Valve rod sealing ring assembling machine

Abstract

The utility model discloses a valve rod sealing ring assembling machine. The valve rod sealing ring assembling machine comprises a machine box, two sets of vibration disc type sealing ring feeding devices, a sealing ring press-fitting device, a valve rod fixing device and a transplanting device. The sealing ring press-fitting device achieves accurate positioning and press-fitting through a vertical frame, a guide rail bottom plate, a lead screw transmission pair, a driving motor and the like. The valve rod fixing device is flexibly adjusted and fixed according to the size of the valve rod by means of an adjustable clamp; the transplanting device accurately transfers the valve rods through a transplanting mechanical arm, a rotating air cylinder and a clamping jaw air cylinder. The case is provided with a finished product storage box, and the transplanting underframe is provided with a valve rod raw material box. The assembling machine is high in automation degree, capable of greatly improving the assembling efficiency and guaranteeing the assembling precision, suitable for valve rods and sealing rings of various specifications, capable of reducing the production cost and convenient and safe to operate.

Description

Technical Field

[0001] This utility model relates to the field of valve manufacturing equipment technology, specifically a valve stem sealing ring assembly machine. Background Technology

[0002] In valve manufacturing, the assembly of the valve stem seal is a crucial step. Traditionally, valve stem seal assembly is mostly done manually, which is not only inefficient but also prone to assembly errors, leading to improper seal assembly and affecting the valve's sealing performance and overall quality. Furthermore, manual assembly is labor-intensive and costly, making it unsuitable for large-scale production. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem this utility model aims to solve is that the traditional valve stem sealing ring assembly method mostly relies on manual labor, which is not only inefficient, but also prone to assembly deviations due to manual operation, resulting in improper assembly of the sealing ring, which affects the sealing performance and overall quality of the valve.

[0005] (II) Technical Solution

[0006] To solve the above problems, this utility model provides the following technical solution:

[0007] A valve stem sealing ring assembly machine includes a machine housing, a sealing ring feeding device, a sealing ring pressing device, a valve stem fixing device, and a transfer device;

[0008] The sealing ring pressing device is located on the upper surface of the chassis and includes two symmetrically arranged uprights, a guide rail base plate, a set of first linear guide rail pairs, a lead screw drive pair, a drive motor connected to the lead screw on the lead screw drive pair, a connecting base plate, a second linear guide rail pair, a cylinder mounting plate, and a set of sealing ring assembly cylinders. The two uprights are inherently connected to the chassis and to both ends of the guide rail base plate. The first linear guide rail pair is located on the guide rail base plate, and its slide is inherently connected to the connecting base plate. The second linear guide rail pair is vertically located on the connecting base plate, and its slider is inherently connected to the cylinder mounting plate. The two sealing ring assembly cylinders are located on the cylinder mounting plate. The guide rail base plate is also connected to the lead screw nut seat on the lead screw drive pair. The cylinder body of the lifting cylinder is connected to the connecting base plate, and its telescopic rod is connected to the cylinder mounting plate.

[0009] Furthermore, the sealing ring feeding device is provided in two sets, both of which are located in the machine box, and the sealing ring feeding device is a vibratory feeder feeding device.

[0010] Furthermore, the valve stem fixing device includes a base frame and two adjustable clamps mounted on the base frame.

[0011] Furthermore, the adjustable clamp includes a cylindrical base, three connecting blocks, and three limiting blocks. The cylindrical base is provided with a sliding groove that matches the lower part of the connecting block, and the lower part of the connecting block can move in the sliding groove. The connecting block is connected to the cylindrical base by screws. The upper part of the connecting block is provided with a mounting groove that connects to the limiting block, and the lower part of the limiting block is provided with a connecting plug that matches the mounting groove.

[0012] Furthermore, the limiting block has an arc-shaped cut on the side near the axis of the cylindrical base.

[0013] Furthermore, the transplanting device includes a transplanting base frame, a transplanting robot, a rotary cylinder, and a gripper cylinder with grippers. The transplanting robot is mounted on the transplanting base frame, the cylinder body of the rotary cylinder is connected to the transplanting robot, and the output shaft of the rotary cylinder is connected to the cylinder body of the gripper cylinder.

[0014] Furthermore, the chassis is equipped with a replaceable finished product storage box, and the transplanting base is equipped with a raw material box for placing valve stems for installing sealing rings.

[0015] (III) Beneficial Effects

[0016] The beneficial effects of this utility model are:

[0017] There is no need for manual assembly of each sealing ring and valve stem. Compared to traditional manual assembly, this significantly reduces the assembly time for a single valve stem sealing ring, greatly improves production efficiency, and can meet the urgent capacity requirements of modern large-scale valve manufacturing industries. Attached image description:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the sealing ring pressing device of this utility model;

[0020] Figure 3 This is a schematic diagram of the adjustable clamp of this utility model;

[0021] Figure 4 This is an exploded view of the adjustable clamp of this utility model;

[0022] Figure 5 This is a schematic diagram of the transplanting device of this utility model.

[0023] In the diagram, the markings are: 1-Chassis, 2-Sealing ring feeding device, 3-Sealing ring pressing device, 301-Upright frame, 302-Guide rail base plate, 303-First linear guide rail pair, 304-Screw drive pair, 305-Drive motor, 306-Connecting base plate, 307-Second linear guide rail pair, 308-Cylinder mounting plate, 309-Sealing ring assembly cylinder, 310-Lifting cylinder, 4-Valve stem fixing device, 4 01-Base frame, 402-Adjustable clamp, 402a-Columnar base, 402b-Connecting block, 402c-Limiting block, 402d-Slide groove, 402e-Mounting groove, 402f-Connecting insert, 402g-Arc-shaped cut, 5-Transplanting device, 501-Transplanting base frame, 502-Transplanting robot, 503-Rotary cylinder, 504-Gripper cylinder, 6-Finished product storage box, 7-Valve stem raw material box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Please see Figures 1-5 The valve stem sealing ring assembly machine shown includes a machine housing 1, a sealing ring feeding device 2, a sealing ring pressing device 3, a valve stem fixing device 4, and a transplanting device 5.

[0027] The sealing ring pressing device 3 is located on the upper end face of the housing 1 and includes two uprights 301 arranged symmetrically on the left and right, a guide rail base plate 302, a set of first linear guide rail pairs 303, a lead screw drive pair 304, a drive motor 305 connected to the lead screw on the lead screw drive pair 304, a connecting base plate 306, a second linear guide rail pair 307, a cylinder mounting plate 308, and a set of sealing ring assembly cylinders 309.

[0028] The two uprights 301 are inherently connected to the chassis 1 and to both ends of the guide rail base plate 302 respectively, providing a stable support structure for the entire sealing ring pressing device 3.

[0029] A set of first linear guide rail pairs 303 is provided on the guide rail base plate 302, and its slide is inherently connected to the connecting base plate 306, so that the connecting base plate 306 can move horizontally under the guidance of the first linear guide rail pairs 303.

[0030] The guide rail base plate 302 is also connected to the lead screw nut seat on the lead screw transmission pair 303. The lead screw transmission pair 304 cooperates with the drive motor 305. The drive motor 305 drives the lead screw to rotate, thereby driving the connecting base plate 306 to move linearly along the first linear guide rail pair 303, realizing the horizontal position adjustment of the pressing device.

[0031] The second linear guide pair 307 is vertically mounted on the connecting base plate 306, and its slider is inherently connected to the cylinder mounting plate 308. The cylinder mounting plate 308 can move vertically under the guidance of the second linear guide pair 307.

[0032] Two sealing ring assembly cylinders 309 are mounted on cylinder mounting plate 308 and are used for press-fitting the sealing rings.

[0033] The sealing ring feeding device 2 has two sets, both located in the housing 1. The sealing ring feeding device 2 is a vibratory feeder feeding device. The vibratory feeder feeding device can arrange the sealing rings in an orderly manner and transport them to the designated position through vibration, which facilitates subsequent assembly.

[0034] The cylinder body of the lifting cylinder 310 is connected to the connecting base plate 306, and its telescopic rod is connected to the cylinder mounting plate 308. It is used to drive the vertical movement of the two sealing ring assembly cylinders 309, which are mounted on the connecting base plate 306.

[0035] The valve stem fixing device 4 includes a base frame 401 and two adjustable clamps 402 mounted on the base frame 401. Each adjustable clamp 402 includes a cylindrical base 402a, three connecting blocks 402b, and three limiting blocks 402c. The cylindrical base 402a has a sliding groove 402d that matches the lower part of the connecting block 402b, allowing the lower part of the connecting block 402b to move within the sliding groove 402d. The connecting block 402b is connected to the cylindrical base 402a by screws. By adjusting the position of the connecting block 402b in the sliding groove 402d, valve stems of different sizes can be accommodated. The upper part of the connecting block 402b has a mounting groove 402e that connects to the limiting blocks 402c, and the lower part of the limiting blocks 402c has a connecting insert 402f that matches the mounting groove 402e, facilitating the installation and removal of the limiting blocks 402c. The limiting block 402c has an arc-shaped cutout 402g on one side near the axis of the cylindrical base 402a. This arc-shaped cutout 402g can better fit the shape of the valve stem and improve the fixing effect of the valve stem.

[0036] The transplanting device 5 includes a transplanting base frame 501, a transplanting robot arm 502, a rotary cylinder 503, and a gripper cylinder 504 with grippers. The transplanting robot arm 502 is mounted on the transplanting base frame 501 and can achieve multi-degree-of-freedom movement, used to transfer the valve stem between different work positions. The cylinder body of the rotary cylinder 503 is connected to the transplanting robot arm 502, and the output shaft of the rotary cylinder 503 is connected to the cylinder body of the gripper cylinder 504. The rotary cylinder 503 can drive the gripper cylinder 504 to rotate in order to adjust the angle of the valve stem. The grippers of the gripper cylinder 504 are used to grasp and release the valve stem.

[0037] The chassis 1 is equipped with a replaceable finished product storage box 6 for storing assembled valve stems with sealing rings. The transfer base 501 is equipped with a valve stem material box 7 for placing valve stems without sealing rings, providing valve stem materials for the assembly machine.

[0038] Working principle:

[0039] The operator places the valve stem without the sealing ring into the valve stem material box 7 on the transplanting base frame 501, and at the same time installs the replaceable finished product storage box 6 on the machine casing 1. The transplanting robot arm 502 of the equipment transplanting device 5 is started, which drives the gripper cylinder 504 to move above the valve stem material box 7. The gripper cylinder 504 controls the gripper to grab the valve stem.

[0040] The rotary cylinder 503 adjusts the valve stem angle, and the transfer robot 502 moves the valve stem above the valve stem fixing device 4 and places it into the adjustable clamp 402.

[0041] Prior to this, the operator can adjust the position of the connecting block 402b of the adjustable clamp 402 and fix it with screws to ensure that the valve stem is firmly fixed.

[0042] The vibratory feeders of the two sets of sealing ring feeding devices 2 start working, and the vibration arranges the sealing rings in an orderly manner and transports them to the designated feeding position.

[0043] The drive motor 305 drives the lead screw transmission pair 304, causing the connecting base plate 306 to move on the first linear guide pair 303, thereby adjusting the horizontal position of the pressing device.

[0044] Under the guidance of the second linear guide pair 307 and driven by the lifting cylinder 310, the cylinder mounting plate 308 descends, and the two sealing ring assembly cylinders 309 grab the sealing rings and press them onto the designated positions on the valve stem.

[0045] After the pressing is completed, the gripper cylinder 504 of the transplanting device 5 grabs the assembled valve stem again, and the transplanting robot 502 moves it above the finished product storage box 6 on the chassis 1. The gripper cylinder 504 releases the valve stem, allowing the finished product to fall into the finished product storage box 6.

[0046] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve stem packing ring assembly machine characterized by: It includes a chassis (1), a sealing ring feeding device (2), a sealing ring pressing device (3), a valve stem fixing device (4), and a transplanting device (5); The sealing ring pressing device (3) is located on the upper surface of the chassis (1) and includes two symmetrically arranged uprights (301), a guide rail base plate (302), a set of first linear guide rail pairs (303), a screw drive pair (304), a drive motor (305) connected to the screw on the screw drive pair (304), a connecting base plate (306), a second linear guide rail pair (307), a cylinder mounting plate (308), a set of sealing ring assembly cylinders (309) and lifting cylinders (310). The two uprights (301) are inherently connected to the chassis (1) and are inherently connected to both ends of the guide rail base plate (302). The first linear guide pair (303) is mounted on the guide base plate (302), and its slide is inherently connected to the connecting base plate (306). The second linear guide pair (307) is vertically mounted on the connecting base plate (306), and its slider is inherently connected to the cylinder mounting plate (308). The two sealing ring assembly cylinders (309) are mounted on the cylinder mounting plate (308). The guide base plate (302) is also connected to the screw nut seat on the screw drive pair (304). The cylinder body of the lifting cylinder (310) is connected to the connecting base plate (306), and its telescopic rod is connected to the cylinder mounting plate (308).

2. The valve stem packing ring assembly machine of claim 1, wherein: The sealing ring feeding device (2) has two sets, both of which are located in the machine box (1). The sealing ring feeding device (2) is a vibratory feeder feeding device.

3. The valve stem packing ring assembly machine of claim 1, wherein: The valve stem fixing device (4) includes a base frame (401) and two adjustable clamps (402) mounted on the base frame (401).

4. The valve stem seal assembly machine of claim 3, wherein: The adjustable clamp (402) includes a cylindrical base (402a), three connecting blocks (402b) and three limiting blocks (402c). The cylindrical base (402a) is provided with a sliding groove (402d) that matches the lower part of the connecting block (402b), and the lower part of the connecting block (402b) can move in the sliding groove (402d). The connecting block (402b) is connected to the cylindrical base (402a) by screws. The upper part of the connecting block (402b) is provided with a mounting groove (402e) that connects to the limiting block (402c), and the lower part of the limiting block (402c) is provided with a connecting plug (402f) that matches the mounting groove (402e).

5. The valve stem seal assembly machine of claim 4, wherein: The limiting block (402c) has an arc-shaped cut (402g) on ​​the side near the axis of the cylindrical base (402a).

6. The valve stem packing ring assembly machine of claim 1, wherein: The transplanting device (5) includes a transplanting base frame (501), a transplanting robot (502), a rotary cylinder (503), and a gripper cylinder (504) with grippers. The transplanting robot (502) is mounted on the transplanting base frame (501). The cylinder body of the rotary cylinder (503) is connected to the transplanting robot (502), and the output shaft of the rotary cylinder (503) is connected to the cylinder body of the gripper cylinder (504).

7. The valve stem seal assembly machine of claim 6, wherein: The chassis (1) is provided with a replaceable finished product storage box (6), and the transplanting base frame (501) is provided with a valve stem raw material box (7) for placing the valve stem for installing the sealing ring.

Images