Fuel gas cut-off valve press-fitting machine

Abstract

The utility model discloses a fuel gas stop valve pressing machine. Comprising a positioning tool used for placing and positioning a valve seat, a rotary workbench used for driving the positioning tool to rotate, an extrusion die used for extruding a valve cover, a pressing column used for pressing the valve cover, a connecting base used for installing the extrusion die and the pressing column, a driving mechanism used for driving the connecting base and an installing frame used for installing the driving mechanism. A plurality of positioning tools are arranged on the rotary working table, the positioning tools are uniformly distributed on the rotary working table by taking the rotary working table as the center, the connecting seat is mounted at the output end of the driving mechanism, the pressing column is positioned in the center of the extrusion die, and the pressing column can deform under stress to reduce the height of the pressing column. The fuel gas cut-off valve pressing machine can assemble the valve cover and the valve seat at a time.

Description

Technical Field

[0001] This utility model relates to the field of gas shut-off valve processing and manufacturing technology, and in particular to a gas shut-off valve press-fitting machine. Background Technology

[0002] Existing valve seats and covers are usually fastened with screws, typically requiring four screws. Each time, a worker needs to tighten the screws four times to fix the valve cover to the valve seat, resulting in a long assembly time for a single valve. In addition, drilling is required when machining the valve seat and cover, which takes extra time, increasing the machining time for the valve and cover, and thus increasing the overall manufacturing time of the valve. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas shut-off valve press-fitting machine that can complete the assembly in one press-fitting operation.

[0004] To solve the above problems, this utility model provides a gas shut-off valve press-fitting machine. The gas shut-off valve press-fitting machine includes a positioning fixture for placing and positioning the valve seat, a rotary worktable for driving the positioning fixture to rotate, an extrusion die for extruding the valve cover, a pressing column for pressing the valve cover, a connecting seat for installing the extrusion die and the pressing column, a drive mechanism for driving the connecting seat, and a mounting bracket for installing the drive mechanism. Multiple positioning fixtures are provided on the rotary worktable, and the positioning fixtures are evenly distributed on the rotary worktable with the center of the rotary worktable. The connecting seat is installed at the output end of the drive mechanism. The pressing column is located at the center of the extrusion die, and the pressing column can be deformed under force to reduce its height.

[0005] Furthermore, the extrusion die has a guide groove, the sidewall of the guide groove is inclined, the bottom of the guide groove smoothly transitions to the sidewall, and the bottom of the guide groove is provided with a clearance hole to avoid the pressing column.

[0006] Furthermore, the pressing column is made of rubber.

[0007] Furthermore, the connecting seat is provided with a first mounting hole, and the pressing column is fixed in the first mounting hole by an interference fit.

[0008] Furthermore, the extrusion die extends upward to form a positioning part, the connecting seat is provided with an upper positioning groove, the positioning part is located in the upper positioning groove, and the first mounting hole is located at the bottom of the upper positioning groove.

[0009] Furthermore, the positioning fixture is provided with a positioning hole, and the connecting seat is equipped with a positioning post, the positioning hole and the positioning post cooperating.

[0010] Furthermore, the positioning fixture is provided with a workpiece positioning groove that is adapted to the shape of the valve seat.

[0011] Furthermore, the drive mechanism is connected to the connecting seat via a mounting plate, the mounting plate is provided with guide posts, and the mounting bracket is provided with guide holes that cooperate with the guide posts.

[0012] Furthermore, a connecting post is installed on the connecting seat, a connecting sleeve is provided on the mounting plate, the connecting sleeve is fitted onto the connecting post, the connecting sleeve is provided with a screw hole, and a locking screw for locking the connecting post is provided in the screw hole.

[0013] Furthermore, the positioning fixture is provided with a limiting component for restricting the downward movement of the clamping mold. The limiting component is a screw, which is screwed onto the positioning fixture.

[0014] This utility model gas shut-off valve press-fitting machine uses a positioning fixture to position the valve seat. The drive mechanism drives the connecting seat to move down, which in turn moves the pressing column and the extrusion die down. During the downward movement, the pressing column first contacts the valve cover, pressing the valve cover tightly onto the valve seat. Then the extrusion die contacts the valve seat and extrudes the retaining wall on the valve seat, causing the deformed valve part to be wrapped around it, thus completing the assembly. The assembly can be completed in one extrusion, and the assembly speed is fast. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the valve seat before it is compressed.

[0016] Figure 2 This is a schematic diagram of a preferred embodiment of the gas shut-off valve press-fitting machine of this utility model.

[0017] Figure 3 This is a schematic diagram of the positioning fixture installed on the rotary table.

[0018] Figure 4 It is a cross-sectional view of the positioning fixture and the corresponding connecting seat on which the extrusion die and pressing column are installed.

[0019] Figure 5 This is a schematic diagram of the extrusion die.

[0020] Figure 6 This is a structural diagram of the positioning fixture.

[0021] Figure 7 This is a schematic diagram of the connector.

[0022] Figure 8 This is a schematic diagram of the structure when the pressing column contacts the valve cover during the extrusion process.

[0023] Figure 9 This is a schematic diagram of the structure after the valve cover and valve seat are assembled.

[0024] The meanings of the labels in the attached diagram are as follows:

[0025] Valve seat 11, valve cover 12, enclosure 13, valve stem 14;

[0026] Positioning fixture 2, workpiece positioning groove 21, limiting component 22, positioning hole 23, rotary worktable 3, rotary table 31, rotary driver 32, extrusion die 4, guide groove 41, clearance hole 42, positioning part 43, pressing column 5, connecting seat 6, upper positioning groove 61, first mounting hole 62, second mounting hole 63, third mounting hole 64, drive mechanism 7, mounting bracket 8, column 81, crossbeam 82, top plate 83, mounting plate 84, connecting sleeve 85, guide column 91, connecting column 92, locking screw 93, positioning column 94. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the valve seat 11 has a retaining wall 13. The gas shut-off valve press machine of this utility model squeezes and deforms the retaining wall 13, bending it toward the center of the valve seat 11 to fix the valve cover 12.

[0029] like Figures 2 to 4 As shown, a preferred embodiment of the gas shut-off valve press-fitting machine of this utility model includes a positioning fixture 2, a rotary worktable 3, an extrusion die 4, a pressing column 5, a connecting seat 6, a drive mechanism 7, and a mounting frame 8. The positioning fixture 2 is used to place and position the valve seat 11. The positioning fixture 2 is mounted on the rotary worktable 3, and six positioning fixtures 2 are provided on the rotary worktable 3. The positioning fixtures 2 are evenly distributed on the rotary worktable 3 with the center of the rotary worktable 3. In other embodiments, the positioning fixtures 2 can be increased or decreased as needed. The rotary worktable 3 is used to drive the positioning fixtures 2 to rotate. The mounting frame 8 is located on one side of the rotary worktable 3. The drive mechanism 7 is mounted on the mounting frame 8, and the connecting seat 6 is fixed on the output end of the drive mechanism 7. The drive mechanism 7 is used to drive the connecting seat 6 to move up and down. The drive mechanism 7 is usually a cylinder, but in other embodiments, it can also be an electric cylinder or a hydraulic cylinder or other reciprocating lifting device. The pressing column 5 and the extrusion die 4 are both mounted on the connecting seat 6. The extrusion die 4 is used to extrude the valve cover 12, and the pressing column 5 is used to press the valve cover 12. The pressing column 5 is located at the center of the extrusion die 4. The pressing column 5 can be deformed under force to reduce its height, so that when the pressing column 5 contacts the valve cover 12 first, it will not hinder the extrusion die 4 from continuing to move down to press the valve seat 11.

[0030] The mounting frame 8 includes columns 81, crossbeams 82, and a top plate 83. There are two columns 81, spaced apart on the same side of the rotary worktable 3. There are two crossbeams 82, each fixed to a corresponding column 81, typically by welding. The top plate 83 is fixed to the two crossbeams 82, also typically by welding. The drive mechanism 7 is mounted on the top plate 83, and its output end passes through the top plate 83 and is fixed to the connecting seat 6. The crossbeams 82 allow the top plate 83 to be fixed above the rotary worktable 3, facilitating the alignment of the guide post 91 and the extrusion die 4 mounted on the connecting seat 6 with the positioning fixture 2. The drive mechanism 7 is connected to the connecting seat 6 via a mounting plate 84, which has guide posts 91. The top plate 83 of the mounting frame 8 has guide holes that mate with the guide posts 91, allowing the connecting seat 6 to move vertically up and down. The bottom of the mounting plate 84 is also provided with a connecting sleeve 85, which is used to fix it to the connecting seat 6.

[0031] The rotary worktable 3 includes a rotary table 31 and a rotary driver 32. The rotary table 31 has its output end fixed to the rotary driver 32. The rotary driver 32 drives the rotary table 31 to rotate. The rotary table 31 is used to mount the positioning fixture 2. The rotary driver 32 drives the rotary table 31 to rotate, thereby causing the positioning fixture 2 to rotate.

[0032] The pressing post 5 is made of rubber to reduce costs. The pressing post 5 has a receiving hole for accommodating the valve stem 14 on the valve cover 12, ensuring that the pressing post 5 can press the valve cover 12 without being interfered with by the valve stem 14.

[0033] like Figure 5 As shown, the extrusion die 4 has a guide groove 41, which is formed by an upward indentation from the bottom surface of the extrusion die 4. The sidewall of the guide groove 41 is inclined to guide the bending direction of the enclosure 13. The bottom of the guide groove 41 smoothly transitions to the sidewall, facilitating the bending of the enclosure 13 towards the center of the valve seat 11. An avoidance hole 42 is provided at the bottom of the guide groove 41 to avoid the pressing column 5, allowing the pressing column 5 to be installed on the connecting seat 6. This allows the diameter of the avoidance hole 42 to be larger than the diameter of the pressing column 5, preventing the enclosure 13 from contacting the pressing column 5 after bending during the extrusion process, thus extending the service life of the pressing column 5. The extrusion die 4 extends upward to form a positioning part 43, which is used to connect with the connecting seat 6. The extrusion die 4 has a positioning part 43 for quickly positioning the installation position of the extrusion die 4, and the positioning part 43 is formed by the upward extension of the extrusion die 4.

[0034] like Figure 6 As shown, the positioning fixture 2 is provided with a workpiece positioning groove 21. The contour of the workpiece positioning groove 21 is adapted to the shape of the valve seat 11, ensuring that the valve seat 11 will not move when placed in the workpiece positioning groove 21. The positioning fixture 2 is provided with a positioning hole 23, which is used to position the connecting seat 6. The positioning fixture 2 is provided with a limiting member 22, which is used to limit the downward movement of the clamping mold. The limiting member 22 is made of screws, and there are two limiting members 22. The positioning fixture 2 is provided with two symmetrical screw holes, and each screw is screwed into a corresponding screw hole on the positioning fixture 2. The provision of two limiting members 22 ensures that the clamping mold can be stably restricted. The use of screws for the limiting members 22 allows for easy adjustment of the height of the limiting members 22 to accommodate different valve seats 11 and valve covers 12.

[0035] A connecting post 92 is installed on the connecting seat 6, and the connecting post 92 is fixed to the connecting sleeve 85. Specifically, the connecting sleeve 85 has a receiving hole that matches the size of the connecting post 92, so that the connecting sleeve 85 can be fitted onto the connecting post 92. The connecting sleeve 85 is provided with a screw hole that communicates with the receiving hole, and a locking screw 93 is provided in the screw hole for locking the connecting post 92. A positioning post 94 is installed on the connecting seat 6, and the positioning post 94 cooperates with the positioning hole 23 on the positioning fixture 2 to quickly position the connecting seat 6, so that the extrusion post and extrusion die 4 installed on the connecting seat 6 can be aligned with the valve seat 11 located in the workpiece positioning groove 21, ensuring that the extrusion die 4 can accurately extrude the retaining wall 13 on the valve seat 11.

[0036] like Figure 7As shown, the connecting seat 6 is provided with an upper positioning groove 61, a first mounting hole 62, a second mounting hole 63, and a third mounting hole 64. The upper positioning groove 61 is located at the bottom of the connecting seat 6 and is formed by an upward indentation from the bottom of the connecting seat 6. The positioning part 43 is inserted into the positioning groove. The first mounting hole 62 is located at the bottom of the upper positioning groove 61, that is, the first mounting hole 62 is formed by an upward indentation from the bottom of the upper positioning groove 61. The first mounting hole 62 is used to install the pressing post 5. The pressing post 5 is fixed in the first mounting hole 62 by an interference fit, which can improve the assembly speed and eliminate the need for screws, reducing the number of parts. The second mounting hole 63 is located at the top of the connecting seat 6. The connecting post 92 is provided in the second mounting hole 63. A screw hole is provided at the bottom of the second mounting hole 63. A screw is provided on the connecting post 92. The screw passes through the connecting post 92 and screws into the screw hole in the second mounting hole 63, thereby fixing the connecting post 92 to the connecting seat 6. The third mounting hole 64 is located at the bottom of the connecting seat 6. There are two third mounting holes 64, one on each side of the first mounting hole 62. Two positioning posts 94 are respectively located within the third mounting holes 64. Each third mounting hole 64 has a threaded hole penetrating the connecting seat 6. Screws are screwed into these holes and connected to the positioning posts 94, thereby fixing the positioning posts 94 to the connecting seat 6. The connecting posts 92 and 94 are mounted on the connecting seat 6 using screws, facilitating the assembly and disassembly of the connecting posts 92 and 94.

[0037] like Figure 8 and Figure 9 As shown, when assembling valve seat 11 and valve cover 12, first place valve seat 11 in the positioning groove on the positioning fixture 2, and simultaneously place valve cover 12 on valve seat 11; then, drive mechanism 7 drives connecting seat 6 to move downward under the guidance of guide column 91. Connecting seat 6 drives extrusion mold 4 and pressing column 5 to move downward. During the downward movement, pressing column 5 will first contact valve cover 12. As it continues to move downward, connecting seat 6 and valve cover 12 will compress pressing column 5 to deform and reduce its height, so as to ensure that connecting seat 6 can continue to drive extrusion mold 4 to move downward. After extrusion mold 4 contacts enclosure 13, it will compress enclosure 13 to bend and deform towards the center of valve seat 11, forming a partial wrapping of valve cover 12 on valve seat 11 to achieve assembly of valve cover 12 and valve seat 11. Assembly can be completed in one go, with fast assembly speed and high efficiency. After completion, the drive mechanism 7 is reset, and then the rotary driver 32 drives the rotary table 31 to rotate, thereby removing the assembled valve seat 11 and valve cover 12, and moving the unassembled valve seat 11 and valve cover 12 to the bottom of the extrusion die 4 for one extrusion, so as to realize continuous assembly of valve cover 12 and valve seat 11 without increasing the assembly time due to the placement of valve seat 11 and valve cover 12, and further shortening the assembly time.

[0038] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A gas shut-off valve press-fitting machine, characterized in that: The device includes a positioning fixture for placing and positioning a valve seat, a rotary table for rotating the positioning fixture, an extrusion die for extruding a valve cover, a pressing column for pressing the valve cover, a connecting seat for mounting the extrusion die and the pressing column, a drive mechanism for driving the connecting seat, and a mounting bracket for mounting the drive mechanism. Multiple positioning fixtures are arranged on the rotary table, evenly distributed around the center of the rotary table. The connecting seat is mounted on the output end of the drive mechanism. The pressing column is located at the center of the extrusion die and is deformable under force to reduce its height.

2. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The extrusion die has a guide groove, the sidewall of the guide groove is inclined, the bottom of the guide groove is smoothly transitioned to the sidewall, and the bottom of the guide groove is provided with a clearance hole to avoid the pressing column.

3. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The pressing column is made of rubber.

4. The gas shut-off valve press-fitting machine as described in claim 3, characterized in that: The connecting seat is provided with a first mounting hole, and the pressing column is fixed in the first mounting hole by an interference fit.

5. The gas shut-off valve press-fitting machine as described in claim 4, characterized in that: The extrusion die extends upward to form a positioning part, and the connecting seat is provided with an upper positioning groove. The positioning part is located in the upper positioning groove, and the first mounting hole is located at the bottom of the upper positioning groove.

6. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The positioning fixture is provided with a positioning hole, and the connecting seat is equipped with a positioning post, and the positioning hole and the positioning post cooperate with each other.

7. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The positioning fixture is provided with a workpiece positioning groove that matches the shape of the valve seat.

8. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The drive mechanism is connected to the connecting seat via a mounting plate. The mounting plate is provided with guide posts, and the mounting bracket is provided with guide holes that cooperate with the guide posts.

9. The gas shut-off valve press-fitting machine as described in claim 8, characterized in that: A connecting post is installed on the connecting base, and a connecting sleeve is provided on the mounting plate. The connecting sleeve is fitted onto the connecting post, and a screw hole is provided on the connecting sleeve. A locking screw for locking the connecting post is provided in the screw hole.

10. The gas shut-off valve press-fitting machine as described in claim 1, characterized in that: The positioning fixture is provided with a limiting component for restricting the downward movement of the clamping mold. The limiting component is a screw, which is screwed onto the positioning fixture.

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