Device and method for automatically installing O-ring on valve stem

Abstract

A device and method for automatically installing an O-ring on a valve stem, relating to the technical field of installation devices, the device for automatically installing an O-ring on a valve stem comprises a base, the base comprises a loading assembly, a receiving assembly arranged on one side of the loading assembly, a taking assembly arranged above the receiving assembly, and an installation assembly arranged on one side of the taking assembly. The present invention completes the operation of automatically installing an O-ring on a valve stem by placing an O-ring into the loading assembly for loading, the receiving assembly taking the O-ring in the loading assembly, the taking assembly taking out the O-ring in the receiving assembly, and the installation assembly taking out the O-ring in the receiving assembly and installing it on the valve stem. Therefore, the device can replace manual operation, reduce production costs and improve production efficiency, and at the same time, there is no requirement for the proficiency of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of installation devices, and in particular to a device and method for automatically installing an O-ring on a valve stem. Background Art

[0002] The O-rings on valve stems are usually assembled manually, which is a high-cost, low-efficiency production method, and the assembly quality is somewhat dependent on the worker's proficiency. Summary of the invention

[0003] One of the purposes of the present invention is to avoid the deficiencies in the prior art and provide a valve stem automatic O-ring installation device, which can replace manual operation, reduce production costs and improve production efficiency, and at the same time has no proficiency requirements for operators.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] Provided is a device for automatically installing an O-ring on a valve stem, comprising a base, the base comprising a loading assembly, a receiving assembly arranged on one side of the loading assembly, a taking assembly arranged above the receiving assembly, and an installation assembly arranged on one side of the taking assembly. The O-ring is loaded by placing it into the loading assembly, the receiving assembly takes the O-ring in the loading assembly, the taking assembly takes out the O-ring in the receiving assembly, the installation assembly takes out the O-ring in the receiving assembly and installs it on the valve stem, thereby completing the operation of automatically installing the O-ring on the valve stem. Therefore, the device can replace manual operation, reduce production costs and improve production efficiency, and at the same time, there is no requirement for the proficiency of the operator.

[0006] Furthermore, the feeding assembly includes an O-ring feeding rod, a pressure block sleeved on the O-ring feeding rod, and a stopper assembly arranged below the O-ring feeding rod. The upper end of the O-ring feeding rod is provided with a clamping block, and the clamping block is fixed on the fixed rod. The O-ring feeding rod is used to place the O-ring, and the pressure block can squeeze the O-ring placed on the O-ring feeding rod onto the stopper assembly. The clamping block is used to clamp the O-ring feeding rod. When it is necessary to discharge the material, the O-ring feeding rod is removed from the clamping block, the pressure block is taken out, the O-ring is loaded, the pressure block is inserted, and finally the O-ring feeding rod is clamped with the clamping block. At the same time, the feeding assembly can solve the problem that the O-ring has a strong viscosity on its surface after being greased, which cannot be achieved by the usual vibration plate feeding.

[0007] Furthermore, the stopper assembly includes a stopper base disposed below the O-ring feeding rod, and a spring fixed to one side of the stopper base, the other end of the spring being fixed to a spring fixing block, and the spring fixing block being fixed to the base. The stopper base can stop the O-ring so that the O-ring will not fall out of the O-ring feeding rod, and the spring can enable the stopper base to return to the bottom of the O-ring feeding rod after the external force is removed.

[0008] Furthermore, a limit plate is provided at the lower end of the O-ring feeding rod, the fixing rod is fixed on the limit plate, and the limit plate is fixed to the base through a stud. The limit plate can limit the O-ring feeding rod so that the O-ring feeding rod always remains vertical.

[0009] Furthermore, the material receiving assembly includes a first cylinder and an O-ring base fixed to the movable end of the first cylinder, and the first cylinder is fixed to the base. The first cylinder can drive the O-ring base to push the stopper base to receive the O-ring.

[0010] Furthermore, the material taking assembly includes a first linear drive assembly and a first rotary drive assembly fixed to the movable end of the first linear drive assembly. The first linear drive assembly can drive the first rotary assembly up and down.

[0011] Furthermore, the first linear drive assembly includes a second cylinder and a fixed plate fixed to the fixed end of the second cylinder, and the fixed plate is fixed to the base. The second cylinder can drive the first rotating assembly up and down. The first rotating drive assembly includes a first rotating cylinder fixed to the movable end of the second cylinder, a third cylinder fixed to the rotating end of the first rotating cylinder, a first sleeve fixed to the movable end of the third cylinder, and a first core rod inserted into the first sleeve, the first core rod is fixed to the rotating end of the first rotating cylinder, and the end of the first core rod is set in an outer cone shape. The first rotating cylinder can rotate the third cylinder and the first core rod, and the third cylinder can drive the first sleeve so that the first sleeve and the first core rod can slide axially relative to each other. The end of the first core rod is set in an outer cone shape and can take the O-ring on the O-ring base under the drive of the second cylinder.

[0012] Furthermore, the mounting assembly includes a second linear drive assembly and a second rotary drive assembly fixed to the movable end of the second linear drive assembly. The second linear drive assembly can drive the second rotary drive assembly leftward and rightward.

[0013] Furthermore, the second linear drive assembly includes a fourth cylinder, and the fourth cylinder is fixed on the base. The fourth cylinder can drive the second rotary drive assembly to the left and right. The second rotary drive assembly includes a second rotary cylinder fixed to the movable end of the fourth cylinder, and a fifth cylinder fixed to the rotating end of the second rotary cylinder, and a second sleeve fixed to the movable end of the fifth cylinder, and a second core rod inserted into the second sleeve, the second core rod is fixed to the rotating end of the second rotary cylinder, and the end of the second core rod is set in an inner cone shape. The second rotary cylinder can rotate the fifth cylinder and the second core rod, and the fifth cylinder can drive the second sleeve so that the second sleeve and the second core rod can slide axially relative to each other, and the end of the second core rod is set in an inner cone shape to cooperate with the first core rod.

[0014] A second object of the present invention is to provide a method for automatically installing an O-ring in the above-mentioned valve stem automatic O-ring installation device, comprising the following steps:

[0015] S1: Place the O-ring in the loading assembly;

[0016] S2: The receiving assembly receives the O-ring in the feeding assembly;

[0017] S3: The material taking component takes out the O-ring in the material receiving component;

[0018] S4: Install the assembly to remove the O-ring in the retrieving assembly;

[0019] S5: Install the assembly and install the O-ring on the valve stem.

[0020] Beneficial effects of the present invention: The present invention provides an automatic O-ring installation device for a valve stem, comprising a base, the base comprising a loading assembly, a receiving assembly arranged on one side of the loading assembly, a picking assembly arranged above the receiving assembly, and an installation assembly arranged on one side of the picking assembly. The O-ring is loaded by placing the O-ring into the loading assembly, the receiving assembly picks up the O-ring in the loading assembly, the picking assembly takes out the O-ring in the receiving assembly, the installation assembly takes out the O-ring in the receiving assembly and installs it on the valve stem, thereby completing the operation of automatically installing the O-ring on the valve stem. Therefore, the device can replace manual operation, reduce production costs and improve production efficiency, and at the same time, there is no requirement for the proficiency of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of a valve stem automatic O-ring installation device of the present invention.

[0023] Figure 2 It is a structural schematic diagram of a feeding assembly, a receiving assembly, a taking assembly and a stopping assembly in an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the installation component in the embodiment of the present invention.

[0025] Figure 4 The invention is a schematic diagram of the overall structure of a device for automatically installing an O-ring on a valve stem when a second core rod is butted against a first core rod.

[0026] Figure 5 It is a cross-sectional view of the second core rod of the present invention when it is butted against the first core rod.

[0027] Figure 6 It is a cross-sectional view of an O-ring from a first core rod to a second core rod of the present invention.

[0028] Figure 7 It is a cross-sectional view of the O-ring groove from the second core rod of the present invention to the valve stem.

[0029] The figure includes:

[0030] Base 1, feeding assembly 2, O-ring feeding rod 21, pressure block 22, clamping block 23, fixing rod 24, material receiving assembly 3, first cylinder 31, O-ring base 32, material picking assembly 4, first linear drive assembly 41, second cylinder 411, fixing plate 412, first rotary drive assembly 42, first rotary cylinder 421, third cylinder 422, first sleeve 423, first core rod 424, installation assembly 5, fourth cylinder 51, second rotary drive assembly 52, second rotary cylinder 521, fifth cylinder 522, second sleeve 523, second core rod 524, stop assembly 6, stop base 61, spring 62, spring fixing block 63, limit plate 7, valve stem 8. DETAILED DESCRIPTION

[0031] The present invention is further described in conjunction with the following examples.

[0032] A valve stem automatic O-ring installation device according to this embodiment, such as Figure 1As shown, the base 1 includes a feeding assembly 2, a receiving assembly 3 arranged on one side of the feeding assembly 2, a taking assembly 4 arranged above the receiving assembly 3, and an installation assembly 5 arranged on one side of the taking assembly 4. By placing an O-ring into the feeding assembly 2 for feeding, the receiving assembly 3 takes the O-ring in the feeding assembly 2, the taking assembly 4 takes out the O-ring in the receiving assembly 3, and the installation assembly 5 takes out the O-ring in the receiving assembly 4 and installs it on the valve stem, the operation of automatically installing the O-ring on the valve stem is completed. Therefore, the device can replace manual operation, reduce production costs and improve production efficiency, and at the same time, there is no requirement for the proficiency of the operator.

[0033] like Figure 2 As shown, the feeding assembly 2 includes an O-ring feeding rod 21, a pressing block 22 sleeved on the O-ring feeding rod 21, and a stopper assembly 6 arranged below the O-ring feeding rod 21. The top of the O-ring feeding rod 21 is set in a conical shape, and a clamping block 23 is arranged on the upper end of the O-ring feeding rod 21, and the clamping block 23 is fixed on the fixing rod 24. The top of the O-ring feeding rod 21 is set in a conical shape to facilitate the placement of the O-ring. The pressing block 22 can squeeze the O-ring placed on the O-ring feeding rod 21 onto the stopper assembly 6. The clamping block 23 is used to clamp the O-ring feeding rod 21. When it is necessary to discharge the material, the O-ring feeding rod 21 is removed from the clamping block 23, the pressing block 22 is taken out, the O-ring is loaded, and the pressing block 22 is inserted again, and finally the O-ring feeding rod 21 is clamped by the clamping block 23. At the same time, the feeding assembly 2 can solve the problem that the surface of the O-ring after being greased has strong viscosity, which cannot be achieved by conventional vibration plate feeding.

[0034] The stopper assembly 6 includes a stopper base 61 disposed below the O-ring loading rod 21, and a spring 62 fixed to one side of the stopper base 61, the other end of the spring 62 being fixed to a spring fixing block 63, and the spring fixing block 63 being fixed to the base 1. The stopper base 61 can stop the O-ring so that the O-ring will not fall out of the O-ring loading rod 21, and the spring 62 can enable the stopper base 61 to return to the bottom of the O-ring loading rod 21 after the external force is removed.

[0035] The lower end of the O-ring loading rod 21 is covered with a limit plate 7, the fixing rod 24 is fixed on the limit plate 7, and the limit plate 7 is fixed to the base 1 through a stud. The limit plate 7 can limit the O-ring loading rod 21 so that the O-ring loading rod 21 always remains vertical.

[0036] The receiving assembly 3 includes a first cylinder 31 and an O-ring base 32 fixed to the movable end of the first cylinder 31, and the first cylinder 31 is fixed to the base 1. The first cylinder 31 can drive the O-ring base 32 to push the stop base 61 to receive the O-ring.

[0037] The material taking assembly 4 includes a first linear driving assembly 41 and a first rotating driving assembly 42 fixed to the movable end of the first linear driving assembly 41. The first linear driving assembly 41 can drive the first rotating assembly 42 up and down.

[0038] The first linear drive assembly 41 includes a second cylinder 411 and a fixing plate 412 fixed to a fixing end of the second cylinder 411, and the fixing plate 412 is fixed to the base 1. The second cylinder 411 can drive the first rotating assembly 42 up and down.

[0039] The first rotary drive assembly 42 includes a first rotary cylinder 421 fixed to the movable end of the second cylinder 411, a third cylinder 422 fixed to the rotary end of the first rotary cylinder 421, a first sleeve 423 fixed to the movable end of the third cylinder 422, and a first core rod 424 inserted into the first sleeve 423, the first core rod 424 fixed to the rotary end of the first rotary cylinder 421, and the end of the first core rod 424 is set in an outer cone shape. The first rotary cylinder can rotate the third cylinder 422 and the first core rod 424, the third cylinder 422 can drive the first sleeve 423, so that the first sleeve 423 and the first core rod 424 can slide relative to each other axially, and the end of the first core rod 424 is set in an outer cone shape to be able to take the O-ring on the O-ring base 32 under the drive of the second cylinder 411.

[0040] like Figure 3 As shown, the mounting assembly 5 includes a second linear drive assembly and a second rotary drive assembly 52 fixed to the movable end of the second linear drive assembly. The second linear drive assembly can drive the second rotary drive assembly 52 leftward and rightward.

[0041] The second linear drive assembly includes a fourth cylinder 51, and the fourth cylinder 51 is fixed on the base 1. The fourth cylinder 51 can drive the second rotary drive assembly 52 leftward and rightward.

[0042] The second rotary drive assembly 52 includes a second rotary cylinder 521 fixed to the movable end of the fourth cylinder 51, a fifth cylinder 522 fixed to the rotary end of the second rotary cylinder 521, a second sleeve 523 fixed to the movable end of the fifth cylinder 522, and a second core rod 524 inserted into the second sleeve 523, the second core rod 524 is fixed to the rotary end of the second rotary cylinder 521, and the end of the second core rod 524 is set in an inner cone shape. The second rotary cylinder 521 can rotate the fifth cylinder 522 and the second core rod 524, and the fifth cylinder 522 can drive the second sleeve 523 so that the second sleeve 523 and the second core rod 524 can slide relative to each other axially, and the end of the second core rod 524 is set in an inner cone shape to match the first core rod 424.

[0043] A method for automatically installing an O-ring in a valve stem automatic O-ring installation device according to the present embodiment comprises the following steps:

[0044] S1: First, manually remove the O-ring feeding rod 21 from the clamping block 23, take out the pressing block 22, and then install the O-ring on the O-ring feeding rod 21. One end of the O-ring feeding rod 21 is tapered, and the small end of the tapered shape is smaller than the inner diameter of the O-ring, which is convenient for the O-ring to be loaded from here. After the O-ring is loaded, it is pushed to the other end. When the O-ring on the entire O-ring feeding rod 21 is full, the pressing block 22 is inserted, and finally the O-ring feeding rod 21 is installed back on the clamping block 23. The length of the O-ring feeding rod 21 can be determined according to the production situation. A large number of O-rings are inserted at a time, and the O-rings are replaced every once in a while when they are almost used up.

[0045] S2: There is a stop base 61 at the lower end of the O-ring feeding rod 21 to prevent the O-ring from falling. When the first cylinder 31 extends, it pushes the O-ring base 32 to move to the right, which will push the stop base 61 and reach the bottom of the O-ring feeding rod 21. The O-ring base 32 has a through hole, and there is a step hole above the through hole. The inner diameter of the through hole is smaller than the outer diameter of the O-ring, and the depth of the step hole is equivalent to that of the O-ring. Under the push of the gravity of the pressure block 22, the O-ring falls into the step hole of the O-ring base 32. Then, the first cylinder 31 contracts, driving the O-ring base 32 to move to the left. At the same time, the stop base 61 returns to the bottom of the O-ring feeding rod 21 under the action of the spring 62, preventing the O-ring from continuing to fall.

[0046] S3: After the first cylinder 31 is retracted to the right position, the O-ring base 32 is directly below the first core rod 424, and the second cylinder 411 extends, driving the first rotating cylinder 421 and the first core rod 424 fixed to the first rotating cylinder 421 to move downward. The lower end of the first core rod 424 is tapered, passing through the center of the O-ring and expanding the O-ring. Finally, the O-ring stays on the straight section of the tapered first core rod 424. The size of the straight section of the first core rod 424 is equivalent to the outer diameter of the valve stem part to be finally assembled. The second cylinder 411 retracts, driving the first core rod 424 to return.

[0047] S4: The first rotating cylinder 421 rotates, driving the first core rod 424 to rotate and reach a horizontal state. At this time, the fourth cylinder 51 extends, driving the second rotating cylinder 521 and the second core rod 524 and the fifth cylinder 522 fixed to the second rotating cylinder 521 to move to the right. The second core rod 524 is docked with the first core rod 424, as shown in FIG. Figure 4 ,like Figure 5 One end of the second core rod 524 is in an inner cone shape, which matches the outer cone shape of the first core rod 424. The third cylinder 422 extends, pushing 423 to move leftward, driving the O-ring from the first core rod 424 to the second core rod 524, as shown. Figure 6 shown.

[0048] S5: The fourth cylinder 51 contracts, and the second core rod 524 is separated from the first core rod 424. The second rotary cylinder 521 rotates 180° and docks with the valve stem 8 held by the manipulator. The fifth cylinder 522 extends, driving the second sleeve 523 to move, pushing the O-ring into the O-ring groove of the valve stem 8, and completing the assembly. Figure 7 shown.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A valve stem automatic O-ring installation device, comprising a base, characterized in that: The base includes a feeding assembly, a receiving assembly arranged on one side of the feeding assembly, a taking assembly arranged above the receiving assembly, and a mounting assembly arranged on one side of the taking assembly; The material picking assembly includes a first linear drive assembly and a first rotary drive assembly fixed to the movable end of the first linear drive assembly; the first linear drive assembly includes a second cylinder and a fixed plate fixed to the fixed end of the second cylinder, and the fixed plate is fixed to the base; the first rotary drive assembly includes a first rotary cylinder fixed to the movable end of the second cylinder, a third cylinder fixed to the rotating end of the first rotary cylinder, a first sleeve fixed to the movable end of the third cylinder, and a first core rod inserted into the first sleeve, the first core rod is fixed to the rotating end of the first rotary cylinder, and the end of the first core rod is arranged in an outer cone shape; The mounting assembly includes a second linear drive assembly and a second rotary drive assembly fixed to the movable end of the second linear drive assembly; the second linear drive assembly includes a fourth cylinder, and the fourth cylinder is fixed to the base; the second rotary drive assembly includes a second rotary cylinder fixed to the movable end of the fourth cylinder, a fifth cylinder fixed to the rotary end of the second rotary cylinder, a second sleeve fixed to the movable end of the fifth cylinder, and a second core rod inserted into the second sleeve, and the second core rod is fixed to the rotary end of the second rotary cylinder; the second rotary cylinder can rotate the fifth cylinder and the second core rod, and the fifth cylinder can drive the second sleeve so that the second sleeve and the second core rod can slide axially relative to each other, and the end of the second core rod is arranged in an inner cone shape to cooperate with the first core rod; The third cylinder extends out and can drive the O-ring from the first core rod to the second core rod.

2. The automatic O-ring installation device for valve stem according to claim 1, characterized in that: The feeding assembly includes an O-ring feeding rod, a pressure block sleeved on the O-ring feeding rod, and a stopper assembly arranged below the O-ring feeding rod. A clamping block is arranged at the upper end of the O-ring feeding rod, and the clamping block is fixed on the fixing rod.

3. The automatic O-ring installation device for valve stem according to claim 2, characterized in that: The stopper assembly comprises a stopper base arranged below the O-ring feeding rod, a spring fixed to one side of the stopper base, the other end of the spring is fixed to a spring fixing block, and the spring fixing block is fixed to the base.

4. The automatic O-ring installation device for valve stem according to claim 2, characterized in that: The lower end cover of the O-ring feeding rod is provided with a limit plate, the fixing rod is fixed on the limit plate, and the limit plate is fixed on the base through a stud.

5. The automatic O-ring installation device for valve stem according to claim 1, characterized in that: The material receiving assembly comprises a first cylinder and an O-ring base fixed to the movable end of the first cylinder, and the first cylinder is fixed on the base.

6. A method for automatically installing an O-ring for a valve stem according to any one of claims 1 to 5, characterized in that : Includes the following steps: S1: Place the O-ring in the loading assembly; S2: The receiving assembly receives the O-ring in the feeding assembly; S3: The material taking component takes out the O-ring in the material receiving component; S4: Install the assembly to remove the O-ring in the retrieving assembly; S5: Install the assembly and install the O-ring on the valve stem.

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