A diaphragm assembly locking mechanism for a diaphragm pump

Abstract

A diaphragm assembly locking mechanism for a diaphragm pump, comprising a rotating receiving device, a locking mechanism. The rotating receiving device comprises a fixed plate, a rotating assembly, a suction cup assembly, a driving device. The rotating assembly comprises a vertical plate, a main body plate, a sleeve adjusting plate, a sleeve assembly, a guide column, a micro electric cylinder. The sleeve assembly comprises a sleeve floating seat, a connecting rod, a nut sleeve. The suction cup assembly comprises an air chamber clamp plate, a diaphragm fixing tool, a suction cup joint, an air nozzle joint. The locking mechanism comprises a second sliding rail, a second sliding block, a second movable plate, a tightening gun fixing plate, a tightening gun, a second push cylinder. After the diaphragm is sucked by the suction cup assembly, the rotating assembly aligns the diaphragm pump, the pressing mechanism pushes the diaphragm to the installation point, and the locking mechanism tightens the bolt, completing the tightening work. The whole process is automated, reducing labor costs caused by manual work, effectively improving assembly efficiency and assembly quality.

Description

Technical Field

[0001] This invention relates to the field of pump assembly technology, and in particular to a diaphragm assembly locking mechanism for diaphragm pumps. Background Technology

[0002] Diaphragm pumps, also known as control pumps, are a major type of actuator. They change the fluid flow rate by receiving control signals from the regulating control unit and using power. They are a new type of conveying machinery that can transport various corrosive liquids, liquids containing particles, and high-viscosity, volatile, flammable, and highly toxic liquids.

[0003] For example, a high-performance pneumatic diaphragm pump as described in Chinese utility model CN201921098367.6 includes a diaphragm plate fixedly connected in the pump body, which divides the pump body into an air chamber and a pump chamber. The diaphragms on both sides are connected by a connecting rod assembly, and a gasket is provided between the diaphragm plate and the connecting rod assembly. Gaskets are provided on both sides of the diaphragm plate, and the edges of the gaskets are inclined towards one side of the diaphragm plate. The connecting rod assembly can move laterally to change the volume of the air chamber and the pump chamber on the same side. The upper part of the pump body on both sides is connected by a discharge pipe, and the lower part of the pump body on both sides is connected by a feed pipe. The connection between the pump body and the feed and discharge pipes is provided with a sealing cavity for placing a sealing ball. The diameter of both ends of the sealing cavity is slightly smaller than the diameter of the sealing ball, and the two ends of the sealing cavity correspond to and match the sealing ball.

[0004] During the production and assembly processes, the diaphragm needs to be bolted to the pump body. Conventional manual methods, such as using pneumatic wrenches for tightening, have the following drawbacks: ① Manual handling and repeated flipping of the product are labor-intensive and inefficient, failing to meet the demands of streamlined assembly; ② The tightening degree cannot be standardized, requiring highly skilled workers. Therefore, transforming the diaphragm assembly and tightening of diaphragms into a mechanized, streamlined process is crucial for improving the production and assembly efficiency of diaphragm pumps. Summary of the Invention

[0005] In view of this, the present invention provides a diaphragm assembly locking mechanism for a diaphragm pump that can solve the above-mentioned problems.

[0006] A diaphragm assembly locking mechanism for a diaphragm pump includes a rotary receiving device and a locking mechanism. The rotary receiving device includes two fixed plates, a rotating assembly mounted on the fixed plates, a suction cup assembly mounted on the rotating assembly, and a driving device for driving the rotating assembly. The rotating assembly includes two spaced-apart upright plates, a main plate connecting the two upright plates, a sleeve adjusting plate disposed within the main plate, a sleeve assembly disposed at the center of the sleeve adjusting plate, a linear guide post, and a miniature electric cylinder. One end of the sleeve adjusting plate is sleeved on the linear guide post, and the other end is connected to the miniature electric cylinder. The sleeve assembly includes a sleeve floating seat fixed on the sleeve adjusting plate, a connecting rod inserted into the sleeve floating seat, and a nut sleeve disposed on the connecting rod. The sleeve floating seat and the connecting rod are connected by a ball bearing. One end of the connecting rod is actively connected to the locking mechanism, and the other end passes through the sleeve adjusting plate and is fitted with the nut sleeve. The suction cup assembly includes an air chamber clamp plate disposed on the main body plate, a diaphragm fixing fixture disposed on the air chamber clamp plate, multiple suction cup connectors disposed within the diaphragm fixing fixture, and multiple air nozzle connectors disposed on the main body plate. The suction cup connectors are disposed within the diaphragm fixing fixture. The air nozzle connectors are disposed on the side of the main body plate opposite to the air chamber clamp plate. The locking mechanism includes two spaced-apart second slide rails, multiple second sliders disposed on the second slide rails, a second movable plate disposed on the second sliders, a tightening gun fixing plate disposed on the second movable plate, a tightening gun disposed on the tightening gun fixing plate, and a second push cylinder connected to the second movable plate.

[0007] Furthermore, the diaphragm assembly and locking mechanism for the diaphragm pump also includes a flow fixture, two worktables respectively disposed on both sides of the flow fixture, and a pressing mechanism disposed on the worktables.

[0008] Furthermore, the mobile tooling includes a base plate, a pair of V-shaped plates disposed on the base plate, two support plates disposed between the two V-shaped plates, a blocking block disposed on the support plate, and a pair of positioning pins respectively disposed on the V-shaped plates.

[0009] Furthermore, the base plate is a rectangular plate, the V-shaped plates are perpendicular to the base plate and spaced apart from each other, the support plate is perpendicular to the V-shaped plates, the blocking block is a cylindrical structure disposed on the support plate, and the positioning pin is disposed at the lowest point of the V-shaped opening of the V-shaped plate.

[0010] Furthermore, the workbench is made of an alloy and includes a tabletop and four support columns supporting the tabletop.

[0011] Furthermore, the tabletop is a horizontally positioned rectangular plate with a movable groove in the center. One end of the support column is fixedly connected to the four corners of the tabletop, and the other end is fixed to the ground.

[0012] Furthermore, the clamping mechanism includes two spaced first slide rails, a plurality of first sliders disposed on the first slide rails, a first movable plate disposed on the first sliders, and a first push cylinder.

[0013] Furthermore, the first slide rail is located on the other side of the worktable away from the support column, and its laying direction is perpendicular to the movement direction of the moving tool. The first movable plate is a rectangular plate laid on the first slider, and the first push cylinder is fixed to the bottom of the worktable near the support column.

[0014] Compared with existing technologies, the diaphragm assembly and locking mechanism for diaphragm pumps provided by this invention uses a suction cup assembly to pick up the diaphragm, a rotating assembly to align it with the diaphragm pump to be installed, transported by the flow tooling, and a pressing mechanism to push the diaphragm to the installation point. The locking mechanism then tightens the bolts, completing the tightening process of installing the diaphragm onto the valve chamber. The entire process is automated, reducing labor costs associated with manual tightening using pneumatic wrenches and effectively improving assembly efficiency and quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the product structure of a diaphragm assembly and locking mechanism for a diaphragm pump provided by the present invention.

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of a diaphragm pump, which is used for a diaphragm assembly and locking mechanism.

[0017] Figure 3 for Figure 1 A schematic diagram of the flow tooling used for a diaphragm assembly and locking mechanism in a diaphragm pump.

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of a rotary receiving device for a diaphragm assembly and locking mechanism used in a diaphragm pump.

[0019] Figure 5 for Figure 1 A schematic diagram of the sleeve assembly and suction cup assembly of a diaphragm assembly locking mechanism for a diaphragm pump. Detailed Implementation

[0020] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0021] like Figures 1 to 5 The diagram shown is a structural schematic of a diaphragm assembly and locking mechanism for a diaphragm pump provided by the present invention. The diaphragm assembly and locking mechanism for the diaphragm pump includes a flow fixture 10, two worktables 20 respectively disposed on both sides of the flow fixture 10, a pressing mechanism 30 disposed on the worktable 20, a rotary receiving device 40 disposed on the pressing mechanism 30, and a locking mechanism 50 disposed on the pressing mechanism 30. It is conceivable that the diaphragm assembly and locking mechanism for the diaphragm pump also includes other functional modules such as fasteners, electrical control units, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0022] The diaphragm pump to be assembled by the diaphragm assembly locking mechanism for the diaphragm pump is as follows: Figure 2 It includes a pump body 001 and two valve chambers 002 located on both sides of the pump body 001. The diaphragm 003 is fixed to the movable rod 005 by a bolt 004, thereby realizing the assembly of the diaphragm pump.

[0023] The mobile fixture 10 includes a base plate 11, a pair of V-shaped plates 12 disposed on the base plate 11, two support plates 13 disposed between the two V-shaped plates 12, a blocking block 14 disposed on the support plate 13, and a pair of positioning pins 15 respectively disposed on the V-shaped plates 12. The base plate 11 is a rectangular plate that moves via a conveyor belt, slide rail, or other transmission device to achieve rapid material change in a continuous flow operation. The V-shaped plates 12 are perpendicular to the base plate 11 and spaced apart from each other. The support plates 13 are perpendicular to the V-shaped plates 12 and are used to place the pump body 001. The blocking block 14 is a cylindrical structure disposed on the support plate 13 to block the air outlet 004. The positioning pins 15 are disposed at the lowest point of the V-shaped opening of the V-shaped plate 12 to abut against and fix the pump body 001 placed on it.

[0024] The workbench 20 is made of stainless steel or alloy and includes a tabletop 21 and four support columns 22 supporting the tabletop 21. The tabletop 21 is a horizontally arranged rectangular plate with a movable groove in the center to provide movement space for the clamping mechanism 30. One end of each support column 22 is fixedly connected to one of the four corners of the tabletop 21, and the other end is fixed to the ground or a corresponding fixed point to form a reliable support structure. The workbench 20 serves a load-bearing function, therefore it is equipped with various functional structures, such as screws, bolts, clamps, etc., to complete the installation and assembly of the above-mentioned functional modules. These can be configured according to actual needs, and will not be described in detail here.

[0025] The clamping mechanism 30 includes two first slide rails 31 spaced apart on the worktable 20, multiple first sliders 32 disposed on the first slide rails 31, a first movable plate 33 disposed on the first sliders 32, and a first pusher cylinder 34 fixed on the worktable 20. The first slide rails 31 are located on the side of the worktable 20 away from the support column 22, and extend in a direction perpendicular to the movement direction of the flowing tooling 10, so that the first movable plate 33 slides along the first slide rails 31 towards or away from the flowing tooling 10. The first slide rails 31 and the first sliders 32 are existing technologies and should be well known to those skilled in the art; therefore, their structure and function will not be specifically described here. The first movable plate 33 is a rectangular plate laid on the first sliders 32 to fix the rotating receiving device 40 and the locking mechanism 50. The first pusher cylinder 34 is fixed to the bottom of the worktable 20 near the support column 22 to drive the first movable plate 33 to move. The movable push cylinder 34 is connected to the first movable plate 33 via a drive connecting plate to provide a transmission function, thereby pushing the first movable plate 33 closer to or away from the flow tooling 10.

[0026] The rotating receiving device 40 includes two fixed plates 41 disposed on the first movable plate 33, a rotating assembly 42 disposed on the fixed plate 41, a suction cup assembly 43 disposed on the rotating assembly 42, and a driving device 44 for driving the rotating assembly 42. The fixed plate 41 includes a rotating cylinder mounting plate 411 disposed on the first movable plate 33, and a side mounting plate 412 spaced apart from the rotating cylinder mounting plate 411. The rotating cylinder mounting plate 411 is perpendicular to the first movable plate 33 to fix the driving device 44 and serve as the rotation center fixing point of the rotating assembly 42. The side mounting plate 412 is fixedly disposed on the first movable plate 33 at a distance from the rotating cylinder mounting plate 411, and is axially symmetrical with respect to the locking mechanism 50 and the rotating cylinder mounting plate 411, to fix the rotating assembly 42 and allow the rotating assembly 42 to rotate under the action of the driving device 44.

[0027] The rotating assembly 42 includes two spaced-apart uprights 421, a main body plate 422 connecting the two uprights 421, a sleeve adjustment plate 423 disposed within the main body plate 422, a sleeve assembly 424 disposed in the center of the sleeve adjustment plate 423, a linear guide post 425 disposed at one end of the sleeve adjustment plate 423, and a miniature electric cylinder 426 disposed on the main body plate 422. The two uprights 421 are movably disposed on the rotary cylinder mounting plate 411 and the side mounting plate 412, respectively, and connected by means such as ball bearings (no specific requirements are specified here), so that the rotating assembly 42 can rotate under the drive of the driving device 44. The main body plate 422 is perpendicular to and connects the two uprights 421, serving as the main body for mounting the suction cup assembly 43 and other components of the rotating assembly 42. The sleeve adjusting plate 423 is a rectangular plate disposed between the two upright plates 421. One end is sleeved on the linear guide post 425, and the other end is connected to the miniature electric cylinder 426. Driven by the miniature electric cylinder 426, the sleeve adjusting plate 423 moves along the linear guide post 425, thereby driving the movement of the sleeve assembly 424. The sleeve assembly 424 includes a sleeve floating seat 4241 fixed on the sleeve adjusting plate 423, a connecting rod 4242 inserted into the sleeve floating seat 4241, and a nut sleeve 4243 disposed on the connecting rod 4242. The sleeve floating seat 4241 and the connecting rod 4242 are connected by a ball bearing, allowing the connecting rod 4242 to rotate and tighten under the action of the locking mechanism 50 while passing through the sleeve adjusting plate 423. One end of the connecting rod 4242 is connected to the locking mechanism 50 via a flexible connection for transmission, such as by providing a rectangular insertion hole and insertion end, so that the bolt can be tightened by rotation. The other end passes through the sleeve adjusting plate 423 and is fitted with the nut sleeve 4243. Correspondingly, the sleeve adjusting plate 423 has an opening in the center for the connecting rod 4242 to pass through. The nut sleeve 4243 has multiple replaceable parts of different sizes to accommodate nuts of different sizes.

[0028] The suction cup assembly 43 includes an air chamber clamp 431 disposed on the main body plate 422, a diaphragm fixing fixture 432 disposed on the air chamber clamp 431, a plurality of suction cup connectors 433 disposed within the diaphragm fixing fixture 432, and a plurality of air nozzle connectors 434 disposed on the main body plate 422. Both the air chamber clamp 431 and the diaphragm fixing fixture 432 are circular plate structures with a diameter matching the diameter of the diaphragm to be suctioned. Each has a central opening that coincides with the opening diameter at the center of the main body plate 422, allowing the connecting rod 4242 to pass through. The suction cup connectors 433 are disposed within the diaphragm fixing fixture 432 and distributed on its surface to suction the diaphragm to be installed. The air nozzle connector 434 is located on the side of the main body plate 422 away from the air chamber clamping plate 431, to connect an air pump for air intake control. Correspondingly, the air nozzle connector 434 and the suction cup connector 433 are connected by an air pipe, and air channels are provided between the main body plate 422, the air chamber clamping plate 431, and the diaphragm fixing fixture 432, which will not be described in detail here. At the same time, in order to achieve a better suction effect, the shape of the contact surface between the diaphragm fixing fixture 432 and the diaphragm can be a shape that matches the diaphragm, and there is no limitation here.

[0029] The drive device 44 is a device that drives the rotating component 42 to rotate. It can be a cylinder, a motor or other drive device, and no further specific restrictions will be imposed.

[0030] The locking mechanism 50 includes two second slide rails 51 spaced apart on the first movable plate 33, multiple second sliders 52 on the second slide rails 51, a second movable plate 53 on the second sliders 52, a tightening gun fixing plate 54 on the second movable plate 53, a tightening gun 55 on the tightening gun fixing plate 54, and a second push cylinder 56 for driving the second movable plate 53. The second slide rails 51 are located on the side of the first movable plate 33 away from the first slide rails 31, and their laying direction is consistent with that of the first slide rails 31. The second slide rails 51 and second sliders 52 have the same structure and function as the first slide rails 31 and first sliders 32, and therefore will not be described in detail here. The second movable plate 53 is a rectangular plate laid on the second sliders 52 to fix the tightening gun fixing plate 54 and the tightening gun 55. The tightening gun fixing plate 54 is vertically fixed to the second movable plate 53 to fix the tightening gun 55. The tightening gun 55 is existing technology, as described in the description of the bolt tightening gun in Chinese Utility Model CN201220216284.4, and therefore will not be repeated here. The second push cylinder 56 is fixed on the first movable plate 33 and connected to the second movable plate 53 to serve as a driving mechanism for the second movable plate 53, pushing the second movable plate 53 to move on the second slide rail 51.

[0031] Compared with the prior art, the diaphragm assembly and locking mechanism for diaphragm pumps provided by the present invention, after the suction cup assembly 43 picks up the diaphragm 007, the rotating assembly 42 aligns it with the diaphragm pump to be installed, which is transported by the flow tooling 10. Under the push of the pressing mechanism 30, the diaphragm 007 is pushed to the installation point, and the locking mechanism 50 tightens the bolts, completing the tightening work of installing the diaphragm 007 onto the valve cavity 002. The entire process is automated, reducing the labor costs caused by manual tightening with an air wrench, and effectively improving assembly efficiency and quality.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered within the scope of the claims of the present invention.

Claims

1. A diaphragm assembly locking mechanism for a diaphragm pump, characterized in that: The diaphragm assembly locking mechanism for the diaphragm pump includes a rotating receiving device and a locking mechanism. The rotating receiving device includes two fixed plates, a rotating assembly mounted on the fixed plates, a suction cup assembly mounted on the rotating assembly, and a driving device for driving the rotating assembly. The rotating assembly includes two spaced-apart upright plates, a main body plate connecting the two upright plates, a sleeve adjusting plate mounted within the main body plate, a sleeve assembly positioned at the center of the sleeve adjusting plate, a linear guide post, and a miniature electric cylinder. One end of the sleeve adjusting plate is fitted onto the linear guide post, and the other end is connected to the miniature electric cylinder. The sleeve assembly includes a sleeve floating seat fixed to the sleeve adjusting plate, a connecting rod inserted into the sleeve floating seat, and a nut sleeve mounted on the connecting rod. The sleeve floating seat is connected to the connecting rod... The rods are connected by a ball bearing. One end of the connecting rod is connected to the locking mechanism via an active connection, and the other end passes through the sleeve adjustment plate and is fitted with the nut sleeve. The suction cup assembly includes an air chamber clamp plate disposed on the main body plate, a diaphragm fixing fixture disposed on the air chamber clamp plate, multiple suction cup connectors disposed within the diaphragm fixing fixture, and multiple air nozzle connectors disposed on the main body plate. The suction cup connectors are disposed within the diaphragm fixing fixture, and the air nozzle connectors are disposed on the side of the main body plate away from the air chamber clamp plate. The locking mechanism includes two spaced second slide rails, multiple second sliders disposed on the second slide rails, a second movable plate disposed on the second sliders, a tightening gun fixing plate disposed on the second movable plate, a tightening gun disposed on the tightening gun fixing plate, and a second push cylinder connected to the second movable plate.

2. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 1, characterized in that: The diaphragm assembly and locking mechanism for the diaphragm pump also includes a flow fixture, two worktables respectively disposed on both sides of the flow fixture, and a pressing mechanism disposed on the worktables.

3. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 2, characterized in that: The mobile tooling includes a base plate, a pair of V-shaped plates disposed on the base plate, two support plates disposed between the two V-shaped plates, a blocking block disposed on the support plate, and a pair of positioning pins respectively disposed on the V-shaped plates.

4. The diaphragm assembly and locking mechanism for a diaphragm pump as described in claim 3, characterized in that: The base plate is a rectangular plate, the V-shaped plates are perpendicular to the base plate and spaced apart from each other, the support plate is perpendicular to the V-shaped plates, the blocking block is a cylindrical structure disposed on the support plate, and the positioning pin is disposed at the lowest point of the V-shaped opening of the V-shaped plate.

5. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 2, characterized in that: The workbench is made of alloy and includes a tabletop and four support columns supporting the tabletop.

6. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 5, characterized in that: The platform is a horizontally positioned rectangular plate with a movable groove in the center. One end of the support column is fixedly connected to the four corners of the platform, and the other end is fixed to the ground.

7. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 5, characterized in that: The clamping mechanism includes two spaced first slide rails, multiple first sliders disposed on the first slide rails, a first movable plate disposed on the first sliders, and a first push cylinder.

8. The diaphragm assembly locking mechanism for a diaphragm pump as described in claim 7, characterized in that: The first slide rail is located on the side of the worktable away from the support column, and its laying direction is perpendicular to the movement direction of the moving tool. The first movable plate is a rectangular plate laid on the first slide rail. The first push cylinder is fixed to the bottom of the worktable near the support column.

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