CN210058809U

CN210058809U - High-precision glue dispensing needle head aligning device

Info

Publication number: CN210058809U
Application number: CN201920624994.2U
Authority: CN
Inventors: 胡吉峰; 罗建强; 唐文志; 龙琼
Original assignee: Shenzhen Hismart Industrial Robot Co Ltd
Current assignee: Shenzhen Hismart Industrial Robot Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-14
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a syringe needle aligning device is glued to high accuracy point, include: the contact type displacement sensor is positioned on one side below the dispensing needle head and used for detecting the Z value of the dispensing needle head; the coaxial light source is installed on the light source mounting plate and is located under the dispensing needle head, and the CCD camera is installed on the camera mounting plate and is located under the coaxial light source and coaxial with the coaxial light source. The alignment device of the utility model calculates the circle center position of the needle head by taking a picture of the CCD, and has very high precision; the position in the z-axis direction can be accurately measured through the high-precision contact type displacement sensor; meanwhile, the whole device is compact in structure, and can realize X, Y and Z three-axis precision measurement alignment.

Description

High-precision glue dispensing needle head aligning device

Technical Field

The utility model relates to a rubber coating equipment technical field, concretely relates to syringe needle aligning device is glued to high accuracy point.

Background

With the development of Chinese economy and the improvement of living standard, the mobile phone becomes an indispensable electronic product in daily life and plays an important role in national economy production and people's life. The mobile phone industry in China is in an accelerated development situation.

As a core part of a mobile phone, namely a mobile phone touch display screen (LCM), in the actual consumption field, for reasons of attractiveness, convenience in operation and the like, the requirement of a consumer on the screen occupation ratio of the touch display screen is higher and higher, and a smart phone manufacturer hides a front sensor and only leaves a round hole of a camera shooting port in order to obtain a larger screen display occupation ratio when designing the display screen. In order to realize the design purpose of the circular hole screen, the problem of light leakage at the circular hole is firstly blocked. Therefore, the edges of the round holes on the round hole screen are plugged by dispensing the round holes, and the firmness of backlight attachment is enhanced. Because the round hole of the round hole display screen is small, the glue receiving area is small, and glue dispensing can not be finished in a manual mode. A dispensing device is further needed to dispense the circular holes on the backlight of the circular hole display screen.

The existing dispenser generally uses a needle barrel type hot melt adhesive, and after a dispensing needle head is replaced on the dispenser, the position of a needle nozzle can be changed, so that the dispensing needle head needs to be corrected and aligned again. Aiming at the problems, the invention provides a high-precision glue dispensing needle head aligning device

Meanwhile, the common alignment mode in the market at present is manually operated to align, and the needle position is checked by eyes and compensated. The other is alignment detection through optical fiber detection. In order to improve the alignment efficiency and the alignment precision, the invention adopts CCD photographing and contact type displacement sensor

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For overcoming prior art's defect, an object of the utility model is to provide a syringe needle aligning device is glued to high accuracy point to realize that high efficiency counterpoints the gluey syringe needle and counterpoint.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a high-precision glue dispensing needle aligning device, which comprises a contact displacement sensor, a positioning device and a control device, wherein the contact displacement sensor is positioned on one side below a glue dispensing needle and is used for detecting the Z value of the glue dispensing needle; the coaxial light source is installed on the light source mounting plate and is located under the dispensing needle head, and the CCD camera is installed on the camera mounting plate and is located under the coaxial light source and coaxial with the coaxial light source.

Furthermore, the high-precision dispensing needle aligning device further comprises a camera fine-tuning sliding table connected with the dispenser frame and used for fixing the camera mounting plate.

Furthermore, syringe needle aligning device is glued to high accuracy point still includes triaxial cylinder, dust guard, the dust guard is in coaxial light source top level setting, and with the jar pole of triaxial cylinder is connected.

Further, a zoom lens is mounted at the front end of the CCD camera.

Compared with the prior art, the beneficial effects of the utility model are that:

the alignment device of the utility model calculates the circle center position of the needle head by taking a picture of the CCD, and has very high precision; the position in the Z-axis direction can be accurately measured through the high-precision contact type displacement sensor; meanwhile, the whole device is compact in structure, and can realize X, Y and Z three-axis precision measurement alignment.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a high-precision dispensing needle alignment device of the present invention;

fig. 2 is a schematic structural diagram of a high-precision dispensing needle alignment device of the present invention;

fig. 3 is a schematic top view of the high-precision dispensing needle alignment device of the present invention;

FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 2; and

fig. 5 is a partially enlarged structural view at B in fig. 4.

In the figure: 71. dispensing valve X axis; 78. dispensing a Z-axis glue valve; 89. dispensing a glue valve; 114. dispensing a needle head; 143. a CCD camera; 144. a coaxial light source; 148. finely adjusting the sliding table by the camera; 172. a zoom lens; 174. a contact displacement sensor; 175. a camera mounting plate; 179. a three-axis cylinder; 181. a dust-proof plate; 182. a light source mounting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

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

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

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Fig. 1-5 illustrate some embodiments according to the present invention.

The utility model provides a point gum machine with syringe needle aligning device is glued to high accuracy point, includes dispensing valve 89, the dispensing valve X axle 71 and the dispensing valve Z axle 78 that are connected with the dispensing valve and aligning device, its structure of aligning device mainly includes: CCD part, guard shield and installation main part, wherein, the CCD part mainly includes: CCD camera 143, zoom lens 172, coaxial light source 144, camera fine adjustment sliding table 148, camera mounting plate 175, light source mounting plate 182. The shield and the mounting body mainly include: dust guard 181, triaxial cylinder 179, contact displacement sensor 174.

Specifically, the dust guard 181, the coaxial light source 144, the zoom lens 172, and the CCD camera 143 are sequentially disposed from top to bottom below the dispensing needle 114, wherein the coaxial light source 144 is connected to the frame through the light source mounting plate 182, the CCD camera 143 is mounted on the camera mounting plate 175, and the camera mounting plate 175 is connected to the frame through the camera fine adjustment sliding table 148.

Specifically, the dust guard 181 is installed at the end of the triaxial cylinder 179 and covers the top of the coaxial light source 144, and the dust guard can be opened and closed by the forward and backward movement of the triaxial cylinder 179, so as to prevent dust and foreign matter from directly falling into the interior and damaging the components.

Further, the coaxial light source 144, the zoom lens 172 and the CCD camera 143 are all installed on the same vertical line. A contact displacement sensor 174 is mounted to the side of the coaxial light source 144.

The utility model discloses an aligning device's theory of operation and working process as follows:

and calculating the current Z value through the displacement value fed back to the PLC by the contact displacement sensor 174. The PLC obtains X, Y two coordinate points of the needle head in the physical space through the numerical value of the center point of the needle head calculated by the software after the CCD camera 143 takes a picture.

By adopting a PLC plus software control mode, the dispensing valve X shaft 71 drives the dispensing valve Z shaft 78 to move to the upper part of the contact type displacement sensor 174. The dispensing valve Z-axis 78 is first lowered to a point close to the contact displacement sensor 174 and the moving speed is then lowered to a point slow, and when the dispensing valve Z-axis is touched to the upper contact displacement sensor 174 and pressed down a little distance, the contact displacement sensor 174 feeds back a value. And the PLC records the current Z value and obtains the Z axis value of the current dispensing needle head through calculation. And after the Z-axis value is obtained, the dispensing valve X-axis 71 drives the dispensing valve Z-axis 78 to move to the position above the visual field of the CCD camera 143, a photographing signal is sent to CCD camera control software, the software photographs after receiving the photographing signal, the position value of the circle center position of the needle head on the visual field of the CCD camera 143 is obtained through software processing, and the result is returned to the PLC. After the PLC receives the position information, the physical coordinate position of the current needle head can be calculated.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under", 3 beneath "and 3 beneath" a second feature may be the first feature being directly under or obliquely under the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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

Claims

1. The utility model provides a syringe needle aligning device is glued to high accuracy point, its characterized in that includes:

the contact type displacement sensor (174) is positioned on one side below the dispensing needle head (114) and is used for detecting the Z value of the dispensing needle head (114);

a coaxial light source (144) mounted on the light source mounting plate (182) and located directly below the dispensing needle (114), an

A CCD camera (143) mounted on the camera mounting plate (175) and positioned below the coaxial light source (144) and coaxial with the coaxial light source (144).

2. The high-precision dispensing needle head alignment device according to claim 1, further comprising a camera fine adjustment slide (148) connected to the dispenser frame for fixing the camera mounting plate (175).

3. The high-precision dispensing needle alignment device according to claim 1, further comprising a three-axis cylinder (179) and a dust-proof plate (181), wherein the dust-proof plate (181) is horizontally disposed above the coaxial light source (144) and is connected to the cylinder rod of the three-axis cylinder (179).

4. The high-precision dispensing needle head alignment device according to claim 1, wherein a zoom lens (172) is mounted at a front end of the CCD camera (143).