Shielding jig for sand blasting of watch bezel

Abstract

The utility model relates to the technical field of watch manufacturing, in particular to a watch bezel sand blasting shielding jig, which is characterized in that a shielding ring is detachably and fixedly connected to a base and is used for fixing and shielding a watch bezel; a first protrusion is arranged on the side, facing the shielding ring, of the base, a first groove is formed in the position, corresponding to the first protrusion, of the shielding ring, and the first protrusion is sleeved with the first groove, so that the first protrusion of the base is in limiting connection with the first groove of the shielding ring; a second groove is formed in the inner ring side wall of the shielding ring and can be connected to the edge of the outer ring of the watch bezel in a buckled mode, and therefore the watch bezel is in a limiting connection state. In conclusion, the watch bezel can be quickly fixed and shielded during sand blasting operation, the operation is convenient and fast, the positioning is accurate, the watch bezel is not easy to loosen, the production is convenient, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of watch manufacturing, in particular to a bezel sandblasting and shielding jig. Background Art

[0002] Currently, smart watches are becoming more and more popular due to their strong functionality, good decorative effects, and convenient and quick use. Among them, smart watches with metal bezels are beautiful overall and highly ornamental when worn, and are sought after by many users of smart watches.

[0003] Sandblasting is an important step in the bezel cleaning process. Since sandblasting is performed on part of the use surface of the bezel and the non-use surface does not need sandblasting, the non-sandblasting part needs to be masked before sandblasting. Currently, masking tape is usually used for masking, but since the masked part is an irregular plane and the area is relatively small, the masking operation is time-consuming, labor-intensive, and material-consuming.

[0004] At present, when sandblasting parts, high-temperature tape is generally first pasted on the non-sandblasting area of ​​the covering ring part to play a shielding role, and then a sandblasting gun is used to sandblast the area of ​​the covering ring part that needs to be sandblasted. After the sandblasting is completed, the high-temperature tape is torn off. However, this method has disadvantages. The high-temperature tape is soft and not easy to position. It is easy to shift or stick to the side. The cutting and pasting process is manual operation, which increases the labor cost. When the high-temperature tape is torn off, residual glue is easy to appear in the non-sandblasting area. When the high-temperature tape is pasted on the non-sandblasting area of ​​the covering ring part, it cannot be completely adhered, and it is easy to be blown up by the sandblasting gun and overflow sand to the non-sandblasting area. In addition, the high-temperature tape cannot be reused after use, and the waste tape will also have a certain impact on the environment.

[0005] In addition, a Chinese patent document with announcement number CN208496769U discloses a special protective jig for cleaning and sandblasting a covering ring component of a semiconductor tungsten silicon device, which belongs to the field of cleaning and sandblasting protection technology, and includes a jig body, the jig body is a circular ring structure, and its structure includes an outer protective layer and an inner protective layer, the outer protective layer and the inner protective layer are connected, and the outer protective layer is higher than the inner protective layer; the outer protective layer includes an outer covering layer and an outer surrounding ring connected to each other, the inner protective layer includes an intermediate layer and an inner surrounding ring connected to each other, and an inner covering layer is arranged at the bottom of the inner surrounding ring; the outer surrounding ring is connected to the intermediate layer; a positioning groove is formed between the outer surrounding ring, the intermediate layer, and the inner surrounding ring, wherein the lowest plane of the outer surrounding ring is lower than the lowest plane of the intermediate layer.

[0006] However, the sandblasting protection fixture in the above technical solution has a complex structure and is only applicable to the tungsten silicon device covering ring parts of a specific semiconductor device, and cannot be applied to the cleaning process of the watch bezel. Utility Model Content

[0007] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0008] The utility model provides a bezel sandblasting masking jig, comprising a base and a masking ring, wherein the masking ring is detachably fixed to the base, and fixes and masks the bezel; a first protrusion is provided on a side of the base facing the masking ring, and a first groove is provided on the masking ring corresponding to a position of the first protrusion, and the first groove is sleeved on the first protrusion, so that the first protrusion of the base forms a limiting connection state with the first groove of the masking ring; a second groove is provided on the inner ring side wall of the masking ring, and the second groove can be snap-connected to the outer ring edge of the bezel, so as to form a limiting connection state for the bezel.

[0009] As a further solution of the utility model: the side wall of the second groove close to the base side extends a certain distance toward the axis of the shielding ring to form a supporting ring with a certain thickness, and the supporting ring is used to abut the bottom surface of the watch ring and shield the bottom surface.

[0010] As a further solution of the utility model: a convex column is provided at the axis of the base, the convex column protrudes a certain distance in the direction of the shielding ring, and the outer ring of the convex column abuts against the inner ring of the supporting ring, thereby forming a shielding effect on the inner ring of the watch ring.

[0011] As a further solution of the utility model: it also includes a dust plug, which has an insertion end on one side and a pull-out end on the other side, and the boss has an insertion groove at a position corresponding to the insertion end, and the insertion end of the dust plug can be snapped into the insertion groove to form a snap connection, thereby fixing the dust plug to the base; the pull-out end is used to pull out the dust plug.

[0012] As a further solution of the utility model: the shielding ring is provided with a first half ring and a second half ring, the first half ring and the second half ring are respectively detachably fixed to the base, and the first half ring and the second half ring are butt-jointed with each other to form a complete circular ring shape, thereby fixing and shielding the bezel.

[0013] As a further solution of the utility model: the shielding ring is provided with a support foot, the support foot is provided with a bolt hole, and the shielding ring is bolted to the base through the bolt hole, so as to fix the shielding ring on the base.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting the base and the masking ring, various covering surfaces that match the bezel sandblasting masking surface are formed, which can be specifically targeted for the bezel cleaning process. Before the cleaning operation, the bezel only needs to be placed in the second groove, which takes negligible time and is easy and quick to operate. It replaces the use of tape masking, greatly saving materials, manpower and operation time;

[0016] 2. A convex column is also set in the middle of the base, and the convex column is matched with the supporting ring, so that the bezel is buckled in a suitable position, accurate positioning is achieved, it is not easy to loosen, and the accuracy of sand blasting is improved.

[0017] 3. The shielding ring is also arranged in a separable first half ring and a second half ring, so that the two half rings can be moved to both sides by a certain distance, so that the bezel can be conveniently placed on the boss, and then the two half rings are joined together to fix and shield the bezel, which is convenient for installation and improves efficiency.

[0018] Therefore, after the above-mentioned improvements, the utility model can provide a bezel sandblasting masking jig, which can quickly fix and mask the bezel during sandblasting operation, and is easy to operate, accurately positioned, not prone to looseness, easy to produce, and can improve production efficiency.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a structural schematic diagram of the fixture assembly state of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the convex column and the insertion groove of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the fixture of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the first half ring and the second half ring of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the utility model in a separated state.

[0026] The reference numerals and names in the figures are as follows:

[0027] 10 base; 11 first protrusion; 12 boss; 13 insertion groove; 20 shielding ring; 21 first half ring; 22 second half ring; 23 first groove; 24 second groove; 25 supporting ring; 26 support foot; 27 bolt hole; 30 dust plug; 31 insertion end; 32 extraction end. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 5 In an embodiment of the utility model, a bezel sandblasting masking jig comprises a base 10 and a shielding ring 20, wherein the shielding ring 20 is detachably fixed to the base 10 and fixes and masks the bezel; a first protrusion 11 is provided on a side of the base 10 facing the shielding ring 20, and a first groove 23 is provided on the shielding ring 20 corresponding to the position of the first protrusion 11, and the first groove 23 is sleeved on the first protrusion 11, so that the first protrusion 11 of the base 10 forms a limiting connection state with the first groove 23 of the shielding ring 20; a second groove 24 is provided on the inner ring side wall of the shielding ring 20, and the second groove 24 can be snap-connected to the outer ring edge of the bezel, thereby forming a limiting connection state for the bezel.

[0030] Specifically, in order to perform sandblasting on the bezel, it is necessary to perform masking on the parts of the bezel that do not need to be processed, mainly masking the bottom surface, outer ring edge and inner ring edge of the bezel, so as to perform sandblasting on the upper surface of the bezel. By providing the masking ring 20, the bezel can be fixed on the base 10, and the bottom surface of the bezel can be masked by using the supporting ring 25 of the masking ring 20, and the outer ring edge of the bezel can be masked by using the second groove 24. The boss 12 on the base 10 can also be used to abut against the inner ring of the bezel, so that it can perform a masking operation on the inner ring edge of the bezel.

[0031] Secondly, in order to guide and limit the shielding ring 20, a first groove 23 and a first protrusion 11 may be provided, so that the first protrusion 11 and the first groove 23 cooperate with each other to form a limited sliding connection state.

[0032] like Figure 3 and Figure 5As shown, preferably, the side wall of the second groove 24 close to the base 10 extends a certain distance toward the axis of the shielding ring 20 to form a supporting ring 25 with a certain thickness, and the supporting ring 25 is used to abut the bottom surface of the bezel and shield the bottom surface.

[0033] Specifically, in order to support the bezel and shield its bottom surface, a supporting ring 25 can be provided, and the bezel can be supported and shielded by the portion of the supporting ring 25 extending toward the axis of the base 10. It can be understood that the width of the supporting ring 25 can be set according to the width of the bezel so that the bottom surface of the bezel can be completely shielded.

[0034] like Figure 1 and Figure 2 As shown, preferably, a boss 12 is provided at the axis of the base 10, the boss 12 protrudes a certain distance toward the shielding ring 20, and the outer ring of the boss 12 abuts against the inner ring of the supporting ring 25, thereby forming a shielding effect on the inner ring of the bezel.

[0035] Specifically, in order to better fix and position the bezel, a boss 12 may be provided at the center of the base 10 to guide and limit the bezel. It is understandable that the diameter of the boss 12 may be set according to the inner diameter of the bezel so that the bezel can be just sleeved on the boss 12.

[0036] like Figure 1 and Figure 5 As shown, preferably, it also includes a dust plug 30, which has an insertion end 31 on one side and a pull-out end 32 on the other side. The boss 12 has an insertion groove 13 at a position corresponding to the insertion end 31. The insertion end 31 of the dust plug 30 can be inserted into the insertion groove 13 to form a snap connection, thereby fixing the dust plug 30 to the base 10; the pull-out end 32 is used to pull out the dust plug 30.

[0037] Specifically, in order to prevent foreign matter from falling onto the bezel, a dust plug 30 may be provided on the upper portion of the base 10. By providing a corresponding insertion groove 13 using the boss 12, the dust plug 30 may be conveniently fixed on the base 10, thereby facilitating removal and placement, thereby improving production efficiency.

[0038] like Figure 4 and Figure 5 As shown, preferably, the shielding ring 20 is provided with a first half ring 21 and a second half ring 22, and the first half ring 21 and the second half ring 22 are respectively detachably fixed to the base 10, and the first half ring 21 and the second half ring 22 are butt-jointed with each other to form a complete circular ring shape, thereby fixing and shielding the bezel.

[0039] Specifically, in order to place and fix the bezel, the shielding ring 20 can also be set as two half rings, so that they can be separated by a certain distance on the base 10, so as to facilitate the insertion of the bezel. Then, the two half rings are moved to connect with each other to form an integral circular ring state, so as to fix and shield the bezel and achieve the state required for sandblasting.

[0040] Secondly, in order to fix the shielding ring 20 on the base 10, the shielding ring 20 may be provided with a foot 26, and the foot 26 is provided with a bolt hole 27. The shielding ring 20 is bolted to the base 10 through the bolt hole 27, so that the shielding ring 20 is fixed to the base 10. It can be understood that the shielding ring 20 can be provided with four feet 26 respectively, and similarly, the base 10 is also provided with four threaded holes, so that the shielding ring 20 is fixed to the base 10 by bolts.

[0041] When in use, first remove the dust plug 30, then move the two half rings of the shielding ring 20 to the sides by a certain distance to separate them from each other. Then, the bezel can be placed on the boss 12 of the base 10, so that it falls down along the boss 12 and enters the supporting ring 25 of the shielding ring 20, and then the two half rings are pushed toward the middle to connect with each other to form a complete shielding ring 20.

[0042] Then, the shielding ring 20 can be fixed to the base 10 by bolts, and the shielding operation of the bezel can be completed, and it can be put into the corresponding external machine for sandblasting. After the treatment is completed, the dust plug 30 can be inserted into the insertion groove 13 of the base 10 to form a dust-proof shield for the bezel.

[0043] Moreover, after the treatment is completed, the jig can be dismantled again, and after removing the bezel, the jig can be reused to cover and fix another bezel again.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A bezel sandblasting masking jig, characterized in that: The invention comprises a base (10) and a shielding ring (20), wherein the shielding ring (20) is detachably fixed to the base (10) and fixes and shields the bezel; a first protrusion (11) is provided on a side of the base (10) facing the shielding ring (20), and a first groove (23) is provided on the shielding ring (20) corresponding to the position of the first protrusion (11), and the first groove (23) is sleeved on the first protrusion (11), so that the first protrusion (11) of the base (10) forms a limiting connection state with the first groove (23) of the shielding ring (20); a second groove (24) is provided on the inner ring side wall of the shielding ring (20), and the second groove (24) can be snap-connected to the outer ring edge of the bezel, so as to form a limiting connection state with the bezel.

2. A bezel sandblasting masking jig according to claim 1, characterized in that: The side wall of the second groove (24) close to the base (10) extends a certain distance toward the axis of the shielding ring (20) to form a supporting ring (25) with a certain thickness. The supporting ring (25) is used to abut against the bottom surface of the bezel and shield the bottom surface.

3. The bezel sandblasting masking jig according to claim 1, characterized in that: A convex column (12) is provided at the axis of the base (10), the convex column (12) protrudes a certain distance in the direction of the shielding ring (20), and the outer ring of the convex column (12) abuts against the inner ring of the supporting ring (25), thereby forming a shielding effect on the inner ring of the bezel.

4. A bezel sandblasting masking jig according to claim 3, characterized in that: The invention also comprises a dust plug (30), wherein one side of the dust plug (30) is provided with an insertion end (31), and the other side thereof is provided with a pull-out end (32); the convex column (12) is provided with an insertion groove (13) at a position corresponding to the insertion end (31); the insertion end (31) of the dust plug (30) can be snapped into the insertion groove (13) to form a snap connection, thereby fixing the dust plug (30) to the base (10); the pull-out end (32) is used to pull out the dust plug (30).

5. The bezel sandblasting masking jig according to claim 1, characterized in that: The shielding ring (20) is provided with a first half ring (21) and a second half ring (22), wherein the first half ring (21) and the second half ring (22) are respectively detachably fixed to the base (10), and the first half ring (21) and the second half ring (22) are butted against each other to form a complete circular ring shape, thereby fixing and shielding the bezel.

6. The bezel sandblasting masking jig according to claim 1, characterized in that: The shielding ring (20) is provided with a support foot (26), and the support foot (26) is provided with a bolt hole (27). The shielding ring (20) is bolted to the base (10) through the bolt hole (27), so that the shielding ring (20) is fixed to the base (10).

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