阅读说明：本技术 一种智能音箱中框模具加工用定位组件 (Locating component is used in processing of intelligence audio amplifier center mould ) 是由 林光贤 陈宝 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种智能音箱中框模具加工用定位组件,包括定位机架,所述定位机架上固定安装有第一基座和第二基座,且第二基座上固定安装有定模具,所述定模具上固定安装有定位射光灯,且第一基座上固定安装有进推杆,所述进推杆上固定安装有进推架,且进推架上安装有具有感光调节功能的自定位动模具结构,所述自定位动模具结构上固定安装有光强传感器,所述第一基座和第二基座上固定安装有连接轨,且连接轨上滑动安装有保护盖；本发明的动模具安装在自定位动模具结构中,自定位动模具结构能够通过感光,自动的调节动模具的位置,针对定模具的位置进行校准定位后,从而进行精准的合模工作,保证了智能音箱中框注塑质量。(The invention discloses a positioning assembly for processing an intelligent loudspeaker box middle frame mold, which comprises a positioning rack, wherein a first base and a second base are fixedly installed on the positioning rack, a fixed mold is fixedly installed on the second base, a positioning light-emitting lamp is fixedly installed on the fixed mold, a feed push rod is fixedly installed on the first base, a feed push frame is fixedly installed on the feed push rod, a self-positioning mold structure with a photosensitive adjusting function is installed on the feed push frame, a light intensity sensor is fixedly installed on the self-positioning mold structure, connecting rails are fixedly installed on the first base and the second base, and a protective cover is slidably installed on the connecting rails; the movable mould is arranged in the self-positioning movable mould structure, the position of the movable mould can be automatically adjusted through light sensing, and the position of the fixed mould is calibrated and positioned, so that accurate mould closing work is performed, and the injection molding quality of the middle frame of the intelligent sound box is ensured.)

1. The utility model provides a locating component is used in processing of intelligence audio amplifier center mould, includes location frame (1), its characterized in that: a first base (2) and a second base (3) are fixedly arranged on the positioning frame (1), a fixed mould (4) is fixedly arranged on the second base (3), a positioning spotlight (5) is fixedly arranged on the fixed mould (4), a push rod (6) is fixedly arranged on the first base (2), a push frame (7) is fixedly arranged on the push rod (6), and the pushing frame (7) is provided with a self-positioning movable mould structure with a photosensitive adjusting function, a light intensity sensor (16) is fixedly arranged on the self-positioning movable mould structure, connecting rails (17) are fixedly arranged on the first base (2) and the second base (3), and a protective cover (18) is slidably mounted on the connecting rail (17), a display structure with a direct observation function is mounted on the protective cover (18), and a shading structure with a magnetic attraction sealing function is mounted on the protective cover (18).

2. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 1, wherein the positioning assembly comprises: visor (18) are pi type structure, erect between two connection rails (17), and show the structure including setting up logical groove (19) on visor (18), fixed mounting has transparent display screen (20) in leading to groove (19), and transparent display screen (20) and camera (21) electric connection, camera (21) fixed mounting is on the inner wall of visor (18).

3. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 1, wherein the positioning assembly comprises: the utility model discloses a positioning machine, including location frame (1), first base (2) and second base (3), fixed die utensil (4) fixed mounting is in the side of second base (3), and fixed die utensil (4) location die cavity and the feed chute intercommunication of second base (3), location spotlight lamp (5) are provided with four, install on the four corners of fixed die utensil (4).

4. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 1, wherein the positioning assembly comprises: the push rod (6) is connected to a hydraulic system in the first base (2), the push frame (7) is connected to the end of the push rod (6), the self-positioning movable mould structure comprises a vertical guide rail (8) fixedly arranged on a pushing frame (7), a vertical screw rod (9) is rotatably arranged in the vertical guide rail (8), a first nut seat (10) is connected on the vertical screw rod (9) in a threaded manner, and the first nut seat (10) is fixedly connected on a guide bracket (11), a cross screw rod (12) is rotatably arranged on the guide bracket (11), and a second nut seat (13) is connected on the transverse screw rod (12) in a threaded manner, the second nut seat (13) is fixedly connected on a movable die (14), and a photosensitive positioner (15) is fixedly installed on the movable mould (14), and the light intensity sensor (16) is installed on the side surface of the photosensitive positioner (15).

5. The positioning assembly for processing the middle frame mold of the intelligent sound box is characterized in that: the vertical guide rail (8) is arranged on the side face of the advancing and pushing frame (7), the vertical screw rod (9) is arranged in the vertical guide rail (8) through a bearing, the vertical screw rod (9) is driven by a motor, the first nut seat (10) is arranged in the vertical guide rail (8) in a sliding mode, and the guide support (11) is connected to the advancing and pushing frame (7) in a sliding mode.

6. The positioning assembly for processing the middle frame mold of the intelligent sound box is characterized in that: horizontal screw rod (12) pass through the bearing and install on guide bracket (11), and horizontal screw rod (12) pass through motor drive, second nut seat (13) slidable mounting is on guide bracket (11), and moves mould (14) slidable mounting on guide bracket (11), sensitization locator (15) are provided with four, install on the four corners of moving mould (14), and light intensity sensor (16) are provided with four.

7. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 1, wherein the positioning assembly comprises: the shading structure is including tubular motor (22) of fixed mounting on visor (18) inner wall, and winds on tubular motor (22) and absolutely installs at window shade (23), fixed mounting has counterweight rod (24) on window shade (23), and fixed mounting has magnetic stripe (25) on window shade (23), fixedly connected with soft pole (27) on counterweight rod (24), and fixed mounting has magnetic block (28) on soft pole (27), the shading structure is still including electromagnetic plate (26) and positioning seat (29) of fixed mounting on visor (18), and is provided with pull groove (30) on positioning seat (29), and fixed mounting has electro-magnet (31) in positioning seat (29).

8. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 7, wherein the positioning assembly comprises: tubular motor (22) are installed in the top that shows the structure, and counterweight rod (24) fixed mounting in the bottom of window shade (23), magnetic stripe (25) are inlayed and are installed on window shade (23), and soft pole (27) are installed in the bottom of counterweight rod (24), the tip at soft pole (27) is installed in magnetic path (28).

9. The positioning assembly for processing the middle frame mold of the intelligent sound box according to claim 7, wherein the positioning assembly comprises: the electromagnetic plate (26) is of a strip structure and is arranged on two sides of the display structure, the positioning seat (29) is embedded in a groove in the inner wall of the protective cover (18), the pull groove (30) is obliquely arranged on the positioning seat (29), and the end part of the electromagnet (31) is arranged close to the bottom of the pull groove (30).

Technical Field

The invention relates to the technical field of injection molding, in particular to a positioning assembly for processing an intelligent sound box middle frame mold.

Background

With the continuous progress of science and technology, the prices of various intelligent devices are more and more relative to people, and are inseparable from the daily life of people, so that the smart home is gradually realized at present. The current smart home comprises various smart furniture and smart appliances, and is connected to the Internet of things, and the most common control core is a smart sound box.

The intelligent sound box can perform voice interaction with a user, and achieves the effect of controlling the intelligent home through recognizing voice instructions, so that novel and interesting experience is brought to people.

The shell of the intelligent sound box is usually of a plastic structure, all parts of the shell are sequentially formed and then assembled by adopting an injection molding method, and the middle frame is a core component of the shell. Present intelligent audio amplifier center mould is common injection mold usually, at the in-process of carrying out injection moulding, uses locating lever constant head tank complex mode to fix a position the direction usually, at the in-process of long-term use, wearing and tearing appear very easily, lead to the location inaccurate, and audio amplifier center structure is comparatively complicated, has a lot of cell body structures, and the inaccurate very easy condition that makes the cell body jam in location appears, influences the assembly and the use in later stage. In view of this, we propose a locating component for processing of intelligent audio amplifier center mould.

Disclosure of Invention

The invention aims to provide a positioning assembly for machining an intelligent sound box middle frame mold, which aims to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligence audio amplifier center locating component for mould processing, includes the locating rack, fixed mounting has first base and second base in the locating rack, and fixed mounting has a fixed mould on the second base, fixed mounting has the location spotlight lamp on the fixed mould, and fixed mounting has the push rod on the first base, fixed mounting has the propulsion frame on the push rod, and installs the self-align mould structure that moves that has sensitization regulatory function on the propulsion frame, from the structural fixed mounting of positioning mould has light intensity sensor, fixed mounting has the connecting rail on first base and the second base, and slidable mounting has the visor on the connecting rail, install the display structure that has the direct observation function on the protective cover, and install the shading structure that has magnetism to inhale the block function on the protective cover.

Preferably, the visor is pi type structure, erects between two connection rails, and shows the structure including setting up the logical groove on the visor, fixed mounting has transparent display screen in leading to the groove, and transparent display screen and camera electric connection, camera fixed mounting is on the inner wall of visor.

Preferably, the locating rack upper surface sets up to level and smooth mesa, and first base and second base opposition install on the mesa of locating rack, decide mould fixed mounting in the side of second base, and decide the feed chute intercommunication of mould location mould type groove and second base, the location spotlight is provided with four, installs on the four corners of deciding the mould.

Preferably, advance the push rod and connect on the hydraulic system in first base, and advance the pushing frame and connect the tip at advancing the push rod, from the positioning moving die structure including fixed mounting erect the guide rail on advancing the pushing frame, and erect and rotate in the guide rail and install perpendicular lead screw, threaded connection has first nut seat on the perpendicular lead screw, and first nut seat fixed connection is on the guide bracket, rotate on the guide bracket and install horizontal lead screw, and threaded connection has second nut seat on the horizontal lead screw, second nut seat fixed connection is on rotating the mould, and fixed mounting has the sensitization locator on the moving die utensil, light intensity sensor installs the side at the sensitization locator.

Preferably, the vertical guide rail is installed on the side face of the pushing frame, the vertical screw rod is installed in the vertical guide rail through a bearing and is driven by a motor, the first nut seat is installed in the vertical guide rail in a sliding mode, and the guide support is connected to the pushing frame in a sliding mode.

Preferably, the horizontal screw rod passes through the bearing and installs on the guide bracket, and horizontal screw rod passes through motor drive, second nut seat slidable mounting is on the guide bracket, and moves mould slidable mounting on the guide bracket, the sensitization locator is provided with four, installs on the four corners of moving the mould, and light intensity sensor is provided with four.

Preferably, the shading structure is including the tubular motor of fixed mounting on the visor inner wall, and winds on the tubular motor and absolutely installs at the window shade, fixed mounting has the counterweight rod on the window shade, and fixed mounting has the magnetic stripe on the window shade, fixedly connected with soft pole on the counterweight rod, and fixed mounting has the magnetic path on the soft pole, the shading structure is still including fixed mounting electromagnetic plate and the positioning seat on the visor, and is provided with the kerve on the positioning seat, and fixed mounting has the electro-magnet in the positioning seat.

Preferably, the tubular motor is installed in the top that shows the structure, and counterweight rod fixed mounting is in the bottom of window shade, the magnetic stripe is inlayed and is installed on the window shade, and soft pole installs the bottom at the counterweight rod, the tip at soft pole is installed to the magnetic path.

Preferably, the electromagnetic plate is of a strip structure and is arranged on two sides of the display structure, the positioning seat is embedded in a groove in the inner wall of the protective cover, the pull groove is obliquely arranged on the positioning seat, and the end part of the electromagnet is arranged close to the bottom of the pull groove.

Compared with the prior art, the invention has the beneficial effects that:

1. the positioning frame is used as an installation foundation of a mold and a processing positioning assembly thereof, a first base and a second base on the positioning frame are respectively used for installing a movable mold and a fixed mold, wherein the fixed mold is fixedly installed as an inlet of a material and is provided with a positioning light-emitting lamp, the movable mold is provided with a light signal receiving structure, the movable mold is installed in a self-positioning movable mold structure, the self-positioning movable mold structure can automatically adjust the position of the movable mold through light sensing, the position of the fixed mold is calibrated and positioned, and then a pushing frame is pushed through a pushing rod, so that accurate mold assembly is carried out, the abrasion of hardware is complemented in the long-term use process, and the injection molding quality of the middle frame of the intelligent sound box is ensured;

2. when the self-positioning movable mould structure is used, an optical signal sent by a positioning light-emitting lamp on a fixed mould is received mainly through a photosensitive positioner, the intensity of the optical signal received by the photosensitive positioner is positively correlated with the alignment degree of the photosensitive positioner and the positioning light-emitting lamp, when the light intensity received by the photosensitive positioner exceeds a limited range, the positioning light-emitting lamp and the photosensitive positioner are aligned, namely the fixed mould and the movable mould are aligned, the mould closing can be carried out, a light intensity sensor is arranged on the side surface of the photosensitive positioner, the light intensity sensor is arranged on one side of a protective cover, the intensity of external light can be sensed, the light intensity detected by the light intensity sensor is subtracted from the light intensity received by the photosensitive positioner during measurement, and the effect of eliminating external interference is achieved;

3. according to the invention, the protective cover structure is arranged on the mold mounting structure formed by the first base and the second base, the protective cover has sliding capability and can be opened or closed, the display structure arranged on the protective cover has a direct observation function, when the protective cover is closed, if the transparent display screen is not opened, the injection molding process of the mold can be directly seen through the transparent display screen, and when the transparent display screen is shielded from the inside, the transparent display screen can be opened, the condition in the protective cover is shot through the shooting function of the camera and is displayed through the transparent display screen, so that an operator can conveniently observe the internal condition, and the camera can select a night vision device, so that the shooting effect under the low light level condition can be ensured;

4. the display structure is matched with the shading structure for use, the display structure arranged on the protective cover has light transmittance, so that external light can affect the photosensitive accuracy of the self-positioning mold structure, when the precision requirement is not very high, the external influence is eliminated by utilizing the measurement and calculation of the light intensity sensor, when the precision requirement is extremely high, the protective cover needs to be directly shielded by the shading structure to eliminate the external influence, and the display structure has night vision capability and can ensure artificial observation;

5. in the shading structure, the shading curtain is placed downwards through the tubular motor, the counterweight rods arranged on the shading structure can ensure the stability and the verticality of the process of placing the shading curtain downwards, after the placing is completed, the electromagnetic plate and the electromagnet in the shading structure can be electrified, the magnetic force generated by the electromagnetic plate acts on the magnetic strip, so that two sides of the shading curtain are tightly attached to the protective cover, the magnetic force of the electromagnet acts on the magnetic block, the soft rod is sucked into the pull groove, the shading curtain is pulled obliquely inwards, the shading curtain is pulled by the two actions in a coordinated mode, the through groove in the protective cover can be completely sealed by the shading curtain, the interference of external light is avoided, and the injection molding precision of a mold is ensured.

Drawings

FIG. 1 is a first schematic view of the overall structure of the present invention;

FIG. 2 is a second schematic view of the overall structure of the present invention;

FIG. 3 is a schematic illustration of the lid release configuration of the present invention;

FIG. 4 is a schematic view of a decapping structure of the present invention;

FIG. 5 is a schematic view of the mold structure of the present invention;

FIG. 6 is an enlarged view of area A in FIG. 5;

FIG. 7 is an exploded view of the mold positioning assembly of the present invention;

FIG. 8 is an enlarged view of area B of FIG. 7;

FIG. 9 is a schematic diagram of a display structure according to the present invention;

FIG. 10 is an exploded view of a display structure according to the present invention;

fig. 11 is an enlarged schematic view of the region C in fig. 10.

In the figure: the positioning device comprises a positioning rack 1, a first base 2, a second base 3, a fixed mold 4, a positioning spotlight 5, a push rod 6, a push frame 7, a vertical guide rail 8, a vertical screw rod 9, a first nut seat 10, a guide support 11, a horizontal screw rod 12, a second nut seat 13, a movable mold 14, a photosensitive positioner 15, a light intensity sensor 16, a connecting rail 17, a protective cover 18, a through groove 19, a transparent display screen 20, a camera 21, a tubular motor 22, a shading curtain 23, a balance weight rod 24, a magnetic stripe 25, an electromagnetic plate 26, a soft rod 27, a magnetic block 28, a positioning seat 29, a pull groove 30 and an electromagnet 31.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides a locating component is used in processing of intelligence audio amplifier center mould, including locating rack 1, fixed mounting has first base 2 and second base 3 on locating rack 1, and fixed mounting has fixed mould 4 on the second base 3, fixed mounting has location spotlight 5 on the fixed mould 4, and fixed mounting has push rod 6 on the first base 2, fixed mounting has push frame 7 on the push rod 6, and install the self-align mould structure that moves that has the sensitization regulatory function on the push frame 7, fixed mounting has light intensity sensor 16 on the self-align mould structure, fixed mounting has connecting rail 17 on first base 2 and the second base 3, and slidable mounting has visor 18 on connecting rail 17, install the display structure who has the direct observation function on visor 18, and install the shading structure who has the magnetism to inhale the closed function on visor 18.

The protective cover 18 is of an n-shaped structure and is erected between the two connecting rails 17, the display structure comprises a through groove 19 arranged on the protective cover 18, a transparent display screen 20 is fixedly arranged in the through groove 19, the transparent display screen 20 is electrically connected with a camera 21, and the camera 21 is fixedly arranged on the inner wall of the protective cover 18;

the protective cover structure is arranged on the mold mounting structure formed by the first base 2 and the second base 3, the protective cover 18 is mounted on the connecting rail 17, the protective cover 18 has sliding capacity and can be opened or closed, the display structure arranged on the protective cover 18 has a direct observation function, when the protective cover 18 is closed, if the transparent display screen 20 is not opened, the injection molding process of the mold can be directly seen through the transparent display screen 20, and when the transparent display screen 20 is shielded from the inside, the transparent display screen 20 can be opened, the condition in the protective cover 18 is shot through the shooting function of the camera 21, and the condition is displayed through the transparent display screen 20, so that an operator can conveniently observe the inside condition, and the camera 21 selects a night vision device to ensure the shooting effect under the low-light condition;

the upper surface of the positioning rack 1 is provided with a flat table top, the first base 2 and the second base 3 are oppositely arranged on the table top of the positioning rack 1, the fixed die 4 is fixedly arranged on the side surface of the second base 3, the positioning die grooves of the fixed die 4 are communicated with the feeding grooves of the second base 3, and four positioning light-emitting lamps 5 are arranged and arranged on four corners of the fixed die 4;

the positioning frame 1 is used as a mounting base of a mold and a processing positioning assembly thereof, and a first base 2 and a second base 3 on the positioning frame are respectively used for mounting a movable mold 14 and a fixed mold 4, wherein the fixed mold 4 is fixedly mounted and can be used as an inlet of a material, and a positioning light-emitting lamp 5 is arranged on the fixed mold and is matched with an optical signal receiving structure on the movable mold 14 to perform optical positioning;

the self-positioning moving die structure comprises a vertical guide rail 8 fixedly installed on the pushing frame 7, a vertical screw rod 9 is installed in the vertical guide rail 8 in a rotating mode, a first nut seat 10 is connected onto the vertical screw rod 9 in a threaded mode, the first nut seat 10 is fixedly connected onto a guide support 11, a transverse screw rod 12 is installed on the guide support 11 in a rotating mode, a second nut seat 13 is connected onto the transverse screw rod 12 in a threaded mode, the second nut seat 13 is fixedly connected onto a moving die 14, a photosensitive positioner 15 is fixedly installed on the moving die 14, and a light intensity sensor 16 is installed on the side face of the photosensitive positioner 15;

the movable mould 14 is arranged in a self-positioning movable mould structure, the position of the movable mould 14 can be automatically adjusted through light sensing by the self-positioning movable mould structure, the position of the fixed mould 4 is calibrated, then the pushing frame 7 is pushed through the pushing rod 6, so that accurate mould closing is carried out, the abrasion of hardware is complemented in the long-term use process, and the injection molding quality of the middle frame of the intelligent sound box is ensured;

the vertical guide rail 8 is arranged on the side surface of the pushing frame 7, the vertical screw rod 9 is arranged in the vertical guide rail 8 through a bearing, the vertical screw rod 9 is driven by a motor, the first nut seat 10 is arranged in the vertical guide rail 8 in a sliding mode, and the guide support 11 is connected to the pushing frame 7 in a sliding mode;

the transverse screw rod 12 is installed on the guide support 11 through a bearing, the transverse screw rod 12 is driven by a motor, the second nut seat 13 is installed on the guide support 11 in a sliding mode, the movable mold 14 is installed on the guide support 11 in a sliding mode, four photosensitive positioners 15 are arranged and installed on four corners of the movable mold 14, and four light intensity sensors 16 are arranged;

when the self-positioning movable mold structure is used, an optical signal sent by a positioning light-emitting lamp 5 on a fixed mold 4 is received mainly through a photosensitive positioner 15, the intensity of the optical signal received by the photosensitive positioner 15 is obviously in positive correlation with the alignment degree of the photosensitive positioner 15 and the positioning light-emitting lamp 5, when the light intensity received by the photosensitive positioner 15 exceeds a limited range, the positioning light-emitting lamp 5 and the photosensitive positioner 15 are aligned, namely the fixed mold 4 and the movable mold 14 are aligned, mold closing can be carried out, a light intensity sensor 16 is arranged on the side surface of the photosensitive positioner 15, the light intensity sensor is arranged on one side of a protective cover 18 and mainly senses the intensity of external light, and the light intensity detected by the light intensity sensor 16 is required to be subtracted from the light intensity received by the photosensitive positioner 15 during measurement, so that the external interference is eliminated;

when the light intensity is adjusted, the adjustment is mainly carried out through two precise screw rods and a motor which are vertically arranged, the vertical screw rod 9 in the vertical guide rail 8 rotates, the first nut seat 10 can be used for driving the guide bracket 11 to carry out adjustment in the vertical direction, the guide bracket 11 is driven by the transverse screw rod 12 to carry out the driving of the second nut seat 13, the transverse position adjustment of the movable mold 14 can be carried out, the adjustment in the two directions is combined, the movable mold 14 can be quickly and accurately sent to the position aligned with the fixed mold 4, and then the mold closing is carried out;

the shading structure comprises a tubular motor 22 fixedly installed on the inner wall of the protective cover 18, the tubular motor 22 is installed on a shading curtain 23 in a winding mode, a counterweight rod 24 is fixedly installed on the shading curtain 23, a magnetic strip 25 is fixedly installed on the shading curtain 23, a soft rod 27 is fixedly connected onto the counterweight rod 24, a magnetic block 28 is fixedly installed on the soft rod 27, the shading structure further comprises an electromagnetic plate 26 and a positioning seat 29 which are fixedly installed on the protective cover 18, a pull groove 30 is formed in the positioning seat 29, and an electromagnet 31 is fixedly installed in the positioning seat 29;

the display structure arranged on the protective cover 18 has light transmission, so that external light can affect the light sensing accuracy of the self-positioning mold structure, when the accuracy requirement is not very high, the external influence is eliminated by utilizing the measurement and calculation of the light intensity sensor 16, and when the accuracy requirement is very high, the protective cover 18 needs to be directly shielded through the shading structure to eliminate the external influence, and the display structure has night vision capability and can ensure artificial observation;

the tubular motor 22 is arranged above the display structure, the counterweight rod 24 is fixedly arranged at the bottom of the light-shielding curtain 23, the magnetic strip 25 is embedded on the light-shielding curtain 23, the soft rod 27 is arranged at the bottom of the counterweight rod 24, and the magnetic block 28 is arranged at the end part of the soft rod 27;

the electromagnetic plate 26 is of a long strip structure and is arranged on two sides of the display structure, the positioning seat 29 is embedded in a groove on the inner wall of the protective cover 18, the pull groove 30 is obliquely arranged on the positioning seat 29, and the end part of the electromagnet 31 is arranged close to the bottom of the pull groove 30;

when the shading structure is opened, the shading curtain 23 is placed downwards through the tubular motor 22, the counterweight rods 24 can ensure the stability and the verticality of the placement process of the shading curtain 23, after the placement is completed, the electromagnetic plate 26 and the electromagnet 31 in the shading structure are electrified, the magnetic force generated by the electromagnetic plate 26 acts on the magnetic strip 25, so that two sides of the shading curtain 23 are tightly attached to the protective cover 18, the magnetic force of the electromagnet 31 acts on the magnetic block 28, the soft rod 27 is sucked into the pull groove 30, an oblique inward pulling force is generated on the shading curtain 23, the shading curtain 23 is pulled by the two actions in a synergistic mode, the shading curtain 23 can be ensured to completely seal the through groove 19 in the protective cover 18, the interference of external light is avoided, and the precision of mold injection molding processing is ensured;

the working principle is as follows: firstly, a positioning rack 1 is used as a mounting base of a mold and a processing positioning assembly thereof, a first base 2 and a second base 3 on the positioning rack are respectively used for mounting a movable mold 14 and a fixed mold 4, wherein the fixed mold 4 is fixedly mounted and can be used as a material inlet, a positioning light-emitting lamp 5 is arranged on the fixed mold and is matched with an optical signal receiving structure on the movable mold 14 to perform optical positioning, the movable mold 14 is mounted in a self-positioning movable mold structure, the self-positioning movable mold structure can automatically adjust the position of the movable mold 14 through light sensing, the position of the fixed mold 4 is calibrated, and then a pushing frame 7 is pushed through a pushing rod 6, so that accurate mold closing is performed, in the long-term use process, the abrasion of hardware is complemented, and the injection molding quality of the middle frame of the intelligent sound box is ensured;

when the self-positioning movable mould structure is used, the light signal sent by the positioning light-emitting lamp 5 on the fixed mould 4 is received mainly by the photosensitive locator 15, the intensity of the light signal received by the photosensitive locator 15 is obviously positively correlated with the alignment degree of the photosensitive locator 15 and the positioning light-emitting lamp 5, when the light intensity received by the photosensitive locator 15 exceeds a limited range, the positioning light-emitting lamp 5 and the photosensitive locator 15 are aligned, namely the fixed mould 4 and the movable mould 14 are aligned, the mould closing can be carried out, the light intensity sensor 16 is arranged on the side surface of the photosensitive locator 15, the light intensity sensor is arranged on one side of the protective cover 18, the intensity of external light is mainly sensed, when in measurement, the light intensity detected by the light intensity sensor 16 needs to be subtracted from the light intensity received by the photosensitive locator 15, the effect of eliminating external interference is achieved, when in adjustment according to the light intensity, the method is mainly carried out through two precise screw rods and a motor which are vertically arranged, a vertical screw rod 9 in a vertical guide rail 8 rotates, a first nut seat 10 can be used for driving a guide support 11 to carry out adjustment in the vertical direction, a transverse screw rod 12 is used for driving a second nut seat 13 on the guide support 11, the transverse position of a movable mold 14 can be adjusted, the adjustment in the two directions is combined, the movable mold 14 can be quickly and accurately conveyed to a position aligned with a fixed mold 4, and then mold closing is carried out;

meanwhile, a protective cover structure is arranged on a mold mounting structure formed by the first base 2 and the second base 3, the protective cover 18 is arranged on the connecting rail 17, the protective cover 18 has sliding capability and can be opened or closed, and a display structure arranged on the protective cover 18 has a direct observation function, when the protective cover 18 is closed, if the transparent display screen 20 is not opened, the injection molding process of the mold can be directly seen through the transparent display screen 20, and when the transparent display screen 20 is shielded from the inside, the transparent display screen 20 can be opened, the condition in the protective cover 18 is shot through the shooting function of the camera 21, and the condition is displayed through the transparent display screen 20, so that an operator can conveniently observe the inside condition, the camera 21 selects a night vision device to ensure the shooting effect under the low light condition, the display structure arranged on the protective cover 18 has light transmittance, and the external light can influence the self-sensitivity of the positioning mold structure, when the precision requirement is not very high, the external influence is eliminated by utilizing the measurement of the light intensity sensor 16, when the precision requirement is very high, the protective cover 18 needs to be directly shielded through the light shielding structure, the external influence is eliminated, the display structure has night vision capability, the artificial observation can be ensured, when the light shielding structure is opened, the window shade 23 is placed down through the tubular motor 22, the counterweight rod 24 can ensure the stability and the verticality of the placement process of the window shade 23, after the placement is completed, the electromagnetic plate 26 and the electromagnet 31 in the light shielding structure are electrified, the magnetic force generated by the electromagnetic plate 26 acts on the magnetic strip 25, so that two sides of the window shade 23 are tightly attached to the protective cover 18, the magnetic force of the electromagnet 31 acts on the magnetic block 28, the soft rod 27 is sucked into the pull groove 30, the oblique inward pulling force is generated on the window shade 23, and the two actions are cooperatively pulled by the window shade 23, the through groove 19 on the protective cover 18 can be completely closed by the shading curtain 23, so that the interference of external light is avoided, and the injection molding precision of the mold is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.