CN214519743U - Automatic balancing machine and workpiece clamping mechanism thereof - Google Patents

Abstract

The utility model relates to a through-flow fan blade processing equipment field especially relates to an automatic balancing machine and work piece press from both sides dress mechanism thereof. A workpiece clamping mechanism comprises a movable bracket and a clamping assembly arranged on a movable rack; the clamping assembly comprises a manipulator and a clamping cylinder arranged at the end part of the manipulator; the clamping assemblies are provided with a plurality of groups, and the mechanical arms of the clamping assemblies can clamp workpieces at the same position in the moving process. In the technical scheme, a plurality of groups of clamping assemblies are arranged while taking and placing, the number of workpieces detected by the balancing machine is increased in unit time, and the efficiency is remarkably improved.

Description

Automatic balancing machine and workpiece clamping mechanism thereof

Technical Field

The utility model relates to a through-flow fan blade processing equipment field especially relates to an automatic balancing machine and work piece press from both sides dress mechanism thereof.

Background

The cross-flow fan is also called a cross-flow fan, and the impeller is multi-blade type and long cylindrical and is provided with forward multi-wing blades. When the impeller rotates, airflow enters the blade grids from the opening position of the impeller, passes through the inside of the impeller and is discharged into the volute from the blade grids on the other side to form working airflow. The flow of the air flow in the impeller is complicated, the speed field of the air flow is unstable, and a vortex is also present in the impeller, the center of which is located near the volute tongue. The existence of the vortex enables the output end of the impeller to generate circulating flow, and outside the vortex, an airflow streamline in the impeller is arc-shaped. Thus, the flow velocity at each point on the outer circumference of the impeller is non-uniform, with greater velocity nearer the vortex core and less velocity nearer the volute. The air flow velocity and pressure at the fan outlet are not uniform, so the flow coefficient and pressure coefficient of the fan are averages. The position of the vortex has great influence on the performance of the cross flow fan, the center of the vortex is close to the inner circumference of the impeller and is close to the volute tongue, and the performance of the fan is good; the vortex center is far away from the vortex tongue, so that the area of circulating flow is increased, the efficiency of the fan is reduced, and the unstable degree of flow is increased.

The cross-flow fan mainly comprises an impeller, an air duct and a motor. The impeller material is generally aluminum alloy or engineering plastic. The aluminum alloy impeller has high strength, light weight and high temperature resistance, and can keep stable operation for a long time without deformation; the plastic impeller is formed by injection molding of a mold and ultrasonic welding, is generally used in occasions with low rotating speed and has larger diameter. The air duct is generally formed by punching and molding a metal sheet, and can also be cast by plastic or aluminum alloy. The casing adopts streamlined design, can effectively reduce the loss of air current, makes the work efficiency of fan improve greatly.

The cross-flow fan blade balancing machine is mainly applied to balance correction of cross-flow fans of air conditioners, namely impellers in cross-flow fans and other similar rotating workpieces.

Under ideal conditions, when the cross-flow fan blade rotates or does not rotate, the pressure generated by the bearing is the same, and the cross-flow fan blade is a balanced cross-flow fan blade. However, the cross-flow fan blade in the engineering has many factors such as asymmetric geometric shapes due to uneven material or blank defects, errors generated in processing and assembling, and even design, so that the centrifugal inertia force generated by each tiny particle on the cross-flow fan blade cannot be counteracted mutually when the cross-flow fan blade rotates. The centrifugal inertia force acts on the machinery and the foundation through the bearing, so that vibration is caused, noise is generated, bearing abrasion is accelerated, the service life of the machinery is shortened, and destructive accidents can be caused in severe cases.

For this purpose, the rotor must be balanced to the level of precision permitted for balancing, or to the extent that the amplitude of the mechanical vibrations thus generated falls within the permitted range. The signal acquisition part is used for the collection and the preliminary treatment of rotor vibration signal, divide into rotational speed collection and centrifugal force and adopts, and the rotational speed of work piece is first measured to the balancing machine, just can confirm centrifugal force's size, and the rotor can arouse mechanical part's vibration when rotatory, and the sensor can be collected vibration signal, sends central processing unit after certain processing.

In modern machines, the calibration of the balancing machine comprises three items: calibrating the magnitude and the phase of the system unbalance; calibrating the sensitivity; and the zero phase calibration is firstly the calibration of the magnitude and the phase of the system unbalance. Assuming that the unbalance amount of the verification rotor subjected to high-precision balance is zero, when only the verification rotor is placed, a vibration signal still exists, analysis can know that the vibration signal is generated under the action of a combined vector of a system unbalance vector and a verification rotor unbalance vector, and the unbalance amount of the verification rotor is zero at the moment, namely the system unbalance amount is reflected to the verification rotor or a flywheel and is a fixed-magnitude and fixed-phase amount.

The dynamic balance test has the following effects: the rotor and the product formed by the rotor are improved in quality, noise and vibration are reduced, the trial service life of a supporting part (bearing) is prolonged, and the power consumption of the product is reduced.

At present, a balancing machine in a workshop generally only has one group of mechanical arms and simultaneously undertakes the work of clamping and placing workpieces.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a work piece presss from both sides dress mechanism for set up the multiunit manipulator, get the limit and put the raise the efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: comprises a movable bracket and a clamping assembly arranged on a movable rack; the clamping assembly comprises a manipulator and a clamping cylinder arranged at the end part of the manipulator; the clamping assemblies are provided with a plurality of groups, and the mechanical arms of the clamping assemblies can clamp workpieces at the same position in the moving process. In the technical scheme, a plurality of groups of clamping assemblies are arranged while taking and placing, the number of workpieces detected by the balancing machine is increased in unit time, and the efficiency is remarkably improved.

Preferably, the manipulator comprises a fixing frame and a clamping arm which are used for respectively positioning two axial end parts of the workpiece, and the clamping cylinder can control the clamping arm to be close to or far away from the fixing frame. In the technical scheme, the clamping cylinder drives the clamping arm to grab the workpiece or place the workpiece on a required station and loosen the workpiece, the structure is reasonable, and the workpiece is not easy to drop when being clamped.

Preferably, the manipulator is arranged along the axial direction of the workpiece, the two clamping arms are movably arranged on the manipulator, and the two clamping arms are distributed on two sides of the fixing frame. In the technical scheme, the clamping cylinder in the clamping cylinder is used for clamping the workpiece or placing the workpiece on a required station.

Preferably, the clamping cylinder comprises a lifting cylinder A, a guide pillar A, a guide sleeve A and a grabbing cylinder connected with the clamping arms, and the grabbing cylinder can control the clamping arms to be close to or far away from the fixing frame from two sides. In the technical scheme, the clamping cylinder in the clamping cylinder is used for clamping the workpiece or placing the workpiece on the detection station.

Preferably, the lifting cylinder A can control the clamping assembly to ascend or descend relative to the movable support, and the guide pillar A and the guide sleeve A ensure accurate positioning and stroke guiding of the lifting cylinder A and the grabbing cylinder. In the technical scheme, the lifting cylinder A can control the clamping assembly to leave the upper part of the detection station after clamping the workpiece or leave the upper part of the detection station after placing the workpiece to the detection station.

Preferably, a detection platform is arranged below the clamping assembly, the movable support is arranged on a cantilever of the cross-sliding crane, and the cross-sliding crane can control the movable support to horizontally move relative to the detection platform. In the technical scheme, the transverse moving crane drives the moving support to move on the detection platform so as to meet the requirements of clamping workpieces on a plurality of detection stations.

An automatic balancing machine comprising a workpiece clamping mechanism as described in any one of the above.

Preferably, the automatic feeding device comprises a rack, wherein a feeding transmission mechanism and a discharging transmission mechanism are arranged on the rack, a detection platform is arranged between the feeding transmission mechanism and the discharging transmission mechanism, a detection seat is arranged on the detection platform, two sides of the detection seat are provided with erection openings, and workpieces needing to be detected are placed on the erection openings.

Preferably, a workpiece lifting mechanism connected with the detection seat or arranged in the detection platform is arranged below the detection seat, and the workpiece lifting mechanism comprises a lifting cylinder B, a plurality of guide columns B and guide sleeves B which are circumferentially and regularly arranged; the lifting cylinder B can jack up the detection seat to lift the workpiece to a corresponding height for clamping by the manipulator. In the technical scheme, the lifting cylinder B jacks up the detection seat so as to enable the clamping mechanism to be convenient to clamp.

Drawings

Fig. 1 is a schematic diagram of a C-direction structure of an automatic balancing machine for cross-flow fan blades.

Fig. 2 is a schematic view of an a-direction structure of an automatic balancing machine for cross-flow fan blades when clamping a workpiece.

Fig. 3 is a schematic diagram of a B-direction structure of an automatic balancing machine for cross-flow fan blades when clamping a workpiece.

Fig. 4 is a schematic view of an a-direction structure of a detection seat of an automatic balancing machine for cross-flow fan blades.

Fig. 5 is a schematic diagram of a B-direction structure of a detection seat of an automatic balancing machine for cross-flow fan blades.

Fig. 6 is a schematic view of an a-direction structure of a workpiece compensation balance block on a detection seat of an automatic balancing machine for cross-flow fan blades.

Fig. 7 is a schematic view of a B-direction structure of a workpiece compensation balance block on a detection seat of an automatic balancing machine for cross-flow fan blades.

Fig. 8 is a schematic view of an a-direction structure of an automatic balancing machine for cross-flow blades in a lifting state of a detection seat.

Fig. 9 is a schematic diagram of a B-direction structure of an automatic balancing machine for cross-flow blades in a lifting state of a detection seat.

Fig. 10 is a schematic view of an a-direction structure of an automatic balancing machine for cross-flow fan blades when an insert sheet taking machine does not work.

Fig. 11 is a schematic view of an a-direction structure of a moving balance block on an insert sheet taking machine of an automatic balancing machine for cross-flow fan blades.

Fig. 12 is a schematic structural diagram of a direction B of a moving balance block on an insert sheet taking machine of an automatic balancing machine for cross-flow fan blades.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The automatic balancing machine comprising the workpiece clamping mechanism shown in fig. 1-12 comprises a frame 1, a cross traveling crane 2, and the workpiece clamping mechanism arranged on a cantilever of the cross traveling crane 2, wherein the frame 1 is provided with a feeding transmission mechanism 3, a blanking transmission mechanism 4, a detection platform 5 arranged between the feeding transmission mechanism 3 and the blanking transmission mechanism 4, a detection seat 6 arranged on the detection platform 5, and an inserting sheet taking mechanism arranged at the side end of the detection seat 6; the workpiece clamping mechanism comprises a movable support 7 and clamping assemblies arranged on the movable rack 1, each clamping assembly comprises a manipulator 8 and clamping cylinders 9 arranged at the end parts of the manipulators 8, the clamping assemblies are provided with a plurality of groups, and the manipulators 8 of the clamping assemblies can clamp workpieces at the same position in the movement process; a workpiece lifting mechanism connected with the detection seat 6 or arranged in the detection platform 5 is arranged below the detection seat 6, and the workpiece lifting mechanism can act on the detection seat 6 to lift the detection seat; a driving device is arranged in the detection platform 5 and can drive the workpiece on the detection seat 6 to rotate; the detection seats 6 are multiple, and the multiple detection seats 6 can independently detect the balance of the workpiece. In the technical scheme, a plurality of groups of clamping assemblies are arranged, the clamping assemblies are taken and placed at the same time, and the number of workpieces to be clamped in unit time is increased; moreover, the number of the detection seats 6 is increased, the number of the detection workpieces is increased in unit time, the efficiency is greatly improved, and the productivity is increased.

More specifically, the manipulator 8 is provided with a fixed frame 10 and two clamping arms 11 which are used for respectively positioning two axial end parts of the workpiece along the axial direction of the workpiece, the clamping cylinder 9 can control the clamping arms 11 to be close to or far away from the fixed frame 10, and the two clamping arms 11 are distributed on two sides of the fixed frame 10; the clamping cylinder 9 comprises a lifting cylinder A12, a guide pillar A13, a guide sleeve A14 and a grabbing cylinder 15 connected with the clamping arm 11, and the grabbing cylinder 15 can control the clamping arm 11 to approach or leave the fixed frame 10 from two sides; the lifting cylinder A12 can control the clamping assembly to ascend or descend relative to the movable bracket 7; the guide pillar A13 and the guide sleeve A14 ensure the accurate positioning and stroke guiding of the lifting cylinder A12 and the grabbing cylinder 15; the detection platform 5 is arranged below the clamping assembly, and the traversing crane 2 can control the moving bracket 7 to horizontally move relative to the detection platform 5. The clamping assembly is provided with two groups of existing mechanical hands 8 as shown in the figure, the two mechanical hands 8 are symmetrically arranged above the detection seat 6, workpieces move to the edge position close to the detection platform 5 from the feeding transmission mechanism 3, one mechanical hand 8 close to the feeding transmission mechanism 3 is driven by the grabbing cylinder 15 to clamp the workpieces to be detected from the edge position to the detection seat 6, the lifting cylinder 12A drives the mechanical hand to leave the position above the detection seat to clamp another workpiece from the edge position to the other detection seat, and at the moment, the other mechanical hand clamps the detected workpieces from the first detection seat under the control of the grabbing cylinder.

More specifically, two sides of the middle of the detection seat 6 are provided with erection openings 16, and workpieces to be detected are placed on the erection openings 16; the workpiece lifting mechanism comprises a lifting cylinder B17, a plurality of guide posts B18 and guide sleeves B19 which are circumferentially and regularly arranged, and the lifting cylinder B17 can drive the guide posts B18 and the guide sleeves B19 to lift and jack up the detection seat 6; a clamping cylinder is arranged in the detection platform 5 below the detection seat 6, the clamping cylinder is arranged in the middle of the seat body and comprises a cylinder A20 and clamping parts 21 acting on two axial ends of the workpiece, and the cylinder A20 can drive the clamping parts 21 to be close to or far away from the workpiece; the clamping part 21 can extend out of the upper end face of the detection seat 6 to clamp the workpiece from two sides, and the clamping part 21 is an inclined block arranged on two sides of the upper end of the clamping cylinder. In the technical scheme, the lifting cylinder B jacks up the detection seat 6, so that the clamping mechanism can be clamped conveniently, and convenience is provided for the operation of the subsequent sheet inserting and taking machine 25; when the lifting cylinder B17 lifts the workpiece to a position to be fetched, if the workpiece needs the sheet inserting process, the clamping part 21 needs to clamp the workpiece to facilitate the sheet inserting process.

The lateral part of detecting seat 6 is equipped with inserted sheet platform 22, vertically is equipped with guide bar A23 on the inserted sheet platform 22 to and transversely be equipped with guide bar B24, inserted sheet platform 22 still is equipped with inserted sheet machine of getting 25, and inserted sheet machine of getting 25 is the lead screw motion on guide bar A23 and guide bar B24. Specifically, the insert sheet taking machine 25 comprises a main body part and an air claw 26 arranged at the front end of the main body part, and when the insert sheet taking machine 25 moves upwards through screw rod transmission, the air claw 26 can clamp a balance block at a certain position; the insert sheet taking mechanism 25 clamps the balance block and moves back to the guide rod B24 as a screw rod, and when the clamping cylinder clamps the workpiece, the insert sheet taking mechanism 25 moves towards the detection seat 6 as the screw rod moves on the guide rod A23; the front end of the insert sheet taking machine 25 can be positioned above the workpiece to add the clamped balance weight into the workpiece. In the technical scheme, the inserting sheet taking machine 25 can move up, down, left and right on the table top formed by the guide rod A23 and the guide rod B24, so that the inserting sheet taking machine can flexibly operate and is convenient for the process.

In this embodiment, the method includes:

step (1): and feeding, wherein a worker places the workpiece on the feeding conveying mechanism and conveys the workpiece to a corresponding position, and a manipulator 8 close to the feeding conveying mechanism clamps the workpiece to be detected to the detection seat 6.

Step (2): after the workpiece is positioned on the detection seat 6, the step 3 in the embodiment 2 in the chinese patent specification with publication number CN110196140A is referred to for the concrete detection matters.

And (3): and (3) compensating the balance blocks, moving the inserted sheet taking machine 25 to a certain position by a screw rod motion of a guide rod A23, clamping the balance blocks by using an air claw 26, returning to the original position, performing the screw rod motion on a guide rod B, moving the guide rod B towards the direction of a workpiece to be compensated, clamping the workpiece by using a clamping cylinder at the moment, and adding the balance blocks into the detected workpiece by using the inserted sheet taking machine.

And (4): and (4) blanking, wherein a manipulator close to the blanking transmission mechanism clamps the workpiece with the balance weight assembled and places the workpiece on the blanking transmission mechanism.

The detection steps on the other detection seats are identical to the steps described above. It is worth mentioning that a plurality of detection seats are arranged, and in the time of workpiece detection and insertion, the manipulator can place subsequent workpieces to be detected on other detection seats in advance, so that the time can be saved, and the productivity can be improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. A workpiece clamping mechanism comprises a movable bracket (7) and a clamping assembly arranged on a movable rack (1); the method is characterized in that: the clamping assembly comprises a manipulator (8) and a clamping cylinder arranged at the end part of the manipulator (8); the clamping assemblies are provided with a plurality of groups, and the mechanical arms (8) of the clamping assemblies can clamp workpieces at the same position in the moving process.

2. The workpiece clamping mechanism according to claim 1, wherein: the manipulator (8) comprises a fixing frame (10) and clamping arms (11) which are used for respectively positioning two axial end parts of the workpiece, and the clamping cylinder can control the clamping arms (11) to be close to or far away from the fixing frame (10).

3. The workpiece clamping mechanism according to claim 2, wherein: the manipulator (8) is arranged along the axial direction of a workpiece, the clamping arms (11) are movably arranged on the manipulator (8), and the two clamping arms (11) are distributed on two sides of the fixing frame (10).

4. The workpiece clamping mechanism according to claim 2, wherein: the clamping cylinder comprises a lifting cylinder A (12), a guide pillar A (13), a guide sleeve A (14) and a grabbing cylinder (15) connected with the clamping arms (11), and the grabbing cylinder (15) can control the clamping arms (11) to be close to or far away from the fixing frame (10) from two sides.

5. The workpiece clamping mechanism according to claim 4, wherein: the lifting cylinder A (12) can control the clamping assembly to ascend or descend relative to the movable support (7).

6. The workpiece clamping mechanism according to claim 4, wherein: the guide post A (13) and the guide sleeve A (14) ensure accurate positioning and stroke guiding of the lifting cylinder A (12) and the grabbing cylinder (15).

7. The workpiece clamping mechanism according to claim 1, wherein: the device is characterized in that a detection platform (5) is arranged below the clamping assembly, the movable support (7) is arranged on a cantilever of the transverse moving crane (2), and the transverse moving crane (2) can control the movable support (7) to move horizontally relative to the detection platform (5).

8. An automatic balancing machine, characterized by: comprising a workpiece clamping mechanism according to any one of claims 1 to 7.

9. The automatic balancing machine of claim 8, characterized in that: including frame (1), be equipped with material loading drive mechanism (3) and unloading drive mechanism (4) on frame (1), be equipped with testing platform (5) between material loading drive mechanism (3) and unloading drive mechanism (4), be equipped with on testing platform (5) and detect seat (6), both sides are equipped with in the middle of detecting seat (6) and erect mouth (16), erect and place the work piece that needs the detection on mouth (16).

10. The automatic balancing machine of claim 9, characterized in that: a workpiece lifting mechanism connected with the detection seat (6) or arranged in the detection platform (5) is arranged below the detection seat (6), and the workpiece lifting mechanism comprises a lifting cylinder B (17), a plurality of guide columns B (18) and guide sleeves B (19) which are circumferentially and regularly arranged; the lifting cylinder B (17) can jack up the detection seat (6) to lift the workpiece to a corresponding height for clamping by the manipulator (8).

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