Valve body assembly device and method using pin to assemble external spring

Abstract

The present invention discloses a valve body assembly device and method for assembling an external spring using a pin, and belongs to the technical field of valve assembly equipment. The valve body assembly device for assembling an external spring using a pin comprises: a conveying device, a transporting device, a slot position detection device, a pin assembly device, and an external spring gasket feeding device. The transporting device is used to transfer the valve seat between the transporting device, the slot position detection device, and the pin assembly device. The slot position detection device is used to identify the direction of the slot portion of the valve seat, so that the transporting device matches the slot portion of the valve seat with the pin assembly device. The external spring gasket feeding device is used to transport the external gasket and the external spring into the pin assembly device. The pin assembly device is used to move the pin to the slot portion of the valve seat. The present invention realizes the automated assembly of a valve body for assembling an external spring using a pin, solving the problem that the prior art cannot automatically assemble a valve body for assembling an external spring using a pin.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve assembly equipment, and in particular relates to valve body assembly equipment and a method for assembling an external spring using a pin. Background Art

[0002] The automated valve body assembly equipment in the existing technology all uses an external retaining spring to assemble the external spring on the valve seat. However, a high-precision valve body assembly process used in cooling systems of electronic equipment such as servers is to open a slot on the side of the valve seat, and then use two small pins to insert into the slot, and then use the elastic force of the external spring to fix the pins, external gasket, external spring and valve seat. The pins have a different shape and are too small in size compared to the external retaining spring, so they cannot be assembled using the automated valve body assembly equipment and methods in the existing technology. It is necessary to provide a valve body assembly equipment and method that can automatically assemble valve bodies that use pins to assemble external springs. Summary of the Invention

[0003] Purpose of the invention: To provide a valve body assembly device and method using a pin to assemble an external spring, so as to solve the problem that the existing technology cannot automatically assemble a valve body using a pin to assemble an external spring.

[0004] The technical solution of the present invention is: a valve body assembly device using a pin to assemble an external spring comprises: a conveying device, a handling device, a slot position detection device, a pin assembly device and an external spring gasket feeding device.

[0005] The handling device is used to transfer the valve seat between the conveying device, the slot position detection device and the pin assembly device.

[0006] The slot position detection device is used to identify the direction of the slot portion of the valve seat, so that the conveying device can match the slot portion of the valve seat with the pin assembly device.

[0007] The outer spring gasket loading device is used to transport the outer gasket and the outer spring into the pin assembly device. When the transport device moves the valve seat into the pin assembly device, the slot portion of the valve seat passes through the outer spring and the outer gasket in sequence, and the slot portion of the valve seat is spaced a predetermined distance from the outer gasket.

[0008] The pin assembly device is used to move the pin to a position where the valve seat is provided with a clamping groove.

[0009] In a further embodiment, the pin assembly device includes: a positioning seat, a pin feeding mechanism and a pin pushing mechanism.

[0010] The pin feeding mechanism and the pin pushing mechanism are arranged at the side of the positioning seat.

[0011] The positioning seat is provided with a valve seat positioning cavity and a pin positioning cavity. The pin positioning cavity is arranged at a side position of the valve seat positioning cavity. The pin positioning cavity is communicated with the valve seat positioning cavity.

[0012] When the valve seat moves into the valve seat positioning cavity, the clamping groove portion of the valve seat is matched with the pin positioning cavity.

[0013] The pin feeding mechanism is used to move the pin into the pin positioning cavity along the axial direction of the pin.

[0014] The pin pushing mechanism is used to move the pin into the valve seat positioning cavity along the radial direction of the pin, so that the pin cooperates with the portion of the valve seat provided with a slot, and positions the pin through the positioning seat. The portion of the valve seat provided with a slot is accommodated by the valve seat positioning cavity. The pin feeding mechanism can move the pin into the pin positioning cavity along the axial direction of the pin, limit the pin through the pin positioning cavity, and then move the pin into the valve seat positioning cavity along the radial direction of the pin, so that the pin is pushed into the valve seat slot along its radial direction, so that the pin is limited by the pin positioning cavity throughout the entire process, which solves the problem of low assembly efficiency caused by the pin falling or misalignment during the assembly process of the prior art.

[0015] In a further embodiment, the pin positioning cavity includes an axial movement hole, a pin positioning hole and a radial movement hole.

[0016] The axial movement hole is arranged at the end of the pin positioning hole, the pin positioning hole is arranged at the side of the valve seat positioning cavity and is connected to the valve seat positioning cavity, and the radial movement hole is arranged on the side of the pin positioning hole away from the valve seat positioning cavity.

[0017] When the valve seat moves into the valve seat positioning cavity, the clamping groove portion of the valve seat is matched with the radial moving hole.

[0018] The axial movement hole is extended along the axial direction of the pin.

[0019] The pin positioning hole and the radial movement hole are extended along the radial direction of the pin, and the movement of the pin in each direction can be carried out in multi-directional limitation through the axial movement hole and the pin positioning hole.

[0020] In a further embodiment, the valve seat positioning cavity includes: an outer gasket step portion, the pin positioning cavity is connected with the valve seat positioning cavity below the outer gasket step portion, and the upper surface of the outer gasket step portion is connected with the pin positioning cavity and the valve seat positioning cavity is arranged at a predetermined distance. The outer gasket step portion cooperates with the conveying device to compress the outer spring, so that the outer gasket and the valve seat having the slot portion are arranged at a predetermined distance to reduce interference in the process of moving the pin to the valve seat having the slot portion, so as to reduce interference in the process of moving the pin to the valve seat having the slot portion.

[0021] In a further embodiment, the assembly equipment also includes: a valve seat loading device, a valve core loading device, a valve seat sleeve inner sealing ring device, a guide sleeve loading device, an inner spring loading device, a valve core sleeve outer sealing ring device, an inner retaining spring loading device, an outer ring loading device, an outer retaining spring loading device, a pressure testing device and an airtightness testing device.

[0022] The valve seat feeding device, valve core feeding device, valve seat sleeve inner sealing ring device, guide sleeve feeding device, inner spring feeding device, valve core sleeve outer sealing ring device, inner retaining spring feeding device, conveying device, outer spring gasket feeding device, outer ring feeding device, outer retaining spring feeding device, pressure testing device and air tightness testing device are sequentially arranged on one side of the conveying device. By assembling the valve seat and valve core, assembling the valve seat and outer spring, and assembling the valve seat and outer ring in sequence, the electroplating layer of the outer ring can be protected to reduce scratches on the outer ring.

[0023] In a further embodiment, the assembly equipment further includes: a workpiece loading device.

[0024] The workpiece loading device includes: a workpiece moving assembly and a workpiece clamp. Multiple workpiece moving assemblies are arranged on one side of the conveying device. Two workpiece clamps are installed on each workpiece moving assembly. The position of the workpiece moving assembly is coordinated with the position of the valve seat sleeve inner sealing ring device, the guide sleeve loading device, the inner spring loading device, the valve core sleeve outer sealing ring device, the outer ring loading device, the outer retaining spring loading device, the pressure testing device and the airtightness testing device.

[0025] The workpiece moving assembly is used to drive the two workpiece clamps to flow between the conveying device and each device. Through the cooperation of the conveying device, the workpiece moving assembly and the workpiece clamps, when the conveying device drives the valve seat and the valve core to move, each device can work on the workpiece synchronously, reducing waiting time and greatly improving work efficiency.

[0026] In a further embodiment, the conveying device is an annular conveying device.

[0027] The valve seat feeding device also includes: a valve seat feeding and conveying mechanism, a valve seat tray lateral displacement mechanism, a valve seat tray lifting mechanism, a valve seat silo, a valve seat empty tray silo and a valve body finished product silo.

[0028] The three silos are distributed along the transverse direction, a material tray is provided in the silo, the valve seat loading and transporting mechanism and the material tray transverse displacement mechanism are arranged on one side of the silo, and at least one of the silos is provided with a material tray lifting mechanism.

[0029] The tray lateral displacement mechanism is used to allow the tray to flow between the three silos, and the tray lifting mechanism is used to adjust the height of the tray in the silo, so that the valve seat loading and transporting mechanism can obtain the valve seat from the tray on the top of the valve seat silo, so that the valve seat tray lateral displacement mechanism can obtain the empty tray from the top of the valve seat silo, so that the empty tray can be moved to the empty tray silo, and then the empty tray is moved to the valve body finished product silo to be reused to carry the valve body finished product. Compared with the existing technology, the circular motion of the annular conveying device can be combined with the valve seat loading device to make the empty tray reused, and there is no need to set up two additional areas for unloading, which greatly reduces the volume of the equipment.

[0030] In a further embodiment, the assembly equipment further comprises: a press.

[0031] The inner retaining spring feeding device is arranged on one side of the press.

[0032] The press comprises: a valve seat positioning mechanism, a lifting positioning mechanism and a pressing mechanism. The valve seat positioning mechanism is arranged below the lifting positioning mechanism, the lifting positioning mechanism is arranged below the pressing mechanism, and the lifting positioning mechanism is provided with a guide hole.

[0033] The inner retaining spring feeding device is used to place the inner retaining spring in the guide hole of the lifting and positioning mechanism.

[0034] The valve seat positioning mechanism is used to apply a clamping force to the valve seat, and the pressing mechanism is used to press the retaining spring in the guide hole into the valve seat. Compared with the prior art of placing the valve seat in the fixed hole, the valve seat positioning mechanism is used to apply a clamping force to the valve seat, which reduces the probability of the valve seat deviating laterally, thereby reducing the probability of the inner spring and valve core scratching the inner wall of the valve seat. The cooperation of the lifting positioning mechanism and the pressing mechanism solves the problem that the prior art directly uses a moving component and a clamp to install the inner spring, which easily causes the inner spring, valve core and valve seat to deviate laterally and scratch the inner wall of the valve seat, resulting in a decrease in the sealing performance of the assembled valve body.

[0035] In a further embodiment, the lifting and positioning mechanism includes: a lifting power member, a lifting plate, a positioning power member and an inner retaining spring mounting positioning member.

[0036] The lifting plate is installed on the lifting power member, the positioning power member is installed on the lifting plate, the two inner retaining spring mounting positioning members are installed on the positioning power member, and the lifting power member is used to drive the lifting plate to move up and down.

[0037] When the lifting power component drives the inner retaining spring installation positioning component to move to the position cooperating with the valve core, the positioning power component drives the two inner retaining spring installation positioning components to enclose and form a guide hole above the valve seat. Through the cooperation of the lifting power component, the lifting plate, the positioning power component and the inner retaining spring installation positioning component, the inner retaining spring installation positioning component can avoid the valve core during the downward movement of the inner retaining spring installation positioning component. When the inner retaining spring installation positioning component moves to the position cooperating with the valve core, it encloses and forms a guide hole to position the retaining spring and assemble the retaining spring. Compared with the prior art of directly pressing down to assemble the inner retaining spring, the probability of damage to the valve core surface and the inner wall of the valve seat is further reduced.

[0038] The assembly method of the valve body assembly equipment using a pin to assemble the external spring includes:

[0039] Use the outer spring gasket loading device to convey the outer gasket and the outer spring to the pin assembly device, use the handling device to move the valve seat on the conveying device to the position of the slot position detection device, and use the slot position detection device to identify the direction of the slot portion of the valve seat.

[0040] Then the transport device moves the slotted portion of the valve seat to a position that cooperates with the pin assembly device, and the transport device allows the slotted portion of the valve seat to pass through the outer spring and the outer gasket in sequence, and the slotted portion of the valve seat is spaced a predetermined distance from the outer gasket.

[0041] Then, a pin assembly device is used to move the pin along its radial direction to a position where a clamping groove is provided on the valve seat.

[0042] Then the handling device moves the valve seat on the pin assembly device to the conveying device. At this time, the elastic force of the outer spring is used to connect the outer gasket with the pin, so that the outer gasket and the outer spring are limited between the step portion of the pin and the valve seat. Through the cooperation of the handling device, the pin assembly device and the outer spring, the outer spring can be compressed before the pin is installed, so that the outer gasket and the valve seat with the slot are set at a predetermined distance to reduce interference in the process of moving the pin to the valve seat with the slot portion. After the pin is installed, the elastic force of the outer spring can be used to limit the outer gasket and the outer spring between the step portion of the pin and the valve seat.

[0043] The beneficial effects of the present invention are as follows: the present application moves the valve seat into the working range of the handling device through the conveying device, and then the valve seat is provided with a slot portion that cooperates with the pin assembly device through the cooperation of the handling device, the slot position detection device and the pin assembly device. The outer spring is compressed through the cooperation of the handling device, the pin assembly device, the valve seat, the outer spring and the outer gasket, so that the outer gasket and the slot portion of the valve seat are spaced apart by a predetermined distance, so as to reduce interference in the process of moving the pin to the slot portion of the valve seat, thereby realizing the automatic assembly of the valve body using the pin to assemble the outer spring, and solving the problem that the existing technology cannot automatically assemble the valve body using the pin to assemble the outer spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall axonometric structure of the present invention.

[0045] Figure 2 It is a schematic diagram of the coordinated structure of the transport device, the slot position detection device and the pin assembly device of the present invention.

[0046] Figure 3 This invention Figure 2 Schematic diagram of the local enlarged structure at point A.

[0047] Figure 4 It is a schematic diagram of the matching structure of the positioning seat and the pin pushing mechanism of the present invention.

[0048] Figure 5 It is a schematic diagram of the axonometric structure of the positioning seat of the present invention.

[0049] Figure 6 It is a schematic diagram of the axonometric structure of the pin feeding mechanism of the present invention.

[0050] Figure 7 It is a schematic diagram of the coordinated structure of the workpiece feeding device, the inner retaining spring feeding device and the press of the present invention.

[0051] Figure 8 It is a schematic cross-sectional structural diagram of a workpiece feeding device and a press of the present invention.

[0052] Figure 9 It is a schematic diagram of the coordinated structure of the pressing mechanism, the inner retaining spring, two inner retaining spring mounting positioning pieces, the valve core, the spring, the guide sleeve and the valve seat positioning mechanism of the present invention.

[0053] Figure 10 It is a schematic diagram of the axonometric structure of the valve seat feeding device of the present invention.

[0054] Figure 11 It is a schematic diagram of the axonometric structure of the valve core feeding device of the present invention.

[0055] The reference numerals shown in the figure are: valve seat feeding device 1, valve seat feeding and conveying mechanism 11, valve seat material tray lateral displacement mechanism 12, valve seat material tray lifting mechanism 13, valve core feeding device 2, valve core feeding and conveying mechanism 21, valve core material tray lifting mechanism 22, valve core material tray vertical cylinder 221, valve core material tray side stop 222, valve seat sleeve inner sealing ring device 3, guide sleeve feeding device 4, inner spring feeding device 5, valve core sleeve outer sealing ring device 6, inner retaining spring feeding device 7, conveying device 8, card slot position detection device 9, optical fiber sensor 91, detection positioning member 92, visual camera 93, pin assembly device 10, positioning seat 101, axial moving hole 1011, pin positioning hole 1012, radial moving hole 1013, outer gasket step 1014, pin feeding mechanism 102, pin vibration disk 1021, loading radial power source 1022, loading radial moving block 1023, loading axial power source 1024, pin 1025, pin pushing mechanism 103, radial power source 1031, push block 1032, outer spring gasket loading device 11, outer ring loading device 12, outer retaining spring loading device 13, pressure testing device 14, airtightness testing device 15, conveying device 16, press 17, lifting and positioning mechanism 171, lifting power part 1711, lifting plate 1712, positioning power part 1713, inner retaining spring installation positioning part 1714, pressing mechanism 172, valve seat positioning mechanism 173, valve seat positioning power source 1731, valve seat positioning moving part 1732, valve seat positioning fixing part 1733, workpiece feeding device 18, workpiece moving assembly 181, workpiece clamp 182. DETAILED DESCRIPTION

[0056] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0057] The present invention discloses a valve body assembly device and method for assembling an external spring using a pin. The device is provided with a control device such as a PLC, and its components such as a motor, a cylinder and a sensor are connected to the control device. The control device controls the coordinated operation of various devices to realize the automatic assembly of the valve body for assembling an external spring using a pin, thereby solving the problem that the existing technology cannot automatically assemble the valve body for assembling an external spring using a pin.

[0058] like Figure 1The valve body assembly equipment shown in the figure uses a pin to assemble an external spring, including: a valve seat loading device 1, a valve core loading device 2, a valve seat sleeve inner sealing ring device 3, a guide sleeve loading device 4, an inner spring loading device 5, a valve core sleeve outer sealing ring device 6, an inner retaining spring loading device 7, a conveying device 16, a handling device 8, a slot position detection device 9, a pin assembly device 10, an outer spring gasket loading device 11, an outer ring loading device 12, an outer retaining spring loading device 13, a pressure testing device 14, an airtightness testing device 15 and a workpiece loading device 18.

[0059] The valve seat feeding device 1, the valve core feeding device 2, the valve seat sleeve inner sealing ring device 3, the guide sleeve feeding device 4, the inner spring feeding device 5, the valve core sleeve outer sealing ring device 6, the inner retaining spring feeding device 7, the conveying device 8, the outer spring gasket feeding device 11, the outer ring feeding device 12, the outer retaining spring feeding device 13, the pressure testing device 14 and the airtightness testing device 15 are arranged in sequence on one side of the conveying device 16.

[0060] The workpiece loading device 18 includes: a workpiece moving component 181 and a workpiece clamping claw 182. Multiple workpiece moving components 181 are arranged on one side of the conveying device 16. Two workpiece clamping claws 182 are installed on each workpiece moving component 181. The position of the workpiece moving component 181 is coordinated with the position of the valve seat sleeve inner sealing ring device 3, the guide sleeve loading device 4, the inner spring loading device 5, the valve core sleeve outer sealing ring device 6, the outer ring loading device 12, the outer retaining spring loading device 13, the pressure testing device 14 and the airtightness testing device 15. The workpiece moving component 181 is used to drive the two workpiece clamping claws 182 to flow between the conveying device 16 and each device. The workpiece moving component 181 can be a rotating power source such as a motor or a rotary cylinder installed on the manipulator, such as Figure 7 The workpiece moving assembly 181 shown is a combination of a rotary cylinder and a lifting cylinder installed on the frame of the assembly equipment and arranged on one side of the conveying device 16. In other embodiments, the workpiece moving assembly 181 can also be a rotating power source such as a motor or a rotary cylinder installed on the displacement assembly of the valve seat sleeve inner sealing ring device 3 and the valve core sleeve outer sealing ring device 6, which can enable a workpiece clamp 182 to move the valve seat or valve core without a sealing ring from the conveying device 16 to a position cooperating with the sealing ring assembly machine, and enable another workpiece clamp 182 to move the valve seat or valve core with a sealing ring from the sealing ring assembly machine to the conveying device 16 or the valve seat.

[0061] like Figure 2 The slot position detection device 9 and the pin assembly device 10 shown are arranged on one side of the conveying device 8, and the external spring gasket loading device 11 is arranged on one side of the pin assembly device 10. The conveying device 8 is used to allow the valve seat to flow between the conveying device 16, the slot position detection device 9 and the pin assembly device 10.

[0062] The slot position detection device 9 is used to identify the direction of the slot portion of the valve seat, so that the handling device 8 matches the slot portion of the valve seat with the pin assembly device 10, wherein the slot position detection device 9 includes a fiber optic sensor 91, a detection positioning member 92 and a visual camera 93. The slot is a through-slot structure connecting the two sides of the valve seat. The number of fiber optic sensors 91 matches the number of slots of the valve seat. The visual camera 93 and multiple fiber optic sensors 91 are distributed around the circumference of the detection positioning member 92. When the handling device 8 moves the valve seat to the detection positioning member 92, the handling device 8 drives the valve seat to rotate, and the slot position of the valve seat is detected by the fiber optic sensor 91. The visual camera 93 is used to take pictures to confirm and reduce the error rate, such as Figure 2 The detection positioning member 92 shown is an axis that can be inserted into the valve seat. The detection positioning member 92 is used to assist in manual adjustment of the valve seat to confirm its position. Compared with the existing technology that only uses the visual camera 93 to detect the slot position, the complexity of the visual camera 93 detection algorithm is greatly reduced.

[0063] The outer spring gasket loading device 11 is used to transport the outer gasket and the outer spring into the pin assembly device 10. When the conveying device 8 moves the valve seat into the pin assembly device 10, the slot portion of the valve seat passes through the outer spring and the outer gasket in sequence, and the slot portion of the valve seat is set at a predetermined distance from the outer gasket.

[0064] The pin assembly device 10 is used to move the pin to the portion of the valve seat where the clamping groove is provided.

[0065] like Figure 2 The pin assembly device 10 shown includes a positioning seat 101 , a pin loading mechanism 102 and a pin pushing mechanism 103 .

[0066] The pin feeding mechanism 102 and the pin pushing mechanism 103 are arranged at the side of the positioning seat 101 .

[0067] The positioning seat 101 is provided with a valve seat positioning cavity and a pin positioning cavity. The pin positioning cavity is arranged at a side position of the valve seat positioning cavity, and the pin positioning cavity is communicated with the valve seat positioning cavity.

[0068] When the valve seat moves into the valve seat positioning cavity, the clamping groove portion of the valve seat is matched with the pin positioning cavity.

[0069] The pin feeding mechanism 102 is used to move the pin into the pin positioning cavity along the axial direction of the pin. The pin feeding mechanism 102 includes: a pin vibration disk 1021, a feeding radial power source 1022, a feeding radial moving block 1023, a feeding axial power source 1024 and an insertion pin 1025. The feeding radial power source 1022 is arranged at the discharge end of the pin vibration disk 1021, the feeding radial moving block 1023 is installed on the feeding radial power source 1022, the feeding axial power source 1024 is arranged at the side of the discharge end of the pin vibration disk 1021, the insertion pin 1025 is installed on the feeding axial power source 1024, the feeding radial moving block 1023 is provided with a pin buffer cavity, and the pin vibration disk 1021 is used to transport the pin to In the pin cache cavity, the loading radial power source 1022 is used to make the loading radial moving block 1023 flow between the cooperation position with the pin vibration disk 1021 and the cooperation position with the insertion pin 1025. When the loading radial moving block 1023 moves to the cooperation position with the moving path of the insertion pin 1025, the loading axial power source 1024 uses the insertion pin 1025 to move the pin in the pin cache cavity to the pin positioning cavity. The pin is pre-positioned and cached by the pin cache cavity of the loading radial moving block 1023, which can reduce the interference of the vibration of the pin vibration disk 1021 on the pin feeding, so that the loading axial power source 1024 and the insertion pin 1025 can simultaneously move multiple pins that cooperate with the pin positioning cavity into the pin positioning cavity.

[0070] The pin pushing mechanism 103 is used to move the pin into the valve seat positioning cavity along the radial direction of the pin, so that the pin cooperates with the groove portion of the valve seat, wherein the groove of the valve seat is connected to the inner cavity of the valve seat.

[0071] like Figure 4 and 5 The pin positioning cavity shown includes an axial movement hole 1011 , a pin positioning hole 1012 and a radial movement hole 1013 .

[0072] The axial movement hole 1011 is arranged at the end of the pin positioning hole 1012, the pin positioning hole 1012 is arranged at the side of the valve seat positioning cavity and is connected to the valve seat positioning cavity, and the radial movement hole 1013 is arranged on the side of the pin positioning hole 1012 away from the valve seat positioning cavity.

[0073] When the valve seat moves into the valve seat positioning cavity, the groove portion of the valve seat is matched with the radial moving hole 1013 .

[0074] The axial movement hole 1011 is extended along the axial direction of the pin.

[0075] The pin positioning hole 1012 and the radial movement hole 1013 are extended along the radial direction of the pin.

[0076] The inner diameter of the axial moving hole 1011 is matched with the outer diameter clearance of the pin, the upper and lower spacing of the pin positioning hole 1012 is matched with the outer diameter clearance of the pin, and the left and right spacing of the pin positioning hole 1012 is matched with the length clearance of the pin. The pin positioning hole 1012 is a contoured structure that matches the shape of the pin.

[0077] like Figure 4 The pin pushing mechanism 103 shown includes: a radial power source 1031 and a push block 1032, the push block 1032 is installed on the radial power source 1031, and the push block 1032 is set on the side of the positioning seat 101 and the pin positioning cavity. The radial power source 1031 can be a linear power mechanism such as a screw mechanism, a gear rack mechanism, and a cylinder. The radial power source 1031 is used to insert the push block 1032 into the pin positioning cavity, so that the push block 1032 moves the pin along the radial direction of the pin to the valve seat positioning cavity, as shown in FIG. Figure 4 The shown positioning seat 101 includes two symmetrically arranged pin positioning cavities, the radial power source 1031 includes a clamping cylinder, and two push blocks 1032 are installed on the clamping cylinder. The push blocks 1032 are arranged on both sides of the positioning seat 101 and in cooperation with the pin positioning cavity. In other embodiments, the clamping cylinder can be an electric clamp, and the synchronization of the radial movement of the pin is ensured by the clamping cylinder.

[0078] like Figure 5 The valve seat positioning cavity shown includes: an outer gasket step portion 1014, a pin positioning cavity below the outer gasket step portion 1014 connected to the valve seat positioning cavity, and an upper surface of the outer gasket step portion 1014 connected to the pin positioning cavity is set at a predetermined interval.

[0079] like Figure 1 The conveying device 16 shown is an annular conveying device 16, such as Figure 10 The valve seat feeding device 1 shown further includes: a valve seat feeding and transporting mechanism 11, a valve seat tray lateral displacement mechanism 12, a valve seat tray lifting mechanism 13, a valve seat silo, a valve seat empty tray silo and a valve body finished product silo.

[0080] The three silos are distributed in the transverse direction. A material tray is provided in the silo. The valve seat loading and transporting mechanism 11 and the material tray transverse displacement mechanism are provided on one side of the silo. At least one silo is provided with a material tray lifting mechanism.

[0081] The tray lateral displacement mechanism is used to make the tray flow between the three silos, and the tray lifting mechanism is used to adjust the height of the tray in the silo. The tray lifting mechanism of the valve seat loading device 1 includes: a lifting electric cylinder and a support plate. The lifting electric cylinder is installed in the silo, and the support plate is installed on the lifting electric cylinder. The lifting electric cylinder is used to drive the support plate to rise and fall, and the tray is placed on the support plate.

[0082] exist Figure 11The valve core feeding device 2 shown includes a valve core feeding and transporting mechanism 21, a valve core material tray lifting mechanism 22, three silos and a valve core material tray lateral displacement mechanism. The material tray lateral displacement mechanism of the valve core feeding device 2 is a conveyor belt mechanism arranged under the three silos. The valve core material tray lifting mechanism 22 includes: a valve core material tray vertical cylinder 221 and a valve core material tray side stop 222. The valve core material tray vertical cylinder 221 is installed under the silo, and the valve core material tray side stop 222 is installed on the side of the silo.

[0083] When the valve core material tray vertical cylinder 221 is used to raise the material tray to a predetermined position, the valve core material tray side stop 222 is inserted between the material tray and the valve core material tray lateral displacement mechanism, wherein the valve core material tray lateral displacement mechanism can be a conveyor belt mechanism, and the valve core material tray side stop 222 can be a combination of a lateral cylinder and a stop block or a one-way stop block.

[0084] like Figure 7 The valve body assembly equipment shown further includes: a press 17 , which is arranged on one side of the conveying device 16 , and an inner retaining spring feeding device 7 is arranged on one side of the press 17 .

[0085] The press 17 includes: a valve seat positioning mechanism 173, a lifting positioning mechanism 171 and a pressing mechanism 172. The valve seat positioning mechanism 173 is arranged below the lifting positioning mechanism 171, and the lifting positioning mechanism 171 is arranged below the pressing mechanism 172. The lifting positioning mechanism 171 is provided with a guide hole.

[0086] The inner retaining spring feeding device 7 is used to place the inner retaining spring in the guide hole of the lifting and positioning mechanism 171 .

[0087] In this embodiment, the valve seat on which the guide sleeve, spring and valve core are placed is moved from the conveying device 16 to the valve seat positioning mechanism 173 by the workpiece loading device 18. The valve seat positioning mechanism 173 is used to apply a clamping force to the valve seat, and the pressing mechanism 172 is used to press the retaining spring in the guide hole into the valve seat, wherein the valve seat positioning mechanism 173 includes: a valve seat positioning fixing part 1733, a valve seat positioning moving part 1732 and a valve seat positioning power source 1731. The valve seat positioning fixing part 1733 and the valve seat positioning power source 1731 are arranged below the lifting and positioning mechanism 171, and the valve seat positioning moving part 1732 is installed on the valve seat positioning power source 1731. When the valve seat loading mechanism moves the valve seat between the valve seat positioning fixing part 1733 and the valve seat positioning moving part 1732, the valve seat positioning power source 1731 drives the valve seat positioning moving part 1732 to move toward the valve seat positioning fixing part 1733 to apply a clamping force to the valve seat.

[0088] like Figure 7 The lifting and positioning mechanism 171 shown includes: a lifting power member 1711, a lifting plate 1712, a positioning power member 1713 and an inner retaining spring mounting and positioning member 1714.

[0089] The lifting plate 1712 is installed on the lifting power part 1711, the positioning power part 1713 is installed on the lifting plate 1712, two inner retaining springs are installed, and the positioning part 1714 is installed on the positioning power part 1713. The lifting power part 1711 is used to drive the lifting plate 1712 to move up and down.

[0090] When the lifting power part 1711 drives the inner retaining spring installation inner retaining spring installation positioning part 1714 to move to the position cooperating with the valve core, the positioning power part 1713 drives the two inner retaining spring installation inner retaining spring installation positioning parts 1714 to enclose above the valve seat to form a guide hole, wherein the inner retaining spring installation inner retaining spring installation positioning part 1714 and the valve core cooperating position refers to the position where the inner retaining spring installation inner retaining spring installation positioning part 1714 is in contact with the side of the valve core when the positioning power part 1713 drives the two inner retaining spring installation inner retaining spring installation positioning parts 1714 to enclose; the lifting power part 1711 can be driven first to move the inner retaining spring installation inner retaining spring installation positioning part 1714 to the position cooperating with the valve core The movable lifting plate 1712, the positioning power component 1713 and the inner retaining spring installation inner retaining spring installation positioning component 1714 move downward, and then the positioning power component 1713 drives the two inner retaining spring installation inner retaining spring installation positioning components 1714 to enclose above the valve seat to form a guide hole; the lifting power component 1711 can also first drive the lifting plate 1712, the positioning power component 1713 and the inner retaining spring installation inner retaining spring installation positioning component 1714 to move downward, and the positioning power component 1713 drives the two inner retaining spring installation inner retaining spring installation positioning components 1714 to enclose above the valve seat to form a guide hole.

[0091] like Figure 9 The guide hole shown is a conical hole that is larger at the top and smaller at the bottom, so that the retaining spring can gradually shrink and enter the valve seat during the downward movement. The downward pressing mechanism 172 includes a supporting structure, a downward pressing cylinder and a pressure head. The downward pressing cylinder is installed on the supporting structure, and the pressure head is installed on the downward pressing cylinder. The bottom end of the pressure head is a cylindrical structure that cooperates with the retaining spring. The downward pressing cylinder presses the retaining spring from the guide hole into the valve seat through the pressure head. The lifting power part 1711 and the lifting plate 1712 are installed on the supporting structure. The lifting plate 1712, the positioning power part 1713 and the inner retaining spring installation positioning part 1714 are arranged below the downward pressing cylinder.

[0092] In the above embodiment, the handling device 8 may be a robot arm or a two-axis displacement component or a three-axis displacement component.

[0093] The valve seat sleeve inner sealing ring device 3, the valve core sleeve outer sealing ring device 6 and the valve seat sleeve inner sealing ring device 3 include: a sealing ring assembly machine and a displacement component, such as Figure 1 As shown, there are two valve seat sleeve inner sealing ring devices 3 with two pairs of inner sealing rings of the valve seat sleeve. The displacement component can be a robot or a two-axis displacement component or a three-axis displacement component. The sealing ring assembly machine and the displacement component are existing technologies and are not limited here.

[0094] The guide sleeve loading device 4, the inner spring loading device 5, the inner retaining spring loading device 7, the outer spring gasket loading device 11, the outer ring loading device 12 and the outer retaining spring loading device 13 include a vibration disk and a displacement component. It is the existing technology and no further restrictions are made here. The outer spring gasket loading device 11 includes an outer spring vibration disk and an outer gasket vibration disk. The displacement component moves the outer spring vibration disk and the outer gasket vibration disk to the predetermined position of the outer gasket and the outer spring and transports them to the pin assembly device 10.

[0095] The pressure testing device 14 is a combination of a pressure sensor and a cylinder in the prior art, and the airtightness testing device 15 is a combination of a positive pressure airtightness testing device 15 and a cylinder in the prior art, and no further restrictions are imposed here.

[0096] Based on the above embodiment, the assembly method of the valve body assembly equipment using a pin to assemble an external spring includes: the conveying device 16 is an annular conveying device 16, and a plurality of workpiece positioning tooling is provided on the conveying device 16. The workpiece positioning tooling on the conveying device 16 corresponds to the positions of the valve seat loading device 1, the valve core loading device 2, the valve seat sleeve inner sealing ring device 3, the guide sleeve loading device 4, the inner spring loading device 5, the valve core sleeve outer sealing ring device 6, the inner retaining spring loading device 7, the conveying device 8, the outer spring gasket loading device 11, the outer ring loading device 12, the outer retaining spring loading device 13, the pressure testing device 14 and the airtightness testing device 15.

[0097] Each time the conveying device 16 drives the workpiece positioning fixture to move a predetermined distance, it performs the following operations:

[0098] The valve seat loading device 1 moves the unassembled valve seat on the material tray to the workpiece positioning fixture of the conveying device 16 through the valve seat loading and conveying mechanism 11, and moves the finished valve body on the workpiece positioning fixture of the conveying device 16 to the material tray through the valve seat loading and conveying mechanism 11.

[0099] The valve core loading device 2 moves the valve core to the workpiece positioning fixture of the conveying device 16 through the valve core loading and transporting mechanism 21 .

[0100] The guide sleeve loading device 4 moves the guide sleeve into the valve seat on the conveying device 16 through the displacement component.

[0101] The inner spring feeding device 5 moves the inner spring into the valve seat on the conveying device 16 through the displacement component.

[0102] The valve core sleeve outer sealing ring device 6 sleeves the sealing ring on the valve core and places the valve core in the valve seat.

[0103] The inner retaining spring feeding device 7 cooperates with the press 17 to place the inner retaining spring in the valve seat.

[0104] The handling device 8 moves the valve seat with the pin and outer spring assembled to the conveying device 16, and moves the valve seat on the conveying device 16 to a position that cooperates with the slot position detection device 9 and the pin assembly device 10 to assemble the pin and outer spring.

[0105] The outer ring loading device 12 moves the outer ring onto the valve seat of the conveying device 16 so that the outer ring is sleeved on the portion of the valve seat where the pin is installed.

[0106] The external retaining spring feeding device 13 moves the external retaining spring onto the valve seat of the conveying device 16 so that the outer ring is fixed on the valve seat to complete the assembly of the finished valve body.

[0107] The pressure testing device 14 performs a pressure test on the spring of the finished valve body.

[0108] The airtightness testing device 15 performs an airtightness test on the finished valve body.

[0109] Among them, in the process of the internal retaining spring feeding device 7 cooperating with the press 17 to place the internal retaining spring in the valve seat, a workpiece clamp 182 of the workpiece feeding device 18 moves the assembled valve seat from the valve seat positioning mechanism 173 to the conveying device 16, so that another workpiece clamp 182 of the workpiece feeding device 18 moves the valve seat with the guide sleeve, spring and valve core from the conveying mechanism to between the valve seat positioning fixing part 1733 and the valve seat positioning moving part 1732 under the lifting and positioning mechanism 171, so that the valve seat positioning power source 1731 drives the valve seat positioning moving part 1732 to move toward the valve seat positioning fixing part 1733 to apply a clamping force to the valve seat.

[0110] Then the lifting power part 1711 drives the lifting plate 1712, the positioning power part 1713 and the internal retaining spring installation positioning part 1714 to move downward. When the two internal retaining spring installation positioning parts 1714 move to the position cooperating with the valve core, the positioning power part 1713 drives the two internal retaining spring installation positioning parts 1714 to enclose above the valve seat to form a guide hole.

[0111] Then the downward pressure cylinder of the downward pressure mechanism 172 presses the retaining spring from the guide hole into the valve seat through the pressure head, and then the positioning power part 1713 drives the two internal retaining spring installation positioning parts 1714 to move in opposite directions, and the lifting power part 1711 drives the lifting plate 1712, the positioning power part 1713 and the internal retaining spring installation positioning parts 1714 to move upward, and the valve seat positioning power source 1731 drives the valve seat positioning moving part 1732 to move away from the valve seat positioning fixing part 1733, so that the workpiece clamp 182 of the workpiece loading device 18 can remove the valve seat on the valve seat positioning mechanism 173.

[0112] Among them, when the valve seat on the conveying device 16 is moved to a position cooperating with the slot position detection device 9 and the pin assembly device 10 for assembling the pin and the outer spring, the outer spring gasket loading device 11 is used to convey the outer gasket and the outer spring into the pin assembly device 10, and the handling device 8 is used to move the valve seat on the conveying device 16 to the position of the slot position detection device 9, and the slot position detection device 9 is used to identify the direction of the slot portion of the valve seat.

[0113] Then the conveying device 8 moves the slotted portion of the valve seat to a position cooperating with the pin assembly device 10, and the slotted portion of the valve seat passes through the outer spring and the outer gasket in sequence through the conveying device 8, and the slotted portion of the valve seat is spaced a predetermined distance from the outer gasket.

[0114] Then, the pin assembly device 10 is used to move the pin along its radial direction to the position where the valve seat is provided with the clamping groove.

[0115] Then the handling device 8 moves the valve seat on the pin assembly device 10 to the conveying device 16. At this time, the elastic force of the external spring is used to connect the outer gasket with the pin, so that the outer gasket and the outer spring are limited between the step portion of the pin and the valve seat.

[0116] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. Valve body assembly equipment using pins to assemble external springs, characterized in that: include: Conveying device, handling device, slot position detection device, pin assembly device and external spring washer loading device; The handling device is used to transfer the valve seat between the conveying device, the slot position detection device and the pin assembly device; The slot position detection device is used to identify the direction of the slot portion of the valve seat, so that the handling device can match the slot portion of the valve seat with the pin assembly device; The outer spring and gasket feeding device is used to convey the outer gasket and the outer spring into the pin assembly device. When the transport device moves the valve seat into the pin assembly device, the slotted portion of the valve seat passes through the outer spring and the outer gasket in sequence, and the slotted portion of the valve seat is spaced a predetermined distance from the outer gasket. The pin assembly device is used to move the pin to the position where the valve seat is provided with a slot; The pin assembly device includes: a positioning seat, a pin feeding mechanism and a pin pushing mechanism; The pin feeding mechanism and the pin pushing mechanism are arranged at the side of the positioning seat; The positioning seat is provided with a valve seat positioning cavity and a pin positioning cavity, the pin positioning cavity is provided at a side position of the valve seat positioning cavity, and the pin positioning cavity is communicated with the valve seat positioning cavity; When the valve seat moves into the valve seat positioning cavity, the slot portion of the valve seat is matched with the pin positioning cavity; The pin feeding mechanism is used to move the pin into the pin positioning cavity along the axial direction of the pin; The pin pushing mechanism is used to move the pin into the valve seat positioning cavity along the radial direction of the pin, so that the pin cooperates with the clamping groove portion of the valve seat.

2. The valve body assembly device for assembling an outer spring using a pin according to claim 1, characterized in that: The pin positioning cavity includes: an axial movement hole, a pin positioning hole and a radial movement hole; The axial movement hole is provided at the end of the pin positioning hole, the pin positioning hole is provided at the side of the valve seat positioning cavity and is communicated with the valve seat positioning cavity, and the radial movement hole is provided on the side of the pin positioning hole away from the valve seat positioning cavity; When the valve seat moves into the valve seat positioning cavity, the slot portion of the valve seat is matched with the radial moving hole; The axial movement hole is extended along the axial direction of the pin; The pin positioning hole and the radial movement hole are extended along the radial direction of the pin.

3. The valve body assembly device for assembling an outer spring using a pin according to claim 1, characterized in that: The valve seat positioning cavity includes an outer gasket step portion, the pin positioning cavity is connected to the valve seat positioning cavity below the outer gasket step portion, and the upper surface of the outer gasket step portion is connected to the pin positioning cavity at a predetermined interval.

4. The valve body assembly device for assembling an outer spring using a pin according to claim 1, characterized in that: Also includes: Valve seat feeding device, valve core feeding device, valve seat sleeve inner sealing ring device, guide sleeve feeding device, inner spring feeding device, valve core sleeve outer sealing ring device, inner circlip feeding device, outer ring feeding device, outer circlip feeding device, pressure testing device and air tightness testing device; The valve seat feeding device, valve core feeding device, valve seat sleeve inner sealing ring device, guide sleeve feeding device, inner spring feeding device, valve core sleeve outer sealing ring device, inner retaining spring feeding device, conveying device, outer spring gasket feeding device, outer ring feeding device, outer retaining spring feeding device, pressure testing device and airtightness testing device are arranged in sequence on one side of the conveying device.

5. The valve body assembly device for assembling an outer spring using a pin according to claim 4, characterized in that: Also includes: Workpiece loading device; The workpiece loading device includes: a workpiece moving assembly and a workpiece clamping claw, a plurality of the workpiece moving assemblies are arranged on one side of the conveying device, and each of the workpiece moving assemblies is equipped with two workpiece clamping claws, and the position of the workpiece moving assembly is coordinated with the position of the valve seat sleeve inner sealing ring device, the guide sleeve loading device, the inner spring loading device, the valve core sleeve outer sealing ring device, the outer ring loading device, the outer retaining spring loading device, the pressure testing device and the airtightness testing device; The workpiece moving assembly is used to drive the two workpiece clamping jaws to flow between the conveying device and each device.

6. The valve body assembly device for assembling an outer spring using a pin according to claim 4, characterized in that: The conveying device is a ring-shaped conveying device; The valve seat feeding device also includes: a valve seat feeding and conveying mechanism, a valve seat tray lateral displacement mechanism, a valve seat tray lifting mechanism, a valve seat silo, a valve seat empty tray silo and a valve body finished product silo; The three silos are distributed in the transverse direction, a material tray is provided in each silo, the valve seat loading and transporting mechanism and the material tray transverse displacement mechanism are provided on one side of the silo, and at least one silo is provided with a material tray lifting mechanism; The tray lateral displacement mechanism is used to enable the tray to flow between the three silos, and the tray lifting mechanism is used to adjust the height of the tray in the silo.

7. The valve body assembly device for assembling an outer spring using a pin according to claim 4, characterized in that: Also includes: press; The inner retaining spring feeding device is arranged on one side of the press; The press comprises: a valve seat positioning mechanism, a lifting positioning mechanism and a pressing mechanism, wherein the valve seat positioning mechanism is arranged below the lifting positioning mechanism, the lifting positioning mechanism is arranged below the pressing mechanism, and the lifting positioning mechanism is provided with a guide hole; The inner retaining spring feeding device is used to place the inner retaining spring in the guide hole of the lifting and positioning mechanism; The valve seat positioning mechanism is used to apply a clamping force to the valve seat, and the pressing mechanism is used to press the retaining spring in the guide hole into the valve seat.

8. The valve body assembly device for assembling an outer spring using a pin according to claim 7, characterized in that: The lifting and positioning mechanism includes: a lifting power part, a lifting plate, a positioning power part and an inner retaining spring mounting positioning part; The lifting plate is mounted on the lifting power member, the positioning power member is mounted on the lifting plate, the two inner retaining spring mounting positioning members are mounted on the positioning power member, and the lifting power member is used to drive the lifting plate to move up and down; When the lifting power component drives the inner retaining spring installation positioning component to move to a position matched with the valve core, the positioning power component drives the two inner retaining spring installation positioning components to enclose and form a guide hole above the valve seat.

9. The assembly method of the valve body assembly equipment using a pin to assemble an external spring according to any one of claims 1 to 8, characterized in that: include: Use the external spring gasket feeding device to convey the external gasket and the external spring to the pin assembly device, use the transport device to move the valve seat on the conveying device to the position of the card slot position detection device, and use the card slot position detection device to identify the direction of the valve seat where the card slot is provided; Then the transport device moves the portion of the valve seat with the slot to a position that cooperates with the pin assembly device, and the transport device allows the portion of the valve seat with the slot to pass through the outer spring and the outer gasket in sequence, and the portion of the valve seat with the slot is spaced a predetermined distance from the outer gasket; Then, the pin assembly device is used to move the pin along its radial direction to the position where the valve seat is provided with a clamping groove; Then the handling device moves the valve seat on the pin assembly device to the conveying device. At this time, the elastic force of the outer spring is used to connect the outer gasket with the pin, so that the outer gasket and the outer spring are limited between the step portion of the pin and the valve seat.

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