can be disassembled for maintenance by turning the rotating rod 601. After the maintenance is completed, the fastening screw 602 can be tightened to fix it.

[0044] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A gripping mechanism with a quick-release structure, including a support plate (1), characterized in that: A pushing mechanism (2) is screwed to one side of the support plate (1). The tail end of the pushing mechanism (2) is provided with a telescopic connecting rod (3). A plurality of first clamping arms (4) are sleeved on the outer wall of the telescopic connecting rod (3). A first clamping block (5) is provided on one side of the plurality of first clamping arms (4). The surface of the support plate (1) is rotatably connected to a plurality of second clamping arms (6) on one side of a plurality of first clamping arms (4), and a second clamping block (7) is provided on the side of the second clamping arm (6) facing the first clamping block (5); A control box (8) is provided on one side of the top of the support plate (1).

2. The gripping mechanism with quick-release structure as described in claim 1, characterized in that: The pushing mechanism (2) includes a hydraulic cylinder (201), the tail end of which is screwed to one side of the support plate (1), and the other end of the hydraulic cylinder (201) is provided with a piston rod (202). The tail end of the piston rod (202) is sleeved on the inner wall of the top end of the mounting ring (203), and the inner wall of the bottom end of the mounting ring (203) is sleeved on the outer wall of one end of the telescopic connecting rod (3).

3. The gripping mechanism with quick-release structure as described in claim 1, characterized in that: The telescopic connecting rod (3) has several cavities (301) on its inner wall between several sets of first clamping blocks (5) and second clamping blocks (7). The inner walls of the several cavities (301) are provided with compression springs (302). The compression springs (302) are provided with pressure rods (303) on the side of the first clamping block (5) near the several compression springs (302). The cavities (301) and pressure rods (303) form a sliding connection. The outer wall of the telescopic connecting rod (3) is provided with several magnetic slots (304). The insertion direction of the magnetic slots (304) is directly opposite to the mounting screw ring (203).

4. The gripping mechanism with quick-release structure as described in claim 1, characterized in that: A magnetic ferrule (401) is provided between the symmetrically arranged first clamping arms (4), and the magnetic slot (304) and the magnetic ferrule (401) form an adsorption connection.

5. The gripping mechanism with quick-release structure as described in claim 1, characterized in that: The second clamping arm (6) includes a rotating rod (601), with a fastening ring (602) threaded to both ends of the rotating rod (601). The end of the fastening ring (602) is provided with a handle (603). The rotating rod (601) passes vertically through the surface of the support plate (1). A rotating arm (604) is sleeved on the outer wall of the bottom end of the rotating rod (601). A pressure sensor (101) is provided on the side of the support plate (1) near the rotating arm (604).

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