An automated assembly equipment for piston rods of valve assemblies

Abstract

This utility model relates to the field of piston rod assembly technology, and in particular to an automatic piston rod assembly equipment for valve assemblies. It includes a switching mechanism mounted on a frame, and a piston rod feeding mechanism, a nut loading mechanism, a nut clamping mechanism, and a piston rod unloading mechanism are arranged sequentially along the circumferential rotation direction of the switching mechanism. This solves the technical problems of traditional assembly requiring multiple manual interventions, resulting in long production cycles. For example, manual rotation and positioning of the tooling rotation mechanism is time-consuming and prone to errors.

Description

Technical Field

[0001] This utility model relates to the field of piston rod assembly technology, and in particular to an automatic piston rod assembly device for valve assemblies. Background Technology

[0002] As a core component of industrial equipment such as manual pumps and hydraulic machinery, the assembly quality of piston rods directly affects the performance and reliability of the equipment. In recent years, with the rapid development of industrial automation and intelligent manufacturing, the research and development background of piston rod assembly technology can be comprehensively analyzed from three aspects: market demand, technical pain points, and industry trends.

[0003] However, traditional assembly requires multiple manual interventions and has a long production cycle. Taking the tooling rotation mechanism as an example, manual rotation and positioning is time-consuming and prone to errors. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by setting up a switching mechanism in conjunction with a piston rod feeding mechanism, a nut mounting mechanism, a nut clamping mechanism, and a piston rod unloading mechanism to limit the nut's position on the washer assembly. The final position accuracy of each rotation is strictly guaranteed. This precision directly improves the assembly consistency of the product, thereby solving the technical problems of traditional assembly requiring multiple manual interventions and having a long production cycle. Taking the tooling rotation mechanism as an example, manual rotation positioning is time-consuming and prone to errors.

[0005] To address the above technical issues, the following technical solution is adopted: An automatic assembly device for piston rods of a valve assembly includes a switching mechanism mounted on a frame, and a piston rod feeding mechanism, a nut loading mechanism, a nut clamping mechanism, and a piston rod unloading mechanism are sequentially arranged along the circumferential rotation direction of the switching mechanism.

[0006] Preferably, the switching mechanism includes: A turntable, wherein several sets of vehicles are arranged along the circumference of the turntable; and A drive unit drives the turntable to rotate intermittently.

[0007] Preferably, the vehicle includes: First base; A first pneumatic gripper, the first pneumatic gripper being mounted on the first base; and A fixing clamp is slidably disposed on the first base and located above the first pneumatic gripper.

[0008] Preferably, the piston rod feeding mechanism includes: The second base moves vertically on the first guide rail, and the first guide rail slides horizontally on the second guide rail; A second pneumatic gripper, the second pneumatic gripper being mounted on the second base; and The top support unit is disposed on the second base and above the second pneumatic gripper, and includes a sliding sleeve, an elastic unit vertically disposed within the sliding sleeve, and a pressure cylinder disposed below the elastic unit and matched and inserted with the upper end of the piston rod.

[0009] Preferably, the nut mounting mechanism includes A nut feeding device, comprising a vibratory feeder and a lifting seat disposed at the output end of the vibratory feeder and moving up and down in the vertical direction; A conveyor, disposed on one side of the lifting seat, includes a third base, a rotating rod rotatably mounted on the third base, and two sets of third pneumatic grippers respectively disposed at both ends of the rotating rod; and A tightening element is disposed on one side of the conveyor and is used to drive the nut into the piston rod.

[0010] Preferably, the tightening element includes: A fourth pneumatic gripper, which moves horizontally on a fourth base; and A screwdriver that moves vertically on a third guide rail.

[0011] Preferably, the nut clamping mechanism includes a clamping member and a support member mounted on the workbench from top to bottom; The fastening component includes a lifting unit and a fastening unit installed at the output end of the lifting unit; The support includes a transfer member located below the clamping member and a fifth pneumatic gripper mounted on the transfer member.

[0012] Preferably, the transfer assembly includes a fifth base; The fifth pneumatic gripper is mounted on the fifth base, which moves horizontally on the first sliding rail, and the first sliding rail moves vertically on the second sliding rail.

[0013] Preferably, the piston rod feeding mechanism includes: The output component includes two sets of first conveying units and second conveying units arranged side by side. Each first and second conveying unit includes a discharge track mounted on a bracket. The discharge track includes two sets of symmetrically arranged L-shaped support frames, with a transmission channel for the piston rod formed between the two sets of support frames. A translation component is disposed below the turntable and located at the input end of the output component. The translation component includes a sixth pneumatic gripper, which slides laterally on a first sliding seat in a manner that moves along a pulley rail. The first sliding seat slides longitudinally on a second sliding seat in a manner that moves along a pulley rail.

[0014] Alternatively, a dust collection box is provided above the first or second conveying unit; The dust collector blows air into the dust collection box, and the dust is discharged through the dust collection port.

[0015] The beneficial effects of this utility model are: (1) In this utility model, the piston rod is accurately and orderly fed when the switching mechanism is set in conjunction with the piston rod feeding mechanism, and the nut is tightened when it moves to the nut mounting mechanism. At the same time, the nut clamping mechanism is used to complete the accurate clamping of the nut and the targeted output after detection is completed when it moves to the piston rod unloading mechanism. The final position accuracy of each rotation is strictly guaranteed. This accuracy directly improves the assembly consistency of the product and reduces equipment operation failures caused by assembly deviation. (2) In this utility model, by setting a nut loading part in conjunction with a conveying part, the nut is output and transferred to the top of the piston rod. Then, the tightening part is used to tighten the nut and send it into the piston rod, so as to fix and limit multiple moving gaskets under the nut, ensuring the structural stability during the power transmission process. At the same time, during the rotation assembly process, by controlling the rotation torque, microcracks or deformations caused by stress concentration in the parts can be avoided, thus extending the service life of the product.

[0016] In summary, this equipment has the advantages of simple structure and high degree of automation, and is especially suitable for the field of piston rod assembly technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an automated assembly equipment for the piston rod of a valve assembly.

[0019] Figure 2 This is a top view of an automated assembly equipment for the piston rod of a valve assembly.

[0020] Figure 3 This is a structural schematic diagram of the vehicle.

[0021] Figure 4This is a schematic diagram of the piston rod feeding mechanism.

[0022] Figure 5 This is a cross-sectional view of the top support unit.

[0023] Figure 6 Schematic diagram of the nut mounting mechanism Figure 1 .

[0024] Figure 7 Schematic diagram of the nut mounting mechanism Figure 2 .

[0025] Figure 8 Schematic diagram of the nut clamping mechanism Figure 1 .

[0026] Figure 9 Schematic diagram of the nut clamping mechanism Figure 2 .

[0027] Figure 10 Schematic diagram of the piston rod feeding mechanism Figure 1 .

[0028] Figure 11 Schematic diagram of the piston rod feeding mechanism Figure 2 . Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1 like Figure 1-2 As shown, an automatic piston rod assembly device for a valve assembly includes a switching mechanism 2 mounted on a frame 1, and a piston rod feeding mechanism 3, a nut loading mechanism 4, a nut clamping mechanism 5, and a piston rod unloading mechanism 6 are sequentially arranged along the circumferential rotation direction of the switching mechanism 2.

[0031] In this embodiment, the piston rod 100 is precisely and orderly fed when the switching mechanism 2 is set in conjunction with the piston rod feeding mechanism 3. When it moves to the nut mounting mechanism 4, the nut is mounted and tightened. At the same time, the nut clamping mechanism 5 is used to complete the precise clamping of the nut. The piston rod unloading mechanism 6 is used to complete the targeted output after testing. The final position accuracy of each rotation is strictly guaranteed. This precision directly improves the assembly consistency of the product and reduces equipment malfunctions caused by assembly deviations.

[0032] Furthermore, such as Figure 2-3 As shown, the switching mechanism 2 includes: Turntable 21, wherein a plurality of carriers 22 are arranged along the circumferential direction; and The drive unit 23 drives the turntable 21 to rotate intermittently.

[0033] It is worth noting that the drive unit 23 uses a servo motor to achieve uniform rotation of the turntable 21 through the meshing of multiple sets of gears, and its accuracy is easy to control.

[0034] Furthermore, such as Figure 3 As shown, the vehicle 22 includes: First base 221; A first pneumatic gripper 222 is mounted on the first base 221; and A fixing clamp 223 is slidably disposed on the first base 221 and located above the first pneumatic gripper 222.

[0035] In this embodiment, the carrier 22 drives the piston rod to rotate, the first pneumatic gripper 222 clamps and positions the piston rod, and drives it to rotate and switch work positions to achieve automated operation. At the same time, a fixing fixture 223 is set to clamp and position the multiple sets of gaskets and valve plates on the piston rod that are in a movable state, so as to prevent them from falling off during the transmission work position switching process and ensure accurate positioning.

[0036] Furthermore, such as Figure 4-5 As shown, the piston rod feeding mechanism 3 includes: The second base 31 moves vertically on the first guide rail 32, and the first guide rail 32 slides horizontally on the second guide rail 33. The second pneumatic gripper 34 is mounted on the second base 31; and The top support unit 35 is disposed on the second base 31 and above the second pneumatic gripper 34, and includes a sliding sleeve 351, an elastic unit 352 vertically disposed in the sliding sleeve 351, and a pressure cylinder 353 disposed below the elastic unit 352 and matched and inserted into the upper end of the piston rod 100.

[0037] In this embodiment, after the piston rod is clamped by the second pneumatic gripper 34, the top support unit 35 presses down on the movable pad to keep it in a single state, thereby transferring it to the carrier. After being clamped by the first pneumatic gripper 222, the fixing clamp 223 quickly clamps and positions it to prevent the pad assembly on the piston rod from falling off.

[0038] Furthermore, such as Figure 6-7 As shown, the nut mounting mechanism 4 includes Nut feeding component 41, the nut feeding component 41 includes a vibratory plate 411 and a lifting seat 412 disposed at the output end of the vibratory plate 411 and moving up and down in the vertical direction; Conveying component 413, disposed on one side of the lifting seat 412, includes a third base 4131, a rotating rod 4132 rotatably mounted on the third base 4131, and two sets of third pneumatic grippers 4133 respectively disposed at both ends of the rotating rod 4132; and A tightening member 414 is disposed on one side of the conveyor 413 and is used to drive the nut 200 into the piston rod 100.

[0039] In this embodiment, by setting the nut loading component 41 in conjunction with the conveying component 413, the nut is output and transferred to the top of the piston rod. Then, the tightening component 414 is used to tighten the nut and send it into the piston rod, so as to fix and limit the multiple movable gaskets under the nut, ensuring the structural stability during the power transmission process. At the same time, during the rotation assembly process, by controlling the rotation torque, microcracks or deformations caused by stress concentration in the components can be avoided, thus extending the service life of the product.

[0040] Furthermore, such as Figure 7 As shown, the tightening member 414 includes: A fourth pneumatic gripper 4141, which moves horizontally on a fourth base 4142; and Screw gun 4143, which moves vertically on the third guide rail 4144.

[0041] It should be noted that the screw gun 4143 will have a nut-finding process, the screw head is fixed, and the rotation will drive the nut downward to tighten it with the piston rod 100.

[0042] Furthermore, the fourth pneumatic gripper 4141 is a force-multiplying gripper with anti-torsion function. Its purpose is to prevent the piston rod 100 from rotating when the screw gun 4143 tightens the nut by gripping the piston rod 100 with the fourth pneumatic gripper 4141.

[0043] When the fourth pneumatic gripper 4141 grips the piston rod 100, the grippers of the first pneumatic gripper 222 and the third pneumatic gripper 4133 open during the tightening section.

[0044] Furthermore, such as Figure 8-9 As shown, the nut clamping mechanism 5 includes a clamping member 51 and a support member 52 mounted from top to bottom on the workbench 50; The fastening member 51 includes a lifting unit 511 and a fastening unit 512 installed at the output end of the lifting unit 511; The support member 52 includes a transfer member 521 located below the clamping member 51 and a fifth pneumatic gripper 522 mounted on the transfer member 521.

[0045] It should be noted that the fifth pneumatic gripper 522 is a force-multiplying gripper with anti-torsion function.

[0046] Furthermore, such as Figure 9 As shown, the transfer member 521 includes a fifth base 5211; The fifth pneumatic gripper 522 is mounted on the fifth base 5211. The fifth base 5211 moves horizontally on the first sliding rail 5212, and the first sliding rail 5212 moves vertically on the second sliding rail 5213.

[0047] In this application, by setting a clamping component 51 in conjunction with a support component 52, the piston rod is clamped and moved to a precise clamping position. Then, the clamping component 51 is used to stably clamp it, so that the piston rod can be freely installed from any position and transferred to the clamping position. The final position of the piston rod can be precisely controlled, thereby performing an accurate clamping action. Moreover, the position and height of piston rods of various specifications and lengths can be adjusted, and the assembly quality is stable.

[0048] It should be noted that the nut crimping machine of the crimping unit 512 is existing technology, and its specific structure will not be described in detail here.

[0049] By setting the transfer component 521, the piston rod can be moved horizontally to remove it from the carrier 22, and then vertically lifted to mount the piston rod 100 to the position to be clamped, so as to achieve a precise clamping action.

[0050] Example 2 Components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: Furthermore, such as Figure 10-11 As shown, the piston rod feeding mechanism 6 includes: Output component 61, comprising two sets of first conveying units 611 and second conveying units 612 arranged side by side. Each of the first and second conveying units 611 and 612 includes a discharge track 6112 mounted on a bracket 6111. The discharge track 6112 includes two sets of symmetrically arranged L-shaped support frames, with a transmission channel 6114 for the piston rod formed between the two sets of support frames. Translation component 62 is disposed below the turntable 21 and located at the input end of the output component 61. The translation component 62 includes a sixth pneumatic gripper 621, which slides laterally on a first sliding seat 622 in a manner that moves along a pulley rail. The first sliding seat 622 slides longitudinally on a second sliding seat 623 in a manner that moves along a pulley rail.

[0051] In this embodiment, by setting the output component 61 in conjunction with the translation component 62, the qualified or unqualified products on the assembly line are classified and output. Its high-precision positioning and detection system can ensure the accurate position of the piston rod during the assembly process.

[0052] In detail, after the sixth pneumatic gripper 621 grips the piston rod on the first pneumatic gripper 222, the first pneumatic gripper 222 is released, and the sixth pneumatic gripper 621 outputs the piston rod to the first conveying unit 611 or the second conveying unit 612 according to the instruction issued by the CCD inspection camera 5 after detection.

[0053] Furthermore, such as Figure 10 As shown, a dust collection box 63 is provided above the first conveying unit 611 or the second conveying unit 612; The dust collector blows air into the dust collection box 63, and the dust is discharged through the dust collection port.

[0054] The discharge track 6112 consists of a smoothly transitioning inclined section and a horizontal section. The purpose of setting the input end of the discharge track 6112 as an inclined section is to make the input piston rod initially inclined, so as to cooperate with the airflow in the dust collector 63 to quickly blow away the dust.

[0055] Work process Step 1: The second pneumatic gripper 34 clamps the piston rod from the previous station, while the top support unit 35 presses down to fix multiple sets of pads. Then the piston rod is stably sent to the first pneumatic gripper 222 of the carrier, and the fixing fixture 223 quickly clamps and fixes the multiple sets of moving pads. Step 2: The carrier 22 moves the piston rod to the nut mounting mechanism 4, and the nuts on the vibratory plate 411 are output one by one. The lifting seat 412 lifts the nuts at the output end of the vibratory plate 411 to the third pneumatic gripper 4133. The third pneumatic gripper 4133 clamps the nuts. The rotating rod 4132 rotates to move the nuts above the piston rod 100. Then the fourth pneumatic gripper 4141 moves to the piston rod and clamps its rod body. The screw gun 4143 rotates the nuts to tighten them downwards and fixes the multiple sets of movable washers on them. Step 3: The carrier 22 moves the piston rod to the nut clamping mechanism 5. The fifth pneumatic gripper 522 clamps the piston rod 100 and raises it to the working height. The clamping part 51 clamps the nut and then sends the piston rod 100 back to the carrier 22. Step 4: The carrier 22 moves the piston rod to the piston rod unloading mechanism 6. The CCD detection camera checks the nut clamping position. If it is NG, the sixth pneumatic gripper 621 clamps the piston rod and outputs it to the first conveying unit for direct unloading. If it is OK, it moves to the dust removal position of the second conveying unit, cleans it, and then unloads it.

[0056] In the description of this utility model, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0057] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0058] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An automatic assembly device for piston rods of a valve assembly, characterized in that, It includes a switching mechanism mounted on a frame, and along the circumferential rotation direction of the switching mechanism, a piston rod feeding mechanism, a nut loading mechanism, a nut clamping mechanism, and a piston rod unloading mechanism are arranged in sequence.

2. The automatic assembly equipment for piston rods of a valve assembly according to claim 1, characterized in that, The switching mechanism includes: A turntable, wherein several sets of vehicles are arranged along the circumference of the turntable; and A drive unit drives the turntable to rotate intermittently.

3. The automatic assembly equipment for the piston rod of a valve assembly according to claim 2, characterized in that, The vehicle includes: First base; A first pneumatic gripper, the first pneumatic gripper being mounted on the first base; and A fixing clamp is slidably disposed on the first base and located above the first pneumatic gripper.

4. The automatic assembly equipment for the piston rod of a valve assembly according to claim 3, characterized in that, The piston rod feeding mechanism includes: The second base moves vertically on the first guide rail, and the first guide rail slides horizontally on the second guide rail; A second pneumatic gripper, the second pneumatic gripper being mounted on the second base; and The top support unit is disposed on the second base and above the second pneumatic gripper, and includes a sliding sleeve, an elastic unit vertically disposed within the sliding sleeve, and a pressure cylinder disposed below the elastic unit and matched and inserted with the upper end of the piston rod.

5. The automatic assembly equipment for the piston rod of a valve assembly according to claim 3, characterized in that, The nut mounting mechanism includes A nut feeding device, comprising a vibratory feeder and a lifting seat disposed at the output end of the vibratory feeder and moving up and down in the vertical direction; The conveyor is disposed on one side of the lifting seat and includes a third base, a rotating rod rotatably disposed on the third base, and two sets of third pneumatic grippers respectively disposed at both ends of the rotating rod. as well as A tightening element is disposed on one side of the conveyor and is used to drive the nut into the piston rod.

6. The automatic assembly equipment for the piston rod of a valve assembly according to claim 5, characterized in that, The tightening component includes: A fourth pneumatic gripper, which moves horizontally on a fourth base; and A screwdriver that moves vertically on a third guide rail.

7. The automatic assembly equipment for piston rods of a valve assembly according to claim 1, characterized in that, The nut clamping mechanism includes clamping components and supporting components mounted on the workbench from top to bottom; The fastening component includes a lifting unit and a fastening unit installed at the output end of the lifting unit; The support includes a transfer member located below the clamping member and a fifth pneumatic gripper mounted on the transfer member.

8. The automatic assembly equipment for piston rods of a valve assembly according to claim 7, characterized in that, The transfer component includes a second base; The fifth pneumatic gripper is mounted on the second base, the second base moves horizontally on the first sliding rail, and the first sliding rail moves vertically on the second sliding rail.

9. The automatic assembly equipment for piston rods of a valve assembly according to claim 2, characterized in that, The piston rod feeding mechanism includes: The output component includes two sets of first conveying units and second conveying units arranged side by side. Each first and second conveying unit includes a discharge track mounted on a bracket. The discharge track includes two sets of symmetrically arranged L-shaped support frames, with a transmission channel for the piston rod formed between the two sets of support frames. A transfer component is disposed below the turntable and at the input end of the output component. The transfer component includes a sixth pneumatic gripper, which slides laterally on a first sliding seat in a manner that moves along a pulley rail. The first sliding seat slides longitudinally on a second sliding seat in a manner that moves along a pulley rail.

10. An automatic piston rod assembly device for a valve assembly according to claim 9, characterized in that, A dust collection box is provided above the first or second conveying unit; The dust collector blows air into the dust collection box, and the dust is discharged through the dust collection port.

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