TV lens mold

Abstract

The invention relates to the technical field of lens production, and particularly discloses a TV lens mold which comprises a base, an upper mold base, an upper mold core, a lower mold base and a lower mold core, and placing grooves are formed in the sides, close to each other, of the lower mold core and the upper mold core; the wedge block is located in the placing groove, and a cavity is formed in the end; the abutting and pressing mechanism comprises an abutting and pressing block, a first spring and a driving assembly, the abutting and pressing block is arranged on the upper mold core in a sliding mode, one end of the abutting and pressing block can slide into the containing groove, a first inclined face is arranged on the abutting and pressing block, and a containing groove is formed in a wedge block in the containing groove in the upper mold core; the bottom wall of the containing groove is obliquely arranged and can abut against the first inclined face on the abutting block, the first spring is connected between the abutting block and the upper mold core, and the driving assembly is used for driving the abutting block to slide towards the side close to the containing groove. The wedge block is detachably arranged in a sliding manner, so that the requirement that the mold needs to be adjusted for multiple times in the TV lens injection molding process can be met.

Description

Technical Field

[0001] The present application relates to the technical field of lens production, and in particular to a TV lens mold. Background Art

[0002] Lenses are optical components made of transparent materials with a spherical surface. Lenses include plastic lenses and glass lenses. They can be widely used in security, automotive, digital cameras, lasers, optical instruments and other fields. TV lenses are one of them. TV lenses are also called television lenses. They are optical components specially used in TV backlight modules. They are mainly used in LCD TVs with LED backlight sources to adjust light distribution and improve brightness and uniformity.

[0003] TV lenses require a small amount of test production before mass production. After the lens parameters are selected, they need to be injection molded. According to the optical parameters of the produced TV lenses, it is generally necessary to modify them back and forth many times to ensure that the molded TV lenses meet the design requirements. During the multiple modifications of the TV lenses, the molds corresponding to the TV lenses also need to be modified synchronously to ensure that the lens molding parameters meet the design requirements. Therefore, a TV lens mold that meets the above requirements is needed. Summary of the invention

[0004] In order to facilitate modification of a mold used to produce a TV lens, the present application provides a TV lens mold.

[0005] The TV lens mold provided in this application adopts the following technical solution: A TV lens mold, comprising: Pedestal; An upper mold base is slidably disposed on the base, and an upper mold core is fixedly connected to the upper mold base; A lower mold base is fixedly arranged on the base, a lower mold core is fixedly connected to the lower mold base, and a plurality of placement grooves are provided on the side where the lower mold core and the upper mold core are close to each other; A wedge block is located in the placement groove, the wedge block can slide along the groove depth direction of the placement groove, and the end of the wedge block is provided with a cavity for molding the lens; The pressing mechanism is provided with two groups, which are respectively located on the upper mold base and the lower mold base, and are used to press the wedge blocks on the upper mold core and the lower mold core tightly in the placement groove; The pressing mechanism on the upper mold core includes a pressing block, a first spring and a driving assembly, the number of the pressing blocks is the same as the number of wedge blocks, each of the pressing blocks corresponds to a wedge block, the pressing block is slidably arranged on the upper mold core, the sliding direction of the pressing block is perpendicular to the sliding direction of the upper mold core, one end of the pressing block can slide into the placement groove, the pressing block is provided with a first inclined surface, the wedge block in the placement groove on the upper mold core is provided with a receiving groove, the bottom wall of the receiving groove is inclined and can be against the first inclined surface on the pressing block, so that the pressing block can push the wedge block to slide toward the inside of the placement groove when sliding, the first spring is connected between the pressing block and the upper mold core, the first spring makes the pressing block have a tendency to slide toward the side away from the placement groove, and the driving assembly is arranged on the upper mold base, for driving the pressing block to slide toward the side close to the receiving groove.

[0006] By adopting the above technical solution, after the pressing mechanism presses and fixes the wedge block, the TV lens can be injection molded. After the molding is completed, the pressing mechanism can cancel the contact of the wedge block and take out the wedge block. According to the molded lens, the cavity on the wedge block can be reprocessed or replaced with a new wedge block for re-injection molding. Therefore, the sliding and detachable setting of the wedge block facilitates the modification of the mold, thereby adapting to the need for multiple reciprocating modifications during the production process of the TV lens.

[0007] Optionally, a plurality of the wedge blocks are arranged in a circular array.

[0008] By adopting the above technical solution, high temperature plastic can flow into each cavity more evenly, thereby ensuring the molding quality.

[0009] Optionally, the driving assembly includes a first power telescopic member, a first connecting ring and a first connecting plate, the first power telescopic member is fixedly connected to the upper mold base, the first power telescopic member is arranged along the sliding direction of the upper mold base, the first connecting ring is sleeved on the outer side of the upper mold core, the first connecting ring is fixedly connected to the movable end of the first power telescopic member, the first connecting plate is fixedly connected to the first connecting ring, the number of the first connecting plates is the same as the number of the pressure blocks, each of the first connecting plates corresponds to a pressure block, and the first connecting plate and the corresponding pressure block are close to each other. A second inclined surface is provided on the side so that when the first connecting plate slides, the pressure block can be pushed to slide to the side close to the placement groove.

[0010] By adopting the above technical solution, when the movable end of the first power telescopic member slides, the first connecting ring can be driven to slide, and the first connecting ring drives the first connecting plate to slide until the second inclined surface on the first connecting plate abuts against the second inclined surface on the pressing block, and then with the vertical sliding of the first connecting plate, the pressing block can slide horizontally until the first inclined surface on the pressing block abuts against the inner wall of the accommodating groove on the wedge block, and with the horizontal sliding of the pressing block, the wedge block can slide upward, thereby pressing the wedge block tightly in the placement groove to complete the fixation of the wedge block; since a plurality of first connecting plates are provided, the pressing and fixing of a plurality of wedge blocks can be completed at the same time, which helps to reduce the number of power sources.

[0011] Optionally, the depth of the placement grooves on the upper die and the lower die is greater than the height of the wedge block, a first filling block is arranged between the bottom wall of the placement groove on the upper die and the corresponding wedge block, and a second filling block is arranged between the bottom wall of the placement groove on the lower die and the corresponding wedge block, and a push assembly is arranged in the first filling block and the second filling block, and the push assembly is used to push the wedge block in the placement groove outward.

[0012] By adopting the above technical solution, after the wedge block is installed in the placement groove and fixed tightly, the end of the wedge block is flush with the bottom wall of the upper mold core or the top wall of the lower mold core. When the pressing mechanism cancels the tight pressure on the wedge block, the pushing assembly can push the wedge block in the placement groove outward, so that the end of the wedge block exceeds the bottom wall of the upper mold core or the top wall of the lower mold core by a certain distance, thereby facilitating the operator to hold the end of the wedge block and pull the wedge block outward, thereby realizing the removal of the wedge block.

[0013] Optionally, a give-way groove is provided on the wedge block in the placement groove on the upper mold core, and a temporary support assembly is provided on the first filling block, and the temporary support assembly includes a fixed plate, a movable plate and a second spring, the fixed plate is fixedly connected to the first filling block, the movable plate is located on the side of the fixed plate close to the give-way groove, one end of the movable plate is slidably arranged in the fixed plate, the second spring is connected between the fixed plate and the movable plate, the second spring makes the movable plate press against the inner wall of the give-way groove, and a third inclined surface is provided on the end of the movable plate close to the give-way groove so that the movable plate can be pushed to slide when the wedge block slides.

[0014] By adopting the above technical solution, after the wedge block is installed in the placement groove on the upper mold core, the movable plate is pressed against the give-way groove on the wedge block, thereby limiting the sliding of the wedge block in the vertical direction, thereby preventing the wedge block from escaping from the placement groove on the upper mold core. Therefore, each wedge block can be inserted into the placement groove in turn and then pressed and fixed uniformly. During the process of pressing and fixing the wedge block, there is no need to hold the wedge block with the hand all the time, and the operation process is simpler. After the TV lens is formed, the TV lens can be removed, and then the pressing of the wedge block is cancelled. Under the action of the push assembly, , which can make the wedge block move downward. At this time, the movable block is pressed against one end of the yield groove, and the wedge block can still be limited to prevent the wedge block from falling directly from the placement groove. Therefore, it is convenient for the operator to take out each wedge block in turn, and the wedge block can be prevented from falling directly and causing damage to the wedge block. In addition, when the first filling block slides horizontally, it can drive the fixed plate to slide. Since the movable plate and the fixed plate are connected by a second spring, during the sliding process of the first filling block, the movable plate can always be pressed against the yield groove on the wedge block, thereby preventing the wedge block from falling out of the placement groove.

[0015] Optionally, the first filling block is slidably arranged on the upper mold core, and the sliding direction of the first filling block is perpendicular to the sliding direction of the wedge block. A third spring is arranged between the first filling block and the upper mold core, and the third spring makes the first filling block tend to slide toward the side away from the placement groove. A sliding component is arranged on the upper mold base, and the sliding component is used to drive the first filling block to slide toward the side close to the placement groove.

[0016] By adopting the above technical solution, during injection molding, one end of the first filling block is located inside the placement groove, and the top end of the wedge block is pressed against the first filling block. At this time, the bottom end of the wedge block is flush with the bottom wall of the upper mold core, thereby facilitating the smooth progress of the TV lens molding process; after the lens is molded, the first filling block can be slid out of the placement groove, and at this time, an escape space can be provided for the upward movement of the wedge block. The wedge block can continue to move upward so that the bottom end of the wedge block is higher than the bottom wall of the upper mold core. Since the lens cannot move upward, the lens and the wedge block can be separated, thereby realizing the demolding of the lens.

[0017] Optionally, a fourth inclined surface is provided at the end of the first filling block, so that when the first filling block slides toward the side close to the placement groove, the fourth inclined surface on the first filling block abuts against the end of the wedge block, and the first filling block can push the wedge block to slide toward the outside of the placement groove.

[0018] By adopting the above technical solution, the wedge block needs to be moved up a certain distance during demoulding. Since the fourth inclined surface is provided on the first filling block, after demoulding, when the first filling block slides toward the side close to the placement groove, the horizontally sliding first filling block can make the wedge block move down to avoid it, which helps the first filling block to slide horizontally smoothly. When the end of the first filling block slides into the placement groove, the push assembly can push the wedge block downward, so that the bottom end of the wedge block extends beyond the bottom wall of the upper mold core for a certain distance, which is convenient for the subsequent manual extraction of the wedge block.

[0019] Optionally, the sliding assembly includes a second power telescopic member, a second connecting ring and a second connecting plate, the second power telescopic member is fixedly connected to the upper mold base, the second power telescopic member is arranged along the sliding direction of the upper mold base, the second connecting ring is sleeved on the outer side of the upper mold core, the second connecting ring is fixedly connected to the movable end of the second power telescopic member, the second connecting plate is fixedly connected to the second connecting ring, the number of the second connecting plates is the same as the number of the first filling blocks, each of the second connecting plates corresponds to a first filling block, and a fifth inclined surface is provided on the side where the second connecting plate and the first filling block are close to each other, so that when the second connecting plate slides, it can push the first filling block to slide to the side close to the placement groove.

[0020] By adopting the above technical solution, the second power telescopic member drives the second connecting ring and the second connecting plate to slide vertically. With the cooperation of the fifth inclined surface on the second connecting plate and the fifth inclined surface on the first filling block, the vertical sliding of the second connecting plate can drive the first filling block to slide horizontally, thereby realizing the adjustment of the position of the first filling block; since there are multiple second connecting plates, multiple first filling blocks can slide synchronously, and the structure is simpler.

[0021] Optionally, the first connecting plates and the second connecting plates are respectively located at two ends of the wedge block, so that a plurality of first connecting plates and a plurality of second connecting plates are staggered.

[0022] By adopting the above technical solution, the first connecting plate and the second connecting plate are less likely to interfere with each other during the movement, which can reduce the occupied space of the structure and make the structure more compact.

[0023] Optionally, a shell is provided on the upper mold core, and the shell cover is arranged on the outside of the driving component and the sliding component.

[0024] By adopting the above technical solution, the housing can protect the driving component and the sliding component, which helps to extend the service life.

[0025] In summary, this application includes the following beneficial technical effects: 1. The wedge block can be detachably connected to the upper mold core and the lower mold core. Therefore, after the injection molding is completed, the wedge block can be quickly removed, the cavity on the wedge block can be reprocessed or a new wedge block can be directly replaced. Therefore, it can adapt to the need to adjust the mold multiple times during the injection molding process of the TV lens.

[0026] 2. The first power telescopic member drives the first connecting ring and the first connecting plate to slide vertically, which can make the multiple pressing blocks slide horizontally, thereby making the corresponding wedge blocks slide vertically, so that multiple wedge blocks can be pressed at the same time, which helps to reduce the number of power sources and save more energy.

[0027] 3. The first filling block is set to slide out of the placement groove to provide an escape space for the upward movement of the wedge block, so that the wedge block can be moved upward, thereby separating the wedge block from the TV lens and completing the demoulding process of the TV lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 Schematic diagram of the structure after the upper mold base and the lower mold base are separated in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the embodiment of the present application after the housing is hidden; Figure 4 is a schematic diagram of the structure of the TV lens after molding in the embodiment of the present application; Figure 5 is a cross-sectional view of an embodiment of the present application; Figure 6 It is an enlarged schematic diagram of point A in the embodiment of the present application; Figure 7 It is an enlarged schematic diagram of point B in the embodiment of the present application; Figure 8 is a cross-sectional view of the embodiment of the present application when the pressing mechanism does not press the wedge tightly; Fig. 9 is a cross-sectional view after the demoulding process of the TV lens is completed in the embodiment of the present application; Fig.10 It is a schematic diagram of the structure of the upper mold core and the lower mold core in the embodiment of the present application; Fig.11 It is a schematic diagram of the structure of the embodiment of the present application after the upper mold core is hidden.

[0029] Figure numerals: 1, base; 2, upper mold base; 3, upper mold core; 31, first slide groove; 32, second slide groove; 33, third slide groove; 4, lower mold base; 5, lower mold core; 6, placement groove; 61, accommodating groove; 7, wedge block; 71, cavity; 72, accommodating groove; 73, yielding groove; 8, pressing mechanism; 81, pressing block; 811, first inclined surface; 812, first mounting plate; 82, first spring; 83, driving assembly; 831, first power telescopic member; 832, first connecting ring; 833, first connecting plate; 8331, second inclined surface; 9, first filling block ; 91. fourth inclined plane; 92. mounting groove; 93. second mounting plate; 10. second filling block; 11. push assembly; 111. push rod; 112. fourth spring; 12. temporary support assembly; 121. fixed plate; 1211. rectangular groove; 122. movable plate; 1221. third inclined plane; 123. second spring; 13. third spring; 14. sliding assembly; 141. second power telescopic member; 142. second connecting ring; 143. second connecting plate; 1431. fifth inclined plane; 15. housing; 16. lens; 17. connecting part; 18. flow channel. DETAILED DESCRIPTION

[0030] The following combination Figure 1-Figure 11 This application is described in further detail.

[0031] Reference Figure 1 , Figure 2 and Figure 3 , the embodiment of the present application discloses a TV lens mold. Figure 1 The TV lens mold includes a base 1, an upper mold base 2, a lower mold base 4, an upper mold core 3 and a lower mold core 5. The height direction of the base 1 is vertically arranged; the lower mold base 4 is fixedly connected to the top of the base 1; the upper mold base 2 is located above the lower mold base 4, and the upper mold base 2 is slidably arranged on the base 1 along the vertical direction, and a cylinder is fixedly connected between the upper mold base 2 and the base 1 (the cylinder is not shown in the figure). The upper mold core 3 is fixedly connected to the bottom wall of the upper mold base 2, and the lower mold core 5 is fixedly connected to the top wall of the lower mold base 4, so that the upper mold base 2 can slide downward to make the upper mold core 3 and the lower mold core 5 abut against each other. The bottom of the upper mold core 3 and the top of the lower mold core 5 are provided with placement grooves 6, and four placement grooves 6 are provided and arranged in a circular array. A wedge block 7 is slidably arranged in each placement groove 6 along the vertical direction. After the wedge block 7 is fixed, one end of the wedge block 7 located at the opening of the placement groove 6 is flush with the end surface of the opening of the placement groove 6 of the upper mold core 3 or the lower mold core 5, so that the upper and lower wedge blocks 7 can press against each other.

[0032] Reference Figure 2The bottom of the wedge block 7 in the placement groove 6 on the upper mold core 3 and the top of the wedge block 7 in the placement groove 6 on the lower mold core 5 are both provided with a cavity 71 for flowing plastic, and each wedge block 7 is provided with two cavities 71 arranged at intervals. Therefore, when the wedge block 7 on the upper mold core 3 and the wedge block 7 on the lower mold core 5 are against each other, flowing plastic is injected into the cavity 71, and the TV lens 16 of the desired shape can be formed after the plastic solidifies. Among them, the side where the upper mold core 3 and the lower mold core 5 are close to each other is provided with a flow channel 18 for plastic circulation, and the flow channel 18 is connected with the cavity 71 at the end of the wedge block 7, so that it is convenient to inject plastic into the cavity 71 and perform injection molding of the lens 16.

[0033] Reference Figure 4 During injection molding, the plastic in the cavity 71 solidifies to form a lens 16, and the plastic in the flow channel 18 solidifies to form a connecting portion 17; eight lenses 16 can be formed after each injection molding is completed, and the eight lenses 16 are fixedly connected together by the connecting portion 17 to form a whole; then the connecting portion 17 is cut off to obtain eight independent lenses 16.

[0034] Reference Figure 5 and Figure 6 The upper mold base 2 and the lower mold base 4 are both provided with a pressing mechanism 8, which can press the wedge block 7 in the placement groove 6 tightly against the placement groove 6, thereby fixing the wedge block 7. When the wedge block 7 needs to be replaced, the pressing mechanism 8 can cancel the pressing of the wedge block 7 by the pressing mechanism 8, and the wedge block 7 can be taken out of the placement groove 6. Therefore, it is convenient to install and remove the wedge block 7, so that the mold can be easily modified multiple times as needed during the molding process of the TV lens 16.

[0035] Reference Figure 6 The pressing mechanism 8 on the upper mold base 2 and the lower mold base 4 has the same structure, but different installation positions. The pressing mechanism 8 on the upper mold base 2 is now taken as an example for explanation. The pressing mechanism 8 on the upper mold base 2 includes a pressing block 81, a first spring 82 and a driving assembly 83. There are four pressing blocks 81, which correspond to the four placement slots 6 respectively, and the four pressing blocks 81 are arranged in a circular array. A first slide groove 31 for the pressing block 81 to slide into is provided on the side wall of the upper mold core 3, and one end of the pressing block 81 is slidably set in the first slide groove 31, and the sliding direction of the pressing block 81 is set horizontally. The first slide groove 31 is connected to the placement slot 6, so that one end of the pressing block 81 can slide into the placement slot 6.

[0036] The end of the pressing block 81 close to the placement groove 6 is provided with a first inclined surface 811, and the wedge block 7 in the placement groove 6 on the upper mold core 3 is provided with a receiving groove 72, and one of the inner walls of the receiving groove 72 is inclined, and the inclination angle is the same as the inclination angle of the first inclined surface 811. Therefore, when the pressing block 81 slides toward the side close to the receiving groove 72, the first inclined surface 811 can abut against the inner wall of the receiving groove 72, so that the pressing block 81 sliding horizontally pushes the wedge block 7 to slide vertically, so that the end of the wedge block 7 is pressed tightly against the placement groove 6, and the wedge block 7 is fixed.

[0037] The first spring 82 is fixedly connected between the pressing block 81 and the outer wall of the upper mold core 3 . The first spring 82 is in a compressed state, so the first spring 82 causes the pressing block 81 to slide toward a side away from the placement groove 6 .

[0038] The driving assembly 83 includes a first power telescopic member 831, a first connecting ring 832 and a first connecting plate 833. The first power telescopic member 831 is a cylinder. In other embodiments, the first power telescopic member 831 may also be an oil cylinder or an electric push rod 111. Two first power telescopic members 831 are provided, and are respectively located on both sides of the upper mold base 2; the cylinder body of the first power telescopic member 831 is fixedly connected to the upper mold base 2, and the piston rod of the first power telescopic member 831 is vertically downward. The first connecting ring 832 is a rectangular ring structure, the first connecting ring 832 is fixedly connected to the end of the piston rod of the first power telescopic member 831, and the first connecting ring 832 is sleeved on the outer side of the upper mold core 3, so that the first connecting ring 832 can slide in the vertical direction.

[0039] There are four first connecting plates 833, which correspond to the four pressing blocks 81 respectively, and the four first connecting plates 833 are arranged in a circular array. The first connecting plates 833 are arranged vertically, and the first connecting plates 833 are fixedly connected to the bottom wall of the first connecting ring 832. The end of the pressing block 81 located outside the first slide groove 31 is fixedly connected to the first mounting plate 812, and the first mounting plate 812 is arranged in an inclined manner; the bottom end of the first connecting plate 833 is provided with a second inclined surface 8331 with the same degree of inclination as the first mounting plate 812. Therefore, when the second inclined surface 8331 on the first connecting plate 833 abuts against the first mounting plate 812, the first connecting plate 833 slides vertically downward, which can push the pressing block 81 to slide toward the side close to the placement groove 6, and the first inclined surface 811 on the pressing block 81 abuts against the inner wall of the receiving groove 72, thereby pushing the wedge block 7 to slide upward, and the wedge block 7 is pressed and fixed in the placement groove 6, completing the fixation of the wedge block 7.

[0040] Reference Figure 5After the wedge block 7 is installed into the placement groove 6, in order to facilitate the ejection of the wedge block 7, the groove depth of the placement groove 6 on the upper mold core 3 and the lower mold core 5 is greater than the height of the wedge block 7. A first filling block 9 is arranged between the bottom wall of the placement groove 6 on the upper mold core 3 and the corresponding wedge block 7, and a second filling block 10 is arranged between the bottom wall of the placement groove 6 on the lower mold core 5 and the corresponding wedge block 7; the sum of the height of the first filling block 9 and the wedge block 7 and the height between the second filling block 10 and the wedge block 7 are the same as the groove depth of the placement groove 6. The bottom of the first filling block 9 and the top of the second filling block 10 are both provided with a push assembly 11, and the push assembly 11 on the first filling block 9 is now taken as an example for explanation.

[0041] Reference Figure 6 , the push assembly 11 on the first filling block 9 includes a push rod 111 and a fourth spring 112. A vertical mounting groove 92 is provided at the bottom of the first filling block 9, and the top end of the push rod 111 is vertically slidably arranged in the mounting groove 92; the fourth spring 112 is fixedly connected between the top end of the push rod 111 and the bottom wall of the mounting groove 92, and the fourth spring 112 is in a compressed state, so that the fourth spring 112 makes the push rod 111 have a tendency to slide downward. Therefore, after canceling the tight fixation of the wedge block 7, the fourth spring 112 can make the push rod 111 slide downward, and the push rod 111 pushes the wedge block 7 to move, so that the bottom end of the wedge block 7 is moved out of the placement groove 6, which is convenient for the subsequent removal of the wedge block 7 from the placement groove 6.

[0042] Reference Figure 7 Furthermore, a clearance groove 73 is provided on the wedge block 7 in the placement groove 6 on the upper mold core 3. A temporary support assembly 12 is provided on the first filling block 9, and the temporary support assembly 12 can temporarily support the wedge block 7 in the placement groove 6 to prevent the wedge block 7 from detaching from the placement groove 6. The temporary support assembly 12 includes a fixed plate 121, a movable plate 122 and a second spring 123. The fixed plate 121 is fixedly connected to the bottom wall of the first filling block 9, and the fixed plate 121 is horizontally arranged. A third slide groove 33 is provided on the upper mold core 3, and the third slide groove 33 is connected to the placement groove 6. The fixed plate 121 is slidably arranged in the third slide groove 33. A rectangular groove 1211 is provided on one side of the fixed plate 121 close to the clearance groove 73, and one end of the movable plate 122 is slidably connected to the rectangular groove 1211, and the sliding direction of the movable plate 122 is horizontal. The second spring 123 is fixedly connected between the bottom wall of the rectangular groove 1211 and the movable plate 122. The second spring 123 is in a compressed state. Therefore, under the action of the second spring 123, one end of the movable plate 122 can extend into the placement groove 6. The end of the movable plate 122 away from the fixed plate 121 is provided with a third inclined surface 1221. Two third inclined surfaces 1221 are provided and are respectively located at the upper and lower sides of the movable plate 122, so that the end of the movable plate 122 is provided in a sharp shape.

[0043] Reference Figure 7 and Figure 8 Therefore, when installing the wedge block 7, the wedge block 7 can be first slid upward into the placement groove 6 on the upper mold core 3. During the upward sliding process of the wedge block 7, when the top of the wedge block 7 abuts against the third inclined surface 1221 at the end of the movable plate 122, as the wedge block 7 moves upward, the movable plate 122 can slide to the side close to the fixed plate 121 to avoid; when the top of the wedge block 7 abuts against the bottom wall of the first filling block 9, the wedge block 7 stops sliding. At this time, the bottom end of the wedge block 7 is flush with the lower surface of the upper mold core 3, and the movable plate 122 is pressed against the inner wall of the clearance groove 73 under the action of the second spring 123. At this time, the wedge block 7 is released, and the wedge block 7 slides downward under the action of gravity and the push of the push rod 111. Since the movable plate 122 is pressed against the clearance groove 73, it can prevent the wedge block 7 from detaching from the placement groove 6, which helps to simplify the installation process of the wedge block 7.

[0044] It should be noted that, since the placement groove 6 of the upper mold core 3 is opened on the bottom wall of the upper mold core 3, after the wedge block 7 is installed in the placement groove 6, if there are no other restrictions, the wedge block 7 will slide down under the action of gravity and the push rod 111, so that the wedge block 7 is separated from the placement groove 6, so it is necessary to set a temporary support component 12 on the first filling block 9. The placement groove 6 of the lower mold core 5 is opened on the top wall of the lower mold core 5. After the wedge block 7 is installed in the placement groove 6, no other restrictions are required, and the wedge block 7 only needs to be pressed against the placement groove 6 for fixing, so there is no need to set a temporary support component 12 on the second filling block 10 in the lower mold core 5.

[0045] After the wedge block 7 is tightly fixed in the placement groove 6, the upper mold base 2 drives the upper mold core 3 to move downward, so that the wedge blocks 7 on the upper and lower sides are tightly pressed; at this time, plastic can be injected into the cavity 71 between the two wedge blocks 7, and the TV lens 16 of the desired shape can be formed after the plastic solidifies. At this time, the TV lens 16 is attached to the bottom of the wedge block 7 on the upper mold core 3. Then the upper mold core 3 slides upward to separate the wedge blocks 7 on the upper and lower sides, and then the TV lens 16 can be demoulded; in order to facilitate the smooth demoulding process, the first filling block 9 is slidably set on the upper mold core 3.

[0046] Reference Figure 7 The upper mold core 3 is provided with a second slide groove 32, which is connected to the bottom of the placement groove 6. One end of the first filling block 9 is horizontally slidably arranged in the second slide groove 32, and the end of the first filling block 9 can slide into the placement groove 6. A horizontally arranged receiving groove 61 is provided on the side wall at the bottom of the placement groove 6. A third spring 13 is fixedly connected between the end of the first filling block 9 and the bottom wall of the receiving groove 61. The third spring 13 is in a compressed state, and the third spring 13 makes the first filling block 9 have a tendency to slide toward the outside of the placement groove 6. A sliding assembly 14 is provided on the upper mold base 2, and the sliding assembly 14 is used to drive the first filling block 9 to slide toward the side close to the placement groove 6.

[0047] The sliding assembly 14 includes a second power telescopic member 141, a second connecting ring 142 and a second connecting plate 143. The second power telescopic member 141 is a cylinder. In other embodiments, the second power telescopic member 141 may also be an oil cylinder or an electric push rod 111. Two second power telescopic members 141 are provided, and are respectively located on both sides of the upper mold base 2; the cylinder body of the second power telescopic member 141 is fixedly connected to the upper mold base 2, and the piston rod of the second power telescopic member 141 is vertically downward. The second connecting ring 142 is a rectangular ring structure, the second connecting ring 142 is fixedly connected to the end of the piston rod of the second power telescopic member 141, and the second connecting ring 142 is sleeved on the outer side of the upper mold core 3, so that the second connecting ring 142 can slide in the vertical direction.

[0048] Reference Figure 7 and Fig. 9 , four second connecting plates 143 are provided, corresponding to the four first filling blocks 9 respectively, and the four second connecting plates 143 are arranged in a circumferential array. The second connecting plates 143 are arranged vertically, and the second connecting plates 143 are fixedly connected to the bottom wall of the second connecting ring 142. The end of the first filling block 9 located outside the second slide groove 32 is fixedly connected to the second mounting plate 93, and the second mounting plate 93 is arranged in an inclined manner; the bottom end of the second connecting plate 143 is provided with a fifth inclined surface 1431 with the same degree of inclination as the second mounting plate 93. Therefore, when the fifth inclined surface 1431 on the second connecting plate 143 and the second mounting plate 93 are abutted, the second connecting plate 143 slides vertically downward, and the first filling block 9 can be pushed to slide into the placement groove 6. Then, the wedge block 7 can be pressed against the bottom wall of the first filling block 9 to perform injection molding of the TV lens 16; after the plastic in the cavity 71 solidifies, the upper mold base 2 moves upward, so that the wedge block 7 on the upper mold base 2 and the wedge block 7 on the lower mold base 4 are separated. Then the piston rod of the second power telescopic member 141 is retracted, so that the second connecting ring 142 drives the second connecting plate 143 to move upward. Under the action of the third spring 13, the first filling block 9 can slide out of the placement groove 6, providing a space for the subsequent upward movement of the wedge block 7. At this time, the piston rod of the first power telescopic member 831 is extended again, thereby pushing the wedge block 7 to move upward, so that the wedge block 7 can continue to move upward. Therefore, the bottom end of the wedge block 7 moves to the top of the bottom wall of the upper mold core 3, and the multiple TV lenses 16 after solidification are connected to each other through the connecting part 17 to form a whole. The flow channel 18 on the bottom wall of the upper mold core 3 will limit the connecting part 17, so that the connecting part 17 cannot move upward, and the TV lens 16 cannot move upward with the wedge block 7, so that the TV lens 16 can be separated from the wedge block 7, thereby completing the demoulding action. After demoulding, the TV lens 16 can be taken out.

[0049] After the demoulding process is completed, the wedge block 7 needs to be removed and replaced with a new wedge block 7 or the cavity 71 needs to be reprocessed. In order to facilitate the smooth removal of the wedge block 7, a fourth inclined surface 91 is provided on the bottom wall of the first filling block 9 near one end of the placement groove 6. Therefore, after the first filling block 9 moves to the outside of the placement groove 6, the wedge block 7 moves upward for a short distance to be demoulded; after the demoulding is completed, the first filling block 9 slides to the side close to the placement groove 6, so that the fourth inclined surface 91 on the first filling block 9 abuts against the top of the wedge block 7, and then the wedge block 7 can slide downward with the horizontal sliding of the first filling block 9. After the first filling block 9 slides into the placement groove 6, under the action of the fourth spring 112, the push rod 111 pushes the wedge block 7 downward, so that the bottom end of the wedge block 7 is located below the bottom wall of the upper mold core 3. Since the tip of the movable plate 122 is always pressed against the give way groove 73 of the wedge block 7, the wedge block 7 will not directly detach from the placement groove 6. Then the operator holds the bottom end of the wedge block 7 again and pulls the wedge block 7 downward. During the downward movement, the wedge block 7 can overcome the elastic force of the second spring 123, so that the movable plate 122 slides outward to avoid the wedge block 7, until the wedge block 7 is fully separated from the placement groove 6, and the removal process of the wedge block 7 is completed.

[0050] Reference Fig.10 and Fig.11 Furthermore, the first connecting plate 833 and the second connecting plate 143 are respectively located at the two ends of the wedge block 7, so that the multiple first connecting plates 833 on the first connecting ring 832 and the multiple second connecting plates 143 on the second connecting ring 142 are staggered, so that the first connecting plates 833 and the second connecting plates 143 are not easy to interfere with each other during movement, which can reduce the occupied space of the driving component 83 and the sliding component 14, making the structure more compact.

[0051] In addition, the outer side of the upper mold core 3 is detachably fixedly connected to a housing 15 via bolts. The housing 15 is arranged on the outer side of the driving assembly 83 and the sliding assembly 14 , thereby being able to protect the driving assembly 83 and the sliding assembly 14 .

[0052] In this embodiment, since the TV lens 16 is attached to the bottom wall of the upper mold core 3 after molding, the TV lens 16 can be driven to move upward together with the upper mold core 3 during the upward sliding process. Therefore, the first filling block 9 on the upper mold core 3 is slidably arranged and is provided with a sliding assembly 14, so as to be used for separating the TV lens 16 and the wedge block 7; in other embodiments, the second filling block 10 on the lower mold core 5 can also be slidably arranged, and a sliding assembly 14 can be provided on the lower mold core 5. Therefore, no matter whether the TV lens 16 is attached to the upper mold core 3 or the lower mold core 5 after molding, it can be demolded smoothly.

[0053] The implementation principle of a TV lens mold in the embodiment of the present application is as follows: the wedge blocks 7 are sequentially placed in the placement grooves 6 on the lower mold core 5, and then the wedge blocks 7 are pressed tightly in the placement grooves 6 by the pressing mechanism 8 to complete the fixation of the wedge blocks 7. Then, the wedge blocks 7 are sequentially placed in the placement grooves 6 on the upper mold core 3, and the wedge blocks 7 are pressed tightly and fixed by the pressing mechanism 8. The fixing process is as follows: In the initial state, one end of the first filling block 9 is located in the placement groove 6. First, align a wedge block 7 with the placement groove 6 on the upper mold core 3, and slide the wedge block 7 upward; after the wedge block 7 slides for a distance, the top of the wedge block 7 can be against the end of the movable plate 122, and then as the wedge block 7 moves upward, the elastic force of the second spring 123 can be overcome, so that the movable plate 122 slides to the inner side of the fixed plate 121 to avoid; then continue to slide the wedge block 7 upward until the top of the wedge block 7 is pressed against the bottom wall of the first filling block 9. Loosen the wedge block 7, at this time, the second spring 123 makes the end of the movable plate 122 press against the yield groove 73 on the wedge block 7, so that the wedge block 7 can be restricted to prevent the wedge block 7 from directly detaching from the placement groove 6, and the installation of this wedge block 7 is completed. Then, according to the above process, the other three wedge blocks 7 are inserted into the corresponding placement grooves 6 in turn to complete the installation of the wedge block 7 on the upper mold core 3.

[0054] Then the piston rod of the first power telescopic member 831 extends, so that the first power telescopic member 831 drives the first connecting ring 832 to move downward, and the first connecting ring 832 drives the four first connecting plates 833 to move downward until the second inclined surface 8331 on the first connecting plate 833 abuts against the first mounting plate 812 on the pressing block 81; then, as the first connecting plate 833 moves downward, the first mounting plate 812 and the pressing block 81 can slide toward the side close to the receiving groove 72. Then, the first inclined surface 811 on the pressing block 81 abuts against the inclined inner wall of the receiving groove 72, and as the pressing block 81 slides horizontally, the wedge block 7 can slide upward until the top of the wedge block 7 abuts against the bottom wall of the first filling block 9, and the wedge block 7 is pressed and fixed. Since the first connecting ring 832 can drive the four first connecting plates 833 to slide synchronously when sliding, the four wedge blocks 7 can be pressed and fixed at the same time.

[0055] After the wedge blocks 7 on the upper mold core 3 and the lower mold core 5 are pressed and fixed, the upper mold base 2 drives the upper mold core 3 to move downward to close the mold, so that the wedge blocks 7 on the upper mold core 3 and the wedge blocks 7 on the lower mold core 5 are pressed tightly, and then high-temperature plastic is injected into the cavity 71, and then the wedge blocks 7 are water-cooled to accelerate the solidification of the plastic; after the plastic solidifies, a TV lens 16 with a desired shape can be formed. The eight TV lenses 16 are fixedly connected by the connecting portion 17 to form a whole.

[0056] Then the upper mold base 2 drives the upper mold core 3 to move upward, so that the wedge blocks 7 on the upper and lower sides are separated. Then the piston rod of the second power telescopic member 141 is retracted, and under the action of the third spring 13, the first filling block 9 can slide horizontally to the outside of the placement groove 6, thereby providing a clearance space for the subsequent upward movement of the wedge block 7. Then the piston rod of the first power telescopic member 831 is extended again, pushing the wedge block 7 to continue to move up a short distance, so that the bottom end of the wedge block 7 moves to the placement groove 6, and the TV lens 16 cannot move up due to the restriction of the upper mold core 3, so that the separation between the wedge block 7 and the TV lens 16 can be achieved, that is, the demoulding process of the TV lens 16 is completed. Then remove the TV lens 16.

[0057] After demoulding is completed, the piston rod of the first power telescopic member 831 is retracted, so that the first inclined surface 811 on the pressing block 81 is separated from the inner wall of the receiving groove 72; then the piston rod of the second power telescopic member 141 is extended again, so that the first filling block 9 slides to the side close to the placement groove 6; during the sliding process, the fourth inclined surface 91 on the first filling block 9 abuts against the top of the wedge block 7, thereby pushing the wedge block 7 downward. After the first filling block 9 slides into the placement groove 6, the fourth spring 112 can move the push rod 111 downward to push the wedge block 7 downward. Since the movable plate 122 is pressed against the yield groove 73 of the wedge block 7, the wedge block 7 can be limited, so after the push rod 111 pushes the wedge block 7 downward for a distance, the wedge block 7 can be maintained in this state, and at this time, the bottom end of the wedge block 7 is located below the bottom wall of the upper mold core 3. Then the operator holds the bottom end of the wedge block 7 and pulls the wedge block 7 downwards. During the pulling process, the movable plate 122 can slide to avoid until the wedge block 7 is completely pulled out of the placement groove 6. Then the other three wedge blocks 7 are pulled out in turn to complete the removal of the wedge block 7 on the upper mold core 3.

[0058] With regard to the wedge block 7 on the lower die core 5 , it is only necessary to cancel the tightness of the wedge block 7 and then pull the wedge block 7 upward to complete the removal of the wedge block 7 .

[0059] Then the molded TV lens 16 can be observed and measured to determine whether the TV lens 16 meets the requirements, and then the cavity 71 on the wedge block 7 can be reprocessed as needed, or a new wedge block 7 can be replaced, and the wedge block 7 can be reinstalled into the placement groove 6 for injection molding until a TV lens 16 that meets the requirements is molded.

[0060] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A TV lens mold, characterized in that: include: Base (1); An upper mold base (2) is slidably disposed on the base (1), and an upper mold core (3) is fixedly connected to the upper mold base (2); A lower mold base (4) is fixedly arranged on the base (1), a lower mold core (5) is fixedly connected to the lower mold base (4), and a plurality of placement grooves (6) are provided on the side where the lower mold core (5) and the upper mold core (3) are close to each other; A wedge block (7) is located in the placement groove (6), the wedge block (7) being able to slide along the groove depth direction of the placement groove (6), and a mold cavity (71) for molding the lens (16) is provided at the end of the wedge block (7); The pressing mechanism (8) is provided with two groups, which are respectively located on the upper mold base (2) and the lower mold base (4), and are used to press the wedge blocks (7) on the upper mold core (3) and the lower mold core (5) tightly into the placement groove (6); The pressing mechanism (8) on the upper die core (3) comprises a pressing block (81), a first spring (82) and a driving assembly (83). The number of the pressing blocks (81) is the same as the number of the wedge blocks (7). Each of the pressing blocks (81) corresponds to a wedge block (7). The pressing block (81) is slidably arranged on the upper die core (3). The sliding direction of the pressing block (81) is perpendicular to the sliding direction of the upper die core (3). One end of the pressing block (81) can slide into the placement groove (6). The pressing block (81) is provided with a first inclined surface (811). The wedge in the placement groove (6) on the upper die core (3) is The block (7) is provided with a receiving groove (72), the bottom wall of the receiving groove (72) is inclined and can be abutted against the first inclined surface (811) on the pressing block (81), so that the pressing block (81) can push the wedge block (7) to slide inside the placement groove (6) when sliding, the first spring (82) is connected between the pressing block (81) and the upper mold core (3), the first spring (82) makes the pressing block (81) have a tendency to slide toward a side away from the placement groove (6), and the driving component (83) is arranged on the upper mold base (2) and is used to drive the pressing block (81) to slide toward a side close to the receiving groove (72).

2. A TV lens mold according to claim 1, characterized in that: The plurality of wedge blocks (7) are arranged in a circular array.

3. A TV lens mold according to claim 2, characterized in that: The driving assembly (83) comprises a first power telescopic member (831), a first connecting ring (832) and a first connecting plate (833); the first power telescopic member (831) is fixedly connected to the upper mold base (2); the first power telescopic member (831) is arranged along the sliding direction of the upper mold base (2); the first connecting ring (832) is sleeved on the outer side of the upper mold core (3); the first connecting ring (832) is fixedly connected to the movable end of the first power telescopic member (831); the first connecting plate (833) is fixedly connected to the first connecting ring (832); the number of the first connecting plates (833) is the same as the number of the pressing blocks (81); each of the first connecting plates (833) corresponds to a pressing block (81); a second inclined surface (8331) is arranged on a side where the first connecting plate (833) and the corresponding pressing block (81) are close to each other, so that when the first connecting plate (833) slides, it can push the pressing block (81) to slide towards a side close to the placement groove (6).

4. A TV lens mold according to claim 3, characterized in that: The depth of the placement grooves (6) on the upper die core (3) and the lower die core (5) is greater than the height of the wedge block (7); a first filling block (9) is arranged between the bottom wall of the placement groove (6) on the upper die core (3) and the corresponding wedge block (7); a second filling block (10) is arranged between the bottom wall of the placement groove (6) on the lower die core (5) and the corresponding wedge block (7); and a push assembly (11) is arranged in each of the first filling block (9) and the second filling block (10); the push assembly (11) is used to push the wedge block (7) in the placement groove (6) outward.

5. A TV lens mold according to claim 4, characterized in that: A clearance groove (73) is provided on the wedge block (7) in the placement groove (6) on the upper mold core (3); a temporary support assembly (12) is provided on the first filling block (9); the temporary support assembly (12) comprises a fixed plate (121), a movable plate (122) and a second spring (123); the fixed plate (121) is fixedly connected to the first filling block (9); the movable plate (122) is located on one side of the fixed plate (121) close to the clearance groove (73). One end of the movable plate (122) is slidably disposed in the fixed plate (121), the second spring (123) is connected between the fixed plate (121) and the movable plate (122), the second spring (123) causes the movable plate (122) to press against the inner wall of the clearance groove (73), and a third inclined surface (1221) is disposed at one end of the movable plate (122) close to the clearance groove (73) so that the movable plate (122) can be pushed to slide when the wedge block (7) slides.

6. A TV lens mold according to claim 5, characterized in that: The first filling block (9) is slidably arranged on the upper mold core (3), and the sliding direction of the first filling block (9) is perpendicular to the sliding direction of the wedge block (7). A third spring (13) is arranged between the first filling block (9) and the upper mold core (3), and the third spring (13) causes the first filling block (9) to have a tendency to slide toward a side away from the placement groove (6). A sliding component (14) is arranged on the upper mold base (2), and the sliding component (14) is used to drive the first filling block (9) to slide toward a side close to the placement groove (6).

7. A TV lens mold according to claim 6, characterized in that: A fourth inclined surface (91) is provided at the end of the first filling block (9), so that when the first filling block (9) slides toward a side close to the placement groove (6), the fourth inclined surface (91) on the first filling block (9) abuts against the end of the wedge block (7), and the first filling block (9) can push the wedge block (7) to slide toward the outside of the placement groove (6).

8. A TV lens mold according to claim 6, characterized in that: The sliding assembly (14) comprises a second power telescopic member (141), a second connecting ring (142) and a second connecting plate (143); the second power telescopic member (141) is fixedly connected to the upper mold base (2); the second power telescopic member (141) is arranged along the sliding direction of the upper mold base (2); the second connecting ring (142) is sleeved on the outer side of the upper mold core (3); the second connecting ring (142) is fixedly connected to the movable end of the second power telescopic member (141); the second connecting plate (143) is fixedly connected to the second connecting ring (142); the number of the second connecting plates (143) is the same as the number of the first filling blocks (9); each of the second connecting plates (143) corresponds to a first filling block (9); a fifth inclined surface (1431) is arranged on the side where the second connecting plate (143) and the first filling block (9) are close to each other, so that when the second connecting plate (143) slides, it can push the first filling block (9) to slide towards the side close to the placement groove (6).

9. A TV lens mold according to claim 8, characterized in that: The first connecting plates (833) and the second connecting plates (143) are respectively located at two ends of the wedge block (7), so that a plurality of first connecting plates (833) and a plurality of second connecting plates (143) are arranged in a staggered manner.

10. A TV lens mold according to claim 9, characterized in that: The upper mold core (3) is provided with a shell (15), and the shell (15) is arranged to cover the outside of the driving component (83) and the sliding component (14).

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