Mounting equipment and mounting method for metal valve seat of gas storage cylinder

Abstract

The invention provides gas storage cylinder metal valve seat mounting equipment and a mounting method. The gas storage cylinder metal valve seat mounting equipment comprises a mounting platform, a turnover mechanism, a lifting platform assembly and a gas charging device, the mounting platform is provided with at least one mounting station; the turnover mechanisms are arranged on the two sides of the mounting platform; the turnover mechanism comprises a turnover motor and a rotating shaft arranged in the length direction of the mounting platform; the lifting platform assembly is arranged on the rotating shaft and corresponds to the mounting station; the lifting platform assembly comprises a first mounting plate, a lifting mechanism, a second mounting plate and a metal valve seat fixing platform; the lifting platform assembly is mainly used for fixing the metal valve seat and providing pressure for the metal valve seat so that the metal valve seat can make full contact with the plastic inner container and be bonded with the plastic inner container. The inflating device comprises an air delivery pipe connector which is connected with the metal valve seat fixing platform. According to the mounting equipment and the mounting method based on the mounting equipment, high-quality bonding of the metal valve seat and the plastic inner container can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel bottle processing, and in particular to a gas storage bottle metal valve seat installation device and an installation method. Background Art

[0002] As a clean energy, hydrogen energy has the advantages of zero emission, no pollution, and renewable, and is developing rapidly. At present, hydrogen storage is mainly achieved through high-pressure gaseous hydrogen storage in hydrogen storage bottles. The types of hydrogen storage bottles are divided into five types: I-V. Under the demand for high-pressure and lightweight gaseous hydrogen storage, type IV bottles (mainly including plastic liner, metal valve seat, and carbon fiber composite material winding layer outside the plastic liner) have become the current mainstream technical route. Since hydrogen is a flammable and explosive gas, hydrogen storage bottles, as carriers for hydrogen storage, have good sealing effects and high pressure bearing capacity, which are important factors affecting whether hydrogen storage bottles can be used safely and reliably. For type IV bottles, the quality of the connection between the plastic liner and the metal valve seat is one of the main reasons affecting the sealing and pressure bearing of hydrogen storage bottles. At present, the connection between the plastic liner and the metal valve seat of the type IV bottle is mainly glued. Usually, the metal valve seat after glue coating is docked with the plastic liner, and then pressure is applied to the metal valve seat or the plastic liner from the outside to complete the bonding of the metal valve seat and the plastic liner. In this method, if the pressure applied is small, the bonding may not be strong; if the pressure applied is large, since the plastic liner is more flexible than the metal valve seat, this external pressure method (see attached Figure 1 ), which may cause the opening and shoulder of the plastic liner to sink and deform, making it difficult to ensure bonding accuracy and bonding quality, and product quality cannot be guaranteed. In addition, the installation of metal valve seats is currently mainly done by manual gluing and installation, with poor gluing amount and bonding quality stability, and low production efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a gas cylinder metal valve seat installation device and installation method, wherein the device can simultaneously apply force to the inside and outside of the plastic liner shoulder during the bonding process to avoid deformation of the plastic liner shoulder caused by single-sided force; and the applied bonding pressure can be mechanically regulated to maintain the bonding stability and consistency between the plastic liner and the metal valve seat.

[0004] In a first aspect, a gas cylinder metal valve seat installation device is provided, comprising: an installation platform, a flip mechanism, a lifting platform assembly, and an inflating device; The installation platform is provided with at least one installation station for carrying the plastic liner; The flip mechanism is arranged on both sides of the installation platform; the flip mechanism comprises a flip motor and a rotating shaft; the flip motor is arranged at one end of the installation platform, and the rotating shaft is arranged along the length direction of the installation platform; The lifting platform assembly is arranged on the rotating shafts on both sides of the installation platform, corresponding to the installation stations; the lifting platform assembly includes a first installation plate, a lifting mechanism, a second installation plate, and a metal valve seat fixing platform; the first installation plate is provided with a lifting mechanism; the lifting mechanism is connected to the second installation plate and controls the lifting of the second installation plate; the second installation plate is provided with a metal valve seat fixing platform for fixing the metal valve seat; The inflation device includes an air pipe connector, which is connected to a metal valve seat fixing platform. When the metal valve seat is bonded to the plastic liner, the air pipe connector can be used to inflate the plastic liner to provide pressure from the inside to the outside.

[0005] In another embodiment, four groups of lifting mechanisms are arranged on the lifting platform assembly, two groups are arranged on the side close to the installation platform, and two groups are arranged on the side away from the installation platform.

[0006] In another embodiment, the lifting mechanism includes a lifting motor, a lifting slider, and a screw rod. The lifting motor is arranged on the first mounting plate, the lifting slider is fixed to the bottom of the second mounting plate, and the screw rod is connected to the lifting motor and the lifting slider and passes through the second mounting plate.

[0007] In another embodiment, the first mounting plate is an L-shaped mounting plate, including a vertical plate and a horizontal plate; the vertical plate is fixed to the rotating shaft by bolts; and the lifting motor of the lifting mechanism is fixed on the horizontal plate.

[0008] In another embodiment, the lifting platform assembly also includes a metal valve seat rotating mechanism, which includes a rotating motor, a driving wheel, a belt, and a metal valve seat rotating platform; the rotating motor is arranged on the lower bottom surface of the second mounting plate; the driving wheel is arranged on the upper surface of the second mounting plate and is coaxial with the rotating motor; the metal valve seat rotating platform is clamped in the metal valve seat fixing platform through a ball bearing; the belt connects the driving wheel and the metal valve seat rotating platform.

[0009] In another embodiment, the installation platform further includes a conveyor belt; a positioning slot is also provided on the conveyor belt to locate the installation position of the plastic liner on the installation platform.

[0010] In another embodiment, the lifting platform assembly further includes a plastic liner locking structure; the plastic liner locking structure is arranged at the upper ends of the two screw rods away from the mounting platform.

[0011] In another embodiment, the gas cylinder metal valve seat installation equipment further includes a gluing device; the gluing device is disposed above the lifting platform assembly.

[0012] In another embodiment, the gas cylinder metal valve seat installation equipment also includes a plastic liner transfer robot arm, which is arranged at one end of the installation platform and can grab the plastic liner and place it on the conveyor belt of the installation platform.

[0013] In a second aspect, a method for installing a metal valve seat of a gas cylinder is provided, based on the above-mentioned installation device, comprising: Step 1: Place the plastic liner on the installation station on the installation platform, and install the metal valve seat on the metal valve seat fixing platforms on both sides of the installation station; Step 2: Apply glue to the metal valve seat; Step 3: Start the flip motors on both sides of the installation platform, flip the lifting platform assembly 90° toward the installation platform, so that the metal valve seat is coaxial with the plastic liner; Step 4: Start the lifting mechanism so that the second mounting plate drives the metal valve seat toward the plastic liner, and continuously applies pressure so that the glue-coated area of ​​the metal valve seat is in full contact with the mouth of the plastic liner; Step 5: Bonding: The inflating device inflates and pressurizes the plastic liner, and at the same time, the lifting platform assembly pressurizes the plastic liner through the metal valve seat. After the bonding pressure is reached, the pressure is maintained until the metal valve seat and the plastic liner are firmly bonded; Step 6: End of pressure maintenance; start the lifting mechanism to reset the second mounting plate, separate the metal valve seat from the metal valve seat fixing platform, and stop inflation at the same time to complete the bonding of the metal valve seat and the plastic liner.

[0014] When the metal valve seat is coated with glue in step 2, it can be manual or automatic coating. For automatic coating, the metal valve seat is fixed and the coating port of the coating device moves in a circular motion along the metal valve seat to complete the coating. Alternatively, preferably, the coating port of the coating device is fixed and the metal valve seat rotating mechanism is started to rotate the metal valve seat to complete the coating.

[0015] The step 5 also includes starting the metal valve seat rotating mechanism before pressure holding to drive the metal valve seat to rotate so that the glue layer between the metal valve seat and the plastic liner is evenly distributed, and then stopping the rotation to enter pressure holding bonding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The gas cylinder metal valve seat installation device of the present invention completes the bonding of the metal valve seat and the plastic liner by setting a lifting platform assembly to cooperate with the installation platform. Compared with manual bonding, the bonding quality can be stably controlled; (2) By providing an inflating device, air is inflated to provide pressure to the plastic liner when bonding the metal valve seat and the plastic liner, and the pressure applied to the metal valve seat by the external lifting platform assembly is combined to form an internal and external double clamping force on the bonding area, thereby avoiding defects such as single-sided pressure application, deformation of the shoulder of the plastic liner, and affecting the bonding quality in the prior art; (3) By setting up an automatic gluing device, the amount of glue applied can be strictly controlled to ensure the thickness of the glue layer in the bonding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the forces acting when the inner liner and the bottle valve seat are bonded in the prior art; Attached Figure 2 Schematic diagram of equipment for installing metal valve seats of gas cylinders; Attached Figure 3 Top view of the equipment for installing the metal valve seat of the gas cylinder; Attached Figure 4 This is a schematic diagram of the lifting platform installation; Attached Figure 5 This is a schematic diagram of the lifting platform structure; Attached Figure 6 This is a cross-sectional view of the lifting platform assembly and the metal valve seat; Attached Figure 7 This is the overall schematic diagram of the working coordination of the metal valve seat installation equipment for gas cylinders; Attached Figure 8 A partial schematic diagram of the working coordination of the metal valve seat installation equipment for gas cylinders; Among them: 1-installation platform, 11-installation station, 111-positioning slot, 2-flipping mechanism, 21-flipping motor, 22-rotating axis, 3-lifting platform assembly, 31-first installation plate, 311 vertical plate, 312-horizontal plate, 32-lifting mechanism, 321-lifting motor, 322-lifting slider, 323-screw rod, 33-second installation plate, 34-metal valve seat fixing platform, 35-metal valve seat rotating mechanism, 36-plastic liner locking rope, 351-rotating motor, 352-driving wheel, 353-belt, 354-metal valve seat rotating platform, 4-inflating device, 41-gas pipe connector, 5-plastic liner, 6-metal valve seat. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0021] Example 1

[0022] This embodiment provides a gas cylinder metal valve seat installation device.

[0023] like Figure 2 - As shown in FIG8 , the gas cylinder metal valve seat installation device provided by the present invention includes a mounting platform 1, a flip mechanism 2, a lifting platform assembly 3, and an inflating device 4; The installation platform 1 is provided with a conveyor belt, and a plurality of installation stations 11 are provided on the conveyor belt. The installation stations 11 are provided with positioning slots 111, and one installation station 11 carries one plastic liner 5; The flipping mechanism 2 is arranged on both sides of the mounting platform 1; the flipping mechanism 2 includes a flipping motor 21 and a rotating shaft 22; the flipping motor 21 is arranged at one end of the mounting platform 1, and the rotating shaft 22 is arranged along the length direction of the mounting platform 1 and extends to the other end of the mounting platform 1, and the length is adapted to the length of the mounting platform 1; the flipping motor 21 can drive the rotating shaft 22 to rotate clockwise or counterclockwise.

[0024] The lifting platform assembly 3 is provided with several groups, and the same number is arranged on the rotating shaft 22 on both sides of the installation platform 1, corresponding to the installation station 11; the lifting platform assembly 3 can be turned clockwise or counterclockwise along with the rotating shaft.

[0025] The lifting platform assembly 3 includes a first mounting plate 31, a lifting mechanism 32, a second mounting plate 33, a metal valve seat fixing platform 34, and a metal valve seat rotating mechanism 35; the first mounting plate 31 is an L-shaped mounting plate, including a vertical plate 311 and a horizontal plate 312, the side of the vertical plate 311 is provided with a slot that cooperates with the rotating shaft 22, and is then fixedly connected to the rotating shaft 22 by bolts; four groups of lifting mechanisms 32 are arranged on the horizontal plate 312, two groups are arranged on the side close to the mounting platform 1, and two groups are arranged on the side away from the mounting platform 1; the lifting mechanism 32 includes a lifting motor 321, a lifting slider 322, and a screw rod 323, the lifting motor 321 is arranged on the horizontal plate 312, and the screw rod 323 is connected to the lifting motor 3 21 is connected, and passes through the second mounting plate 33, the lifting slider 322 is connected with the screw rod 323, and is fixed to the bottom of the second mounting plate 33 by bolt connection; the metal valve seat fixing platform 34 is set on the upper surface of the second mounting plate 33; the metal valve seat rotating mechanism 35 includes a rotating motor 351, a driving wheel 352, a belt 353, and a metal valve seat rotating platform 354; the rotating motor 351 is set on the lower bottom surface of the second mounting plate 33; the driving wheel 352 is set on the upper surface of the second mounting plate 33 and is coaxial with the rotating motor 351; the metal valve seat rotating platform 354 is clamped in the metal valve seat fixing platform 34 through a ball bearing; the belt 353 connects the driving wheel 352 and the metal valve seat rotating platform 354. In the lifting platform assembly 3, the second mounting plate 33 is controlled by the lifting mechanism 32 and can perform lifting and lowering movements relative to the first mounting plate 31; the metal valve seat rotating platform 354 can be controlled by the rotating motor 351 to rotate clockwise or counterclockwise.

[0026] The lifting platform assembly 3 further includes a plastic inner locking rope 36 , and the locking rope 36 is arranged at the upper end of the two screw rods 323 on the side away from the installation platform 1 .

[0027] The inflation device 4 includes an air pipe connector 41, which is fixed to the bottom of the second mounting plate 33 and the end of the air pipe connector 41 passes through the second mounting plate 33 and extends into the metal valve seat rotating platform 354. When the metal valve seat 6 is bonded to the plastic liner 5, the air pipe connector 41 can be used to provide pressure from the inside to the outside to inflate the plastic liner 5.

[0028] The gas cylinder metal valve seat installation device also includes a glue coating device (not shown in the figure); the glue coating device is arranged above the lifting platform assembly.

[0029] The gas cylinder metal valve seat installation device also includes a plastic liner transfer robot arm (not shown in the figure), which is arranged at one end of the installation platform and can grab the plastic liner and place it on the conveyor belt of the installation platform.

[0030] The gas cylinder metal valve seat installation equipment also includes a metal valve seat transfer robot arm (not shown in the figure), which can be set on one side of the lifting platform assembly 3 and is used to grab the metal valve seat and place it on the metal valve seat rotating mechanism.

[0031] Example 2

[0032] This embodiment provides a metal valve seat installation method based on the installation device of embodiment 1, comprising: Step 1: Place the plastic liner on the installation station on the installation platform, and install the metal valve seat on the metal valve seat fixing platforms on both sides of the installation station; Step 2: Apply glue to the metal valve seat; Step 3: Start the flip motors on both sides of the installation platform, flip the lifting platform assembly 90° toward the installation platform, so that the metal valve seat is coaxial with the plastic liner; Step 4: Start the lifting mechanism so that the second mounting plate drives the metal valve seat toward the plastic liner, and continuously applies pressure so that the glue-coated area of ​​the metal valve seat is in full contact with the mouth of the plastic liner; Step 5: Bonding: The inflating device inflates and pressurizes the plastic liner, and at the same time, the lifting platform assembly pressurizes the plastic liner through the metal valve seat. After the bonding pressure is reached, the pressure is maintained until the metal valve seat and the plastic liner are firmly bonded; Step 6: End of pressure maintenance; start the lifting mechanism to reset the second mounting plate, separate the metal valve seat from the metal valve seat fixing platform, and stop inflation at the same time to complete the bonding of the metal valve seat and the plastic liner.

[0033] When the metal valve seat is coated with glue in step 2, it can be manual or automatic coating. For automatic coating, the metal valve seat is fixed and the coating port of the coating device moves in a circular motion along the metal valve seat to complete the coating. Alternatively, preferably, the coating port of the coating device is fixed and the metal valve seat rotating mechanism is started to rotate the metal valve seat to complete the coating.

[0034] The step 5 also includes starting the metal valve seat rotating mechanism before pressure holding to drive the metal valve seat to rotate so that the glue layer between the metal valve seat and the plastic liner is evenly distributed, and then stopping the rotation to enter pressure holding bonding.

[0035] Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas cylinder metal valve seat installation device, characterized in that: include: Installation platform, turnover mechanism, lifting platform assembly, and inflatable device; The installation platform is provided with at least one installation station; The flip mechanism is arranged on both sides of the installation platform; the flip mechanism comprises a flip motor and a rotating shaft; the rotating shaft is arranged along the length direction of the installation platform; The lifting platform assembly is arranged on the rotating shafts on both sides of the installation platform, corresponding to the installation stations; the lifting platform assembly includes a first installation plate, a lifting mechanism, a second installation plate, and a metal valve seat fixing platform; the first installation plate is provided with a lifting mechanism; the lifting mechanism is connected to the second installation plate and controls the lifting of the second installation plate; the second installation plate is provided with a metal valve seat fixing platform for fixing the metal valve seat; The inflation device comprises an air delivery pipe connector, which is connected to a metal valve seat fixing platform.

2. A gas cylinder metal valve seat installation device according to claim 1, characterized in that: Four groups of lifting mechanisms are arranged on the lifting platform assembly, two groups are arranged on the side close to the installation platform, and two groups are arranged on the side away from the installation platform.

3. The metal valve seat installation device for a gas cylinder according to claim 2, characterized in that: The lifting mechanism includes a lifting motor, a lifting slider, and a screw rod. The lifting motor is arranged on a first mounting plate, the lifting slider is mounted on the bottom of a second mounting plate, and the screw rod is connected to the lifting motor and the lifting slider and passes through the second mounting plate.

4. The metal valve seat installation device for a gas cylinder according to claim 1, characterized in that: The first mounting plate is an L-shaped mounting plate, comprising a vertical plate and a horizontal plate; the vertical plate is fixed to the rotating shaft; and a lifting mechanism is arranged on the horizontal plate.

5. The metal valve seat installation device for a gas cylinder according to claim 1, characterized in that: The lifting platform assembly also includes a metal valve seat rotating mechanism, which includes a rotating motor, a driving wheel, a belt, and a metal valve seat rotating platform; the rotating motor is arranged on the lower bottom surface of the second mounting plate; the driving wheel is arranged on the upper surface of the second mounting plate and is coaxial with the rotating motor; the metal valve seat rotating platform is clamped in the metal valve seat fixing platform through a ball bearing; the belt connects the driving wheel and the metal valve seat rotating platform.

6. The metal valve seat installation device for a gas cylinder according to claim 1, characterized in that: The installation platform also includes a conveyor belt; a positioning slot is also arranged on the conveyor belt.

7. The metal valve seat installation device for a gas cylinder according to claim 2, characterized in that: The lifting platform assembly also includes a plastic liner locking structure; the plastic liner locking structure is arranged at the upper ends of two screw rods away from the mounting platform.

8. The metal valve seat installation device for a gas cylinder according to claim 1, characterized in that: It also includes a glue coating device; the glue coating device is arranged above the lifting platform assembly.

9. The metal valve seat installation device for a gas cylinder according to claim 1, characterized in that: It also includes a plastic liner transfer robot arm, which is arranged at one end of the installation platform and can grab the plastic liner and place it on the conveyor belt of the installation platform.

10. A method for installing a metal valve seat of a gas cylinder, based on the installation device according to any one of claims 1 to 9, comprising: Step 1: Place the plastic liner on the installation station on the installation platform, and install the metal valve seat on the metal valve seat fixing platforms on both sides of the installation station; Step 2: Apply glue to the metal valve seat; Step 3: Start the flip motors on both sides of the installation platform, flip the lifting platform assembly 90° toward the installation platform, so that the metal valve seat is coaxial with the plastic liner; Step 4: Start the lifting mechanism so that the second mounting plate drives the metal valve seat toward the plastic liner, and continuously applies pressure so that the glue-coated area of ​​the metal valve seat is in full contact with the mouth of the plastic liner; Step 5: Bonding: The inflating device inflates and pressurizes the plastic liner, and at the same time, the lifting platform assembly pressurizes the plastic liner through the metal valve seat. After the bonding pressure is reached, the pressure is maintained until the metal valve seat and the plastic liner are firmly bonded; Step 6: End of pressure maintenance; start the lifting mechanism to reset the second mounting plate, separate the metal valve seat from the metal valve seat fixing platform, and stop inflation at the same time to complete the bonding of the metal valve seat and the plastic liner.

11. A method for installing a metal valve seat of a gas cylinder according to claim 10, characterized in that: The step 5 also includes starting the metal valve seat rotating mechanism before pressure holding to drive the metal valve seat to rotate so that the glue layer between the metal valve seat and the plastic liner is evenly distributed, and then stopping the rotation to enter pressure holding bonding.

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