CN210126878U - Flexible positioning device for workpiece - Google Patents

Abstract

The utility model provides a flexible positioning device for workpieces, which comprises a base plate, two sliding plates arranged on the base plate in a sliding way and a driving mechanism used for driving the two sliding plates to move relatively; a plurality of stop levers are respectively arranged on the two sliding plates; and the at least one sliding plate is also provided with a buffer mechanism, and the stop lever on the sliding plate is arranged on the sliding plate through the buffer mechanism. The utility model provides a flexible positioner of work piece, pin pass through buffer gear and set up on the sliding plate, and the pin can reduce the pin for the impact force of work piece through the removal in the opposite direction when contacting with the work piece, reduces the oppression of two rows of pins to the work piece when being close to each other to can avoid causing the damage to the work piece effectively. Meanwhile, the stop levers can automatically adjust the position in a small range when contacting with the workpiece, so that the distance between the two stop levers is always kept equal to the size of the workpiece, the two rows of stop levers can not be completely parallel, and the stop levers are greatly convenient to mount.

Description

Flexible positioning device for workpiece

Technical Field

The utility model relates to the field of mechanical equipment, in particular to flexible positioner of work piece.

Background

During production of the production line, workpieces are often conveyed among the processes through the conveying belt, and in some processes, the workpieces on the conveying belt need to be positioned to enable the workpieces to be located at target positions, and if the workpieces on the conveying belt need to be photographed to obtain product information on the workpieces, or the workpieces need to be stably stopped at appropriate positions when a manipulator is required to grab the workpieces on the conveying belt to other stations; in the prior art, a liftable positioning device is generally arranged below a conveying belt, the positioning device comprises a front row of stop levers and a rear row of stop levers which can move relatively, and the stop levers can pass through a gap of the conveying belt; when the workpiece needs to be clamped and positioned, the positioning device is lifted upwards to enable the workpiece to be placed between the two rows of stop levers, wherein the front row of stop levers can stop the workpiece from going forwards continuously, and then the front row of stop levers and the rear row of stop levers are close to each other to clamp and position the workpiece, so that the workpiece is positioned at a target position; however, when the workpiece is a fragile product such as panel glass, and the like, due to the lack of an effective buffer design of the conventional workpiece positioning device, the stop lever is very easy to press the workpiece when clamping and positioning the workpiece, so that the workpiece is damaged, and the qualified rate of product production is influenced; therefore, a positioning device suitable for fragile workpieces is urgently needed in the market.

SUMMERY OF THE UTILITY MODEL

For solving the not enough that mentions among the above-mentioned prior art, the utility model provides a flexible positioner of work piece to be applicable to the centre gripping location like breakable work piece such as glass panels. The utility model provides a flexible positioning device for workpieces, which comprises a base plate, two sliding plates arranged on the base plate in a sliding way and a driving mechanism used for driving the two sliding plates to move relatively; a plurality of stop levers are respectively arranged on the two sliding plates; and the at least one sliding plate is also provided with a buffer mechanism, and the stop lever on the sliding plate is arranged on the sliding plate through the buffer mechanism.

Further, the buffer mechanism comprises a base, a buffer slide rail, a buffer slide block and a buffer tension spring; the stop lever is fixedly arranged on the buffer sliding block; the buffer sliding block is arranged on the buffer sliding rail in a sliding manner; the buffer slide rail is fixedly arranged on the sliding plate; the base is fixedly arranged on the sliding plate; one end of the buffer tension spring is connected with the base, and the other end of the buffer tension spring is connected with the buffer sliding block.

Further, the buffer mechanism also comprises a buffer block; the buffer block is arranged between the buffer sliding block and the base.

Furthermore, a position detection mechanism is arranged on at least one buffer mechanism; the position detection mechanism comprises a photoelectric sensor arranged on the sliding plate and a detection baffle arranged on the buffer sliding block.

Further, the driving mechanism comprises a stepping motor and a synchronous belt module; the two sliding plates are connected with a synchronous belt in the synchronous belt module; the stepping motor is used for driving the synchronous belt to move so as to enable the two sliding plates to be close to or far away from each other.

Furthermore, the top of the stop lever is provided with a buffer ring.

Further, the buffer ring is made of rubber.

The utility model provides a flexible positioner of work piece, because the pin passes through buffer gear and sets up on the sliding plate, the pin can reduce the impact force of pin for the work piece through moving in the opposite direction when contacting with the work piece, reduces the oppression to the work piece when being close to each other of two rows of pins to can avoid causing the damage to the work piece effectively. Simultaneously, because the pin can carry out the position adjustment of small amplitude automatically when contacting with the work piece for interval between two pins remains throughout equal with the size of work piece, therefore the embodiment of the utility model provides a flexible positioner of work piece, it passes through the pin of buffer gear setting on the sliding plate, can not need strict be in on the same straight line, and two rows of pins also can not need completely parallel, have increased the fault-tolerant rate of installation, have greatly made things convenient for the installation of pin, and greatly reduce the requirement to machined part machining precision.

Drawings

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

Fig. 1 is a schematic structural view of a flexible workpiece positioning device provided by the present invention;

fig. 2 is a schematic view of a part of the structure of the flexible positioning device for workpieces according to the present invention;

fig. 3 is a schematic structural view of the buffer mechanism of the present invention;

fig. 4 is a schematic structural diagram of the driving mechanism of the present invention;

fig. 5 is a schematic view of the usage state of the present invention.

Reference numerals:

10 base plate 20 slide plate 31 stepping motor

32 synchronous belt 33 synchronous pulley 40 stop lever

41 buffer ring 50 buffer mechanism 51 base

52 buffer slide rail 53 buffer slide block 54 buffer tension spring

55 buffer block 61 photoelectric sensor 62 detects baffle

70 workpiece

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As shown in fig. 1-4, an embodiment of the present invention provides a flexible positioning device for a workpiece, including a base plate 10, two sliding plates 20 slidably disposed on the base plate 10, and a driving mechanism for driving the two sliding plates 20 to move relatively; a plurality of stop rods 40 are respectively arranged on the two sliding plates 20; at least one sliding plate 20 is further provided with a buffer mechanism 50, and the blocking rod 40 on the sliding plate 20 is arranged on the sliding plate 20 through the buffer mechanism 50.

Specifically, as shown in fig. 1, the flexible positioning device for a workpiece according to an embodiment of the present invention includes a base plate 10, two sliding plates 20, and a driving mechanism; a plurality of mutually parallel slide rails are arranged on the base plate 10, and the sliding plate 20 is arranged on the base plate 10 through the slide rails and can slide along the slide rails; each is equipped with one row of pin 40 on every sliding plate 20, the utility model discloses in the embodiment, be equipped with 4 pins 40 on every sliding plate 20, preferably, the top of pin 40 is equipped with buffer ring 41, and buffer ring 41 preferably adopts rubber material or other wear-resisting material to make. A buffer mechanism 50 is further arranged on at least one sliding plate 20, and for the sliding plate 20 provided with the buffer mechanism 50, the stop lever 40 on the sliding plate is arranged on the sliding plate 20 through the buffer mechanism 50; in the embodiment of the present invention, a buffer mechanism 50 is disposed on one sliding plate 20, 4 stop levers 40 on the sliding plate 20 are respectively connected to the sliding plate 20 through one buffer mechanism 50, and 4 stop levers 40 on the other sliding plate 20 are directly connected to the sliding plate 20.

As shown in fig. 2 and 3, the buffer mechanism 50 includes a base 51, a buffer slide rail 52, a buffer slide block 53 and a buffer tension spring 54; wherein the buffer slide rail 52 is fixedly arranged on the sliding plate 20, and the base 51 is arranged on the sliding plate 20 and is positioned at one end of the buffer slide rail 52; the buffer slide block 53 is arranged on the buffer slide rail 52 and can slide on the buffer slide rail 52, and the stop lever 40 is fixedly arranged on the buffer slide block 53; when the buffer slide block 53 slides along the buffer slide rail 52, the stop lever 40 on the buffer slide block is driven to slide together; the damper tension spring 54 is connected to the base 51 at one end and to the damper slider 53 at the other end, and exerts a tensile force on the damper slider 53 so as to have a tendency to approach the base 51, and when a force directed away from the base 51 is applied to the stopper lever 40 or the damper slider 53, the damper slider 53 is moved away from the base 51, and when the force is removed, the damper slider 53 is moved back toward the base 51. Preferably, a buffer block 55 is further disposed between the buffer sliding block 53 and the base 51, the buffer block 55 is preferably made of a material with good elasticity, such as rubber, silica gel, etc., a through hole is disposed in the middle of the buffer block 55 for the buffer spring to pass through, and the buffer block 55 can be used for limiting the minimum distance between the buffer sliding block 53 and the base 51 and also can provide a buffer effect.

Preferably, at least one of the buffer mechanisms 50 is provided with a position detection mechanism for detecting a position state of the buffer slider 53 in the buffer mechanism 50; the position detection mechanism comprises a photoelectric sensor 61 and a detection baffle 62, wherein the photoelectric sensor 61 is preferably a groove-shaped photoelectric sensor 61; as shown in fig. 2, the photoelectric sensor 61 is fixed on the sliding plate 20, and the detection baffle 62 is arranged on the buffer slide block 53; when the buffer slide block 53 drives the detection baffle 62 to slide together, the motion track of the detection baffle 62 passes through the detection notch of the photoelectric sensor 61; since the operation principle of the photoelectric sensor 61 is known to those skilled in the art, it will not be described in detail herein.

As shown in fig. 4, the driving mechanism in the embodiment of the present invention includes a stepping motor 31 and a synchronous belt module; the synchronous belt module comprises a synchronous belt wheel 33 and a synchronous belt 32; two synchronous belt wheels 33 are arranged and rotatably arranged on the substrate 10, wherein one synchronous belt wheel 33 is connected with the stepping motor 31; the synchronous belt 32 is sleeved on the synchronous belt pulley 33, and when the synchronous belt pulley 33 rotates under the driving of the stepping motor 31, the synchronous belt 32 is driven to move together; the two sliding plates 20 are both connected with a synchronous belt 32, and the connecting points are positioned at two sides of the connecting line of the two synchronous belt wheels 33; as shown in fig. 4, when the timing belt 32 is driven by the stepping motor 31 to move in the counterclockwise direction (the R direction shown in fig. 4), the two sliding plates 20 will approach each other, i.e., the distance between the two rows of the blocking levers 40 is reduced, and when the timing belt 32 is driven by the stepping motor 31 to move in the clockwise direction (the reverse direction of the R direction shown in fig. 4), the two sliding plates 20 will move away from each other, i.e., the distance between the two rows of the blocking levers 40 is increased. Preferably, as shown in fig. 1, a plurality of photoelectric sensors 61 are also disposed on the base plate 10, a detection baffle 62 used in cooperation with the photoelectric sensors 61 is disposed on one of the sliding plates 20, and the photoelectric sensors 61 and the detection baffle 62 can detect the position change of the sliding plate 20.

The embodiment of the utility model provides a flexible positioner of work piece, before carrying out the centre gripping location to the work piece, the interval between two rows of pin 40 should be greater than the size of work piece, the work piece can be arranged in between two rows of pin 40, the buffering slider 53 on buffer gear 50 is located the one end of buffering slide rail 52 at this moment; then, as shown in fig. 5, the distance between the two rows of stop levers 40 is gradually reduced by the driving mechanism until the two rows of stop levers 40 are respectively contacted with the two ends of the workpiece; if the driving mechanism still drives the two sliding blocks to approach each other, the stop lever 40 disposed on the sliding plate 20 through the buffer mechanism 50, due to the action of the buffer mechanism 50, when the stop lever 40 contacts with the workpiece, the stop lever 40 will be displaced in the direction opposite to the moving direction of the sliding plate 20 under the top contact of the workpiece, so as to effectively reduce the impact force of the stop lever 40 relative to the workpiece, and simultaneously, the distance between the two stop levers 40 is always kept equal to the size of the workpiece, and in the process, the acting force of the stop lever 40 on the workpiece is always equal to the pulling force of the buffer spring.

The utility model provides a flexible positioner of work piece, because the pin passes through buffer gear and sets up on the sliding plate, the pin can reduce the impact force of pin for the work piece through moving in the opposite direction when contacting with the work piece, reduces the oppression to the work piece when being close to each other of two rows of pins to can avoid causing the damage to the work piece effectively. And simultaneously, the embodiment of the utility model provides a flexible positioner of work piece, because the pin can carry out the position adjustment of small amplitude automatically when contacting with the work piece for interval between two pins remains throughout equal with the size of work piece, therefore the embodiment of the utility model provides a flexible positioner of work piece, it passes through the pin of buffer gear setting on the sliding plate, can not need strict be in on the same straight line, and two rows of pins also can not need completely parallel, has increased the fault-tolerant rate of installation, has greatly made things convenient for the installation of pin.

Although terms such as base plate, slide plate, stepper motor, timing belt, timing pulley, stop lever, buffer ring, buffer mechanism, base, buffer slide rail, buffer slide block, buffer tension spring, buffer block, photoelectric sensor, detection baffle, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (7)

1. A flexible positioning device for workpieces comprises a base plate (10), two sliding plates (20) arranged on the base plate (10) in a sliding mode and a driving mechanism used for driving the two sliding plates (20) to move relatively; a plurality of stop rods (40) are respectively arranged on the two sliding plates (20); the method is characterized in that: at least one sliding plate (20) is also provided with a buffer mechanism (50), and the stop lever (40) on the sliding plate (20) is arranged on the sliding plate (20) through the buffer mechanism (50).

2. The apparatus for flexibly positioning a workpiece as set forth in claim 1, wherein: the buffer mechanism (50) comprises a base (51), a buffer slide rail (52), a buffer slide block (53) and a buffer tension spring (54); the stop lever (40) is fixedly arranged on the buffer sliding block (53); the buffering slide block (53) is arranged on the buffering slide rail (52) in a sliding manner; the buffer slide rail (52) is fixedly arranged on the sliding plate (20); the base (51) is fixedly arranged on the sliding plate (20); one end of the buffering tension spring (54) is connected with the base (51), and the other end of the buffering tension spring (54) is connected with the buffering slide block (53).

3. The apparatus for flexibly positioning a workpiece as set forth in claim 2, wherein: the buffer mechanism (50) further comprises a buffer block (55); the buffer block (55) is arranged between the buffer sliding block (53) and the base (51).

4. The apparatus for flexibly positioning a workpiece as set forth in claim 2, wherein: a position detection mechanism is arranged on at least one buffer mechanism (50); the position detection mechanism comprises a photoelectric sensor (61) arranged on the sliding plate (20) and a detection baffle plate (62) arranged on the buffering slide block (53).

5. The apparatus for flexibly positioning a workpiece as set forth in claim 1, wherein: the driving mechanism comprises a stepping motor (31) and a synchronous belt module; the two sliding plates (20) are connected with a synchronous belt (32) in the synchronous belt module; the stepping motor (31) is used for driving the synchronous belt (32) to move, and the two sliding plates (20) are driven to move close to or away from each other.

6. The apparatus for flexibly positioning a workpiece as set forth in claim 1, wherein: the top of the stop lever (40) is provided with a buffer ring (41).

7. The apparatus for flexibly positioning a workpiece as set forth in claim 6, wherein: the buffer ring (41) is made of wear-resistant materials.

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