A mold fixing device

Abstract

The utility model belongs to spectacle lens production technical field, specifically is a kind of mould fixing device, including mounting seat, the inside of the top side of mounting seat is equipped with four positioning holes, the inside of positioning hole is symmetrically equipped with two sliding slots, the outside of guide rod is located the inside of sliding slot and positioning hole and is commonly slidably installed with slide, and the both ends between the bottom side of slide and sliding slot are all fixedly connected with compression spring, the bottom side of slide is equipped with electrode plate, and the bottom side inner wall of positioning hole is equipped with electrode piece;Positioning pin is inserted into positioning hole, the gravity of lower mould makes slide along guide rod to the bottom side of positioning hole, and compression spring is compressed, when electrode plate and electrode piece contact, circuit is conducted to generate electric signal, the signal is transmitted to control panel through the signal line where indicating lamp is located, after receiving electric signal, control panel immediately controls electromagnet to be electrified, electromagnet generates magnetic force and adsorbs iron block at the bottom of lower mould, and the lower mould is quickly and stably fixed.

Description

Technical Field

[0001] This utility model relates to the field of lens manufacturing technology, specifically a mold fixing device. Background Technology

[0002] During the injection molding process of lenses, the mold needs to withstand high pressure. If the mold is not fixed firmly, slight displacement or deformation may occur, affecting the quality of the lens. Fixing the mold is a key step to ensure production accuracy, stability and safety, so a fixing device is needed.

[0003] A Chinese patent with authorization announcement number CN220883144U discloses an injection mold fixing device for an injection molding machine, including a support base, a baffle fixedly installed on the top of the support base, a pair of limiting plates fixedly installed on the top of the support base, and a fixing mechanism inside the support base. The fixing mechanism includes spring telescopic rods, a pair of spring telescopic rods fixedly installed on the surface of the limiting plates, and a fixing plate fixedly connected to the top of the spring telescopic rods. Because of the fixing mechanism inside the support base, disassembly can be completed simply by reversing and rotating the handle to separate the extrusion plate from the surface of the mold body, and then pulling the mold body out from between the fixing plates. This solves the problem of the cumbersome process and low work efficiency of traditional injection molds when changing molds.

[0004] However, the aforementioned fixing device still has some problems. In practical applications, it cannot quickly fix the mold, the steps are cumbersome, and the existing technology uses a rotating handle for fixing, which is not reliable enough, thus reducing the production efficiency of the lens. Therefore, a mold fixing device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a mold fixing device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A mold fixing device of this utility model includes a base plate. A mounting seat is installed on the top side of the base plate. Four positioning holes are opened inside the top side of the mounting seat. Two sliding grooves are symmetrically opened on the inner side of each positioning hole. A guide rod is fixedly connected between the two sides of each sliding groove. A sliding plate is slidably installed on the outer side of the guide rod, located inside the sliding groove and the positioning hole. Compression springs are fixedly connected between the bottom ends of the sliding plate and the sliding groove. The compression springs are sleeved on the outer side of the guide rods. The compression springs have high elasticity. An electrode plate is assembled on the bottom side of the sliding plate. An electrode sheet is assembled on the inner wall of the bottom side of the positioning hole. An installation groove is opened inside the top side of the mounting seat. An electrode plate is installed inside the installation groove. An electromagnet is used, with a lower mold mounted directly above the mounting base. Four positioning pins matching the positioning holes are mounted on the bottom side of the lower mold, and an iron block is mounted on the bottom side of the lower mold. An indicator light is mounted on one side of the mounting base. When the lower mold needs to be installed and fixed, the positioning pins are inserted into the positioning holes. The gravity of the lower mold causes the sliding plate to slide along the guide rod towards the bottom of the positioning holes, compressing the spring. The electrode plate and electrode sheet gradually come into contact, generating an electrical signal. The indicator light receives this signal and transmits it to the control panel via a signal line. The control panel then controls the electromagnet to be energized, attracting the iron block, thereby quickly and securely fixing the lower mold to the mounting base. This achieves rapid positioning and automatic fixing of the lower mold, greatly shortening the mold installation time and improving production preparation efficiency.

[0007] Preferably, support columns are fixedly installed at the four corners of the top side of the base plate, and a support plate is installed on the top side of the support columns. A cylinder is installed on the top side of the support plate, and a sliding plate is installed at the working end of the cylinder. The four corners of the sliding plate are slidably installed on the outside of the support columns. The cylinder can precisely control the up and down movement of the sliding plate. During the mold closing process, the cylinder pushes the sliding plate downward, causing the upper mold to move downward and closer to the lower mold, thereby achieving precise mold closing.

[0008] Preferably, a slide rail is provided inside the bottom side of the sliding plate, a slide bar is slidably installed inside the slide rail, a material storage cavity is installed on the bottom side of the slide bar, an upper mold is installed on the bottom side of the material storage cavity, a plurality of pouring holes are provided inside the upper mold through the material storage cavity, a feed pipe is connected to one side of the material storage cavity, one end of the feed pipe is connected to the molten raw material tank, and a valve is installed inside the feed pipe. Molten raw material enters the material storage cavity from the raw material tank through the feed pipe, and then is injected into the mold cavity through the pouring holes of the upper mold to realize the injection molding operation.

[0009] Preferably, a handle is installed on one side of the slide bar, and a screw hole is opened inside the handle. An mounting plate is installed on one side of the sliding plate, and a locking screw is rotatably installed inside the mounting plate. One end of the locking screw passes through the screw hole. When it is necessary to install or remove the upper mold for cleaning, the operator can easily slide the slide bar through the handle to pull out or push the upper mold under the sliding plate, and rotate the locking screw so that one end passes through the screw hole to lock and fix the slide bar, preventing the upper mold from shaking during the injection molding process and ensuring the stability of the injection molding.

[0010] Preferably, the height of the mounting groove is equal to the height of the electromagnet plus the iron block. When the lower mold is installed in place and the electromagnet attracts the iron block, it can ensure that the positioning pin is completely inside the positioning hole, thus ensuring accurate positioning between the lower mold and the mounting base.

[0011] Preferably, a control panel is installed on one side of the mounting base. The electrode plate, electrode sheet, indicator light, and electromagnet are connected to the power supply in a circuit. The indicator light is electrically connected to the control panel via a signal line. The control panel is used to control the operation of the electromagnet. The control panel is electrically connected to other electrical components inside the device, which improves the automation level of the device.

[0012] The advantages of this utility model are:

[0013] 1. In this utility model, the positioning pin is inserted into the positioning hole. The lower mold itself causes the slide plate to slide along the guide rod towards the bottom of the positioning hole. The compression spring is compressed accordingly. During this process, the electrode plate gradually approaches the electrode sheet. When the electrode plate contacts the electrode sheet, the circuit is turned on and an electrical signal is generated. This signal is transmitted to the control panel through the signal line where the indicator light is located. After receiving the electrical signal, the control panel immediately controls the electromagnet to be energized. The electromagnet generates a magnetic force to attract the iron block at the bottom of the lower mold, thus achieving rapid and stable fixation of the lower mold.

[0014] 2. With this utility model, the operator holds the handle and slides the slide bar along the slide rail, which drives the material storage cavity and the upper mold to be pulled out or pushed under the sliding plate as a whole. After the slide bar is adjusted to the correct position, the locking screw on the mounting plate is rotated. One end of the locking screw passes through the screw hole inside the handle and is tightened to make the slide bar and the sliding plate tightly fixed, preventing the upper mold from shaking during the injection process and ensuring the stability of the injection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the mold fixing device;

[0018] Figure 3 This is a schematic diagram of the structure before the lower mold is fixed.

[0019] Figure 4 This is a schematic diagram of the structure after the lower mold is fixed.

[0020] Figure 5 This is a schematic diagram of the structure for installing and fixing components on the upper mold.

[0021] In the diagram: 1. Base plate; 2. Mounting base; 3. Positioning hole; 4. Slide groove; 5. Guide rod; 6. Slide plate; 7. Compression spring; 8. Electrode plate; 9. Electrode sheet; 10. Mounting groove; 11. Electromagnet; 12. Lower mold; 13. Positioning pin; 14. Iron block; 15. Indicator light; 16. Support column; 17. Support plate; 18. Cylinder; 19. Sliding plate; 20. Slide rail; 21. Sliding bar; 22. Material storage cavity; 23. Upper mold; 24. Gating hole; 25. Feed pipe; 26. Valve; 27. Handle; 28. Mounting plate; 29. ​​Locking screw; 30. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-4As shown, a mold fixing device includes a base plate 1. A mounting base 2 is installed on the top side of the base plate 1. Four positioning holes 3 are opened inside the top side of the mounting base 2. Two sliding grooves 4 are symmetrically opened on the inner side of each positioning hole 3. A guide rod 5 is fixedly connected between the two sides of each sliding groove 4. A sliding plate 6 is slidably installed on the outer side of the guide rod 5, inside the sliding groove 4 and the positioning holes 3. Compression springs 7 are fixedly connected between the bottom ends of the sliding plate 6 and the sliding groove 4. The compression springs 7 are sleeved on the outer side of the guide rod 5. The compression spring 7 has high elasticity. An electrode plate 8 is mounted on the bottom side of the slide plate 6. An electrode sheet 9 is mounted on the inner wall of the bottom side of the positioning hole 3. An installation groove 10 is opened inside the top side of the mounting base 2. An electromagnet 11 is installed inside the installation groove 10. A lower mold 12 is installed directly above the mounting base 2. Four positioning pins 13 that match the positioning hole 3 are installed on the bottom side of the lower mold 12. An iron block 14 is installed on the bottom side of the lower mold 12. An indicator light 15 is installed on one side of the mounting base 2.

[0024] The height of the mounting slot 10 is equal to the height of the electromagnet 11 plus the iron block 14.

[0025] A control panel 30 is mounted on one side of the mounting base 2. The electrode plate 8, electrode sheet 9, indicator light 15, and electromagnet 11 are connected to the power supply via a circuit. The indicator light 15 is electrically connected to the control panel 30 via a signal line. The control panel 30 is used to control the operation of the electromagnet 11. The control panel 30 is also electrically connected to other electrical components inside the device. In practical applications, the mold cannot be quickly fixed during operation; the process is cumbersome. Furthermore, the existing technology uses a rotating handle for fixing, which lacks reliability and reduces lens production efficiency. When fixing the lower mold 12, the positioning pin 13 is aligned with the positioning hole 3 and inserted. The lower mold 12 itself... Gravity causes the slide plate 6 to slide along the guide rod 5 toward the bottom of the positioning hole 3, and the compression spring 7 is compressed accordingly. During this process, the electrode plate 8 gradually approaches the electrode piece 9. When the electrode plate 8 contacts the electrode piece 9, the circuit is turned on and an electrical signal is generated. This signal is transmitted to the control panel 30 through the signal line where the indicator light 15 is located. After receiving the electrical signal, the control panel 30 immediately controls the electromagnet 11 to be energized. The electromagnet 11 generates a magnetic force to attract the iron block 14 at the bottom of the lower mold 12, and fixes the lower mold 12 firmly on the mounting base 2. Since the height of the mounting groove 10 is equal to the height of the electromagnet 11 plus the iron block 14, it ensures that the positioning pin 13 is completely located in the positioning hole 3, achieving precise positioning and realizing the rapid and stable fixing of the lower mold 12.

[0026] When the lower mold 12 needs to be removed, the operator turns off the power to the electromagnet 11 through the control panel 30. The magnetic force disappears, the compression spring 7 returns to its original deformation, and the sliding plate 6 is pulled upward with the help of external force, lifting the lower mold 12 to a certain height for easy removal.

[0027] Please see Figure 1-3 As shown, support columns 16 are fixedly installed at the four corners of the top side of the base plate 1. Support plates 17 are installed on the top side of the support columns 16. Cylinders 18 are installed on the top side of the support plates 17. Sliding plates 19 are installed at the working end of the cylinders 18. The four corners of the sliding plates 19 are slidably installed on the outside of the support columns 16.

[0028] The sliding plate 19 has a slide rail 20 inside its bottom side, and a slide bar 21 is slidably installed inside the slide rail 20. A storage cavity 22 is installed on the bottom side of the slide bar 21, and an upper mold 23 is installed on the bottom side of the storage cavity 22. The upper mold 23 has several pouring holes 24 that penetrate the storage cavity 22 inside its interior. A feed pipe 25 is connected to one side of the storage cavity 22, and one end of the feed pipe 25 is connected to the molten raw material bucket. A valve 26 is installed inside the feed pipe 25.

[0029] A handle 27 is installed on one side of the slide bar 21, and a screw hole is opened inside the handle 27. An mounting plate 28 is installed on one side of the sliding plate 19, and a locking screw 29 is rotatably installed inside the mounting plate 28. One end of the locking screw 29 passes through the screw hole. During operation, when the lens injection mold is being processed, the mold needs to withstand high pressure during the injection process. If the mold is not firmly fixed, slight displacement or deformation may occur, affecting the quality of the lens. Fixing the mold is a key step to ensure production accuracy, stability and safety. Therefore, a fixing device is needed. When the upper mold 23 needs to be installed or disassembled for cleaning, the operator holds the handle 27 and slides the slide bar 21 along the slide rail 20, which drives the material storage cavity 22 and the upper mold 23 to be pulled out or pushed under the sliding plate 19 as a whole. After the position of the slide bar 21 is adjusted, the locking screw 29 is rotated. One end of the locking screw 29 passes through the screw hole inside the handle 27 and is tightened, so that the slide bar 21 is tightly fixed to the sliding plate 19, preventing the upper mold 23 from shaking during the injection process and ensuring the stability of the injection.

[0030] When cylinder 18 is activated, its working end drives sliding plate 19 to move downward. Sliding plate 19 drives the fixed upper mold 23 to move downward and approach the lower mold 12. With its precise displacement control capability, cylinder 18 achieves precise mold closing of the upper and lower molds 12, ensuring cavity sealing and preventing material leakage during injection molding.

[0031] After the mold is closed, the molten raw material tank is connected through the feed pipe 25, the valve 26 is opened, and the raw material flows into the storage chamber 22 through the feed pipe 25. The raw material is then injected into the cavity formed by the lower mold 12 and the upper mold 23 through the pouring hole 24 inside the upper mold 23 to complete the injection molding.

[0032] Working principle: When the lower mold 12 needs to be fixed, the positioning pin 13 is inserted into the positioning hole 3. The weight of the lower mold 12 causes the slide plate 6 to slide along the guide rod 5 to the bottom of the positioning hole 3. The compression spring 7 is compressed accordingly. During this process, the electrode plate 8 gradually approaches the electrode piece 9. When the electrode plate 8 contacts the electrode piece 9, the circuit is turned on and an electrical signal is generated. This signal is transmitted to the control panel 30 through the signal line where the indicator light 15 is located. After receiving the electrical signal, the control panel 30 immediately controls the electromagnet 11 to be energized. The electromagnet 11 generates magnetic force to attract the iron block 14 at the bottom of the lower mold 12, and fixes the lower mold 12 firmly on the mounting base 2. Since the height of the mounting groove 10 is equal to the height of the electromagnet 11 plus the iron block 14, it ensures that the positioning pin 13 is completely located in the positioning hole 3, achieving accurate positioning and realizing fast and stable fixing of the lower mold 12.

[0033] When the lower mold 12 needs to be removed, the operator turns off the power to the electromagnet 11 through the control panel 30. When the magnetic force disappears, the compression spring 7 returns to its deformation. With the help of external force, the sliding plate 6 is pulled upward to lift the lower mold 12 to a certain height, making it easy to remove.

[0034] When the upper mold 23 needs to be installed or disassembled for cleaning, the worker holds the handle 27 and slides the slide bar 21 along the slide rail 20, which drives the material storage cavity 22 and the upper mold 23 to be pulled out or pushed into the lower part of the sliding plate 19. After the position of the slide bar 21 is adjusted, the locking screw 29 is rotated. One end of the locking screw 29 passes through the screw hole inside the handle 27 and is tightened to make the slide bar 21 and the sliding plate 19 tightly fixed, preventing the upper mold 23 from shaking during the injection process and ensuring the stability of the injection.

[0035] When cylinder 18 is activated, its working end drives sliding plate 19 to move downward. Sliding plate 19 drives the fixed upper mold 23 to move downward and approach the lower mold 12. With its precise displacement control capability, cylinder 18 achieves precise mold closing of the upper and lower molds 12, ensuring cavity sealing and preventing material leakage during injection molding.

[0036] After the mold is closed, the molten raw material tank is connected through the feed pipe 25, the valve 26 is opened, and the raw material flows into the storage chamber 22 through the feed pipe 25. The raw material is then injected into the cavity formed by the lower mold 12 and the upper mold 23 through the pouring hole 24 inside the upper mold 23 to complete the injection molding.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mold fixing device, characterized in that: Includes a base plate (1), on the top side of which a mounting base (2) is installed. The top side of the mounting base (2) has four positioning holes (3). Two symmetrical sliding grooves (4) are formed on the inner side of each positioning hole (3). Guide rods (5) are fixedly connected between the two sides of each sliding groove (4). A sliding plate (6) is slidably mounted on the outer side of each guide rod (5) inside the sliding groove (4) and the positioning holes (3). Compression springs (7) are fixedly connected between the bottom ends of the sliding plate (6) and the sliding groove (4). The compression springs (7) are sleeved on the outer side of the guide rods (5). The spring (7) has high elasticity. The bottom side of the slide plate (6) is equipped with an electrode plate (8). The bottom inner wall of the positioning hole (3) is equipped with an electrode sheet (9). The top side of the mounting base (2) is provided with a mounting groove (10). An electromagnet (11) is installed inside the mounting groove (10). The lower mold (12) is installed directly above the mounting base (2). The bottom side of the lower mold (12) is equipped with four positioning pins (13) that match the positioning hole (3). The bottom side of the lower mold (12) is equipped with an iron block (14). An indicator light (15) is installed on one side of the mounting base (2).

2. The mold fixing device according to claim 1, characterized in that: Support columns (16) are fixedly installed at the four corners of the top side of the base plate (1). Support plates (17) are installed on the top side of the support columns (16). Cylinders (18) are installed on the top side of the support plates (17). A sliding plate (19) is installed at the working end of the cylinder (18). The four corners of the sliding plate (19) are slidably installed on the outside of the support columns (16).

3. The mold fixing device according to claim 2, characterized in that: The sliding plate (19) has a slide rail (20) inside its bottom side. A slide bar (21) is slidably installed inside the slide rail (20). A storage cavity (22) is installed on the bottom side of the slide bar (21). An upper mold (23) is installed on the bottom side of the storage cavity (22). A plurality of pouring holes (24) are opened through the storage cavity (22) inside the upper mold (23). A feed pipe (25) is connected to one side of the storage cavity (22). One end of the feed pipe (25) is connected to the molten raw material bucket. A valve (26) is installed inside the feed pipe (25).

4. The mold fixing device according to claim 3, characterized in that: A handle (27) is installed on one side of the slide bar (21), and a screw hole is provided inside the handle (27). An mounting plate (28) is installed on one side of the sliding plate (19), and a locking screw (29) is rotatably installed inside the mounting plate (28). One end of the locking screw (29) is provided through the screw hole.

5. A mold fixing device according to claim 4, characterized in that: The height of the mounting slot (10) is equal to the height of the electromagnet (11) plus the iron block (14).

6. The mold fixing device according to claim 1, characterized in that: A control panel (30) is installed on one side of the mounting base (2). The electrode plate (8), electrode sheet (9), indicator light (15), and electromagnet (11) are connected to the power supply in a circuit. The indicator light (15) is electrically connected to the control panel (30) through a signal line. The control panel (30) is used to control the operation of the electromagnet (11). The control panel (30) is electrically connected to other electrical components inside the device.

Images