Molding and processing apparatus for LED lenses

Abstract

The present invention belongs to the technical field of automated assembly line apparatuses for LED lenses. Provided is a molding and processing apparatus for LED lenses, which apparatus is mainly used for molding and processing LED lenses. The molding and processing apparatus for LED lenses comprises: a sprue cutting platen provided with sprue cutting stations, a suction cup-type manipulator for placing semi-finished LED lenses molded in an injection molding machine onto the sprue cutting stations, and a conveyor belt, which is arranged below the sprue cutting platen and configured to convey workpieces. The molding and processing apparatus for LED lenses further comprises: a screw conveyor, which is arranged at the bottom of the sprue cutting platen and configured to lower the LED lenses with sprue cutting completed onto the conveyor belt, and LED lens fixtures respectively corresponding to the sprue cutting stations. The present invention has the advantages of high precision in sprue cutting, downward-placed high-span transfer of LED lenses, and a high degree of automation.

Description

An equipment for forming and processing LED lenses Technical Field

[0001] This invention relates to the field of automated production line equipment for LED lenses, and more specifically to an equipment for forming and processing LED lenses. Background Technology

[0002] In the process of molding LED lenses using an injection molding machine, to improve processing efficiency, existing LED lens molds generally include multiple LED lens molding stations. After injection molding, the resulting semi-finished LED lens includes not only the LED lens itself but also an umbrella-shaped support connecting these LED lenses. The molded semi-finished LED lens is then removed by a suction cup robotic arm and placed directly onto a laser cutting machine for sprue cutting.

[0003] The laser cutting machine's sprue cutting table is pre-set with sprue cutting stations according to the shape of the formed LED lens semi-finished product. Each sprue cutting station is actually a hole that passes through the sprue cutting strip. When the suction cup robotic arm is placed on the sprue cutting table under the control system, it will automatically align each LED lens with the sprue cutting station.

[0004] The main reason for setting the sprue cutting station with a hole that runs through the sprue cutting table is to facilitate the separate discharge of LED lenses and brackets. A conveyor belt will be set under the sprue cutting table so that the LED lenses separated from the brackets fall directly onto the conveyor belt and are sent away from the laser cutting machine.

[0005] The inventors discovered the following after using the LED lens forming and processing equipment described above:

[0006] (1) In order to prevent the conveyor belt from being damaged by the laser cutting machine, the distance between the conveyor belt and the sprue cutting station is large, which results in a large distance for the LED lens to fall after it separates from the bracket, making it very easy to bump and wear the mirror surface, or even cause damage and deformation.

[0007] (2) When the size of the LED lens is large, its gravity also increases accordingly. When it falls onto the conveyor belt, the inertial force is large, resulting in a large impact force. This makes it difficult to apply the method of using the conveyor belt to support the LED lens falling in free fall to larger LED lenses.

[0008] (3) When the size of the LED lens is large, during the sprue cutting process, the LED lens, which is in a suspended state, is easily affected by its own gravity. When it is about to separate from the bracket, the LED lens is prone to shift during the final segment cutting process due to the small amount of the bracket connecting it. This can easily cause the LED lens to be cut incorrectly or the bracket to be cut too little, affecting the processing accuracy.

[0009] In summary, this application provides an equipment for forming and processing LED lenses. Summary of the Invention

[0010] To solve the above-mentioned technical problems, this invention proposes an LED lens forming and processing equipment with high precision sprue cutting, high span transfer of LED lenses via a drop-down mechanism, and a high degree of automation.

[0011] The technical solution of this invention is implemented as follows:

[0012] An LED lens molding and processing equipment includes a sprue cutting table with sprue cutting stations, a suction cup-type robot for placing semi-finished LED lenses formed in an injection molding machine onto the sprue cutting stations, and a conveyor belt disposed below the sprue cutting table for conveying the workpieces. It also includes a screw conveyor disposed at the bottom of the sprue cutting table for lowering the sprue-cut LED lenses onto the conveyor belt, and LED lens fixtures corresponding to each sprue cutting station, wherein:

[0013] The LED lens clamp includes a lateral clamping part that clamps the LED lens from both sides through relative movement, a main body that supports the lateral clamping part to move up and down in the height direction, a clamping spring disposed in the main body to provide elastic clamping force for the lateral clamping part, a pressure rod disposed above the main body and extending from the sprue cutting table for being pressed down by a suction cup-type robot arm, and a clamping control structure connecting the main body and the two lateral clamping parts to control the two lateral clamping parts to first release the LED lens and then separate from the LED lens when the pressure rod descends.

[0014] Furthermore, the lateral clamping part includes a crossbar and two vertical bars that are vertically arranged at the top of the crossbar and spaced apart. The inner end of the crossbar faces the center of the bracket of the LED lens semi-finished product, and the crossbar is parallel to one of the diameter lines of the circumference formed by multiple LED lenses in the LED lens semi-finished product. The outer end of the crossbar is connected to the main body part.

[0015] Furthermore, the main body includes a sleeve block with guide grooves at both ends, a through groove opened at the bottom of the sleeve block corresponding to the two guide grooves, and a connecting block inserted into the guide groove. The clamping spring is located in the guide groove, with one end connected to the inner wall of one end of the guide groove and the other end connected to the end of the connecting block. The outer end of the connecting block is connected to the outer end of the crossbar.

[0016] Furthermore, the clamp control structure includes a guide rail, a roller that slides with the guide rail, a drive arm whose top end is fixed to a connecting block through a through groove and whose bottom end is rotatably connected to one end of the roller, a connecting rod whose bottom end is rotatably connected to the other end of the roller and whose top end is rotatably connected to a pressure rod, and a support spring for providing an upward restoring elastic force to the pressure rod. The guide rail includes a transverse section, and when the roller moves outward within the transverse section, the two lateral clamping parts open through the drive arm and the connecting block.

[0017] Furthermore, a support plate is provided on the inner side of the crossbar, and after the lateral clamping part releases the LED lens, the LED lens falls onto the support plate;

[0018] The guide rail also includes a longitudinal section whose top end is connected to the outer end of its transverse section. When the roller moves downward in the longitudinal end, the support plate transfers the LED lens located above it to the spiral conveyor belt.

[0019] The crossbar is rotatably connected to the connecting block, and a torsion spring is provided at the rotatable connection between the crossbar and the connecting block. A guide rod, located below the crossbar and inclined in the vertical plane, is fixedly provided on the surface of the longitudinal section. When the roller moves downward within the longitudinal section, the guide rod drives the crossbar to rotate, causing the support plate to be pulled away from the bottom of the LED lens.

[0020] The guide rods on two adjacent LED lens fixtures are spaced apart in the height direction, so that the guide rods on all LED lens fixtures are distributed in the same spiral state as the spiral conveyor belt, and the height difference between the guide rods on two adjacent LED lens fixtures is greater than the length of the longitudinal rod.

[0021] Furthermore, taking the movement direction of the spiral conveyor belt inside the spiral conveyor as a reference, the tops of all the pressure bars are arranged in a reverse spiral state above the sprue cutting table, with the pressure bar with the lowest top height corresponding to the sprue cutting station having the smallest distance from the surface of the spiral conveyor belt among all the sprue cutting stations. The top of the spiral conveyor belt bends outward with an arc portion after passing the LED lens fixture corresponding to the sprue cutting station with the smallest distance from the surface of the spiral conveyor belt upstream along its conveying direction. This arc portion is located outside the LED lens fixture corresponding to the sprue cutting station with the smallest distance from the surface of the spiral conveyor belt and one LED lens fixture upstream of the LED lens fixture.

[0022] Furthermore, all pressure rods are of the same length and have the same top height. Pressure plates are provided corresponding to the longitudinal sections of the guide rail. These pressure plates are supported by return springs so that the initial height of their lower surfaces is not less than the initial top height of the rollers. Two pressure plates of the same LED lens fixture are connected by a lifting plate, which slides in the height direction on a hanging plate fixedly connected to the lower surface of the sprue cutting table. Each pressure rod includes an upper rod that slides through the sprue cutting table and a lower rod that contacts the bottom of the upper rod. The top of the connecting rod rotates... The upper rod is attached to the lower rod body. A drive tooth groove is provided on one side of the upper rod body. A speed-changing gear set is installed on the hanging plate. The power input gear of the speed-changing gear set is located directly below the drive tooth groove. The power output gear of the speed-changing gear set is connected to a winding wheel. A steel wire rope is wound on the winding wheel. The end of the steel wire rope is connected to the bottom of the lifting plate. When the roller moves to the top of the longitudinal section of the guide rail, the drive tooth groove meshes with the speed-changing gear set. The speed-changing gear set is configured to allow all the LED lenses on the LED lens clamps to descend to the lowest position simultaneously.

[0023] Furthermore, the screw conveyor includes an outer cover and an inner cover. The top of the inner cover is connected to the lower surface of the sprue cutting table. The outer end of the screw conveyor belt is supported by the outer cover. The inner end of the screw conveyor belt is spaced apart from the surface of the inner cover, and the inner end of the screw conveyor belt is located outside the bracket of the LED lens semi-finished product.

[0024] Furthermore, the length of the connecting rod is set such that it is horizontal when the roller moves to the outer end of the lateral end of the guide rail, and tilted when the LED lens clamp is in a free state.

[0025] Furthermore, the longitudinal bar located on the outer side of the crossbar is slidably disposed on the crossbar in the length direction of the crossbar, and a transverse spring is provided between the longitudinal bar located on the outer side and the crossbar.

[0026] The present invention has the following beneficial effects:

[0027] 1. By setting up an LED lens fixture, the robot arm can work together to hold the LED lens during the process of separating the LED lens from the bracket by laser cutting of the LED lens semi-finished product, thereby improving the stability and accuracy of the cutting.

[0028] 2. By setting the descent stroke of the LED lens clamp to support the LED lens, the screw conveyor can be better coordinated to achieve high-distance transfer of the LED lens by lowering it, avoiding the drawbacks of the existing technology that rely on the free fall of the LED lens, which causes mirror wear, bumps and deformation.

[0029] 3. By setting the LED lens fixture to have an outward movement process after the LED lens is separated from the bracket, the LED lens semi-finished product can be laser-cut outside the spiral conveyor belt. After the cutting is completed, the LED lens automatically enters the spiral conveyor belt range, which improves the effect of its downward high-distance transfer and also prevents the LED lens from being bumped. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the present invention when LED lens semi-finished products to be divided are placed in the LED lens forming and processing equipment.

[0031] Figure 2 is an enlarged view of point A in Figure 1 of the LED lens forming and processing equipment of the present invention;

[0032] Figure 3 is a partial schematic diagram of the LED lens forming and processing equipment of the present invention in Figure 1;

[0033] Figure 4 is an enlarged view of section B in Figure 3 of the LED lens forming and processing equipment of the present invention;

[0034] Figure 5 is another perspective view of the LED lens semi-finished product to be divided in Figure 3 after removing the LED lens semi-finished product to be divided in the LED lens forming and processing equipment of the present invention.

[0035] Figure 6 is an enlarged view of point C in Figure 5 of the LED lens forming and processing equipment of the present invention;

[0036] Figure 7 is an enlarged view of point D in Figure 6 of the LED lens forming and processing equipment of the present invention;

[0037] Figure 8 is a partial schematic diagram of Figure 5 of the LED lens forming and processing equipment of the present invention;

[0038] Figure 9 is an enlarged view of point E in Figure 8 of the LED lens forming and processing equipment of the present invention;

[0039] Figure 10 is a partial schematic diagram of Figure 5 of the present invention for LED lens forming and processing equipment;

[0040] Figure 11 is an enlarged view of point F in Figure 10 of the LED lens forming and processing equipment of the present invention;

[0041] Figure 12 is an enlarged view of point G in Figure 11 of the LED lens forming and processing equipment of the present invention;

[0042] Figure 13 is a schematic diagram of the pressure bar of all LED lens fixtures in the LED lens forming and processing equipment of the present invention, which is configured to include an upper rod body and a lower rod body.

[0043] Figure 14 is an enlarged view of section H in Figure 13 of the LED lens forming and processing equipment of the present invention;

[0044] Figure 15 is another perspective view of Figure 13 of the present invention for LED lens forming and processing equipment;

[0045] Figure 16 is a partial schematic diagram of the LED lens forming and processing equipment of the present invention as shown in Figure 13;

[0046] Figure 17 is another partial schematic diagram of Figure 13 of the present invention for LED lens forming and processing equipment;

[0047] Figure 18 is a schematic diagram of the support plate of the present invention used in LED lens forming and processing equipment;

[0048] Figure 19 is a schematic diagram showing that the tops of all the pressure bars of the LED lens forming and processing equipment of the present invention are distributed in a reverse spiral state with the spiral conveyor belt.

[0049] Figure 20 is a schematic diagram of the LED lens fixture in Figure 19 of the present invention for LED lens forming and processing equipment. Detailed Implementation

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] The LED lens molding and processing equipment provided in this embodiment of the invention is mainly used for separating the LED lens from the bracket after the LED lens and bracket have been injection molded in one step by an injection molding machine. See Figures 1 to 20 for details. It mainly includes a sprue cutting table 1, a suction cup robotic arm, a conveyor belt, a screw conveyor 5, and an LED lens clamp 6.

[0052] The sprue cutting platform 1 serves as the workpiece placement platform for the laser cutting machine. It is primarily used to place the LED lenses and supports to be cut. The sprue cutting platform has at least one sprue cutting station 2, with each station corresponding to one LED lens on the support. During the LED lens injection molding process, the support is typically umbrella-shaped, with an LED lens integrally formed at each end of the support.

[0053] The suction cup robotic arm is mainly used after the injection molding machine has opened the mold to remove the injection-molded LED lens and bracket as a whole and place them on the sprue cutting platform. Each LED lens is positioned in its corresponding sprue cutting station 2, and the bracket is located at the center of the circumference formed by multiple sprue cutting stations 2, supported and limited by the sprue cutting table 1. It should be noted that the suction cup robotic arm is existing technology and will not be described in detail here.

[0054] The conveyor belt is positioned below the sprue cutting table 1. It receives the LED lenses being cut from the support and promptly transports any LED lenses that fall onto it for the next LED lens forming process. It should be noted that the conveyor belt is existing technology and will not be described in detail here.

[0055] The screw conveyor 5 is located at the bottom of the sprue cutting table 1, between the sprue cutting table 1 and the conveyor belt in the vertical direction. It is used to receive the segmented LED lenses and transport them onto the conveyor belt instead of the conveyor belt. This arrangement is mainly to greatly reduce the falling height of the LED lenses, preventing the surface wear, product breakage, and deformation caused by the LED lenses falling directly from a height onto the conveyor belt, as is the case in the prior art.

[0056] One LED lens clamp 6 is provided for each sprue cutting station 2. It is used to automatically cooperate with the suction cup robot. It automatically unfolds before the suction cup robot places the LED lens semi-finished product to be divided onto the sprue cutting table 1. After the suction cup robot places the LED lens semi-finished product to be divided onto the sprue cutting table 1 and leaves, it automatically clamps and fixes the LED lens semi-finished product to be divided.

[0057] This setup serves two purposes. First, for the LED lens semi-finished product, multiple LED lens clamps 6 individually hold each LED lens, improving the stability of the semi-finished product during the cutting process. Simultaneously, the clamping force applied to the semi-finished product in multiple directions helps to correct its position relative to the sprue cutting station 2. Second, during the cutting of larger LED lenses from the support, supporting the LED lens prevents it from being suspended in mid-air, unlike in existing technologies. This prevents deformation and twisting at the connection point with the support due to gravity before complete separation, thus preventing accidental laser cutting of the LED lens or incomplete removal of the support, and improving cutting accuracy.

[0058] Specifically, in this embodiment of the invention, the LED lens clamp 6 includes a lateral clamping portion 6.1, a main body portion 6.2, a clamping spring 6.3, a pressure rod 6.4, and a clamp control structure 6.5.

[0059] Each LED lens fixture 6 has two lateral clamping parts 6.1. The two lateral clamping parts 6.1 move relative to each other to clamp the LED lens synchronously from both sides. The lateral clamping parts 6.1 are located in the sprue cutting station 2. The two lateral clamping parts 6.1 move in opposite directions to release the LED lens.

[0060] Furthermore, the lateral clamping portion 6.1 in this embodiment includes a horizontal bar 6.1.1 and two vertical bars 6.1.2 that are vertically arranged at the top of the horizontal bar 6.1.1 and spaced apart. When the two horizontal bars 6.1.1 are displaced relative to each other, the vertical bars 6.1.2 clamp and fix the LED lens to the side surface.

[0061] The main body 6.2 is used to support the lateral clamping part 6.1 to move up and down in the height direction. Specifically, the main body 6.2 includes a sleeve block 6.2.2. Both ends of the sleeve block 6.2.2 are provided with guide grooves 6.2.1. The bottom sides of the sleeve block 6.2.2 are provided with through grooves 6.2.3 corresponding to the guide grooves 6.2.1. A connecting block 6.2.4 is inserted into the guide groove 6.2.1, and the connecting block 6.2.4 can move within the guide groove 6.2.1.

[0062] The clamping spring 6.3 is set in the guide groove 6.2.1. One end of the clamping spring 6.3 is connected to the inner wall of one end of the guide groove 6.2.1, and the other end of the clamping spring 6.3 is connected to the end of the connecting block 6.2.4 that is inserted into the guide groove 6.2.1. The outer end of the crossbar 6.1.1 is connected to the end of the guide rod 6.5.6 located outside the sleeve block 6.2.2.

[0063] The pressure rod 6.4 is installed on the sprue cutting platform and is located outside the sprue cutting station 2. The top of the pressure rod 6.4 extends out of the sprue cutting platform and the bottom of the pressure rod 6.4 is located on the main body 6.2. In both the state of placing the LED lens semi-finished product into the sprue cutting station 2 or taking out the bracket, the suction cup robot will first approach the sprue cutting station 2 and then leave. When the suction cup robot approaches the sprue cutting station 2, it will press down the pressure rod 6.4, causing the pressure rod 6.4 to descend on the sprue cutting table 1.

[0064] The clamp control structure 6.5 connects the main body 6.2 inside the LED lens clamp 6 with the lateral clamping part 6.1. When the pressure rod 6.4 descends, the clamp control structure 6.5 causes the two lateral clamping parts 6.1 inside the LED lens clamp 6 to first release the LED lens and then separate from the LED lens.

[0065] Specifically, the clamp control structure 6.5 includes a guide rail 6.5.1, a roller 6.5.2, a drive arm 6.5.3, a connecting rod 6.5.4, and a support spring 6.5.5.

[0066] Guide rail 6.5.1, roller 6.5.2, drive arm 6.5.3, and connecting rod 6.5.4 are each provided for one of the two lateral clamping parts 6.1. Among them:

[0067] The guide rail 6.5.1 is fixedly mounted on the sprue cutting table 1. The roller 6.5.2 is slidably mounted inside the guide rail 6.5.1. The top end of the drive arm 6.5.3 passes through the through groove 6.2.3 and is fixedly connected to the connecting block 6.2.4, while the bottom end of the drive arm 6.5.3 is rotatably connected to one end of the roller 6.5.2. The bottom end of the connecting rod 6.5.4 is rotatably connected to the other end of the roller 6.5.2, and the top end of the connecting rod 6.5.4 is rotatably connected to the pressure rod 6.4. The support spring 6.5.5 is mounted on the sprue cutting table 1, and its top end is connected to the bottom end of the pressure rod 6.4, providing elastic force for the pressure rod 6.4 to recover upwards.

[0068] The guide rail 6.5.1 includes a transverse section 3, and when the roller 6.5.2 moves outward within the transverse section 3, it drives the drive arm 6.5.3 to move outward as well. At this time, the drive arm 6.5.3 causes the connecting block 6.2.4 to move the lateral clamping portion 6.1 outward, moving it away from the LED lens in an opening process. During this process, the LED lens clamp 6 not only releases the LED lens but also allows it to detach and fall onto the spiral conveyor belt 5.3. During the opening process of the LED lens clamp 6, the clamping spring 6.3 is stretched.

[0069] Furthermore, the screw conveyor includes an outer cover 5.1, an inner cover 5.2, and a screw conveyor belt 5.3. The screw conveyor belt 5.3 is located below the LED lens. When the LED lens separates from the LED lens, the LED lens falls onto the screw conveyor belt 5.3 and is then conveyed by the screw conveyor belt 5.3. Afterward, the LED lens on the screw conveyor belt 5.3 will fall from the bottom outlet of the screw conveyor 5 onto the conveyor belt, thereby greatly reducing the falling height of the LED lens.

[0070] The top of the inner cover 5.2 is connected to the lower surface of the sprue cutting table 1. The outer end of the spiral conveyor belt 5.3 is supported by the outer cover 5.1. The inner end of the spiral conveyor belt 5.3 is spaced apart from the surface of the inner cover 5.2, and the inner end of the spiral conveyor belt 5.3 is located outside the bracket of the LED lens semi-finished product. This arrangement prevents the laser cutting machine from cutting the spiral conveyor belt 5.3 when dividing the bracket and the LED lens.

[0071] In this embodiment of the invention, a support plate 6.1.3 is provided on the inner side of the crossbar 6.1.1. After the lateral clamping part 6.1 releases the LED lens, the LED lens falls onto the support plate 6.1.3. At this time, when the two lateral clamping parts 6.1 in the LED lens clamp 6 move to the farthest position through opposite movements, the LED lens is released. At this time, the LED lens falls onto the support plate 6.1.3 and continues to be supported by the LED lens clamp 6.

[0072] The guide rail 6.5.1 also includes a longitudinal section 4 whose top end is connected to the outer end of its transverse section 3, and the support plate 6.1.3 transfers the LED lens located above it to the spiral conveyor belt 5.3 when the roller 6.5.2 moves downward in the longitudinal end;

[0073] The crossbar 6.1.1 is rotatably connected to the connecting block 6.2.4, and a torsion spring is provided at the rotatable connection between the crossbar 6.1.1 and the connecting block 6.2.4. A guide rod 6.5.6, which is located below the crossbar 6.1.1 and is inclined in the vertical plane, is fixedly provided on the surface of the longitudinal section 4. When the roller 6.5.2 moves downward in the longitudinal section 4, the guide rod 6.5.6 drives the crossbar 6.1.1 to rotate, so that the support plate 6.1.3 is pulled away from the bottom of the LED lens.

[0074] By making the above settings, the LED lens clamp 6 releases the held LED lens by moving the roller 6.5.2 within the transverse section 3 of the guide rail 6.5.1. The released LED lens falls downwards and is supported on the support plate 6.1.3 of the LED lens clamp 6. As the roller 6.5.2 moves downwards within the longitudinal section 4 of the guide rail 6.5.1, the LED lens clamp 6 lowers with the LED lens. When the transverse bar begins to contact the guide rod 6.5.6 and continues to descend, the two transverse bars 6.1.1 within the LED lens clamp 6 swing outwards synchronously, causing the support plate 6.1.3 to be pulled away from the bottom of the LED lens it supports. Finally, the LED lens falls onto the spiral conveyor belt 5.3.

[0075] During the above process, the LED lens clamp 6 is driven as the suction cup robot moves towards the sprue cutting table 1 to pick up the bracket, and the LED lens is lowered onto the spiral conveyor belt 5.3. This lowering process can reduce the falling height of the LED lens, improve its falling accuracy, and reduce surface wear.

[0076] Among them, the guide rods 6.5.6 on two adjacent LED lens clamps 6 are distributed at intervals in the height direction, so that all the guide rods 6.5.6 on the LED lens clamps 6 are distributed in the same spiral state as the spiral conveyor belt 5.3, and the height difference between the guide rods 6.5.6 on two adjacent LED lens clamps 6 is greater than the length of the longitudinal rod 6.1.2.

[0077] At this time, because the spiral conveyor belt 5.3 has a spiral structure, the height of the spiral conveyor belt 5.3 corresponding to different sprue cutting stations 2 is different, resulting in different heights between the LED lenses in different sprue cutting stations 2 and their falling positions on the spiral conveyor belt 5.3. Therefore, by setting the height of the guide rods 6.5.6 of different LED lens fixtures 6 to match the spiral direction of the spiral conveyor belt 5.3 according to the spiral direction of the spiral conveyor belt 5.3, the distance between the crossbar 6.1.1 inside each LED lens and the corresponding falling position of the LED lens on the spiral conveyor belt 5.3 can be kept consistent at the initial position of outward swing.

[0078] After setting the height of guide rod 6.5.6 as described above, the lifting stroke of the LED lens driven by the suction cup robot is different for each sprue cutting station 2. Since the movement of the suction cup robot is uniform each time, this embodiment of the invention also makes the following settings:

[0079] As a first embodiment of the pressure bar 6.4, based on the movement direction of the spiral conveyor belt 5.3 inside the spiral conveyor 5, the tops of all the pressure bars 6.4 are arranged above the sprue cutting table 1 in a reverse spiral state with the spiral conveyor belt 5.3. Among them, the sprue cutting station 2 corresponding to the pressure bar 6.4 with the lowest top height is the one with the smallest distance from the surface of the spiral conveyor belt 5.3 among all the sprue cutting stations 2. The top of the spiral conveyor belt 5.3 is bent outward with an arc portion after passing the LED lens clamp 6 corresponding to the sprue cutting station 2 with the smallest distance from the surface of the spiral conveyor belt 5.3 upstream along its conveying direction. The arc portion is located outside the LED lens clamp 6 corresponding to the sprue cutting station 2 with the smallest distance from the surface of the spiral conveyor belt 5.3 and one LED lens clamp 6 upstream of the LED lens clamp 6.

[0080] In this first embodiment, the length of each pressure rod 6.4 is different, which makes the contact time between each pressure rod 6.4 and the robot arm different. Consequently, the stroke of the pressure rod 6.4 being pressed down by the suction cup robot arm is also different. In this way, the different strokes of the pressure rod 6.4 being pressed down by the suction cup robot arm are used to match the different height differences between the LED lens and the spiral conveyor belt 5.3 in different sprue cutting stations 2.

[0081] It should be noted that in this first embodiment, the LED lens clamp 6 corresponding to the pressure rod 6.4 of the suction cup manipulator first unfolds, and as the suction cup manipulator moves away from the sprue cutting table 1, the LED lens on the corresponding sprue cutting station 2 is clamped after the pressure rod 6.4 of the suction cup manipulator first contacts the LED lens clamp 6.

[0082] In a second embodiment of the pressure rod 6.4, all pressure rods 6.4 have the same length and the same top height. A pressure plate 7 is provided corresponding to the longitudinal section 4 of the guide rail 6.5.1. The pressure plate 7 is supported by a return spring 8 so that the initial height of its lower surface is not less than the initial top height of the roller 6.5.2. The two pressure plates 7 of the same LED lens fixture 6 are connected by a lifting plate 9, and the lifting plate 9 is slidably mounted in the height direction on the hanging plate 12 fixedly connected to the lower surface of the sprue cutting table 1 at the top. The pressure rod 6.4 includes an upper rod body 6.4.1 that slides through the sprue cutting table 1 and a lower rod body 6.4.2 that contacts the bottom of the upper rod body 6.4.1, and a connecting rod 6.5. The top of the .4 is rotatably connected to the lower rod 6.4.2. A drive tooth groove 10 is provided on one side of the upper rod 6.4.1. A speed change gear set 11 is installed on the hanging plate 12. The power input gear of the speed change gear set 11 is located directly below the drive tooth groove 10. The power output gear of the speed change gear set 11 is connected to the winding wheel 13. A steel wire rope 14 is wound on the winding wheel 13. The end of the steel wire rope 14 is connected to the bottom of the lifting plate 9. When the roller 6.5.2 moves to the top of the longitudinal section 4 of the guide rail 6.5.1, the drive tooth groove 10 meshes with the speed change gear set 11. The speed change gear set 11 is configured to make all the LED lenses on the LED lens clamps 6 descend to the lowest position at the same time.

[0083] Specifically, a reversing wheel is provided on the suspended plate 12. The end of the steel wire rope 14 away from the winding wheel 13 passes over the reversing wheel from bottom to top and is fixedly connected to the bottom of the lifting plate 9. When the drive gear 10 descends according to the upper rod 6.4.1, it drives the transmission gear set 11 to rotate, causing the transmission gear set 11 to drive the winding wheel 13 to rotate. The winding wheel 13 pulls down the lifting plate 9 through the winding steel wire rope 14. During the displacement process, the lifting plate 9 presses down the roller 6.5.2 through the pressure plate 7, thereby causing the LED lens clamp 6 to descend while carrying the LED lens.

[0084] At this time, the transmission ratio of the variable speed gear set 11 is set differently for different LED lens fixtures 6, so that the transmission ratio of the variable speed gear set 11 corresponding to the larger the distance from the spiral conveyor belt 5.3 to the sprue cutting station 2 is. Specifically, those skilled in the art can set different transmission ratios according to actual needs by setting the number of gears and the number of teeth in the variable speed gear set 11. This is the prior art and will not be described in detail here.

[0085] By adopting this second implementation method, all LED lens clamps 6 can synchronously clamp and release LED lenses, and the pressure rod 6.4 can be set to the minimum value within the allowable length range. This prevents the LED lens semi-finished product from being pulled and displaced during the individual clamping process, which would cause subsequent LED lens clamps 6 to be unable to effectively clamp the LED lens.

[0086] Furthermore, in this embodiment of the invention, the length of the connecting rod 6.5.4 is set such that it is horizontal when the roller 6.5.2 moves to the outer end of the lateral end of the guide rail 6.5.1, and tilted when the LED lens clamp 6 is in a free state. Due to the different sizes of LED lenses, the lateral clamping portion 6.1 within the LED lens clamp 6 is positioned differently on the sleeve block 6.2.2 when clamping the LED lens. At this time, because the lateral segment 3 of the guide rail 6.5.1 has a certain length, the LED lens clamp 6 can be used to clamp and fix LED lenses of different sizes. This greatly improves the applicability of the LED lens forming and processing equipment provided by this invention.

[0087] The inner end of the crossbar 6.1.1 faces the center of the bracket of the LED lens semi-finished product, and the crossbar 6.1.1 is parallel to one of the diameter lines of the circumference formed by the multiple LED lenses in the LED lens semi-finished product. The longitudinal bar 6.1.2 located on the outer side of the crossbar 6.1.1 is slidably mounted on the crossbar 6.1.1 along its length, and a transverse spring 6.1.4 is provided between the outer longitudinal bar 6.1.2 and the crossbar 6.1.1.

[0088] By making the above arrangement, the two horizontal bars 6.1.1 inside the LED lens clamp 6 are arranged in a "V" shape, and the distance between the two inner vertical bars 6.1.2 is smaller than the distance between the two outer vertical bars 6.1.2. Therefore, when clamping the LED lens, the contact points between the inner and outer vertical bars 6.1.2 and the LED lens are asymmetrically distributed in the front-back direction. Specifically, the positions where the inner two vertical bars 6.1.2 clamp the LED lens are located inside the positions where the clamping spring 6.3 clamps the LED lens in the direction of extension and retraction of the outer two vertical bars 6.1.2.

[0089] At this point, under the action of the clamping spring 6.3, the two horizontal bars 6.1.1, in conjunction with the two inner vertical bars 6.1.2, exert an outward force on the LED lens. After the LED lens is separated from the bracket, the force provided by the clamping spring 6.3 will cause the two horizontal bars to continue to move closer, at which point the LED lens will displace outward. Because there is a gap between the spiral conveyor and the inner cover 5.2, and the position of the laser cutting bracket and the LED lens is located within this gap, in order to prevent the LED lens fixture 6 from being accidentally cut by the laser cutting machine, the horizontal bars 6.1.1 and the inner vertical bars are all located outside the spiral gap, and the inner end of the LED lens is located within the gap. This results in the LED lens not being completely above the spiral conveyor belt 5.3, but rather having its inner end located outside the range of the spiral conveyor belt 5.3.

[0090] Furthermore, after the LED lens and the bracket are separated, the LED lens clamp 6 can use the force of the clamping spring 6.3 to make the LED lens move outward and eventually be completely within the range of the spiral conveyor belt 5.3, so as to be better lowered onto the spiral conveyor belt 5.3, reduce collisions and improve the lowering effect.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing equipment for LED lens molding, comprising a sprue cutting table (1) with a sprue cutting station (2), a suction cup-type robot for placing semi-finished LED lenses formed in an injection molding machine onto the sprue cutting station (2), and a conveyor belt disposed below the sprue cutting table (1) for conveying workpieces, characterized in that, It also includes a screw conveyor (5) installed at the bottom of the sprue cutting table (1) for lowering the sprue-cut LED lenses onto the conveyor belt, and an LED lens fixture (6) corresponding to each sprue cutting station (2), wherein: The LED lens clamp (6) includes a lateral clamping part (6.1) that clamps the LED lens from both sides by relative movement, a main body part (6.2) that supports the lateral clamping part (6.1) to rise and fall in the height direction, a clamping spring (6.3) provided in the main body part (6.2) to provide elastic clamping force to the lateral clamping part (6.1), a pressure rod (6.4) provided above the main body part (6.2) and extending from the sprue cutting table (1) for being pressed down by a suction cup manipulator, and a clamping control structure (6.5) connecting the main body part (6.2) and the two lateral clamping parts (6.1) to control the two lateral clamping parts (6.1) to first release the LED lens and then separate from the LED lens when the pressure rod (6.4) descends.

2. The LED lens forming and processing equipment according to claim 1, characterized in that, The lateral clamping portion (6.1) includes a crossbar (6.1.1) and two longitudinal bars that are vertically arranged at the top of the crossbar (6.1.1) and spaced apart. 6.1.2), the inner end of the crossbar (6.1.1) faces the center of the bracket of the LED lens semi-finished product, and the crossbar (6.1.1) is parallel to one of the diameter lines of the circumference formed by multiple LED lenses in the LED lens semi-finished product, and the outer end of the crossbar (6.1.1) is connected to the main body (6.2).

3. The LED lens forming and processing equipment according to claim 2, characterized in that, The main body (6.2) includes a sleeve block (6.2.2) with guide grooves (6.2.1) at both ends, a through groove (6.2.3) corresponding to the two guide grooves (6.2.1) respectively opened at the bottom of the sleeve block (6.2.2), and a connecting block (6.2.4) inserted into the guide groove (6.2.1). The clamping spring (6.3) is located in the guide groove (6.2.1), with one end connected to the inner wall of one end of the guide groove (6.2.1) and the other end connected to the end of the connecting block (6.2.4). The outer end of the connecting block (6.2.4) is connected to the outer end of the crossbar (6.1.1).

4. The LED lens forming and processing equipment according to claim 3, characterized in that, The clamp control structure (6.5) includes a guide rail (6.5.1), a roller (6.5.2) that slides with the guide rail (6.5.1), a drive arm (6.5.3) whose top end is fixed to the connecting block (6.2.4) and whose bottom end is rotatably connected to one end of the roller (6.5.2), a connecting rod (6.5.4) whose bottom end is rotatably connected to the other end of the roller (6.5.2) and whose top end is rotatably connected to the pressure rod (6.4), and a support spring (6.5.5) for providing an upward restoring elastic force to the pressure rod (6.4). The guide rail (6.5.1) includes a transverse section (3). When the roller (6.5.2) moves outward within the transverse section (3), the two lateral clamping parts (6.1) open through the drive arm (6.5.3) and the connecting block (6.2.4).

5. The LED lens forming and processing equipment according to claim 4, characterized in that, A support plate is provided on the inner side of the crossbar (6.1.1). 6.1.3), after the lateral clamping part (6.1) releases the LED lens, the LED lens falls onto the support plate ( 6.1.3) above; The guide rail (6.5.1) also includes a longitudinal section (4) whose top end is connected to the outer end of its transverse section (3), and the support plate (6.1.3) transfers the LED lens located above it to the spiral conveyor belt (5.3) when the roller (6.5.2) moves downward in the longitudinal end; The crossbar (6.1.1) is rotatably connected to the connecting block (6.2.4), and the crossbar ( A rotary torsion spring is provided at the rotatable connection between the 6.1.1) and the connecting block (6.2.4). A guide rod (6.5.6) is fixedly provided on the surface of the longitudinal section (4) and is inclined in the vertical plane below the crossbar (6.1.1). When the roller (6.5.2) moves downward in the longitudinal section (4), the guide rod (6.5.6) drives the crossbar (6.1.1) to rotate, causing the support plate (6.1.3) to be pulled away from the bottom of the LED lens. The guide rods (6.5.6) on two adjacent LED lens fixtures (6) are spaced apart in the height direction, so that the guide rods (6.5.6) on all LED lens fixtures (6) are distributed in the same spiral state as the spiral conveyor belt (5.3), and the height difference between the guide rods (6.5.6) on two adjacent LED lens fixtures (6) is greater than the length of the longitudinal rod (6.1.2).

6. The LED lens forming and processing equipment according to claim 5, characterized in that, Based on the direction of movement of the spiral conveyor belt (5.3) in the spiral conveyor (5), the tops of all the pressure bars (6.4) are arranged above the sprue cutting table (1) in a spiral state opposite to that of the spiral conveyor belt (5.3). The sprue cutting station (2) corresponding to the pressure bar (6.4) with the lowest top height is the one with the smallest distance from the surface of the spiral conveyor belt (5.3) among all the sprue cutting stations (2). The top of the spiral conveyor belt (5.3) is bent outward with an arc part after passing the LED lens fixture (6) corresponding to the sprue cutting station (2) with the smallest distance from the surface of the spiral conveyor belt (5.3) upstream along its conveying direction. The arc part is located outside the LED lens fixture (6) corresponding to the sprue cutting station (2) with the smallest distance from the surface of the spiral conveyor belt (5.3) and an LED lens fixture (6) upstream of the LED lens fixture (6).

7. The LED lens forming and processing equipment according to claim 5, characterized in that, All pressure rods (6.4) have the same length and the same top height. A pressure plate (7) is provided corresponding to the longitudinal section (4) of the guide rail (6.5.1). The pressure plate (7) is supported by a return spring (8) so that the initial height of its lower surface is not less than the initial top height of the roller (6.5.2). The two pressure plates (7) of the same LED lens fixture (6) are connected by a lifting plate (9). The lifting plate (9) is slidably mounted on a hanging plate (12) fixedly connected to the lower surface of the sprue cutting table (1) in the height direction. The pressure rod (6.4) includes an upper rod body (6.4.1) that slides through the sprue cutting table (1) and a lower rod body (6.4.2) that contacts the bottom of the upper rod body (6.4.1). The top of the connecting rod (6.5.4) is rotatably connected. On the lower rod (6.4.2), a drive tooth groove (10) is provided on one side of the upper rod (6.4.1). A speed change gear set (11) is installed on the hanging plate (12). The power input gear of the speed change gear set (11) is located directly below the drive tooth groove (10). The power output gear of the speed change gear set (11) is connected to a winding wheel (13). A steel wire rope (14) is wound on the winding wheel (13). The end of the steel wire rope (14) is connected to the bottom of the lifting plate (9). When the roller (6.5.2) moves to the top of the longitudinal section (4) of the guide rail (6.5.1), the drive tooth groove (10) meshes with the speed change gear set (11). The speed change gear set (11) is configured to make all the LED lenses on the LED lens clamps (6) descend to the lowest position at the same time.

8. A processing apparatus for LED lens forming according to any one of claims 4 to 7, characterized in that, The screw conveyor (5) includes an outer cover (5.1) and an inner cover (5.2). The top of the inner cover (5.2) is connected to the lower surface of the sprue cutting table (1). The outer end of the screw conveyor belt (5.3) is supported by the outer cover (5.1). The inner end of the screw conveyor belt (5.3) is spaced apart from the surface of the inner cover (5.2), and the inner end of the screw conveyor belt (5.3) is located outside the bracket of the LED lens semi-finished product.

9. The LED lens forming and processing equipment according to claim 8, characterized in that, The length of the connecting rod (6.5.4) is set such that when the roller (6.5.2) moves to the outer end of the lateral end of the guide rail (6.5.1), it is in a horizontal state, and when the LED lens clamp (6) is in a free state, the connecting rod (6.5.4) is in an inclined state.

10. The LED lens forming and processing equipment according to claim 9, characterized in that, The longitudinal bar (6.1.2) located on the outer side of the crossbar (6.1.1) is slidably mounted on the crossbar (6.1.1) along its length. On 6.1.1), a transverse spring (6.1.4) is provided between the outer longitudinal bar (6.1.2) and the transverse bar (6.1.1).

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