An automatic feeding device for diaphragm of diaphragm gas meter

Abstract

The present application discloses an automatic feeding device for diaphragms of diaphragm gas meters, which relates to the field of automated production technology, including a material grabbing mechanism, the material grabbing mechanism is provided with a horizontal driving member and a lifting driving member, the material grabbing mechanism includes a mounting seat, the mounting seat is provided with a plurality of negative pressure adsorption components and a plurality of positioning rod components, the negative pressure adsorption components are used to adsorb the diaphragm group, the positioning rod components are used to position the positioning holes of the membrane skin and the positioning holes of the sealing ring; the mounting seat is provided with a plurality of positive pressure blowing parts, when the negative pressure adsorption component adsorbs the diaphragm group, and the sealing ring is located below the outer edge of the membrane skin, the positive pressure blowing parts are used to blow the sealing ring obliquely upward to a position abutting against the outer edge of the membrane skin. The material grabbing mechanism of the present application can transfer the pressure ring, the diaphragm group and the sealing ring at one time.

Description

Technical Field

[0001] The present application relates to the field of automated production technology, and in particular to an automatic feeding device for a diaphragm of a diaphragm gas meter. Background Art

[0002] Diaphragm gas meters are natural gas metering devices. The mainstream gas meters on the market are divided into two types: mechanical diaphragm gas meters and electronic diaphragm gas meters. Mechanical diaphragm gas meters are cumbersome to read, and electronic gas meters are currently widely used, also known as prepaid gas meters. This type of gas meter adds electronic metering functions based on mechanical meters.

[0003] When the flowing gas passes through the diaphragm gas meter, it is blocked by the friction of the pipeline and the mechanism, and the internal gas will produce a pressure difference at the inlet and outlet of the gas meter. The pressure difference pushes the diaphragm of the diaphragm gas meter to move in the metering chamber, and drives the gas distribution mechanism to coordinate the gas distribution, so that the movement of the diaphragm can be continuous and reciprocating.

[0004] As more and more traditional manufacturing industries begin to introduce automated production technologies to improve work efficiency and product quality, the degree of automation in the assembly and production of diaphragm gas meters is becoming increasingly higher.

[0005] The membrane skin inside the diaphragm gas meter is installed in the movement housing in the form of an assembly with other components. The components used to be combined with the membrane skin include a parallel plate, a base, a pressure ring 8 and a sealing ring 7. The membrane skin is a square bowl-shaped structure. The parallel plate and the base plate are respectively located on both sides of the bottom wall of the membrane skin and are welded and fixed to the bottom wall of the membrane skin; the opening end of the membrane skin has an outer edge, and the pressure ring 8 and the sealing ring 7 are respectively located on both sides of the outer edge of the membrane skin. The positional relationship between the pressure ring 8, the sealing ring 7 and the membrane skin is shown in the figure. Figure 5 .

[0006] During the production and assembly of the diaphragm gas meter, the parallel plate and the base are first assembled onto the membrane skin as the diaphragm group 6 by means of automatic loading, and then the sealing ring 7, the diaphragm group 6 and the pressing ring 8 are sequentially assembled onto the movement housing. In order to ensure the installation accuracy of the membrane skin, the edge of the movement housing of the diaphragm gas meter is pre-set with positioning convex columns, and the sealing ring 7, the membrane skin and the pressing ring 8 are pre-set with positioning holes that match the positioning convex columns.

[0007] During the automated assembly process of the gas meter, the sealing ring 7, the membrane skin and the pressure ring 8 usually need to be provided with feeding devices respectively, and the materials are fed at different feeding stations. In addition to the necessary grasping mechanism 1, the feeding device of each component often needs to be equipped with corresponding translation and lifting drive mechanisms, which makes the overall equipment structure more complicated, the equipment failure rate is higher, and the operation and maintenance of the equipment are more difficult. Summary of the invention

[0008] In order to simplify the structure of a feeding device of an automatic assembly device for a gas meter, the present application provides an automatic feeding device for a diaphragm of a diaphragm type gas meter.

[0009] The present application provides a diaphragm gas meter diaphragm automatic feeding device adopts the following technical solution:

[0010] A diaphragm automatic feeding device for a diaphragm gas meter comprises a material grabbing mechanism, wherein the material grabbing mechanism is provided with a horizontal driving member and a lifting driving member, wherein the material grabbing mechanism comprises a mounting seat, wherein the mounting seat is provided with a plurality of negative pressure adsorption components and a plurality of positioning rod components, wherein the negative pressure adsorption components are used to adsorb the diaphragm group, and the positioning rod components are used to position the positioning holes of the diaphragm skin and the positioning holes of the sealing ring; wherein the mounting seat is provided with a plurality of positive pressure blowing components, wherein when the negative pressure adsorption components adsorb the diaphragm group and the sealing ring is located below the outer edge of the diaphragm skin, the positive pressure blowing components are used to blow the sealing ring upward to a position abutting against the outer edge of the diaphragm skin.

[0011] By adopting the above technical solution, when the automatic feeding device is used for feeding, the material grabbing mechanism moves horizontally and vertically under the drive of the horizontal driving member and the lifting driving member, and the material grabbing mechanism first moves to the top of the diaphragm group, and uses the negative pressure adsorption component to grab the diaphragm group with negative pressure, and then moves to the top of the sealing ring, so that the membrane skin of the diaphragm group moves downward to the top of the sealing ring, and then the positive pressure blowing member of the material grabbing mechanism blows air to the sealing ring to force the sealing ring to press against the upper edge of the membrane skin, so that the material grabbing mechanism can simultaneously transfer the diaphragm group and the sealing ring to the movement housing, and the positioning rod assembly of the material grabbing mechanism can simultaneously position the diaphragm group and the sealing ring, which is conducive to ensuring the assembly accuracy of the gas meter. The material grabbing mechanism can simultaneously transfer the diaphragm group and the sealing ring, which helps to simplify the equipment structure, and compared with the solution of grabbing the diaphragm group and the sealing ring in batches, in this technical solution, the material grabbing mechanism can transfer the diaphragm group and the sealing ring to the movement housing at one time, which is conducive to ensuring the feeding efficiency.

[0012] Optionally, the positioning rod assembly is a hollow rod, the inner cavity of the positioning rod assembly is a negative pressure cavity, a movable limit assembly is provided on the inner side of the positioning rod assembly, the movable limit assembly includes a telescopic part and a return spring, the telescopic part is used to support the pressure ring, the telescopic part is provided with a guide surface for contacting the positioning hole of the pressure ring, the peripheral wall of the positioning rod assembly is provided with a through hole for exposing the telescopic part, one end of the return spring is connected to the telescopic part, and the other end of the return spring abuts against the inner peripheral surface of the positioning rod assembly.

[0013] By adopting the above technical solution, before grabbing the diaphragm group, the material grabbing mechanism first moves the material grabbing mechanism to the material preparation position of the pressure ring, and makes the positioning rod assembly of the material grabbing mechanism penetrate into the positioning hole of the pressure ring until the positioning hole passes through the movable limit assembly. In the process of the positioning hole passing through the movable limit assembly, the inner wall of the positioning hole forces the telescopic part to retract into the inner side of the positioning rod assembly. After the positioning hole passes through the telescopic part, the spring forces the telescopic part to reset to support the pressure ring. After the material grabbing mechanism grabs the pressure ring using the limit assembly, it moves to the top of the diaphragm group and grabs the diaphragm group using the negative pressure adsorption assembly. At the same time, negative pressure is formed in the positioning rod assembly. Under the action of the negative pressure, the telescopic part retreats into the inner side of the positioning rod assembly, so that the pressure ring falls above the outer edge of the membrane skin, so that the material grabbing mechanism can transfer the pressure ring, the diaphragm group and the sealing ring at one time.

[0014] Optionally, the positioning rod assembly includes a fixed rod and a movable rod, one end of the fixed rod is fixedly connected to the mounting seat, and the other end of the fixed rod is movably plugged into the movable rod. A compression spring is provided at one end of the movable rod close to the fixed rod, one end of the compression spring is connected to the movable rod, and the compression spring is used to force the movable rod away from the mounting seat; the movable limiting assembly is installed on the movable rod.

[0015] By adopting the above technical solution, the movable rod of the positioning rod assembly can be extended and retracted relative to the fixed rod. When the grabbing mechanism moves the diaphragm group, pressure ring and sealing ring to the upper rear of the movement housing, the positioning column of the movement housing pushes the movable rod of the positioning rod assembly upward, so that the positioning column can penetrate into the positioning holes of the membrane skin, pressure ring and sealing ring. When the grabbing mechanism moves upward and leaves the movement housing, the compression spring forces the movable rod to reset.

[0016] Optionally, it also includes a conveyor belt mechanism and a support plate, wherein the conveyor belt mechanism is used to convey the sealing ring, the support plate is installed at the output end of the conveyor belt mechanism, the support plate is used to receive the sealing ring output by the conveyor belt mechanism, the support plate is provided with an escape opening for avoiding the membrane skin, guide members are respectively provided on both sides of the support plate, the guide members are used to guide the sealing ring, and the support plate is provided with a limit member, the limit member is used to prevent the sealing ring from sliding off from the side away from the conveyor belt.

[0017] By adopting the above technical solution, the conveyor belt mechanism conveys the sealing ring to the support plate, and before the sealing ring abuts against the limiter, the guide members located on both sides of the support plate guide the sealing ring to control the position of the sealing ring along the width direction of the conveyor belt mechanism, and the limiter can control the position of the sealing ring along the feeding direction of the conveyor belt mechanism, so that the sealing ring is positioned. The grabbing mechanism carrying the diaphragm group moves from top to bottom to approach the sealing ring until the membrane skin of the diaphragm group enters the inner side of the sealing ring and the inner side of the avoidance port, and the positive pressure blowing member blows air to the sealing ring to force the sealing ring to abut against the outer edge of the membrane skin, so that the sealing ring can move with the diaphragm group.

[0018] Optionally, there are multiple guide members on each side of the support plate, and the guide members on the same side are spaced apart along the feeding direction of the conveyor belt mechanism. The guide members are vertical rollers, and the outer peripheral surface of the vertical rollers is used to abut against the side edge of the sealing ring.

[0019] By adopting the above technical solution, the outer circumference of the vertical roller guides the sealing ring. When the sealing ring moves relative to the vertical roller, the vertical roller can rotate, making it difficult for the vertical roller to hinder the movement of the sealing ring along the surface of the support plate.

[0020] Optionally, an induction switch is provided at one end of the support plate away from the conveyor belt mechanism, and a signal from the induction switch is used to control the start and stop of the conveyor belt mechanism.

[0021] By adopting the above technical solution, when a sealing ring is moved into place on the pallet, the signal of the induction switch controls the conveyor belt mechanism to stop running, thereby controlling the conveyor belt mechanism to stop conveying the sealing ring to the pallet. When the grabbing mechanism takes the sealing ring off the pallet, the signal of the induction switch controls the conveyor belt mechanism to continue running, so that the conveyor belt mechanism conveys the next sealing ring to the pallet.

[0022] Optionally, the support plate is provided with an auxiliary supporting structure, the auxiliary supporting structure includes a wire, the length direction of the wire is arranged along the feeding direction of the conveyor belt mechanism, the wire is extended along the upper surface of the support plate, the upper surface of the support plate is provided with a wire groove for avoiding the wire, one end of the wire is fixedly connected to the support plate, and the other end of the wire is provided with a plumb bob, and the plumb bob forces the wire to abut the bottom of the wire groove through gravity.

[0023] By adopting the above technical solution, when the conveyor belt mechanism conveys the sealing ring to the support plate, the sealing ring slides along the surface of the support plate. During this process, the taut silk thread can play an auxiliary supporting role for the part of the sealing ring hanging in the avoidance opening, thereby reducing the deformation and sagging of the part of the sealing ring hanging in the avoidance opening. On the other hand, when the membrane skin of the diaphragm group enters the avoidance opening, the silk thread can deform to avoid the membrane skin, and at the same time, the silk thread drives the plumb bob to move upward, and when the membrane skin leaves the avoidance opening, the gravity of the plumb bob drives the silk thread to return to a straight state.

[0024] Optionally, each of the positive-pressure blowing components is connected in series with an annular main pipe, and the annular main pipe is used to connect to an air compression device.

[0025] By adopting the above technical solution, each positive-pressure blowing component simultaneously delivers compressed gas through the annular main pipe, so that each positive-pressure blowing component can act on the sealing ring as simultaneously as possible.

[0026] Optionally, the air outlet holes of the positive-pressure blowing members are in the shape of long slits, and the length direction of the air outlet holes is arranged along the arrangement direction of the positive-pressure blowing members.

[0027] By adopting the above technical solution, the air outlet of the positive pressure blowing piece is arranged in a long slit shape, which is beneficial to increase the effective action area of ​​the positive pressure blowing piece on the sealing ring.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] The grabbing mechanism can transfer the diaphragm group and the sealing ring at the same time, which helps to simplify the equipment structure. Moreover, compared with the solution of grabbing the diaphragm group and the sealing ring in batches, in this technical solution, the grabbing mechanism can transfer the diaphragm group and the sealing ring to the movement housing at one time, which is beneficial to ensure the loading efficiency.

[0030] After the grabbing mechanism grabs the pressure ring using the limit assembly, it moves to the top of the diaphragm group and grabs the diaphragm group using the negative pressure adsorption assembly. At the same time, negative pressure is formed in the positioning rod assembly, and the telescopic part retreats into the inner side of the positioning rod assembly under the action of the negative pressure, causing the pressure ring to fall above the outer edge of the membrane skin, thereby enabling the grabbing mechanism to transfer the pressure ring, diaphragm group and sealing ring at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the automatic diaphragm feeding device of the diaphragm gas meter of this embodiment.

[0032] Figure 2 It is a structural schematic diagram of the material grabbing mechanism of this embodiment.

[0033] Figure 3 Schematic diagram of the structure of the positioning rod assembly of this embodiment.

[0034] Figure 4 It is a schematic structural diagram of the support plate of this embodiment.

[0035] Figure 5 It is a schematic diagram of the positional relationship between the membrane skin, the sealing ring and the pressure ring in the background technology.

[0036] Description of reference numerals:

[0037] 1. Material grabbing mechanism; 11. Mounting seat; 12. Negative pressure adsorption assembly; 121. Connecting pipe; 122. Suction cup; 13. Positioning rod assembly; 131. Fixing rod; 1311. Limiting inner edge; 1312. Inner step surface; 132. Movable rod; 1321. Limiting outer edge; 1322. Through hole; 133. Movable limiting assembly; 1331. Telescopic member; 1332. Reset spring; 1333. Guide surface; 13 4. Compression spring; 14. Positive pressure blowing part; 141. Annular main pipe; 20. Horizontal driving part; 21. Transverse driving part; 22. Longitudinal driving part; 3. Lifting driving part; 4. Conveyor belt mechanism; 5. Support plate; 51. Avoidance; 52. Guide part; 53. Induction switch; 54. Limiting part; 56. Auxiliary supporting structure; 561. Silk thread; 562. Plumb part; 6. Diaphragm group; 7. Sealing ring; 8. Pressing ring. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-4 This application is described in further detail.

[0039] The present application embodiment discloses an automatic feeding device for a diaphragm of a diaphragm gas meter. Figure 1 and Figure 2 The automatic feeding device for the diaphragm of the diaphragm gas meter includes a material grabbing mechanism 1, a horizontal driving member 20 and a lifting driving member 3. The horizontal driving member 20 includes a transverse driving member 21 and a longitudinal driving member 22. The transverse driving member 21, the longitudinal driving member 22 and the lifting driving member 3 can be selected as a linear module or a rodless cylinder. The material grabbing mechanism 1 includes a mounting seat 11, and the mounting seat 11 is provided with a negative pressure adsorption component 12, a positioning rod component 13 and a positive pressure blowing component 14. The negative pressure adsorption component 12 is used to adsorb the diaphragm group 6, and the positioning rod component 13 is used to position the positioning hole of the membrane skin, the positioning hole of the sealing ring 7 and the positioning hole of the pressure ring 8. The positioning rod component 13 is a hollow rod, and the positioning rod component 13 is provided with a movable limit component 133. The movable limit component 133 is used to support the pressure ring 8, and the movable limit component 133 can be retracted into the inner side of the positioning rod component 13.

[0040] When the automatic feeding device is in use, the material grabbing mechanism 1 can be translated and lifted under the drive of the lifting drive member 3 and the horizontal drive member 20. When the diaphragm is automatically fed, the material grabbing mechanism 1 is first moved to the material preparation position of the pressing ring 8, and the positioning rod assembly 13 of the material grabbing mechanism 1 is inserted into the positioning hole of the pressing ring 8, and the positioning rod assembly 13 is used to grab the pressing ring 8 by using the movable limit assembly 133; then the material grabbing mechanism 1 is moved to the material preparation position of the diaphragm group 6, and the material grabbing mechanism 1 grabs the diaphragm group 6 by using the negative pressure adsorption assembly 12; after that, the material grabbing mechanism 1 is moved to the material preparation position of the sealing ring 7, so that the membrane skin of the diaphragm group 6 enters the inner side of the sealing ring 7, and the sealing ring 7 is located directly below the outer edge of the membrane skin, and then the positive pressure blowing member 14 blows the sealing ring 7 to the state of being close to the outer edge of the membrane skin; after that, the material grabbing mechanism 1 moves the pressing ring 8, the diaphragm group 6 and the sealing ring 7 into place at one time.

[0041] Reference Figure 2 The mounting seat 11 is a hollow shell structure, and the mounting seat 11 is used to connect the negative pressure generating device. The negative pressure adsorption component 12 includes a connecting tube 121 and a suction cup 122. One end of the connecting tube 121 is connected to the mounting seat 11, and the other end is connected to the suction cup 122. There are four negative pressure adsorption components 12, and the four negative pressure adsorption components 12 are distributed at four corners. The negative pressure adsorption component 12 is used to adsorb the parallel plates of the diaphragm group 6. In another embodiment, the negative pressure adsorption component 12 can be used to adsorb the membrane skin of the diaphragm group 6. In this case, the angle of the suction cup 122 of the negative pressure adsorption component 12 needs to be adjusted according to the adsorbed surface of the membrane skin.

[0042] Reference Figure 3 The positioning rod assembly 13 includes a fixed rod 131 and a movable rod 132. The diameter of the fixed rod 131 is larger than the diameter of the movable rod 132. One end of the fixed rod 131 is threadedly connected with the mounting seat 11. The fixed rod 131 is a tubular structure, and the fixed rod 131 is connected with the inner cavity of the mounting seat 11. The other end of the fixed rod 131 is movably plugged with the movable rod 132. The end of the fixed rod 131 away from the mounting seat 11 is provided with a limiting inner edge 1311, and the end of the movable rod 132 close to the mounting seat 11 is provided with a limiting outer edge 1321. The end of the movable rod 132 close to the fixed rod 131 is provided with a compression spring 134, and one end of the compression spring 134 abuts against the limiting outer edge 1321 of the movable rod 132. The end of the fixed rod 131 close to the mounting seat 11 is provided with an inner step surface 1312, and the other end of the compression spring 134 abuts against the inner step surface 1312. The compression spring 134 can force the movable rod 132 away from the mounting seat 11.

[0043] Reference Figure 3 One end of the movable rod 132 away from the fixed rod 131 is a closed end, and the end surface of the movable rod 132 away from the fixed rod 131 is an outward convex spherical surface, so that the movable rod 132 can be easily inserted into the positioning hole of the pressure ring 8.

[0044] When the grabbing mechanism 1 transfers the pressure ring 8, the diaphragm group 6 and the sealing ring 7 to the movement housing, the positioning posts on the movement housing are inserted into the positioning holes of the pressure ring 8, the positioning holes of the membrane skin and the positioning holes of the sealing ring 7. At this time, the movable rod 132 can move up to avoid the positioning posts on the movement housing; when the grabbing mechanism 1 leaves the movement housing, the compression spring 134 can force the movable rod 132 to reset.

[0045] Reference Figure 2 and Figure 3 The movable stopper assembly 133 is installed on the inner side of the movable rod 132. The movable stopper assembly 133 includes a telescopic member 1331 and a return spring 1332. The telescopic member 1331 is used to support the pressure ring 8. The telescopic member 1331 is provided with a guide surface 1333 for contacting the positioning hole of the pressure ring 8. The guide surface 1333 is a convex hemispherical surface. The peripheral wall of the movable rod 132 is provided with a through hole 1322 for exposing the guide surface 1333 of the telescopic member 1331. The distance from the through hole 1322 to the lower end of the movable rod 132 is greater than the concave depth of the membrane skin. One end of the return spring 1332 is connected to the telescopic member 1331, and the other end of the return spring 1332 abuts against the inner peripheral surface of the movable rod 132. The inner cavity of the positioning rod assembly 13 is connected to the inner cavity of the mounting seat 11, so that a negative pressure can be formed on the inner side of the positioning rod assembly 13.

[0046] When the positioning rod assembly 13 is inserted into the positioning hole of the pressing ring 8, the positioning hole of the pressing ring 8 forces the telescopic member 1331 to retreat into the movable rod 132. After the telescopic member 1331 passes through the positioning hole of the pressing ring 8, the telescopic member 1331 is reset under the elastic force of the reset spring 1332, so that the telescopic member 1331 supports the pressing ring 8. When the grabbing mechanism 1 grabs the diaphragm group 6 by negative pressure, the inner cavity of the positioning rod assembly 13 simultaneously forms negative pressure, so that the telescopic member 1331 is retracted into the movable rod 132 under the action of the internal and external pressure difference, so that the pressing ring 8 falls onto the membrane skin of the diaphragm group 6.

[0047] Reference Figure 2 There are four positive pressure blowing parts 14, which are pipes. The four positive pressure blowing parts 14 are distributed at four corners. The positive pressure blowing parts 14 are connected in series with a ring main pipe 141, which is used to connect the air compression equipment. The air outlet of the positive pressure blowing part 14 is set to be a long slit, and the length direction of the air outlet is set along the arrangement direction of each positive pressure blowing part 14. In another embodiment, the air outlet of the positive pressure blowing part 14 can also be set to be a plurality of evenly distributed ones.

[0048] Reference Figure 1 and Figure 4The automatic feeding device for the diaphragm of the diaphragm gas meter also includes a conveyor belt mechanism 4 and a support plate 5. The conveyor belt mechanism 4 is used to convey the sealing ring 7. The support plate 5 is installed at the output end of the conveyor belt mechanism 4. The upper surface of the support plate 5 is kept flush with or lower than the upper surface of the conveyor belt. The height difference between the upper surface of the support plate 5 and the upper surface of the conveyor belt is less than the thickness of the sealing ring 7. The support plate 5 is used to receive the sealing ring 7 output by the conveyor belt mechanism 4.

[0049] The support plate 5 is provided with an escape opening 51 for avoiding the membrane skin, and guide members 52 are respectively provided on both sides of the support plate 5, and the guide members 52 are used to guide the sealing ring 7. The support plate 5 is provided with a limit member 54, and the limit member 54 is used to prevent the sealing ring 7 from sliding off from the side away from the conveyor belt.

[0050] Reference Figure 4 There are multiple guide members 52 on each side of the support plate 5, and the guide members 52 on the same side are arranged at intervals along the feeding direction of the conveyor belt mechanism 4. The guide member 52 is a vertical roller, and the outer peripheral surface of the vertical roller is used to abut the side edge of the sealing ring 7. An induction switch 53 is provided at one end of the support plate 5 away from the conveyor belt mechanism 4, and the signal of the induction switch 53 is used to control the start and stop of the conveyor belt mechanism 4.

[0051] The conveyor belt mechanism 4 conveys the sealing ring 7 to the pallet 5. The sealing ring 7 can slide along the surface of the pallet 5 under the drive of the conveyor belt mechanism 4. When the sealing ring 7 reaches the pallet 5, the sealing ring 7 on the conveyor belt can push the sealing ring 7 on the pallet 5 to slide along the pallet 5 and approach the stopper 54. Before the sealing ring 7 abuts the stopper 54, the guide members 52 on both sides of the pallet 5 guide the sealing ring 7 to control the position of the sealing ring 7 along the width direction of the conveyor belt mechanism 4. The stopper 54 can control the position of the sealing ring 7 along the feeding direction of the conveyor belt mechanism 4, so that the sealing ring 7 is positioned. The gripping mechanism 1 carrying the diaphragm group 6 moves from top to bottom to approach the sealing ring 7 until the membrane skin of the diaphragm group 6 enters the inner side of the sealing ring 7 and the inner side of the avoidance port 51, and the positive pressure blowing member 14 blows air to the sealing ring 7 to force the sealing ring 7 to abut against the outer edge of the membrane skin, so that the sealing ring 7 can move with the diaphragm group 6.

[0052] Reference Figure 4 The support plate 5 is provided with an auxiliary supporting structure 56, and the auxiliary supporting structure 56 includes a wire 561. The length direction of the wire 561 is arranged along the feeding direction of the conveyor belt mechanism 4. The wire 561 is extended along the upper surface of the support plate 5. The upper surface of the support plate 5 is provided with a wire groove for avoiding the wire 561. One end of the wire 561 is fixedly connected to the support plate 5, and the other end of the wire 561 is provided with a plumb bob 562. The plumb bob 562 forces the wire 561 to abut the bottom of the wire groove through gravity.

[0053] When the conveyor belt mechanism 4 conveys the sealing ring 7 to the support plate 5, the taut wire 561 can play an auxiliary supporting role for the portion of the sealing ring 7 suspended in the avoidance opening 51, thereby reducing the deformation and sagging of the portion of the sealing ring 7 suspended in the avoidance opening 51. On the other hand, when the membrane skin of the diaphragm group 6 enters the avoidance opening 51, the wire 561 can deform to avoid the membrane skin, and at the same time, the wire 561 drives the plumb bob 562 to move upward, and when the membrane skin leaves the avoidance opening 51, the gravity of the plumb bob 562 drives the wire 561 to return to a taut state.

[0054] The implementation principle of the automatic feeding device for diaphragms of a diaphragm gas meter in the embodiment of the present application is as follows: when feeding using the automatic feeding device, the grabbing mechanism 1 moves horizontally and vertically under the drive of the horizontal driving member 20 and the lifting driving member 3.

[0055] The material grabbing mechanism 1 first moves to the material preparation position of the pressing ring 8, and the positioning rod assembly 13 of the material grabbing mechanism 1 penetrates the positioning hole of the pressing ring 8 until the positioning hole passes through the movable stop assembly 133. During the process of the positioning hole passing through the movable stop assembly 133, the inner wall of the positioning hole of the pressing ring 8 forces the telescopic member 1331 to retract into the inner side of the positioning rod assembly 13. After the positioning hole of the pressing ring 8 passes through the telescopic member 1331, the spring forces the telescopic member 1331 to reset to support the pressing ring 8. Then the material grabbing mechanism 1 moves to the top of the diaphragm group 6, the movable rod 132 of the positioning rod assembly 13 penetrates the positioning hole of the membrane skin, the telescopic member 1331 always remains at a position higher than the diaphragm group, the negative pressure adsorption assembly 12 of the feeding device uses negative pressure to grab the diaphragm group 6, at the same time, negative pressure is formed in the positioning rod assembly 13, and the telescopic member 1331 retreats into the inner side of the positioning rod assembly 13 under the action of the negative pressure, so that the pressing ring 8 falls above the outer edge of the membrane skin.

[0056] Subsequently, the material grabbing mechanism 1 moves to the top of the support plate 5, and the material grabbing mechanism 1 carrying the diaphragm group 6 moves from top to bottom close to the sealing ring 7 on the support plate 5, until the membrane skin of the diaphragm group 6 enters the inner side of the sealing ring 7 and the inner side of the avoidance opening 51, and the lower end of the movable rod 132 penetrates the positioning hole of the sealing ring 7, and the positive pressure blowing member 14 blows air to the sealing ring 7 to force the sealing ring 7 to press against the outer edge of the membrane skin, so that the sealing ring 7 can move with the diaphragm group 6. Thus, the material grabbing mechanism 1 can transfer the pressing ring 8, the diaphragm group 6 and the sealing ring 7 at one time. In the process of the material grabbing mechanism 1 moving and loading, the positive pressure blowing member 14 maintains the blowing state, and the negative pressure adsorption component 12 maintains the negative pressure adsorption state.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic feeding device for diaphragm of a diaphragm gas meter, characterized in that: The invention comprises a material grabbing mechanism (1), wherein the material grabbing mechanism (1) is provided with a horizontal driving member (20) and a lifting driving member (3), wherein the material grabbing mechanism (1) comprises a mounting seat (11), wherein the mounting seat (11) is provided with a plurality of negative pressure adsorption components (12) and a plurality of positioning rod components (13), wherein the negative pressure adsorption components (12) are used to adsorb the diaphragm group (6), and the positioning rod components (13) are used to position the positioning holes of the diaphragm skin and the positioning holes of the sealing ring (7); wherein the mounting seat (11) is provided with a plurality of positive pressure blowing components (14), and when the negative pressure adsorption components (12) adsorb the diaphragm group (6) and the sealing ring (7) is located below the outer edge of the diaphragm skin, the positive pressure blowing components (14) are used to blow the sealing ring (7) upwards to a position abutting against the outer edge of the diaphragm skin; The positioning rod assembly (13) is a hollow rod. The inner cavity of the positioning rod assembly (13) is a negative pressure cavity. A movable limiting assembly (133) is provided on the inner side of the positioning rod assembly (13). The movable limiting assembly (133) comprises a telescopic member (1331) and a return spring (1332). The telescopic member (1331) is used to support the pressure ring (8). The telescopic member (1331) is provided with a guide surface (1333) for contacting the positioning hole of the pressure ring (8). A through hole (1322) is provided on the peripheral wall of the positioning rod assembly (13) for exposing the telescopic member (1331). One end of the return spring (1332) is connected to the telescopic member (1331), and the other end of the return spring (1332) abuts against the inner peripheral surface of the positioning rod assembly (13).

2. The automatic diaphragm feeding device for a diaphragm gas meter according to claim 1 is characterized in that: The positioning rod assembly (13) comprises a fixed rod (131) and a movable rod (132); one end of the fixed rod (131) is fixedly connected to the mounting seat (11); the other end of the fixed rod (131) is movably plugged into the movable rod (132); a compression spring (134) is provided at one end of the movable rod (132) close to the fixed rod (131); the compression spring (134) is used to force the movable rod (132) away from the mounting seat (11); and the movable limiting assembly (133) is mounted on the movable rod (132).

3. The automatic diaphragm feeding device for a diaphragm gas meter according to claim 1 is characterized in that: It also includes a conveyor belt mechanism (4) and a support plate (5), wherein the conveyor belt mechanism (4) is used to convey the sealing ring (7), the support plate (5) is installed at the output end of the conveyor belt mechanism (4), the support plate (5) is used to receive the sealing ring (7) output by the conveyor belt mechanism (4), the support plate (5) is provided with an escape opening (51) for avoiding the membrane skin, and the two opposite sides of the support plate (5) are respectively provided with guide members (52), the guide members (52) are used to guide the sealing ring (7), and the support plate (5) is provided with a limit member (54), and the limit member (54) is used to prevent the sealing ring (7) from sliding off from the side away from the conveyor belt.

4. The automatic diaphragm feeding device for a diaphragm gas meter according to claim 3 is characterized in that: A plurality of guide members (52) are provided on each side of the support plate (5), and the guide members (52) on the same side are arranged at intervals along the feeding direction of the conveyor belt mechanism (4). The guide members (52) are vertical rollers, and the outer peripheral surface of the vertical rollers is used to abut against the side edge of the sealing ring (7).

5. The automatic diaphragm feeding device for a diaphragm gas meter according to claim 3 is characterized in that: An induction switch (53) is provided at one end of the support plate (5) away from the conveyor belt mechanism (4), and a signal from the induction switch (53) is used to control the start and stop of the conveyor belt mechanism (4).

6. The automatic diaphragm feeding device for a diaphragm gas meter according to claim 3 is characterized in that: The support plate (5) is provided with an auxiliary support structure (56), the auxiliary support structure (56) comprising a wire (561), the length direction of the wire (561) being arranged along the feeding direction of the conveyor belt mechanism (4), the wire (561) extending along the upper surface of the support plate (5), the upper surface of the support plate (5) being provided with a wire groove for avoiding the wire (561), one end of the wire (561) being fixedly connected to the support plate (5), the other end of the wire (561) being provided with a plumb bob (562), the plumb bob (562) forcing the wire (561) to abut against the bottom of the wire groove by gravity.

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