A plastic lamp housing blank feeding device and feeding method thereof

Abstract

The present invention discloses a plastic lamp housing blank feeding device and a feeding method thereof, wherein the feeding device includes a discharge mechanism, a defective product rejection mechanism, a discharge mechanism, a positioning mechanism and a clamping mechanism which are sequentially mounted on a machine base; the discharge mechanism includes a discharge tray; the discharge tray includes an inclined storage ramp, a discharge portion which surrounds the storage ramp and has a ring-shaped discharge channel on the top surface, and a discharge driving device for driving the storage ramp and the discharge portion to rotate respectively; the side of the storage ramp is connected to the ring-shaped discharge channel and the ring-shaped discharge channel is connected to the discharge mechanism. The discharge tray of the present invention adopts a rotating method to discharge the blank, and the blank will not be vibrated all the time. This method can prevent the blank from being scratched during transportation, has a good protection effect on the product, reduces the probability of the product being scratched, and ensures the quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of lamp housing production, and in particular to a plastic lamp housing blank feeding device and a feeding method thereof. Background Art

[0002] Lighting design is inextricably linked to the development of human civilization. The rapid advancement of modern technology has led to the emergence of new lighting and lamps, making them no longer simply lighting fixtures but more like works of art that illuminate spaces. Furthermore, modern lighting, in addition to generating light through the operation of photoelectric components, also incorporates a lamp housing to provide proper shielding for the components, as well as better light output and advanced projection effects.

[0003] With the continuous development of high-power, low-heat light sources, many lamp housings are being made of plastic, replacing traditional glass. During the production process of these plastic lamp housings, the plastic material is typically injected into an injection molding machine to form a preform. This preform is then placed in a blow molding machine, where gas is introduced into the preform. The gas pressure then inflates the preform, completing the finished plastic lamp housing.

[0004] Among them, a feeding mechanism is generally used in the process of conveying the blank to the blow molding equipment. Authorization announcement number CN203187005U discloses an automatic feeding mechanism for double-ended bulbs, which specifically discloses a vibration discharge mechanism for discharging double-ended bulbs with raised points on the lamp shell, the vibration discharge mechanism is provided with a discharge outlet for discharging the double-ended bulbs; a transport mechanism for transporting the double-ended bulbs, the starting port of the transport mechanism is connected to the discharge outlet of the vibration discharge mechanism; a clamping feeding mechanism for transferring the double-ended bulbs to the next process; a vibration plate with a spiral ascending track provided inside the vibration discharge mechanism, the inner wall of the vibration plate is provided with at least one section of round rod that gradually rises as the track rises, the starting end of the round rod is located at the intersection of the vibration plate and the track, and the height of the end from the upper surface of the track is not less than the thickness from the raised point on the lamp shell of the double-ended bulb to the opposite side.

[0005] Since the above-mentioned automatic feeding mechanism uses a vibration plate to discharge materials during the feeding process, if this type of feeding mechanism is used to feed the preform, it specifically uses vibration to cause the preform to move. However, since the preform is made of plastic and needs to be vibrated all the time during the vibration conveying process, the outer surface of the preform can easily be scratched by frequent friction on the vibration plate, which can easily affect the quality of the product and is not conducive to production. Summary of the Invention

[0006] In response to the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a plastic lamp housing blank loading device and a feeding method thereof, which can realize automatic loading, and adopts a newly designed discharge tray to discharge the blanks instead of using a vibrating tray for conveying, which can reduce the probability of the blanks being scratched during the conveying process and ensure the quality of the product.

[0007] In order to achieve the above object, the technical solution of the present invention is:

[0008] A plastic lamp shell blank loading device includes a discharge mechanism, a defective product rejection mechanism, a discharge mechanism, a positioning mechanism and a clamping mechanism that are sequentially installed on a machine base; the discharge mechanism includes a discharge tray; the discharge tray includes an inclined storage ramp, a discharge portion surrounding the storage ramp and having a ring-shaped discharge channel on the top surface, and a discharge drive device for driving the storage ramp and the discharge portion to rotate respectively; the side of the storage ramp is connected to the annular discharge channel and the annular discharge channel is connected to the discharge mechanism; the blank on the storage ramp can be input into the annular discharge channel during the rotation of the storage ramp and the defective product rejection mechanism can be used to reject the product with the wrong direction, and then the blank is transported to the positioning mechanism through the discharge mechanism, and the clamping mechanism can be used to clamp the blank on the positioning mechanism.

[0009] The additional structure of the above technical solution also includes the following solutions:

[0010] Furthermore, it also includes a feeding mechanism for feeding the preforms onto the storage inclined plate.

[0011] Furthermore, it also includes a product quantity detection mechanism; the product quantity detection mechanism includes a fixed seat fixed above the storage inclined plate, a rocker arm with an upper end hinged to one side of the fixed seat and a lower end close to the storage inclined plate, and a sensor installed on the fixed seat and used to detect the swing data of the rocker arm; the rocker arm is used to collide with the rough blank on the storage inclined plate to achieve outward swing; when the sensor senses that the number of swings of the rocker arm per unit time is less than a preset value, the feeding mechanism starts and automatically feeds the rough blank onto the storage inclined plate; when the sensor senses that the number of swings of the rocker arm per unit time is equal to or greater than a preset value, the feeding mechanism stops.

[0012] Furthermore, the feeding mechanism includes a conveyor belt driven by a feeding motor and a conveying baffle arranged on the outer sides of the conveyor belt.

[0013] Furthermore, the defective product rejection mechanism includes a visual camera facing the annular discharge channel and an air pipe located outside the annular discharge channel and capable of blowing air toward the material storage inclined plate; the detection area of the visual camera and the blowing area of the air pipe are both located in front of the entrance of the discharge mechanism.

[0014] Furthermore, the discharge mechanism includes a discharge pipe, a discharge cylinder, a plug and a blocking plate; the feed end of the discharge pipe is connected to the annular discharge channel and is used to input the preliminary blank, and the discharge end is used to connect the positioning mechanism and to discharge the preliminary blank; the plug and the blocking plate are respectively installed on the output shaft of the discharge cylinder; the blocking plate can be used to cover the outlet of the discharge pipe and a discharge through hole corresponding to the outlet of the discharge pipe is provided on the blocking plate; a through hole is provided on the side of the discharge end of the discharge pipe; the discharge cylinder can drive the plug to engage or disengage with the through hole and drive the discharge through hole to align or misalign with the outlet of the discharge pipe to control the discharge of the preliminary blank.

[0015] Furthermore, the positioning mechanism includes a first linear module fixed on the machine base, a slide located correspondingly outside the outlet of the discharge mechanism and horizontally movably installed on the slider of the first linear module, and a plurality of positioning rods fixed on the slide and used for the preform to be sleeved.

[0016] Furthermore, the clamping mechanism includes a second linear module fixed on the machine base, a clamping cylinder horizontally movably mounted on a slider of the second linear module, and a finger cylinder vertically movably connected to an output shaft of the clamping cylinder and used to clamp the blank.

[0017] Furthermore, the discharging drive device includes a first discharging motor for driving the storage inclined plate to rotate and a second discharging motor for driving the discharging part to rotate.

[0018] The present invention also provides a feeding method for a plastic lamp housing blank feeding device, which uses the above-mentioned plastic lamp housing blank feeding device and includes the following steps:

[0019] During the rotation of the storage inclined plate, the rough blank on the storage inclined plate is driven to rotate synchronously, and the rocker arm collides with the rough blank to swing outward; when the sensor senses that the number of swings of the rocker arm per unit time is less than a preset value, the feeding mechanism starts and automatically feeds the rough blank onto the storage inclined plate; when the sensor senses that the number of swings of the rocker arm per unit time is equal to or greater than a preset value, the feeding mechanism stops.

[0020] The beneficial effects of the present invention are:

[0021] (1) The present invention can realize automatic product loading through the mutually coordinated discharging mechanism, defective product removal mechanism, discharge mechanism, positioning mechanism and clamping mechanism, thereby improving production efficiency. At the same time, by setting the discharging tray to include a storage inclined plate that can rotate tiltably and a discharging part provided with an annular discharging channel, when the discharging tray is started, the storage inclined plate can drive the blank into the annular discharging channel during the rotation process, and then the rotating discharging part will input it into the discharge mechanism. Therefore, the discharging tray of the present invention adopts a rotating method to discharge the blank, and there will be no situation where the blank is vibrated all the time. This method can make the blank less likely to be scratched during the transportation process, has a good protection effect on the product, reduces the probability of the product being scratched, and ensures the quality of the product. It is different from the method of using a vibrating tray for transportation in the prior art.

[0022] (2) The present invention sets up a feeding mechanism and a product quantity detection mechanism that cooperate with each other, so that the product quantity detection mechanism can control the start and stop of the conveyor belt by detecting the swing data of the rocker arm in unit time, so as to facilitate the automatic transportation of the blanks, and also avoid the accumulation of too many blanks on the storage ramp, that is, it can conveniently control the number of products on the storage ramp to prevent frequent collisions between a large number of blanks during rotation and cause scratches. In addition, this design also allows workers to only place a large number of blanks on the feeding mechanism in advance, and there is no need to pay attention to the number of blanks on the discharge tray at any time, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the local structure of the present invention Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the local structure of the present invention Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the local structure of the present invention Figure 3 ;

[0028] Figure 6 This is a schematic diagram of the local structure of the present invention Figure 4 .

[0029] Reference numerals:

[0030] 1. Machine base; 2. Discharge mechanism; 21. Discharge tray; 211. Storage ramp; 212. Annular discharge channel; 213. Discharge section; 214. Highest point of storage ramp; 215. Discharge baffle; 3. Defective product removal mechanism; 31. Visual camera; 32. Air pipe; 4. Discharge mechanism; 41. Discharge pipe; 42. Discharge cylinder; 43. Plug; 44. Plug; 45. Perforation; 46. Discharge through hole; 47. Perforation; 5. Positioning mechanism; 51. First linear module; 52. Slide; 53. Positioning rod; 6. Clamping mechanism; 61. Second linear module; 62. Clamping cylinder; 63. Finger cylinder; 7. Feeding mechanism; 71. Conveyor belt; 72. Conveying baffle; 8. Product quantity detection mechanism; 81. Fixed seat; 82. Rocker arm; 83. Sensor. DETAILED DESCRIPTION

[0031] The following describes in detail the specific implementation methods according to the present disclosure in conjunction with the accompanying drawings.

[0032] Example 1:

[0033] like Figures 1-6 As shown, a plastic lamp housing blank feeding device includes a discharge mechanism 2, a defective product rejection mechanism 3, a discharge mechanism 4, a positioning mechanism 5 and a clamping mechanism 6 which are sequentially mounted on a machine base 1; the discharge mechanism 2 includes a discharge tray 21; the discharge tray 21 includes an inclined storage ramp 211, a discharge portion 213 surrounding the storage ramp 211 and having an annular discharge channel 212 on the top surface, and a discharge driving device for driving the storage ramp 211 and the discharge portion 213 to rotate respectively; the side of the storage ramp 211 is connected to the annular discharge channel 212, and the annular discharge channel 212 is connected to the discharge mechanism 4, Specifically, the highest point 214 of the storage ramp is connected to the annular discharge channel 212. In addition, the annular discharge channel 212 is horizontally arranged relative to the storage ramp 211. The width of the annular discharge channel 212 is slightly larger than the width of a preform 9, so that the preforms 9 can be arranged in sequence; the preforms 9 on the storage ramp 211 can be input into the annular discharge channel 212 during the rotation of the storage ramp 211 and the products with the wrong direction can be rejected by the defective product rejection mechanism 3. Then the preforms 9 are transported to the positioning mechanism 5 through the discharge mechanism 4, and the clamping mechanism 6 can be used to clamp the preforms 9 on the positioning mechanism 5.

[0034] Regarding the inclination angle setting of the material storage inclined plate 211, it can be inclined at about 45°. Of course, its specific inclination angle can be set according to actual needs.

[0035] like Figure 1 As shown, a feeding mechanism 7 is also included for feeding the preforms 9 onto the storage inclined plate 211, so that the preforms 9 can be easily and automatically transported without manual transportation.

[0036] like Figure 3 As shown, it also includes a product quantity detection mechanism 8; the product quantity detection mechanism 8 includes a fixed seat 81 fixed above the storage inclined plate 211, a rocker arm 82 whose upper end is hinged to one side of the fixed seat 81 and whose lower end is close to the storage inclined plate 211, and a sensor 83 installed on the fixed seat 81 and used to detect the swing data of the rocker arm 82; the rocker arm 82 is used to collide with the preform on the storage inclined plate 211 to achieve outward swing; when the sensor 83 senses that the number of swings of the rocker arm in unit time is less than a preset value, the feeding mechanism 7 starts and automatically feeds the preform onto the storage inclined plate 211; when the sensor 83 senses that the number of swings of the rocker arm 82 in unit time is equal to or greater than the preset value, the feeding mechanism 7 stops. Therefore, by setting up the product quantity detection mechanism 8, the input of the blanks 9 can be automated. When the number of blanks 9 on the storage ramp 211 is small, the feeding mechanism 7 starts and adds blanks 9 to the storage ramp 211. When the number of storage ramps 211 increases to a preset range, the feeding mechanism 7 stops the input of the blanks 9, thereby avoiding accumulation caused by excessive number of blanks 9 on the storage ramp 211, and preventing large-scale friction between multiple blanks 9, which may cause the appearance of the blanks 9 to be scratched.

[0037] In this embodiment, the sensor 83 may be a fiber optic displacement sensor. Of course, those skilled in the art will appreciate that other sensors may be used as long as they are able to accurately detect the swing data of the swing rod 82 during use.

[0038] A hanging rod (not shown) is installed on a sidewall of the fixed base 81, and the upper end of the swing rod 82 is hinged with the hanging rod. For the setting direction of the swing rod 82, it is specifically provided with according to the rotation direction of the storage inclined plate 211.

[0039] like Figure 3 As shown, the feeding mechanism 7 includes a conveyor belt 71 driven by a feeding motor and conveying baffles 72 arranged on the outer sides of the conveyor belt 71. Specifically, the discharge port of the conveyor belt 71 is directly opposite the lowest point area of the storage ramp 211, that is, the discharge port is located above the lowest point area of the storage ramp 211. This allows the preforms 9 discharged by the conveyor belt 71 to directly land on the lowest point area of the storage ramp 211, thereby preventing the preforms 9 from sliding downward after landing on the high point area and causing scratches. It also allows the preforms 9 to more easily enter the annular discharge channel 212 during the rotation of the storage ramp 211.

[0040] In this embodiment, in order to better protect the blank 9 and reduce the probability of it being scratched, the storage ramp 211 is made of plastic, especially plastic with a certain degree of softness. Of course, the discharge portion 213 can also be made of plastic.

[0041] like Figure 4 As shown, in order to prevent the preforms 9 on the annular discharge channel 212 from falling off during the movement, a circle of discharge baffles 215 higher than the annular discharge channel 212 is provided on the outer sides of the annular discharge channel 212 .

[0042] like Figure 3 As shown, the defective product rejection mechanism 3 includes a visual camera 31 facing the annular discharge channel 212 and an air pipe 32 located outside the annular discharge channel 212 and capable of blowing air toward the storage ramp 211. Of course, the air pipe 32 is connected to an air supply device. The detection area of the visual camera 31 and the blowing area of the air pipe 32 are both located in front of the entrance of the discharge mechanism 4, so that the visual camera 31 can conveniently perform visual inspection on the preform 9 entering the discharge mechanism 4. For example, if the entry direction of the preform 9 is correct, such as the opening of the preform 9 is directed toward the discharge mechanism 4, the air pipe 32 does not need to be operated. If the entry direction of the preform 9 is incorrect, such as the opening of the preform 9 is directed away from the discharge mechanism 4, the air pipe 32 is operated and uses the gas to blow the preform 9 with the wrong direction back onto the storage ramp 211.

[0043] like Figure 3-Figure 6As shown, the discharge mechanism 4 includes a discharge pipe 41, a discharge cylinder 42, a plug 43 and a plugging plate 44; the feed end of the discharge pipe 41 is connected to the annular discharge channel 212 and is used to input the preliminary blank 9, and the discharge end is used to connect the positioning mechanism 5 and is used to discharge the preliminary blank 9. Specifically, the discharge pipe 41 is extended downward in an arc shape, the upper end is the feed end and is placed on the annular discharge channel 212, and the lower end is the discharge end; the plug 43 and the plugging plate 44 are respectively installed on the output shaft of the discharge cylinder 42; the plugging plate 44 can be used to cover the outlet of the discharge pipe 41 and a discharge through hole 46 corresponding to the outlet of the discharge pipe 41 is provided on the plugging plate 44; a through hole 47 is provided on the side of the discharge end of the discharge pipe 41; the discharge cylinder 42 can drive the plug 43 to engage or disengage with the through hole 47 and drive the discharge through hole 46 to align or misalign with the outlet of the discharge pipe 41 to control the discharge of the preliminary blank 9. The above arrangement allows the preform 9 to enter the discharge mechanism 4 from the discharge tube 41, and the discharge cylinder 42 controls the movement of the plug 43 and the blocking plate 44, thereby controlling the discharge of the preform 9. Specifically, when the output shaft of the discharge cylinder 42 contracts, the plug 43 and the blocking plate 44 are controlled to move synchronously, causing the plug 43 to disengage from the perforation 47. At this point, the discharge hole 46 is aligned with the outlet of the discharge tube 41, allowing one preform 9 to be discharged onto the positioning mechanism 5. The discharge cylinder 42 then returns to its original position, preventing the discharge of a second preform 9.

[0044] Of course, the discharge pipe 41 is arranged in the discharge baffle 215.

[0045] like Figure 1 and Figure 6 As shown, the positioning mechanism 5 includes a first linear module 51 fixed on the machine base 1, a slide 52 correspondingly located outside the outlet of the discharge mechanism 4 and horizontally movably installed on the slider of the first linear module 51, and a plurality of positioning rods 53 fixed on the slide 52 and used for the preform 9 to be sleeved and arranged in sequence. In this embodiment, the positioning rod 53 is provided with four positioning rods 53 arranged in sequence. Therefore, after the four positioning rods 53 are set, the discharge mechanism 4 releases a blank 9 each time and puts it on a positioning rod 53. The first linear module 51 is required to drive the slide 52 to move the positioning rod 53 a certain distance and align the second positioning rod 53 with the outlet of the discharge tube 41. Then the discharge mechanism 4 releases the second blank 9 onto the second positioning rod 53, and so on, until the four positioning rods 53 are equipped with blanks 9, the clamping mechanism 6 clamps the blanks 9 on the positioning rods 53 at the same time, and finally the first linear module 51 drives the positioning rods 53 to reset, and then a new round of discharge is carried out.

[0046] like Figure 1 and Figure 6As shown, to facilitate gripping of the preform 9, the gripping mechanism 6 includes a second linear module 61 fixed to the machine base 1, a gripping cylinder 62 mounted horizontally on the slider of the second linear module 61, and a finger cylinder 63 connected vertically to the output shaft of the gripping cylinder 62 for gripping the preform 9. In this embodiment, since four positioning rods 53 are provided, four finger cylinders 63 are also provided. During operation, the gripping cylinder 62 drives the finger cylinder 63 to move vertically, while the second linear module 61 drives the gripping cylinder 62 horizontally, simultaneously driving the finger cylinder 63 to move horizontally. Therefore, after the finger cylinder 63 grips the preform 9, the second linear module 61 and the gripping cylinder 62 drive the finger cylinder 63 to perform corresponding movements, thereby conveying the preform 9 to the next process step. In addition, the slider of the second linear module 61 can be fixed, and the main body of the second linear module 61 is connected to the clamping cylinder 62. In this way, the main body of the second linear module 61 can be moved relative to the slider, and the main body of the second linear module 61 can drive the finger cylinder 63 to move when moving.

[0047] Regarding the movement directions of the first linear module 51 and the second linear module 61 , the sliding movement direction of the first linear module 51 is perpendicular to the movement direction of the slider of the second linear module 61 .

[0048] In this embodiment, the discharge drive device includes a first discharge motor (not shown in the figure) for driving the storage ramp 211 to rotate and a second discharge motor (not shown in the figure) for driving the discharge portion 213 to rotate, that is, the storage ramp 211 and the discharge portion 213 are both driven by motors. The connection method of the two motors to the storage ramp 211 and the discharge portion 213 respectively can be directly connected or connected by a gear set. The specific details are not repeated here. The above design only needs to ensure that the two motors can drive the storage ramp 211 and the discharge portion 213 to rotate respectively. In addition, the rotation speed of the storage ramp 211 and the discharge portion 213 can be set according to actual conditions.

[0049] The specific operating principle of the present invention is introduced below to facilitate understanding of the present invention:

[0050] First, some lamp housing blanks are placed at the rear end of the conveyor belt 71. After the device is activated, the first discharge motor drives the accumulator ramp 211 to rotate at a constant angle, while the second discharge motor drives the discharge section 213 to rotate synchronously. At this point, since no blanks 9 are being fed onto the accumulator ramp 211, the rocker 82 is not impacted and therefore does not swing. Sensor 83 detects that the rocker 82 has not swung within a certain timeframe, and the control center activates the conveyor belt 71 to feed the blanks 9 to the lowest point of the accumulator ramp 211. Since the accumulator ramp 211 is constantly rotating, centrifugal force is used to push the outermost blanks 9 onto the annular discharge channel 212. Simultaneously, when the number of blanks 9 on the accumulator ramp 211 reaches a certain level, the number of collisions between the blanks 9 and the rocker 82 increases. When sensor 83 detects that the rocker 82 has swung a predetermined number of times, the control center stops the conveyor belt 71, effectively preventing the feeding of blanks 9. Before the blanks 9 on the annular discharge channel 212 enter the discharge pipe 41, the visual camera 31 compares and analyzes the photos taken by the control center to determine whether the direction of the blanks 9 is correct. The blanks 9 with incorrect directions are blown back to the storage inclined plate 211 by the air pipe 9, while the blanks 9 with correct directions enter the discharge pipe 41 in turn.

[0051] When the output shaft of the discharge cylinder 42 retracts, the plug 43 and the blocking plate 44 are controlled to open the discharge tube 41, allowing a preform 9 to be placed on the first positioning rod 53 below. The discharge cylinder 42 then returns to its original position, blocking the discharge tube 41 and preventing the preform 9 from being released. The first linear module 51 then drives the slide 52, moving the second positioning rod 53 below the discharge tube 41. The discharge cylinder 42 is then activated again, releasing a second preform 9 and placing it on the second positioning rod 53. The discharge cylinder 42 then returns to its original position. This process of the discharge cylinder 42 and the first linear module 51 is repeated until all four positioning rods 53 are fitted with a preform 9. Finally, the second linear module 61 and the gripping cylinder 62 drive the four finger cylinders 63 to grip the preforms 9 on the four positioning rods 53 and move them to the next process step.

[0052] Example 2:

[0053] The present invention also provides a feeding method for a plastic lamp housing blank feeding device, which uses the above-mentioned plastic lamp housing blank feeding device and includes the following steps:

[0054] During the rotation of the storage inclined plate 211, the blank 9 on the storage inclined plate 211 is driven to rotate synchronously, and the rocker arm 82 collides with the blank 9 to swing outward; when the sensor 83 senses that the number of swings of the rocker arm 82 per unit time is less than the preset value, the feeding mechanism 7 starts and automatically feeds the blank 9 onto the storage inclined plate 211; when the sensor 83 senses that the number of swings of the rocker arm 82 per unit time is equal to or greater than the preset value, the feeding mechanism 7 stops.

[0055] The scope of the present disclosure is not limited by the above-described embodiments but by the appended claims and their equivalents.

Claims

1. A plastic lamp housing blank feeding device, characterized by: It includes a discharge mechanism, a defective product rejection mechanism, a discharge mechanism, a positioning mechanism and a clamping mechanism which are sequentially installed on the machine base; The discharge mechanism includes a discharge tray; the discharge tray includes an inclined storage ramp, a discharge portion surrounding the storage ramp and having an annular discharge channel on the top surface, and a discharge drive device for driving the storage ramp and the discharge portion to rotate respectively; the side of the storage ramp is connected to the annular discharge channel, and the annular discharge channel is connected to the discharge mechanism; The blanks on the storage ramp can be fed into the annular discharge channel during the rotation of the storage ramp, and the blanks with wrong directions can be rejected by the defective rejecting mechanism. Then, the blanks are conveyed to the positioning mechanism by the discharge mechanism, and the clamping mechanism can be used to clamp the blanks on the positioning mechanism. It also includes a feeding mechanism for feeding the preforms onto the storage inclined plate; The product quantity detection mechanism includes a fixed seat fixed above the material storage inclined plate, a swing arm with an upper end hinged to one side of the fixed seat and a lower end close to the material storage inclined plate, and a sensor mounted on the fixed seat and used to detect the swing data of the swing arm; the swing arm is used to collide with the preform on the material storage inclined plate to achieve outward swinging; When the sensor senses that the number of swings of the swing rod in a unit time is less than a preset value, the feeding mechanism starts and automatically feeds the preforms onto the storage ramp; when the sensor senses that the number of swings of the swing rod in a unit time is equal to or greater than the preset value, the feeding mechanism stops; The defective product rejection mechanism includes a visual camera facing the annular discharge channel and an air pipe located outside the annular discharge channel and capable of blowing air toward the material storage inclined plate; the detection area of the visual camera and the blowing area of the air pipe are both located in front of the entrance of the discharge mechanism.

2. The plastic lamp housing blank feeding device according to claim 1, characterized in that: The feeding mechanism includes a conveyor belt driven by a feeding motor and a conveying baffle arranged on the outer sides of the conveyor belt.

3. The plastic lamp housing blank feeding device according to claim 1, characterized in that: The discharge mechanism includes a discharge pipe, a discharge cylinder, a plug and a blocking plate; the feed end of the discharge pipe is connected to the annular discharge channel and is used to input the preliminary blank, and the discharge end is used to connect the positioning mechanism and to discharge the preliminary blank; the plug and the blocking plate are respectively installed on the output shaft of the discharge cylinder; the blocking plate can be used to cover the outlet of the discharge pipe and a discharge through hole corresponding to the outlet of the discharge pipe is provided on the blocking plate; a through hole is provided on the side of the discharge end of the discharge pipe; the discharge cylinder can drive the plug to engage or disengage with the through hole and drive the discharge through hole to align or misalign with the outlet of the discharge pipe to control the discharge of the preliminary blank.

4. The plastic lamp housing blank feeding device according to claim 1, characterized in that: The positioning mechanism includes a first linear module fixed on the machine base, a slide located outside the outlet of the discharge mechanism and horizontally movably mounted on the slider of the first linear module, and several positioning rods fixed on the slide and used for the preform to be sleeved.

5. The plastic lamp housing blank feeding device according to claim 1, characterized in that: The clamping mechanism includes a second linear module fixed on the machine base, a clamping cylinder horizontally movably mounted on a slider of the second linear module, and a finger cylinder vertically movably connected to an output shaft of the clamping cylinder and used for clamping the blank.

6. The plastic lamp housing blank feeding device according to claim 1, characterized in that: The discharging drive device includes a first discharging motor for driving the storage inclined plate to rotate and a second discharging motor for driving the discharging part to rotate.

7. A feeding method for a plastic lamp housing blank feeding device, characterized in that: The plastic lamp housing blank feeding device according to any one of claims 1 to 6 comprises the following steps: During the rotation of the storage inclined plate, the blank on the storage inclined plate is driven to rotate synchronously, and the swing rod collides with the blank to swing outward; When the sensor senses that the number of swings of the rocker arm in unit time is less than a preset value, the feeding mechanism starts and automatically feeds the blank into the storage inclined plate; when the sensor senses that the number of swings of the rocker arm in unit time is equal to or greater than the preset value, the feeding mechanism stops.

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