Mold for injection molding of spectacle frame
By designing molds for injection molding glasses frames, the problem of lack of special molds in the prior art is solved, efficient hanging of the hanging handle and paint liquid outflow are achieved, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202420883025.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The lack of injection molds specifically used for glasses frames with suspended handles in the prior art, resulting in low efficiency in dipping process and the fixtures need to be frequently cleaned or replaced, increasing costs and production downtime.
A mold for injection molding glasses frame is designed, including a fixed mold and a moving mold. By providing structures such as the first and second cavity, a glasses frame with a hanging handle can be formed, and the hanging handle can be hung on a hanging rod for conveying. and dip coating and disassemble after dip coating to avoid the problem of thick paint layer on the surface of the fixture. At the same time, the injection molded hanging handle is set inclined to facilitate the discharge of the paint liquid.
It improves dip coating efficiency, avoids the increase in cost and production shutdown caused by fixture replacement, ensures product quality, especially the outflow of paint liquid inside the glasses frame, and facilitates subsequent lens installation.
Smart Images
Figure CN222135794U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mold manufacturing, in particular to a mold for injection molding eyeglass frames. Background Art
[0002] The outer surface of the plastic eyeglass frame needs to be sprayed with varnish to increase the hardness of the eyeglass frame to solve the problem of easy breakage of the plastic material. In order to solve the problems of paint waste caused by spray painting, environmental pollution, and oil residues remaining in the air after spray painting that may cause damage to the operator's body, dip coating technology can now be used to paint the plastic eyeglass frame, that is, the eyeglass frame is clamped by a fixture, the entire eyeglass frame is immersed in the paint liquid and then taken out, so as to produce a uniform paint layer on the outer surface of the eyeglass frame.
[0003] However, the clamp also has certain disadvantages during use. First, the clamp is not convenient for automatically clamping the glasses frames one by one, and manual adjustment and confirmation of the clamping position are required; second, the surface of the clamp that is immersed in the paint liquid with the glasses frames for a long time will produce a thicker paint layer. In order to ensure the clamping effect of the glasses frames, the clamp needs to be cleaned or replaced regularly, which not only increases the cost, but also during the cleaning or replacement of the clamp, the dipping process needs to be suspended, affecting production efficiency.
[0004] Therefore, a hanging handle with an integrated structure can be provided on the spectacle frame, and the spectacle frame can be lifted by the hanging handle and transferred to the paint solution for the dipping process. After the dipping is completed, the hanging handle can be disassembled without multiple uses, which is conducive to improving production efficiency. However, there is no mold specifically for injection molding spectacle frames with hanging handles in the prior art. In order to meet the dipping needs of the spectacle frames and improve the dipping efficiency, it is necessary to provide a mold that can injection mold the spectacle frames with hanging handles. Utility Model Content
[0005] The purpose of the utility model is to overcome the technical problems in the prior art that there is no mold specifically for injection molding a spectacle frame with a hanging handle, and to provide a mold for injection molding a spectacle frame, which can injection mold a spectacle frame with a hanging handle, meet the dip coating needs of the spectacle frame, and improve the dip coating efficiency.
[0006] In order to solve the above technical problems, the utility model provides a mold for injection molding eyeglass frames, including a fixed mold and a movable mold, wherein a first mold cavity and a first gate are respectively arranged in the fixed mold, the first mold cavity includes a first cavity for forming, and a second cavity connected to the first cavity, the second cavity is located between the first cavity and the first gate, and a second mold cavity and a second gate are respectively arranged in the movable mold, the second mold cavity includes a third cavity for forming, and a fourth cavity connected to the third cavity, the fourth cavity is located between the third cavity and the second gate.
[0007] As a further improvement measure of the utility model, a first straight section and a first inclined section are respectively provided in the second cavity, the first straight section is located between the first cavity and the first inclined section, and the first straight section and the first cavity are in the same plane.
[0008] As a further improvement measure of the utility model, the fourth cavity is respectively provided with a second straight section and a second inclined section, the second straight section is located between the third cavity and the second inclined section, and the second straight section and the third cavity are in the same plane.
[0009] As a further improvement measure of the present invention, the first straight section and the first inclined section, as well as the second straight section and the second inclined section are connected at an angle.
[0010] As a further improvement measure of the present invention, the second cavity and the fourth cavity are both configured as arc-shaped as a whole.
[0011] As a further improvement measure of the present utility model, the first cavity is respectively provided with a first frame cavity for forming a glasses frame and a first bridge of nose cavity for forming a nose bridge, the end of the second cavity facing one end of the first cavity is connected with the first bridge of nose cavity, the third cavity is respectively provided with a second frame cavity for forming a glasses frame and a second bridge of nose cavity for forming a nose bridge, and the end of the fourth cavity facing one end of the third cavity is connected with the second bridge of nose cavity.
[0012] As a further improvement measure of the utility model, a protrusion is provided in the end of the second cavity away from one end of the first cavity, the outer edge of the protrusion is set to be circular or polygonal, and the outer surface of the protrusion is set to be a first contact surface. When the fixed mold and the movable mold are closed, the first contact surface contacts the bottom surface of the end of the fourth cavity away from one end of the third cavity.
[0013] As a further improvement measure of the utility model, a first baffle and a second baffle are respectively arranged between the inner edge of the end of the second cavity away from one end of the first cavity and the outer edge of the protrusion, and the outer surfaces of the first baffle and the second baffle are both set as second contact surfaces. When the fixed mold and the movable mold are closed, the second contact surfaces are respectively in contact with the bottom surface of the end of the fourth cavity away from one end of the third cavity.
[0014] As a further improvement measure of the present invention, the cross-sections of the second cavity and the fourth cavity are both set to be circular.
[0015] As a further improvement measure of the present invention, the cross-sections of the second cavity and the fourth cavity are both set to be rectangular, and a groove is set in the fourth cavity.
[0016] Compared with the prior art, the beneficial effects of the utility model are: 1. The mold of the utility model can injection mold a glasses frame with a hanging handle, and the glasses frame can be hung on a hanging rod through the hanging handle for transportation and dipping in paint liquid, meeting the dipping needs of the glasses frame. The hanging handle can be disassembled after the dipping is completed, avoiding the problem in the prior art that the clamps with a thicker paint layer on the surface after multiple uses need to be regularly replaced, resulting in increased costs and reduced production efficiency; 2. The hanging handle injection molded by the mold of the utility model is tilted, so that the glasses frame is in a tilted state during the transportation and dipping process, which can facilitate the outflow of paint liquid remaining in the groove inside the glasses frame, ensure the subsequent installation of lenses, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a stereogram of embodiment 1 of the utility model.
[0018] Figure 2 It is the front view of embodiment 1 of the utility model.
[0019] Figure 3 It is an enlarged stereoscopic view of the fixed mold in Example 1 of the utility model.
[0020] Figure 4 It is an enlarged top view of the fixed mold in Example 1 of the utility model.
[0021] Figure 5 It is an enlarged stereoscopic view of the movable mold in Example 1 of the utility model.
[0022] Figure 6 It is an enlarged top view of the movable mold in Example 1 of the utility model.
[0023] Figure 7 It is an enlarged stereoscopic view of the fixed mold in Example 2 of the utility model.
[0024] Figure 8 It is an enlarged stereoscopic view of the movable mold in Example 2 of the utility model.
[0025] Explanation of the accompanying drawings: 1-fixed mold, 2-movable mold, 3-first gate, 4-first cavity, 5-second cavity, 6-second gate, 7-third cavity, 8-fourth cavity, 9-first straight section, 10-first inclined section, 11-second straight section, 12-second inclined section, 13-first frame cavity, 14-first nose bridge cavity, 15-second frame cavity, 16-second nose bridge cavity, 17-protrusion, 18-first contact surface, 19-first baffle, 20-second baffle. DETAILED DESCRIPTION
[0026] The utility model will be further described below in conjunction with the accompanying drawings.
[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0028] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.
[0029] Example 1: Figures 1 to 6 As shown, a mold for injection molding eyeglass frames includes a fixed mold 1 and a movable mold 2, wherein the fixed mold 1 is mounted on a fixed template of an injection molding machine, and the movable mold 2 is mounted on a movable template of the injection molding machine. The fixed mold 1 is provided with a first mold cavity and a first gate 3, respectively, wherein the first mold cavity includes a first cavity 4 for forming the eyeglass frame, and a second cavity 5 connected to the first cavity 4, and the second cavity 5 is located between the first cavity 4 and the first gate 3; the movable mold 2 is provided with a second mold cavity and a second gate 6, respectively, wherein the second mold cavity includes a third cavity 7 for forming the eyeglass frame, and a fourth cavity 8 connected to the third cavity 7, and the fourth cavity 8 is located between the third cavity 7 and the second gate 6. In this embodiment, the cross-sections of the second cavity 5 and the fourth cavity 8 are both set to be circular.
[0030] During injection molding, the fixed mold 1 and the movable mold 2 are closed to form a pouring system and a cavity, that is, the first cavity 4 in the first cavity and the third cavity 7 in the second cavity are combined to form a first cavity corresponding to the eyeglass frame, and the second cavity 5 in the first cavity and the fourth cavity 8 in the second cavity are combined to form a second cavity corresponding to the hanging handle of the eyeglass frame. The first cavity is connected to the second cavity, so that the eyeglass frame and the hanging handle are an integrated injection molding structure, which ensures the connection strength between the two and improves work efficiency. After the injection molding is completed and the plastic is cooled and formed, the fixed mold 1 and the movable mold 2 are separated, and the prepared eyeglass frame with the hanging handle can be taken out. The hanging handle can be used to hang the eyeglass frame on the hanging rod for transportation, so that the eyeglass frame can be immersed in the paint liquid for the dipping process.
[0031] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, in order to realize the connection between the hanging handle and the hanging rod, a protrusion 17 is provided in the end of the second cavity 5 away from the end of the first cavity 4, and the outer edge of the protrusion 17 is set to be circular or polygonal. If it is a polygon, it can be a triangle, quadrilateral, pentagon or hexagon. The outer surface of the protrusion 17 is set to be a first contact surface 18. When the fixed mold 1 and the movable mold 2 are closed, the first contact surface 18 contacts the bottom surface of the end of the fourth cavity 8 away from the end of the third cavity 7. By providing the protrusion 17, an annular cavity can be formed at the end of the second cavity 5 away from the end of the first cavity 4, so that the end of the hanging handle formed by injection molding has a through hole for the hanging rod to pass through, and the inner edge of the through hole is a circle or a polygon such as a triangle, quadrilateral, pentagon or hexagon. As long as it corresponds to the outer edge shape of the hanging rod, it plays a clamping role between the two, limits the position of the hanging handle on the hanging rod, and at the same time, it can prevent the glasses frame from shaking left and right during the transportation and immersion of the paint liquid, ensuring the immersion effect.
[0032] A first baffle 19 and a second baffle 20 are respectively arranged between the inner edge of the end of the second cavity 5 away from the first cavity 4 and the outer edge of the protrusion 17. The outer surfaces of the first baffle 19 and the second baffle 20 are both arranged as second contact surfaces. When the fixed mold 1 and the movable mold 2 are closed, the second contact surfaces are respectively in contact with the bottom surface of the end of the fourth cavity 8 away from the third cavity 7. By arranging the first baffle 19 and the second baffle 20, an opening can be formed at the outer edge of the through hole at the end of the hanging handle, and the opening is connected to the through hole. The size of the through hole can be adjusted within a certain range to expand the through hole, making it easier to insert the hanging rod into the through hole, thereby achieving the purpose of improving work efficiency.
[0033] like Figures 3 to 6 As shown, the first cavity 4 is provided with a first frame cavity 13 for forming a spectacle frame and a first bridge of nose cavity 14 for forming a nose bridge, and the end of the second cavity 5 facing one end of the first cavity 4 is connected to the first bridge of nose cavity 14; the third cavity 7 is provided with a second frame cavity 15 for forming a spectacle frame and a second bridge of nose cavity 16 for forming a nose bridge, and the end of the fourth cavity 8 facing one end of the third cavity 7 is connected to the second bridge of nose cavity 16. This arrangement allows the end of the hanging handle formed after injection molding to be connected to the bridge of the nose of the spectacle frame, that is, located in the middle of the spectacle frame. Therefore, during the process of conveying and dipping the paint liquid, the balance between the two ends of the spectacle frame, that is, the two spectacle frames, can be ensured, so that the spectacle frame as a whole is in a horizontal state, thereby ensuring the dipping effect.
[0034] The second cavity 5 is provided with a first straight section 9 and a first inclined section 10, respectively. The first straight section 9 is located between the first cavity 4 and the first inclined section 10, and the first straight section 9 and the first cavity 4 are in the same plane; the fourth cavity 8 is provided with a second straight section 11 and a second inclined section 12, respectively. The second straight section 11 is located between the third cavity 7 and the second inclined section 12, and the second straight section 11 and the third cavity 7 are in the same plane. In this embodiment, the first straight section 9 and the first inclined section 10, as well as the second straight section 11 and the second inclined section 12 are connected at an angle. In this way, a hanging handle with a straight section and an inclined section can be injection molded, and the straight section of the hanging handle is connected to the eyeglass frame, and the through hole is located on the inclined section of the hanging handle.
[0035] After the hanging handle is hung on the hanging rod, the position of the through hole on the hanging rod is restricted by clamping, so that the axis of the through hole is perpendicular to the axis of the hanging rod. Therefore, the inclined section of the hanging handle will be in a vertical state, while the straight section of the hanging handle and the glasses frame will be in an inclined state, so as to facilitate the outflow of the paint liquid remaining in the groove inside the glasses frame, facilitate the subsequent installation of the lenses, and improve the product quality.
[0036] Example 2: Figure 7 and Figure 8 As shown, this embodiment is substantially the same as embodiment 1, except that, in this embodiment, in order to solve the problem of the paint liquid being discharged from the groove of the eyeglass frame, the second cavity 5 and the fourth cavity 8 are both set to be arc-shaped as a whole, so that the hanging handle formed after injection molding is arc-shaped as a whole, to ensure that after the hanging handle is hung on the hanging rod, the eyeglass frame can be in a tilted state, so as to facilitate the outflow of the paint liquid remaining in the groove inside the eyeglass frame.
[0037] The cross-sections of the second cavity 5 and the fourth cavity 8 are both set to be rectangular, which can be square or rectangular. A groove is set in the fourth cavity 8 to form a reinforcing rib on the hanging handle after injection molding to increase the structural strength of the hanging handle.
[0038] The above describes the implementation mode of the utility model in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation mode. For ordinary technicians in this field, several modifications and improvements can be made without departing from the present invention, and these should also be regarded as belonging to the protection scope of the present utility model.
Claims
1. A mold for injection molding a spectacle frame, comprising a fixed mold (1) and a movable mold (2), It is characterized in that The fixed mold (1) is provided with a first mold cavity and a first gate (3), the first mold cavity comprises a first cavity (4) for forming a spectacle frame, and a second cavity (5) connected to the first cavity (4), the second cavity (5) is located between the first cavity (4) and the first gate (3), and the movable mold (2) is provided with a second mold cavity and a second gate (6), the second mold cavity comprises a third cavity (7) for forming a spectacle frame, and a fourth cavity (8) connected to the third cavity (7), the fourth cavity (8) is located between the third cavity (7) and the second gate (6).
2. The mold for injection molding eyeglass frames according to claim 1, It is characterized in that A first straight section (9) and a first inclined section (10) are respectively arranged in the second cavity (5); the first straight section (9) is located between the first cavity (4) and the first inclined section (10); and the first straight section (9) and the first cavity (4) are located in the same plane.
3. The mold for injection molding eyeglass frames according to claim 2, It is characterized in that A second straight section (11) and a second inclined section (12) are respectively arranged in the fourth cavity (8); the second straight section (11) is located between the third cavity (7) and the second inclined section (12); and the second straight section (11) and the third cavity (7) are located in the same plane.
4. The mold for injection molding eyeglass frames according to claim 3, It is characterized in that The first straight section (9) and the first inclined section (10), as well as the second straight section (11) and the second inclined section (12), are connected at an angle.
5. The mold for injection molding eyeglass frames according to claim 1, It is characterized in that The second cavity (5) and the fourth cavity (8) are both arranged in an arc shape as a whole.
6. The mold for injection molding of eyeglass frames according to any one of claims 4 or 5, It is characterized in that The first cavity (4) is provided with a first frame cavity (13) for forming a spectacle frame and a first bridge of nose cavity (14) for forming a nose bridge, respectively; the end of the second cavity (5) facing one end of the first cavity (4) is connected to the first bridge of nose cavity (14); the third cavity (7) is provided with a second frame cavity (15) for forming a spectacle frame and a second bridge of nose cavity (16) for forming a nose bridge, respectively; the end of the fourth cavity (8) facing one end of the third cavity (7) is connected to the second bridge of nose cavity (16).
7. The mold for injection molding eyeglass frames according to claim 6, It is characterized in that A protrusion (17) is provided in an end portion of the second cavity (5) away from the first cavity (4); the outer edge of the protrusion (17) is provided in a circular or polygonal shape; the outer surface of the protrusion (17) is provided in a first contact surface (18); when the fixed mold (1) and the movable mold (2) are closed, the first contact surface (18) contacts the bottom surface of the end portion of the fourth cavity (8) away from the third cavity (7).
8. The mold for injection molding eyeglass frames according to claim 7, It is characterized in that A first baffle (19) and a second baffle (20) are respectively arranged between the inner edge of the end of the second cavity (5) away from the first cavity (4) and the outer edge of the protrusion (17); the outer surfaces of the first baffle (19) and the second baffle (20) are both arranged as second contact surfaces; when the fixed mold (1) and the movable mold (2) are closed, the second contact surfaces are respectively in contact with the bottom surface of the end of the fourth cavity (8) away from the third cavity (7).
9. The mold for injection molding eyeglass frames according to claim 8, It is characterized in that The cross-sections of the second cavity (5) and the fourth cavity (8) are both circular.
10. The mold for injection molding eyeglass frames according to claim 8, It is characterized in that The cross-sections of the second cavity (5) and the fourth cavity (8) are both arranged to be rectangular, and a groove is arranged in the fourth cavity (8).