A multi-process forming apparatus for optical glass lenses

Abstract

This utility model relates to the technical field of optical lens forming equipment, and discloses a multi-process forming device for optical glass lenses. It includes a worktable, with a fixed frame and a fixed seat fixedly connected to the upper end of the worktable. The fixed seat is located in front of the fixed frame, and an electric push rod is fixedly connected to the end of the fixed frame. An upper mold is provided at the output shaft end of the electric push rod, and a sleeve is fixedly connected to the upper end of the fixed seat. Limiting grooves are formed on both the left and right sides of the upper end face of the sleeve, and a lower mold is provided inside the sleeve. It also includes an unloading mechanism installed inside the fixed seat. This utility model achieves rapid replacement of the upper and lower molds through bolted connection between the output shaft end of the electric push rod and the upper mold, and plug-and-play installation of the lower mold and the sleeve. It can adapt to the forming needs of glass lenses with different diameters, curvatures, or thicknesses without requiring overall disassembly of the equipment, significantly shortening changeover time, reducing the number of spare molds and production costs, and meeting the requirements of flexible production of multiple varieties in small batches.

Description

Technical Field

[0001] This utility model relates to the field of optical lens forming equipment technology, and in particular to a multi-process forming device for optical glass lenses. Background Technology

[0002] A lens is an optical element made of a transparent material with a surface that is part of a sphere. Compared to plastic lenses, optical glass lenses have advantages such as high image quality, good thermal stability, and scratch resistance, and are therefore widely used in high-precision imaging fields such as astronomical observation, military reconnaissance, traffic monitoring, medical imaging, and artistic photography.

[0003] Patent CN215799133U discloses a multi-process precision forming equipment for optical glass lenses, including a water tank, a lower mold, an upper mold, and a support plate. A fixed seat is welded to the middle of the bottom surface of the water tank, and the lower mold is fixedly installed on the top surface of the fixed seat. In this invention, cooling chambers are provided inside both the lower and upper molds, and multiple water guide nozzles and water inlets are respectively provided on the facing surfaces of the lower and upper molds. By opening a cylinder, one end of the cylinder drives the upper mold to move downward, and the connecting lug on the side of the upper mold slides against the guide post, so that the upper mold smoothly closes with the lower mold until the multiple water guide nozzles on the bottom surface of the upper mold are inserted and connected to the multiple water guide ports of the lower mold. Cooling water is introduced into the cooling chamber of the upper mold through a rectangular water inlet channel, so that the cooling water is evenly poured into the cooling chamber of the lower mold through the multiple water guide nozzles during the water cooling process of the upper mold. After the cooling water cools the lower mold, it is discharged through the multiple drain ports on the side of the lower mold.

[0004] However, the mold cavity size of the above-mentioned molding equipment is fixed, and it can only process a single type of glass lens. When it is necessary to switch to lenses with different diameters, curvatures or thicknesses, the entire mold must be replaced or the equipment must be re-adjusted, resulting in long auxiliary time, a large number of spare molds, and high production costs, making it difficult to meet the needs of multi-variety small-batch production. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-process forming apparatus for optical glass lenses to solve the problems mentioned in the background art.

[0006] This utility model provides a multi-process forming device for optical glass lenses, including a worktable. A fixed frame and a fixed base are fixedly connected to the upper end of the worktable. The fixed base is located in front of the fixed frame. An electric push rod is fixedly connected to the end of the fixed frame. An upper mold is provided at the output shaft end of the electric push rod. A sleeve is fixedly connected to the upper end of the fixed base. Limit grooves are formed on both the left and right sides of the upper end face of the sleeve. A lower mold is provided inside the sleeve. The device also includes: The unloading mechanism is installed inside the fixed base.

[0007] Preferably, the output shaft end of the electric push rod has a threaded hole, and the upper end of the upper mold is fixedly connected to a bolt, which is located inside the threaded hole and threadedly connected to it.

[0008] Preferably, both the upper and lower molds have cavities inside, and both the upper and lower molds are fixedly connected to the right end of a water inlet pipe, and both the upper and lower molds are fixedly connected to the left end of a water outlet pipe. The water inlet pipe and the water outlet pipe on the outer wall of the lower mold are respectively located inside the corresponding limiting groove.

[0009] Preferably, the unloading mechanism includes a bidirectional threaded rod, which is rotatably connected inside the fixed base. Threaded blocks are threadedly connected to the left rear side walls of the bidirectional threaded rod. A connecting rod is hinged to the rear end of each threaded block. A top plate is hinged to the end of the connecting rod. The top plate is located inside the sleeve and is slidably connected thereto. The upper end of the top plate abuts against the lower end of the lower mold.

[0010] Preferably, the unloading mechanism further includes a motor, which is fixedly connected to the right end of the fixed base, and the output shaft end of the motor is fixedly connected to the right end of the bidirectional threaded rod.

[0011] Preferably, a through hole is provided in the middle of the upper part of the top plate, a fixing block is fixedly connected to the lower end of the lower mold, an installation cavity is provided inside the fixing block, and sliding plates are slidably connected to the left and right sides inside the installation cavity. A limiting head is fixedly connected to the opposite end of a pair of sliding plates. The limiting head extends through to the outside of the fixing block and abuts against the lower end of the top plate. A spring is fixedly connected between the pair of sliding plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves rapid replacement of the upper and lower molds by bolting the output shaft end of the electric push rod to the upper mold and plugging the lower mold to the sleeve. It can adapt to the forming needs of glass lenses with different diameters, curvatures or thicknesses without the need for overall disassembly of the equipment, significantly shortening the changeover time, reducing the number of spare molds and production costs, and meeting the requirements of flexible production of multiple varieties and small batches.

[0013] 2. This utility model uses a motor in the unloading mechanism to drive the bidirectional threaded rod to rotate, which in turn moves the threaded block, thereby moving the connecting rod and the top plate upward. The spring and limit head buckle structure between the top plate and the lower mold fixing block can automatically eject the forming lens and the lower mold together from the sleeve after the mold is opened, and release the lower mold with one key, realizing the dual functions of automatic mold unloading and quick mold changing, further improving production efficiency and operational safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2This is an exploded view of the electric push rod and the upper mold of this utility model; Figure 3 This is a schematic diagram of the rear cross-sectional structure of the fixing base and the lower mold of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram of part A in the middle.

[0015] Numbering on the map: 1. Workbench; 2. Fixing frame; 3. Electric push rod; 31. Threaded hole; 4. Upper mold; 41. Bolt; 5. Fixing seat; 51. Sleeve; 52. Limiting groove; 6. Lower mold; 61. Fixing block; 611. Mounting cavity; 62. Slide plate; 63. Limiting head; 64. Spring; 7. Unloading mechanism; 71. Two-way threaded rod; 72. Threaded block; 73. Connecting rod; 74. Top plate; 75. Motor; 8. Water inlet pipe; 9. Water outlet pipe. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1-4 As shown, this utility model has the following two specific embodiments.

[0018] Example 1 An optical glass lens multi-process forming apparatus includes a worktable 1, with a fixed frame 2 and a fixed base 5 fixedly connected to the upper end of the worktable 1. The fixed base 5 is located in front of the fixed frame 2. An electric push rod 3 is fixedly connected to the end of the fixed frame 2. An upper mold 4 is provided at the output shaft end of the electric push rod 3. A sleeve 51 is fixedly connected to the upper end of the fixed base 5. Limit grooves 52 are formed on both the left and right sides of the upper end face of the sleeve 51. A lower mold 6 is provided inside the sleeve 51. The apparatus also includes: Unloading mechanism 7 is installed inside fixed base 5; The output shaft end of the electric push rod 3 is provided with a threaded hole 31, and the upper end of the upper mold 4 is fixedly connected with a bolt 41. The bolt 41 is located inside the threaded hole 31 and is threadedly connected to it. Both the upper mold 4 and the lower mold 6 have cavities inside. The right end of both the upper mold 4 and the lower mold 6 is fixedly connected to a water inlet pipe 8, and the left end of both the upper mold 4 and the lower mold 6 is fixedly connected to a water outlet pipe 9. The water inlet pipe 8 and the water outlet pipe 9 on the outer wall of the lower mold 6 are respectively located inside the corresponding limiting groove 52.

[0019] In this embodiment, as Figures 1-3 As shown, when a certain type of glass lens needs to be formed, the matching upper mold 4 is first screwed into the output shaft end of the electric push rod 3, and then the corresponding lower mold 6 is placed into the sleeve 51 from top to bottom, so that its water inlet pipe 8 and water outlet pipe 9 fall into the limiting groove 52 respectively to complete the positioning; then the external cooling water source is turned on, and the coolant flows into the cavity inside the upper mold 4 and the lower mold 6 through the water inlet pipe 8, and flows back through the water outlet pipe 9 to form a circulation, so that the mold temperature is maintained within the set range. After the mold is pre-cooled, the preheated glass blank is placed on the concave surface of the lower mold 6, the electric push rod 3 extends, the upper mold 4 descends smoothly and closes with the lower mold 6, and the pressure is maintained until the glass is completely attached to the mold cavity; after the forming is completed, the upper mold 4 rises back, the unloading mechanism 7 is immediately started, and the lower mold 6 and the lens are pushed out of the upper opening of the sleeve 51. The operator only needs to pull the lower mold 6 horizontally to remove the lens and send it to the next process. When changing to lenses of other specifications, unscrew the upper mold 4 in the opposite direction, pull out the lower mold 6, and then insert the new mold in the same way to continue production. The entire changeover process does not require tools and can be completed by one person in a few minutes.

[0020] Example 2 The difference from Embodiment 1 is that this embodiment discloses the specific structure of the unloading mechanism 7; The unloading mechanism 7 includes a bidirectional threaded rod 71, which is rotatably connected inside the fixed seat 5. The left and rear side walls of the bidirectional threaded rod 71 are threadedly connected to threaded blocks 72. The rear end of the threaded blocks 72 is hinged to a connecting rod 73. The end of the connecting rod 73 is hinged to a top plate 74. The top plate 74 is located inside the sleeve 51 and is slidably connected to it. The upper end of the top plate 74 abuts against the lower end of the lower mold 6. The unloading mechanism 7 also includes a motor 75, which is fixedly connected to the right end of the fixed base 5, and the output shaft end of the motor 75 is fixedly connected to the right end of the bidirectional threaded rod 71. A through hole is provided in the middle of the upper end of the top plate 74. A fixing block 61 is fixedly connected to the lower end of the lower mold 6. An installation cavity 611 is provided inside the fixing block 61. Slide plates 62 are slidably connected to the left and right sides inside the installation cavity 611. A limit head 63 is fixedly connected to the opposite end of a pair of slide plates 62. The limit head 63 extends through to the outside of the fixing block 61 and abuts against the lower end of the top plate 74. A spring 64 is fixedly connected between the pair of slide plates 62.

[0021] In this embodiment, as Figures 3-4As shown, after molding is complete and the upper mold 4 has fully recovered, the motor 75 starts and drives the bidirectional threaded rod 71 to rotate. The two threaded blocks 72 move inward synchronously under the action of the threads, pulling the lower end of the connecting rod 73. The upper end of the connecting rod 73 then pushes the top plate 74 to rise vertically along the inner wall of the sleeve 51. The top plate 74 first lifts the fixing block 61 and the lower mold 6. After continuing to rise a certain distance, the upper end of the lower mold 6 exceeds the upper opening of the sleeve 51, and the lens is exposed. At this time, the operator can directly pull the lower mold 6 out of the top plate 74, causing its limiting head 63 to retract into the fixing block 61. The spring 64 is compressed, and the limiting head 63 disengages from the lower edge of the top plate 74. The locking state between the lower mold 6 and the top plate 74 is released, and the lower mold 6 can be pulled away horizontally to remove the lens. After unloading, the empty lower mold 6 is placed back into the top plate 74, and the fixing block 61 is re-inserted into the through hole. The limiting head 63 will re-abut against the lower edge of the top plate 74, thus completing the quick connection between the lower mold 6 and the top plate 74. The motor 75 reverses, the threaded block 72 expands outward, and the connecting rod 73 drives the top plate 74 back to the bottom of the sleeve 51. The device then returns to the initial standby state, waiting for the next mold closing and forming.

[0022] The working principle of this utility model is as follows: The output shaft end of the electric push rod 3 is machined with internal threads, and the top of the upper mold 4 is equipped with bolt 41; the lower mold 6 and the sleeve 51 are in a plug-in fit, and the water inlet pipe 8 and the water outlet pipe 9 are positioned by the limiting groove 52. When changing specifications, it is only necessary to unscrew the upper mold 4 by hand, pull out the lower mold 6, and then reverse and install the new mold, without the need for auxiliary tools, which will shorten the mold changeover time; Both the upper mold 4 and the lower mold 6 have sealed cavities inside. Cooling liquid enters both cavities simultaneously through the water inlet pipe 8, absorbs the heat of molding, and then flows back through the water outlet pipe 9 to form a continuous water cooling circuit, so that the mold temperature is stabilized in the optimal range for glass molding, shortens the cooling cycle, suppresses thermal deformation, and ensures the accuracy of lens curvature. Motor 75 drives bidirectional threaded rod 71 to rotate, and two threaded blocks 72 move inward synchronously. Connecting rod 73 converts the rotational motion into the vertical upward motion of top plate 74. Top plate 74 forms a detachable snap-fit ​​with the limiting head 63 of fixing block 61 of lower mold 6 through through hole. After molding, top plate 74 pushes lower mold 6 and lens out of the upper opening of sleeve 51. Operator can directly pull out lower mold 6 to remove part. After returning to the empty mold, fixing block 61 is reinserted into through hole, and limiting head 63 will abut against the lower edge of top plate 74 again, thus completing the quick connection between lower mold 6 and top plate 74. Reversing motor 75 will cause top plate 74 to fall back, completing one unloading cycle. The entire process does not require manual lifting, avoiding high temperature burns and ensuring the repeatability and positioning accuracy of lower mold 6.

[0023] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A multi-process forming apparatus for optical glass lenses, comprising a worktable (1), characterized in that, The workbench (1) is fixedly connected to a fixed frame (2) and a fixed seat (5) at its upper end. The fixed seat (5) is located in front of the fixed frame (2). An electric push rod (3) is fixedly connected to the end of the fixed frame (2). An upper mold (4) is provided at the output shaft end of the electric push rod (3). A sleeve (51) is fixedly connected to the upper end of the fixed seat (5). Limiting grooves (52) are provided on both the left and right sides of the upper end face of the sleeve (51). A lower mold (6) is provided inside the sleeve (51). The workbench (1) also includes: The unloading mechanism (7) is installed inside the fixed base (5).

2. The multi-process forming apparatus for optical glass lenses according to claim 1, characterized in that, The output shaft end of the electric push rod (3) is provided with a threaded hole (31), and the upper end of the upper mold (4) is fixedly connected with a bolt (41). The bolt (41) is located inside the threaded hole (31) and is threadedly connected to it.

3. The multi-process forming apparatus for optical glass lenses according to claim 1, characterized in that, Both the upper mold (4) and the lower mold (6) have cavities inside. Both the upper mold (4) and the lower mold (6) are fixedly connected to the right end of the water inlet pipe (8). Both the upper mold (4) and the lower mold (6) are fixedly connected to the left end of the water outlet pipe (9). The water inlet pipe (8) and the water outlet pipe (9) on the outer wall of the lower mold (6) are located inside the corresponding limiting groove (52).

4. The multi-process forming apparatus for optical glass lenses according to claim 1, characterized in that, The unloading mechanism (7) includes a bidirectional threaded rod (71), which is rotatably connected inside the fixed seat (5). The left and rear sides of the bidirectional threaded rod (71) are connected to threaded blocks (72) by threads. The rear end of the threaded block (72) is hinged to a connecting rod (73). The end of the connecting rod (73) is hinged to a top plate (74). The top plate (74) is located inside the sleeve (51) and is slidably connected thereto. The upper end of the top plate (74) abuts against the lower end of the lower mold (6).

5. The multi-process forming apparatus for optical glass lenses according to claim 1, characterized in that, The unloading mechanism (7) also includes a motor (75), which is fixedly connected to the right end of the fixed base (5), and the output shaft end of the motor (75) is fixedly connected to the right end of the bidirectional threaded rod (71).

6. The multi-process forming apparatus for optical glass lenses according to claim 4, characterized in that, The top plate (74) has a through hole in the middle of its upper end. The lower mold (6) is fixedly connected to a fixing block (61) at its lower end. The fixing block (61) has an installation cavity (611) inside. Slide plates (62) are slidably connected to the left and right sides inside the installation cavity (611). A limit head (63) is fixedly connected to one end of each pair of slide plates (62) facing away from each other. The limit head (63) extends through to the outside of the fixing block (61) and abuts against the lower end of the top plate (74). A spring (64) is fixedly connected between the pair of slide plates (62).

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