Watchcase circumference reverse buckle mold stripping structure

Abstract

The utility model discloses a mold stripping structure for an inverted buckle on the periphery of a watchcase, and relates to the technical field of mold structures. The watchcase circumference inverted buckle mold stripping structure comprises a lower mold base, an upper mold base and a lower mold base, an upper die holder; the movable plate is arranged in the lower die holder in a sliding manner; the shovel base is arranged at the top end of the movable plate, and the shovel base penetrates through the interior of the lower die base; the connecting rod is rotationally arranged in the lower die base, and an inclined ejector is fixedly arranged at the top end of the connecting rod; the sliding block is arranged in the lower die base in a sliding mode, and the surface of the sliding block and the surface of the shovel base are arranged in a sliding mode. According to the watchcase circumference reverse buckle mold stripping structure, the movable plate downwards drives the shovel base to move, the shovel base shrinks towards the interior of the lower mold base in the moving process, meanwhile, the sliding block shrinks under the action of the T-shaped block and the sliding groove, the connecting rod drives the pitched roof to contract towards the center under pushing of the abutting spring, and therefore the pitched roof, the sliding block and the shovel base are separated from an inner buckle of a watchcase; rapid demolding of the watchcase is achieved, and the production efficiency of the watchcase is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold structure technology, specifically a watch case perimeter undercut demolding structure. Background Technology

[0002] Watches are a common accessory worn in daily life, primarily serving both decorative and timekeeping purposes. There are many types of watches, including mechanical watches, quartz watches, electronic watches, and smart watches. The cases of electronic watches are usually injection molded.

[0003] Most watch cases nowadays have undercuts around the perimeter. These undercuts are usually machined by CNC after filling, but this method is more troublesome during demolding and can easily damage the watch case when removing the mold, reducing the production efficiency of the watch case. Utility Model Content

[0004] The purpose of this invention is to provide a case perimeter undercut molding structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a watch case perimeter undercut molding structure, comprising: a lower mold base; an upper mold base; a movable plate slidably disposed inside the lower mold base; a shovel base disposed at the top of the movable plate, and the shovel base penetrating the interior of the lower mold base; a connecting rod rotatably disposed inside the lower mold base, and the top of the connecting rod is fixedly provided with an inclined top; a slider slidably disposed inside the lower mold base, and the surface of the slider slidably disposed with the surface of the shovel base; the tops of the shovel base, the slider, and the inclined top are tightly fitted in the initial state.

[0006] Preferably, it further includes: a first rack, fixedly disposed on both sides of the upper mold base; a transmission gear, rotatably disposed on both sides of the lower mold base; and a second rack, fixedly disposed on both sides of the movable plate; the tooth surfaces of the first rack and the second rack are meshed with the outer surface of the transmission gear.

[0007] Preferably, a movable sleeve is fixedly provided at the bottom end of the second toothed rod, and sliding rods are fixedly provided on both sides of the movable plate, with the outer surface of the sliding rods slidingly disposed with the inner surface of the movable sleeve.

[0008] Preferably, multiple sliding sleeves are fixedly arranged on both sides of the lower mold base, and the interior of the multiple sliding sleeves is slidably arranged with the outer surfaces of the first toothed rod and the second toothed rod, respectively.

[0009] Preferably, a T-shaped block is fixedly provided on the outer surface of the shovel base, and a sliding groove is provided on the surface of the slider, with the outer surface of the T-shaped block slidingly disposed in the interior of the sliding groove.

[0010] Preferably, a plurality of compression springs are fixedly provided on the inner surface of the lower mold base, and the other end of the compression springs is fixedly provided to the surface of the connecting rod.

[0011] Preferably, a plurality of positioning frames are fixedly provided on the top surface inside the lower mold base, and the outer surface of the slider is slidably disposed with respect to the inside of the positioning frames.

[0012] This utility model provides a watch case perimeter undercut molding structure, which has the following advantages:

[0013] (1) This utility model uses a movable plate to drive the shovel base to move downwards. During the movement of the shovel base, it retracts into the mold base. At the same time, the slider retracts under the action of the T-block and the slide groove. The connecting rod drives the inclined top to retract towards the center under the push of the pressure spring, so that the inclined top, slider and shovel base are separated from the inner buckle of the watch case, realizing the rapid demolding of the watch case and improving the production efficiency of the watch case.

[0014] (2) By separating the upper mold base and the lower mold base, the upper mold base drives the first toothed rod to move. During the movement of the first toothed rod, the second toothed rod is driven to move together through the action of the transmission gear. After the second toothed rod moves a certain distance, it pushes the movable plate to move downward, thus realizing the automatic demolding effect in the mold separation process and improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the lower mold base in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure between the shovel base, the slider, and the connecting rod in this practical application.

[0018] Figure 4 This is an exploded view of the structure between the shovel base, the slider, and the connecting rod in this practical application.

[0019] Figure 5 This is a schematic diagram illustrating the process of demolding the shovel base, slider, and connecting rod in this practical application.

[0020] In the diagram: 1. Lower mold base; 2. Movable plate; 3. Shovel base; 4. Connecting rod; 5. Slider; 6. T-block; 7. Slide groove; 8. Positioning frame; 9. Compression spring; 10. No. 1 gear; 11. Transmission gear; 12. No. 2 gear; 13. Movable sleeve; 14. Slide rod; 15. Slide sleeve; 16. Upper mold base; 17. Slanted ejector. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution: Referring to 1-5, in this embodiment, a watch case perimeter undercut demolding structure includes: a lower mold base 1; an upper mold base 16; a movable plate 2, slidably disposed inside the lower mold base 1; a shovel base 3, disposed at the top of the movable plate 2, and the shovel base 3 penetrates the interior of the lower mold base 1; a connecting rod 4, rotatably disposed inside the lower mold base 1, and a slanted ejector 17 fixedly disposed at the top of the connecting rod 4; and a slider 5, slidably disposed inside the lower mold base 1, and the surface of the slider 5 slidably disposed with the surface of the shovel base 3; the tops of the shovel base 3, the slider 5, and the slanted ejector 17 are tightly fitted in the mold-closed state. The movable plate 2 can drive the shovel base 3 to move, and the slanted ejector 17 and the slider 5 can retract during the movement of the shovel base 3 to achieve a demolding effect. The connecting rod 4 can also be slidably disposed inside the lower mold base 1 via a drive mechanism, and move upward when the shovel base 3 descends, thereby causing the slanted ejector 17 to retract upward and eject the watch case from the mold.

[0023] It also includes: a first rack 10, fixedly mounted on both sides of the upper mold base 16; a transmission gear 11, rotatably mounted on both sides of the lower mold base 1; and a second rack 12, fixedly mounted on both sides of the movable plate 2. The tooth surfaces of the first rack 10 and the second rack 12 mesh with the outer surface of the transmission gear 11. By setting the transmission gear 11, the second rack 12 can move in the opposite direction through its cooperation with the first rack 10. This allows the movable plate 2 to automatically drive the shovel base 3 to move during the separation of the upper mold base 16 and the lower mold base 1, achieving a reduced driving effect.

[0024] A movable sleeve 13 is fixedly installed at the bottom end of the second toothed rod 12, and sliding rods 14 are fixedly installed on both sides of the movable plate 2. The outer surface of the sliding rod 14 slides against the inner surface of the movable sleeve 13. By setting the movable sleeve 13, the movable plate 2 can be moved only after the upper mold base 16 has moved a certain distance through cooperation with the sliding rod 14. This ensures that the watch case has completely separated from the inside of the upper mold base 16 when demolding, and also increases the gap between the upper mold base 16 and the lower mold base 1, making it easier to pick up the material.

[0025] Multiple sliding sleeves 15 are fixedly installed on both sides of the lower mold base 1. The interior of the multiple sliding sleeves 15 is slidably installed with the outer surface of the first gear 10 and the second gear 12 respectively. By setting the sliding sleeves 15, the first gear 10 and the second gear 12 can be positioned, and the meshing force between the first gear 10 and the second gear 12 and the transmission gear 11 can be guaranteed.

[0026] A T-shaped block 6 is fixedly installed on the outer surface of the shovel base 3, and a sliding groove 7 is opened on the surface of the slider 5. The outer surface of the T-shaped block 6 and the inside of the sliding groove 7 are slidably arranged. By setting the T-shaped block 6 and the sliding groove 7, the slider 5 can be retracted during the movement of the shovel base 3. By setting the T-shaped block 6, the connection strength between the two can be guaranteed.

[0027] Multiple compression springs 9 are fixedly installed on the inner surface of the lower mold base 1. The other end of the compression spring 9 is fixedly installed on the surface of the connecting rod 4. By installing the compression spring 9, a continuous force can be applied to the connecting rod 4, ensuring that the inclined top 17 can retract during the downward movement of the shovel base 3.

[0028] Multiple positioning frames 8 are fixedly installed on the top surface inside the lower mold base 1. The outer surface of the slider 5 is slidably installed with the inside of the positioning frames 8, which can position the slider 5 and improve stability.

[0029] This utility model provides a watch case perimeter undercut molding structure, the specific working principle of which is as follows:

[0030] After the watch case is injection molded, the upper mold base 16 and the lower mold base 1 gradually separate. The upper mold base 16 drives the first gear 10 to move. During the movement of the first gear 10, the second gear 12 is driven to move together through the action of the transmission gear 11. The second gear 12 drives the movable sleeve 13 to move downward. After the movable sleeve 13 moves a certain distance, it abuts against the slide rod 14 and pushes the movable plate 2 to move downward. The movable plate 2 drives the shovel base 3 to move downward. During the movement of the shovel base 3, it retracts into the lower mold base 1. At the same time, the slider 5 retracts under the action of the T-block 6 and the slide groove 7. The connecting rod 4 drives the inclined ejector 17 to retract towards the center under the push of the pressure spring 9, so that the inclined ejector 17, the slider 5 and the shovel base 3 are separated from the inner buckle of the watch case and demolding is completed.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casing perimeter undercut molding structure, characterized in that: include: Lower mold base (1); Upper mold base (16); The movable plate (2) is slidably disposed inside the lower mold base (1); The shovel base (3) is set at the top of the movable plate (2), and the shovel base (3) penetrates the interior of the lower mold base (1); The connecting rod (4) is rotatably disposed inside the lower mold base (1), and the top end of the connecting rod (4) is fixedly provided with an inclined top (17). The slider (5) is slidably disposed inside the lower mold base (1), and the surface of the slider (5) is slidably disposed with the surface of the shovel base (3); The tops of the shovel base (3), the slider (5), and the inclined top (17) fit together tightly in the initial state.

2. The case perimeter undercut molding structure according to claim 1, characterized in that: Also includes: The first toothed rod (10) is fixedly installed on both sides of the upper mold base (16); The transmission gear (11) is rotatably mounted on both sides of the lower mold base (1); The second toothed rod (12) is fixedly installed on both sides of the movable plate (2); The tooth surfaces of both the first rack (10) and the second rack (12) mesh with the outer surface of the transmission gear (11).

3. A bezel undercut mold structure for a watch case according to claim 2, characterized in that: The bottom end of the second toothed rod (12) is fixedly provided with a movable sleeve (13), and the two sides of the movable plate (2) are fixedly provided with sliding rods (14), and the outer surface of the sliding rods (14) slides against the inner surface of the movable sleeve (13).

4. A bezel undercut mold structure for a watch case according to claim 3, characterized in that: Multiple sliding sleeves (15) are fixedly arranged on both sides of the lower mold base (1), and the interior of the multiple sliding sleeves (15) is slidably arranged with the outer surfaces of the first toothed rod (10) and the second toothed rod (12).

5. A bezel undercut mold structure for a watch case according to claim 1, characterized in that: A T-shaped block (6) is fixedly provided on the outer surface of the shovel base (3), and a sliding groove (7) is provided on the surface of the slider (5). The outer surface of the T-shaped block (6) and the inside of the sliding groove (7) are slidably arranged.

6. A bezel undercut mold structure for a watch case according to claim 1, characterized in that: Multiple compression springs (9) are fixedly installed on the inner surface of the lower mold base (1), and the other end of the compression spring (9) is fixedly installed on the surface of the connecting rod (4).

7. The case perimeter undercut molding structure according to claim 1, characterized in that: Multiple positioning frames (8) are fixedly arranged on the top surface inside the lower mold base (1), and the outer surface of the slider (5) slides with the inside of the positioning frames (8).

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