Cooling and shaping device for injection molding production of LED lamp bead bracket

Abstract

The invention discloses a cooling and shaping device for injection molding production of an LED lamp bead support, and relates to the technical field of lamp bead support cooling, the cooling and shaping device comprises a conveying belt and a first sealing box, limiting belts are fixedly arranged on the inner side of the conveying belt, limiting wheels are arranged at the two ends of each limiting belt in a matched mode, and a driving assembly is arranged on one side of a mounting box; a plurality of fixing parts for fixing the support body are arranged between the two conveying belts at equal intervals, the first sealing box is fixedly arranged at the upper end of the mounting box, and a cooling part is arranged in the first sealing box. The limiting belt is arranged, it is guaranteed that the two conveying belts can rotate synchronously, dislocation and deviation of the two conveying belts are prevented, the first clamping plates and the second clamping plates are connected through the connecting rods, the connecting plates are arranged between the two first clamping plates on the same side, and therefore the first clamping plates and the second clamping plates clamp and fix the support body at the same time; and the guide rod and the ejector rod are matched for use, so that discharging is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of cooling a lamp bead bracket, in particular to a cooling and shaping device for injection molding production of an LED lamp bead bracket. Background Art

[0002] The LED bracket is the base of the LED lamp bead before packaging. On the basis of the LED bracket, the chip is fixed in, the positive and negative electrodes are welded, and then the packaging is performed. In the LED packaging process, injection molding is an important link, which is mainly used to fix the LED chip on the bracket and form a protective layer through injection molding to protect the LED chip and improve its mechanical strength and stability. After the LED lamp bead bracket is injection molded, it has a certain amount of heat inside and its shape is not fixed. In addition, if the LED lamp bead bracket is cooled by natural cooling during the transportation process, not only the cooling efficiency is low, but also the cooling effect is poor. If the LED lamp bead bracket is cooled by direct cold air cooling, the wind will cause a certain wind impact on the LED lamp bead bracket, causing the LED lamp bead bracket to deform.

[0003] The announcement number is: CN115447090B, which discloses a cooling treatment process for LED lamp bead bracket after injection molding. The process cools the LED lamp bead bracket through a cooling treatment device for LED lamp bead bracket after injection molding. The device is provided with fixing components on the conveyor belts symmetrically arranged on both sides, so that the bracket is fixed during transportation. However, the contact area between the conveyor belt and the conveyor shaft in the above device is small, and there is no connection between the two conveyor belts. In actual use, if one of the conveyor belts slides during transportation, the fixing components on the two conveyor belts will be misaligned and offset. At the same time, It will cause the bracket to be squeezed and deformed, thereby causing damage to the lamp bead bracket, and the above-mentioned cooling device clamps and fixes the bracket on both sides in the length direction through the alignment plate, and the alignment plate clamps and fixes the bracket through the alignment spring to provide elastic force. If it is necessary to move the alignment plate away from the bracket and unload the bracket, since the above-mentioned cooling device requires the fixed component to be rotated to the bottom of the conveyor belt, the alignment plate can be moved away from the bracket by the dead weight of the lower pressure plate. Therefore, after the cooled bracket moves to one end of the conveyor belt, the alignment plate will still clamp and fix the bracket, making it inconvenient to remove the processed bracket in actual production.

[0004] Based on this, a cooling and shaping device for injection molding production of LED lamp bead brackets is now provided, which can eliminate the disadvantages of existing devices. Summary of the invention

[0005] The purpose of the present invention is to provide a cooling and shaping device for injection molding production of LED lamp bead brackets, so as to solve the problem that the conveyor belt in the background technology is prone to slipping, causing damage to the bracket and making it inconvenient to unload the bracket.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cooling and shaping device for injection molding production of LED lamp bead brackets, comprising a conveyor belt and a first sealing box, wherein the two conveyor belts are symmetrically arranged inside the installation box, the inner sides of the conveyor belts are fixedly provided with limiting belts, both ends of the limiting belts are matched with limiting wheels, one side of the installation box is provided with a driving component for driving the conveyor belt to rotate, a plurality of fixing components for fixing the bracket body are equidistantly arranged between the two conveyor belts, the fixing components comprise a first clamping plate, the first clamping plate is slidably arranged on the upper end of the fixing frame, the first clamping plates are symmetrically arranged in the length direction of the fixing frame, one end of the first clamping plate is hinged with a connecting rod, the other end of the connecting rod is hinged with a second clamping plate, one side of the first clamping plate is fixedly provided with a push rod, and the inside of the installation box is provided with a push rod for facilitating pushing of the push rod The first clamping plate and the second clamping plate are used to clamp the bracket body. The upper end of the fixed frame is provided with a placement groove, and a lifting frame is slidably provided in the placement groove. A material discharge frame is fixedly provided on the upper end of the lifting frame, and a top rod is symmetrically provided on the bottom end of the lifting frame. A lower mold is provided on one side of the installation box, and an upper mold is provided above the lower mold. A material taking component for taking material from the bracket body is provided on the other side of the installation box. The first sealed box is fixedly provided on the upper end of the installation box, and a cooling component is provided inside the first sealed box. The cooling component includes a cooling box, and an air inlet box is fixedly provided inside the cooling box. A cooling pipe is provided below the air inlet box. A cooling mechanism for cooling the cooling pipe is provided on one side of the installation box, and an exhaust mechanism for exhausting air is provided below the first sealed box.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0009] In an optional scheme: the driving assembly includes a driving roller and a transmission roller, and the two ends of the two conveyor belts are respectively matched with a driving roller and a transmission roller, and a transmission shaft is fixed between the two coaxial driving rollers and the transmission rollers, and the limiting wheels at both ends of the limiting belt are respectively fixed on the driving rollers and the transmission rollers at both ends of the conveyor belt, and the rotating shafts at one end of the driving roller and the transmission roller on the same side are respectively rotatably arranged in the rotating holes at both ends of the retaining plate, and the two retaining plates are fixed inside the installation box, and the rotating shaft at one end of one driving roller is fixedly connected to the output end of the first motor, and the first motor is fixed on one side of the installation box.

[0010] In an optional scheme: the material picking assembly includes a robotic arm, which is fixed on one side of the installation box, and the robotic arm is arranged at a position relative to the lower mold. The working end of the robotic arm is provided with an adsorption plate, and the interior of the adsorption plate is hollow. The bottom end of the adsorption plate is provided with a plurality of adsorption holes, and the input end of the adsorption plate is connected with the output end of the external pump body. The upper end of the lower mold is fixed with a plurality of first guide slide rods, and sliding holes are provided at positions corresponding to the positions of the upper mold and the first guide slide rods. An outer box is fixedly provided on the outer side of the lower mold, and a plurality of support plates are fixedly provided at the bottom end of the lower mold. The plurality of support plates are fixedly provided at the bottom end of the outer box, and the first mounting plate is fixedly provided at the bottom end of the outer box. The first mounting plate is fixedly provided on one side of the installation box.

[0011] The camming mechanism comprises a guide plate, the two guide plates being symmetrically arranged on the inner side of the installation box, the guide plates being arranged at the same height as the push rod at the upper end of the conveyor belt, one end of the guide plate being inclined and being slidably provided with a second fixing plate on the push rod, the second fixing plate being fixedly provided on the upper end of the fixing frame, a first tension spring being provided between one side of the first clamping plate and the second fixing plate, a connecting plate being provided between the two first clamping plates on the same side, one end of the push rod being provided with a ball bearing, a sliding hole being provided on one side of the first clamping plate, a second guide slide bar being slidably provided in the sliding hole, the second guide slide bar being fixedly provided on the upper end of the fixing frame, a third guide slide bar being symmetrically provided on one side of the second clamping plate, the third guide slide bar being slidably provided in a circular through hole on one side of the third fixing plate, the third fixing plate being fixedly provided on the upper end of the fixing frame, one side of the second clamping plate being fixedly connected to one end of the two second tension springs respectively, the other end of the second tension spring being fixedly connected to the third fixing plate, and the two second tension springs being coaxially provided with the two third guide slide bars respectively.

[0012] In an optional scheme: the cooling mechanism includes a water pump, the water pump is fixedly arranged at the upper end of the liquid storage tank, the liquid storage tank is fixedly arranged at the upper end of the second mounting plate, the second mounting plate is fixedly arranged at one side of the mounting box, the water pump input end is connected with the interior of the liquid storage tank, the water pump output end is provided with a bypass joint, the cooling pipe input end is connected with the bypass joint, the cooling pipe output end is connected with the interior of the liquid storage tank, a plurality of overflow weirs are fixedly arranged inside the liquid storage tank, mounting pipes are symmetrically arranged on one side of the overflow weir, refrigerators are arranged inside the mounting pipes, a plurality of fin plates are arranged at the cooling end of the refrigerator, the air inlet box input end is connected with an air inlet pipe, the air inlet pipe input end is connected with the output end of the external air supply component, a plurality of air shower holes are arranged at the bottom end of the cooling box, and a dewatering component for treating condensed water on the cooling pipe is arranged inside the cooling box.

[0013] In an optional scheme: the water removal assembly includes a plurality of wiper blocks, and wiper blocks are slidably provided at the straight sections of the cooling pipe, and the plurality of wiper blocks are fixedly arranged at the bottom end of the mounting groove rod, and guide groove rods are slidably provided on both sides of the mounting groove rod, and the guide groove rods are fixedly arranged inside the cooling box, and a sliding groove is provided at the upper end of the mounting groove rod, and a sliding column is slidably provided in the sliding groove, and the sliding column is fixedly arranged at the bottom end of the friction ring, and an annular groove is provided on the inner side of the friction ring, and a support frame is symmetrically slidably provided in the annular groove, and the support frame is fixedly arranged inside the cooling box, and a friction wheel is frictionally provided on the outer side of the friction ring, and the friction wheel is rotatably arranged in the protection box, and the protection box is fixedly arranged on one side of the first sealing box, and the rotating shaft at one end of the friction wheel is fixedly connected to the output end of the second motor, and the second motor is fixedly arranged at the upper end of the first sealing box, and a sealing tube is provided inside the cooling box and below the cooling pipe, and a drainage pipe is connected to one side of the sealing tube, and a sealing component for preventing the air inside the cooling box from being discharged through the drainage pipe is connected to one end of the drainage pipe.

[0014] In an optional solution: the sealing component includes a sealing tube, the input end of the sealing tube is connected to one end of the drain pipe, the discharge end of the sealing tube is slidably and tightly fitted with a sealing plug, the upper end of the sealing plug is fixed with a fixing rod, one end of the fixing rod is fixed with a floating ring, the floating ring is slidably arranged inside the sealing tube, a fourth fixing plate is slidably arranged on the fixing rod, the fourth fixing plate is fixedly arranged inside the sealing tube, and a second reset spring is arranged between the upper end of the sealing plug and the bottom end of the fixing plate.

[0015] In an optional solution: an electromagnetic valve is provided on the diversion joint, the other end of the electromagnetic valve is connected to a delivery pipe, the other end of the delivery pipe is connected to the interior of the outer box, the upper end of the interior of the outer box is connected to a return pipe, the other end of the return pipe is connected to the interior of the liquid storage tank.

[0016] In an optional scheme: the exhaust mechanism includes a second sealed box, the second sealed box is fixedly arranged on the inner side of the installation box, a plurality of installation tubes are arranged at the bottom end of the second sealed box, exhaust fans are arranged in the installation tubes, second rotating doors are hinged at both ends of the second sealed box, first torsion springs are arranged at the connection between the second rotating door and the second sealed box, the first rotating door is hinged at the bottom end of the first sealed box, second torsion springs are arranged at the connection between the first rotating door and the bottom end of the first sealed box, one end of the first rotating door is tightly arranged with one end of the second rotating door, first rollers are symmetrically arranged at the upper end of the fixed frame, first rollers are rotatably arranged at both ends of the first roller, first fixed plates are symmetrically arranged on both sides of the inside of the installation box, and the first fixed plates are tightly arranged with the first rollers at the upper and lower ends of the conveyor belt respectively.

[0017] In an optional scheme: a second roller is rotatably provided at the bottom end of the push rod, the push rod is slidably provided in the mounting hole at the bottom end of the fixed frame, a circular plate is fixedly provided at one end of the push rod, a first return spring is provided between the circular plate and the bottom end of the fixed frame, a guide rod is fixedly provided inside the mounting box near one end of the first motor, the cross-section of the guide rod is an isosceles triangle, and the guide rod is provided at a position corresponding to one end of the push rod at the upper end of the conveyor belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a limiting belt inside the conveyor belt, and limiting wheels are provided at both ends of the limiting belt, so that when in use, the two conveyor belts can be ensured to rotate synchronously to prevent the two conveyor belts from being misaligned and offset. The first clamping plate and the second clamping plate are connected by a connecting rod, and a connecting plate is provided between the two first clamping plates on the same side, so that when the bracket body is clamped and fixed, the first clamping plate and the second clamping plate can clamp and fix the bracket body at the same time, preventing the two ends of the bracket body from being fixed first and then the other two ends from being fixed, causing wear on both sides of the bracket body. At the same time, by symmetrically arranging a push rod at the bottom end of the lifting frame, when unloading, the guide rod and the push rod are used in cooperation, so that the bracket body is easy to lift up, thereby facilitating unloading, solving the problem that the conveyor belt is easy to slip, causing damage to the bracket and inconvenient unloading of the bracket.

[0020] 2. The present invention symmetrically arranges the first roller at the upper end of the fixed frame, and the first roller is arranged at both ends of the first roller. The first roller is used in conjunction with the first fixed plate to increase the stability of the fixed frame when it moves. At the same time, when the fixed frame moves below the conveyor belt, the first roller can support the fixed frame below the conveyor belt to reduce the deformation of the conveyor belt. A cooling pipe is arranged inside the cooling box to increase the cooling and shaping effect of the bracket body, and a scraper block is arranged on the cooling pipe to remove the condensed water on the cooling pipe. At the same time, a sealing component is arranged at one end of the drain pipe to prevent the air inside the cooling box from being discharged through the drain pipe, and the cooling liquid is circulated to the inside of the outer box to facilitate cooling and demolding of the lower mold, thereby increasing the practicality of the cooling and shaping device for injection molding production of LED lamp bead brackets. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation of the robotic arm of the present invention.

[0023] Figure 3 This is a schematic diagram of the installation of the retaining plate of the present invention.

[0024] Figure 4 It is a schematic diagram of the internal structure of the installation box of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the limiting belt and the limiting wheel of the present invention.

[0026] Figure 6 It is a schematic diagram of the upper structure of the fixing frame of the present invention.

[0027] Figure 7 It is a schematic diagram of the installation of the push rod of the present invention.

[0028] Figure 8 It is a schematic diagram of the lower mold structure of the present invention.

[0029] Fig. 9 It is a schematic diagram of the guide plate structure of the present invention.

[0030] Fig.10 It is a schematic diagram of the structure of the first revolving door and the second revolving door of the present invention.

[0031] Fig.11 It is a schematic diagram of the structure of the second sealed box of the present invention.

[0032] Fig.12 It is a schematic diagram of the internal structure of the cooling box of the present invention.

[0033] Fig.13 It is a schematic diagram of the friction ring structure of the present invention.

[0034] Fig.14 It is a schematic diagram of the cooling tube structure of the present invention.

[0035] Fig.15 It is a schematic diagram of the internal structure of the sealing tube of the present invention.

[0036] Fig.16 It is a schematic diagram of the internal structure of the water pump of the present invention.

[0037] Fig.17 It is a schematic diagram of the structure of the refrigerator of the present invention.

[0038] Fig.18 It is a schematic diagram of the guide rod structure of the present invention.

[0039] Figure numerals: 11 conveyor belt, 12 limiting belt, 13 limiting wheel, 14 holding plate, 15 first motor, 16 mounting box, 17 fixed frame, 18 lifting frame, 19 unloading frame, 20 first clamping plate, 21 push rod, 22 first tension spring, 23 connecting rod, 24 second clamping plate, 25 second tension spring, 26 push rod, 27 first return spring, 28 guide rod, 29 guide plate, 30 first roller, 31 mounting frame, 32 first fixed plate, 33 lower mold, 34 outer box, 35 upper mold, 36 mechanical arm, 37 Adsorption plate, 38 first sealing box, 39 first rotating door, 40 second sealing box, 41 second rotating door, 42 cooling box, 43 air inlet box, 44 cooling pipe, 45 wiper block, 46 mounting groove rod, 47 guide groove rod, 48 sliding column, 49 friction ring, 50 friction wheel, 51 second motor, 52 water receiving tray, 53 sealing tube, 54 floating ring, 55 second return spring, 56 sealing plug, 57 water pump, 58 liquid storage tank, 59 refrigerator, 60 overflow weir, 61 electromagnetic valve, 62 exhaust fan, 63 bracket body. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] Example 1

[0042] In one embodiment, Figure 1-Figure 18As shown, a cooling and shaping device for injection molding production of LED lamp bead brackets includes a conveyor belt 11 and a first sealing box 38. The two conveyor belts 11 are symmetrically arranged inside the installation box 16. The inner side of the conveyor belt 11 is fixed with a limiting belt 12. Both ends of the limiting belt 12 are matched with limiting wheels 13. One side of the installation box 16 is provided with a driving component for driving the conveyor belt 11 to rotate. A plurality of fixing components for fixing the bracket body 63 are evenly spaced between the two conveyor belts 11. The fixing components include a first clamping plate 20. The first clamping plate 20 is slidably arranged on the upper end of the fixing frame 17, and the first clamping plate 20 is symmetrically arranged in the length direction of the fixing frame 17. A connecting rod 23 is hinged at one end of the first clamping plate 20, and a second clamping plate 24 is hinged at the other end of the connecting rod 23. A push rod 21 is fixedly arranged on one side of the first clamping plate 20. A clamping mechanism is arranged on the inner side of the installation box 16 so that the push rod 21 can push the first clamping plate 20 and the second clamping plate 24 to clamp the bracket body 63. A placement groove is arranged on the upper end of the fixing frame 17. A lifting frame 18 is slidably provided, a material placing frame 19 is fixedly provided on the upper end of the lifting frame 18, and a push rod 26 is symmetrically provided at the bottom end of the lifting frame 18. A lower mold 33 is provided on one side of the installation box 16, and an upper mold 35 is provided above the lower mold 33. A material taking component for taking material from the bracket main body 63 is provided on the other side of the installation box 16. The first sealed box 38 is fixedly provided at the upper end of the installation box 16, and a cooling component is provided inside the first sealed box 38. The cooling component includes a cooling box 42, and a cooling box 42 is fixedly provided inside. There is an air inlet box 43, a cooling pipe 44 is provided below the air inlet box 43, a cooling mechanism for cooling the cooling pipe 44 is provided on one side of the installation box 16, an exhaust mechanism for exhausting air is provided below the first sealed box 38, and the first clamping plate 20 and the second clamping plate 24 are conveniently used to clamp and release the bracket body 63 at the same time through the clamping mechanism, the cooling mechanism is convenient for cooling the air discharged from the air inlet box 43, so as to increase the cooling and shaping speed of the bracket body 63, and the exhaust mechanism is convenient for accelerating the air flow inside the first sealed box 38;

[0043] The driving assembly includes a driving roller and a transmission roller. Both ends of the two transmission belts 11 are respectively matched with a driving roller and a transmission roller. A transmission shaft is fixed between the two coaxial driving rollers and the transmission rollers. The limiting wheels 13 at both ends of the limiting belt 12 are respectively fixed on the driving rollers and the transmission rollers at both ends of the transmission belt 11. The rotating shafts at one end of the driving roller and the transmission roller on the same side are respectively rotatably arranged in the rotating holes at both ends of the retaining plate 14. The two retaining plates 14 are fixedly arranged inside the installation box 16. The rotating shaft at one end of one of the driving rollers is fixedly connected to the output end of the first motor 15. The first motor 15 is fixedly arranged at one end of the installation box 16. On the side, during use, when the bracket body 63 needs to be conveyed and cooled, the first motor 15 is started, and the output end of the first motor 15 drives the two driving rollers to rotate, and the driving roller and the transmission roller cooperate to drive the transmission belt 11 to rotate, and at the same time, the driving roller and the transmission roller drive the limiting wheel 13 to rotate, and the limiting wheel 13 is used in conjunction with the limiting belt 12 to prevent the two transmission belts 11 from being misaligned. The transmission belt 11 drives several fixed components to move. When the fixed components move a fixed distance, the first motor 15 stops driving the transmission belt 11 to rotate. The first motor 15 here can use a servo motor or other motors, which will not be repeated here.

[0044] The material picking assembly includes a mechanical arm 36, which is fixed on one side of the installation box 16. The mechanical arm 36 is arranged at a position relative to the lower mold 33. The working end of the mechanical arm 36 is provided with an adsorption plate 37, and the interior of the adsorption plate 37 is hollow. The bottom end of the adsorption plate 37 is provided with a plurality of adsorption holes. The input end of the adsorption plate 37 is connected with the output end of the external pump body. The upper end of the lower mold 33 is fixed with a plurality of first guide slide bars, and the upper mold 35 is provided with sliding holes at positions corresponding to the first guide slide bars. The outer side of the lower mold 33 is fixed with an outer box 34, and the bottom end of the lower mold 33 is fixed with a plurality of support plates. The plurality of support plates are fixedly arranged at the bottom end of the outer box 34. The bottom end of the outer box 34 is fixed with a first mounting plate, and the first mounting plate is fixedly arranged at On one side of the installation box 16, when in use, when injection molding is performed, the lower mold 33 is used in conjunction with the upper mold 35 to perform injection molding on the bracket main body 63. After the injection molding is completed, the upper mold 35 is moved away from the upper end of the lower mold 33, and then the working end of the robotic arm 36 is controlled to drive the adsorption plate 37 to move to the upper end of the bracket main body 63, and then the external pump body is operated to make the adsorption plate 37 adsorb the bracket main body 63, and then the working end of the robotic arm 36 drives the bracket main body 63 to move to the upper end of the discharge rack 19, and then the adsorption plate 37 is separated from the bracket main body 63, so that the bracket main body 63 is placed on the upper end of the discharge rack 19. It is worth noting that in the present invention, the lower mold 33, the upper mold 35, the robotic arm 36 and the external pump body all use existing components, and the technology is relatively mature. The figure is a schematic diagram and will not be repeated here.

[0045] The clamping mechanism includes a guide plate 29, and the two guide plates 29 are symmetrically arranged on the inner side of the installation box 16. The guide plates 29 are arranged at the same height as the push rod 21 at the upper end of the conveyor belt 11. One end of the guide plate 29 is inclined. A second fixing plate is slidably provided on the push rod 21, and the second fixing plate is fixedly arranged on the upper end of the fixing frame 17. A first tension spring 22 is provided between one side of the first clamping plate 20 and the second fixing plate, and a connecting plate is provided between the two first clamping plates 20 on the same side. A ball is provided at one end of the push rod 21, and a sliding hole is provided on one side of the first clamping plate 20. A second guide slide bar is slidably provided in the sliding hole, and the second guide slide bar is fixedly arranged on the upper end of the fixing frame 17. A third guide slide bar is symmetrically provided on one side of the second clamping plate 24, and the third guide slide bar is slidably provided in a circular through hole on one side of the third fixing plate. The third fixing plate is fixedly arranged on the upper end of the fixing frame 17, and the second clamping plate 24 One side is fixedly connected to one end of two second tension springs 25, and the other end of the second tension spring 25 is fixedly connected to the third fixed plate. The two second tension springs 25 are coaxially arranged with the two third guide slide bars. When in use, when the first motor 15 drives a fixed frame 17 to move to one side of the lower mold 33 through the transmission belt 11, one end of the two push rods 21 respectively contacts with the inclined ends of the two guide plates 29, and the injection molded bracket body 63 is placed on the upper end of the fixed frame 17 through the mechanical arm 36. Then, when the first motor 15 moves again, the inclined end of the guide plate 29 guides the push rod 21. Since a connecting plate is provided between the two first clamping plates 20 on the same side, the four first clamping plates 20 move at the same time, and the first clamping plate 20 drives the second clamping plate 24 to move through the connecting rod 23. When one end of the push rod 21 contacts the plane of the guide plate 29, several first clamping plates 20 and second clamping plates 24 complete the clamping and fixing of the bracket body 63.

[0046] The cooling mechanism includes a water pump 57, which is fixed on the upper end of a liquid storage tank 58, which is fixed on the upper end of a second mounting plate, which is fixed on one side of the mounting box 16, the input end of the water pump 57 is connected to the inside of the liquid storage tank 58, and the output end of the water pump 57 is provided with a shunt joint, the input end of the cooling pipe 44 is connected to the shunt joint, and the output end of the cooling pipe 44 is connected to the inside of the liquid storage tank 58, and a plurality of overflow weirs 60 are fixedly provided inside the liquid storage tank 58, and mounting pipes are symmetrically provided on one side of the overflow weir 60, and refrigerators 59 are provided inside the mounting pipes, and a plurality of fin plates are provided at the cooling end of the refrigerator 59, the input end of the air inlet box 43 is connected to an air inlet pipe, and the input end of the air inlet pipe is connected to the output end of the external air supply component, and a plurality of air shower holes are provided at the bottom end of the cooling box 42 When in use, after the fixing frame 17 drives the bracket body 63 to move to the bottom of the cooling box 42, the external air supply component transports gas to the inside of the air inlet box 43, and the air inlet box 43 discharges the gas evenly. At the same time, the water pump 57 transports the refrigerant after refrigeration in the liquid storage tank 58 to the inside of the cooling pipe 44, and the output end of the cooling pipe 44 returns the refrigerant to the inside of the liquid storage tank 58. When the refrigerant flows in the cooling pipe 44, it can drive the heat in the gas, so that the gas will be cooled. The coolant returning to the liquid storage tank 58 is cooled again under the action of the overflow weir 60 and the refrigerator 59, and then the cooled gas is discharged through the air shower hole, so that the bracket body 63 is cooled and shaped. At the same time, the air shower hole can reduce the impact of the gas on the bracket body 63. A dewatering component for processing condensed water on the cooling pipe 44 is provided inside the cooling box 42.

[0047] The dewatering assembly includes a plurality of wiper blocks 45. The wiper blocks 45 are slidably provided at the straight sections of the cooling pipes 44. The plurality of wiper blocks 45 are fixed at the bottom end of the mounting groove rod 46. Guide groove rods 47 are slidably provided on both sides of the mounting groove rod 46. The guide groove rods 47 are fixed inside the cooling box 42. A sliding groove is provided at the upper end of the mounting groove rod 46. A sliding column 48 is slidably provided in the sliding groove. The sliding column 48 is fixed at the bottom end of the friction ring 49. An annular groove is provided on the inner side of the friction ring 49. A support frame is symmetrically slidably provided in the annular groove. The support frame is fixed inside the cooling box 42. A friction wheel 50 is frictionally provided on the outer side of the friction ring 49. The friction wheel 50 is rotatably provided in the protection box. The protection box is fixed on one side of the first sealing box 38. The rotating shaft at one end of the friction wheel 50 is fixedly connected to the output end of the second motor 51. The second motor 51 is fixed at the upper end of the first sealing box 38. The interior of the cooling box 42 is connected to the cooling box 42. A sealing tube 53 is provided below the tube 44, and a drainage pipe is connected to one side of the sealing tube 53. When in use, when the coolant flows inside the cooling tube 44, condensed water will be generated on the surface of the cooling tube 44. At this time, the second motor 51 is started, and the output end of the second motor 51 drives the friction wheel 50 to rotate, the friction wheel 50 drives the friction ring 49 to rotate, and the friction ring 49 drives the sliding column 48 to rotate. The sliding column 48 slides in the sliding groove at the upper end of the mounting groove rod 46, so that the mounting groove rod 46 drives a plurality of wiper blocks 45 to reciprocate along the length direction of the guide groove rod 47, so that the condensed water on the straight section of the cooling tube 44 is cleaned, and the cleaned condensed water falls into the water receiving tray 52, and the water receiving tray 52 is discharged through the drainage port. At the same time, a dehumidification plate can be provided between one side of the second motor 51 and one side of the second rotating door 41, which is not drawn in the figure and can be selected according to actual use. One end of the drainage pipe is connected to a sealing component for preventing the air inside the cooling box 42 from being discharged through the drainage pipe.

[0048] The sealing component includes a sealing tube 53, the input end of the sealing tube 53 is connected to one end of the drain pipe, the discharge end of the sealing tube 53 is slidably and tightly fitted with a sealing plug 56, the upper end of the sealing plug 56 is fixed with a fixing rod, one end of the fixing rod is fixed with a floating ring 54, the floating ring 54 is slidably arranged inside the sealing tube 53, a fourth fixing plate is slidably arranged on the fixing rod, the fourth fixing plate is fixedly arranged inside the sealing tube 53, a second reset spring 55 is arranged between the upper end of the sealing plug 56 and the bottom end of the fixing plate, when in use, when condensed water enters the sealing tube 53 through the drain pipe, the second reset spring 55 is arranged between the upper end of the sealing plug 56 and the bottom end of the fixing plate, The sealing plug 56 blocks the drainage end of the sealing tube 53 so that condensed water is stored inside the sealing tube 53. As the liquid level inside the sealing tube 53 increases, the floating ring 54 always floats on the upper end of the liquid surface, so that when the liquid level is higher than the initial position of the floating ring 54, the floating ring 54 drives the sealing plug 56 to move with the increase of the liquid level. When the sealing plug 56 is separated from the drainage end, part of the condensed water is discharged. When the liquid level drops, under the action of the second reset spring 55, the sealing plug 56 re-seals the sealing tube 53, so that one end of the drain pipe is always in a closed state, thereby preventing air from being discharged through the drain pipe.

[0049] The diverter joint is provided with an electromagnetic valve 61, and the other end of the electromagnetic valve 61 is connected to a delivery pipe, and the other end of the delivery pipe is connected to the interior of the outer box 34. The upper end of the interior of the outer box 34 is connected to a return pipe, and the other end of the return pipe is connected to the interior of the liquid storage tank 58. When in use, after the injection of the lower mold 33 is completed, the electromagnetic valve 61 is controlled to open, so that the water pump 57 delivers part of the coolant to the interior of the outer box 34. After the coolant enters the interior of the outer box 34, it can assist the lower mold 33 in cooling down, thereby facilitating better cooling and demoulding of the bracket body 63.

[0050] The exhaust mechanism includes a second sealed box 40, which is fixedly arranged on the inner side of the installation box 16. A plurality of installation tubes are arranged at the bottom of the second sealed box 40, and exhaust fans 62 are arranged in the installation tubes. Second rotating doors 41 are hinged at both ends of the second sealed box 40, and first torsion springs are arranged at the connection between the second rotating door 41 and the second sealed box 40. The first rotating door 39 is hinged at the bottom end of the first sealed box 38, and a second torsion spring is arranged at the connection between the first rotating door 39 and the bottom end of the first sealed box 38. One end of the first rotating door 39 is tightly arranged with one end of the second rotating door 41. The upper end of the fixed frame 17 is symmetrically provided with first rollers 31, and the first rollers 30 are rotatably arranged at both ends of the first rollers 31. The inside of the installation box 16 is symmetrically provided with first fixed plates 32 on both sides, and the first fixed plates 32 are tightly arranged with the first rollers 30 at the upper and lower ends of the conveyor belt 11 respectively. When in use, when the conveyor belt 11 drives the fixed frame 17 to move to the first sealed box 17, the conveyor belt 11 is used to drive the fixed frame 17 to move to the first sealed box 17. During the process of sealing the box 38, the first roller 30 on one side of the first roller 31 first contacts the first roller 30, and then the first roller 31 pushes the first rotating door 39 to rotate, and then the push rod 26 contacts the second rotating door 41, so as to push the second rotating door 41 to rotate. When the first roller 31 and the second rotating door 41 are respectively separated from the first rotating door 39 and the second rotating door 41, under the action of the first torsion spring and the second torsion spring, the second rotating door 41 and the first rotating door 39 are both returned to the initial position. At this time, the first sealed box 38 and the second sealed box 40 are combined into a relatively closed space, and then the air is discharged through the exhaust fan 62, so as to increase the air flow speed under the first sealed box 38, thereby facilitating the cooling of the bracket body 63. At the same time, the first roller 30 is used in conjunction with the first fixed plate 32, so as to increase the stability of the fixed frame 17 when it moves, and at the same time, it is convenient to reduce the gravity generated by several fixed frames 17 on the conveyor belt 11, so that the conveyor belt 11 is deformed.

[0051] Example 2

[0052] The difference from Example 1 is that: the bottom end of the push rod 26 is rotatably provided with a second roller, the push rod 26 is slidably arranged in the mounting hole at the bottom end of the fixing frame 17, one end of the push rod 26 is fixed with a circular plate, and a first return spring 27 is arranged between the circular plate and the bottom end of the fixing frame 17, and a guide rod 28 is fixedly arranged inside the installation box 16 near one end of the first motor 15, and the cross-section of the guide rod 28 is an isosceles triangle, and the guide rod 28 is arranged at a position corresponding to one end of the push rod 26 at the upper end of the conveyor belt 11. When in use, after the bracket body 63 is cooled, the conveyor belt 11 drives the bracket body 63 to move to one end of the conveyor belt 11 During the movement, the push rod 21 separates from the guide plate 29, and under the action of the first tension spring 22 and the second tension spring 25, the first clamping plate 20 and the second clamping plate 24 release the fixation of the bracket body 63, and then the second roller at one end of the push rod 26 contacts the inclined surface of the guide rod 28, and the guide rod 28 guides the push rod 26, so that the push rod 26 pushes the lifting frame 18 to move, and the lifting frame 18 pushes the bracket body 63 to move through the unloading frame 19. When the second roller contacts the upper end of the guide rod 28, the first motor 15 stops. At this time, the unloading frame 19 lifts the bracket body 63, making it convenient for the staff to remove the bracket body 63.

[0053] The above embodiment discloses a cooling and shaping device for injection molding production of LED lamp bead brackets, wherein the first motor 15 is started, the conveyor belt 11 drives a fixing frame 17 to move to a position on one side of the lower mold 33 and then stops, and the lower mold 33 is used in conjunction with the upper mold 35 to perform injection molding on the bracket body 63. After the injection molding is completed, the electromagnetic valve 61 is controlled to open so that the water pump 57 transports part of the coolant to the inside of the outer box 34. After the coolant enters the inside of the outer box 34, it can assist the lower mold 33 in cooling down, thereby facilitating better cooling and demolding of the bracket body 63. Then The upper mold 35 is moved away from the upper end of the lower mold 33, and then the mechanical arm 36 is controlled to place the bracket body 63 on the upper end of the material placing rack 19. When the first motor 15 moves again, the inclined end of the guide plate 29 guides the push rod 21. Since a connecting plate is provided between the two first clamping plates 20 on the same side, the four first clamping plates 20 move at the same time, and the first clamping plate 20 drives the second clamping plate 24 to move through the connecting rod 23. When one end of the push rod 21 contacts the plane of the guide plate 29, the first clamping plates 20 and the second clamping plates 24 complete the clamping and fixing of the bracket body 63.

[0054] Subsequently, during the process where the conveyor belt 11 drives the fixing frame 17 to move to the bottom of the first sealed box 38, the first roller 30 on the side of the first roller 31 first contacts the first roller 30, and then the first roller 31 pushes the first rotating door 39 to rotate, and then the push rod 26 contacts the second rotating door 41, so as to push the second rotating door 41 to rotate. When the first roller 31 and the second rotating door 41 are respectively separated from the first rotating door 39 and the second rotating door 41, under the action of the first torsion spring and the second torsion spring, the second rotating door 41 and the first rotating door 39 are both returned to the initial position. At this time, the first sealed box 38 and the second sealed box 40 are combined into a relatively closed space, and the external air supply component conveys gas to the inside of the air inlet box 43, and the air inlet box 43 discharges the gas evenly. At the same time, the water pump 57 conveys the refrigerant after refrigeration in the liquid storage tank 58 to the inside of the cooling pipe 44 , the output end of the cooling pipe 44 returns the refrigerant to the inside of the liquid storage tank 58. When the refrigerant flows inside the cooling pipe 44, it can drive the heat in the gas, so that the gas will be cooled. The coolant flowing back to the liquid storage tank 58 is cooled again under the action of the overflow weir 60 and the refrigerator 59, and then the cooled gas is discharged through the air shower hole, so that the bracket body 63 is cooled and shaped. At the same time, the air shower hole can reduce the impact of the gas on the bracket body 63. Then the air is discharged through the exhaust fan 62, so that it is convenient to increase the air flow speed below the first sealing box 38, so as to facilitate the cooling of the bracket body 63. At the same time, the first roller 30 is used in conjunction with the first fixing plate 32, so as to facilitate the stability of the fixing frame 17 when it moves, and at the same time, it is convenient to reduce the gravity generated by several fixing frames 17 on the conveyor belt 11, so that the conveyor belt 11 is deformed;

[0055] When the bracket body 63 has been cooled, the conveyor belt 11 drives the bracket body 63 to move to one end of the conveyor belt 11. During the movement, the push rod 21 separates from the guide plate 29. Under the action of the first tension spring 22 and the second tension spring 25, the first clamping plate 20 and the second clamping plate 24 release the fixation of the bracket body 63. Then, the second roller at one end of the push rod 26 contacts the inclined surface of the guide rod 28. The guide rod 28 guides the push rod 26, so that the push rod 26 pushes the lifting frame 18 to move. The lifting frame 18 pushes the bracket body 63 to move through the unloading frame 19. When the second roller contacts the upper end of the guide rod 28, the first motor 15 stops. At this time, the unloading frame 19 lifts the bracket body 63, making it convenient for the staff to remove the bracket body 63.

[0056] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A cooling and shaping device for injection molding production of an LED lamp bead bracket, comprising a conveyor belt (11) and a first sealing box (38), wherein the two conveyor belts (11) are symmetrically arranged inside an installation box (16), a limiting belt (12) is fixedly arranged inside the conveyor belt (11), and limiting wheels (13) are arranged at both ends of the limiting belt (12), and a driving component for driving the conveyor belt (11) to rotate is arranged on one side of the installation box (16), and a plurality of fixing components for fixing a bracket body (63) are arranged at equal intervals between the two conveyor belts (11), and the fixing components include a first clamping plate (20), and the first clamping plate (20) is slidably arranged on the upper end of a fixing frame (17), and the first clamping plates (20) are symmetrically arranged in the length direction of the fixing frame (17); It is characterized in that One end of the first clamping plate (20) is hinged with a connecting rod (23), and the other end of the connecting rod (23) is hinged with a second clamping plate (24). A push rod (21) is fixedly provided on one side of the first clamping plate (20). The inner side of the installation box (16) is provided with a clamping mechanism for facilitating the push rod (21) to push the first clamping plate (20) and the second clamping plate (24) to clamp the bracket body (63). A placement groove is provided at the upper end of the fixed frame (17), and a lifting frame (18) is slidably provided in the placement groove. A material placing frame (19) is fixedly provided on the upper end of the lifting frame (18), and a top rod (26) is symmetrically provided at the bottom end of the lifting frame (18). One side of the installation box (16) A lower mold (33) is provided, and an upper mold (35) is provided above the lower mold (33); a material taking component for taking material from the bracket body (63) is provided on the other side of the installation box (16); the first sealed box (38) is fixedly provided on the upper end of the installation box (16); a cooling component is provided inside the first sealed box (38); the cooling component includes a cooling box (42); an air inlet box (43) is fixedly provided inside the cooling box (42); a cooling pipe (44) is provided below the air inlet box (43); a cooling mechanism for cooling the cooling pipe (44) is provided on one side of the installation box (16); and an exhaust mechanism for exhausting air is provided below the first sealed box (38).

2. A cooling and shaping device for injection molding of LED lamp bead bracket according to claim 1, characterized in that: The driving assembly comprises a driving roller and a transmission roller. The two ends of the two transmission belts (11) are respectively matched with a driving roller and a transmission roller. A transmission shaft is fixedly arranged between the two coaxial driving rollers and the transmission rollers. The limiting wheels (13) at both ends of the limiting belt (12) are respectively fixedly arranged on the driving rollers and the transmission rollers at both ends of the transmission belt (11). The rotating shafts at one end of the driving roller and the transmission roller on the same side are respectively rotatably arranged in the rotating holes at both ends of the retaining plate (14). The two retaining plates (14) are both fixedly arranged inside the installation box (16). The rotating shaft at one end of one of the driving rollers is fixedly connected to the output end of the first motor (15). The first motor (15) is fixedly arranged on one side of the installation box (16).

3. A cooling and shaping device for injection molding of LED lamp bead bracket according to claim 1, characterized in that: The material taking assembly comprises a mechanical arm (36), wherein the mechanical arm (36) is fixedly arranged on one side of the installation box (16), and the mechanical arm (36) is arranged at a position relative to the lower mold (33). The working end of the mechanical arm (36) is provided with an adsorption plate (37), and the interior of the adsorption plate (37) is hollow. The bottom end of the adsorption plate (37) is provided with a plurality of adsorption holes. The input end of the adsorption plate (37) is connected with the output end of the external pump body. The upper end of the lower mold (33) is fixedly provided with a plurality of first guide slide bars, and the upper mold (35) is provided with sliding holes at positions corresponding to the positions of the first guide slide bars. The outer side of the lower mold (33) is fixedly provided with an outer box (34), and the bottom end of the lower mold (33) is fixedly provided with a plurality of support plates, and the plurality of support plates are fixedly arranged at the bottom end of the outer box (34). The bottom end of the outer box (34) is fixedly provided with a first installation plate, and the first installation plate is fixedly arranged on one side of the installation box (16).

4. A cooling and shaping device for injection molding of LED lamp bead bracket according to claim 1, characterized in that: The clamping mechanism comprises a guide plate (29), two guide plates (29) are symmetrically arranged on the inner side of the installation box (16), the guide plate (29) is arranged at the same height as the push rod (21) at the upper end of the conveyor belt (11), one end of the guide plate (29) is inclined, a second fixing plate is slidably provided on the push rod (21), the second fixing plate is fixedly provided on the upper end of the fixing frame (17), a first tension spring (22) is provided between the first clamping plate (20) and one side of the second fixing plate, a connecting plate is provided between the two first clamping plates (20) on the same side, a ball is provided at one end of the push rod (21), and the first A sliding hole is provided on one side of the clamping plate (20), and a second guide slide bar is slidably provided in the sliding hole. The second guide slide bar is fixedly arranged on the upper end of the fixing frame (17). A third guide slide bar is symmetrically provided on one side of the second clamping plate (24), and the third guide slide bar is slidably arranged in a circular through hole on one side of the third fixing plate. The third fixing plate is fixedly arranged on the upper end of the fixing frame (17). One side of the second clamping plate (24) is respectively fixedly connected to one end of two second tension springs (25), and the other end of the second tension spring (25) is fixedly connected to the third fixing plate. The two second tension springs (25) are respectively coaxially arranged with the two third guide slide bars.

5. A cooling and shaping device for injection molding of LED lamp bead bracket according to claim 1, characterized in that: The cooling mechanism comprises a water pump (57), the water pump (57) being fixedly arranged at the upper end of a liquid storage tank (58), the liquid storage tank (58) being fixedly arranged at the upper end of a second mounting plate, the second mounting plate being fixedly arranged at one side of the mounting box (16), the input end of the water pump (57) being in communication with the interior of the liquid storage tank (58), the output end of the water pump (57) being provided with a shunt joint, the input end of the cooling pipe (44) being in communication with the shunt joint, the output end of the cooling pipe (44) being in communication with the interior of the liquid storage tank (58), the liquid storage tank (58) ) is fixedly provided with a plurality of overflow weirs (60) inside, a mounting pipe is symmetrically provided on one side of the overflow weir (60), a refrigerator (59) is provided inside the mounting pipe, a plurality of fin plates are provided at the cooling end of the refrigerator (59), an air inlet pipe is connected to the input end of the air inlet box (43), the input end of the air inlet pipe is connected to the output end of the external air supply component, a plurality of air shower holes are provided at the bottom end of the cooling box (42), and a dewatering component for treating condensed water on the cooling pipe (44) is provided inside the cooling box (42).

6. A cooling and shaping device for injection molding of LED lamp bead brackets according to claim 5, characterized in that: The dewatering assembly comprises a plurality of wiper blocks (45), and the straight sections of the cooling pipe (44) are all slidably provided with wiper blocks (45), and the plurality of wiper blocks (45) are all fixedly arranged at the bottom end of the mounting groove rod (46), and guide groove rods (47) are slidably provided on both sides of the mounting groove rod (46), and the guide groove rods (47) are all fixedly arranged inside the cooling box (42), and a sliding groove is provided at the upper end of the mounting groove rod (46), and a sliding column (48) is slidably provided in the sliding groove, and the sliding column (48) is fixedly arranged at the bottom end of the friction ring (49), and an annular groove is provided on the inner side of the friction ring (49), and a support frame is symmetrically slidably provided in the annular groove, and the support frame is fixedly arranged at the bottom end of the friction ring (49), and an annular groove is provided on the inner side of the friction ring (49), and a support frame is symmetrically slidably provided in the annular groove, and the support frame is fixedly arranged at the bottom end of the friction ring (49), and the friction ring (49) is provided with an annular groove. The cooling box (42) is fixedly arranged inside the cooling box, and a friction wheel (50) is frictionally arranged on the outer side of the friction ring (49). The friction wheel (50) is rotatably arranged in the protection box. The protection box is fixedly arranged on one side of the first sealing box (38). The rotating shaft at one end of the friction wheel (50) is fixedly connected to the output end of the second motor (51). The second motor (51) is fixedly arranged at the upper end of the first sealing box (38). A sealing tube (53) is arranged inside the cooling box (42) and below the cooling tube (44). A drainage tube is connected to one side of the sealing tube (53), and a sealing component for preventing the air inside the cooling box (42) from being discharged through the drainage tube is connected to one end of the drainage tube.

7. A cooling and shaping device for injection molding of LED lamp bead brackets according to claim 6, characterized in that: The sealing component comprises a sealing tube (53), the input end of the sealing tube (53) is connected to one end of the drainage pipe, the discharge end of the sealing tube (53) is slidably and tightly fitted with a sealing plug (56), the upper end of the sealing plug (56) is fixedly provided with a fixing rod, one end of the fixing rod is fixedly provided with a floating ring (54), the floating ring (54) is slidably arranged inside the sealing tube (53), a fourth fixing plate is slidably arranged on the fixing rod, the fourth fixing plate is fixedly arranged inside the sealing tube (53), and a second return spring (55) is arranged between the upper end of the sealing plug (56) and the bottom end of the fixing plate.

8. A cooling and shaping device for injection molding of LED lamp bead brackets according to claim 7, characterized in that: The diverter joint is provided with an electromagnetic valve (61), the other end of the electromagnetic valve (61) is connected to a delivery pipe, the other end of the delivery pipe is connected to the inside of the outer box (34), the upper end of the inside of the outer box (34) is connected to a return pipe, the other end of the return pipe is connected to the inside of the liquid storage tank (58).

9. A cooling and shaping device for injection molding of LED lamp bead brackets according to claim 1, characterized in that: The exhaust mechanism comprises a second sealed box (40), the second sealed box (40) is fixedly arranged inside the installation box (16), a plurality of installation tubes are arranged at the bottom end of the second sealed box (40), an exhaust fan (62) is arranged in each of the installation tubes, second rotating doors (41) are hingedly arranged at both ends of the second sealed box (40), a first torsion spring is arranged at the connection between the second rotating door (41) and the second sealed box (40), a first rotating door (39) is hingedly arranged at the bottom end of the first sealed box (38), and the first A second torsion spring is provided at the connection between the rotating door (39) and the bottom end of the first sealing box (38); one end of the first rotating door (39) is closely attached to one end of the second rotating door (41); a first roller (31) is symmetrically provided at the upper end of the fixing frame (17); first rollers (30) are rotatably provided at both ends of the first roller (31); first fixing plates (32) are symmetrically provided on both sides of the interior of the installation box (16); the first fixing plates (32) are closely attached to the first rollers (30) at the upper and lower ends of the conveyor belt (11), respectively.

10. A cooling and shaping device for injection molding of LED lamp bead brackets according to claim 1, characterized in that: A second roller is rotatably provided at the bottom end of the push rod (26), the push rod (26) is slidably provided in a mounting hole at the bottom end of the fixing frame (17), a circular plate is fixedly provided at one end of the push rod (26), a first return spring (27) is provided between the circular plate and the bottom end of the fixing frame (17), a guide rod (28) is fixedly provided inside the installation box (16) near one end of the first motor (15), the cross section of the guide rod (28) is an isosceles triangle, and the guide rod (28) is provided at a position corresponding to one end of the push rod (26) at the upper end of the conveyor belt (11).

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