CN215968800U - Tail end clamping device and engine case cover assembly - Google Patents

Abstract

The present invention provides a terminal holding device, comprising: the clamping device comprises a rotating shaft, a base, a first clamping piece, a second clamping piece and a second driving piece; the base is provided with an assembling hole for assembling the rotating shaft; the first clamping piece and the second clamping piece are arranged on the base along a first direction in an opposite way; the second driving piece arranged on the base drives the first clamping piece to move along the first direction; a first cushion block which is arranged between the first clamping piece and the second clamping piece and used for preventing the engine case cover from inclining during clamping is arranged; the first cushion block is arranged to enable the engine case cover to be kept horizontal in the clamping process (or to ensure that the engine case cover does not generate relative displacement in the clamping process); the subsequent automatic alignment accuracy is ensured while the engine case cover is prevented from being separated from the tail end clamping device due to displacement.

Description

Tail end clamping device and engine case cover assembly

Technical Field

The application relates to the field of mechanical automation, in particular to a tail end clamping device and an engine case cover assembly.

Background

The engine case cover is arranged at the opening end of the engine housing; an output shaft of the engine passes through the engine case cover and extends out of the engine case; the engine case cover is provided with an assembling hole for assembling the output shaft; a bearing and an oil seal are arranged in the assembly hole relative to the output shaft;

currently, the oil seal and the bearing are assembled on the engine case cover mostly by manual operation; in order to improve the efficiency of the process and reduce the labor cost, I prepares an automatic production line to replace the manual operation; in an automated production line, a robotic arm is generally provided to transfer various materials in the production line; for an engine case cover, the problem of 'lost parts' (the engine case cover is separated from a clamping jaw of a manipulator in the process of transferring the engine case cover by a manipulator) is easily caused because the thickness of the engine case cover is narrow, the area is large, and the claw type clamping jaw of the existing manipulator is difficult to stably grab the engine case cover; meanwhile, the clamping jaw of the existing mechanical arm is difficult to stably clamp the engine case cover, so that subsequent automatic alignment is caused to be problematic.

Disclosure of Invention

The present invention provides a tip holder device that is converted to an engine compartment cover design to solve the problems of the prior art.

An end clamp device comprising: the clamping device comprises a rotating shaft, a base, a first clamping piece, a second clamping piece and a second driving piece; the base is provided with an assembling hole for assembling the rotating shaft; the first clamping piece and the second clamping piece are arranged on the base along a first direction in an opposite way; the second driving piece arranged on the base drives the first clamping piece to move along the first direction; and a first cushion block for avoiding the inclination of the workpiece during clamping is arranged between the first clamping piece and the second clamping piece.

Preferably, the base is a rectangular plate-shaped structure; the first direction is along a length direction of the base.

Preferably, the first catch is located at a position forward of the base in the first direction; the second clamping piece is positioned at the lower position of the base.

Preferably, a third driving member is mounted on the base, and the third driving member drives the second clamping piece to move along the first direction.

Preferably, the first cushion block is mounted on the bottom end face of the base, and a plurality of second cushion blocks are mounted between the upper end face of the first cushion block and the bottom end face of the base.

Preferably, a third cushion block can be installed on the opposite side surfaces of the first clamping piece and the second clamping piece; the third cushion block is made of rubber.

Preferably, the first block is "horseshoe-shaped".

Preferably, the base is provided with an avoidance groove; the upper end surface of the base is provided with a fixing piece for fixing the proximity sensor; and the proximity sensor arranged on the fixing piece is aligned with the clamping station through the avoiding groove and is used for detecting whether the workpiece is clamped on the clamping station or not.

The utility model provides a mechanical arm which comprises the tail end clamping device.

The utility model provides an engine case cover assembly, comprising:

the material table is used for placing the oil seal and the bearing;

a transfer apparatus for transporting the engine compartment cover;

a hydraulic device for fitting the bearing and the oil seal to the engine case cover;

a first robot arm, the first robot arm being the robot arm of claim 9, the first robot arm for transferring the engine compartment lid on the transfer apparatus to the hydraulic apparatus; and transferring the engine case cover, to which the bearing and the oil seal are assembled, from the hydraulic equipment to the transfer equipment;

a second mechanical arm for transferring the bearing and the oil seal on the material table to the hydraulic device.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the first clamping piece and the second clamping piece along the first direction can horizontally clamp the engine case cover in a state that the engine case cover is horizontally placed; the first clamping piece and the second clamping piece are respectively clamped at two opposite end positions of the engine case cover; the first cushion block is arranged to enable the engine case cover to be kept horizontal in the clamping process (or to ensure that the engine case cover does not generate relative displacement in the clamping process); the subsequent automatic alignment accuracy is ensured while the engine case cover is prevented from being separated from the tail end clamping device due to displacement.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a perspective view of an end clamp provided herein.

Fig. 2 is a perspective view of another angle of the end clamp provided herein.

Fig. 3 is a block diagram of a robotic arm provided herein.

FIG. 4 is an apparatus diagram of an engine compartment cover assembly provided by the present application.

Fig. 5 is a schematic view of an engine compartment cover clamping device provided by the present application.

Fig. 6 is a structural view of an engine compartment cover.

Description of the drawings: 1-base, 2-second driving piece, 3-third driving piece, 4-proximity sensor, 5-first clamping piece, 6-rotating shaft, 7-avoidance groove, 8-first cushion block, 9-fixing piece, 10-second clamping piece, 11-assembly hole, 12-first mechanical arm, 13-conveying device, 14-hydraulic device, 15-second mechanical arm, 16-material table and 17-engine box cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

At present, the assembling process of the engine case cover is difficult to realize automation, and one reason is that: the engine case cover has a flat structure, the thickness of the engine case cover is narrow, the area of the engine case cover is large, the tail end clamping device of the mechanical arm in the prior art cannot be stably clamped in the process of clamping the engine case cover, for example, in the clamping process, because the tail end clamping device is difficult to keep the proper and uniform clamping force, and the side face of the clamped engine case cover is not necessarily well attached to the clamping face of the tail end clamping device, the engine case cover is easy to incline, so that the problems that an automatic assembly line cannot be aligned, and the engine case cover is easy to fall off from a clamp of the tail end clamping device in the clamping process are caused; in order to solve the above technical problems, the present invention provides a terminal clamping device, which can horizontally and stably clamp an engine case cover, so as to solve the above technical problems.

Referring to fig. 1 to 6, fig. 1 is a perspective view of an end clamping device provided in the present application; FIG. 2 is a perspective view of another angle of the end clamp provided herein; FIG. 3 is a block diagram of a robotic arm provided herein; FIG. 4 is an equipment diagram of an engine compartment cover assembly provided herein; FIG. 5 is a schematic view of an engine compartment cover clamping arrangement of the end clamping device provided herein; fig. 6 is a structural view of an engine compartment cover.

Specifically, the present invention provides a terminal holding device, comprising: the device comprises a rotating shaft 6, a base 1, a first clamping piece 5, a second clamping piece 10 and a second driving piece 2; the base 1 is provided with an assembling hole 11 for assembling the rotating shaft; the first clamping piece 5 and the second clamping piece 10 are arranged on the base 1 along a first direction and oppositely; the second driving piece 2 arranged on the base 1 drives the first clamping piece 5 to move along the first direction; a first spacer 8 for preventing the engine case cover 17 from tilting during clamping is installed at a position between the first card member 5 and the second card member 10.

In this embodiment, the first clamping piece 5 can move in the first direction under the driving of the second driving piece 2, and the first clamping piece 5 clamps or releases the engine case cover 17 by moving relative to the second clamping piece 10, compared with a clamp of a traditional clamping device in a hinge mode, a clamping surface of the clamping piece can move horizontally over against the side surface of the engine case cover 17, so that the clamping surfaces of the first clamping piece 5 and the second clamping piece 10 are attached to the side surface of the engine case cover 17 during clamping, and the engine case cover 17 is clamped more stably.

The first clamping piece 5 and the second clamping piece 10 clamp two ends of the engine case cover 17 from two opposite directions; the first cushion block 8 is positioned between the engine case cover 17 and the bottom end face of the base 1, and the thickness of the first cushion block 8 is set according to the distance between the upper end face of the engine case cover 17 and the bottom end face of the base 1 when the engine case cover is clamped; the first cushion block 8 is used for limiting the clamped engine case cover 17 and preventing the engine case cover 17 from inclining during clamping.

As shown in fig. 6, the engine case cover 17 is not a regular cuboid structure, and the surface thereof includes designed protrusions and recesses, and the irregular shape of the surface of the engine case cover 17 affects the fitting of the first clip piece 5 or the second clip piece 10 with the side surface thereof, thereby affecting the clamping force of the alignment of the terminal clamping device, and further, in order to solve the above problem, the second clip piece 10 is provided with a boss in a concave-convex shape relative to the surface of the engine case cover 17, so that the clamping surface of the second clip piece 10 can keep fitting with the side surface of the engine case cover 17, thereby increasing the clamping stability; the first latch 5 may also be provided with a recess or a projection in the shape of a recess or a projection with respect to the surface of the engine compartment cover 17.

In a preferred embodiment, in order to reduce the overall area of the end gripping means; the base 1 is a rectangular plate-shaped structure; the first direction is along the length direction of the base 1; the first clamping piece 5 is positioned in the front position of the base 1 along the first direction; the second clip member 10 is located at a lower position of the base 1.

In a preferred embodiment, the first card member 5 and the second card member 10 are each drivable by a drive member, and in particular, as shown in fig. 1 and 2, a third drive member 3 is mounted on the base 1, the third drive member 3 driving the second card member 10 in the first direction; two fastener pairs of two driving piece drives respectively engine case lid 17 carries out the centre gripping, and its advantage lies in: on one hand, the stroke of a single clamping piece in the clamping process is reduced, and the working efficiency of the tail end clamping device is improved; on the other hand, the holding stability of the tip holding device to the engine case cover 18 can be increased.

In a preferred embodiment, the first cushion block 8 is mounted on the bottom end surface of the base 1, and a plurality of second cushion blocks are mounted between the upper end surface of the first cushion block 8 and the bottom end surface of the base 1; the second cushion block is used for compensating the thickness of the first cushion block 8, so that the tail end clamping device can also be suitable for clamping engine case covers of other models.

In order to solve the above problem, in a preferred embodiment, a third pad (not shown) may be installed on the opposite side surfaces of the first card member 5 and the second card member 10; the third cushion block is made of rubber; the third cushion block can change rigid contact between the first clamping piece 5 and the second clamping piece 10 and the engine case cover 17 into flexible or elastic contact, so that the first clamping piece 5 and the second clamping piece 10 are prevented from damaging the engine case cover 17 in the clamping process; on the other hand, the third cushion block made of rubber can improve the friction force between the first clamping piece 5, the second clamping piece 10 and the engine case cover 17, and increase the stability of clamping.

Since the surface of the engine case cover 17 has the protrusion, in order that the first spacer 8 does not generate a spatial limitation on the protrusion of the surface of the engine case cover 17, the first spacer 8 may be provided with an avoiding hole or an avoiding groove opposite to the protrusion of the surface of the engine case cover 17; in a particular embodiment, as shown in fig. 1 and 2, the first head block 8 may be "horseshoe" -shaped; the first cushion block 8 can also be of other plate-shaped structures provided with avoidance holes or avoidance grooves; the first spacer 8 may also be two independent spacers, which are respectively supported on two sides of the upper surface of the engine compartment cover 17.

The tail end clamping device is provided with a proximity sensor 4 for detecting whether the clamping position clamps the engine case cover 17; the proximity sensor 4 can be an infrared proximity sensor, and can also be other types of proximity sensors; in a specific embodiment, as shown in fig. 1 and 2, the base 1 is provided with an avoiding groove 7; a fixing part 9 for fixing the proximity sensor 4 is arranged on the upper end surface of the base 1; the proximity sensor 4 arranged on the fixing part 9 is aligned with the clamping station through the avoidance groove 7; further, the fixing member 9 may be a metal plate bent into an "L" shape, one folding surface of the metal plate is provided with a bolt mounting hole, and the other folding surface of the metal plate is provided with a proximity sensor mounting hole; furthermore, the fixing member 9 may also be two metal plates hinged to each other, the proximity sensor 4 is mounted on one of the metal plates, the angle of the proximity sensor 4 can be adjusted by the design of the two metal plates hinged to each other, and the two metal plates hinged to each other are mounted with a locking member for limiting the opening and closing angle thereof.

As shown in fig. 3, the present invention further provides a robot arm, comprising the terminal holding device as described above; the mechanical arm can be a six-axis mechanical arm; the tail end clamping device is arranged at the tail end position of the six-axis manipulator; a first driving piece for driving the tail end clamping device to rotate is arranged on the six-shaft manipulator; the first driving piece drives the rotating shaft 6 to rotate.

As shown in fig. 4, the present invention provides an engine case cover assembly including:

a material table 16, wherein the material table 16 is used for placing the oil seal and the bearing;

a transfer device 13, the transfer device 13 being used for transporting the engine compartment cover 17;

a hydraulic device 14 for fitting the bearing and the oil seal to the engine case cover 17, the hydraulic device 14;

a first robot arm 12, said first robot arm 12 being the robot arm of claim 9, said first robot arm 12 being used to transfer said engine compartment lid 17 on said transfer apparatus 13 to said hydraulic apparatus 14; and the engine case cover 17 with the bearings and the oil seal assembled is transferred from the hydraulic equipment to the transfer equipment 13;

a second mechanical arm 15, the second mechanical arm 15 being used to transfer the bearing and the oil seal on the material table 16 to the hydraulic device 14.

Further, a first vertical rod for stacking the bearings and a second vertical rod for stacking the oil seals are vertically arranged on the table top of the material table 16; a plurality of first vertical rods and a plurality of second vertical rods can be arranged on the material platform 16, and the first vertical rods and the second vertical rods are equidistantly distributed along one direction; the equidistant distribution is convenient for the operator to program the procedure that the second mechanical arm 15 grabs the oil seal arranged on the first vertical rod and the bearing on the second vertical rod.

Further, the conveying device 13 comprises a first conveying device, a transition platform and a second conveying device;

further, the first conveying device is further provided with a pushing device and a material blocking device located on a conveying path of the first conveying device, the pushing device is used for pushing the engine case cover 17 to the transition platform, the material blocking device is located at the upstream of the pushing device, and the material blocking device limits the movement of the engine case cover 17 so as to control the interval and the number of the engine case covers 17 conveyed to the pushing device; the second transfer device is used to transfer the assembled engine compartment cover 17 to the next process.

In order to assemble the oil seal and the bearing to the engine case cover 17, a tool for assembling the oil seal and the bearing to the engine case cover 17 is mounted on the hydraulic equipment 14; the frock includes: a first ejector rod and a workbench; the workbench comprises a second ejector rod, a movable seat and a fixed seat; the movable seat comprises a working surface at the upper end of the movable seat; the movable seat can be movably arranged above the fixed seat along a first direction; the second ejector rod is arranged on the fixed seat along the first direction, and the movable seat is provided with a first assembling hole relative to the second ejector rod for the second ejector rod to pass through; the first ejector rod is arranged along the first direction, is positioned above the working surface and is aligned with the first assembling hole; a driving mechanism is arranged to drive the first ejector rod to move along the first direction; the first direction is perpendicular to the working surface;

further, a first assembling seat for assembling an oil seal is installed at the lower end of the first ejector rod; the upper end of the second ejector rod is provided with a second assembling seat for assembling a bearing; the first assembling seat and the second assembling seat are cylindrical structures which are directly arranged opposite to the oil seal and the inner ring of the bearing respectively; the diameter of the first assembling seat is slightly larger than that of the inner ring of the oil seal so that the oil seal can be clamped in the first assembling seat, the diameter of the first assembling seat has a proper range, and the problem that the oil seal cannot be separated from the first assembling seat in the assembling process due to overlarge friction force between the first assembling seat and the oil seal is avoided; the diameter of the second assembling seat is smaller than that of the inner ring of the bearing, and the area of the second ejector rod is larger than that of the inner ring of the bearing, so that the bearing can be placed on the upper end face of the second ejector rod and sleeved outside the second assembling seat; the first assembling hole is circular, and the diameter of the first assembling hole is larger than or equal to that of the bearing; so that the bearing placed on the upper end surface of the second ejector rod can pass through the first assembling hole to be assembled on the engine case cover.

In the operation process, the first ejector rod is driven by the driving mechanism to move downwards; the movable seat moves downwards under the pushing of the first ejector rod, and a second ejector rod fixedly arranged on the fixed seat moves upwards relative to the movable seat; and the first ejector rod and the second ejector rod move oppositely relative to the movable seat to install the oil seal and the bearing on an engine case cover fixed on the movable seat from two opposite side positions of the movable seat respectively.

In one embodiment, the engine case cover assembly works in the following way:

s1, the first mechanical arm 12 detects whether the engine box cover 17 is arranged on the transition platform of the conveying device 13, and if the engine box cover 17 is arranged, the engine box cover 17 is grabbed;

and S2, after the first mechanical arm 12 grabs the engine case cover 17, the first mechanical arm moves to a safety position on one side of the hydraulic equipment to stop, and simultaneously sends a first action signal to the second mechanical arm 15. A

And S3, after receiving the first action signal, the second mechanical arm 15 moves to the material table 16 to sequentially grab one oil seal and one bearing.

And S4, after the second mechanical arm 15 grabs the oil seal and the bearing, moves to a safe position on the other side of the hydraulic equipment 14, confirms that the engine case cover 17 is not arranged on the workbench of the hydraulic equipment 14, and after the first ejector rod is positioned at the top dead center, places the oil seal on a first assembly seat of the first ejector rod, and places the bearing on a second assembly seat of the second ejector rod.

S5, the second robot 15 is stopped at the safety position at the side of the hydraulic device 14 after completing the placing step, and sends a second action signal to the first robot 12.

And S6, after the first mechanical arm 12 receives the second action signal and confirms that the engine case cover 17 is not arranged on the workbench, the first ejector rod is positioned at the top dead center and the oil seal and the bearing are arranged on the hydraulic equipment, the first mechanical arm enters the hydraulic equipment and places the engine case cover 17 grabbed by the hydraulic equipment on the working surface of the workbench.

And S7, after the first mechanical arm 12 finishes the steps, retreats to a safe position at one side of the hydraulic equipment, and sends a third action signal to the hydraulic equipment.

S8: and the hydraulic equipment receives the third action signal and then executes press-fitting action, namely, the first ejector rod is pressed downwards, and the oil seal and the bearing are assembled on the engine case cover 17.

S9: after the above steps are completed, the first mechanical arm 12 enters the hydraulic device to grab the engine case cover 17 on the workbench after confirming that the engine case cover 17 is on the workbench and the first ejector rod is at the top dead center.

S10: the first robot arm 12 transfers the gripped engine compartment cover 17 to the second transfer device.

And S11, the second conveying device conveys the assembled engine case cover 17 to the next process.

The engine case cover assembling assembly can automatically automate the engine case cover assembling process, thereby improving the working efficiency and saving the human resources of the company.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a detailed description of the utility model that enables one skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An end clamp device, comprising: the clamping device comprises a rotating shaft (6), a base (1), a first clamping piece (5), a second clamping piece (10) and a second driving piece (2); the base (1) is provided with an assembling hole (11) for assembling the rotating shaft; the first clamping piece (5) and the second clamping piece (10) are arranged on the base (1) along a first direction in an opposite way; the second driving piece (2) arranged on the base (1) drives the first clamping piece (5) to move along the first direction; and a first cushion block (8) which prevents the workpiece from inclining during clamping is arranged between the first clamping piece (5) and the second clamping piece (10).

2. An end clamp device according to claim 1, characterized in that said base (1) is of rectangular plate-like configuration; the first direction is along the length direction of the base (1).

3. An end clamp according to claim 2, wherein said first catch (5) is located at a forward position of said base (1) in said first direction; the second clamping piece (10) is positioned below the base (1).

4. An end clamp according to claim 1, wherein a third drive member (3) is mounted on said base (1), said third drive member (3) driving said second jaw member (10) in said first direction.

5. An end gripping device according to claim 3, wherein the first block (8) is mounted to the bottom end surface of the base (1), and a plurality of second blocks are mounted between the upper end surface of the first block (8) and the bottom end surface of the base (1).

6. An end clamp according to claim 1, wherein the first jaw member (5) and the second jaw member (10) are provided with third pads on opposite sides thereof; the third cushion block is made of rubber.

7. An end clamp according to claim 1, characterised in that the first spacer (8) is "horseshoe-shaped".

8. The terminal clamping device according to claim 1, characterized in that the base (1) is provided with an avoiding groove (7); a fixing piece (9) for fixing the proximity sensor (4) is arranged on the upper end face of the base (1); and the proximity sensor (4) arranged on the fixing part (9) penetrates through the avoidance groove (7) to align to the clamping station, and is used for detecting whether the workpiece is clamped on the clamping station or not.

9. A robotic arm comprising an end gripping device according to any one of claims 1 to 8.

10. An engine case cover assembly, comprising:

a material table (16), wherein the material table (16) is used for placing the oil seal and the bearing;

a transfer device (13), the transfer device (13) being used for transporting the engine compartment cover (17);

a hydraulic device (14), the hydraulic device (14) being for fitting the bearing and the oil seal to the engine case cover (17);

-a first robot arm (12), the first robot arm (12) being a robot arm according to claim 9, the first robot arm (12) being adapted to transfer the engine compartment lid (17) on the transfer device (13) to the hydraulic device (14); and transferring the engine case cover (17) with the bearings and the oil seal assembled thereto from the hydraulic equipment to the transfer equipment (13); and the number of the first and second groups,

a second mechanical arm (15), the second mechanical arm (15) being used to transfer the bearing and the oil seal on the material table (16) to the hydraulic equipment (14).

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