Nozzle supporting clamp for watch bottom shell

Abstract

The utility model discloses a mouth support clamp for a watch bottom shell, which relates to the technical field of watch auxiliary preparation, and comprises an internal shrinkage clamping type mouth support and an internal shrinkage clamping degree adjusting sleeve, and the internal shrinkage clamping type mouth support comprises a bottom fixing column and a chuck; the internal shrinkage clamping degree adjusting sleeve is provided with a stabilizing part and a clamping degree adjusting part; the chuck comprises at least two supporting petals, the bottoms of the supporting petals are connected with the bottom fixing column through elastic connecting wings, and clamping grooves and positioning grooves are formed in the tops of the supporting petals. Inward-contracting clamping degree adjusting inclined faces are formed on the outer side faces of the supporting petals, abutting matching inclined faces are formed on the inner side faces of the clamping degree adjusting parts, and under the condition that the watch bottom shell is placed in the clamping grooves and the positioning grooves, the clamping degree adjusting parts and the clamping heads can slide mutually by moving the stabilizing parts up and down. Under the action of the internal shrinkage clamping degree adjusting inclined plane and the abutting matching inclined plane, the plurality of supporting petals can be mutually clamped to form clamping of the watch bottom shell; and the bottom shell does not need to be manually grasped when the watch bottom shell is polished.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary preparation of watches, in particular to a nozzle support clamp for a bottom shell of a watch. Background Art

[0002] The main structure of a watch includes movement, case, strap, dial, bottom case (also called back cover), mirror, crown, bezel, lugs, etc. At present, the watch cases (case and bottom case) on the market are all produced by casting. The watch cases produced by casting have low precision and cannot meet the production of watch cases with high dimensional accuracy requirements. Therefore, the watch cases need to be polished after casting. However, the traditional watch case polishing process is to polish the case directly by hand. The hand-holding strength is limited and it is often impossible to hold it firmly, resulting in low yield rate and production efficiency of polished watch cases, difficult quality control, low safety performance, and potential safety hazards. Operators are easily injured during polishing and have a high risk of being scratched by grinding wheels. Therefore, clamps for assisting in fixing watch cases have gradually emerged.

[0003] For example, the Chinese invention "processing fixture" with announcement number CN110153747B uses a support nozzle that can be supported outward to tighten the watch shell, and an additional positioning guide block to position the lugs on the watch shell to prevent the watch shell from rotating.

[0004] Or as in the Chinese utility model "a watch case polishing fixture" with announcement number CN220051370U, the watch case is tightened by a fixture support nozzle that can be stretched, and the fixture support nozzle and the fixture cover cooperate with each other to complete the clamping and limiting of the watch case.

[0005] The above two clamps for holding the watch case both require the watch case to have a through hole that can accommodate the passage of the nozzle, that is, in fact, the above two clamps are mainly used to hold the watch case, and are not applicable when a bottom case "does not have a through hole that can accommodate the passage of the nozzle" is needed. Therefore, it is necessary to develop a clamp that can hold the bottom case "does not have a through hole that can accommodate the passage of the nozzle", so that it does not need to manually grasp the bottom case during polishing. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a support nozzle clamp for a watch bottom case, the watch bottom case includes a disc-shaped main body or a disc-like main body, and a lug arranged on the main body, the support nozzle clamp includes a vertically arranged inward-retracted clamping type support nozzle, including a bottom fixed column and a clamping head arranged on the top of the bottom fixed column; an inward-retracted clamping tightness adjustment sleeve, comprising a stabilizing portion vertically slid on the bottom fixed column, and a clamping tightness adjustment portion vertically slid on the clamping head; wherein the clamping head includes at least two supporting petals, a clamping retention gap is formed between the supporting petals, the bottom of the supporting petal is connected to the top of the bottom fixed column by an elastic connecting wing, the top of the supporting petal is formed with a clamping groove for accommodating the main body of the watch bottom case, and is formed with a positioning groove corresponding to the lug of the watch bottom case; an inward-retracted clamping tightness adjustment inclined surface is formed on the outer side surface of the supporting petal, and a tight-fitting inclined surface matching the inward-retracted clamping tightness adjustment inclined surface is formed on the inner side surface of the clamping tightness adjustment portion.

[0008] As a further solution of the utility model: the tight-fitting inclined surface is gradually inclined outward from bottom to top.

[0009] As a further solution of the utility model: a first connecting groove is horizontally penetrated on the bottom fixed column, and the first connecting groove extends along the vertical direction on the bottom fixed column to form a fixed-distance slide groove; a second connecting groove is horizontally penetrated on the stabilizing part, and the second connecting groove is connected to a limiting slide rod which vertically slides with the fixed-distance slide groove.

[0010] As a further solution of the utility model: the horizontal ends of the limit slide bar are located outside the stabilizing portion, and the horizontal ends of the limit slide bar have locking portions for limiting the limit slide bar from escaping from the fixed-distance slide groove.

[0011] As a further solution of the utility model: a plurality of buffer grooves extending from top to bottom are formed on the clamping degree adjustment part, and the plurality of buffer grooves enable the clamping degree adjustment part to form a plurality of clamping petals.

[0012] Compared with the prior art, the beneficial effects of the present technical solution are as follows: when the stabilizing portion is fixed and the watch bottom case is placed in the clamping groove or the positioning groove, the clamping adjustment portion and the chuck can be made to slide relative to each other by moving the bottom fixing column up and down; or when the bottom fixing column is fixed and the watch bottom case is placed in the clamping groove or the positioning groove, the stabilizing portion can be made to slide relative to the chuck by moving the stabilizing portion up and down; under the action of the inward-retracted clamping adjustment bevel and the tight-fitting bevel, a plurality of support petals can be clamped close to each other to clamp the watch bottom case; thereby eliminating the need to manually grasp the watch bottom case when polishing the watch bottom case.

[0013] 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

[0014] 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.

[0015] Figure 1 It is a structural schematic diagram of a watch bottom case to which the utility model is applied;

[0016] Figure 2 It is a schematic diagram of the application of the nozzle support fixture and the bottom shell of a watch of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the utility model;

[0018] Figure 4 It is a structural sectional view of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the inwardly contracted clamping type support nozzle in the utility model.

[0020] The corresponding reference numerals in the accompanying drawings are described as follows:

[0021] Watch bottom case-1, watch body-101, watch lugs-102,

[0022] Support nozzle fixture-2,

[0023] Inward-retracting clamping nozzle-21,

[0024] Bottom fixed column-211, clamp-212, fixed distance slide-2111, support flap-2121, elastic connecting wing-2122, clamping groove-2123, positioning groove-2124, retracted clamping tightness adjustment slope-2125,

[0025] Inwardly retracted clamping degree adjustment sleeve 22, stabilizing portion 221, clamping degree adjustment portion 222, limiting slide bar 2211, locking portion 2212, abutting matching inclined surface 2221, buffer groove 2222, clamping flap 2223. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 A support jaw clamp is used to clamp and hold the bottom case of a watch.

[0028] like Figure 1 As shown, the watch bottom case 1 includes a disc-shaped body 101 or a disc-like body, and lugs 102 arranged on the body 101 . The lugs 102 have two groups of lugs arranged on two opposite sides of the body 101 .

[0029] The nozzle holder 2 includes an inward-retracting clamping degree adjustment sleeve 22 and a vertically arranged inward-retracting clamping nozzle 21. The inward-retracting clamping nozzle 21 includes a bottom fixing column 211 and a clamping head 212 arranged on the top of the bottom fixing column 211. The inward-retracting clamping degree adjustment sleeve 22 has a stabilizing portion 221 vertically slidably mounted on the bottom fixing column 211, and a clamping degree adjustment portion 222 vertically slidably mounted on the clamping head 212. The clamping degree adjustment portion 222 is connected to the top of the stabilizing portion 221.

[0030] The clamp 212 includes at least two support petals 2121, and a clamping gap is formed between the support petals 2121 and other support petals to ensure that the support petals 2121 can be clamped close to each other. The bottom of the support petal 2121 is connected to the top of the bottom fixing column 211 through an elastic connecting wing 2122. The top of the support petal 2121 is formed with a clamping groove 2123 for accommodating the body 101 of the watch bottom case, and a positioning groove 2124 corresponding to the lug 102 of the watch bottom case. The positioning groove 2124 is used to prevent the watch bottom case from rotating when the support petal 2121 clamps the watch bottom case.

[0031] like Figure 2 , 3 As shown, there are four supporting petals, two of which are opposite to each other and have positioning grooves 2124.

[0032] An inwardly retracted clamping degree adjustment inclined surface 2125 is formed on the outer side surface of the support petal 2121 , and a tightly fitting inclined surface 2221 that cooperates with the inwardly retracted clamping degree adjustment inclined surface 2125 is formed on the inner side surface of the clamping degree adjustment portion 222 .

[0033] After the stabilizing part 221 is fixed and the watch bottom case 1 is placed in the clamping groove 2123 and the positioning groove 2124, the clamping degree adjusting part 222 and the clamp head 212 can slide against each other by moving the bottom fixing column 211 up and down; or after the bottom fixing column 211 is fixed and the watch bottom case 1 is placed in the clamping groove 2123 and the positioning groove 2124, the stabilizing part 221 can slide against each other by moving the stabilizing part 221 up and down. Under the action of the retracted clamping degree adjusting inclined surface 2125 and the tight fitting inclined surface 2221, the multiple support petals 2121 can be clamped close to each other to clamp the watch bottom case 1; so that when the watch bottom case 1 is polished, there is no need to manually grasp the bottom case.

[0034] like Figure 4 , 5 As shown, the tight-fitting inclined surface 2221 is gradually inclined outward from bottom to top. When clamping is required, the stabilizing portion 221 is moved upward or the bottom fixing column 211 is moved downward to push the supporting petals 2121 closer to each other.

[0035] After the stabilizing portion 221 is moved downward or the bottom fixing column 211 is moved upward, the supporting petals 2121 can move away from each other under the elastic action of the elastic connecting wings 2122, so that the clamping of the watch bottom case 1 is eliminated, so that the polished watch bottom case 1 can be taken out easily.

[0036] In this embodiment, a first connecting groove is horizontally penetrated on the bottom fixed column 211, and the first connecting groove extends along the vertical direction on the bottom fixed column 211 to form a fixed-distance slide groove 2111; a second connecting groove is horizontally penetrated on the stabilizing portion 221, and the second connecting groove is connected to a limiting slide rod 2211 that vertically slides with the fixed-distance slide groove 211.

[0037] Preferably, the horizontal ends of the limit slide bar 2211 are located outside the stabilizing portion 221, and the horizontal ends of the limit slide bar 2211 have locking portions 2212 for limiting the limit slide bar 2211 from escaping from the fixed distance slide slot 2111. On the one hand, it can form a sliding limit to ensure the clamping amount, and on the other hand, it can prevent the inward clamping degree adjustment sleeve 22 from accidentally detaching from the inward clamping type support nozzle 21.

[0038] In some embodiments, the clamping degree adjustment part 222 is formed with a plurality of buffer grooves 2222 extending from top to bottom, and the plurality of buffer grooves enable the clamping degree adjustment part to form a plurality of clamping petals 2223. The buffer grooves 2222 enable the clamping degree adjustment part to have a certain elastic outward expansion characteristic. In the case where the limit slide bar is used for sliding limit to ensure the clamping amount, the design of the buffer groove 2222 can avoid deformation caused by clamping when there are too many spurs on the surface of the bottom shell of the watch.

[0039] 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 essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, 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 be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A support fixture for a watch bottom case, the watch bottom case comprising a disc-shaped body or a disc-like body, and lugs arranged on the body, characterized in that: Support nozzle fixture includes A vertically arranged inwardly retracted clamping support nozzle includes a bottom fixing column and a clamping head arranged on the top of the bottom fixing column; The retracted clamping tightness adjustment sleeve has a stabilizing portion that vertically slides on the bottom fixed column, and a clamping tightness adjustment portion that vertically slides on the clamping head; The chuck includes at least two supporting petals, a clamping retention gap is formed between the supporting petals, the bottom of the supporting petal is connected to the top of the bottom fixing column through an elastic connecting wing, and the top of the supporting petal is formed with a clamping groove for accommodating the main body of the watch bottom case, and a positioning groove corresponding to the lug of the watch bottom case; An inwardly contracted clamping degree adjustment inclined surface is formed on the outer side surface of the support petal, and a tightly fitting inclined surface matching with the inwardly contracted clamping degree adjustment inclined surface is formed on the inner side surface of the clamping degree adjustment portion.

2. A support fixture for a watch bottom case according to claim 1, characterized in that: The tight-fitting inclined surface is gradually inclined outward from bottom to top.

3. A support fixture for a watch bottom case according to claim 1 or 2, characterized in that: A first connecting groove is horizontally penetrated on the bottom fixing column, and the first connecting groove extends along the vertical direction on the bottom fixing column to form a fixed distance sliding groove; The stabilizing portion is horizontally penetrated with a second communicating groove, and the second communicating groove is connected with a limiting sliding rod which vertically slides with the fixed-distance sliding groove.

4. A support fixture for a watch bottom case according to claim 3, characterized in that: The two horizontal ends of the limiting slide bar are located outside the stabilizing portion, and the two horizontal ends of the limiting slide bar are provided with locking portions for limiting the limiting slide bar from escaping from the fixed-distance slide groove.

5. A support fixture for a watch bottom case according to claim 3, characterized in that: The clamping degree adjusting part is formed with a plurality of buffer grooves extending from top to bottom, and the plurality of buffer grooves enable the clamping degree adjusting part to form a plurality of clamping petals.

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