CN106002198B - Automatic buckling mechanism for shell - Google Patents

Abstract

The invention provides an automatic buckling mechanism of a shell, which comprises a pressing plate, a first air cylinder, a supporting table, a bearing plate arranged on the surface of the supporting table, a positioning jig arranged on the surface of the bearing plate, a second air cylinder and a pushing block arranged on the second air cylinder, wherein the positioning jig comprises a positioning groove, one end of the positioning groove is an opening end, the other end of the positioning groove is provided with an elastic stop block, the second air cylinder is arranged on the bearing plate and drives the pushing block to enter the positioning groove through the opening end, a pressing block is arranged on the surface of the pressing plate facing the positioning groove, the first air cylinder is rotationally connected with the surface of the pressing plate opposite to the pressing plate, the pressing plate is rotationally arranged on the supporting table, the first air cylinder drives a rotating cover of the pressing plate to the positioning jig, the pressing block is positioned in the.

Description

Shell automatic buckle mechanism

technical field

The invention relates to the field of manufacturing technology, in particular to an automatic fastening mechanism for a mobile terminal housing.

Background technique

With the development of high technology, more and more automatic equipment is used in the production and assembly process in the manufacturing field, which can improve production efficiency and reduce labor costs. For example, the demand for mobile phones is increasing rapidly, and manufacturers are manufacturing In the process, it is not only necessary to increase the production speed, but also to reduce the cost while ensuring the quality. For mobile phones, there are many processes in the assembly process, and the appearance effect is extremely important. The battery cover is also the back cover of the mobile phone. During the assembly process, the battery cover is manually pressed onto the assembled body of the mobile phone, and the battery cover and the body are locked by a locking mechanism or a locking member, but this is inefficient. Moreover, the hardness of the metal battery cover is relatively large, and it is difficult to assemble it manually.

Contents of the invention

In view of this, the present invention provides an automatic fastening mechanism for the housing to improve the assembly efficiency and yield of the housing.

The automatic fastening mechanism of the housing includes a pressure plate, a first cylinder, a support platform, a bearing plate mounted on the surface of the support platform, a positioning fixture mounted on the surface of the bearing plate, a second cylinder, and a pusher mounted on the second cylinder. block, the positioning jig includes a positioning groove, one end of the positioning groove is an open end, and the other is provided with an elastic stopper, the second cylinder is mounted on the bearing plate and drives the push block through the opening The end of the pressure plate enters the positioning groove, the surface of the pressure plate facing the positioning groove is provided with a pressure block, the first cylinder is rotatably connected to the surface of the pressure plate opposite to the pressure plate, and the pressure plate is rotatably mounted on the support table. The first cylinder drives the rotating cover of the pressing plate to the positioning jig, the pressing block is located in the positioning groove, and the elastic stopper elastically resists the housing.

Wherein, an elastic adjustment part is provided between the support table and the bearing plate, and the elastic adjustment part includes several springs, several guide rods and limit screws mounted on linear bearings, and the springs are located on the bearing plate. The inside of the plate is connected to the support platform, the linear bearing is installed on the support platform, the guide rod is connected to the bearing plate, and the limit screw is connected to the support platform and the bearing plate.

Wherein, a notch is provided at one corner of the pressure block, and the automatic fastening mechanism of the housing includes an auxiliary cylinder, and the auxiliary cylinder is provided with an auxiliary pressure block, and the auxiliary cylinder is installed on the pressure plate to communicate with the first cylinder. Adjacent, the auxiliary pressing block is located in the block gap of the pressing block, and the auxiliary cylinder drives the auxiliary pressing block to expand and contract relative to the pressing plate.

Wherein, the support platform is provided with support rods on the opposite sides of the bearing plate, and the support rods are provided with adjustment screws, adjustment springs coaxially arranged with the adjustment screws, and connecting adjustment springs and adjustment screws. The block, the block is provided with a bearing, the adjustment spring and the block are arranged inside the support rod, the adjustment screw is installed on the end of the support rod away from the support table, and the two sides of the pressure plate A rotating shaft is provided, and the rotating shaft is rotatably installed in the bearing.

Among the several springs located between the bearing plate and the support platform, the number of springs on the same side as the elastic stopper is more than the number of springs at other positions, and the number of springs makes the load The plate is balanced with the pressure plate.

Wherein, the pressure block is formed along the periphery of the surface of the pressure plate and is located at a corner of the pressure plate to form the gap, the part of the pressure block facing the elastic stopper is made of plastic, and the other part is made of elastic colloid .

Wherein, the elastic stopper includes a coil spring and a stopper, the coil spring is arranged axially perpendicular to the bearing plate, and the stopper accommodates the coil spring and moves along the elastic direction of the coil spring.

Wherein, the automatic fastening mechanism of the housing includes a control device for controlling the movement of the first cylinder, the second cylinder and the auxiliary cylinder.

Wherein, the pressing plate is made of aluminum alloy.

Wherein, the guide rod of the first air cylinder is rotatably connected to the pressing plate through a hinge structure.

The automatic fastening mechanism of the shell of the present invention presses down the battery cover sequentially according to the different positions of the battery cover through the flip-type pressing plate, and drives the push block to beat the battery cover through the cylinder to realize the precise alignment and safe pressing of the battery cover and The cylinder drives the pressure plate to press to ensure that the buckle is in place.

Description of drawings

In order to more clearly illustrate the structural features and functions of the present invention, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of the automatic fastening mechanism of the housing provided by the present invention, wherein the pressure plate is in an open state.

Fig. 2 is a partially enlarged view of the automatic fastening mechanism of the housing shown in Fig. 1 .

Fig. 3 is a schematic diagram of the rear of the automatic fastening mechanism of the housing described in Fig. 1 .

FIG. 4 is a schematic cross-sectional view of a part of the structure of the automatic fastening mechanism of the housing shown in FIG. 1 , mainly showing the elastic adjustment part.

Fig. 5 is a schematic cross-sectional view of part of the structure of the automatic fastening mechanism of the housing described in Fig. 1, mainly showing the elastic stopper part.

Fig. 6 is a schematic cross-sectional view of part of the structure of the automatic fastening mechanism of the housing described in Fig. 1, mainly showing the support frame.

Fig. 7 is a rear schematic view of the automatic fastening mechanism of the housing described in Fig. 1, wherein the pressure plate is in a closed state.

specific embodiment

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Please refer to FIG. 1 and FIG. 3 , a specific embodiment of the present invention provides an automatic fastening mechanism for a case. In this embodiment, it is used for fastening the battery cover of the mobile phone with the main body of the mobile phone, and the case refers to the battery cover. The housing automatic fastening mechanism 100 includes an outer box body 10 provided with an activation device 11 , an operation window 12 is provided on the outer box body 10 , and a safety grating pressure plate (not shown) is provided at the position of the operation window 12 . It also includes a supporting platform 13, a pressing plate 14, a first cylinder 15, a bearing plate 16 mounted on the surface of the supporting platform 13, a positioning fixture 17 mounted on the surface of the supporting platform 16, a second cylinder 18, and a second cylinder 18. Push block 19. Wherein the supporting platform 13 is provided with two sets of fastening components consisting of a bearing plate 16 , a pressing plate 14 , a first cylinder 15 , a positioning jig 17 , a second cylinder 18 and a push block 19 . In this embodiment, one group is taken as an example for description.

Please also refer to FIG. 2, the positioning fixture 17 includes a positioning groove 171, one end of the positioning groove 171 is an open end 172, and the other is provided with an elastic stopper 20, and the second cylinder 18 is installed on the bearing plate 16 and drives the push block 19 to enter the positioning groove 171 through the open end 172, the pressing plate 14 is provided with a pressing block 142 on the surface facing the positioning groove 171, and the first cylinder 15 is rotatably connected to the pressing plate 14 On the surface opposite to the pressure block 142, the pressure plate 14 is rotatably mounted on the support table 13, the first cylinder 15 drives the pressure plate 14 to rotate and cover the positioning jig 17, and the pressure plate 142 Located in the positioning groove 171 , the elastic block 20 elastically resists the battery cover (not shown). As shown in Figure 5, the elastic stopper 20 includes a coil spring 21 and a stopper 22, the coil spring 21 is arranged axially perpendicular to the bearing plate 16, the stopper 22 accommodates the coil spring 21 and moves along with it. The helical spring 21 moves in the elastic direction.

Specifically, the pressing plate 14 is a rectangular plate body, the pressing plate is made of aluminum alloy, and has sufficient strength. Both ends of the pressing plate 14 are rotationally connected to the support table through a rotating shaft 141 (refer to FIG. 6 ), and are located above the positioning jig 17. The first cylinder 15 is mounted on the pressing plate 14 through a hinge structure 152. The surface facing away from the positioning jig 17 is away from the side of the rotating shaft, the first cylinder 15 drives the pressure plate 14 to flip or cover relative to the positioning jig 17, and the hinge structure 152 is connected to the guide rod of the first cylinder 15 And under the thrust of the guide rod, it can flexibly move along with the pressing direction of the pressing plate 14. The carrying board 16 is a rectangular board, which is stacked on the supporting platform 13 . The positioning groove 171 is disposed on a surface of the positioning jig 17 away from the supporting board 16 . The positioning slot 171 is provided with a suction cup and a positioning part for fixing the main body of the mobile phone. The specific structure of the positioning part is different according to the main body of the mobile phone, and is not limited again. The movable rod of the second cylinder 18 is arranged parallel to the bearing plate 16, the push block 19 is arranged on the movable rod of the second cylinder 18, and the second cylinder 18 can drive the push block 19 back and forth quickly move. The push block 19 is used to slap one end of the battery cover positioned in the positioning groove 171 , and in this embodiment, the buckling starting point of the battery cover is far away from the end where the earphone hole is provided. Described elastic stopper 20 is used for positioning mobile phone main body displacement when pushing block 19 beats battery cover one end, can compress helical spring 21 and move down after battery cover is subjected to the pressure of pressing plate 14, prevents battery cover from buckling in place.

Referring to FIG. 4 together, the pressing block 142 is substantially rectangular, with a notch 143 at one corner. The pressure block 142 is formed along the periphery of the surface of the pressure plate 14 and is located at a corner of the pressure plate 14 to form the gap 143. The position of the pressure block 142 facing the elastic stopper 20 is made of plastic, and the other parts are made of plastic. Made of elastic gel. In this embodiment, the part facing the elastic stopper 20 is made of Teflon, and the other parts are made of Urex, so that the pressure of the pressing plate 14 can be ensured without damaging the surface of the battery cover, and according to different hardness The pressing block can be effectively pressed against the positions of different strengths of the battery cover.

Further, referring to FIG. 4 again, an elastic adjustment part is provided between the support table 13 and the bearing plate 16, and the elastic adjustment part includes several springs 161 and several guide rods 163 mounted on linear bearings 162 and Limit screw 164, the spring 161 is located inside the bearing plate 16 and connected to the support platform 13, the linear bearing 162 is mounted on the support platform 13, and the guide rod 163 is connected to the bearing plate 16 , the limit screw 164 connects the supporting platform 13 and the bearing plate 16 . Among the several springs 161 located between the bearing plate 16 and the support table 13, the number of springs 161 on the same side as the elastic stopper 20 is more than the number of springs at other positions, and several springs make The carrying plate 16 is kept in balance.

In this embodiment, the supporting plate 16 is provided with a concave portion facing the surface of the supporting plate 13 for accommodating the spring 161 . There are 10 springs and they are coil springs. There are 4 springs 161 located on the same side as the elastic stopper 20 , and the other 6 springs are evenly distributed in other positions around the bearing plate 16 . One end of the spring 161 is connected to the bearing plate 16 and the other end is connected to the support plate 13 . The linear bearing 162 is installed at the four corners of the support platform 13, the guide rod 163 is slidably installed in the linear bearing 162, and one end is connected to the bearing plate 16, the axis of the guide rod 163 is deformed by the elastic force of the spring 161 same direction. The limit screw 164 connects the supporting platform 13 and the bearing plate 16 to limit the deformation of the spring 161 and ensure the stability of the bearing plate. When the thickness of the main body of the mobile phone installed in the positioning fixture is greater than the standard design thickness, the spring 161 of the elastic adjustment part will shrink and deform after receiving the excessive pressure of the bearing plate 16 during the pressing process of the pressing plate. The pressure of the pressure plate produces a buffering effect and reaches a balance point with the pressure of the pressure plate, thereby preventing the pressure of the pressure plate 14 from damaging the main body of the mobile phone. When the main body of the mobile phone matches the preset size of the positioning fixture, the chance of elastic deformation of the spring is negligible of.

Further, the automatic fastening mechanism of the housing includes an auxiliary cylinder 24, the auxiliary cylinder 24 is provided with an auxiliary pressing block 241, and the auxiliary cylinder 24 is installed on the pressing plate 14 adjacent to the first cylinder 15, The auxiliary pressing block 241 is located in the block gap 143 of the pressing block 142 , and the auxiliary cylinder 24 drives the auxiliary pressing block 241 to expand and contract relative to the pressing plate 14 . Auxiliary briquetting block 241 is made of Teflon, and it is located on the guide rod of auxiliary cylinder 24 and is positioned at the surface that described pressing plate 14 is provided with briquetting block 142, and concrete breach 143 is located at a corner of pressing plate 14, and auxiliary briquetting block 241 Located in the gap 143, when the pressure plate 14 is pressed down, the pressure block 142 is pressed to three positions of the battery cover first, and then the auxiliary cylinder 24 drives the auxiliary pressure block 241 to press down to perform targeted pressure on a corner of the battery cover. Pressing can prevent the deformation of the battery cover. In this embodiment, the auxiliary pressing block 241 is close to the position where the earphone hole is provided on the battery cover, that is to say, the position where the hardness of the battery cover is relatively weak.

Further, the automatic fastening mechanism of the housing includes a control device for controlling the movement of the first cylinder 15 , the second cylinder 18 and the auxiliary cylinder 24 . In this embodiment, the control device is to activate the movement of the first cylinder 15, the second cylinder 18 and the auxiliary cylinder 24 through different switches.

Further, referring to FIG. 6 , the support platform 13 is provided with support rods 26 on opposite sides of the bearing plate 14, and the support rods 26 are provided with adjustment screws 261 coaxially arranged with the adjustment screws 261. The adjustment spring 262, the block 263 between the adjustment spring 262 and the adjustment screw 261, the block 263 is provided with a bearing 264, the adjustment spring 262 and the block are located inside the support rod 26, the The adjustment screw 261 is installed on the end of the support rod 26 away from the support table 13 ; the two sides of the pressure plate 14 are provided with the rotating shaft 141 , and the rotating shaft 141 is installed in the bearing 264 in rotation. In this embodiment, the support rod 26 is provided with a cavity 260 . The cavity 260 accommodates the adjusting spring 262 and the block 263, the adjusting spring 262 supports the block 263, the bearing is mounted on the block 263 and connected with the rotating shaft 141 inserted into the cavity 260 . The adjustable screw 261 extends into the cavity 260 from the end of the support rod 26 far away from the supporting platform 13 to connect with the block 263, and the locking force of the adjusting screw 261 and the elastic support of the adjusting spring 262 Force balance to locate the position of the block 263 in the cavity 260, and then locate the position of the rotating shaft 141, so as to realize the positioning and adjustment of the height of the pressing plate 14 relative to the bearing plate, wherein the height adjustment is achieved by moving the adjustment screw 261 relative to the block 263 At the same time, it can ensure that the battery cover is subjected to uniform pressure and sufficient fastening force.

Referring to Fig. 7 together, when the automatic fastening mechanism of the housing described in the present application is working, the battery cover is installed on the main body of the mobile phone which has been positioned, so that the positioning of the battery cover and the main body of the mobile phone in the width direction can be determined, and the length direction is ie The battery cover is basically positioned towards the direction of the second cylinder. First, start the second cylinder 18 of the automatic fastening mechanism of the housing, so that the push block 19 quickly slaps the end of the battery cover. This end is far away from the earphone hole or USB. end of the hole. The number of times the battery cover is slapped by the push block 19 and the interval time are set by the single-chip microcomputer program according to the preset degree of alignment of the battery cover. When the battery cover is slapped for the last time, the guide rod of the second cylinder 18 does not return so that the push block touches the end of the battery cover. Keep the position of the battery cover to prevent the battery cover from receding due to the friction of the pressure plate during the main fastening process. After tapping, the female buckle on the inner side of the battery cover is aligned with the male buckle on the main body of the phone. Because in the process of beating, mobile phone main body moves easily, and described double suction cup is set in positioning groove as positioning, and is provided with automatic detection equipment, when mobile phone main body produces mobile position deviation, pressing plate can not start. Then start the first cylinder 15, drive the pressing plate 14 to turn over and press it to the top of the battery cover, and the guide rod pushes the pressing plate 14 to turn over through the hinge structure. One end is sequentially pressed to the other (USB hole earphone hole) end, and the pressing block 142 is made of Teflon material and Urex glue material to ensure that the battery cover and the appearance will not be damaged after being stressed; then start the auxiliary cylinder 24 to drive the auxiliary pressing block 241 Press the last corner of the battery cover, and then realize the sequential pressing of the pressing plate on the different stressed parts of the battery cover, to ensure that the opening (such as the earphone hole) of the battery cover is not damaged and deformed, and the auxiliary cylinder then presses the corner near the earphone. The buckle is in place, which solves the problem of deformation of the earphone hole. The overall strength of the pressure plate 14 made of 20mm thick aluminum alloy ensures the flatness of the battery cover after fastening, and prevents the high-gloss surface of the battery cover from being deformed by force (stretching, extrusion, twisting, etc.), ensuring that the high-gloss surface looks intact sex. During this process, the elastic stopper 20 can shrink and press down on the battery cover through the coil spring, and the contraction displacement of the elastic stopper 20 is limited by setting the contact position, so as to prevent the elastic stopper 20 from contacting the battery when the battery cover is pressed down to a certain extent. The interference of the cover leads to the buckle not in place/large seam, which plays a role in process positioning.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (9)

1. A shell automatic fastening mechanism, which includes a pressing plate, a first cylinder, a support platform, a bearing plate mounted on the surface of the support platform, a positioning fixture mounted on the surface of the bearing plate, a second cylinder and The push block mounted on the second cylinder, the positioning fixture includes a positioning groove, one end of the positioning groove is an open end, and the other is provided with an elastic stopper, the second cylinder is mounted on the bearing plate and Drive the push block to enter the positioning groove through the opening end, the surface of the pressure plate facing the positioning groove is provided with a pressure block, the first cylinder is rotatably connected to the surface of the pressure plate opposite to the pressure plate, and the pressure plate is The ends on both sides are rotatably connected with the support table through the rotating shaft, the first cylinder drives the rotating cover of the pressing plate to the positioning jig, the pressing block is located in the positioning groove, and a corner of the pressing block is set There is a gap, the automatic fastening mechanism of the shell includes an auxiliary cylinder, the auxiliary cylinder is provided with an auxiliary pressing block, the auxiliary air cylinder is installed on the pressing plate adjacent to the first cylinder, and the auxiliary pressing block is located on the In the block gap of the pressing block, the auxiliary cylinder drives the auxiliary pressing block to expand and contract relative to the pressing plate, and the elastic stopper elastically supports the housing. 2. The shell automatic fastening mechanism according to claim 1, characterized in that, an elastic adjustment part is provided between the support platform and the bearing plate, and the elastic adjustment part includes several springs and several fittings. The linear bearing, guide rod and limit screw on the support plate, the spring is located inside the bearing plate and connected to the support platform, the linear bearing is installed on the support platform, the guide rod and the bearing The plate is connected, and the limit screw is connected to the supporting platform and the bearing plate. 3. The automatic fastening mechanism of the housing according to claim 1, characterized in that, the supporting platform is provided with supporting rods on opposite sides of the bearing plate, and the supporting rods are provided with adjusting screws, which are connected with the supporting rods. The adjustment spring coaxially arranged with the adjustment screw, the block between the adjustment spring and the adjustment screw, the block is provided with a bearing, the adjustment spring and the block are arranged inside the support rod, and the adjustment screw Installed on the end of the support rod away from the support platform, the two sides of the pressure plate are provided with rotating shafts, and the rotating shafts are installed in the bearings in rotation. 4. The automatic fastening mechanism of the housing according to claim 2, characterized in that, among the several springs located between the bearing plate and the support platform, the one located on the same side as the elastic stopper The number of springs is more than that in other positions, and several springs keep the bearing plate and the pressing plate in balance. 5. The automatic fastening mechanism of the housing according to claim 1, wherein the pressure block is formed along the periphery of the surface of the pressure plate and is located at a corner of the pressure plate to form the notch, and the pressure block faces the Part of the elastic stopper is made of plastic, and other parts are made of elastic colloid. 6. The shell automatic fastening mechanism according to claim 1, wherein the elastic stopper comprises a coil spring and a stopper, the coil spring is arranged axially perpendicular to the bearing plate, and the stopper The coil spring is accommodated and moves along the elastic direction of the coil spring. 7. The automatic housing buckling mechanism according to claim 1, characterized in that the housing automatic buckling mechanism comprises a control device for controlling the movement of the first cylinder, the second cylinder and the auxiliary cylinder. 8. The housing automatic fastening mechanism according to any one of claims 1-7, wherein the pressing plate is made of aluminum alloy. 9. The automatic fastening mechanism of the housing according to any one of claims 1-7, wherein the guide rod of the first cylinder is rotatably connected to the pressing plate through a hinge structure.