Split demolding mechanism for front mold insert of glasses barrel

Abstract

The invention relates to the technical field of glasses barrel demolding, and discloses a glasses barrel front mold insert split demolding mechanism which comprises a lens barrel forming mold, the lens barrel forming mold comprises a positioning seat plate, and a fixed mold plate and a movable mold plate are sequentially arranged at the bottom of the positioning seat plate; a plurality of cavities with through tops are formed in the fixed mold plate, nylon buckles are mounted in the cavities, and a plurality of equal-height screws matched with the nylon buckles for use are mounted on the movable mold plate. By arranging the fixed mold plate, the movable mold plate, the mold cavity seat, the nylon buckle and the equal-height screw, the fixed mold seat plate and the movable mold plate are separated by 8mm firstly due to driving of the nylon buckle and the equal-height screw in the GCI mold frame during mold opening, so that a molded plastic part is separated from two large insert columns, four molding insert pins and two rack inserts firstly, and the molded plastic part is separated from the fixed mold seat plate and the movable mold plate; and after the equal-height screw reaches the limit position, the plastic part is separated from the two large insert columns, the four forming insert pins and the two rack inserts, so that the formed plastic can be prevented from being left on the front mold side.

Description

Technical Field

[0001] This invention relates to the field of spectacle tube demolding technology, specifically to a separate demolding mechanism for the front mold insert of spectacle tubes. Background Technology

[0002] Eyeglass case generally refers to a cylindrical container used to store or hold eyeglasses, commonly found in children's or portable designs, and often serving multiple purposes such as a pen holder. Mold, in industrial production, refers to various molds and tools used to obtain desired products through injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, and other methods. In short, a mold is a tool used to create shaped objects; this tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the shaping of objects by changing the physical state of the material being molded, and is often referred to as the "mother of industry." Eyeglass case demolding refers to the entire process of separating the eyeglass case plastic part from the mold's forming surface, cavity, and molding inserts after it has cooled and solidified in the injection mold cavity through the mold opening action and ejection or auxiliary mechanisms, and then removing the plastic part.

[0003] Currently, most eyeglass tube demolding is done in a single, direct demolding process. When the mold is opened in a single, direct demolding, the molding insert of the fixed mold is still inserted into the screw post in the inner hole of the plastic part. The ejection mechanism of the moving mold directly ejects the product, which is equivalent to forcibly pulling the plastic part and the insert apart. This can easily lead to axial scratches in the inner hole, breakage at the root of the screw post, and fraying at the edge of the slot, resulting in direct scrapping. This affects the molding accuracy of the product's appearance and reduces the yield. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a separate demolding mechanism for the front mold insert of eyeglasses barrels. This solves the problem that existing eyeglasses barrel demolding methods often involve single, direct demolding, which easily leads to axial scratches on the inner hole, breakage at the root of the screw post, and fraying at the edge of the slot, resulting in direct scrapping.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a split demolding mechanism for a front mold insert of an eyeglass barrel, comprising an eyeglass barrel forming mold, the eyeglass barrel forming mold including a positioning base plate, a fixed template and a movable template sequentially provided at the bottom of the positioning base plate, the fixed template having multiple cavities with through tops and nylon buckles installed inside the cavities, the movable template having multiple equal-height screws that cooperate with the nylon buckles, the fixed template having inserts and cavity seats for forming left and right eyeglass barrels, the inserts having forming inserts and forming pins for forming eyeglass barrels, the forming inserts and forming pins being located inside the cavity seats, the top of the positioning base plate having a positioning ring, and the positioning base plate having a sprue sleeve communicating with the cavity seats at the position opposite the positioning ring, the fixed template having a vibration demolding mechanism for assisting the eyeglass barrel to vibrate and demold.

[0006] By adopting the above technical solution, and by setting a fixed mold plate, a moving mold plate, a cavity seat, nylon buckles, and equalizing screws, the nylon buckles and equalizing screws in the GCI mold frame drive the fixed mold base plate and the moving mold plate to separate by 8mm during mold opening. This allows the molded plastic part to detach from the two large inserts, four molding pins, and two toothed inserts. When the equalizing screws reach their limit position, the plastic part has already detached from the two large inserts, four molding pins, and two toothed inserts. This prevents the plastic from remaining on the front mold side after molding. As the mold continues to open, the moving mold plate and the fixed mold plate separate, completing the demolding of the front and rear molds. Finally, the plastic part is ejected from the mold by the ejection mechanism of the mirror barrel molding mold, ensuring the molding accuracy and concentricity of the product.

[0007] Preferably, the tooth forming mechanism includes a guide block disposed inside the moving template, and a plurality of inclined rods for positioning are slidably disposed on the guide block. A rack insert is installed at the top of one of the inclined rods. A plurality of drive push rods are installed at the bottom of the lens barrel forming mold. A drive block is fixedly installed at the output end of the drive push rod. A groove is opened on the drive block, and the bottom end of the inclined rod is slidably disposed inside the groove.

[0008] Preferably, the demolding mechanism includes multiple vibrating blocks, the fixed template has two cavities, and a limit plate and a guide plate are fixedly installed inside each of the two cavities. Multiple push rods are slidably installed on the guide plate, and the ends of the multiple push rods are fixedly installed on adjacent vibrating blocks. The cavity is provided with a motion component for driving the vibrating blocks to reciprocate.

[0009] Preferably, the motion component includes a drive motor fixedly mounted on the side of the fixed template, two rotating disks rotatably mounted in each of the two cavities, the rotating disks being fixedly connected to the output shaft of the drive motor, and a rotating shaft being provided on one side of the two rotating disks opposite each other. A channel for the rotating shaft to move is opened on the fixed template. A rotating rod is rotatably mounted on the outer surface of the rotating shaft, and a sliding rod is rotatably mounted on the bottom end of the rotating rod. The sliding rod is slidably mounted on the limiting plate, and a wedge block one is fixedly mounted on the bottom end of the sliding rod. A wedge block two, which cooperates with the wedge block one, is fixedly mounted on the other end of the top rod.

[0010] Preferably, a plurality of pushing blocks are eccentrically mounted on the outer surface of the rotating shaft. The pushing blocks are rotatably mounted in a through groove opened on the fixed template, and the outer surface of the pushing blocks is in contact with the outer wall of the cavity seat.

[0011] Preferably, a self-inflating airbag is installed on the side of the guide plate near the second wedge block, and a multi-port air blowing pipe is installed on the other end of the guide plate. The air inlet of the air blowing pipe is connected to the air outlet of the self-inflating airbag, and the multiple air outlets of the air blowing pipe are close to the separation point of the cavity seat.

[0012] Preferably, the side of the rotating disk is provided with a sliding groove, and both ends of the rotating shaft are fixedly installed with sliders. The sliders are slidably disposed on the inner wall of the sliding groove, and the sliding groove is provided with an adjustment component for adjusting the position of the sliders.

[0013] Preferably, the adjustment assembly includes an electric push rod fixedly installed on the inner wall of the slide groove, and the slider is fixedly connected to the output end of the electric push rod.

[0014] Preferably, the vibrating block is configured as an elastic vibrating block, and the vibrating block has an elastic buffer pad on the side near the cavity seat.

[0015] Preferably, the lens barrel forming mold is equipped with cooling pipes at the positions of the fixed template, the moving template, and the cavity seat, and the ends of the cooling pipes penetrate the lens barrel forming mold and extend to the outside of the mold.

[0016] Working principle: During mold opening, the nylon buckles and equalizing screws in the GCI mold base drive the mold to separate the fixed mold base plate and the moving mold plate by 8mm. This allows the molded plastic part to detach from the two large inserts, four molding pins, and two rack inserts. When the equalizing screws reach their limit position, the plastic part has already detached from the two large inserts, four molding pins, and two rack inserts. This prevents the plastic from remaining on the front mold side after molding. As the mold continues to open, the moving mold plate and the fixed mold plate separate, completing the demolding of the front and rear molds. Finally, the plastic part is ejected from the mold by the ejection mechanism of the lens barrel molding mold, ensuring the molding accuracy and concentricity of the product. During demolding, the drive motor is activated, causing the rotating disk to rotate. Simultaneously, the rotating disk drives a rotating rod via a shaft. This rotating rod pulls a sliding rod, which is then limited by a limiting plate, allowing the sliding rod to move stably up and down. The sliding rod's movement causes wedge block one to move up and down synchronously, engaging with wedge block two. The inclined surface of wedge block two in contact with wedge block one is a trapezoidal protrusion. Wedge block one has an inverted trapezoidal groove on its inclined surface that works with the protrusion. As wedge block one moves up and down, it drives wedge block two to reciprocate laterally. The movement of wedge block two causes the ejector rod to move synchronously, which in turn moves the vibrating block, vibrating and striking the cavity seat. This vibration facilitates rapid demolding. While the rotating shaft is rotating, it can drive the push block to rotate eccentrically. The rotating push block will come into contact with the top of the cavity seat, so that when the vibrating block vibrates and strikes the side of the cavity seat, it can simultaneously vibrate and strike the top of the cavity seat, realizing multi-directional vibration demolding and improving the demolding effect. When the second wedge moves, it will come into contact with the inflatable airbag, thereby squeezing the airbag and venting it. The gas vented from the airbag can be blown onto the lens barrel through the air pipe to cool it down. At the same time, the airflow generated can cause slight vibration to the lens barrel after demolding, helping it to separate quickly. The control of the electric push rod can adjust the position of the slider. The movement of the slider drives the rotating shaft to move synchronously, thereby adjusting the position of the rotating shaft. The change in the position of the rotating shaft can correspondingly change the movement distance of the sliding rod. The change in the distance of the sliding rod can in turn change the movement range of the vibrating block, thereby adjusting the magnitude of the vibration intensity. This avoids the problem of excessive force causing damage to the lens barrel or insufficient force resulting in poor effect.

[0017] This invention provides a mechanism for the separate demolding of the eyeglass lens front mold insert. It has the following advantages: 1. This invention, by setting a fixed template, a moving template, a cavity seat, nylon buckles, and equalizing screws, allows the fixed mold base plate and the moving template to separate by 8mm during mold opening due to the driving force of the nylon buckles and equalizing screws in the GCI mold frame. This allows the molded plastic part to detach from the two large inserts, four molding pins, and two toothed inserts. When the equalizing screws reach their limit position, the plastic part has already detached from the two large inserts, four molding pins, and two toothed inserts. This prevents the plastic from remaining on the front mold side after molding. As the mold continues to open, the moving template and the fixed template separate, completing the demolding of the front and rear molds. Finally, the plastic part is ejected from the mold by the ejection mechanism of the lens barrel molding mold, ensuring the molding accuracy and concentricity of the product.

[0018] 2. This invention comprises a drive motor, a rotating disk, a rotating shaft, a rotating rod, a sliding rod, a push rod, a wedge block one, and a wedge block two. The drive motor drives the rotating disk to rotate, and the rotating shaft simultaneously drives the rotating rod to follow the rotation. During the rotation of the rotating rod, the sliding rod moves synchronously. Under the action of the limiting plate, the sliding rod is limited, thereby driving the sliding rod to move stably up and down. The movement of the sliding rod drives the wedge block one to move up and down synchronously. The wedge block one and the wedge block two are in contact. The inclined surface of the wedge block two that contacts the wedge block one is set as an inverted trapezoidal protrusion. The inclined surface of the wedge block one is provided with an inverted trapezoidal groove that cooperates with the protrusion. Thus, when the wedge block one moves up and down, it drives the wedge block two to move laterally reciprocatingly. The movement of the wedge block two drives the push rod to move synchronously. The push rod can drive the vibration block to move, realizing the vibration and tapping work of the cavity seat, generating vibration of the cavity seat itself, which facilitates rapid demolding.

[0019] 3. By setting up a push block, the present invention can drive the push block to rotate eccentrically while the rotating shaft rotates. The rotating push block will come into contact with the top of the cavity seat, so that when the vibrating block vibrates and strikes the side of the cavity seat, it can simultaneously vibrate and strike the top of the cavity seat, thereby realizing multi-directional vibration demolding and improving the demolding effect.

[0020] 4. This invention, by setting up an inflatable airbag and a multi-channel air blowing pipe, will cause the wedge block to move and come into contact with the inflatable airbag, thereby squeezing the inflatable airbag and realizing the degassing of the inflatable airbag. The gas discharged from the inflatable airbag can be blown towards the lens barrel through the air blowing pipe to cool the lens barrel. At the same time, the airflow generated can produce slight vibrations to the lens barrel after demolding, helping it to separate quickly.

[0021] 5. This invention uses a slider and an electric push rod. The electric push rod can adjust the position of the slider. The movement of the slider drives the rotating shaft to move synchronously, thereby adjusting the position of the rotating shaft. The change in the position of the rotating shaft can correspondingly change the movement distance of the sliding rod. The change in the distance of the sliding rod can then change the movement range of the vibrating block, thereby adjusting the magnitude of the vibration force. This avoids the problem of excessive force causing damage to the lens barrel or insufficient force resulting in poor effect. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention from another angle; Figure 4 This is another angular cross-sectional structural schematic diagram of the present invention; Figure 5 This is a schematic diagram of the tooth forming mechanism of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the template of the present invention; Figure 7 This is a schematic diagram of the vibration demolding mechanism of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the rotating shaft of the present invention.

[0023] 1. Positioning plate; 2. Fixed template; 3. Moving template; 4. Cavity seat; 5. Cooling pipes; 6. Tooth forming mechanism; 601. Guide block; 602. Diagonal bar; 603. Drive block; 604. Drive push rod; 605. Rack insert; 7. Nylon buckle; 8. Equal height screw; 9. Insert; 10. Forming insert pin; 11. Forming insert pillar; 12. Vibration demolding mechanism; 1201. Drive motor; 202. Rotating disc; 1203. Rotating shaft; 1204. Rotating rod; 1205. Slider; 1206. Electric push rod; 1207. Limiting plate; 1208. Self-inflating airbag; 1209. Wedge block one; 1210. Wedge block two; 1211. Guide plate; 1212. Push rod; 1213. Vibrating block; 1214. Air blowing pipe; 1215. Pushing block; 1216. Sliding rod. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a separate demolding mechanism for the front mold insert of an eyeglass barrel, including an eyeglass barrel forming mold. The eyeglass barrel forming mold includes a positioning base plate 1. The bottom of the positioning base plate 1 is provided with a fixed template 2 and a movable template 3. The fixed template 2 has multiple cavities with open tops and nylon buckles 7 installed inside the cavities. The movable template 3 is provided with multiple equal-height screws 8 that cooperate with the nylon buckles 7. The fixed template 2 is provided with an insert 9 and a cavity seat 4 for forming the left and right eyeglass barrels. The insert 9 is provided with a forming insert 11 and a forming pin 10 for forming the eyeglass barrel. The forming insert 11 and the forming pin 10 are both located inside the cavity seat 4. The top of the positioning base plate 1 is provided with a positioning ring, and the positioning base plate 1 is provided with a sprue sleeve that communicates with the cavity seat 4 at the position opposite to the positioning ring. The fixed template 2 is provided with a vibration demolding mechanism 12 for helping the eyeglass barrel vibrate to demold. The tooth forming mechanism 6 includes a guide block 601 disposed inside the moving template 3. Multiple inclined rods 602 for positioning are slidably disposed on the guide block 601. A rack insert 605 is installed at the top of one of the inclined rods 602. Several drive push rods 604 are installed at the bottom of the lens barrel forming mold. A drive block 603 is fixedly installed at the output end of the drive push rod 604. A sliding groove is opened on the drive block 603. The bottom end of the inclined rod 602 is slidably disposed inside the sliding groove.

[0026] By setting a fixed mold plate 2, a moving mold plate 3, a cavity seat 4, nylon buckles 7, and equalizing screws 8, the nylon buckles 7 and equalizing screws 8 in the GCI mold frame drive the fixed mold base plate and the moving mold plate 3 to separate by 8mm during mold opening. This allows the molded plastic part to detach from the two large inserts, four molding pins 10, and two toothed inserts 605. When the equalizing screws 8 reach their limit position, the plastic part has detached from the two large inserts, four molding pins 10, and two toothed inserts 605. This prevents the plastic from remaining on the front mold side after molding. As the mold continues to open, the moving mold plate 3 and the fixed mold plate 2 separate, completing the demolding of the front and rear molds. Finally, the plastic part is ejected from the mold by the ejection mechanism of the mirror barrel molding mold, ensuring the molding accuracy and concentricity of the product.

[0027] Further, see attached document. Figure 5 By setting up a slant bar 602, a drive push rod 604, a drive block 603, a guide block 601, and a rack insert 605, the drive push rod 604 can drive the drive block 603 to move. The movement of the drive block 603 can synchronously drive the slant bar 602 to slide on the guide block 601, guiding the slant bar 602. The movement of the slant bar 602 drives the rack insert 605 to move synchronously, realizing the demolding of the rack insert 605, effectively preventing its deviation and further ensuring the product molding accuracy.

[0028] For details, please refer to the appendix. Figure 6 - Appendix Figure 8 The demolding mechanism includes multiple vibrating blocks 1213. The fixed template 2 has two cavities, and a limit plate 1207 and a guide plate 1211 are fixedly installed inside each cavity. Multiple push rods 1212 are slidably installed on the guide plate 1211. The ends of the multiple push rods 1212 are fixedly installed on adjacent vibrating blocks 1213. The cavity is provided with a motion component for driving the vibrating blocks 1213 to reciprocate.

[0029] By setting up ejector rods 1212, vibration blocks 1213 and motion components, the motion components can drive multiple ejector rods 1212 to move synchronously. The movement of multiple ejector rods 1212 drives multiple vibration blocks 1213 to move, which can strike the outer wall of the cavity seat 4, causing the cavity seat 4 to vibrate itself, helping the internal mirror barrel to demold quickly, reducing the problem of demolding adhesion in some areas, which leads to demolding damage.

[0030] For details, please refer to the appendix. Figure 6 - Appendix Figure 8The motion assembly includes a drive motor 1201 fixedly mounted on the side of the fixed template 2, and two rotating disks 1202 rotatably mounted in each cavity. The rotating disks 1202 are fixedly connected to the output shaft of the drive motor 1201, and a rotating shaft 1203 is provided on the opposite side of the two rotating disks 1202. A channel for the rotating shaft 1203 to move is opened on the fixed template 2. A rotating rod 1204 is rotatably mounted on the outer surface of the rotating shaft 1203, and a sliding rod 1216 is rotatably mounted on the bottom end of the rotating rod 1204. The sliding rod 1216 is slidably mounted on the limiting plate 1207, and a wedge block 1209 is fixedly mounted on the bottom end of the sliding rod 1216. A wedge block 210 that cooperates with the wedge block 1209 is fixedly mounted on the other end of the top rod 1212.

[0031] By configuring a drive motor 1201, a rotating disk 1202, a rotating shaft 1203, a rotating rod 1204, a sliding rod 1216, a push rod 1212, a wedge block 1209, and a wedge block 1210, the drive motor 1201 drives the rotating disk 1202 to rotate. Simultaneously, the rotating disk 1202 rotates, and the rotating shaft 1203 drives the rotating rod 1204 to follow suit. During the movement of the rotating rod 1204, the sliding rod 1216 moves synchronously. Under the action of the limiting plate 1207, the sliding rod 1216 is limited, thereby driving the sliding rod 1216 to move stably up and down. The wedge block 1209 moves up and down synchronously, and the wedge block 1209 fits against the wedge block 2 1210. The inclined surface of the wedge block 2 that contacts the wedge block 1209 is set as an inverted trapezoidal protrusion. The inclined surface of the wedge block 1209 is provided with an inverted trapezoidal groove that works with the protrusion. As the wedge block 1209 moves up and down, it drives the wedge block 2 1210 to move laterally. The movement of the wedge block 2 1210 drives the ejector rod 1212 to move synchronously. The ejector rod 1212 can drive the vibrating block 1213 to move, realizing the vibration and knocking work of the cavity seat 4, generating vibration of the cavity seat 4 itself, which facilitates rapid demolding.

[0032] For details, please refer to the appendix. Figure 6 - Appendix Figure 8 Several push blocks 1215 are eccentrically mounted on the outer surface of the rotating shaft 1203. The push blocks 1215 are rotatably mounted in the through slot opened on the fixed template 2, and the outer surface of the push blocks 1215 is in contact with the outer wall of the cavity seat 4.

[0033] By setting the push block 1215, while the rotating shaft 1203 rotates, the push block 1215 can be driven to rotate eccentrically. When the push block 1215 rotates, it will contact the top of the cavity seat 4. Thus, when the vibrating block 1213 vibrates and strikes the side of the cavity seat 4, it can simultaneously vibrate and strike the top of the cavity seat 4, realizing multi-directional vibration demolding and improving the demolding effect.

[0034] For details, please refer to the appendix. Figure 6 and attached Figure 7 A self-inflating airbag 1208 is installed on the side of the guide plate 1211 near the wedge block 1210, and a multi-port air pipe 1214 is installed on the other end of the guide plate 1211. The air inlet of the air pipe 1214 is connected to the air outlet of the self-inflating airbag 1208, and the multiple air outlets of the air pipe 1214 are close to the separation point of the cavity seat 4.

[0035] By setting up an inflatable airbag and a multi-channel air blowing pipe 1214, when the wedge block 1210 moves, it will come into contact with the inflatable airbag, thereby squeezing the inflatable airbag and realizing the degassing of the inflatable airbag. The gas discharged from the inflatable airbag can be blown towards the lens barrel through the air blowing pipe 1214 to cool the lens barrel. At the same time, the airflow generated can produce a slight vibration on the lens barrel after demolding, which helps it to separate quickly.

[0036] For details, please refer to the appendix. Figure 8 The rotating disc 1202 has a sliding groove on its side. Both ends of the rotating shaft 1203 are fixedly installed with sliders 1205. The sliders 1205 are slidably disposed on the inner wall of the sliding groove. The sliding groove is provided with an adjustment component for adjusting the position of the sliders 1205. The adjustment component includes an electric push rod 1206 fixedly installed on the inner wall of the sliding groove. The sliders 1205 are fixedly connected to the output end of the electric push rod 1206.

[0037] By setting up slider 1205 and electric push rod 1206, the position of slider 1205 can be adjusted by electric push rod 1206. The movement of slider 1205 drives the rotating shaft 1203 to move synchronously, thereby adjusting the position of rotating shaft 1203. The change in the position of rotating shaft 1203 corresponds to the change in the movement distance of sliding rod 1216. The change in the distance of sliding rod 1216 changes the movement range of vibrating block 1213, thereby adjusting the magnitude of vibration intensity and avoiding the problem of excessive intensity causing damage to the lens barrel or insufficient intensity leading to poor effect.

[0038] For details, please refer to the appendix. Figure 8 The vibrating block 1213 is configured as an elastic vibrating block, and the vibrating block 1213 is provided with an elastic buffer pad on the side near the cavity seat 4.

[0039] The vibration block 1213 is set as an elastic vibration block and is equipped with an elastic buffer pad, which can effectively reduce the impact force of the vibration block 1213 on the cavity seat 4, and transform it into a gentler vibration, which provides a certain protection for the internal lens barrel.

[0040] For details, please refer to the appendix. Figure 7 and attached Figure 8Cooling pipes 5 are installed at the positions of the fixed template 2, the moving template 3, and the cavity seat 4 of the lens barrel forming mold. The ends of the cooling pipes 5 pass through the lens barrel forming mold and extend to the outside of the mold.

[0041] By setting up cooling pipes 5, the lens barrel can be cooled down quickly, which helps it to be quickly molded and cooled for demolding, thereby improving work efficiency.

[0042] Working principle: During mold opening, the nylon buckle 7 and the equalizing screw 8 in the GCI mold base drive the mold opening process. The nylon buckle 7 drives the fixed mold base plate and the moving platen 3 to separate by 8mm. This allows the molded plastic part to detach from the two large inserts, the four molding inserts 10, and the two rack inserts 605. When the equalizing screw 8 reaches its limit position, the plastic part has detached from the two large inserts, the four molding inserts 10, and the two rack inserts 605. This prevents the plastic from remaining on the front mold side after molding. As the mold opening continues, the moving platen 3 and the fixed platen 2 separate, completing the demolding of the front and rear molds. Finally, the plastic part is ejected from the mold by the ejection mechanism of the mirror barrel molding mold, which ensures the molding accuracy and concentricity of the product. During demolding, the drive motor 1201 is activated, causing the rotating disk 1202 to rotate. Simultaneously, the rotating disk 1202 rotates, driving the rotating rod 1204 via the rotating shaft 1203. During this movement, the rotating rod 1204 pulls the sliding rod 1216, which moves synchronously. The limiting plate 1207 limits the sliding rod 1216, causing it to move stably up and down. The movement of the sliding rod 1216 causes the wedge block 1209 to move up and down synchronously. The wedge block 1209 moves up and down in sync with the wedge... The second wedge 1210 fits into the first wedge 1209. The inclined surface of the second wedge 1209 that contacts the first wedge 1209 is set as an inverted trapezoidal protrusion. The inclined surface of the first wedge 1209 is provided with an inverted trapezoidal groove that works with the protrusion. When the first wedge 1209 moves up and down, it will drive the second wedge 1210 to move laterally. The movement of the second wedge 1210 drives the ejector rod 1212 to move synchronously. The ejector rod 1212 can drive the vibration block 1213 to move, so as to realize the vibration and knocking work of the cavity seat 4 and generate vibration of the cavity seat 4 itself, which facilitates rapid demolding. While the rotating shaft 1203 rotates, it can drive the push block 1215 to rotate eccentrically. The rotation of the push block 1215 will contact the top of the cavity seat 4, so that when the vibrating block 1213 vibrates and strikes the side of the cavity seat 4, it can simultaneously vibrate and strike the top of the cavity seat 4, realizing multi-directional vibration demolding and improving the demolding effect. When the wedge block 1210 moves, it will come into contact with the inflatable airbag, thereby squeezing the inflatable airbag and venting the airbag. The gas vented by the inflatable airbag can be blown towards the lens barrel through the air pipe 1214 to cool the lens barrel. At the same time, the airflow generated can produce a slight vibration on the lens barrel after demolding, which helps it to separate quickly. The control of the electric push rod 1206 can adjust the position of the slider 1205. The movement of the slider 1205 drives the rotating shaft 1203 to move synchronously, thereby adjusting the position of the rotating shaft 1203. The change in the position of the rotating shaft 1203 can correspondingly change the movement distance of the sliding rod 1216. The change in the distance of the sliding rod 1216 can in turn change the movement range of the vibrating block 1213, thereby adjusting the magnitude of the vibration intensity and avoiding the problem of excessive force causing damage to the lens barrel or insufficient force leading to poor effect.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanism for separating and demolding a front mold insert for an eyeglass barrel, comprising an eyeglass barrel forming mold, characterized in that, The lens barrel forming mold includes a positioning base plate (1). The bottom of the positioning base plate (1) is provided with a fixed template (2) and a movable template (3). The fixed template (2) has multiple cavities with through tops and nylon buckles (7) installed inside the cavities. The movable template (3) is provided with multiple equal-height screws (8) that cooperate with the nylon buckles (7). The fixed template (2) is provided with inserts (9) and cavity seats (4) for forming the left and right lens barrels. The inserts (9) are provided with forming inserts (11) and forming pins (10) for forming the lens barrels. The forming inserts (11) and forming pins (10) are both located inside the cavity seats (4). The top of the positioning base plate (1) is provided with a positioning ring, and the positioning base plate (1) is provided with a sprue sleeve that communicates with the cavity seats (4) at the position opposite to the positioning ring. The fixed template (2) is provided with a tooth forming mechanism (6) and a vibration demolding mechanism (12) for helping the lens barrel vibrate to demold.

2. The spectacle tube front mold insert split demolding mechanism according to claim 1, characterized in that: The tooth forming mechanism (6) includes a guide block (601) disposed inside the moving template (3). Multiple inclined rods (602) for positioning are obliquely slidably disposed on the guide block (601). A rack insert (605) is installed at the top of one of the inclined rods (602). Several drive push rods (604) are installed at the bottom of the lens barrel forming mold. A drive block (603) is fixedly installed at the output end of the drive push rod (604). A sliding groove is opened on the drive block (603). The bottom end of the inclined rod (602) is slidably disposed inside the sliding groove.

3. The spectacle tube front mold insert split demolding mechanism according to claim 1, characterized in that: The demolding mechanism includes multiple vibrating blocks (1213). The fixed template (2) has two cavities inside, and a limit plate (1207) and a guide plate (1211) are fixedly installed inside each of the two cavities. Multiple push rods (1212) are slidably installed on the guide plate (1211). The ends of the multiple push rods (1212) are fixedly installed on adjacent vibrating blocks (1213). The cavity is provided with a motion component for driving the vibrating blocks (1213) to reciprocate.

4. The spectacle tube front mold insert split demolding mechanism according to claim 3, characterized in that: The motion assembly includes a drive motor (1201) fixedly installed on the side of the fixed template (2). Two rotating disks (1202) are rotatably installed in the two cavities. The rotating disks (1202) are fixedly connected to the output shaft of the drive motor (1201). A rotating shaft (1203) is provided on the opposite side of the two rotating disks (1202). A channel for the rotating shaft (1203) to move is provided on the fixed template (2). A rotating rod (1204) is rotatably installed on the outer surface of the rotating shaft (1203). A sliding rod (1216) is rotatably installed at the bottom end of the rotating rod (1204). The sliding rod (1216) is slidably set on the limiting plate (1207). A wedge block one (1209) is fixedly installed at the bottom end of the sliding rod (1216). A wedge block two (1210) that cooperates with the wedge block one (1209) is fixedly installed at the other end of the top rod (1212).

5. The spectacle tube front mold insert split demolding mechanism according to claim 4, characterized in that: A number of push blocks (1215) are eccentrically mounted on the outer surface of the rotating shaft (1203). The push blocks (1215) are rotatably mounted in the through slots opened on the fixed template (2), and the outer surface of the push blocks (1215) is in contact with the outer wall of the cavity seat (4).

6. The spectacle tube front mold insert split demolding mechanism according to claim 4, characterized in that: A self-inflating airbag (1208) is installed on one side of the guide plate (1211) near the wedge block two (1210), and a multi-port air blowing pipe (1214) is installed on the other end of the guide plate (1211). The air inlet of the air blowing pipe (1214) is connected to the air outlet of the self-inflating airbag (1208), and the multiple air outlets of the air blowing pipe (1214) are close to the separation point of the cavity seat (4).

7. The spectacle tube front mold insert split demolding mechanism according to claim 4, characterized in that: The rotating disk (1202) has a sliding groove on its side. Both ends of the rotating shaft (1203) are fixedly installed with sliders (1205). The sliders (1205) are slidably disposed on the inner wall of the sliding groove, and the sliding groove is provided with an adjustment component for adjusting the position of the sliders (1205).

8. The spectacle tube front mold insert split demolding mechanism according to claim 7, characterized in that: The adjustment assembly includes an electric push rod (1206) fixedly installed on the inner wall of the slide, and the slider (1205) is fixedly connected to the output end of the electric push rod (1206).

9. A separate demolding mechanism for the eyeglass tube front mold insert according to claim 3, characterized in that: The vibrating block (1213) is configured as an elastic vibrating block, and the vibrating block (1213) has an elastic buffer pad on the side near the cavity seat (4).

10. The spectacle tube front mold insert split demolding mechanism according to claim 1, characterized in that: Cooling pipes (5) are installed at the positions of the fixed template (2), the moving template (3), and the cavity seat (4) of the lens barrel forming mold. The ends of the cooling pipes (5) penetrate the lens barrel forming mold and extend to the outside of the mold.

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