CN216063994U - Glue needle height detection device and glue dispensing equipment - Google Patents

Abstract

The utility model relates to the technical field of detection and calibration, in particular to a rubber needle height detection device and a dispensing device. The rubber needle height detection device comprises a support frame, a calibration plate, an elastic piece and an induction mechanism; the calibration plate is movably arranged on the support frame along the Z direction; the elastic piece is arranged between the support frame and the calibration plate; the induction mechanism is respectively connected with the support frame and the calibration plate and used for detecting the Z-direction position change of the rubber needle through the movement of the calibration plate relative to the support frame. The rubber needle height detection device can automatically determine the height change of the needle head through displacement monitoring through the detection device.

Description

Glue needle height detection device and glue dispensing equipment

Technical Field

The utility model relates to the technical field of detection and calibration, in particular to a rubber needle height detection device and a dispensing device.

Background

The height of the existing glue dispensing mechanism is changed after the glue needle is replaced, and the height is determined manually through a calibration plate, so that the accuracy of the position for continuously dispensing glue is ensured.

However, manual calibration is subject to human and equipment errors and is time consuming.

SUMMERY OF THE UTILITY MODEL

The object of the present invention consists, for example, in providing a glue needle height detection device and a glue dispensing apparatus which enable the needle height to be determined automatically by displacement monitoring by means of the detection device.

Embodiments of the utility model may be implemented as follows:

in a first aspect, the present invention provides a glue needle height detection device for detecting a Z-position change of a glue needle, including:

the device comprises a support frame, a calibration plate, an elastic piece and an induction mechanism;

the calibration plate is movably arranged on the support frame along the Z-direction; the elastic piece is arranged between the supporting frame and the calibration plate;

the induction mechanism is respectively connected with the support frame and the calibration plate and used for detecting the Z-direction position change of the rubber needle through the movement of the calibration plate relative to the support frame.

The inductor of the rubber needle height detection device of the scheme is adjusted to stop when the micro-motion can trigger a signal, so that the needle head moves downwards along the Z direction from the top until the needle head contacts the calibration plate, and at the moment, the calibration plate generates displacement downwards and triggers the induction mechanism due to the fact that the calibration plate receives the downward pressure of the needle head on the needle head. The signal is fed back to the computer at the moment, and when the computer records the trigger signal, the Z-position reading of the needle head is carried out. After the trigger signal, the needle stops moving downward and returns to the safe height, at which point the entire needle height detection process is completed. The height detection device for the rubber pins obtains the height of the rubber pins by referring to a preset conversion program after obtaining the displacement of the calibration plate, and thus, the device has the characteristics of automation and high precision.

On the other hand, compared with the prior art that the whole mechanism is balanced by adjusting the elastic force of the elastic piece, the mechanism is freely placed to achieve a balanced state, and then the position of the sensor is finely adjusted to find the critical position. So control the convenience, be favorable to extensive and long-time detection, and stability and controllability are better.

In an alternative embodiment, the sensing mechanism comprises a sensor and a sensing tab;

the inductor is arranged on the support frame, and the induction sheet is arranged on the calibration plate;

the induction sheet is matched with the inductor, and when the induction sheet is triggered by micro motion, the inductor outputs signals.

In an optional embodiment, the glue needle height detection device further comprises a connecting block arranged on the support frame;

along Z direction, inductor dismantles and sets up on the connecting block.

In an optional embodiment, the glue needle height detection device further comprises an adjusting piece;

the inductor is clamped on the connecting block; the adjusting piece is arranged on the connecting block to push the inductor to move along the Z direction.

In an optional embodiment, one end of the adjusting piece is movably arranged on the inductor, and the adjusting piece and the end surface of the inductor keep a preset distance;

the other end of the adjusting piece is in threaded connection with the connecting block, so that the inductor moves along the Z direction relative to the connecting block.

In an optional embodiment, the glue needle height detection device further comprises a mounting block and a locking part;

the inductor is arranged on the mounting block;

along the Z-direction, the mounting block is clamped on the side edge of the connecting block;

the locking part is provided on the mounting block to clamp the mounting block with the connection block.

In an optional embodiment, the glue needle height detection device further comprises a first guide pillar; a first guide hole is formed in the support frame in a penetrating mode;

one end of the first guide pillar is fixedly arranged on the calibration plate, and the other end of the first guide pillar penetrates through the first guide hole of the support frame;

the elastic piece is sleeved on the first guide column and is positioned between the calibration plate and the support frame.

In an optional embodiment, the glue needle height detection device further comprises a second guide pillar; a second guide hole is formed in the support frame in a penetrating mode;

the second guide posts are respectively arranged on two sides of the calibration plate, one end of each second guide post is fixedly arranged on the calibration plate, and the other end of each second guide post movably penetrates through the second guide hole of the support frame.

In a second aspect, the present invention provides a dispensing apparatus, including the glue pin height detecting device of any one of the foregoing embodiments.

The beneficial effects of the embodiment of the utility model include, for example:

the rubber needle height detection device comprises a support frame, a calibration plate, an elastic piece and a sensing mechanism. It has the inductor that the fine motion stops when can triggering signal, through the syringe needle along Z to from last down moving until syringe needle contact calibration board, at this moment the calibration board owing to receive the probe to its effect down force, calibration board produces the displacement downwards and triggers the inductor and obtains the Z of syringe needle to the position reading, further obtains the height of gluing the needle. The measuring mode has the characteristics of simple structure, high precision, automatic operation, time saving and labor saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of a glue needle height detection device according to an embodiment of the present invention;

FIG. 2 is a front view of the glue pin height detection apparatus according to the embodiment of the present invention;

FIG. 3 is a side view of a glue pin height detection device according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of another viewing angle of the glue needle height detecting device according to the embodiment of the present invention.

Icon: 10-a glue needle height detection device; 100-a support frame; 110-supporting feet; 120-a support plate; 200-calibration plate; 300-an elastic member; 400-an inductor; 500-induction sheet; 610-connecting block; 620-an adjustment member; 710-a mounting block; 720-a locking portion; 810-a first guide pillar; 811-a first via; 820-a second guide pillar; 821-a second via; 20-glue needle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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 invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The glue dispensing process is more and more widely used in the production process of products, but the needle head has the defect of easy bending and easy blockage, so that the needle head replacement cannot be avoided in the production process, and the height of the replaced needle head is inconsistent with that of the previous needle head due to the tolerance of the glue needle or the artificial reason, so that the height of the needle head needs to be confirmed by a calibration plate manually after the needle head is replaced every time.

However, manual calibration is subject to human and equipment errors and is time consuming.

In order to improve the above technical problem, in the following embodiments, a glue needle height detecting device and a glue dispensing apparatus are provided.

Referring to fig. 1, the present embodiment provides a glue pin height detecting device 10 for detecting a Z-position change of a glue pin 20, including a supporting frame 100, a calibration plate 200, an elastic member 300 and a sensing mechanism.

Along the Z direction, the calibration plate 200 is movably arranged on the support frame 100;

along the Z direction, the calibration plate 200 is movably arranged on the support frame 100; the elastic member 300 is disposed between the supporting bracket 100 and the calibration plate 200;

the sensing mechanism is respectively connected with the support frame 100 and the calibration plate 200, and is used for detecting the Z-position change of the rubber needle 20 through the movement of the calibration plate 200 relative to the support frame 100.

The sensing mechanism of the glue pin height detecting device 10 is adjusted to be micro-motion, i.e. stops when the signal is triggered, so that when the needle moves from top to bottom along the Z direction until the needle contacts the calibration plate 200, at this time, the calibration plate 200 is displaced downwards and triggers the sensor 400 due to the downward pressure of the needle on the calibration plate 200.

The signal is fed back to the computer at the moment, and when the computer records the trigger signal, the Z-position reading of the needle head is carried out. After the trigger signal, the needle stops moving downward and returns to the safe height, at which point the entire needle height detection process is completed. The height detection device 10 for the glue pin obtains the height of the glue pin 20 by referring to a preset conversion program after obtaining the displacement of the calibration plate 200, and thus has the characteristics of automation and high accuracy.

On the other hand, compared to the prior art that the whole mechanism is balanced by adjusting the elastic force of the elastic member 300, the present invention chooses to freely place the mechanism to achieve the balanced state, and then fine-tune the position of the sensor 400 to find the critical position. So control the convenience, be favorable to extensive and long-time detection, and stability and controllability are better.

Please refer to fig. 1 to 4 for further details of the structure of the glue pin height detecting device 10.

As can be seen in fig. 1, the support stand 100 includes a support plate 120 and two support feet 110. The supporting legs 110 are respectively disposed at both sides of the supporting plate 120. And support legs 110 are provided on support plate 120 to extend in the Z-direction.

Optionally, the support legs 110 and the support plate 120 are perpendicular to each other.

Further, as can be seen from fig. 1, the sensing mechanism includes a sensor 400 and a sensing piece 500; the inductor 400 is arranged on the supporting frame 100, and the induction sheet 500 is arranged on the calibration plate 200; the sensor strip 500 is matched with the sensor 400, and when the sensor strip 500 slightly moves, the sensor 400 is triggered to output a signal.

Optionally, the sensor 400 is a photoelectric sensor 400, and the sensing strip 500 is a photoelectric sensing strip 500. The photoelectric sensing mechanism has the characteristics of obvious detection effect and high reliability.

As can also be seen in fig. 1 and 2, the glue pin height detecting device 10 further includes a first guide pillar 810; a first guide hole 811 is formed through the support frame 100; one end of the first guide pillar 810 is fixedly arranged on the calibration plate 200, and the other end of the first guide pillar 810 penetrates through the first guide hole 811 of the support frame 100; the elastic member 300 is sleeved on the first guide post 810, and the elastic member 300 is located between the calibration plate 200 and the supporting frame 100.

The elastic member 300 herein provides an elastic force to balance the resultant force of the gravity of the calibration plate 200 and/or the pressure of the needle head of the glue needle 20.

Optionally, the elastic member 300 is a compression spring. Specifically, the coefficient K of the spring is 0.05N/mm, so that the needle is ensured to be only subjected to a small acting force in the process of pressing down the needle, and the needle cannot deform. Therefore, the final detection precision can reach 0.02 mm.

As can also be seen from the figure, the glue needle height detection device 10 further comprises a second guide post 820; a second guide hole 821 is arranged on the support frame 100;

the second guide posts 820 are respectively disposed at two sides of the calibration plate 200, one end of the second guide post 820 is fixedly disposed on the calibration plate 200, and the other end of the second guide post 820 movably penetrates the second guide hole 821 of the supporting frame 100.

Optionally, in this embodiment, a linear bearing is disposed on a side of the supporting plate 120 away from the calibration plate 200, and the second guide post 820 is connected to the linear bearing to realize free movement along the Z direction.

The first guide post 810 and the second guide post 820 cooperate to allow the calibration plate 200 and the sensing piece 500 to be stably close to or far from the support plate 120 in a predetermined direction. And the first guide pillar 810 also serves as a support for the elastic member 300 to ensure that the elastic member 300 can stably and reliably output the elastic force.

With continuing reference to fig. 1 to 4, it can be seen that, in the present embodiment, the glue pin height detecting device 10 further includes a connecting block 610 disposed on the supporting frame 100; in the Z direction, the sensor 400 is detachably provided on the connection block 610.

Further, the connection block 610 includes a standing block extending in the Z direction, a bottom block horizontally laid on the support plate 120, and a top block parallel to the support plate 120. The vertical block is arranged between the bottom block and the top block, and the bottom block and the top block respectively extend to two sides of the vertical block. Wherein the inductor 400 is disposed on the stand block.

In this embodiment, the glue needle height detecting device 10 further includes a mounting block 710 and a locking portion 720; the inductor 400 is disposed on the mounting block 710; along the Z direction, the mounting block 710 is clamped on the side edge of the connecting block 610; a locking portion 720 is provided on the mounting block 710 to clamp the mounting block 710 with the connection block 610.

Further, the mounting block 710 has a locking groove, which is locked to the vertical block of the connection block 610. The locking portion 720 is a bolt, the bolt is threadedly coupled to the mounting block 710, and the end of the screw abuts against the surface of the connecting block 610 by rotating the bolt, thereby fixing the sensor 400 to the connecting block 610.

Specifically, as shown in fig. 1 and 4, the mounting block 710 further includes a sliding slot (not numbered) extending along the Z-direction; the slide slot engages the attachment block 610 such that the mounting block 710 is in sliding engagement with the attachment block 610. The sliding fit can facilitate smooth movement of the mounting block 710 and the connecting block 610, thereby facilitating smooth adjustment of the height of the inductor 400.

Further, as shown in fig. 3, the mounting block 710 includes a through-hole (not numbered) extending in the Z-direction; the locking part 720 can slide in the strip-shaped hole along the Z direction; and the locking part 720 is formed through a strip-shaped hole to clamp the mounting block 710 and the connection block 610.

Optionally, a matching groove is arranged on one side of the connecting block 610 close to the locking part 720; the locking portion 720 is formed with a strip-shaped hole and then connected to the fitting groove to lock the mounting block 710 and the connection block 610. The arrangement of the strip-shaped hole and the matching groove facilitates fine adjustment of the mounting block 710 along the Z direction, so that the adjustment of the inductor 400 is more precise and accurate.

As can be seen from the figure, the glue needle height detection device 10 further comprises an adjusting member 620; the inductor 400 is clamped on the connecting block 610; the adjusting member 620 is disposed on the connecting block 610 to push the sensor 400 to move in the Z direction.

Further, one end of the adjusting element 620 is movably disposed on the inductor 400, and a preset distance is maintained between the adjusting element 620 and the end surface of the inductor 400; the other end of the adjusting member 620 is threadedly coupled to the connection block 610 to move the sensor 400 in the Z-direction with respect to the connection block 610.

Optionally, the adjusting member 620 is an adjusting bolt, the adjusting bolt is in threaded connection with the top block of the connecting block 610, the end of the adjusting bolt is in horizontal rotation connection with the mounting block 710, and the inductor 400 on the mounting block 710 moves up and down along the Z direction by rotating the adjusting bolt.

It is understood that in other embodiments, the adjustment bolt may be held against only the top of the mounting block 710, which can only hold down against the mounting block 710 to move the inductor 400 down along Z. Movement of sensor 400 in the Z direction is accomplished by sliding mounting block 710.

In use, initially, the entire glue pin height detecting device 10 is in a balanced state, and the force F1 of the elastic member 300 acting on the calibration board 200 is equal to the gravity G of the calibration board 200. The calibration board 200 is connected to the second guide post 820, and the second guide post 820 passes through the linear bearing, so that the calibration board 200 can only move up and down along the Z direction, and the elastic force of the elastic member 300 applied to the calibration board 200 overcomes the self-weight and is balanced. The adjustment member 620 (in this example, an adjustment bolt) is used to adjust the photoelectric sensor 400 to move up and down, and the adjustment of the sensor 400 is stopped when a micro motion can trigger a signal, and at this time, the photoelectric sensor 400 is not triggered by the photoelectric sensing sheet 500.

Then the needle head of the glue needle 20 moves from top to bottom along the Z direction until the needle head contacts the calibration plate 200, and the calibration plate 200 drives the sensing piece 500 to displace downwards due to the downward pressure applied to the calibration plate 200 by the needle head, and the sensing piece 500 triggers the sensor 400. The force Fx of the spring on the calibration board 200 is equal to the sum of the force F2 of the needle on the calibration board 200 and the gravity G of the calibration board 200. At the moment, the signal is fed back to the computer, and when the computer records the trigger signal, the Z-position reading of the needle head is obtained. After the trigger signal, the needle stops moving downward and returns to the safe height, at which point the entire needle height detection process is completed.

In a second aspect, the present invention provides a dispensing apparatus, which includes the glue pin height detecting device 10 of any one of the foregoing embodiments. Such point glue equipment has the syringe needle height that can survey gluey needle 20 fast, and degree of automation is high, characteristics that work efficiency is high.

To sum up, the embodiment of the present invention provides a glue needle height detection device 10 and a glue dispensing apparatus, which at least have the following advantages:

1. compared with the conventional method for adjusting the height of the elastic element 300 to balance the whole mechanism, the method has the advantages that the whole device is freely placed to achieve a balance state, and then the position of the inductor 400 is finely adjusted to find a critical position.

2. Because the position of the inductor 400 can be adjusted, the range of the Z-axis motion can be shortened to be within 0.5mm when the height of the detection needle head can be greatly shortened. Simultaneously the syringe needle receives the biggest Z to power and is not more than 0.025N, because the syringe needle atress is less, this scheme is applicable to the syringe needle of perpendicular or slope installation and detects, avoids the syringe needle to produce deformation and influence the detection precision.

3. Simple structure, convenient maintenance, if after long-term use when the standard component wearing and tearing and influence detection accuracy, only need readjustment inductor 400 height can.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. The utility model provides a rubber needle height detection device for the Z position change of survey rubber needle, its characterized in that includes:

the device comprises a support frame (100), a calibration plate (200), an elastic piece (300) and a sensing mechanism;

along the Z-direction, the calibration plate (200) is movably arranged on the support frame (100); the elastic piece (300) is arranged between the support frame (100) and the calibration plate (200);

the induction mechanism is respectively connected with the support frame (100) and the calibration plate (200) and is used for detecting the Z-direction position change of the rubber needle through the movement of the calibration plate (200) relative to the support frame (100).

2. The glue needle height detection device of claim 1, comprising:

the sensing mechanism comprises a sensor (400) and a sensing piece (500);

the inductor (400) is arranged on the support frame (100), and the induction sheet (500) is arranged on the calibration plate (200);

the induction sheet (500) is matched with the inductor (400), and when the induction sheet (500) triggers the inductor (400) to output signals slightly.

3. The glue needle height detection device of claim 2, comprising:

the rubber pin height detection device also comprises a connecting block (610) arranged on the support frame (100);

in the Z direction, the inductor (400) is detachably arranged on the connecting block (610).

4. The glue needle height detection device of claim 3, wherein:

the rubber needle height detection device also comprises an adjusting piece (620);

the inductor (400) is clamped on the connecting block (610); the adjusting piece (620) is arranged on the connecting block (610) to push the inductor (400) to move along the Z direction.

5. The glue needle height detection device of claim 4, wherein:

one end of the adjusting piece (620) is movably arranged on the inductor (400), and a preset distance is kept between the adjusting piece (620) and the end face of the inductor (400);

the other end of the adjusting piece (620) is in threaded connection with the connecting block (610) so that the inductor (400) moves along the Z direction relative to the connecting block (610).

6. The glue needle height detection device of claim 3, wherein:

the glue needle height detection device also comprises a mounting block (710) and a locking part (720);

the inductor (400) is arranged on the mounting block (710);

along the Z-direction, the mounting block (710) is clamped on the side edge of the connecting block (610);

the locking part (720) is provided on the mounting block (710) to clamp the mounting block (710) with the connection block (610).

7. The glue needle height detection device of claim 1, wherein:

the glue needle height detection device also comprises a first guide column (810); a first guide hole (811) penetrating through the support frame (100) is formed in the support frame;

one end of the first guide post (810) is fixedly arranged on the calibration plate (200), and the other end of the first guide post (810) penetrates through the first guide hole (811) of the support frame (100);

the elastic piece (300) is sleeved on the first guide post (810), and the elastic piece (300) is located between the calibration plate (200) and the support frame (100).

8. The glue needle height detection device of claim 1, wherein:

the glue needle height detection device also comprises a second guide post (820); a second guide hole (821) is arranged on the support frame (100) in a penetrating way;

the second guide posts (820) are respectively arranged on two sides of the calibration plate (200), one end of each second guide post (820) is fixedly arranged on the calibration plate (200), and the other end of each second guide post (820) movably penetrates through the second guide hole (821) of the support frame (100).

9. The utility model provides a dispensing equipment which characterized in that:

the glue dispensing equipment comprises the glue pin height detection device of any one of claims 1-8.

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