A processing equipment for LED lens molding

Abstract

The present invention provides a device for processing and molding LED lenses, belonging to the technical field of automated LED lens assembly line equipment, and is primarily used for LED lens molding and processing. The device comprises a nozzle cutting platen equipped with a nozzle cutting station, a suction cup-type manipulator for placing semi-finished LED lenses molded in an injection molding machine onto the nozzle cutting station, and a conveyor belt disposed below the nozzle cutting platen for conveying workpieces. The device also includes a screw conveyor disposed at the bottom of the nozzle cutting platen for lowering the LED lenses, which have been completed after nozzle cutting, onto the conveyor belt, and an LED lens fixture corresponding to each nozzle cutting station. The present invention has the advantages of high nozzle cutting precision, downward-type high-span transfer of LED lenses, and a high degree of automation.

Description

Technical Field

[0001] The present invention relates to the technical field of LED lens automated assembly line equipment, and in particular to a device for processing and molding LED lenses. Background Art

[0002] To improve processing efficiency, existing LED lens molds typically include multiple molding stations during the injection molding process. After injection molding, these stations produce semi-finished LED lenses, which include not only the LED lenses themselves but also the umbrella-shaped brackets that connect them. After being removed by a suction cup robot, the semi-finished LED lenses are directly placed on a laser cutting machine for nozzle cutting.

[0003] The nozzle cutting table of the laser cutting machine will pre-set nozzle cutting stations according to the shape of the formed LED lens semi-finished product. Each nozzle cutting station is actually a hole that passes through the nozzle cutting strip. Under the action of the control system, the suction cup manipulator will automatically align each LED lens with the nozzle cutting station when placing the LED lens semi-finished product on the nozzle cutting table.

[0004] The main reason for setting the nozzle cutting station as a hole that passes through the nozzle cutting table is to facilitate the separate discharge of the LED lens and the bracket. A conveyor belt will be set under the nozzle cutting table so that the LED lens separated from the bracket can fall directly onto the conveyor belt and be sent away from the laser cutting machine.

[0005] After using the above LED lens molding processing equipment, the inventors found that:

[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 nozzle cutting station is large, resulting in a large drop distance for the LED lens after separation from the bracket, which is very easy to knock and wear the mirror surface, and 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 a conveyor belt to receive the LED lens that falls in a free fall manner to larger LED lenses.

[0008] (3) When the size of the LED lens is large, during the nozzle cutting process, the LED lens in a suspended state is easily affected by its own gravity when it is about to be separated from the bracket due to the small number of parts connected to the bracket, resulting in the LED lens being easily offset during the final segmentation process, which can easily cause the LED lens to be miscut or the bracket to be undercut, affecting the processing accuracy.

[0009] In summary, the present application provides a device for LED lens molding and processing. Summary of the Invention

[0010] In order to solve the above technical problems, the present invention proposes an LED lens molding and processing equipment with high nozzle cutting precision, downward high-span transfer of LED lenses, and high degree of automation.

[0011] The technical solution of the present invention is achieved as follows:

[0012] A processing device for LED lens molding, comprising a nozzle cutting platen provided with a nozzle cutting station, a suction cup-type manipulator for placing a semi-finished LED lens molded in an injection molding machine onto the nozzle cutting station, and a conveyor belt provided below the nozzle cutting platen for conveying the workpiece, a screw conveyor provided at the bottom of the nozzle cutting platen for lowering the LED lens after nozzle cutting onto the conveyor belt, and an LED lens fixture provided corresponding to each nozzle 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 part that supports the lateral clamping part to rise and fall in the height direction, a clamping spring arranged in the main body part for providing elastic clamping force for the lateral clamping part, a pressure rod arranged above the main body part and with the top end extending from the nozzle cutting table for being pressed down by a suction cup type manipulator, and a clamp control structure connecting the main body part and the two lateral clamping parts for controlling 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 cross bar and two longitudinal bars vertically arranged on the top of the cross bar and distributed at intervals, the inner end of the cross bar faces the center of the bracket of the LED lens semi-finished product, and the cross bar is parallel to one of the diameter lines of the circumference surrounded by multiple LED lenses in the LED lens semi-finished product, and the outer end of the cross bar is connected to the main body.

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

[0016] Furthermore, the clamp control structure includes a guide rail, a roller slidingly engaged with the guide rail, a driving arm with a top end passing through a through slot and fixed to a connecting block and a bottom end rotatably connected to one end of the roller, a connecting rod with a bottom end rotatably connected to the other end of the roller and a top end rotatably connected to the pressure rod, and a supporting spring for providing an elastic force for the pressure rod to restore upward, the guide rail includes a transverse section, and when the roller displaces outward in the transverse section, the two lateral clamping parts are opened through the driving arm and the connecting block.

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

[0018] The guide rail further includes a longitudinal section whose top end is connected to the outer end of its transverse section, and 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 rotary torsion spring is provided at the rotational connection between the crossbar and the connecting block. A guide rod is fixedly provided on the surface of the longitudinal section and is arranged obliquely in the vertical plane below the crossbar. When the roller moves downward in the longitudinal section, the guide rod drives the crossbar to rotate so that the support plate is pulled away from the bottom of the LED lens, wherein:

[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, based on the movement direction of the spiral conveyor belt in the screw conveyor, the top ends of all the pressure rods are arranged above the sprue cutting plate in a state of being in the opposite spiral to the spiral conveyor belt, wherein the sprue cutting station corresponding to the pressure rod with the lowest top end height is the one with the smallest distance from the belt surface of the spiral conveyor belt among all the sprue cutting stations, and the top end of the spiral conveyor belt is bent outward along its conveying direction, passing the LED lens fixture corresponding to the sprue cutting station with the smallest distance from the belt surface of the spiral conveyor belt, and then forming an arc portion, and the arc portion is located outside the LED lens fixture corresponding to the sprue cutting station with the smallest distance from the belt surface of the spiral conveyor belt and an LED lens fixture upstream of the LED lens fixture.

[0022] Furthermore, all the pressure rods have the same length and the top height of all the pressure rods is the same. A pressure plate is provided corresponding to the longitudinal section of the guide rail. The pressure plate is supported by a reset spring so that the initial height of its lower surface is not less than the top height of the roller in the initial state. The two pressure plates of the same LED lens fixture are connected by a lifting plate, and the lifting plate is slidably mounted on a hanging plate whose top is fixedly connected to the lower surface of the nozzle cutting table in the height direction. The pressure rod includes an upper rod body that slides through the nozzle cutting table and a lower rod body that contacts the bottom of the upper rod body. The top end of the connecting rod is rotated and connected Connected to the lower rod body, a driving tooth groove is provided on one side of the upper rod body, and a speed change gear set is installed on the hanging plate, wherein the power input gear of the speed change gear set is located directly below the driving tooth groove, and the power output gear of the speed change gear set is connected to the winding wheel, and a steel wire rope is wound on the winding wheel, and the end of the steel wire rope is connected to the bottom of the lifting plate, and when the roller moves to the top of the longitudinal section of the guide rail, the driving tooth groove is engaged with the speed change gear set, wherein the speed change gear set is configured to make the LED lenses on all LED lens fixtures drop to the lowest position at the same time.

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

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

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

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

[0027] 1. By setting up an LED lens fixture to cooperate with the action of the robot, the LED lens can be clamped during the process of using laser cutting to separate the LED lens and the bracket, thereby improving the stability and accuracy of the cutting.

[0028] 2. By setting the LED lens fixture to carry the LED lens's descending stroke, the screw conveyor can be better coordinated to realize the downward transfer of the LED lens over a long distance, avoiding the drawbacks of the existing technology that relies on the free fall of the LED lens, such as mirror wear, bumps and deformation.

[0029] 3. By setting the LED lens fixture to move outward after the LED lens is separated from the bracket, the LED lens semi-finished product can be cut at the outside of the spiral conveyor belt when it is laser cut. After the cutting is completed, the LED lens automatically enters the range of the spiral conveyor belt, thereby improving the effect of its downward high-distance transfer and preventing the LED lens from being bumped. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the present invention when a semi-finished LED lens to be divided is placed in an LED lens forming processing device;

[0031] Figure 2 The present invention is used for LED lens molding processing equipment Figure 1 A magnified view of point A in the figure;

[0032] Figure 3 The present invention is used for LED lens molding processing equipment Figure 1 A partial schematic diagram in FIG.

[0033] Figure 4 The present invention is used for LED lens molding processing equipment Figure 3 Enlarged view of point B in FIG.

[0034] Figure 5 The present invention is used for LED lens molding processing equipment Figure 3 Another viewing angle after removing the LED lens semi-finished product to be divided;

[0035] Figure 6 The present invention is used for LED lens molding processing equipment Figure 5 Enlarged view of point C in the figure;

[0036] Figure 7 The present invention is used for LED lens molding processing equipment Figure 6 The enlarged view of point D in the figure;

[0037] Figure 8 The present invention is used for LED lens molding processing equipment Figure 5 A partial schematic diagram in ;

[0038] Figure 9 The present invention is used for LED lens molding processing equipment Figure 8 Enlarged view of point E in the figure;

[0039] Figure 10 The present invention is used for LED lens molding processing equipment Figure 5 A partial schematic diagram of

[0040] Figure 11The present invention is used for LED lens molding processing equipment Figure 10 The enlarged view of point F in the figure;

[0041] Figure 12 The present invention is used for LED lens molding processing equipment Figure 11 The enlarged view of G in the figure;

[0042] Figure 13 This is a schematic diagram of the present invention when the pressure rod of all LED lens clamps used in the LED lens molding processing equipment is configured to include an upper rod body and a lower rod body;

[0043] Figure 14 The present invention is used for LED lens molding processing equipment Figure 13 The enlarged view of H in the figure;

[0044] Figure 15 The present invention is used for LED lens molding processing equipment Figure 13 Another perspective of the picture;

[0045] Figure 16 The present invention is used for LED lens molding processing equipment Figure 13 A partial schematic diagram of

[0046] Figure 17 The present invention is used for LED lens molding processing equipment Figure 13 Another partial schematic diagram of;

[0047] Figure 18 Schematic diagram of a support plate for LED lens molding and processing equipment according to the present invention;

[0048] Figure 19 This is a schematic diagram of the tops of all the pressure rods used in the LED lens molding and processing equipment of the present invention being distributed in a spiral state opposite to the spiral conveyor belt;

[0049] Figure 20 The present invention is used for LED lens molding processing equipment Figure 19 Schematic diagram of the LED lens fixture. Implementation Method

[0050] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0051] The LED lens molding processing equipment provided by the embodiment of the present invention is mainly used in the process of separating the LED lens from the bracket after the LED lens and the bracket are molded in one go by the injection molding machine. Figures 1 to 20 As shown, it mainly includes a nozzle cutting table 1, a suction cup manipulator, a conveyor belt, a screw conveyor 5 and an LED lens fixture 6.

[0052] The nozzle cutting platen 1 serves as the workpiece placement platform for the laser cutting machine. It is primarily used to place the LED lenses and brackets to be cut. The nozzle cutting platform is equipped with at least one nozzle cutting station 2, each corresponding to an LED lens on the bracket. During the LED lens injection molding process, the bracket typically takes on an umbrella shape, and an LED lens is integrally formed at each end of the bracket.

[0053] The suction cup manipulator is primarily used to remove the molded LED lens and bracket from the injection molding machine after the mold is opened, and then place them onto the nozzle cutting platform. Each LED lens is positioned in its corresponding nozzle cutting station 2, and the bracket is positioned at the center of the circle formed by the multiple nozzle cutting stations 2, supported and positioned by the nozzle cutting platform 1. It should be noted that the suction cup manipulator is existing technology and will not be described in detail here.

[0054] The conveyor belt is arranged below the nozzle cutting plate 1, which is used to receive the LED lenses cut from the bracket and promptly convey the LED lenses that fall above it to facilitate the next step of LED lens molding. It should be noted that the conveyor belt is a prior art and will not be described in detail here.

[0055] The screw conveyor 5 is located at the bottom of the nozzle cutting plate 1, vertically between the nozzle cutting plate 1 and the conveyor belt. It replaces the conveyor belt to receive the cut LED lenses and transport them to the conveyor belt. This configuration is mainly to greatly reduce the height to which the LED lenses fall, thus preventing the existing problem of LED lenses falling directly from a high altitude onto the conveyor belt, which may cause surface wear, damage, and deformation of the products.

[0056] An LED lens clamp 6 is set up corresponding to each nozzle cutting station 2, which is used to automatically cooperate with the suction cup robot. It is automatically unfolded before the suction cup robot places the LED lens semi-finished product to be split onto the nozzle cutting table 1, and automatically clamps and fixes the LED lens semi-finished product to be split after the suction cup robot places the LED lens semi-finished product to be split onto the nozzle cutting table 1 and leaves.

[0057] With this arrangement, on the one hand, for the LED lens semi-finished product, the multiple LED lens clamps 6 improve the stability of the LED lens semi-finished product to be split by clamping each LED lens separately. At the same time, the clamping force applied to the LED lens semi-finished product in multiple directions has the effect of correcting the position between the LED lens semi-finished product and the nozzle cutting station 2. On the other hand, during the process of splitting a larger LED lens from a bracket, by supporting the LED lens so that it is suspended in the air compared to the prior art, it can prevent the deformation and distortion of the connection between the LED lens and the bracket due to gravity before the bracket is completely separated, thereby preventing the laser from accidentally cutting the LED lens or incompletely removing the bracket, thereby improving the cutting accuracy.

[0058] Specifically, in the embodiment of the present 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] There are two lateral clamping parts 6.1 in each LED lens clamp 6. The two lateral clamping parts 6.1 can synchronously clamp the LED lens from both sides through relative movement. The lateral clamping parts 6.1 are located in the nozzle cutting station 2. The two lateral clamping parts 6.1 can loosen the LED lens by moving away from each other.

[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 arranged vertically on top of the horizontal bar 6.1.1 and spaced apart. When the two horizontal bars 6.1.1 move relative to each other, the vertical bars 6.1.2 clamp onto the side surface of the LED lens to secure it.

[0061] The main body 6.2 is used to support the lateral clamping part 6.1 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. Both sides of the bottom of the sleeve block 6.2.2 are provided with through grooves 6.2.3 corresponding to the guide grooves 6.2.1 and connected 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 be displaced within the guide groove 6.2.1.

[0062] The clamping spring 6.3 is arranged 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 inserted into the guide groove 6.2.1. The outer end of the cross bar 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 passed through the sprue cutting platform, and the pressure rod 6.4 is located on the outside of the sprue cutting station 2. The top end of the pressure rod 6.4 extends out of the sprue cutting platform, and the bottom end of the pressure rod 6.4 is located on the main body 6.2. When the suction cup type manipulator places the LED lens semi-finished product on the sprue cutting station 2 or takes out the bracket, it will first approach the sprue cutting station 2 and then leave. When the suction cup type manipulator approaches the sprue cutting station 2, it will press down the pressure rod 6.4, so that the pressure rod 6.4 drops on the sprue cutting table 1.

[0064] The clamp control structure 6.5 connects the main part 6.2 and the lateral clamping part 6.1 in the LED lens clamp 6. When the pressure rod 6.4 descends, the clamp control structure 6.5 causes the two lateral clamping parts 6.1 in 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 driving arm 6.5.3, a connecting rod 6.5.4 and a support spring 6.5.5.

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

[0067] Guide rail 6.5.1 is fixedly mounted on nozzle cutting table 1, with roller 6.5.2 slidingly mounted within guide rail 6.5.1. The top end of drive arm 6.5.3 extends through slot 6.2.3 and is fixedly connected to connecting block 6.2.4. The bottom end of drive arm 6.5.3 is rotatably connected to one end of roller 6.5.2. The bottom end of connecting rod 6.5.4 is rotatably connected to the other end of roller 6.5.2, and the top end of connecting rod 6.5.4 is rotatably connected to pressure rod 6.4. A support spring 6.5.5 is mounted on nozzle cutting table 1, with its top end connected to the bottom end of pressure rod 6.4, providing elastic force for pressure rod 6.4 to return upward.

[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 outward. At this point, the drive arm 6.5.3 causes the connecting block 6.2.4 to move the lateral clamping portion 6.1 outward, away from the LED lens, thus opening. 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 spiral conveyor includes an outer cover 5.1, an inner cover 5.2 and a spiral conveyor belt 5.3. The spiral conveyor belt 5.3 is located below the LED lens. When the LED lens is separated from the LED lens, the LED lens falls onto the spiral conveyor belt 5.3 and is then conveyed by the spiral conveyor belt 5.3. Afterwards, the LED lens on the spiral conveyor belt 5.3 will fall from the bottom outlet of the spiral conveyor 5 to the conveyor belt, so as to greatly reduce the falling height of the LED lens.

[0070] The top end of the inner housing 5.2 is connected to the bottom surface of the nozzle cutting plate 1. The outer end of the spiral conveyor belt 5.3 is supported by the outer housing 5.1. The inner end of the spiral conveyor belt 5.3 is spaced from the surface of the inner housing 5.2 and positioned outside the bracket of the semi-finished LED lens. This arrangement prevents the laser cutting machine from cutting the spiral conveyor belt 5.3 when separating the bracket and the LED lens.

[0071] In this embodiment of the present invention, a support plate 6.1.3 is provided on the inner side of the crossbar 6.1.1. After the lateral clamping portion 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 portions 6.1 in the LED lens fixture 6 move away from each other to the farthest position, 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 fixture 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. When the roller 6.5.2 moves downward in the longitudinal end, the support plate 6.1.3 transfers the LED lens located above it to the spiral conveyor belt 5.3;

[0073] The crossbar 6.1.1 is rotatably connected to the connecting block 6.2.4, and a rotary torsion spring is provided at the rotational connection between the crossbar 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 arranged at an angle 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, so that the support plate 6.1.3 is pulled away from the bottom of the LED lens.

[0074] By making the above arrangement, the LED lens fixture 6 releases the clamped LED lens by displacing the roller 6.5.2 within the transverse section 3 of the guide rail 6.5.1. The released LED lens then falls downward onto the support plate 6.1.3 of the LED lens fixture 6, where it is supported. As the roller 6.5.2 moves downward within the longitudinal section 4 of the guide rail 6.5.1, the LED lens fixture 6 descends, carrying the LED lens with it. When the transverse rods begin to contact the guide rods 6.5.6 and as they continue to descend, the two transverse rods 6.1.1 within the LED lens fixture 6 will swing outward synchronously, allowing the support plate 6.1.3 to be pulled away from the bottom of the LED lens it supports. Ultimately, the LED lens falls onto the spiral conveyor belt 5.3.

[0075] In the above process, the LED lens clamp 6 is driven when the suction cup manipulator moves toward the gate 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 the guide rods 6.5.6 on all 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, since the surface of the spiral conveyor belt 5.3 is a spiral structure, the height of the spiral conveyor belt 5.3 corresponding to different nozzle cutting stations 2 is different, resulting in different heights between the LED lenses in different nozzle cutting stations 2 and the locations where they fall on the spiral conveyor belt 5.3. Therefore, by arranging the guide rods 6.5.6 of different LED lens fixtures 6 at heights that match the spiral direction of the spiral conveyor belt 5.3, the distance between the crossbar 6.1.1 in each LED lens and the corresponding LED lens falling location on the spiral conveyor belt 5.3 can be kept consistent when the crossbar 6.1.1 in the initial outward swing position is reached.

[0078] After the height of the guide rods 6.5.6 is set as above, the lifting stroke of the LED lens corresponding to each nozzle cutting station 2 driven by the suction cup manipulator is different. However, the action process of the suction cup manipulator is uniform each time. Therefore, the embodiment of the present invention also makes the following settings:

[0079] As a first embodiment of the pressure rod 6.4, based on the movement direction of the spiral conveyor belt 5.3 in the screw conveyor 5, the top ends of all the pressure rods 6.4 are arranged above the sprue cutting table 1 in a state of counter-spiral with the spiral conveyor belt 5.3, wherein the sprue cutting station 2 corresponding to the pressure rod 6.4 with the lowest top end height is the one with the smallest distance from the belt surface of the spiral conveyor belt 5.3 among all the sprue cutting stations 2, and the top end of the spiral conveyor belt 5.3 is bent outward along its conveying direction, passing the LED lens fixture 6 corresponding to the sprue cutting station 2 with the smallest distance from the belt surface of the spiral conveyor belt 5.3, and then forming an arc portion, and the arc portion is located outside the LED lens fixture 6 corresponding to the sprue cutting station 2 with the smallest distance from the belt surface of the spiral conveyor belt 5.3 and an LED lens fixture 6 upstream of the LED lens fixture 6.

[0080] In this first embodiment, the length of each pressure rod 6.4 is different, so that the time for each pressure rod 6.4 to contact the robot is different, and further, the distance the pressure rod 6.4 is pressed down by the suction cup robot is also different. In this way, the different lengths of the pressure rods 6.4 and the different distances they are pressed down by the suction cup robot are used to match the different height differences between the LED lenses and their falling positions on the spiral conveyor belt 5.3 in different nozzle cutting stations 2.

[0081] It should be noted that in the first embodiment, the LED lens clamp 6 corresponding to the pressure rod 6.4 of the suction cup manipulator is first unfolded, and when the suction cup manipulator is away from the sprue cutting table 1, the LED lens clamp 6 corresponding to the pressure rod 6.4 of the suction cup manipulator is first contacted and then clamps the LED lens on the corresponding sprue cutting station 2.

[0082] As a second embodiment of the pressure rod 6.4, all pressure rods 6.4 have the same length and the same top height of all pressure rods 6.4. 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 top height of the roller 6.5.2 in the initial state. 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 installed in the height direction on the hanging plate 12 fixedly connected to the lower surface of the nozzle cutting table 1 at the top. The pressure rod 6.4 includes an upper rod body 6.4.1 that is slidably penetrated on the nozzle cutting table 1 and a lower rod body 6.4.2 that contacts the bottom of the upper rod body 6.4.1. The connecting rod 6.5 .4 is rotatably connected to the lower rod body 6.4.2, and a driving tooth groove 10 is provided on one side of the upper rod body 6.4.1. A speed gear set 11 is installed on the hanging plate 12. The power input gear of the speed gear set 11 is located directly below the driving tooth groove 10. The power output gear of the speed gear set 11 is connected to the winding wheel 13. A steel wire rope 14 is wound around the winding wheel 13. The end of the steel wire rope 14 is connected to the bottom of the lifting plate 9, and when the roller 6.5.2 moves to the top of the longitudinal section 4 of the guide rail 6.5.1, the driving tooth groove 10 engages with the speed gear set 11, wherein the speed gear set 11 is configured to make the LED lenses on all LED lens fixtures 6 drop to the lowest position at the same time.

[0083] Specifically, a reversing wheel is mounted on the hanging plate 12. The end of the wire rope 14, away from the winding wheel 13, winds its way upward around the reversing wheel before being fixed to the bottom of the lifting plate 9. When the drive gear 10 descends in accordance with the upper rod 6.4.1, it drives the speed change gear set 11, causing the speed change gear set 11 to rotate the winding wheel 13. The winding wheel 13 pulls down the lifting plate 9 by winding the wire rope 14. During this movement, the lifting plate 9 presses down on the roller 6.5.2 via the pressure plate 7, thereby lowering the LED lens fixture 6 carrying the LED lens.

[0084] In this case, different transmission ratios of the speed-changing gear set 11 are set for different LED lens holders 6, so that the transmission ratio of the speed-changing gear set 11 corresponding to the nozzle cutting station 2 that is farther away from the spiral conveyor belt 5.3 is larger. Specifically, those skilled in the art can adjust the number of gears and teeth in the speed-changing gear set 11 to achieve different transmission ratios according to actual needs. This is prior art and will not be further described here.

[0085] By adopting this second embodiment, all LED lens clamps 6 can simultaneously clamp and release the LED lenses, and the pressure rod 6.4 can be set to the minimum length within the allowable range. This can prevent the LED lens semi-finished product from being pulled and displaced during the clamping process, resulting in the subsequent LED lens clamps 6 being unable to effectively clamp the LED lenses.

[0086] Furthermore, in an embodiment of the present invention, the length of the connecting rod 6.5.4 is configured so 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 horizontal, and when the LED lens fixture 6 is in a free state, the connecting rod 6.5.4 is tilted. Due to the different sizes of LED lenses, the position of the lateral clamping portion 6.1 within the LED lens fixture 6 on the sleeve block 6.2.2 varies when clamping the LED lens. In this case, since the lateral section 3 of the guide rail 6.5.1 has a certain length, the LED lens fixture 6 is suitable for clamping and fixing LED lenses of different sizes. This greatly increases the scope of application of the LED lens molding and processing equipment provided by the present invention.

[0087] The inner end of the crossbar 6.1.1 faces the center of the bracket of the semi-finished LED lens, and the crossbar 6.1.1 is parallel to one of the diameters of the circumference of the multiple LED lenses in the semi-finished LED lens. The longitudinal rod 6.1.2 located on the outside of the crossbar 6.1.1 is slidably mounted on the crossbar 6.1.1 in the longitudinal direction of the crossbar 6.1.1, and a transverse spring 6.1.4 is installed between the longitudinal rod 6.1.2 located on the outside and the crossbar 6.1.1.

[0088] By making the above arrangement, the two horizontal bars 6.1.1 in 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 areas where the inner and outer vertical bars 6.1.2 contact the LED lens are asymmetrically distributed in the front-to-back direction. Specifically, the positions where the two inner vertical bars 6.1.2 clamp the LED lens are located inward of the positions where the two outer vertical bars 6.1.2 clamp the LED lens in the direction of expansion and contraction of the clamping spring 6.3.

[0089] At this time, under the action of the clamping spring 6.3, the two horizontal bars 6.1.1 cooperate with the two longitudinal bars 6.1.2 located on the inside to exert an outward force on the LED lens. After the LED lens and the bracket are separated, the force provided by the clamping spring 6.3 will cause the two horizontal bars to continue to approach each other. At this time, the LED lens will move outward. Since there is a gap between the spiral conveyor line and the inner cover body 5.2, and the positions of the laser cutting bracket and the LED lens are located in this gap, in order to prevent the LED lens fixture 6 from being accidentally cut by the laser cutting machine, the horizontal bar 6.1.1 and the inner longitudinal bar are both located outside the spiral gap, and the inner end of the LED lens is located in the gap, resulting in the LED lens not being completely located directly above the spiral conveyor belt 5.3, but presenting a state where the inner end is 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 move the LED lens outward and eventually completely within the range of the spiral conveyor belt 5.3, so that it can be better lowered onto the spiral conveyor belt 5.3, reducing bumps and improving 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 in the scope of protection of the present invention.

Claims

1. A processing device for LED lens molding, comprising a nozzle cutting table (1) provided with a nozzle cutting station (2), a suction cup type manipulator for placing the LED lens semi-finished product molded in the injection molding machine onto the nozzle cutting station (2), and a conveyor belt provided below the nozzle cutting table (1) for conveying the workpiece, characterized in that: It also includes a screw conveyor (5) arranged at the bottom of the nozzle cutting table (1) for lowering the LED lens after nozzle cutting onto the conveyor belt, and an LED lens fixture (6) arranged corresponding to each nozzle cutting station (2), wherein: The LED lens clamp (6) comprises a lateral clamping portion (6.1) for clamping the LED lens from both sides through relative movement, a main body (6.2) for supporting the lateral clamping portion (6.1) to rise and fall in the height direction, a clamping spring (6.3) provided in the main body (6.2) for providing an elastic clamping force for the lateral clamping portion (6.1), a pressure rod (6.4) provided above the main body (6.2) and with its top end extending from the nozzle cutting table (1) for being pressed down by a suction cup type manipulator, and a clamp control structure (6.5) connecting the main body (6.2) and the two lateral clamping portions (6.1) for controlling the two lateral clamping portions (6.1) to first release the LED lens and then separate from the LED lens when the pressure rod (6.4) descends; The lateral clamping portion (6.1) includes a crossbar (6.1.1) and two longitudinal bars (6.1.2) vertically arranged on the top of the crossbar (6.1.1) and spaced apart, the inner end of the crossbar (6.1.1) facing 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 of the circle surrounded by the 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); The main body (6.2) includes a sleeve block (6.2.2) with guide grooves (6.2.1) at both ends, through grooves (6.2.3) corresponding to the two guide grooves (6.2.1) and 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), one end of which is connected to the inner wall of one end of the guide groove (6.2.1), and the other end of which is 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 cross bar (6.1.1); 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 driving arm (6.5.3) with a top end passing through a through slot (6.2.3) and fixed to a connecting block (6.2.4) and a bottom end rotatably connected to one end of the roller (6.5.2), a connecting rod (6.5.4) with a bottom end rotatably connected to the other end of the roller (6.5.2) and a top end rotatably connected to a pressure rod (6.4), and a supporting spring (6.5.5) for providing an elastic force for the pressure rod (6.4) to recover upward. The guide rail (6.5.1) includes a transverse section (3). When the roller (6.5.2) moves outward in the transverse section (3), the two lateral clamping parts (6.1) are opened through the driving arm (6.5.3) and the connecting block (6.2.4).

2. The LED lens molding processing equipment according to claim 1, characterized in that: The inner side of the crossbar (6.1.1) is provided with a support plate ( 6.1.3), after the lateral clamping part (6.1) releases the LED lens, the LED lens falls to the support plate ( 6.1.3) on; The guide rail (6.5.1) further includes a longitudinal section (4) whose top end is connected to the outer end of its transverse section (3); when the roller (6.5.2) moves downward in the longitudinal end, the support plate (6.1.3) transfers the LED lens located above it to the spiral conveyor belt (5.3); 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 rotation connection between the longitudinal section (4) and the connecting block (6.1.1), and a guide rod (6.5.6) is fixedly provided on the surface of the longitudinal section (4) and is located below the cross bar (6.1.1) and is arranged obliquely in the vertical plane. When the roller (6.5.2) moves downward in the longitudinal section (4), the guide rod (6.5.6) drives the cross bar (6.1.1) to rotate so that the support plate (6.1.3) is pulled away from the bottom of the LED lens, wherein: 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).

3. The LED lens molding processing equipment according to claim 2, characterized in that: Taking the movement direction of the spiral conveyor belt (5.3) in the spiral conveyor (5) as a reference, the top ends of all the pressure rods (6.4) are arranged above the nozzle cutting table (1) in a state of being in a reverse spiral with respect to the spiral conveyor belt (5.3), wherein the nozzle cutting station (2) corresponding to the pressure rod (6.4) with the lowest top height is the one with the smallest distance from the belt surface of the spiral conveyor belt (5.3) among all the nozzle cutting stations (2), and the top end of the spiral conveyor belt (5.3) is bent outward along its conveying direction after passing the LED lens fixture (6) corresponding to the nozzle cutting station (2) with the smallest distance from the belt surface of the spiral conveyor belt (5.3) toward the upstream, and the arc portion is located outside the LED lens fixture (6) corresponding to the nozzle cutting station (2) with the smallest distance from the belt surface of the spiral conveyor belt (5.3) and an LED lens fixture (6) upstream of the LED lens fixture (6).

4. The LED lens molding processing equipment according to claim 2, characterized in that: All the pressure rods (6.4) are of the same length, and the top heights of all the pressure rods (6.4) are of the same 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 top height of the roller (6.5.2) in the initial state. 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 a hanging plate (12) whose top is fixedly connected to the lower surface of the nozzle cutting table (1). The pressure rod (6.4) includes an upper rod body (6.4.1) that is slidably penetrated on the nozzle 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 to the lower surface of the nozzle cutting table (1). On the lower rod body (6.4.2), a driving tooth groove (10) is provided on one side of the upper rod body (6.4.1), and a speed change gear set (11) is installed on the hanging plate (12), wherein the power input gear of the speed change gear set (11) is located directly below the driving tooth groove (10), and the power output gear of the speed change gear set (11) is connected to a winding wheel (13), and a steel wire rope (14) is wound around the winding wheel (13), and the end of the steel wire rope (14) is connected to the bottom of the lifting plate (9), and when the roller (6.5.2) moves to the top of the longitudinal section (4) of the guide rail (6.5.1), the driving tooth groove (10) is engaged with the speed change gear set (11), wherein the speed change gear set (11) is configured to make all the LED lenses on the LED lens fixtures (6) descend to the lowest position at the same time.

5. The LED lens molding processing equipment according to any one of claims 2 to 4, characterized in that: The screw conveyor (5) comprises an outer cover (5.1) and an inner cover (5.2), the top end of the inner cover (5.2) is connected to the lower surface of the nozzle 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 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.

6. The LED lens molding processing equipment according to claim 5, characterized in that: The length of the connecting rod (6.5.4) is set so 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.

7. The LED lens molding processing equipment according to claim 6, characterized in that: The longitudinal rod (6.1.2) located on the outside of the crossbar (6.1.1) is slidably arranged on the crossbar (6.1.1) in the length direction of the crossbar (6.1.1) 6.1.1), and a transverse spring (6.1.4) is provided between the longitudinal rod (6.1.2) located on the outside and the transverse rod (6.1.1).

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