CN218776413U - Sand blasting jig for preventing deformation of electronic product ultrathin workpiece - Google Patents

Abstract

The utility model discloses a sand blasting jig for preventing deformation of an electronic product ultrathin workpiece, which comprises a sand blasting frame base (1) and a plurality of profiling supporting bodies (2) arranged on the sand blasting frame base (1) and capable of being stuffed into the workpiece (100), and the utility model can carry out full profiling inner contact surface support on the workpiece (100) based on the profiling supporting bodies (2), thereby effectively preventing the workpiece (100) from deforming; and the method is particularly suitable for changing the sand blasting mode into two times of single-side sand blasting, and because the width of the profiling support body (2) refers to the lower tolerance size of the internal height of the workpiece (100), in the single-side sand blasting process, one inner wall corresponding to the length dimension and the width dimension of the workpiece (100) is attached to the supporting surface of the profiling support body (2), while the other inner wall corresponding to the length dimension and the width dimension of the workpiece (100) is free, so that the force borne by the workpiece (100) is completely absorbed by the profiling support body (2) without deformation.

Description

Sand blasting jig for preventing deformation of electronic product ultrathin workpiece

Technical Field

The utility model relates to an electron product sandblast field especially relates to a prevent sandblast tool that ultra-thin work piece of electron product warp.

Background

With the continuous improvement of the consumption level of people, consumer electronic products are increasingly perfect. On the premise of excellent performance, ultra-light, ultra-thin and frosted hand feeling in structure is increasingly sought after by consumers. At present, the technology of realizing frosted hand feeling by sandblasting the surface of a metal shell is widely applied, however, as the shell is thinner and thinner, the problem of shell deformation caused by sandblasting becomes a technical difficulty which cannot be avoided by the industry. Specifically, six to eight sand blasting guns are usually arranged in the sand blasting machine, and the positions of the sand blasting guns are adjustable. When a workpiece is subjected to sand blasting, the workpiece is hung on a rack and is conveyed into a sand blasting area by a conveying belt, sand grains are sprayed out from two sides of a sand blasting gun at the same time, then residual sand grains on the workpiece and the rack are removed by air spraying, and the thicker workpiece or the material which is difficult to generate plastic deformation does not have the deformation problem after sand blasting. However, in order to improve the quality of the product, a metal material is generally used, and in order to reduce the weight of the product, the metal material is selected to be further reduced, and a lighter aluminum material is generally selected, and in addition, in order to reduce the thickness of the product and make the thickness of the aluminum material the thinnest, and on the basis, in order to improve the hand feeling of the product, when sand blasting is performed, the thin and easily deformable workpiece is faced, and the deformation of the workpiece is an unprecedented difficulty in the industry.

Referring to fig. 1, taking an aluminum housing of an electronic product as an example, the workpiece is a long flat hollow housing with a wall thickness less than one millimeter. In the figure, the width of the opening (indicated by the arrow in the figure) of the product after the surface is sandblasted is reduced by six percent on average compared with the width before sandblasting, so that the size of the opening width is seriously out of limits. In the production of products, the sizes of individual parts are unqualified for a long time due to the sand blasting process and cannot be solved, and only standard goods receiving can be widened, so that infinite hidden dangers are brought to the product quality.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the defect that the above-mentioned sandblast of prior art warp, provide a prevent the sandblast tool that the ultra-thin work piece of electronic product warp.

The utility model provides a technical scheme that its technical problem adopted is: the sand blasting jig is used for mounting a plurality of workpieces and then matching with a conveying type sand blasting machine to realize batch sand blasting on the workpieces, wherein the workpieces are in a long strip shape and are hollow inside, two end faces corresponding to the width dimension and the height dimension of the workpieces are opposite to a pair of insertion holes, and one side face corresponding to the length dimension and the height dimension of the workpieces forms an open window for assembling the workpieces and an external structure; the sand blasting jig comprises a sand blasting frame base and a plurality of profiling supporting bodies which are arranged on the sand blasting frame base and can be plugged into the workpiece, wherein the profiling supporting bodies are sequentially arranged, and the arrangement direction of the profiling supporting bodies is vertical to the length direction of the profiling supporting bodies;

the workpiece is reversely buckled on the profiling support body through the open window, the surface of the profiling support body is completely manufactured according to the inner surface appearance of the workpiece so as to realize full-profiling inner-contact-surface support of the workpiece, the width of the profiling support body refers to the lower tolerance size of the inner height of the workpiece, so that in the process of single-side sand blasting, the inner wall of one side corresponding to the length dimension and the width dimension of the workpiece is attached to the support surface of the profiling support body, and the inner wall of the other side corresponding to the length dimension and the width dimension of the workpiece is free, so that the force applied to the workpiece is completely absorbed by the profiling support body without deformation.

Further, prevent among the sandblast tool of ultra-thin work piece deformation of electronic product, profile modeling supporter bottom lateral wall is fixed through one row of pole setting and sandblast frame base, one row the pole setting is followed the length direction of profile modeling supporter arranges, the pole setting perpendicular to the length direction of profile modeling supporter.

Further, prevent among the sandblast tool that ultra-thin work piece of electronic product warp, two terminal surfaces of profile modeling supporter are just to setting up the connecting hole that can face the jack, the plug is inserted to the connecting hole internalization, the plug can be followed the jack is stretched out in order to prevent that the work piece from droing.

Further, prevent among the sandblast tool that ultra-thin work piece of electronic product warp, the both sides limit of sandblast frame base sets up with a plurality of the many pairs of stands that the profile modeling supporter corresponds, two terminal surfaces of profile modeling supporter are just to setting up the connecting hole that can face the jack, two connecting holes of profile modeling supporter and a pair of stands on the sandblast frame base are assembled through a pair of locating pin of peeing height and are in order to prop up from both ends the profile modeling supporter.

Furthermore, in the sand blasting jig for preventing the deformation of the electronic product ultrathin workpiece, one of the positioning pins is a fixed pin and the other is a movable pin, or both of the positioning pins are movable pins;

one end of the fixing pin is inserted into the connecting hole, and the other end of the fixing pin is embedded in the upright post and fixed by a screw; one end of the movable pin is inserted into the connecting hole, the other end of the movable pin is connected with a movable pin assembly arranged on the stand column, and the movable pin assembly can pull the movable pin to reciprocate along the length direction of the profiling supporting body so as to pass in and out the connecting hole.

Furthermore, in the sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product, the connecting hole is a strip-shaped hole extending along the height direction on the end surface of the profiling supporting body, and the movable pin is in a flat shape matched with the strip-shaped hole;

the movable pin assembly comprises a piston, a pressure spring mounting block and a handle, a strip-shaped through hole facing the opposite side upright post is formed in the upright post for mounting the movable pin, the pressure spring mounting block is fixed on the upright post, a pressure spring chamber communicated with the strip-shaped through hole in the upright post is formed in one side, facing the upright post, of the pressure spring mounting block, a through hole is formed in the bottom of the pressure spring chamber, the piston penetrates through the through hole in the bottom of the pressure spring chamber and is connected with the handle, the piston reciprocates in the pressure spring chamber in a fixed direction, the movable pin penetrates through the strip-shaped through hole in the upright post and is connected with the piston, the piston is cylindrical, the pressure spring is sleeved outside the piston, and two ends of the pressure spring are respectively abutted against the movable pin and the bottom of the pressure spring chamber;

the movable pin is pressed into the connecting hole of the profiling support body under the action of the pressure spring, and the handle can pull the piston and the movable pin to further compress the pressure spring so that the movable pin retracts into the upright post.

Further, prevent the sandblast tool of ultra-thin work piece deformation of electronic product in, piston and removable pin integrated into one piece, piston and handle threaded connection, trompil and pore wall set up the internal thread in the tip that the removable pin was kept away from to the piston, set up the external screw thread on the handle.

Furthermore, in the sand blasting jig for preventing the deformation of the electronic product ultrathin workpiece, the connecting hole is a strip-shaped hole extending along the height direction on the end surface of the profiling supporting body;

the fixed pin is the T type, including the head of cuboid form and the flat portion that matches with the bar hole, sets up a position and the direction that the rectangle pit towards the offside stand is used for retraining the fixed pin on the stand of installation fixed pin, the via hole is seted up to the central authorities of pit, the head of fixed pin sets up the screw hole in one side central authorities that deviate from the flat portion, and the head of fixed pin sinks in the pit of stand and through following the screw fixation that the via hole of pit bottom stretched into.

Further, prevent among the sandblast tool of ultra-thin work piece deformation of electronic product, sandblast frame base include a pair of vertical pole and connect in a pair of between the vertical pole with a plurality of the many horizontal poles that the profile modeling supporter corresponds, many the horizontal pole is followed the even interval of length direction of vertical pole is arranged, the horizontal pole perpendicular to the vertical pole, the horizontal pole is located to correspond under the profile modeling supporter, vertical pole and horizontal pole handing-over position department set up the stand.

Further, prevent among the sandblast tool that ultra-thin work piece of electronic product warp, the profile modeling supporter is by the steel preparation, all corners of profile modeling supporter are all fallen into the fillet.

The utility model discloses a prevent sandblast tool that ultra-thin work piece of electronic product warp has following beneficial effect: the utility model can carry out full-profiling inner-contact surface support on the workpiece based on the profiling support body, thereby effectively preventing the workpiece from deforming; and the width of the profiling supporting body refers to the lower tolerance size of the internal height of the workpiece, so that in the process of single-side sand blasting, the inner wall of one side corresponding to the length and width dimensions of the workpiece is attached to the supporting surface of the profiling supporting body, while the inner wall of the other side corresponding to the length and width dimensions of the workpiece is free, so that the force applied to the workpiece is completely absorbed by the profiling supporting body without deformation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without creative efforts according to the provided drawings:

FIG. 1 is a schematic diagram comparing deformation of an electronic product caused by an existing sandblasting scheme;

FIG. 2 is a schematic view of a workpiece structure;

FIG. 3 is a schematic view of a base of the blasting stand according to the first embodiment;

FIG. 4 is a schematic view of the structure of the profiling support of the first embodiment;

fig. 5 is a schematic structural view of a sand blasting jig formed by assembling a sand blasting frame base and a profiling support body in the first embodiment;

FIG. 6 is a schematic view of a workpiece mounted on a blasting jig;

FIG. 7 is a cross-sectional view of a retaining pin according to one embodiment;

FIG. 8 is an expanded view of the retaining pin of the first embodiment;

FIG. 9 is a sectional view of a movable pin according to the first embodiment;

FIG. 10 is an expanded view of the movable pin according to the first embodiment;

fig. 11 is a schematic structural view of a blasting jig according to a second embodiment;

fig. 12 is a schematic view of a blasting method.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Example one

Referring to fig. 2, the workpiece 100 of the present invention is elongated and hollow, the width W and the height H of the workpiece 100 correspond to two end faces, which are just opposite to the pair of insertion holes 101, and the length L and the height H of the workpiece 100 correspond to one side face to form an open window 102 for assembling the workpiece 100 with an external structure. In this embodiment, the workpiece 100 is specifically a frame of an electronic book, and has a length L of 250mm, a width W of 15mm, and a height H of 5mm. A pair of receptacles 101, specifically USB holes, on both end faces. The open window 102 is designed for connecting a frame with an electronic book main body structure, specifically, a 248mm 12mm 3.8mm open window 102 is arranged in the middle of a bottom wall of 5mm 250mm, the inner wall of the workpiece 100 is provided with a plurality of steps, and the surface of the workpiece 100 is subjected to sand blasting by using a conveying sand blasting machine.

Referring to fig. 3 to 5, the sandblasting jig for preventing deformation of an electronic product ultrathin workpiece in this embodiment is used to implement batch sandblasting on a plurality of workpieces 100 in cooperation with a conveying type sandblasting machine after a plurality of workpieces 100 are installed. The conveying sand blasting machine comprises a conveying belt, a sand blasting gun and an air gun. The sandblast jig of this embodiment is installed and is put on the conveyer belt transmission after work piece 100, is sandblasted by the sand blasting gun of fixed setting in the in-process of transmission, and the rifle head is the oscillating sandblast when the sand blasting gun sandblasts. The sand blasting jig comprises a sand blasting frame base 1 and a plurality of profiling supporting bodies 2 which are arranged on the sand blasting frame base 1 and can be plugged into the workpiece 100. The plurality of profile modeling support bodies 2 are arranged in sequence at even intervals, and the arrangement direction is vertical to the length direction of the profile modeling support bodies 2. In this embodiment, only the case where 3 profiling support bodies 2 are provided on the sandblast frame base 1 is illustrated, but the present invention is not limited thereto, and the number of profiling support bodies 2 may be adjusted as necessary.

Referring to fig. 6, the workpiece 100 is reversed on the profiling support 2 through the open window 102, the length L of the workpiece 100 is also parallel to the length L of the profiling support 2, the height H of the workpiece 100 is parallel to the width W of the profiling support 2, and the width W of the workpiece 100 is parallel to the height H of the profiling support 2. The profiling support body 2 is directly contacted with the workpiece 100, the surface of the profiling support body 2 is completely manufactured according to the inner surface appearance of the workpiece 100, the interference with features of convex hulls, steps and the like on the inner wall of the workpiece 100 is avoided, and the full-profiling inner connecting surface support of the workpiece 100 is realized. All corners of the profiling supporting body 2 are all chamfered into round corners, so that the workpiece 100 is prevented from being scratched. The profiling support body 2 is made of steel with better rigidity, and deformation is avoided under the stress condition in the sand blasting process. The width W of the profiling support body 2 refers to the lower tolerance dimension of the internal height H of the workpiece 100, so that in the single-side sand blasting process, the inner wall of one side corresponding to the dimension of the length L and the width W of the workpiece 100 is attached to the supporting surface of the profiling support body 2, while the inner wall of the other side corresponding to the dimension of the length L and the width W of the workpiece 100 is free, so that the force applied to the workpiece 100 is completely absorbed by the profiling support body 2 without deformation.

The main function of the sand blasting frame base 1 is to support the profiling support body 2, and the sand blasting frame base 1 has various specific support modes for the profiling support body 2, in this embodiment, two ends of one profiling support body 2 are supported. Specifically, two side edges of the sand blasting frame base 1 are provided with a plurality of pairs of upright columns 12 corresponding to the plurality of profiling supporting bodies 2, and the end part of each profiling supporting body 2 is supported by one upright column 12, that is, one profiling supporting body 2 is supported by two upright columns 12 at two ends. The two uprights 12 of each pair are perfectly dimensionally identical and symmetrical.

Referring to fig. 3, the sandblasting mount base 1 comprises, in the same horizontal plane: a pair of vertical bars 11a and a plurality of horizontal bars 11b connected between the pair of vertical bars 11a and corresponding to the plurality of profile supporting bodies 2. The plurality of cross bars 11b are uniformly arranged along the length direction of the longitudinal bar 11a at intervals, the cross bars 11b are perpendicular to the longitudinal bar 11a, the cross bars 11b are located right below the profile modeling support body 2, and the vertical columns 12 are arranged at the joint positions of the longitudinal bar 11a and the cross bars 11b to support the end portions of the profile modeling support body 2. The frames and the cross bars 11b are criss-cross to ensure that no excessive sand remains. The size of the sandblasting mount base 1 is determined according to the size of the workpiece 100 and the model of the sandblasting machine.

More specifically, two end faces of the profile support body 2 are provided with connecting holes 21 facing the insertion holes 101, and the connecting holes 21 are strip-shaped holes extending in the height direction on the end face of the profile support body 2. The two connecting holes 21 of the profile support body 2 are assembled with a pair of upright posts 12 on the blasting frame base 1 through a pair of high positioning pins to support the profile support body 2 from both ends.

In this embodiment, one of the positioning pins in a pair is a fixed pin 13 and the other is a movable pin 14, that is, the fixed pin 13 and the movable pin 14 are respectively disposed on the two columns 12 in the same pair. In static state, the appearance of the exposed parts of the fixed pin 13 and the movable pin 14 is completely consistent, and the corners of the pins are all chamfered, so that the pins can be conveniently placed into the connecting holes 21 on the profiling supporting body 2. The fixed pins 13 of the same pair are flush and level with the movable pins 14 at the upright 12. Of course, in other embodiments, both of the positioning pins may be movable pins 14.

Referring to fig. 7-8, the fixing pin 13 is inserted into the connecting hole 21 of the profile support body 2 at one end, and is inserted into the upright post 12 after passing through the insertion hole 101 of the workpiece 100 at the other end and is fixed by the screw 16. Specifically, the fixing pin 13 is T-shaped, and includes a rectangular head 131 and a flat portion 132 matched with the strip-shaped hole, a rectangular pit 121 facing the opposite side column 12 is provided on the column 12 of the mounting fixing pin 13 for restraining the position and direction of the fixing pin 13, a through hole is provided in the center of the pit 121, a screw hole is provided in the center of one side deviating from the flat portion 132 at the head 131 of the fixing pin 13, the head 131 of the fixing pin 13 sinks into the pit 121 of the column 12 and is fixed by a screw 16, and specifically, the screw 16 is screwed in the screw hole extending into the head 131 of the fixing pin 13 from the through hole at the bottom of the pit 121.

Referring to fig. 9-10, one end of the movable pin 14 is inserted into the connecting hole 21, and the other end of the movable pin passes through the insertion hole 101 and is connected to a movable pin assembly 15 mounted on the upright 12, and the movable pin assembly 15 can pull the movable pin 14 to reciprocate along the length direction of the profile supporting body 2.

Specifically, the movable pin assembly 15 includes a piston 151, a pressure spring 152, a pressure spring mounting block 154, and a handle 153. The movable pin 14 is flat and matched with the connecting hole 21. The pressure spring mounting block 154 includes a cylindrical main body portion and two ears facing each other from top to bottom, and the two ears are connected to the outer wall of the main body portion at positions flush with the end portion of the main body portion. The piston 151 is cylindrical and is composed of a cylindrical portion and a U-shaped shank portion connected to the end of the cylindrical portion. The upright 12 on which the movable pin 14 is mounted is provided with a strip-shaped through hole 122 facing the opposite upright 12 and adapted to the movable pin 14. Two ear parts of the pressure spring mounting block 154 are fixed on the column 12 through an upper screw 17 and a lower screw 17, a main body part of the pressure spring mounting block 154 faces one side of the column 12 and is provided with a pressure spring chamber 1541 communicated with the strip-shaped through hole 122 on the column 12, the bottom of the pressure spring chamber 1541 is provided with a through hole, the piston 151 penetrates through the through hole at the bottom of the pressure spring chamber 1541 and is connected with the handle 153, the piston 151 reciprocates in the pressure spring chamber 1541 in a fixed direction, the movable pin 14 penetrates through the strip-shaped through hole 122 on the column 12 and then extends into the pressure spring chamber 1541 to be connected with the piston 151, the pressure spring 152 is sleeved outside the piston 151, one end of the pressure spring 152 abuts against an end face, connected with the piston 151, of the movable pin 14, and the other end of the pressure spring 152 abuts against the bottom of the pressure spring chamber 1541. The movable pin 14 is pressed into the connection hole 21 of the profile support body 2 by the action of the compression spring 152, and the handle 153 can pull the piston 151 and the movable pin 14 to compress the compression spring 152, so that the movable pin 14 retracts into the column 12.

In this embodiment, the piston 151 and the movable pin 14 are integrally formed, i.e., they are a single body, the front part is the movable pin 14, and the rear part is the piston 151. The piston 151 is in threaded connection with the handle 153, an inner hole is formed in the end part, far away from the movable pin 14, of the piston 151, an inner thread is arranged on the hole wall, an outer thread is arranged outside the cylindrical part of the handle 153, and the cylindrical part of the handle 153 is in threaded connection with the piston 151.

The working principle of the embodiment is as follows: the workpiece 100 is reversely buckled on the profiling support body 2, after the workpiece 100 enters the single side of the sand blasting area, sand grains are sprayed to the surface of the workpiece 100, and when strong pressure is generated on the workpiece 100, the inner surface of one side of the workpiece 100 facing the spray gun is tightly attached to the surface of the profiling support body 2 on the same side, the other side is completely free, the impact force of the high-speed sprayed sand grains on the workpiece 100 is completely converted to the profiling support body 2, and the profiling support body 2 is stably supported by the upright post 12, so that the workpiece 100 is not deformed in the whole sand blasting process, and the purpose of preventing the workpiece 100 from deforming is achieved. The most critical of this embodiment is that the width of the profiling support 2 is referenced to the lower tolerance dimension of the internal height of the workpiece 100 and that the blasting is not simultaneous from both sides but from only one side at a time, the non-blasted side providing sufficient tolerance. Because the workpiece 100 is machined with dimensional tolerances, the dummy can only be referenced to the minimum width within the workpiece 100, and when the workpiece 100 is machined with dimensional tolerances, there is a gap between the dummy and the workpiece 100, and if both sides are blasted simultaneously, the workpiece 100 will still deform plastically under the action of strong pressure.

Example two

Referring to fig. 11, the difference between this embodiment and the first embodiment is that the sand blast frame base 1 supports the profile support body 2 in a different way, and in this embodiment, the profile support body 2 is not supported at both ends, but at the bottom. Specifically, the side wall of the bottom of the profiling support body 2 is fixed with the sand blasting frame base 1 through a row of vertical rods 18, the vertical rods 18 are arranged in a row along the length direction of the profiling support body 2, and the vertical rods 18 are perpendicular to the length direction of the profiling support body 2.

It is understood that the features of the first embodiment can be combined with the above-mentioned features of the present embodiment, for example, the two positioning pins in the first embodiment are all changed into the movable pin 14, and then the feature of supporting the bottom row of upright rods 18 is added on the basis of supporting by the movable pin 14 at both ends.

Further preferably, in this embodiment, two end faces of the profiling supporting body 2 are opposite to each other and provided with a connecting hole 21 capable of facing the insertion hole 101, a rubber plug 19 is movably inserted into the connecting hole 21, and the rubber plug 19 can extend out of the insertion hole 101 to prevent the workpiece 100 from falling off.

Based on the two embodiments, we can realize single-side sand blasting, and referring to fig. 12, the sand blasting method includes:

1) Reversely buckling the workpiece 100 on the profiling supporting body 2 according to the downward direction of the open window 102;

if the sand blasting jig of the first embodiment is adopted, the steps are as follows: firstly, a workpiece 100 is sleeved on a profiling support body 2 in a downward direction of an open window 102, and an assembly of the workpiece 100 and the profiling support body 2 is assembled; then, the assembly of the workpiece 100 and the profiling support body 2 is mounted on the locating pin in the direction that the opening window 102 faces downwards, specifically: the connecting hole 21 at one end of the profiling supporting body 2 is aligned and matched with the fixed pin 13, the handle 153 is pulled to retract the movable pin 14 into the upright post 12, the connecting hole 21 at one end of the movable pin 14 of the profiling supporting body 2 is aligned with the movable pin 14, the handle 153 is loosened, and the movable pin 14 slides into the connecting hole 21 of the profiling supporting body 2.

If the sand blasting jig of the second embodiment is adopted, the steps are as follows: firstly, a workpiece 100 is sleeved on a profiling supporting body 2 according to the downward direction of an open window 102; then, the rubber plug 19 is inserted into the coupling holes 21 formed at both ends of the copying support 2.

2) As shown in (a), the sand blasting gun and the air gun are all adjusted to the same side of the sand blasting jig and distributed obliquely above and below the sand blasting jig, and the position and the swing angle of the sand blasting gun are adjusted to ensure that each workpiece 100 is within the effective sand blasting range;

the arrows obliquely above and obliquely below in the drawing indicate the sand blast guns, respectively.

3) Utilize the conveyer belt to drive the sandblast tool and remove, the sandblast rifle once single side sandblast to the work piece 100 of removal, the single side sandblast includes: the spray guns distributed above the inclined part swing downwards to perform sand blasting, and the spray guns distributed below the inclined part swing upwards to perform sand blasting;

4) As shown in (b), the blasting jig is horizontally rotated by 180 degrees and then placed on the conveyor belt again, and one-side blasting is performed again.

5) If the jig of the first embodiment is used, after the sandblasting is completed, the workpiece 100 and the copying support body 2 are taken out of the assembly, and then the copying support body 2 is taken out. If the jig of the second embodiment is adopted, after the sand blasting is completed, the rubber plug 19 is taken out, and then the workpiece 100 is taken out.

To sum up, the utility model discloses a prevent sandblast tool that ultra-thin work piece of electronic product warp has following beneficial effect: the utility model can carry out full-profiling inner contact surface support on the workpiece based on the profiling support body, thereby effectively preventing the workpiece from deforming; and the width of the profiling supporting body refers to the lower tolerance size of the internal height of the workpiece, so that in the process of single-side sand blasting, the inner wall of one side corresponding to the length and width dimensions of the workpiece is attached to the supporting surface of the profiling supporting body, while the inner wall of the other side corresponding to the length and width dimensions of the workpiece is free, so that the force applied to the workpiece is completely absorbed by the profiling supporting body without deformation.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named as a second component, and similarly, a second component may also be named as a first component, without departing from the scope of the present invention.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (10)

1. The utility model provides a prevent sand blasting tool that ultra-thin work piece of electronic product warp for realize a plurality ofly with the cooperation of transport formula sand blasting machine after installing a plurality of work pieces (100) the batch sand blasting of work piece (100), work piece (100) are rectangular shape and inside cavity, two terminal surfaces that the width and the high dimension of work piece (100) correspond just to setting up a pair of jack (101), the length of work piece (100) and a side that the high dimension corresponds form open window (102) in order to be used for work piece (100) and exterior structure equipment, its characterized in that, sand blasting tool includes sand blasting frame base (1) and installs a plurality of profile modeling supporter (2) that can fill in on sand blasting frame base (1) the inside of work piece (100), a plurality of profile modeling supporter (2) are arranged in proper order and the array orientation perpendicular to the length direction of profile modeling supporter (2);

the workpiece (100) is reversely buckled on the profiling support body (2) through the open window (102), the surface of the profiling support body (2) is completely manufactured according to the inner surface topography of the workpiece (100) to realize full profiling inner-contact surface support of the workpiece (100), the width of the profiling support body (2) refers to the lower tolerance size of the inner height of the workpiece (100) so that the inner wall of one side corresponding to the length and width dimensions of the workpiece (100) is attached to the support surface of the profiling support body (2) in the process of single-side sand blasting, and the inner wall of the other side corresponding to the length and width dimensions of the workpiece (100) is free, so that the force applied to the workpiece (100) is completely absorbed by the profiling support body (2) and is not deformed.

2. The sand blasting jig for preventing the deformation of the ultrathin workpieces of electronic products as claimed in claim 1 is characterized in that the bottom side wall of the profiling support body (2) is fixed with the sand blasting frame base (1) through a row of vertical rods (18), the row of vertical rods (18) is arranged along the length direction of the profiling support body (2), and the vertical rods (18) are perpendicular to the length direction of the profiling support body (2).

3. The sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product as claimed in claim 2, characterized in that two end faces of the profiling supporting body (2) are just opposite to connecting holes (21) which can face the jacks (101), a rubber plug (19) is movably inserted into the connecting holes (21), and the rubber plug (19) can extend out of the jacks (101) to prevent the workpiece (100) from falling off.

4. The sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product as claimed in claim 1 or 2, characterized in that a plurality of pairs of upright columns (12) corresponding to the plurality of profiling supporting bodies (2) are arranged on two side edges of the sand blasting frame base (1), two end faces of the profiling supporting bodies (2) are just opposite to connecting holes (21) which can face the insertion holes (101), and the two connecting holes (21) of the profiling supporting bodies (2) and the pair of upright columns (12) on the sand blasting frame base (1) are assembled through a pair of locating pins with equal height so as to support the profiling supporting bodies (2) from two ends.

5. The sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product as claimed in claim 4, characterized in that one of the positioning pins in a pair is a fixed pin (13) and the other is a movable pin (14), or both are movable pins (14);

one end of the fixing pin (13) is inserted into the connecting hole (21), and the other end of the fixing pin is embedded on the upright post (12) and fixed by a screw (16); one end of the movable pin (14) is inserted into the connecting hole (21), the other end of the movable pin is connected with a movable pin assembly (15) installed on the upright post (12), and the movable pin assembly (15) can pull the movable pin (14) to reciprocate along the length direction of the profiling supporting body (2) so as to enter and exit the connecting hole (21).

6. The sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product as claimed in claim 5 is characterized in that the connecting hole (21) is a strip-shaped hole extending along the height direction on the end face of the profiling support body (2), and the movable pin (14) is flat matched with the strip-shaped hole;

the movable pin assembly (15) comprises a piston (151), a pressure spring (152), a pressure spring mounting block (154) and a handle (153), a strip-shaped through hole (122) facing to an opposite side upright post (12) is formed in an upright post (12) for mounting the movable pin (14), the pressure spring mounting block (154) is fixed on the upright post (12) and one side facing to the upright post (12) is provided with a pressure spring chamber (1541) communicated with the strip-shaped through hole (122) in the upright post (12), a through hole is formed in the bottom of the pressure spring chamber (1541), the piston (151) penetrates through the through hole in the bottom of the pressure spring chamber (1541) and is connected with the handle (153), the piston (151) reciprocates in a fixed direction in the pressure spring chamber (1541), the movable pin (14) penetrates through the strip-shaped through hole (122) in the upright post (12) and is connected with the piston (151), the piston (151) is cylindrical, the pressure spring (152) is sleeved outside the piston (151) and two ends of the piston (152) are respectively abutted against the movable pin (14) and the bottom of the pressure spring chamber (1541);

the movable pin (14) is pressed into the connecting hole (21) of the profiling support body (2) under the action of the pressure spring (152), and the handle (153) can pull the piston (151) and the movable pin (14) to further compress the pressure spring (152) so that the movable pin (14) retracts into the upright column (12).

7. The sand blasting jig for preventing the deformation of the ultrathin workpiece of the electronic product as claimed in claim 6 is characterized in that the piston (151) and the movable pin (14) are integrally formed, the piston (151) is in threaded connection with the handle (153), an inner hole is formed in the end part, away from the movable pin (14), of the piston (151), the hole wall of the inner hole is provided with an inner thread, and an outer thread is arranged on the handle (153).

8. The sand blasting jig for preventing the deformation of the electronic product ultrathin workpieces as claimed in claim 5 is characterized in that the connecting holes (21) are strip-shaped holes extending along the height direction on the end surface of the profiling support body (2);

the fixing pin (13) is T type, including head (131) of cuboid form and flat portion (132) that matches with the bar hole, set up a position and the direction that face rectangle pit (121) of offside stand (12) on stand (12) of installation fixing pin (13) and be used for retraining fixing pin (13), the via hole is seted up to the central authorities of pit (121), head (131) of fixing pin (13) set up the screw hole in the one side central authorities that deviate from flat portion (132), and in the pit (121) of stand (12) and through following are sunk in head (131) of fixing pin (13) the screw (16) that the via hole of pit (121) bottom stretched into are fixed.

9. The sand blasting jig for preventing the deformation of the ultrathin electronic product workpiece as claimed in claim 4, wherein the sand blasting frame base (1) comprises a pair of vertical rods (11 a) and a plurality of cross rods (11 b) connected between the pair of vertical rods (11 a) and corresponding to the plurality of profiling supporting bodies (2), the plurality of cross rods (11 b) are uniformly arranged at intervals along the length direction of the vertical rods (11 a), the cross rods (11 b) are perpendicular to the vertical rods (11 a), the cross rods (11 b) are located right below the corresponding profiling supporting bodies (2), and the upright columns (12) are arranged at the joint positions of the vertical rods (11 a) and the cross rods (11 b).

10. The sand blasting jig for preventing the deformation of the ultrathin workpieces of electronic products as claimed in claim 1, characterized in that the profiling supporting body (2) is made of steel, and all corners of the profiling supporting body (2) are all rounded.

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