CN217168269U

CN217168269U - Fine positioning mechanism

Info

Publication number: CN217168269U
Application number: CN202221552183.4U
Authority: CN
Inventors: 温杰; 李超强; 贾秀玉; 卫乐春; 王增泽; 王宪超
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-08-12
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a smart positioning mechanism belongs to frock clamp technical field, and cooperation frock subassembly uses, and the frock subassembly is equipped with a plurality of product location caves and frock bottom plate, and smart positioning mechanism's base plate is provided with the first clamping jaw mechanism and the second clamping jaw mechanism that target in place detection device, correspond every product location cave, and first clamping jaw mechanism and second clamping jaw mechanism drive through first power device and second power device respectively. When the in-place detection device detects that the tool bottom plate is flatly placed, the first clamping jaw mechanism and the second clamping jaw mechanism simultaneously act to clamp and position a product in the product positioning hole, and the direction of pushing the product by the first clamping jaw mechanism is perpendicular to the direction of pushing the product by the second clamping jaw mechanism. When the positioning and clamping are carried out, the first clamping claw arm and the second clamping claw arm completely clamp and position the product in the product positioning hole, so that no gap exists between the product and the inner walls of the first clamping claw arm, the second clamping claw arm and the product positioning hole, the positioning precision is high, the whole occupied space of the mechanism is small, and the cost is saved.

Description

Fine positioning mechanism

Technical Field

The utility model belongs to the technical field of frock clamp, concretely relates to carry out the smart positioning mechanism who fixes a position to small-size product.

Background

Many accessories with small size and high precision requirement exist in electronic products, and when the accessory products with small size and high precision requirement are further processed (such as gluing, welding and the like), the accessory products need to be accurately positioned.

In the prior art, when a certain small product (the size of the product is 4.25mm long, 2.98mm wide and 1.89mm high) is processed, the small product needs to be placed on a tool for positioning, a product positioning hole for positioning the product is formed in the tool, the positioning hole is designed according to the size of the product, the positioning hole is slightly larger than the size of the product, and the nominal size and the nominal difference value which are as small as possible are designed. In order to put the product into the positioning hole for subsequent gluing or welding operation, a gap exists between the product and the hole wall of the positioning hole, but in the gluing or welding operation process, the product is possibly driven during gluing or welding operation due to the gap between the product positioning hole and the product, and the product is also possibly inclined due to other factors, so that the yield of the product in the subsequent operation is low. In addition, the corresponding operation position of the manipulator needs to be aligned to the product during gluing or welding operation, and in order to ensure the positioning accuracy, a vision alignment system is usually used for correcting and aligning the product, so that the equipment cost is greatly increased, and meanwhile, the working efficiency of the equipment is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a smart positioning mechanism can eliminate the clearance between product and the product location cave during the location, improves positioning accuracy and location efficiency.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the fine positioning mechanism is used in cooperation with the tool assembly, the tool assembly is provided with a plurality of product positioning holes, and the tool assembly comprises a tool bottom plate and is characterized in that:

the precise positioning mechanism comprises a substrate, the substrate is provided with an in-place detection device, a first clamping jaw mechanism and a second clamping jaw mechanism, the first clamping jaw mechanism corresponds to each product positioning hole, the first clamping jaw mechanism is driven by a first power device, and the second clamping jaw mechanism is driven by a second power device;

when the in-place detection device detects that the tool bottom plate is flatly placed, the first clamping jaw mechanism and the second clamping jaw mechanism simultaneously act to clamp and position a product in the product positioning hole, and the direction in which the first clamping jaw mechanism pushes the product is perpendicular to the direction in which the second clamping jaw mechanism pushes the product.

Preferentially, first gripper mechanism includes first gripper arm, first hinge, first catch arm and the first elastic component that resets, first gripper arm passes through first hinge rotate install in the base plate, a power device drive first catch arm promotes first gripper arm winds first hinge rotates, the first elastic component that resets set up in first gripper arm with be used for between the base plate first gripper arm resets.

Preferably, the first pushing arms of the plurality of first gripper mechanisms are connected to the first power device through first connecting pieces.

Preferentially, the second clamping jaw mechanism comprises a second clamping jaw arm, a second hinge shaft, a second pushing arm and a second resetting elastic piece, the second clamping jaw arm is installed on the base plate in a rotating mode through the second hinge shaft, the second power device drives the second pushing arm to push the second clamping jaw arm to wind the second hinge shaft to rotate, and the second resetting elastic piece is arranged between the second clamping jaw arm and the base plate and used for resetting the second clamping jaw arm.

Preferably, each of the second power devices is connected with two of the second pushing arms through a second connecting piece.

Preferably, the in-place detection device is a gas detection device, the gas detection device includes an air passage formed on the substrate, and a first air suction port of the air passage is formed on a top plane of the substrate.

Preferably, the in-place detection device is an optical fiber sensor.

Preferentially, a first avoidance hole for avoiding the first clamping jaw arm is formed in the substrate, and the top of the first clamping jaw arm penetrates through the substrate and extends into the product positioning hole of the tool assembly.

Preferentially, a second avoiding hole for avoiding the second clamping jaw arm is formed in the substrate, and the top of the second clamping jaw arm penetrates through the substrate and extends into the product positioning hole of the tool assembly.

Preferentially, the tooling bottom plate and the base plate are provided with mutually adaptive positioning pieces.

Since the technical scheme is used, the beneficial effects of the utility model are that:

the utility model discloses a smart positioning mechanism is used for using with the cooperation of frock subassembly, and the frock subassembly is equipped with a plurality of product location caves and frock bottom plate, and smart positioning mechanism's base plate is provided with the first clamping jaw mechanism and the second clamping jaw mechanism that target in place detection device, correspond every product location cave, and first clamping jaw mechanism passes through the drive of first power device, and second clamping jaw mechanism passes through the drive of second power device. When the in-place detection device detects that the tool bottom plate is flatly placed, the first clamping jaw mechanism and the second clamping jaw mechanism simultaneously act to clamp and position a product in the product positioning hole, and the direction of pushing the product by the first clamping jaw mechanism is perpendicular to the direction of pushing the product by the second clamping jaw mechanism.

Under the combined action of the first clamping jaw mechanism, the second clamping jaw mechanism and the in-place detection device, the first clamping jaw arm and the second clamping jaw arm can completely clamp and position the product in the product positioning hole, so that no gap exists between the product and the inner walls of the product positioning hole, the positioning precision is high, the whole occupied space of the mechanism is small, the structure is simple, the visual alignment system can be replaced, and the cost is saved.

Drawings

Fig. 1 is a schematic structural view of the fine positioning mechanism of the present invention;

FIG. 2 is a first schematic exploded view of FIG. 1;

FIG. 3 is a second schematic exploded view of FIG. 1;

FIG. 4 is a schematic view of the first and second jaw mechanisms of FIG. 1;

FIG. 5 is a first schematic cross-sectional view (taken parallel to the long sides) of the fine positioning mechanism of FIG. 1;

FIG. 6 is a second schematic cross-sectional view (taken in a direction parallel to the short side) of the fine positioning mechanism of FIG. 1;

FIG. 7 is a schematic view of the first gripper arm of FIG. 1;

FIG. 8 is a schematic view of the second jaw arm of FIG. 1;

the method comprises the following steps of 1, a tool assembly; 101. positioning the product at the acupuncture points; 102. a tooling bottom plate; 1021. positioning holes; 2. a substrate; 201. a first avoidance hole; 202. a second avoidance hole; 203. positioning pins; 3. an in-place detection device; 301. a first inhalation port of the airway; 302. a second air suction port of the air passage; 4. a first jaw mechanism; 401. a first jaw arm; 4011. a lower vertical column; 4012. connecting columns; 4013. an upper vertical column; 4014. a first hinge hole; 402. a first hinge shaft; 403. a first push arm; 404. a first return spring; 405. a first connecting member; 5. a second jaw mechanism; 501. a second jaw arm; 5011. a main upright post; 5012. a first cross-post; 5013. a second cross-post; 5014. a second hinge hole; 5015. a chuck block; 502. a second hinge shaft; 503. a second push arm; 504. a second return spring; 505. a second connecting member; 6. a first power unit; 7. and a second power device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The first embodiment is as follows:

the specification of a processed product is as follows: a product having a substantially rectangular parallelepiped shape with a length of 4.25mm, a width of 2.98mm and a height of 1.89mm will be described as an example.

The fine positioning mechanism is commonly shown in fig. 1 to 3 and used in cooperation with a tool assembly 1, in the embodiment, the tool assembly 1 is provided with eight product positioning holes 101, the tool assembly 1 comprises a tool bottom plate 102, a detachable product supporting plate is arranged on the tool bottom plate 102, a product containing hole is formed in the product supporting plate, the structure of the product supporting plate can be designed according to the shape of the product, a product containing hole is formed in the tool bottom plate 102, and the product containing hole in the product supporting plate and the product containing hole in the tool bottom plate 102 are overlapped to jointly form the product positioning holes 101. The structure of the tool assembly is not limited to the above structure, and may be changed according to the structure of the product.

The fine positioning mechanism comprises a substrate 2, the substrate 2 is provided with an in-place detection device 3, a first clamping jaw mechanism 4 and a second clamping jaw mechanism 5, the first clamping jaw mechanism 4 corresponds to each product positioning cavity 101, the first clamping jaw mechanism 4 is driven by a first power device 6, and the second clamping jaw mechanism 5 is driven by a second power device 7;

the first power device 6 preferably adopts a small sliding table air cylinder, and the second power device 7 preferably adopts an air cylinder.

When the in-place detection device 3 detects that the tooling bottom plate 102 is laid flat, the first clamping jaw mechanism 4 and the second clamping jaw mechanism 5 simultaneously act to clamp and position a product in the product positioning cavity 101, and the direction in which the first clamping jaw mechanism 4 pushes the product is perpendicular to the direction in which the second clamping jaw mechanism 5 pushes the product.

As shown in fig. 4 and 5, the first jaw mechanism 4 includes a first jaw arm 401, a first hinge shaft 402, a first push arm 403, and a first return elastic member 404, the first jaw arm 401 is rotatably mounted on the substrate 2 via the first hinge shaft 402, the first power device 6 drives the first push arm 403 to push the first jaw arm 401 to rotate around the first hinge shaft 402, and the first return elastic member 404 is disposed between the first jaw arm 401 and the substrate 2 for returning the first jaw arm 401. The first return spring 404 is generally configured as a spring.

In this embodiment, the fine positioning mechanism is provided with eight first clamping jaw mechanisms 4 corresponding to the eight product positioning cavities 101 of the tooling assembly, and each first pushing arm 403 of the eight first clamping jaw mechanisms 4 is connected with the first power device 6 through the first connecting piece 405.

As shown in fig. 4, eight first push arms 403 are provided integrally with the first link 405 in this embodiment. The small-sized sliding table cylinder pushes the first pushing arm 403 to move along the direction a, and then the first pushing arm 403 pushes the bottom end of the first claw arm 401.

As shown in fig. 7, the first jaw arm 401 includes a lower vertical column 4011, an upper vertical column 4013, and a connecting column 4012 connecting the lower vertical column 4011 and the upper vertical column 4013, a first hinge hole 4014 adapted to the first hinge shaft 402 is formed at a position of the lower vertical column 4011 near the lower end, and the lower portion of the connection between the upper vertical column 4013 and the connecting column 4012 presses the first return elastic member 404. When the first push arm 403 pushes the bottom end of the lower vertical post, the first jaw arm 401 rotates about the first hinge shaft 402, the top end of the upper vertical post 4013 moves in a direction of clamping the product, and the first return elastic member 404 is compressed. Under the action of the first return elastic member 404, the first jaw arm 401 is returned, and at this time, the first jaw mechanism 4 is in a relaxed state.

As shown in fig. 4, 6 and 8, the second gripper mechanism 5 includes a second gripper arm 501, a second hinge shaft 502, a second pushing arm 503 and a second return elastic member 504, the second gripper arm 501 is rotatably mounted on the base plate 2 through the second hinge shaft 502, the second power device 7 drives the second pushing arm 503 to push the second gripper arm 501 to rotate around the second hinge shaft 502, and the second return elastic member 504 is disposed between the second gripper arm 501 and the base plate 2 for returning the second gripper arm 501. The second return elastic member 504 is provided as a spring.

As shown in fig. 8, the second jaw arm 501 includes a main post 5011, a first cross post 5012 and a second cross post 5013, the first cross post 5012 being adjacent to a lower end of the main post 5011, the second cross post 5013 being adjacent to an upper end of the main post 5011, the first cross post 5012 and the second cross post 5013 extending out of the main post in opposite directions. An upwardly projecting clip block 5015 is secured to the end of the second cross post 5013 remote from the main post 5011. A second hinge hole 5014 matched with the second hinge shaft 502 is formed at the joint of the main upright 5011 and the first transverse column 5012, the lower portion of one end, away from the main upright 5011, of the first transverse column 5012 presses the second return elastic piece 504, when the second push arm 503 pushes the bottom end of the main upright 5011, the second jaw arm 501 rotates around the second hinge shaft 502, the jaw 5015 moves towards the direction of clamping a product, and the second return elastic piece 504 is compressed by the first transverse column 5012. Under the action of the second return spring 504, the second jaw arm 501 is returned, and at this time, the second jaw mechanism 5 is in a relaxed state.

Each of the second power units 7 is connected with two of the second pushing arms 503 through a second connecting member 505. Corresponding to the eight product positioning cavities 101 of the tooling assembly, in the present embodiment, four air cylinders are provided, and each air cylinder is connected to two second pushing arms 503 through a second connecting member 505. Wherein a single second connector 505 for each cylinder connection is provided integrally with the corresponding two second pusher arms 503.

The in-place detection device 3 is an air detection device, the air detection device comprises an air passage arranged on the substrate 2, and a first air suction port 301 of the air passage is arranged on the top plane of the substrate 2. The second suction port 302 of the air passage is provided on one side of the substrate 2, and the external air pump is connected to the second suction port 302 of the air passage through a vent pipe to draw air from the air passage.

When the tool bottom plate 102 is placed horizontally, the tool bottom plate 102 blocks the first air suction port 301 of the air passage on the top plane of the substrate 2, and the value of the pressure gauge is large (the value of the pressure gauge is generally displayed as about 70). If the tool bottom plate 102 is not leveled, i.e. there is a gap between the tool bottom plate 102 and the substrate, the value of the pressure gauge is small (generally, the value of the pressure gauge is shown as about 20). The workshop production line has multiple uncontrollable factors in the tool circulation process to influence the tool not to be placed in place, if the tool is not detected in place, the first clamping jaw mechanism 4 and the second clamping jaw mechanism 5 can be easily damaged, and the finished product rate of products is low.

Offer on the base plate 2 and dodge first dodging hole 201 of first gripper arm 401, first gripper arm 401 top is passed base plate 2 and is stretched into frock subassembly 1's product location cave 101.

The base plate 2 is provided with a second avoidance hole 202 for avoiding the second clamping jaw arm 501, and the top of the second clamping jaw arm 501 penetrates through the base plate 2 and extends into the product positioning hole 101 of the tooling assembly 1.

In the present embodiment, the substrate 2 has a rectangular parallelepiped shape, and the longitudinal direction of the first avoiding hole 201 in the substrate 2 extends parallel to the longitudinal direction of the substrate 2. The length direction of the second avoiding hole 202 in the substrate 2 extends in parallel with the width direction of the substrate 2.

Positioning pieces which are mutually matched are arranged between the tool bottom plate 102 and the substrate 2. In this embodiment, the tool base plate 102 is provided with a positioning hole 1021, and the substrate 2 is provided with a positioning pin 203 adapted to the positioning hole 1021.

The utility model discloses mainly carry out the precision compensation location to the product through smart positioning mechanism, under first clamping jaw mechanism 4 and second clamping jaw mechanism 5 and the combined action that targets in place detection device, first clamping jaw arm and second clamping jaw arm can press from both sides the tight location of product complete clamp in product location cave for seamless, positioning accuracy is high between product and first clamping jaw arm and second clamping jaw arm and the product location cave inner wall.

The utility model discloses smart positioning mechanism's theory of operation as follows:

the tooling flows to the position needing to be positioned, the air cylinder is lifted to lift the tooling assembly and place the tooling assembly on the substrate 2 of the fine positioning mechanism, the positioning pin 203 on the substrate is matched with the positioning hole 1021 on the tooling bottom plate 102 to position the tooling, and the in-place detection device 3 detects whether the tooling is placed in place. If the tool is detected to be put in place, the first power device 6 drives the first clamping jaw mechanism 4 to push and clamp the long side of the product, and the second power device 7 drives the second clamping jaw mechanism 5 to push and clamp the short side of the product. The positioning precision of the product is improved. And after clamping and positioning, performing high-precision operation such as gluing and welding on the product.

When the product needs to be released, the first power device 6 returns, and the first jaw arm 401 is reset under the action of the first reset elastic piece 404. Meanwhile, the second power unit 7 returns to the original position, and the second jaw arm 501 returns to the original position by the second return elastic member 504.

Because the manipulator that carries out operations such as rubber coating, welding to the product is on the station, has all been occupied most space by corresponding cylinder and pipeline and other accessories to mechanism such as rubber coating of manipulator upper portion, welding perpendicular bottom direction linear motion, the department space is limited on this station, when selecting the detection frock that targets in place, must consider the occupation space problem. For detection by a photoelectric switch or a displacement sensor, the space is not allowed, and the detection accuracy is not high. The in-place detection device adopts a gas detection device, and has the advantages of simple structure, small occupied space, accurate detection and simple operation.

Example two:

the in-position detecting device 3 is provided as an optical fiber sensor. The optical fiber sensors are arranged on two opposite sides of the substrate, if light can pass through the space between the tool bottom plate 102 and the substrate 2, the tool assembly is not placed in place, and if the light does not penetrate through the space, the tool assembly is already placed in place.

The effect of the gas detection adopted by the in-place detection device 3 is better than that of the optical fiber sensor in terms of the combination of the measurement accuracy and the measurement cost.

The utility model discloses fine positioning mechanism is under first clamping jaw mechanism 4 and second clamping jaw mechanism 5 and the combined action of detection device that targets in place, and first clamping jaw arm and second clamping jaw arm can press from both sides the tight location of product complete clamp in product location cave for seamless between product and first clamping jaw arm and second clamping jaw arm and the product location cave inner wall, positioning accuracy is high, and the whole occupation space of this mechanism is little, and the structure is retrencied, has saved the cost. The visual alignment system can be replaced, the space and the cost are saved, and the equipment efficiency is improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The fine positioning mechanism is used in cooperation with the tool assembly, the tool assembly is provided with a plurality of product positioning holes, and the tool assembly comprises a tool bottom plate and is characterized in that:

2. The fine positioning mechanism of claim 1, wherein: first clamping jaw mechanism includes first clamping jaw arm, first hinge, first catch arm and the first elastic component that resets, first clamping jaw arm passes through first hinge rotate install in the base plate, a power device drive first catch arm promotes first clamping jaw arm winds first hinge rotates, first elastic component that resets set up in first clamping jaw arm with be used for between the base plate first clamping jaw arm resets.

3. The fine positioning mechanism of claim 2, wherein: the first pushing arms of the first clamping jaw mechanisms are connected with the first power device through first connecting pieces.

4. The fine positioning mechanism of claim 1, wherein: the second clamping jaw mechanism comprises a second clamping jaw arm, a second hinge shaft, a second pushing arm and a second resetting elastic piece, the second clamping jaw arm passes through the second hinge shaft and rotates and install in the base plate, the second power device drives the second pushing arm to push the second clamping jaw arm to wind the second hinge shaft rotates, and the second resetting elastic piece is arranged between the second clamping jaw arm and the base plate and used for resetting the second clamping jaw arm.

5. The fine positioning mechanism of claim 4, wherein: each second power device is connected with two second pushing arms through second connecting pieces.

6. The fine positioning mechanism according to any one of claims 1 to 5, characterized in that: the in-place detection device is set as an air detection device, the air detection device comprises an air passage arranged on the substrate, and a first air suction port of the air passage is arranged on the top plane of the substrate.

7. The fine positioning mechanism according to any one of claims 1 to 5, characterized in that: the in-place detection device is arranged as an optical fiber sensor.

8. The fine positioning mechanism of claim 2, wherein: set up on the base plate and dodge the first hole of dodging of first gripper arm, first gripper arm top is passed the base plate and is stretched into the product location cave of frock subassembly.

9. The fine positioning mechanism of claim 4, wherein: the base plate is provided with a second avoidance hole for avoiding the second clamping jaw arm, and the top of the second clamping jaw arm penetrates through the base plate and extends into the product positioning hole of the tool assembly.

10. The fine positioning mechanism of claim 1, wherein: the tool bottom plate and the base plate are provided with mutually matched positioning pieces.