Glasses rear frame production mold

Abstract

The utility model discloses a spectacle rear frame production mould, which comprises a female mould, a male mould, a female mould core assembly and a male mould core assembly, when the male mould and the female mould are closed, a cavity of a spectacle rear frame is formed in the male mould core assembly and the female mould core assembly, an inclined ejector rod is arranged in the female mould core assembly, a convex circle is arranged on the outer side surface of the inclined ejector rod, and a convex groove is formed in the convex circle. The female mold core assembly comprises a first female mold core plate, a cavity and an inclined groove allowing an inclined ejector rod to penetrate through are formed in the first female mold core plate, a second female mold core plate and a third female mold core plate are sequentially arranged in the cavity, and gaps are formed between the second female mold core plate and the bottom wall of the cavity and between the third female mold core plate and the bottom wall of the cavity; according to the structure, through the arrangement of the angle ejector rod, the angle ejector rod can move along the inclined groove during demolding, and then the convex circle is driven to move horizontally, so that when the angle ejector rod retracts outwards, the convex circle part of the angle ejector rod does not cause strain damage to the groove in the rear frame of the glasses, and the safety of the glasses is improved. Therefore, the yield of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to molds for producing eyeglass back frames. Background Technology

[0002] In the eyewear manufacturing industry, the back frame is a crucial component of eyeglasses. It must not only fit snugly against the lenses but also ensure the wearer's comfort and stability. Currently, during injection molding of eyeglass back frames, the concave hemispherical structure in the middle of the back frame, coupled with the existing one-piece slider, makes it easy for this part of the product structure to be damaged during demolding as the slider retracts, resulting in a decrease in product yield. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a production mold for the back frame of glasses that will not cause damage to the structure of the back frame of glasses during mold opening.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a mold for producing the back frame of glasses, including a female mold and a male mold, wherein a female mold core assembly is provided in the female mold and a male mold core assembly is provided in the male mold. When the male mold and the female mold are closed, the male mold core assembly and the female mold core assembly form a cavity for the back frame of glasses.

[0005] The mold core assembly includes a slanted ejector rod. The outer surface of the slanted ejector rod extending into the cavity has a convex circle that mates with a groove in the rear frame of the eyeglasses. The mold core assembly includes a first mold core plate. A cavity is formed on the side of the first mold core plate away from the cavity. A slanted groove for the slanted ejector rod to pass through is provided within the first mold core plate. A second mold core plate and a third mold core plate are sequentially arranged within the cavity. The second and third mold core plates are fixedly connected. A gap is provided between the female mold core plate and the bottom wall of the cavity. A horizontal limiting groove is provided between the second and third female mold core plates. A limiting block is provided at the other end of the inclined ejector rod. The limiting block is located in the horizontal limiting groove. It also includes a nylon opener and closer. The two ends of the nylon opener and closer are respectively connected to the third female mold core plate and the male mold core assembly. When the male mold and the female mold are separated, the nylon opener and closer pulls the third female mold core plate to move towards the male mold, so that the end of the inclined ejector rod that extends into the cavity moves horizontally under the inclined groove.

[0006] Furthermore, it also includes a female mold slider assembly connected to the female mold. The forming end of the female mold slider assembly extends into the cavity. When the male mold and the female mold separate, the female mold slider assembly moves outward away from the male mold.

[0007] Furthermore, the female mold slider assembly includes a first female mold slider assembly located at both ends of the cavity along the X-axis direction;

[0008] The first master mold slider assembly includes a first slider, a second slider, and a first drive block arranged sequentially from the inside to the outside. The second slider and the first drive block are fixedly connected. The first drive block is used to drive the second slider to retract. The end of the first slider away from the second slider is the forming end. It also includes an ejector pin. One end of the ejector pin is fixedly connected to the second slider. The other end of the ejector pin extends out of the forming end of the first slider. It also includes a pull stud for connecting the first slider and the second slider.

[0009] During operation, the second slider first pulls the ejector pin backward a certain distance, and then the pull pin pulls the first slider backward.

[0010] Furthermore, the pull stud includes a first connecting segment, a second connecting segment, and a third connecting segment arranged sequentially. The first connecting segment is fixedly connected to the second slider. The cross-sectional diameter of the second connecting segment is smaller than that of the third connecting segment. The first slider is provided with a first through groove segment and a second through groove segment. A flange for blocking the third connecting segment is provided at the connection between the first through groove segment and the second through groove segment. After the third connecting segment is blocked at the flange, the second slider drives the first slider to move backward together.

[0011] Furthermore, the female mold slider assembly includes a second female mold slider assembly located at both ends of the cavity along the Y-axis direction;

[0012] The second slider assembly includes a third slider and a second drive block, which are fixedly connected. The end of the third slider away from the second drive block is the forming end, and the second drive block is used to drive the third slider to retract.

[0013] Furthermore, it also includes a mold slider assembly connected to the mold, the mold slider assembly including a fourth slider and a third drive block for driving the fourth slider to move backward, the fourth slider being fixedly connected to the third drive block, and the end of the fourth slider away from the third drive block being the molding end.

[0014] Furthermore, the first drive block, the second drive block, and the third drive block all include a drive block body, which is provided with an inclined groove and also includes an inclined rod. One end of the inclined rod extends into the inclined groove, and the other end of the inclined rod is fixedly connected to the female mold or the male mold.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this structure, the inclined ejector rod is designed so that it can move along the inclined groove during demolding, thereby driving the convex circle to move horizontally. As a result, when the inclined ejector rod is withdrawn, the convex circle of the inclined ejector rod will not cause damage to the groove inside the back frame of the glasses, thus improving the yield rate of the product.

[0017] 2. In this structure, the first female mold slider assembly allows the ejector pins to retract first during demolding, and then the first slider to retract, thereby reducing the pulling force on the product when the entire slider retracts, and thus improving the product yield. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the eyeglass back frame production mold according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the internal structure of the eyeglass back frame production mold according to an embodiment of this application.

[0020] Figure 3 This is a top view of the internal structure of the eyeglass back frame production mold according to an embodiment of this application.

[0021] Figure 4 for Figure 3 The sectional view at point AA.

[0022] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the pull stud structure of the first female mold slider assembly.

[0024] Figure 7 for Figure 3 The sectional view at point BB.

[0025] Figure 8 for Figure 3 The sectional view at point CC.

[0026] The components in the diagram are labeled as follows: Female mold 1, Male mold 2, Female mold core assembly 3, Male mold core assembly 4, Angled ejector rod 5, First female mold core plate 6, Cavity 7, Second female mold core plate 8, Third female mold core plate 9, Horizontal limiting groove 10, Limiting block 11, Nylon opener / closer 12, First female mold slider assembly 13, First slider 131, Second slider 132, First drive block 133, Ejector pin 134, Pull stud 135, First connecting section 1351, Second connecting section 1352, Third connecting section 1353, Flange 1354, Second female mold slider assembly 14, Third slider 141, Second drive block 142, Male mold slider assembly 15, Fourth slider 151, Third drive block 152, Angled groove 161, Angled rod 162. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 4As shown, an embodiment of this application discloses a mold for producing the back frame of eyeglasses, characterized in that: it includes a female mold 1 and a male mold 2, wherein a female mold core assembly 3 is provided in the female mold 1, and a male mold core assembly 4 is provided in the male mold 2, wherein when the male mold 2 and the female mold 1 are closed, the male mold core assembly 4 and the female mold core assembly 3 form a cavity for the back frame of eyeglasses.

[0029] The female mold core assembly 3 is provided with a slanted ejector rod 5. The outer side of the slanted ejector rod 5, which extends into the cavity, is provided with a convex circle that mates with the groove in the rear frame of the eyeglasses. The female mold core assembly 3 includes a first female mold core plate 6. The first female mold core plate 6 has a cavity on the side away from the cavity. The first female mold core plate 6 is provided with a slanted groove 161 for the slanted ejector rod 5 to pass through. A second female mold core plate 8 and a third female mold core plate 9 are sequentially arranged in the cavity. The second female mold core plate 8 and the third female mold core plate 9 are fixedly connected. The second female mold core plate 8 and the third female mold core plate 9 are... The cavity bottom wall is provided with a gap, and a horizontal limiting groove 10 is provided between the second female mold core plate 8 and the third female mold core plate 9. The other end of the inclined ejector rod 5 is provided with a limiting block 11, which is located in the horizontal limiting groove 10. It also includes a nylon opener / closer 12. The two ends of the nylon opener / closer 12 are respectively connected to the third female mold core plate 9 and the male mold core assembly 4. When the male mold 2 and the female mold 1 are separated, the nylon opener / closer 12 pulls the third female mold core plate 9 to move towards the male mold 2, so that the end of the inclined ejector rod 5 that extends into the cavity moves horizontally under the inclined groove 161.

[0030] During product manufacturing, male mold 2 and female mold 1 are closed, and the masterbatch enters the cavity through the injection port for molding. After the product is formed, male mold 2 and female mold 1 are opened. During the mold opening process...

[0031] The nylon opener 12 pulls the third female mold plate 9 towards the male mold 2. Since the third female mold plate 9 is fixedly connected to the second female mold plate 8, it drives the second female mold plate 8 to move together. That is, at this time, the third female mold plate 9 and the second female mold plate 8 move relative to the first female mold plate 6, that is, the inclined ejector rod 5 moves relative to the first female mold plate 6.

[0032] Meanwhile, since the limiting block 11 is located in the horizontal limiting groove 10 and the inclined ejector rod 5 passes through the inclined groove 161, during the movement of the third female mold core plate 9 towards the male mold 2, under the action of the inclined groove 161 of the first female mold core plate 6, the end of the inclined ejector rod 5 extending into the cavity moves horizontally under the action of the inclined groove 161, thereby driving the convex round to move horizontally, so that the convex round separates from the groove in the back frame of the glasses. When the third female mold core plate 9 contacts the bottom wall of the cavity, the first female mold core plate 6 drives the third female mold core plate 9 and the second female mold core plate 8 to retract, thereby completing the demolding process. In this process, no damage is caused to the back frame structure of the glasses, thus improving the yield rate of the product.

[0033] In this structure, the inclined ejector rod 5 is designed so that it can move along the inclined groove 161 during demolding, thereby driving the convex circle to move horizontally. As a result, when the inclined ejector rod 5 is withdrawn outward, the convex circle of the inclined ejector rod 5 will not cause damage to the groove inside the back frame of the glasses, thus improving the yield rate of the product.

[0034] In this embodiment, a female mold 1 slider assembly connected to the female mold 1 is also included. The molding end of the female mold 1 slider assembly extends into the cavity. When the male mold 2 separates from the female mold 1, the female mold 1 slider assembly moves outward away from the male mold 2.

[0035] Specifically, when the male mold 2 and the female mold 1 are in the parting motion, the slider assembly of the female mold 1 first moves outward, and then moves backward following the female mold 1.

[0036] This design prevents damage to the product structure due to excessive friction between the slider and the product during demolding.

[0037] In this embodiment, the female mold 1 slider assembly includes a first female mold slider assembly 13 located at both ends of the cavity along the X-axis direction;

[0038] The first female mold slider assembly 13 includes a first slider 131, a second slider 132 and a first drive block 133 arranged sequentially from the inside to the outside. The second slider 132 and the first drive block 133 are fixedly connected. The first drive block 133 is used to drive the second slider 132 to retract. The end of the first slider 131 away from the second slider 132 is the forming end. It also includes an ejector pin 134. One end of the ejector pin 134 is fixedly connected to the second slider 132. The other end of the ejector pin 134 extends out of the forming end of the first slider 131. It also includes a pull stud 135 for connecting the first slider 131 and the second slider 132.

[0039] During operation, the second slider 132 first pulls the ejector pin 134 backward a certain distance, and then pulls the first slider 131 backward through the pull pin 135.

[0040] During the demolding process, the female mold 1 moves away from the male mold 2, and the first drive block 133 drives the second slider 132 to move backward. This causes the second slider 132 to first drive the ejector pin 134 to move backward, meaning the ejector pin 134 moves away from the product. Then, after the ejector pin 134 moves backward a certain distance, under the action of the pull pin 135, the second slider 132 drives the first slider 131 to move backward, thereby completing the demolding operation of the first female mold slider assembly 13.

[0041] The above structure design, by retracting the ejector pin 134 first and then the first slider 131 retracts, can reduce the pulling force on the product when the entire slider retracts, thereby improving the product yield.

[0042] In this embodiment, the pull stud 135 includes a first connecting segment 1351, a second connecting segment 1352, and a third connecting segment 1353 arranged sequentially. The first connecting segment 1351 is fixedly connected to the second slider 132. The cross-sectional diameter of the second connecting segment 1352 is smaller than that of the third connecting segment 1353. The first slider 131 is provided with a first through groove and a second through groove. A flange 1354 is provided at the connection between the first through groove and the second through groove to block the third connecting segment 1353. After the third connecting segment 1353 is blocked at the flange 1354, the second slider 132 drives the first slider 131 to move backward together.

[0043] Specifically, when the first female mold slider assembly 13 retracts, the second slider 132 drives the ejector pin 134 to retract. At this time, the third connecting section 1353 moves along the first through groove. When the third connecting section 1353 moves to the flange 1354, the third connecting section 1353 is blocked by the flange 1354. At this time, since the second slider 132 is fixedly connected to the first driving block 133, the first driving block 133 continues to drive the second slider 132 to retract. This causes the second slider 132 to pull the first slider 131 to retract through the cooperation of the flange 1354 and the third connecting section 1353. That is, at this time, the first slider 131 and the second slider 132 retract simultaneously until the first female mold slider assembly 13 is completely separated from the product, thus completing the demolding.

[0044] The above structural design is simple, and only one drive is needed to realize the sequential movement relationship between the first slider 131 and the second slider 132, thereby reducing the design complexity of the mold.

[0045] In this embodiment, the female mold 1 slider assembly includes a second female mold slider assembly 14 located at both ends of the cavity along the Y-axis direction;

[0046] The second slider 132 assembly includes a third slider 141 and a second drive block 142. The third slider 141 and the second drive block 142 are fixedly connected. The end of the third slider 141 away from the second drive block 142 is a forming end. The second drive block 142 is used to drive the third slider 141 to retract.

[0047] During demolding, the female mold 1 moves away from the male mold 2, and the second drive block 142 drives the third slider 141 to retract, thereby realizing the demolding operation of the second female mold slider assembly 14. This design ensures that the slider can smoothly and easily separate from the product during demolding, avoiding damage to the product structure.

[0048] In this embodiment, a male mold slider assembly 15 connected to the male mold 2 is also included. The male mold slider assembly 15 includes a fourth slider 151 and a third driving block 152 for driving the fourth slider 151 to move backward. The fourth slider 151 is fixedly connected to the third driving block 152, and the end of the fourth slider 151 away from the third driving block 152 is the molding end.

[0049] During demolding, the male mold 2 moves away from the female mold 1, and the third drive block 152 drives the fourth slider 151 to retract, thereby realizing the demolding operation of the male mold slider assembly 15. This design further ensures that the slider can smoothly and easily separate from the product during the demolding process, avoiding damage to the product structure and improving demolding efficiency.

[0050] In this embodiment, the first driving block 133, the second driving block 142 and the third driving block 152 all include a driving block body. The driving block body is provided with a sloping groove 161 and also includes a sloping rod 162. One end of the sloping rod 162 extends into the sloping groove 161 and the other end of the sloping rod 162 is fixedly connected to the female mold 1 or the male mold 2.

[0051] Specifically, the drive block body cooperates with the inclined rod 162 through the inclined groove 161, so that when the male mold 2 or the female mold 1 moves away, the inclined rod 162 slides in the inclined groove 161, thereby driving the drive block body to drive the slider to make a horizontal backward movement.

[0052] This design enables automatic demolding of the slider without manual operation, improving production efficiency. Simultaneously, the cooperation between the inclined groove 161 and the inclined rod 162 ensures the stability of the slider during demolding, preventing damage to the product structure. Furthermore, the design of the inclined groove 161 and the inclined rod 162 can be adjusted according to actual needs to meet the demolding requirements of different products, improving the mold's applicability.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold for producing the back frame of eyeglasses, characterized in that: It includes a female mold (1) and a male mold (2). The female mold (1) is provided with a female mold core assembly (3), and the male mold (2) is provided with a male mold core assembly (4). When the male mold (2) and the female mold (1) are molded together, the male mold core assembly (4) and the female mold core assembly (3) form a cavity for the back frame of the glasses. The female mold core assembly (3) is provided with a slanted ejector rod (5). The outer side of the slanted ejector rod (5) extending into the cavity is provided with a convex circle that mates with the groove in the back frame of the eyeglasses. The female mold core assembly (3) includes a first female mold core plate (6). The first female mold core plate (6) has a cavity on the side away from the cavity. The first female mold core plate (6) is provided with a slanted groove (161) through which the slanted ejector rod (5) passes. A second female mold core plate (8) and a third female mold core plate (9) are arranged sequentially in the cavity. The second female mold core plate (8) and the third female mold core plate (9) are fixedly connected. The second female mold core plate (8) and the third female mold core plate (9) are connected to the bottom of the cavity. The wall is provided with a gap, and a horizontal limiting groove (10) is provided between the second female mold core plate (8) and the third female mold core plate (9). The other end of the inclined ejector rod (5) is provided with a limiting block (11). The limiting block (11) is located in the horizontal limiting groove (10). It also includes a nylon opener (12). The two ends of the nylon opener (12) are respectively connected to the third female mold core plate (9) and the male mold core assembly (4). When the male mold (2) and the female mold (1) are separated, the nylon opener (12) pulls the third female mold core plate (9) to move towards the male mold (2), so that the end of the inclined ejector rod (5) that extends into the cavity moves horizontally under the action of the inclined groove (161).

2. The eyeglass back frame production mold as described in claim 1, characterized in that: It also includes a female mold (1) slider assembly connected to the female mold (1). The forming end of the female mold (1) slider assembly extends into the cavity. When the male mold (2) and the female mold (1) separate, the female mold (1) slider assembly moves outward away from the male mold (2).

3. The eyeglass back frame production mold as described in claim 2, characterized in that: The female mold (1) slider assembly includes a first female mold slider assembly (13) located at both ends of the cavity along the X-axis direction; The first female mold slider assembly (13) includes a first slider (131), a second slider (132) and a first drive block (133) arranged sequentially from the inside to the outside. The second slider (132) and the first drive block (133) are fixedly connected. The first drive block (133) is used to drive the second slider (132) to retract. The end of the first slider (131) away from the second slider (132) is the forming end. It also includes an ejector pin (134). One end of the ejector pin (134) is fixedly connected to the second slider (132). The other end of the ejector pin (134) extends out of the forming end of the first slider (131). It also includes a pull stud (135) for connecting the first slider (131) and the second slider (132). During operation, the second slider (132) first pulls the ejector pin (134) backward a certain distance, and then pulls the first slider (131) backward through the pull pin (135).

4. The eyeglass back frame production mold as described in claim 3, characterized in that: The pull stud (135) includes a first connecting section (1351), a second connecting section (1352), and a third connecting section (1353) arranged sequentially. The first connecting section (1351) is fixedly connected to the second slider (132). The cross-sectional diameter of the second connecting section (1352) is smaller than that of the third connecting section (1353). The first slider (131) is provided with a first through groove and a second through groove. A flange (1354) is provided at the connection between the first through groove and the second through groove to block the third connecting section (1353). After the third connecting section (1353) is blocked at the flange (1354), the second slider (132) drives the first slider (131) to move backward together.

5. The eyeglass back frame production mold as described in claim 3, characterized in that: The female mold (1) slider assembly includes a second female mold slider assembly (14) located at both ends of the cavity along the Y-axis direction; The second slider (132) assembly includes a third slider (141) and a second drive block (142). The third slider (141) and the second drive block (142) are fixedly connected. The end of the third slider (141) away from the second drive block (142) is the forming end. The second drive block (142) is used to drive the third slider (141) to retract.

6. The eyeglass back frame production mold as described in claim 5, characterized in that: It also includes a male mold slider assembly (15) connected to the male mold (2). The male mold slider assembly (15) includes a fourth slider (151) and a third drive block (152) for driving the fourth slider (151) to move backward. The fourth slider (151) is fixedly connected to the third drive block (152), and the end of the fourth slider (151) away from the third drive block (152) is the forming end.

7. The eyeglass back frame production mold as described in claim 6, characterized in that: The first drive block (133), the second drive block (142) and the third drive block (152) all include a drive block body. The drive block body is provided with a slanted groove (161) and also includes a slanted rod (162). One end of the slanted rod (162) extends into the slanted groove (161), and the other end of the slanted rod (162) is fixedly connected to the female mold (1) or the male mold (2).

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