A positioning mechanism for the movable rod of a diaphragm pump

Abstract

A positioning mechanism for the movable rod of a diaphragm pump, which comprises a clamping mechanism and a positioning mechanism. The positioning mechanism includes a lifting assembly, a sliding assembly, and a connecting rod assembly. The lifting assembly includes a guiding column, a V-shaped cushion block, and a linear bearing. The sliding assembly includes a slide rail, a slider, a slide plate, and a vertical plate. The connecting rod assembly includes a first connecting rod, a second connecting rod, a support member, a first rotating shaft, a second rotating shaft, a third rotating shaft, and a fourth rotating shaft. Compared with the prior art, by setting the positioning mechanism, after the product flows to the working station, under the control of the electrical equipment, the driving mechanism drives the sliding assembly to move, and connects the lifting assembly to control the height of the product. After reaching the working height, the pneumatic gripper clamps the movable rod to be installed and, under the drive of the electric cylinder, approaches the installation point of the product and abuts against the specified position. The whole process adopts electrical control to ensure accurate positioning of the installation, reduce the installation error, and ensure the working efficiency of the assembly.

Description

Technical Field

[0001] The invention relates to the technical field of pump assembly, and in particular to a diaphragm pump movable rod positioning mechanism. Background Art

[0002] The diaphragm pump, also known as the control pump, is the main type of actuator. It receives the control signal output by the regulating control unit and uses power operation to change the fluid flow. It is a new type of conveying machinery that can convey various corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids.

[0003] Its structural feature is that a diaphragm is installed in each of the two symmetrical working chambers of the pump, and they are connected as a whole by a central connecting rod. The central connecting rod is a movable rod that pushes the diaphragm through reciprocating motion, so that the two diaphragms reciprocate continuously and synchronously.

[0004] Therefore, in order to ensure the working accuracy and working life of the movable rod, the installation accuracy needs to be guaranteed; at the same time, in order to meet the assembly efficiency of automated assembly, the installation movable rod needs to be quickly positioned. Summary of the invention

[0005] In view of this, the present invention provides a diaphragm pump movable rod positioning mechanism that can solve the above-mentioned problem.

[0006] A positioning mechanism for the movable rod of a diaphragm pump, which includes two clamping mechanisms and a positioning mechanism disposed between the clamping mechanisms. The positioning mechanism includes a lifting assembly, a sliding assembly, and a connecting rod assembly connecting the lifting assembly and the sliding assembly. The lifting assembly includes four guide posts, a V-shaped cushion block disposed on the guide posts, and four linear bearings respectively disposed between the guide posts and the V-shaped cushion block. The sliding assembly includes a slide rail, a slider disposed on the slide rail, a slide plate disposed on the slider, and a vertical plate disposed on the slide plate. The slide rail is a linear slide rail. The slide plate is a rectangular square plate fixed to the slider. The vertical plate is vertically fixed to the slide plate and is located on the side of the slide plate close to the lifting assembly. The connecting rod assembly includes an L-shaped first connecting rod, a straight-shaped second connecting rod, a fixed support, a first rotating shaft disposed in the V-shaped cushion block, a second rotating shaft fixed to the support, a third rotating shaft located at the connection of the first connecting rod and the second connecting rod, and a fourth rotating shaft disposed on the vertical plate. The first connecting rod is an L-shaped structure, and an activity slot for inserting the first rotating shaft and sliding along the long side is provided at the end of the long side. The end of the short side is connected to one end of the second connecting rod through the third rotating shaft, and the connection point of the long side and the short side is connected to the second rotating shaft. The other end of the second connecting rod is connected to the vertical plate through the fourth rotating shaft.

[0007] Further, the positioning mechanism for the movable rod of the diaphragm pump further includes a frame, and the frame includes a pair of brackets supporting the clamping mechanisms and a bottom plate for placing the positioning mechanism.

[0008] Further, the bottom plate is a rectangular plate, and a pair of side stop blocks and a side support block are provided thereon.

[0009] Further, the clamping mechanism includes an electric cylinder disposed on the bracket and a pneumatic gripper fixed to the electric cylinder.

[0010] Further, the four guide posts are respectively located at the four corners of the V-shaped cushion block.

[0011] Further, the sliding assembly is driven by a driving mechanism.

[0012] Further, the positioning mechanism further includes a fixing assembly disposed on the sliding assembly. The fixing assembly includes a cushion block disposed on the side support block, a base bracket disposed on the vertical plate, and an adjustment block disposed on the base bracket. The cushion block is disposed on the side of the side support block facing the lifting assembly.

[0013] Further, the base bracket and the adjustment block are located at the top of the vertical plate, and the position of the adjustment block is adjusted by a bolt structure.

[0014] Compared with the prior art, the diaphragm pump moving rod positioning mechanism provided by the present invention enables, by setting the positioning mechanism, after the product flows to the working station, under the control of the electrical equipment, the driving mechanism drives the sliding assembly to move, and connects the lifting assembly to control the height of the product. After reaching the working height, the pneumatic gripper clamps the moving rod to be installed and, under the drive of the electric cylinder, approaches the installation point of the product and abuts against the designated position. The whole process adopts electric control to ensure accurate positioning of the installation, reduce the installation error, achieve full automation, and ensure the working efficiency of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a product of a diaphragm pump moving rod positioning mechanism provided by the present invention.

[0016] Figure 2 For Figure 1 FIG. is a schematic structural diagram of the positioning mechanism of a diaphragm pump moving rod positioning mechanism with the pump body removed.

[0017] Figure 3 For Figure 1 FIG. is a connection schematic diagram of a connecting rod assembly of a diaphragm pump moving rod positioning mechanism for clamping a workpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further details the 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 protection scope of the present invention.

[0019] As Figures 1 to 3 shown, FIG. is a schematic structural diagram of a diaphragm pump moving rod positioning mechanism provided by the present invention. The diaphragm pump moving rod positioning mechanism includes a frame 10, two clamping mechanisms 20 arranged on the frame 10, and a positioning mechanism 30 arranged between the clamping mechanisms 20. It can be envisioned that the diaphragm pump moving rod positioning mechanism further includes other functional modules such as fasteners, electrical control units, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein one by one.

[0020] The frame 10 includes a pair of brackets 11 for supporting the clamping mechanisms and a bottom plate 12 for placing the positioning mechanism 30. The brackets 11 are made of metal materials such as stainless steel or alloy and are fixed on the ground or the workbench surface. The bottom plate 12 is a rectangular plate, on which a pair of side stop blocks 13 and a side support block 14 are provided to form an area for placing the diaphragm pump.

[0021] The clamping mechanism 20 is respectively arranged on both sides of the positioning mechanism 30, and includes an electric cylinder 21 arranged on the bracket 11 and a pneumatic gripper 22 fixed on the electric cylinder 21. Both the electric cylinder 21 and the pneumatic gripper 22 are prior arts and are well-known to those skilled in the art, so their specific structures will not be described in detail herein. The electric cylinder 21 is installed on the bracket 11 to drive the pneumatic gripper 22 to move, so as to realize the positioning of the clamping mechanism 20. The pneumatic grippers 22 on the two clamping mechanisms 20 are arranged facing each other and are both located on the side of the clamping mechanism 20 close to the positioning mechanism 30, so as to clamp the parts inside the product through the pneumatic grippers 22.

[0022] The positioning mechanism 30 includes a lifting assembly 31 arranged between the side baffles 13, a sliding assembly 32 arranged on the bottom plate 12, a connecting rod assembly 33 connecting the lifting assembly 31 and the sliding assembly 32, and a fixing assembly 34 arranged on the side support block 14 and the sliding assembly 32.

[0023] The lifting assembly 31 includes four guide posts 311 arranged on the bottom plate 12, a V-shaped cushion block 312 arranged on the guide posts 311, and four linear bearings 313 respectively arranged between the guide posts 311 and the V-shaped cushion block 312. The guide posts 311 are fixed on the bottom plate 12 to serve as the axis for the V-shaped cushion block 312 to lift and only slide up and down in the vertical direction. The V-shaped cushion block 312 is sleeved on the guide posts 311, and the four guide posts 311 are respectively located at the four corners of the V-shaped cushion block 312 to ensure the stability of the V-shaped cushion block 312 when sliding up and down in the vertical direction. A spring is also arranged between the V-shaped cushion block 312 and the bottom plate 12 to ensure the stability during lifting. The linear bearings 313 are arranged between the guide posts 311 and the V-shaped cushion block 312 to ensure that the V-shaped cushion block 312 can slide smoothly on the guide posts 311.

[0024] The sliding assembly 32 includes a slide rail 321 disposed on the base plate 12, a slider 322 disposed on the slide rail 321, a slide plate 323 disposed on the slider 322, and a vertical plate 324 disposed on the slide plate 323. The slide rail 321 is a linear slide rail, and both it and the slider 322 are prior arts and well-known to those skilled in the art, so no detailed description will be given here. The slide plate 323 is a rectangular square plate fixed on the slider 322 to serve as a fixed base. The vertical plate 324 is vertically fixed on the slide plate 323 and is located on the side of the slide plate 323 close to the lifting assembly 31 to serve as a support structure for the link assembly 33 and the fixed assembly 34. The sliding assembly 32 is driven by a driving mechanism and is electrically controlled to ensure the precision of its moving distance.

[0025] The link assembly 33 includes an L-shaped first link 331, a straight-shaped second link 332, a support 333 fixed on the base plate 12, a first rotating shaft 334 disposed in the V-shaped cushion block 312, a second rotating shaft 335 fixed on the support 333, a third rotating shaft 336 located at the connection between the first link 331 and the second link 332, and a fourth rotating shaft 337 disposed on the vertical plate 324. The first link 331 is an L-shaped structure, and an activity slot for the first rotating shaft 334 to insert and slide along the long side is provided at the end of the long side. The end of the short side is connected to one end of the second link 322 through the third rotating shaft 336, and the connection point of the long side and the short side is connected to the second rotating shaft 335. The other end of the second link 322 is connected to the vertical plate 324 through the fourth rotating shaft 337. It can be imagined that when the sliding assembly 32 drives the second link 332 to slide in a direction away from the lifting assembly, the first link 331 is pulled. The short side of the first link 331 rotates from a state perpendicular to the base plate 12, and at the same time, the end of the long side is lifted in a direction away from the base plate 12, thereby pushing the V-shaped cushion block 312 to lift.

[0026] The fixed component 34 includes a cushion block 341 disposed on the side support block 14, a base bracket 342 disposed on the vertical plate 324, and an adjustment block 343 disposed on the base bracket 342. The cushion block 341 is disposed on the side of the side support block 14 facing the lifting component 31 for fixing the pump body to be processed. The base bracket 342 and the adjustment block 343 are located at the top of the vertical plate 324. The position of the adjustment block 343 is adjusted by a bolt structure. After the V-shaped cushion block 312 lifts the pump body, the adjustment block 343 is controlled to move by an external device, so that the adjustment block 343 and the cushion block 341 clamp the pump body to further fix the pump body and improve the fixing effect.

[0027] Compared with the prior art, the diaphragm pump movable rod positioning mechanism provided by the present invention enables, by arranging the positioning mechanism 30, the product to move to the working station and then, under the control of the electrical equipment, the sliding component 32 is driven by the driving mechanism, and the lifting component 31 is connected to control the height of the product. After reaching the working height, the pneumatic gripper 22 clamps the movable rod to be installed and, under the drive of the electric cylinder 21, approaches the installation point of the product and abuts against the designated position. The whole process adopts electrical control to ensure accurate positioning of the installation, reduce the installation error, realize full automation, and ensure the working efficiency of the assembly.

[0028] The above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are all covered by the claims of the present invention.

Claims

1. A positioning mechanism for the movable rod of a diaphragm pump, characterized in that: The positioning mechanism of the diaphragm pump movable rod includes two clamping mechanisms and a positioning mechanism disposed between the clamping mechanisms. The positioning mechanism includes a lifting assembly, a sliding assembly, and a connecting rod assembly connecting the lifting assembly and the sliding assembly. The lifting assembly includes four guide posts, a V-shaped cushion block disposed on the guide posts, and four linear bearings respectively disposed between the guide posts and the V-shaped cushion block. The sliding assembly includes a slide rail, a slider disposed on the slide rail, a slide plate disposed on the slider, and a vertical plate disposed on the slide plate. The slide rail is a linear slide rail. The slide plate is a rectangular square plate fixed on the slider. The vertical plate is vertically fixed on the slide plate and is located on the side of the slide plate close to the lifting assembly. The connecting rod assembly includes an L-shaped first connecting rod, a straight-shaped second connecting rod, a fixed support, a first rotating shaft disposed in the V-shaped cushion block, a second rotating shaft fixed on the support, a third rotating shaft located at the connection of the first connecting rod and the second connecting rod, and a fourth rotating shaft disposed on the vertical plate. The first connecting rod is an L-shaped structure. An activity groove for inserting the first rotating shaft and sliding along the long side is provided at the end of the long side. The end of the short side is connected to one end of the second connecting rod through the third rotating shaft. The connection point of the long side and the short side is connected to the second rotating shaft. The other end of the second connecting rod is connected to the vertical plate through the fourth rotating shaft.

2. The diaphragm pump movable rod positioning mechanism according to claim 1, characterized in that: The positioning mechanism of the diaphragm pump movable rod further includes a frame, which includes a pair of brackets supporting the clamping mechanisms and a bottom plate for placing the positioning mechanism.

3. The diaphragm pump moving rod positioning mechanism according to claim 2, wherein: The bottom plate is a rectangular plate, on which a pair of side stop blocks and a side support block are provided.

4. The diaphragm pump movable rod positioning mechanism according to claim 2, wherein: The clamping mechanism includes an electric cylinder disposed on the bracket and a pneumatic gripper fixed on the electric cylinder.

5. The diaphragm pump movable rod positioning mechanism according to claim 1, characterized in that: The four guide posts are respectively located at the four corners of the V-shaped cushion block.

6. The diaphragm pump movable rod positioning mechanism according to claim 1, characterized in that The sliding assembly is driven by a driving mechanism.

7. The diaphragm pump movable rod positioning mechanism according to claim 3, wherein: The positioning mechanism further includes a fixing assembly disposed on the sliding assembly. The fixing assembly includes a cushion block disposed on the side support block, a base bracket disposed on the vertical plate, and an adjustment block disposed on the base bracket. The cushion block is disposed on the side of the side support block facing the lifting assembly.

8. The diaphragm pump movable rod positioning mechanism according to claim 7, wherein: The base bracket and the adjustment block are located at the top of the vertical plate, and the position of the adjustment block is adjusted by a bolt structure.

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