Metering shell grabbing and releasing mechanism

Abstract

The utility model discloses a metering shell grabbing and releasing mechanism which comprises a grabbing hand assembly, the grabbing hand assembly comprises a connecting plate and a floating plate which are arranged in an up-down opposite mode, a metering shell suction cup and a restraining structure matched with the outline of a metering shell are fixedly arranged at the bottom of the floating plate, and the connecting plate is in sliding fit with the floating plate. And a locking mechanism is arranged between the two. By the adoption of the scheme, the prepressing device is mainly used for the prepressing process of the metering shell on the gas meter movement body, it can be guaranteed that the grabbing and placing position is accurate, the press-fitting floating requirement can be met, the situation that the metering shell deforms due to hard contact buckling can be avoided or relieved, and it is guaranteed that a finished product has good appearance quality.

Description

Technical Field

[0001] This utility model belongs to the field of gas meter manufacturing equipment, and specifically relates to a metering shell gripping and releasing mechanism. Background Technology

[0002] The meter housing is one of the important components of a diaphragm gas meter. A diaphragm gas meter has two meter housings, one on the front and one on the back. During the assembly process, a special gripping mechanism is needed to pick up the meter housing from the preparation station and place it onto the main body. Common gripping mechanisms use a suction cup structure, that is, a suction cup is used to lift the meter housing and then place it onto the main body. For example, the patent with patent number "CN216126797U" and title "Diaphragm Gas Meter Meter Housing Sealing Device" discloses the following: "The meter housing robot mainly includes a robot and a suction and pressing device with the robot's execution end. The suction and pressing device includes a mounting plate and pressure rods distributed at the four corners of the mounting plate. The positions of the pressure rods are adapted to the four corners of the meter housing. A negative pressure suction head is provided in the middle of the mounting plate, and the negative pressure suction head is connected to a negative pressure generation control device."

[0003] The applicant found in the research that the function of this type of gripping and releasing mechanism is relatively simple. On the production line, it can only basically place the metering shell in place, and its positional accuracy is relatively poor. On the other hand, if the metering shell needs to be pre-pressed, this type of gripping and releasing mechanism cannot adapt to floating operation, which can easily lead to the misalignment of the metering shell. Utility Model Content

[0004] In view of this, the present invention provides a metering shell gripping and releasing mechanism to solve the problems of single function and poor positioning effect of the existing gripping and releasing mechanism.

[0005] The technical solution is as follows:

[0006] A metering shell gripping and releasing mechanism includes a gripper assembly. The key feature of this mechanism is that the gripper assembly comprises a connecting plate and a floating plate arranged vertically opposite each other. A metering shell suction cup is fixed to the bottom of the floating plate, along with a constraint structure adapted to the contour of the metering shell. The connecting plate and the floating plate are slidably engaged, and a locking mechanism is provided between them. Using this solution, during the gripping and releasing of the metering shell, the locking mechanism locks the connecting plate and the floating plate, ensuring gripping stability. During pre-pressing, the locking mechanism unlocks, allowing the floating plate and constraint structure to have a certain floating offset range. This avoids or mitigates deformation of the metering shell caused by hard contact, ensuring a better appearance quality of the finished product.

[0007] Preferably, the locking mechanism includes a locking cylinder and a locking seat respectively disposed on the floating plate and the connecting plate, wherein the piston rod end of the locking cylinder has a locking tongue that engages with the locking seat.

[0008] Preferably, the locking seat has a V-shaped groove. This design is easy to implement and has a low cost.

[0009] Preferably, the constraint structure includes straightening plates disposed on the four sides corresponding to the protrusion of the metering shell, and the lower end of the straightening plate has a conforming inclined surface adapted to the side of the protrusion of the metering shell. Using the above scheme, the upward direction of the metering shell can be limited.

[0010] Preferably, at least two diagonally opposite positioning posts have limiting heads at their bottoms. This design further restricts the orientation of the metering shell.

[0011] Preferably, the connecting plate includes a robotic arm, and its top has a connecting portion for connecting the free end of the robotic arm. This design enables the rapid connection and use of the robotic arm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The metering shell gripping and releasing mechanism provided by this utility model is mainly used for the pre-pressing process of the metering shell on the gas meter core. It can not only ensure the accurate gripping and releasing position, but also meet the pressure installation floating requirements. It can avoid or alleviate the deformation of the metering shell caused by hard contact and ensure that the finished product has a good appearance quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Bottom structure diagram;

[0016] Figure 3 This is a schematic diagram of the utility model in use. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] refer to Figures 1 to 3 The metering shell gripping mechanism shown in the figure mainly includes a metering shell gripper assembly 820. As shown in the figure, the metering shell gripper assembly 820 includes a connecting plate 821 and a floating plate 822 arranged vertically opposite each other. A metering shell suction cup 823 is fixed at the bottom of the floating plate 822, as well as a constraint structure adapted to the contour of the metering shell. The connecting plate 821 and the floating plate 822 are slidably engaged and can slide horizontally. A locking mechanism 830 is provided between the two, which can lock the connecting plate 821 and the floating plate 822.

[0019] In this embodiment, the locking mechanism 830 includes a locking cylinder 831 and a locking seat 832 respectively disposed on the floating plate 822 and the connecting plate 821. The piston rod of the locking cylinder 831 has a locking tongue 833 that engages with the locking seat 832. When the piston rod of the locking cylinder 831 is pushed out, the locking tongue 833 can engage with the locking seat 832, thereby achieving the purpose of locking the connecting plate 821 and the floating plate 822. In this embodiment, the locking seat 832 has a V-shaped groove. Of course, in addition to the above result, a locking method such as locking pin and pin hole can also be used.

[0020] The constraint structure mainly includes a straightening plate 824 provided on the four sides of the corresponding metering shell protrusion. The lower end of the straightening plate 824 has a fitting slope adapted to the side of the metering shell protrusion. To further improve the gripping and releasing stability, in another embodiment, the constraint structure also includes positioning posts 825 provided on the four corner through holes of the metering shell. When the metering shell suction cup 823 grips the metering shell, the lower end face of the positioning post 825 abuts against the upper surface of the outer edge of the metering shell. On this basis, at least two diagonally arranged positioning posts 825 are provided with limiting heads 8250 at their lower ends. The size of the limiting heads 8250 is adapted to the four corner through holes of the metering shell. In this way, when the metering shell is gripped, the limiting heads 8250 can extend into the corresponding through holes to further limit the posture of the metering shell. It should be noted that in order to improve the positioning effect and prevent interference between the metering shell and the movement body when placing it, the lower end of the positioning post 825 has clearance countersunk holes that are adapted to the suspension points at the four corners of the movement body. If the lower end of the positioning post is provided with a limit head 8250, the limit head 8250 also has clearance countersunk holes that are adapted to the suspension points. That is, the outer diameter of the limit head 8250 is consistent with the through holes at the four corners of the metering shell, and the inner diameter is consistent with the size of the suspension point.

[0021] Typically, the metering shell gripping mechanism of this application also includes a robotic arm 810, that is, the metering shell gripper assembly 820 is used in conjunction with the robotic arm 810, as shown in the figure, the top of the connecting plate 821 has a connecting part 826 for connecting the free end of the robotic arm 810.

[0022] refer to Figures 1 to 3The metering shell gripping and placing mechanism shown is mainly used for pre-compression of the metering shell. As shown in the figure, the metering shell gripping and placing mechanism is set on the workbench. A core component transport line L is provided on one side of the workbench. The core component transport line L has a placement seat N and a pre-compression station. The placement seat N can be fixed in the pre-compression station under the action of the corresponding placement seat fixing structure. The core body can be fixedly placed on the placement seat. The metering shell gripping and placing mechanism can grab the metering shell and fasten it to the core body with the concave surface facing down. During the gripping and placing of the metering shell, the locking mechanism locks the connecting plate and the floating plate to each other, which can fully ensure the gripping stability and the accuracy of the placement position. During the pre-compression process, the locking mechanism unlocks, and the floating plate together with the constraint structure has a certain floating offset range, which can avoid or alleviate the deformation of the metering shell caused by hard contact and ensure that the finished product has a good appearance quality.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A metrology pod gripper mechanism comprising a gripper assembly (820), characterized by: The gripper assembly (820) comprises a connecting plate (821) and a floating plate (822) arranged vertically, the bottom of the floating plate (822) is fixedly provided with a meter shell suction disc (823), and a constraint structure is provided in the contour of the meter shell, the connecting plate (821) and the floating plate (822) are in sliding fit, and a locking mechanism (830) is arranged between the connecting plate (821) and the floating plate (822).

2. A metrology pod handling mechanism according to claim 1, wherein: The locking mechanism (830) comprises a locking cylinder (831) and a locking seat (832) arranged on the floating plate (822) and the connecting plate (821) respectively, the piston rod head end of the locking cylinder (831) is provided with a lock tongue (833) which is engaged with the locking seat (832).

3. A meter housing handling mechanism according to claim 2, characterized in that: The locking seat (832) has a V-shaped clamping groove.

4. A meter housing handling mechanism according to any one of claims 1 to 3, characterized in that: The constraint structure comprises righting plates (824) arranged on four sides of the protruding part of the meter shell, and the lower end of the righting plate (824) has a fitting inclined surface which is adapted to the side surface of the protruding part of the meter shell.

5. A meter housing handling mechanism according to any one of claims 1 to 3, characterized in that: The constraint structure comprises positioning columns (825) arranged corresponding to the through holes in the four corners of the meter shell, when the meter shell suction disc (823) grabs the meter shell, the end surface of the positioning column (825) is in abutment with the upper surface of the outer edge of the meter shell.

6. A meter housing gripping mechanism according to claim 5, wherein: The bottom of at least two diagonal positioning columns (825) is provided with a limiting head (8250).

7. A metrology pod handling mechanism according to any one of claims 1 to 3, wherein: The top of the connecting plate (821) is provided with a connecting part (826) for connecting the free end of the mechanical arm (810).

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