A bushing assembly fixture and a bushing disassembly fixture

Abstract

This invention discloses a bushing assembly fixture and a bushing disassembly fixture. This invention can be used for assembling or disassembling a male mold core and a ball bearing bushing in an aspherical lens forming mold. It includes an anti-rotation component, an ejector rod, a slider, a rotary handle, a handle support, and a base. The anti-rotation component and the handle support are fixedly mounted on the base, and the slider is movably installed within the base between the anti-rotation component and the handle support. One end of the ejector rod passes through the anti-rotation component and abuts against the ball bearing bushing to be assembled / disassembled, and is fixedly connected to the end of the male mold core away from the forming part. The other end of the ejector rod is connected to the slider, and the rotary handle passes through the handle support and is threadedly connected to the slider. Rotating the rotary handle sequentially moves the slider, ejector rod, and male mold core in a linear fashion, causing the ball bearing bushing to be fitted onto the male mold core or to be removed from the ball bearing bushing.

Description

Technical Field

[0001] This invention relates to the field of lens mold technology, specifically to a bushing assembly fixture and a bushing disassembly fixture. Background Technology

[0002] Lenses in a camera lens are made according to the laws of light refraction. In other words, a lens is a refracting mirror, and its refractive surfaces can be two spherical surfaces or two aspherical surfaces. Therefore, due to the structural characteristics of lenses, the requirements for lens manufacturing processes and molds are very high, especially for aspherical lenses.

[0003] The insert is one of the key components in lens forming molds; its manufacturing precision and assembly precision both affect the forming quality of the lens. For example... Figure 1 and Figure 2 The diagram shows the fit between the male mold insert 1 and the ball bushing 2 in an aspherical lens forming mold. Since the male mold insert 1 and the ball bushing 2 have an interference fit, and the first process positioning groove 101 on the male mold insert 1 and the second process positioning groove 201 on the ball bushing 2 are required to be in the same direction, during the assembly process of the male mold insert 1 and the ball bushing 2, the male mold insert 1 is generally hammered into the ball bushing 2. However, since the ball bushing 2 may rotate during the hammering process, it is difficult to ensure that the first process positioning groove 101 and the second process positioning groove 201 remain in the same direction. Furthermore, since the forming part 102 of the male mold insert 1 is aspherical, hammering the forming part 102 will damage the aspherical shape and thus affect the lens forming quality. Therefore, it is impossible to hammer the male mold insert 1 into the ball bushing 2. Conversely, during the disassembly of the male mold insert 1 and the ball bushing 2, a jig can be used to knock out the ball bushing 2 or the male mold insert 1. However, since the wall thickness of the ball bushing 2 is relatively thin and the forming part 102 of the male mold insert 1 is non-spherical, the male mold insert 1 and the ball bushing 2 may be damaged during the knocking process, making it difficult to disassemble the male mold insert 1 and the ball bushing 2. Summary of the Invention

[0004] The purpose of this invention is to provide an assembly fixture and a disassembly fixture that can be used for bushings in aspherical lens forming molds.

[0005] The present invention will achieve the above-mentioned objectives through the following technical solutions.

[0006] In a first aspect, the present invention provides a bushing assembly fixture, which can be used for assembling a male mold core and a ball bearing bush in an aspherical lens forming mold. The fixture includes an anti-rotation component, an ejector rod, a slider, a rotary handle, a handle support, and a base. The anti-rotation component and the handle support are fixedly mounted on the base, and the slider is movably installed within the base between the anti-rotation component and the handle support. One end of the ejector rod passes through the anti-rotation component and abuts against the ball bearing bush to be assembled, and is fixedly connected to the end of the male mold core away from the forming part. The other end of the ejector rod is connected to the slider, and the rotary handle passes through the handle support and is threadedly connected to the slider. Rotating the rotary handle sequentially drives the slider, the ejector rod, and the male mold core to move linearly, causing the ball bearing bush to be fitted onto the male mold core.

[0007] By employing the above-mentioned bushing fitting fixture, when the rotating handle is rotated, the slider, ejector rod, and male mold insert can be moved linearly in sequence, causing the ball bearing bushing to be fitted onto the male mold insert. In this way, without damaging the aspherical shape of the male mold insert forming part, not only can an interference fit be formed between the male mold insert and the ball bearing bushing, but the first process positioning groove on the male mold insert and the second process positioning groove on the ball bearing bushing are kept in the same direction, thereby ensuring the forming quality of the aspherical lens.

[0008] Furthermore, it also includes a fastening bolt. The ejector rod includes a first anti-rotation part, a guide part, a second anti-rotation part, a connecting part, and a bolt mounting hole. The first anti-rotation part is a groove that matches the first slot on the male mold insert. The guide part matches the inner bushing of the ball. The cross-section of the second anti-rotation part is square and matches the anti-rotation assembly. The connecting part is a frustum with flat cut surfaces on both sides. The bolt mounting hole is located at the center of the ejector rod and is aligned with the axis of the male mold insert. The fastening bolt passes through the bolt mounting hole and is threadedly connected to the threaded hole on the male mold insert.

[0009] Furthermore, the upper part of the slider is provided with a connecting limiting hole, a limiting through groove and a second through hole in sequence. The width of the limiting hole is greater than the width of the connecting part and less than the outer diameter of the connecting part. The length of the limiting hole is greater than the outer diameter of the connecting part. The depth of the limiting through groove is greater than the thickness of the connecting part. The inner diameter of the second through hole is greater than the outer diameter of the thread of the fastening bolt and less than the outer diameter of the nut of the fastening bolt. The lower part of the slider is provided with a threaded through hole that is adapted to the rotating handle.

[0010] Furthermore, the anti-rotation component includes a stop plate and a sleeve. The sleeve has an anti-rotation through hole that matches the second anti-rotation part. One end of the sleeve has a second limiting part that matches the second slot provided on the inner bushing of the ball bearing. The top surface of the sleeve has first limiting parts at both ends. The two ends of the stop plate have corresponding limiting grooves that match the first limiting parts. The stop plate abuts against the sleeve and can be fixed to the base by bolts.

[0011] Furthermore, the base is provided with sleeve mounting groove, stop plate mounting groove and slider mounting groove respectively adapted to the sleeve, stop plate and slider, and the base is provided with a second clearance groove to avoid the male mold core insert and ball inner bushing.

[0012] Furthermore, the rotary handle is provided with a first limiting ring, a third slot, and a second limiting ring in sequence. The first limiting ring abuts against the side of the handle support, the third slot engages in the U-shaped groove provided in the handle support, and the second limiting ring is adapted to a first clearance groove provided in the handle support. The depth of the first clearance groove is greater than the depth of the U-shaped groove.

[0013] Furthermore, it also includes a guide rod, which passes through the slider and has both ends passing through guide grooves provided on the base.

[0014] Secondly, the present invention provides a bushing removal fixture, which can be used to remove the male mold core insert and the ball bearing inner bushing in an aspherical lens forming mold. The fixture includes an anti-rotation component, a push rod, a slider, a rotating handle, a handle support, a base, and a baffle. The anti-rotation component and the handle support are fixedly mounted on the base. The slider, located between the anti-rotation component and the handle support, is movably installed within the base. The baffle, which abuts against the ball bearing inner bushing to be removed, is inserted into the base. One end of the push rod passes through the anti-rotation component and is fixedly connected to the end of the male mold core insert to be removed away from the forming part. The other end of the push rod is connected to the slider. The rotating handle passes through the handle support and is threadedly connected to the slider. Rotating the rotating handle sequentially moves the slider, the push rod, and the male mold core insert in a straight line, removing the male mold core insert from the ball bearing inner bushing.

[0015] This invention employs the above-mentioned bushing disassembly fixture. When the rotating handle is rotated, the slider, ejector rod, and male mold insert can be moved linearly in sequence, and the male mold insert can be moved out of the ball bushing. In this way, the male mold insert and the ball bushing can be disassembled without damaging the male mold insert and the ball bushing.

[0016] Furthermore, it also includes a fastening bolt. The ejector rod includes a first anti-rotation part, a guide part, a second anti-rotation part, a connecting part, and a bolt mounting hole. The first anti-rotation part is a groove that matches a first slot on the male mold insert. The guide part matches the ball bearing bushing. The second anti-rotation part has a square cross-section. The connecting part connects to the slider. The bolt mounting hole is located at the center of the ejector rod and is aligned with the axis of the male mold insert. The fastening bolt passes through the bolt mounting hole. The mounting hole is threadedly connected to the threaded hole provided on the male mold insert; the anti-rotation component includes a stop plate and a sleeve, the sleeve is provided with an anti-rotation through hole adapted to the second anti-rotation part, one end of the sleeve is provided with a second limiting part adapted to the second slot provided on the inner bushing of the ball bearing, the top surface of the sleeve is provided with first limiting parts at both ends, the two ends of the stop plate are correspondingly provided with limiting grooves adapted to the first limiting parts, the stop plate abuts against the sleeve and can be fixed to the base by bolts.

[0017] Furthermore, the base is provided with a second clearance groove to avoid the male mold core insert and the ball bearing bushing, and the side wall of the second clearance groove is provided with a baffle mounting groove that is adapted to the baffle.

[0018] Compared with existing technologies, the present invention has a reasonable structural design, is easy to operate, and can avoid damage to the male mold insert and the ball bushing, realize the recycling of the male mold insert and the ball bushing, and ensure the forming quality of the aspherical lens. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the fit between the male mold core and the ball bearing bush in an aspherical lens forming mold.

[0020] Figure 2 for Figure 1 A schematic diagram of the male mold core and ball bearing bush in a type of aspherical lens forming mold.

[0021] Figure 3 This is an exploded view of a bushing fitting fixture according to the present invention.

[0022] Figure 4 This is a cross-sectional view of a bushing fitting fixture according to the present invention.

[0023] Figure 5 This is a schematic diagram of the push rod in a bushing fitting fixture of the present invention.

[0024] Figure 6 This is a schematic diagram of the sleeve in a bushing fitting fixture according to the present invention.

[0025] Figure 7 This is a schematic diagram of a slider in a bushing fitting fixture according to the present invention.

[0026] Figure 8 This is a schematic diagram of the base in a bushing fitting fixture according to the present invention.

[0027] Figure 9 This is an exploded view of a bushing removal fixture according to the present invention.

[0028] Figure 10 This is a cross-sectional view of a bushing removal fixture according to the present invention.

[0029] Explanation of the labels in the diagram: 1-Mold insert, 101-First process positioning groove, 102-Forming part, 103-Threaded hole, 104-First retaining groove, 2-Ball bushing, 201-Second process positioning groove, 202-Second retaining groove; 3-Stop plate, 301-Limiting groove, 4-Sleeve, 401-First limiting part, 402-Anti-rotation through hole, 403-Second limiting part, 5-Ejector rod, 501-First anti-rotation part, 502-Guide part, 503-Second anti-rotation part, 504-Connecting part, 505-Bolt mounting hole, 6-Fasting bolt, 7-Slider, 701 - Limiting hole, 702- Threaded through hole, 703- Limiting through groove, 704- First through hole, 705- Second through hole, 8- Guide post, 9- Rotary handle, 901- First limiting ring, 902- Third slot, 903- Second limiting ring, 10- Handle support, 105- U-shaped groove, 106- First clearance groove, 11- Base, 111- Slider mounting groove, 112- Guide groove, 113- Sleeve mounting groove, 114- Stop plate mounting groove, 115- Baffle mounting groove, 116- Second clearance groove, 12- Base, 13- Baffle, 131- Third clearance groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] This invention provides a bushing assembly fixture for assembling the male mold core and the ball bearing bushing in an aspherical lens forming mold; simultaneously, this invention provides a bushing disassembly fixture for disassembling the male mold core and the ball bearing bushing in an aspherical lens forming mold. Before describing the bushing assembly and disassembly fixtures of this invention, it is necessary to first determine the structure of the male mold core and the ball bearing bushing in the aspherical lens forming mold to which this invention is applicable.

[0034] by Figure 1 and Figure 2 Taking the male mold insert 1 and the ball bushing 2 as an example, the male mold insert 1 is provided with a first process positioning groove 101 for aspherical lens forming and assembly positioning, a forming part 102 for aspherical lens forming, and a threaded hole 103 and a first slot 104 for connecting with the drive component in the aspherical lens forming mold. The ball bushing 2 is provided with a second process positioning groove 201 and a second slot 202 for aspherical lens forming and assembly positioning. At the same time, the male mold insert 1 and the ball bushing 2 are interference fit, and the first process positioning groove 101 on the male mold insert 1 and the second process positioning groove 201 on the ball bushing 2 are required to be in the same direction.

[0035] To facilitate the assembly and disassembly of the male mold insert 1 and the ball bearing inner bushing 2, this embodiment of the invention provides a bushing assembly fixture and a bushing disassembly fixture, as detailed below.

[0036] like Figures 3 to 8The diagram shows a schematic of a bushing assembly fixture, which can be used to assemble the male mold core 1 and the ball bearing inner bushing 2 in the aforementioned aspherical lens forming mold. Specifically, the bushing assembly fixture provided in this embodiment includes an anti-rotation component, a push rod 5, a slider 7, a rotating handle 9, a handle support 10, and a base 11. The anti-rotation component and the handle support 10 are bolted to the base 11, and a slider 7 is movably installed within the base 11 between the anti-rotation component and the handle support 10. One end of the push rod 5 passes through the anti-rotation component and abuts against the ball bearing inner bushing 2 to be assembled, and is detachably connected to the end of the male mold core 1 to be assembled away from the forming part 102. The other end of the push rod 5 is detachably connected to the slider 7, and the rotating handle 9 passes through the handle support 10 and is threadedly connected to the slider 7.

[0037] In this embodiment of the invention, since the anti-rotation component, the handle support 10 and the base 11 are fixedly connected and the ball bushing 2 abuts against the anti-rotation component, when the rotating handle 9 is rotated counterclockwise, the slider 7 in the base 11 can be driven to move backward in a straight line, which in turn drives the push rod 5 connected to the slider 7 to move backward in a straight line within the anti-rotation component and the ball bushing 2, thereby driving the male mold insert 1 connected to the push rod 5 to move backward in a straight line until the ball bushing 2 is fitted onto the male mold insert 1.

[0038] As a further improvement of this embodiment of the invention, the bushing fitting fixture also includes a fastening bolt 6, which can fasten the ejector rod 5 to the male mold insert 1 so that when the ejector rod 5 moves backward in a straight line, it can also drive the male mold insert 1 to move backward in a straight line. Specifically, the ejector rod 5 includes a first anti-rotation part 501, a guide part 502, a second anti-rotation part 503, a connecting part 504, and a bolt mounting hole 505. The first anti-rotation part 501 is configured as a groove and is adapted to the first slot 104 on the male mold insert 1. When the first anti-rotation part 501 on the ejector rod 5 engages with the first slot 104 on the male mold insert 1, it can prevent the male mold insert 1 from rotating and keep the direction of the first process positioning groove 101 on the male mold insert 1 unchanged. The guide part 502 is adapted to the ball inner bushing 2, and the outer diameter of the guide part 502 is slightly smaller than the inner diameter of the ball inner bushing 2, so that the guide part 502 of the ejector rod 5 can pass through the ball inner bushing 2. The cross-section of the second anti-rotation part 503 is configured as a square and is adapted to the anti-rotation component. At the same time, the cross-sectional area of ​​the second anti-rotation part 503 is slightly smaller than the cross-sectional area of ​​the mating part of the anti-rotation component, so that the second anti-rotation part 503 of the ejector rod 5 can pass through the anti-rotation component and ensure that the first process positioning groove 101 on the male mold insert 1 remains unchanged. The second anti-rotation part 503 will not rotate within the anti-rotation assembly, thereby ensuring that the male mold insert 1 does not rotate, and thus ensuring that the direction of the first process positioning groove 101 on the male mold insert 1 remains unchanged; the connecting part 504 is configured as a frustum shape with flat cut surfaces on both sides, similar to a "waist shape", and the width between the two flat cut surfaces of the connecting part 504 is slightly greater than the diagonal length of the second anti-rotation part 503, and the outer diameter of the connecting part 504 is 1.2-1.5 times the diagonal length of the second anti-rotation part 503; the bolt mounting hole 505 is located at the center of the ejector rod 5 and is aligned with the axis of the male mold insert 1, so that the fastening bolt 6 can pass through the bolt mounting hole 505 and be threadedly connected to the threaded hole 103 on the male mold insert 1, thereby ensuring that the ejector rod 5 and the male mold insert 1 are tightly connected.

[0039] In other embodiments of the invention, the cross-section of the second anti-rotation part 503 can be set as a polygon or other shapes, as long as it can ensure that the push rod 5 does not rotate during assembly. The structure of the connecting part 503 can also be set as other structural forms, as long as it can ensure that the push rod 5 and the slider 7 are detachably connected and that the slider 7 can drive the push rod 5 to move linearly during assembly.

[0040] As a further improvement of this embodiment of the invention, the anti-rotation component includes a stop plate 3 and a sleeve 4. The sleeve 4 is provided with an anti-rotation through hole 402 that matches the second anti-rotation part 503 on the push rod 5. Specifically, the cross-section of the anti-rotation through hole 402 is also square, and the cross-sectional area of ​​the anti-rotation through hole 402 is slightly larger than the cross-sectional area of ​​the second anti-rotation part 503. One end of the sleeve 4 near the inner ball bushing 2 is provided with a second limiting part 403 that matches the second slot 202 on the inner ball bushing 2, so that the second limiting part 403 of the sleeve 4 can be embedded into the second slot 202 on the inner ball bushing 2, thereby ensuring that the inner ball bushing 2 does not rotate and that the direction of the second process positioning groove 201 on the inner ball bushing 2 remains unchanged. The top surface of the sleeve 4 is provided with a second... A limiting part 401 is provided at both ends of the stop plate 3, and a limiting groove 301 is provided to match the first limiting part 401. That is, the first limiting part 401 on the sleeve 4 can be engaged with the limiting groove 301 on the stop plate 3. When the stop plate 3 abuts against the upper surface of the sleeve 4 and is fixedly installed on the base 11 by bolts, the anti-rotation component can be fixedly installed on the base 11. When the push rod 5 moves backward in a straight line and drives the male mold core insert 1 to also move backward in a straight line, it can ensure that the anti-rotation component and the ball inner bushing 2 abutting against the anti-rotation component do not move with it, so that the male mold core insert 1 moves backward in a straight line relative to the ball inner bushing 2 until the ball inner bushing 2 is fitted onto the male mold core insert 1.

[0041] In other embodiments of the invention, the anti-rotation component can be configured in other structural forms, such as the anti-rotation component only including a sleeve that can be fastened to the base by bolts, or the anti-rotation component only including a sleeve that can be inserted into the base, or adopting other existing technologies or conventional technical means to improve the structural form, as long as it can ensure that when the ejector rod 5 moves backward in a straight line during the assembly process, causing the male mold core insert 1 to also move backward in a straight line, the anti-rotation component and the ball bushing 2 abutting against the anti-rotation component do not move accordingly.

[0042] As a further improvement of this embodiment of the invention, the upper part of the slider 7 is sequentially provided with a connecting limiting hole 701, a limiting through groove 703, and a second through hole 705, and the lower part of the slider 7 is provided with a threaded through hole 702 adapted to the rotating handle 9. Specifically, the limiting hole 701 is located near one end of the push rod 5 and has a rectangular cross-section. The width of the limiting hole 701 is greater than the width of the connecting part 504 on the push rod 5 and less than the outer diameter of the connecting part 504. The length of the limiting hole 701 is greater than the outer diameter of the connecting part 504, so that the connecting part 504 of the push rod 5 can be inserted into the limiting hole 701. The two ends of the limiting through groove 703 extend to both sides of the slider 7 and have a rectangular cross-section. The depth of the limiting through groove 703 is slightly greater than the thickness of the connecting part 504 on the push rod 5, so that the connecting part 504 of the push rod 5 can be inserted into the limiting hole 701. After entering the limiting through groove 703, rotating 90° allows the "waist" of the connecting part 504 to abut against the front and rear side walls of the limiting through groove 703, thereby preventing the connecting part 504 of the push rod 5 from disengaging from the slider 7 and ensuring that the push rod 5 can move backward in a straight line with the slider 7; the axis of the second through hole 705 is consistent with the axis of the push rod 5 and can extend to the other end of the slider 7. The inner diameter of the second through hole 705 is larger than the outer diameter of the thread of the fastening bolt 6 and smaller than the outer diameter of the nut of the fastening bolt 6, so that the extension rod of the torque wrench can pass through the second through hole 705 and tighten the fastening bolt 6.

[0043] As a further improvement of the present invention, the base 11 is provided with a connected slider mounting groove 111, a sleeve mounting groove 113, a stop plate mounting groove 114, and a second clearance groove 116. Specifically, the slider mounting groove 111 is located on the base 11 at one end away from the male mold insert 1 and is open. The width of the slider mounting groove 111 is slightly larger than the width of the slider 7 and the length of the slider mounting groove 111 is greater than the stroke of the slider 7 or greater than the length of the ball bushing 2, so that the slider 7 can move backward in a straight line within the slider mounting groove 111. The sleeve mounting groove 113 is adapted to the shape of the sleeve 4, and the stop plate mounting groove 114 is adapted to the shape of the stop plate 3, so that the sleeve 4 and the stop plate 3 can be sequentially engaged in the base 11, and then the anti-rotation component is fixedly connected to the base 11 by bolts. The second clearance groove 116 is located on the base 11 at one end near the male mold insert 1 and is open, so as to avoid the male mold insert 1 and the ball bushing 2.

[0044] As a further improvement of this embodiment of the invention, the handle support 10 is provided with a U-shaped groove 105 and a first clearance groove 106. The handle support 10 can be fixedly installed on the base 11 at the end away from the male mold insert 1 by bolts, so as to support and limit the rotation handle 9. The rotation handle 9 is provided with an anti-slip handle part, a first limiting ring 901, a third locking groove 902, a second limiting ring 903 and a threaded connection part in sequence. Specifically, the anti-slip handle part is cylindrical and provided with anti-slip texture to facilitate the rotation of the rotation handle 9; the first limiting ring 901 is cylindrical and can abut against the side of the handle support 10 to prevent the rotation handle 9 from moving back and forth during the rotation of the rotation handle 9; the third locking groove 902 is cylindrical and the outer diameter of the third locking groove 902 is slightly smaller than the width of the U-shaped groove 105 on the handle support 10 and the length of the third locking groove 902 is slightly larger than the depth of the U-shaped groove 105, so as to facilitate the insertion of the third locking groove 902 into the U-shaped groove 105 of the handle support 10; the second The limiting ring 903 is cylindrical. The outer diameter of the second limiting ring 903 is larger than the outer diameter of the third slot 902 and is adapted to the first clearance slot 106 on the handle support 10 to limit the rotation handle 9 and prevent the rotation handle 9 from moving back and forth during rotation. The threaded connection part is adapted to the threaded through hole 702 on the slider 7 so that the rotation handle 9 and the slider 7 can be threadedly connected. At the same time, in order to ensure that the ball bushing 2 can be fitted on the male mold insert 1, the length of the threaded connection part is greater than the stroke of the slider 7 or greater than the length of the ball bushing 2.

[0045] As a further improvement of this embodiment of the invention, the bushing fitting fixture also includes two cylindrical guide rods 8. Correspondingly, two through holes 704 are provided on the slider 7, and through guide grooves 112 are provided on both sides of the slider mounting groove 111 on the base 11. The guide rods 8 can pass through the first through holes 704 on the slider 7 and both ends can pass through the guide grooves 112 on the base 11 to ensure that the slider 7 moves backward in a straight line within the slider mounting groove 111 without deviation or deflection, thereby ensuring that the ejector rod 5 and the male mold insert 1 move backward in a straight line. At the same time, in order to ensure that the ball bushing 2 can be fitted onto the male mold insert 1, the length of the guide groove 112 is greater than the sum of the distance between the two guide rods 8 and the stroke of the slider 7.

[0046] In other embodiments of the invention, the guide structure of the slider 7 can be set to other structural forms, such as the form of a slide rail and a slider, or the form of a keyway and a guide key, as long as it can ensure that the slider 7 moves backward in a straight line within the slider mounting groove 111 without offset or deflection.

[0047] As a further improvement of the embodiment of the present invention, the bushing fitting fixture also includes a base 12, which can be fixedly connected to the base 11 by bolts, so as to make the structure of the bushing fitting fixture more stable.

[0048] The bushing assembly fixture provided in this embodiment of the invention operates as follows:

[0049] A ball bearing bush 2 is fitted onto the end of the male mold insert 1 furthest from the forming part 102. The sleeve 4 and the stop plate 3 in the anti-rotation assembly are sequentially fixed on the base 11, with the second limiting part 403 on the sleeve 4 embedded in the second slot 202 on the ball bearing bush 2. The fastening bolt 6 is fitted into the bolt mounting hole 505 of the ejector rod 5. The connecting part 504 of the ejector rod 5 is inserted into the limiting through groove 703 of the slider 7. The ejector rod 5 is sequentially passed through the sleeve 4 and the ball bearing bush 2, with the first anti-rotation part 501 on the ejector rod 5 engaging with the first slot 104 on the male mold insert 1, so as to ensure that the first process positioning groove 101 on the male mold insert 1 engages with the first process positioning groove 104 on the ball bearing bush 2. The second process positioning groove 201 is kept in the same direction. The rotating handle 9 is installed on the slider 7, and the handle support 10 is fixedly installed on the base 11 so that the rotating handle 9 is inserted into the handle support 10. The fastening bolt 6 is tightened through the second through hole 705 on the slider 7 to make the ejector rod 5 and the male mold insert 1 securely connected. The guide rod 8 is inserted into the slider 7. Rotating the rotating handle 9 counterclockwise can drive the slider 7 in the base 11 to move backward in a straight line. Then, the ejector rod 5 connected to the slider 7 moves backward in a straight line within the anti-rotation component and the ball bushing 2. This, in turn, drives the male mold insert 1 connected to the ejector rod 5 to move backward in a straight line until the ball bushing 2 is interference-fitted onto the male mold insert 1.

[0050] like Figures 5 to 10 The diagram shows a schematic of a bushing removal fixture, which can be used to remove the male mold core 1 and the ball bearing inner bushing 2 in the aforementioned aspherical lens forming mold. Specifically, the bushing removal fixture provided in this embodiment of the invention includes an anti-rotation component, a push rod 5, a slider 7, a rotating handle 9, a handle support 10, a base 11, and a baffle 13. The bushing removal fixture is basically the same as the bushing assembly fixture described above, except that: the bushing removal fixture is equipped with a baffle 13, which can abut against the inner ball bushing 2 to be removed and can be supported on the base 11 to prevent the inner ball bushing 2 from moving back and forth; at the same time, baffle mounting grooves 115 adapted to the baffle 13 are provided on both sides of the first clearance groove 116 of the base 11, so as to facilitate the insertion of the baffle mounting groove 115 into the baffle mounting groove 115; in addition, a third clearance groove 131 is provided on the baffle 13 to avoid the male mold insert 1 and facilitate the forward movement of the male mold insert 1. The structural features and functions of other components will not be described in detail here.

[0051] The bushing disassembly fixture provided in this embodiment of the invention has a structure that is basically the same as the bushing assembly fixture described above. In this way, the same fixture can be used to assemble or disassemble the male mold core 1 and the ball inner bushing 2, thereby greatly saving the fixture manufacturing cost and ensuring the assembly accuracy of the male mold core 1 and the ball inner bushing 2, as well as avoiding damage to the male mold core 1 and the ball inner bushing 2 during disassembly.

[0052] The bushing disassembly fixture provided in this embodiment of the invention operates as follows:

[0053] The sleeve 4 and the stop plate 3 of the anti-rotation assembly are sequentially fixed on the base 11, with the second limiting part 403 on the sleeve 4 embedded in the second slot 202 on the ball inner bushing 2. The fastening bolt 6 is inserted into the bolt mounting hole 505 of the ejector rod 5, and the connecting part 504 of the ejector rod 5 is inserted into the limiting through groove 703 of the slider 7. The ejector rod 5 passes through the sleeve 4, and the first anti-rotation part 501 on the ejector rod 5 engages with the first slot 104 on the male mold insert 1 to ensure that the first process positioning groove 101 on the male mold insert 1 and the second process positioning groove 201 on the ball inner bushing 2 are in the same direction. The baffle 13 is inserted into the base 11. Install the rotating handle 9 on the slider 7, fix the handle support 10 on the base 11 and make the rotating handle 9 snap into the handle support 10. Tighten the fastening bolt 6 through the second through hole 705 on the slider 7 to make the ejector rod 5 and the male mold insert 1 securely connected. Insert the guide rod 8 into the slider 7. Rotating the rotating handle 9 clockwise can drive the slider 7 in the base 11 to move forward in a straight line. Then, it will drive the ejector rod 5 connected to the slider 7 to move forward in a straight line in the anti-rotation assembly. This will drive the male mold insert 1 connected to the ejector rod 5 to move forward in a straight line until the male mold insert 1 is removed from the ball bushing 2, thus completing the disassembly of the male mold insert 1 and the ball bushing 2.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A bushing assembly fixture, which can be used for assembling the male mold core insert (1) and the ball inner bushing (2) in an aspherical lens forming mold, characterized in that: The assembly includes an anti-rotation component, a push rod (5), a slider (7), a rotating handle (9), a handle support (10), and a base (11). The anti-rotation component and the handle support (10) are fixedly mounted on the base (11), and the slider (7) is movably installed between the anti-rotation component and the handle support (10) inside the base (11). One end of the push rod (5) passes through the anti-rotation component and the ball bushing (2) to be assembled against the anti-rotation component, and can be fixedly connected to the end of the male mold insert (1) to be assembled away from the forming part (102). The other end of the push rod (5) is connected to the slider (7), and the rotating handle (9) passes through the handle support (10) and is threadedly connected to the slider (7). Rotating the rotating handle (9) can sequentially drive the slider (7), the push rod (5), and the male mold insert (1) to move linearly and cause the ball bushing (2) to be fitted onto the male mold insert (1). It also includes a fastening bolt (6). The push rod (5) includes a first anti-rotation part (501), a guide part (502), a second anti-rotation part (503), a connecting part (504), and a bolt mounting hole (505). The first anti-rotation part (501) is a groove and is adapted to the first slot (104) provided on the male mold insert (1). The guide part (502) is adapted to the ball inner bushing (2). The cross-section of the second anti-rotation part (503) is square and is adapted to the anti-rotation component. The connecting part (504) is a frustum and has flat cut surfaces on both sides. The bolt mounting hole (505) is located at the center of the push rod (5) and is consistent with the axis of the male mold insert (1). The fastening bolt (6) passes through the bolt mounting hole (505) and is threadedly connected to the threaded hole (103) provided on the male mold insert (1).

2. The bushing fitting fixture according to claim 1, characterized in that: The upper part of the slider (7) is provided with a connecting limiting hole (701), a limiting through groove (703) and a second through hole (705). The width of the limiting hole (701) is greater than the width of the connecting part (504) and less than the outer diameter of the connecting part (504). The length of the limiting hole (701) is greater than the outer diameter of the connecting part (504). The depth of the limiting through groove (703) is greater than the thickness of the connecting part (504). The inner diameter of the second through hole (705) is greater than the outer diameter of the thread of the fastening bolt (6) and less than the outer diameter of the nut of the fastening bolt (6). The lower part of the slider (7) is provided with a threaded through hole (702) that is compatible with the rotating handle (9).

3. The bushing fitting fixture according to claim 1, characterized in that: The anti-rotation assembly includes a stop plate (3) and a sleeve (4). The sleeve (4) is provided with an anti-rotation through hole (402) that is adapted to the second anti-rotation part (503). One end of the sleeve (4) is provided with a second limiting part (403) that is adapted to the second slot (202) provided on the inner bushing of the ball bearing (2). The top surface of the sleeve (4) is provided with a first limiting part (401) at both ends. The two ends of the stop plate (3) are provided with limiting grooves (301) that are adapted to the first limiting part (401). The stop plate (3) abuts against the sleeve (4) and can be fixed to the base (11) by bolts.

4. The bushing assembly fixture according to claim 3, characterized in that: The base (11) is provided with a sleeve mounting groove (113) and a stop plate mounting groove (114) respectively adapted to the sleeve (4) and the stop plate (3), and the base (11) is provided with a second clearance groove (116) to avoid the male mold core insert (1) and the ball inner bushing (2).

5. The bushing fitting fixture according to claim 1, characterized in that: The rotary handle (9) is provided with a first limiting ring (901), a third slot (902), and a second limiting ring (903) in sequence. The first limiting ring (901) abuts against the side of the handle support (10). The third slot (902) engages in the U-shaped groove (105) provided on the handle support (10). The second limiting ring (903) is adapted to the first clearance groove (106) provided on the handle support (10). The groove depth of the first clearance groove (106) is greater than the groove depth of the U-shaped groove (105).

6. The bushing assembly fixture according to any one of claims 1 to 5, characterized in that: It also includes a guide rod (8), which passes through the slider (7) and has both ends passing through guide grooves (112) provided on the base (11).

7. A bushing disassembly fixture, which can be used to disassemble the male mold core insert (1) and the ball bearing inner bushing (2) in an aspherical lens forming mold, characterized in that: The system includes an anti-rotation component, a push rod (5), a slider (7), a rotating handle (9), a handle support (10), a base (11), and a baffle (13). The anti-rotation component and the handle support (10) are fixedly mounted on the base (11). The slider (7) is movably installed inside the base (11) between the anti-rotation component and the handle support (10). The baffle (13) is inserted inside the base (11) and abuts against the inner bushing (2) of the ball bearing to be disassembled. The push rod (5) One end of the rod (5) passes through the anti-rotation component and is fixedly connected to the end of the male mold insert (1) to be disassembled away from the molding part (102). The other end of the push rod (5) is connected to the slider (7). The rotating handle (9) passes through the handle support (10) and is threadedly connected to the slider (7). Rotating the rotating handle (9) can sequentially drive the slider (7), the push rod (5) and the male mold insert (1) to move in a straight line and move the male mold insert (1) out of the ball bushing (2). It also includes a fastening bolt (6). The push rod (5) includes a first anti-rotation part (501), a guide part (502), a second anti-rotation part (503), a connecting part (504), and a bolt mounting hole (505). The first anti-rotation part (501) is a groove and is adapted to the first slot (104) provided on the male mold insert (1). The guide part (502) is adapted to the ball inner bushing (2). The cross-section of the second anti-rotation part (503) is square. The connecting part (504) is connected to the slider (7). The bolt mounting hole (505) is located at the center of the push rod (5) and is aligned with the axis of the male mold insert (1). The fastening bolt (6) passes through the bolt mounting hole. 505) and threadedly connected to the threaded hole (103) provided on the male mold insert (1); the anti-rotation assembly includes a stop plate (3) and a sleeve (4), the sleeve (4) is provided with an anti-rotation through hole (402) adapted to the second anti-rotation part (503), one end of the sleeve (4) is provided with a second limiting part (403) adapted to the second slot (202) provided on the ball inner bushing (2), the top surface of the sleeve (4) is provided with a first limiting part (401) at both ends, the two ends of the stop plate (3) are correspondingly provided with limiting grooves (301) adapted to the first limiting part (401), the stop plate (3) abuts against the sleeve (4) and can be fixed to the base (11) by bolts.

8. The bushing removal fixture according to claim 7, characterized in that: The base (11) is provided with a second clearance groove (116) to avoid the male mold core insert (1) and the ball inner bushing (2). The side wall of the second clearance groove (116) is provided with a baffle mounting groove (115) that is adapted to the baffle (13).

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