A quantitative feeding device for polyvinyl chloride resin powder

Abstract

The invention discloses a quantitative feeding device for polyvinyl chloride resin powder, comprising a mounting seat, wherein a quantitative conveying device is arranged at the bottom of the mounting seat, and the quantitative conveying device respectively comprises a bottom plate, a first driver, a slide groove, a feed trough, a spiral conveying rod, a discharge port, a guide tube, a conical bayonet, a mounting bin, a first servo motor, a gear, a sleeve column, a sleeve and a rack plate; the invention promotes the conical guide port above the rotating bin to be accurately aligned and engaged with the discharge port of the guide barrel through the lifting and lowering adjustment of the adjustment mechanism and the quantitative receiving device structure, and forms a guide channel of a sealed chamber, so that the resin powder discharged by the guide barrel is fully protected, and the powder is prevented from overflowing and scattering outwards, and at the same time, the overall rotation of the rotating bin is utilized to not only align the conical guide port with the conical bayonet structure, but also discharge and feed the weighed resin powder, and effectively prevent the resin powder from scattering outwards when discharging.

Description

Technical Field

[0001] The invention relates to the technical field of polyvinyl chloride resins, in particular to a quantitative feeding device for polyvinyl chloride resin powder. Background Art

[0002] The main component of polyvinyl chloride resin is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, ductility, etc. It is a synthetic material that is deeply loved, popular and widely used in the world today. The main component of polyvinyl chloride resin is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, ductility, etc.

[0003] The authorized patent number CN213010820U discloses a quantitative feeding device for polyvinyl chloride resin powder. The device mainly weighs the weight through a weighing meter, and then the second electric push rod on the weighing meter contracts to make the hopper rotate around the support rod. At the same time, the first electric push rod on the bracket at the top of the chute body on the hopper drives the slide plate to slide inside the chute body, so that the polyvinyl chloride resin powder enters the feed port on the box body at the top of the base through the leak hole. At the same time, the third electric push rod on the top of the support on the hopper drives the push plate to scrape the material inside the hopper, which facilitates automatic quantitative feeding, saves labor, improves efficiency and facilitates the falling of all materials, thereby facilitating the use of users. However, when the device actually performs the quantitative feeding of polyvinyl chloride resin powder, the following defects still exist:

[0004] The above patent mainly uses a weighing device to weigh and quantify polyvinyl chloride resin powder, so that the specified weight of resin powder is scraped and then loaded for processing. However, when the resin powder is discharged, the polyvinyl chloride resin powder may be blocked and adhered at the discharge port, making it difficult to ensure the normal discharge and feeding of the powder. In addition, the powder is easy to float in the air during discharge, further reducing the efficiency of resin powder loading and weighing. When weighing, the powder is easy to accumulate in one place and cannot be placed flat in the groove, which not only reduces the weighing accuracy, but also makes it difficult to accurately scrape the accumulated polyvinyl chloride resin powder, increasing the limitations of the device for quantitative loading. When too much resin powder is loaded, it is difficult to discharge and recycle the excess material separately, which in turn affects the subsequent loading and weighing work, and increases the difficulty and inconvenience of using the device. Summary of the invention

[0005] The object of the present invention is to provide a quantitative feeding device for polyvinyl chloride resin powder to solve the related problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quantitative feeding device for polyvinyl chloride resin powder, comprising a mounting seat, a quantitative conveying device is arranged at the bottom of the mounting seat, and the quantitative conveying device respectively comprises a bottom plate, a first driver, a slide groove, a feed trough, a spiral conveying rod, a discharge port, a guide pipe, a conical bayonet, a mounting bin, a first servo motor, a gear, a sleeve column, a sleeve and a rack plate, the bottom plate is mounted on the bottom of the mounting seat, two groups of slide grooves are installed on one side of the top of the bottom plate, the inner sides of the two groups of slide grooves are provided with sliding blocks, and the top of the slide block is provided with a feed trough, the interior of the feed trough is respectively provided with two groups of first drivers and spiral conveying rods, and the two groups of first drivers A sealing partition is provided between the device and the spiral conveying rod, two groups of discharge ports are provided at the bottom of one side of the feed trough, a mounting bin is provided on the top of the bottom plate near the feed trough, a first servo motor is provided on one side of the mounting bin, an output end of the first servo motor extends to the interior of the mounting bin and is provided with a gear, sleeves are installed at both ends of the interior of the mounting bin, sleeves are provided on the outer side of the sleeves, the sleeves are fixedly connected to the feed trough, a rack plate meshing with the gear is installed on one side of the sleeves, two groups of guide pipes opposite to the vertical surface of the spiral conveying rod are provided on the top of the feed trough, conical bayonet holes are provided on the tops of the two groups of guide pipes, and the guide pipes and the conical bayonet holes are connected to each other in a hose structure;

[0007] A lifting mechanism is provided at one side and the middle position of the top of the mounting seat, and the lifting mechanism comprises a guide rod, a guide tube, a fixing groove, an internally threaded tube, a screw rod and a second servo motor respectively. The guide rods are in two groups, and the two groups of guide rods are installed on one side of the top of the mounting seat. A fixing groove is installed at the middle position of the top of the mounting seat, and a second servo motor is provided at the bottom of the fixing groove. A screw rod is provided at the output end of the second servo motor, and an internally threaded tube with threaded adaptation is sleeved on the outer side of the screw rod, and a sliding guide tube is provided on the outer side of the two groups of guide rods;

[0008] An adjusting mechanism is provided on one side of the internally threaded tube, and the adjusting mechanism comprises a mounting frame, a cam, a second driver, a mounting plate, a guide rod, a spring, a third servo motor and a guide sleeve, respectively; the mounting frame is mounted on one side of the internally threaded tube, the mounting frame is fixedly connected to two groups of guide tubes, a third servo motor is provided on one side of the mounting frame, a mounting plate is sleeved at a middle position between an output end of the third servo motor and one side of an inner side of the mounting frame, guide rods are installed on the inner sides of the two groups of mounting plates, guide sleeves are provided on the outer sides of the two groups of guide rods for sliding fit, springs elastically connected to the mounting plates are provided at both ends of the two groups of guide sleeves, a second driver is provided at one end inside the mounting frame, a cam is provided at the output end of the second driver, and the cam extends to the outside of the mounting frame;

[0009] A quantitative material receiving device is provided between the two groups of guide sleeves, and the quantitative material receiving device respectively includes a rotating bin, a conical material guide port, a third driver, a weighing trough, a weighing device and a scraper. A rotating bin is installed on the side where the two groups of guide sleeves are close to each other, a cam is provided on the top of the rotating bin, a weighing device is provided on the bottom of the rotating bin, a weighing trough for weighing is provided on the top of the weighing device, a third driver is provided on one end of the back side of the rotating bin, and the output end of the third driver extends to the axis of the rotating bin and the weighing trough and is provided with a scraper.

[0010] Preferably, a feeding device is provided on the top of the mounting seat, and the feeding device comprises a material guide cylinder, a feeding pipe, a spiral feeding rod and a fourth driver respectively. The feeding pipe is installed on one side of the top of the mounting seat, the fourth driver is provided at the bottom of the feeding pipe, and a spiral feeding rod is provided at the output end of the fourth driver. The top of the feeding pipe is connected to the material guide cylinder.

[0011] Preferably, a quantitative device is provided on one side of one end of the mounting frame, and the quantitative device comprises a mounting groove, an internal threaded sleeve block, a threaded rod, a scale plate and an infrared detector respectively. The mounting groove is installed on one side of one end of the mounting frame, a scale plate is provided on one side of the mounting groove at one end of the mounting frame, a threaded rod is sleeved on the bottom of the mounting groove, an internal threaded sleeve block with thread matching is provided on the outer side of the threaded rod, and an infrared detector is provided on one side of the internal threaded sleeve block.

[0012] Preferably, a through slot opposite to the vertical surface of the rotating bin is formed on the top of the mounting seat, and the material delivery trough and the two sets of material guide pipes and the conical bayonet move horizontally inside the through slot.

[0013] Preferably, a limit groove is provided on one side inside the fixing groove and the installation groove, and a limit block is provided on the inner side of the limit groove, and the limit block is respectively connected to the internal threaded tube and the internal threaded sleeve block, and a through opening is opened on one side of the fixing groove and the installation groove, and the internal threaded tube and the internal threaded sleeve block extend out of the through opening and are installed with a mounting frame and an infrared detector.

[0014] Preferably, arc-shaped guide plates are provided at both ends of the rotating bin, the cam is in contact with the arc-shaped guide plates, the rotating bin is rotatably engaged on the inner side of the mounting frame, and the rotating bin and the weighing slot are both transparent structures.

[0015] Preferably, a cleaning brush is provided at the end of the scraper, and the scraper is in contact with the inner wall of the weighing tank.

[0016] Preferably, a feeding port is provided on one side of the feeding pipe, and a sealing plate is provided on the outer side of the feeding port, and the feeding pipe is connected to the fixing groove.

[0017] Preferably, an electric gate valve is provided on the top of the material guide cylinder, and a conical discharge pipe is connected to the end of the bottom of the material guide cylinder, and the conical discharge pipe is snap-fitted with the conical material guide port.

[0018] Preferably, a pointer is provided on one side of the infrared detector, and the pointer corresponds to the scale plate, and the infrared emission port of the infrared detector passes through the interior of the rotating bin and corresponds to the weighing slot.

[0019] Compared with the prior art, the present invention provides a quantitative feeding device for polyvinyl chloride resin powder, which has the following beneficial effects:

[0020] 1. The present invention uses the lifting and lowering adjustment of the adjustment mechanism and the quantitative receiving device structure to enable the tapered guide port above the rotating bin to be accurately aligned and engaged with the discharge port of the guide barrel, and form a guide channel in the sealed chamber, so that the resin powder discharged by the guide barrel is fully protected to prevent the powder from overflowing and scattering outwards. At the same time, the overall rotation of the rotating bin is utilized to not only align the tapered guide port with the tapered bayonet structure, but also discharge and feed the weighed resin powder, effectively preventing the resin powder from scattering outwards during discharge, and the second driver arranged on the inner side of the mounting frame and the structural cooperation of the cam can be utilized to form a vibration structure to actively impact the rotating bin, so that the powder of the guide barrel, the tapered guide port and the tapered bayonet guide structure can be vibrated and discharged, thereby preventing the resin powder from adhering and clogging at the discharge port, and effectively improving the stability and efficiency of the loading, unloading and feeding work of the overall structure.

[0021] 2. The present invention utilizes a weighing device arranged below the quantitative material receiving device and an infrared scanning structure formed by the quantitative device, so that the polyvinyl chloride resin powder carried in the weighing trough can be weighed by the weighing device, and the resin powder can be flattened in cooperation with the vibration of the rotating bin as a whole, thereby increasing the weighing accuracy of the weighing device, and quantitatively loading the resin powder. At the same time, the infrared detector is forced to perform infrared scanning with the resin powder at a specified height, thereby forming a secondary quantitative effect, greatly improving the accuracy of resin powder loading, and in cooperation with the annular scraping brush structure of the scraper on the inner side of the weighing trough, the quantitative resin powder is discharged from the conical material guide port, and the surface powder adheres to the inner wall of the weighing trough, thereby increasing the functionality and practicality of the device for quantitative loading.

[0022] 3. The present invention adjusts the level of the feed trough so that the feed structure and the guide pipe formed by the two groups of spiral conveying rods inside the feed trough and the tapered bayonet are adjusted correspondingly to the vertical surface of the rotating bin, so that the quantitative resin powder can be discharged from a group of discharge ports for conveying processing, or the excess resin powder can be discharged from the discharge ports alone for recycling. There is no need to manually clean the excess resin powder, which greatly improves the intelligence and automation efficiency of the actual use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 is a first front cross-sectional view of the present invention;

[0025] Figure 3 is a second cross-sectional view of the present invention;

[0026] Figure 4 For the present invention Figure 2 A magnified image of point A;

[0027] Figure 5 For the present invention Figure 3 A magnified view of point B;

[0028] Figure 6 A top sectional view of the installation frame of the present invention;

[0029] Figure 7 It is an enlarged cross-sectional view of the installation frame of the present invention;

[0030] Figure 8 It is a three-dimensional diagram of the rotary bin of the present invention.

[0031] In the figure: 1. mounting base; 2. quantitative conveying device; 21. bottom plate; 22. first driver; 23. slideway; 24. feeding trough; 25. screw conveying rod; 26. discharge port; 27. guide pipe; 28. conical bayonet; 29. ​​mounting bin; 210. first servo motor; 211. gear; 212. sleeve column; 213. sleeve; 214. rack plate; 3. lifting mechanism; 31. guide rod; 32. guide pipe; 33. fixing groove; 34. internal threaded pipe; 35. screw rod; 36. second servo motor; 4. adjustment mechanism; 41. mounting frame ; 42. Cam; 43. Second driver; 44. Mounting plate; 45. Guide rod; 46. Spring; 47. Third servo motor; 48. Guide sleeve; 5. Quantitative material receiving device; 51. Rotating bin; 52. Conical material guide port; 53. Third driver; 54. Weighing trough; 55. Weighing device; 56. Scraper; 6. Feeding device; 61. Guide barrel; 62. Feeding tube; 63. Screw feeding rod; 64. Fourth driver; 7. Quantitative device; 71. Mounting groove; 72. Internal thread sleeve block; 73. Threaded rod; 74. Scale plate; 75. Infrared detector. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-8 The present invention provides a technical solution: a quantitative feeding device for polyvinyl chloride resin powder, comprising a mounting seat 1, a quantitative conveying device 2 is arranged at the bottom of the mounting seat 1, and the quantitative conveying device 2 comprises a bottom plate 21, a first driver 22, a chute 23, a feed trough 24, a spiral conveying rod 25, a discharge port 26, a guide pipe 27, a conical bayonet 28, a mounting bin 29, a first servo motor 210, a gear 211, a sleeve 212, a sleeve 213 and a rack plate 214, the bottom plate 21 is mounted on the bottom of the mounting seat 1, two groups of chute 23 are installed on one side of the top of the bottom plate 21, a sliding block for sliding fit is arranged on the inner side of the two groups of chute 23, and a feed trough 24 is installed on the top of the sliding block, and two groups of first drivers 22 and a spiral conveying rod 25 are arranged inside the feed trough 24, and the two groups of first drivers 22 and the spiral conveying rod 25 are arranged, and the two groups of first drivers 22 and the spiral conveying rod 25 are arranged inside the feed trough 24. A sealing partition is provided between the spiral conveying rods 25, two groups of discharge ports 26 are provided at the bottom of one side of the feed trough 24, a mounting chamber 29 is provided on the top of the bottom plate 21 near the feed trough 24, a first servo motor 210 is provided on one side of the mounting chamber 29, an output end of the first servo motor 210 extends to the inside of the mounting chamber 29 and is provided with a gear 211, sleeves 212 are provided at both ends of the inside of the mounting chamber 29, sleeves 213 are provided on the outer side of the sleeves 212, the sleeves 213 are fixedly connected to the feed trough 24, a rack plate 214 meshing with the gear 211 is provided on one side of the sleeves 213, two groups of guide pipes 27 opposite to the vertical plane of the spiral conveying rods 25 are provided on the top of the feed trough 24, a conical bayonet 28 is provided on the top of the two groups of guide pipes 27, and the guide pipes 27 and the conical bayonet 28 are connected to each other in a hose structure;

[0034] A lifting mechanism 3 is provided at one side and the middle position of the top of the mounting seat 1. The lifting mechanism 3 comprises a guide rod 31, a guide tube 32, a fixing groove 33, an internally threaded tube 34, a screw rod 35 and a second servo motor 36. The guide rod 31 is divided into two groups. The two groups of guide rods 31 are installed at one side of the top of the mounting seat 1. A fixing groove 33 is installed at the middle position of the top of the mounting seat 1. A second servo motor 36 is provided at the bottom of the fixing groove 33. A screw rod 35 is provided at the output end of the second servo motor 36. The outer side of the screw rod 35 is sleeved with a thread-matching internally threaded tube 34. The outer sides of the two groups of guide rods 31 are provided with a slidingly matched guide tube 32.

[0035] An adjusting mechanism 4 is provided on one side of the internal threaded tube 34, and the adjusting mechanism 4 comprises a mounting frame 41, a cam 42, a second driver 43, a mounting plate 44, a guide rod 45, a spring 46, a third servo motor 47 and a guide sleeve 48. The mounting frame 41 is installed on one side of the internal threaded tube 34, and the mounting frame 41 is fixedly connected to the two groups of guide tubes 32. A third servo motor 47 is provided on one side of the mounting frame 41, and a mounting plate 44 is sleeved at the output end of the third servo motor 47 and the middle position of one side of the inner side of the mounting frame 41. Guide rods 45 are installed on the inner sides of the two groups of mounting plates 44, and guide sleeves 48 with sliding fit are provided on the outer sides of the two groups of guide rods 45. Springs 46 elastically connected to the mounting plate 44 are provided at both ends of the two groups of guide sleeves 48. A second driver 43 is provided at one end inside the mounting frame 41, and a cam 42 is provided at the output end of the second driver 43, and the cam 42 extends to the outside of the mounting frame 41.

[0036] A quantitative material receiving device 5 is provided between the two groups of guide sleeves 48, and the quantitative material receiving device 5 includes a rotating bin 51, a conical material guide port 52, a third driver 53, a weighing slot 54, a weighing device 55 and a scraper 56. The rotating bin 51 is installed on the side where the two groups of guide sleeves 48 are close to each other, a cam 42 is provided on the top of the rotating bin 51, a weighing device 55 is provided on the bottom of the rotating bin 51, and a weighing slot 54 for weighing is provided on the top of the weighing device 55. A third driver 53 is provided at one end of the back side of the rotating bin 51, and the output end of the third driver 53 extends to the axis inside the rotating bin 51 and the weighing slot 54 and is provided with a scraper 56.

[0037] As a preferred solution of this embodiment: a feeding device 6 is provided on the top of the mounting seat 1, and the feeding device 6 includes a material guide cylinder 61, a feeding pipe 62, a spiral feeding rod 63 and a fourth driver 64. The feeding pipe 62 is installed on one side of the top of the mounting seat 1, and the fourth driver 64 is provided at the bottom of the feeding pipe 62. A spiral feeding rod 63 is provided at the output end of the fourth driver 64, and the top of the feeding pipe 62 is connected to the material guide cylinder 61.

[0038] As a preferred solution of this embodiment: a quantitative device 7 is provided on one side of one end of the mounting frame 41, and the quantitative device 7 includes a mounting groove 71, an internal threaded sleeve block 72, a threaded rod 73, a scale plate 74 and an infrared detector 75. The mounting groove 71 is installed on one side of one end of the mounting frame 41, and a scale plate 74 is provided on one side of the mounting groove 71 at one end of the mounting frame 41. A threaded rod 73 is sleeved on the bottom of the inside of the mounting groove 71, and an internal threaded sleeve block 72 with thread matching is provided on the outer side of the threaded rod 73, and an infrared detector 75 is provided on one side of the internal threaded sleeve block 72.

[0039] As a preferred solution of this embodiment: a through groove opposite to the vertical surface of the rotating bin 51 is opened on the top of the mounting base 1, and the feed trough 24 and two sets of material guide pipes 27 and the conical bayonet 28 move horizontally on the inner side of the through groove, so as to facilitate the horizontal adjustment of the two sets of material guide pipes 27 and the conical bayonet 28, thereby adjusting and conveying the feeding and recovery of the resin powder.

[0040] As a preferred solution of this embodiment: a limiting groove is provided on one side inside the fixing groove 33 and the mounting groove 71, and a limiting block is provided on the inner side of the limiting groove, and the limiting block is respectively connected to the internal threaded tube 34 and the internal threaded sleeve block 72, and a through opening is opened on one side of the fixing groove 33 and the mounting groove 71, and the internal threaded tube 34 and the internal threaded sleeve block 72 extend out of the through opening and are installed with the mounting frame 41 and the infrared detector 75, so that the lifting and adjusting of the mounting frame 41 and the infrared detector 75 that can be adjusted by lifting and adjusting, makes the actual use of the rotating bin 51 more flexible, and facilitates the quantitative detection of the resin powder by the infrared detector 75.

[0041] As a preferred solution of this embodiment: arc-shaped guide plates are provided at both ends of the rotating bin 51, the cam 42 contacts and cooperates with the arc-shaped guide plates, the rotating bin 51 rotates and cooperates on the inner side of the mounting frame 41, and the rotating bin 51 and the weighing slot 54 are both transparent structures, which increases the flexibility of the structure and facilitates the detection of the height of the resin powder through the rotating bin 51 and the weighing slot 54 by the infrared detector 75.

[0042] As a preferred solution of this embodiment: a cleaning brush is provided at the end of the scraper 56, and the scraper 56 contacts and cooperates with the inner wall of the weighing tank 54 to prevent the resin powder from adhering to the inner wall of the structure, thereby improving the material discharge efficiency of the device.

[0043] As a preferred solution of this embodiment: a feed port is provided on one side of the feed pipe 62, and a sealing plate is provided on the outer side of the feed port. The feed pipe 62 is interconnected with the fixing groove 33 to facilitate the feeding of resin powder and seal the feed port.

[0044] As a preferred solution of this embodiment: an electric gate valve is provided on the top of the material guide barrel 61, and a conical discharge pipe is connected to the end of the bottom of the material guide barrel 61, and the conical discharge pipe is snap-fitted with the conical material guide port 52, so as to facilitate the rapid closure of the material guide barrel 61 and avoid the automatic falling of excessive resin powder.

[0045] As a preferred solution of this embodiment: a pointer is provided on one side of the infrared detector 75, and the pointer corresponds to the scale plate 74. The infrared emission port of the infrared detector 75 passes through the interior of the rotating bin 51 and corresponds to the weighing slot 54. The structural coordination of the pointer and the scale plate 74 can improve the accuracy of the height adjustment of the infrared detector 75, and increase the accuracy of the detection of the accumulated resin powder in the weighing slot 54 through the infrared emission port passing through the rotating bin 51.

[0046] Embodiment 1, as Figure 1-4 As shown, when the polyvinyl chloride resin powder is over-filled or the weight is temporarily reduced, the first servo motor 210 can be started to drive the gear 211 to rotate, so that the gear 211 and the rack plate 214 are meshed with each other, so that the rack plate 214 drives the sleeve 213 to move horizontally under the guidance of the sleeve column 212, and then the sleeve 213 drives the feed trough 24 to move horizontally under the guidance of the two sets of sliders and the slide trough 23, and synchronously drives the two sets of guide pipes 27 and the tapered bayonet 28 to move, and adjusts the vertical corresponding surface of one set of tapered bayonet 28 and the tapered guide port 52 so as to adjust the vertical corresponding surface of the tapered bayonet 28 and the tapered guide port 52 according to the requirements. Adjustments are made according to the quantitative feeding conveying or recycling work, so that the resin powder to be recycled enters the conveying channel of one group of spiral conveying rods 25 through the conical bayonet 28 and the guide tube 27, and the spiral conveying rods 25 are driven to rotate by starting the first driver 22 to cause the resin powder to be discharged from the discharge port 26 for recycling, or the resin powder entering the channel at this time is transported and discharged from the discharge port 26 for feeding and subsequent processing operations by starting another group of first drivers 22 and spiral conveying rods 25, thereby increasing the adjustability of the device and the flexibility and convenience of actual use.

[0047] Embodiment 2, as Figure 1-3 and Figure 5 As shown, when the weighing tank 54 is weighed and quantitatively measured by the weighing device 55, the infrared detector 75 can be forced to rise and fall by rotating the threaded rod 73 to drive the internal threaded sleeve 72, so that the infrared detector 75 can be height-adjusted under the guidance of the scale plate 74, and the height of the infrared light emitted by the infrared detector 75 can be quantitatively adjusted, so that the infrared detector 75 can penetrate the rotating bin 51 and the weighing tank 54 to perform infrared scanning and quantitative measurement, so as to cooperate with the weighing structure of the weighing device 55 to form a secondary quantitative effect, greatly improve the accuracy of the resin powder quantitative measurement, avoid large errors in the resin powder quantitative measurement, and increase the accuracy and efficiency of the quantitative feeding of the polyvinyl chloride resin powder.

[0048] Working principle: When the device performs quantitative feeding of polyvinyl chloride resin powder, the resin powder can be poured into the feeding tube 62, and the fourth driver 64 is started to drive the spiral feeding rod 63 to rotate, thereby conveying the resin powder upward and discharging it outward from the guide barrel 61. At this time, the second servo motor 36 is started to drive the screw rod 35 to rotate, so that the internal threaded tube 34 drives the adjustment mechanism 4 and the quantitative receiving device 5 structure as a whole to rise and fall under the limit cooperation of the two groups of guide tubes 32 and the guide rod 31, so that the conical guide port 52 above the rotating bin 51 is engaged with the guide barrel 61, so that the resin powder discharged from the guide barrel 61 can be directly introduced into the rotating bin 51. The resin powder falls into the weighing slot 54. At this time, the resin powder received by the weighing slot 54 can be weighed by the weighing device 55. During this period, the cam 42 is driven to rotate by the start of the second driver 43, so that the cam 42 intermittently hits the outer wall of the rotating bin 51, so that the rotating bin 51 drives the two sets of guide sleeves 48 to move horizontally outside the guide rod 45, and drives the spring 46 to compress and reset elastically, thereby forming a vibration structure that moves back and forth, causing the weighing slot 54 inside the rotating bin 51 to vibrate, so that the concentrated falling resin powder is automatically flattened, and the feeding efficiency between the tapered guide port 52 and the guide channel of the guide cylinder 61 is improved, so as to avoid the resin powder from clogging and adhering to the inner wall of the channel;

[0049] After the weighing work of the resin powder on the weighing device 55 is completed, the feeding of the spiral feeding rod 63 can be stopped, and then the rotation of the third servo motor 47 drives the rotating bin 51 as a whole to rotate on the inner side of the mounting frame 41, so that the end of the conical guide port 52 is downwardly aligned with the vertical surface of the conical bayonet 28, and the overall lifting and lowering adjustment of the adjusting mechanism 4 is coordinated to cause the conical guide port 52 to communicate and engage with one group of conical bayonet 28, and then the vibration structure formed by the second driver 43 and the cam 42 is coordinated to cause the quantitative polyvinyl chloride resin powder to be introduced into the feeding trough 24, and the start of the third driver 53 can drive the scraper 56 to rotate centrifugally on the inner side of the weighing trough 54, so that the scraper 56 continuously contacts the inner wall of the weighing trough 54 and scrapes and cleans it, further improving the falling accuracy of the resin powder, and the subsequent processing operation of the resin powder feeding is carried out by starting a group of first drivers 22 and the spiral conveying rod 25, thereby increasing the accuracy and flexibility of the device feeding work and improving the work efficiency of the resin powder production.

[0050] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A quantitative feeding device for polyvinyl chloride resin powder, comprising a mounting seat (1), characterized in that: A quantitative conveying device (2) is provided at the bottom of the mounting seat (1), and the quantitative conveying device (2) comprises a bottom plate (21), a first driver (22), a slide groove (23), a material conveying trough (24), a spiral conveying rod (25), a material discharge port (26), a material guide pipe (27), a conical bayonet (28), a mounting bin (29), a first servo motor (210), a gear (211), a sleeve column (212), a sleeve (213) and a rack plate (214). The bottom plate (21) is mounted on the bottom of the mounting seat (1), and two groups of slide grooves (23) are mounted on one side of the top of the bottom plate (21). The inner sides of the two groups of slide grooves (23) are provided with sliding blocks that are slidably matched, and a feed trough (24) is mounted on the top of the sliding block. Two groups of first drivers (22) and a screw conveying rod (25) are respectively arranged inside the feed trough (24), and a sealing partition is arranged between the two groups of first drivers (22) and the screw conveying rod (25). The feed trough (24) is provided with a sealing partition between the two groups of first drivers (22) and the screw conveying rod (25). Two groups of discharge ports (26) are provided at the bottom of one side of the bottom plate (24); a mounting chamber (29) is provided at the top of the bottom plate (21) near the feeding trough (24); a first servo motor (210) is provided at one side of the mounting chamber (29); an output end of the first servo motor (210) extends to the inside of the mounting chamber (29) and is provided with a gear (211); sleeves (212) are installed at both ends of the inside of the mounting chamber (29); and the outer side of the sleeves (212) is provided with a A sleeve (213) is provided, the sleeve (213) is fixedly connected to the material conveying trough (24), a rack plate (214) meshing with the gear (211) is installed on one side of the sleeve (213), two groups of material guide pipes (27) vertically opposite to the spiral conveying rod (25) are opened on the top of the material conveying trough (24), and conical bayonet holes (28) are provided on the tops of the two groups of material guide pipes (27), and the material guide pipes (27) and the conical bayonet holes (28) are connected to each other in a hose structure; A lifting mechanism (3) is provided at one side and the middle position of the top of the mounting seat (1), and the lifting mechanism (3) comprises a guide rod (31), a guide tube (32), a fixing groove (33), an internally threaded tube (34), a screw rod (35) and a second servo motor (36). The guide rod (31) is divided into two groups, and the two groups of guide rods (31) are installed at one side of the top of the mounting seat (1). A fixing groove (33) is installed at the middle position of the top of the mounting seat (1). A second servo motor (36) is provided at the bottom of the fixing groove (33). A screw rod (35) is provided at the output end of the second servo motor (36). The outer side of the screw rod (35) is sleeved with a thread-matching internally threaded tube (34). The outer sides of the two groups of guide rods (31) are provided with a slidingly matched guide tube (32). An adjusting mechanism (4) is provided on one side of the internally threaded tube (34), and the adjusting mechanism (4) comprises a mounting frame (41), a cam (42), a second driver (43), a mounting plate (44), a guide rod (45), a spring (46), a third servo motor (47) and a guide sleeve (48). The mounting frame (41) is mounted on one side of the internally threaded tube (34), the mounting frame (41) is fixedly connected to the two groups of guide tubes (32), the mounting frame (41) is provided on one side of the third servo motor (47), and the output of the third servo motor (47) A mounting plate (44) is sleeved at a middle position between the inner side of the mounting plate (41) and the inner side of the mounting plate (41), guide rods (45) are installed on the inner sides of the two groups of mounting plates (44), guide sleeves (48) are slidably matched on the outer sides of the two groups of guide rods (45), springs (46) elastically connected to the mounting plate (44) are provided at both ends of the two groups of guide sleeves (48), a second driver (43) is provided at one end inside the mounting frame (41), a cam (42) is provided at the output end of the second driver (43), and the cam (42) extends to the outside of the mounting frame (41); A quantitative material receiving device (5) is provided between the two groups of guide sleeves (48), and the quantitative material receiving device (5) comprises a rotating bin (51), a conical material guide port (52), a third driver (53), a weighing slot (54), a weighing device (55) and a scraper (56). A rotating bin (51) is installed on the side where the two groups of guide sleeves (48) are close to each other, a cam (42) is provided on the top of the rotating bin (51), a weighing device (55) is provided on the bottom of the rotating bin (51), a weighing slot (54) for weighing is provided on the top of the weighing device (55), a third driver (53) is provided on one end of the back side of the rotating bin (51), and an output end of the third driver (53) extends to the axis of the rotating bin (51) and the weighing slot (54) and is provided with a scraper (56).

2. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: A feeding device (6) is provided at the top of the mounting seat (1), and the feeding device (6) comprises a material guide cylinder (61), a feeding pipe (62), a spiral feeding rod (63) and a fourth driver (64). The feeding pipe (62) is installed on one side of the top of the mounting seat (1), the bottom of the feeding pipe (62) is provided with a fourth driver (64), the output end of the fourth driver (64) is provided with a spiral feeding rod (63), and the top of the feeding pipe (62) is connected to the material guide cylinder (61).

3. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: A quantitative device (7) is provided on one side of one end of the installation frame (41), and the quantitative device (7) comprises a mounting groove (71), an internal thread sleeve (72), a threaded rod (73), a scale plate (74) and an infrared detector (75). The mounting groove (71) is mounted on one side of one end of the installation frame (41), a scale plate (74) is provided on one side of the one end of the installation frame (41) close to the mounting groove (71), a threaded rod (73) is sleeved on the bottom of the mounting groove (71), an internal thread sleeve (72) threadably matched is provided on the outer side of the threaded rod (73), and an infrared detector (75) is provided on one side of the internal thread sleeve (72).

4. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: A through slot opposite to the vertical surface of the rotating bin (51) is formed on the top of the mounting seat (1), and the material delivery trough (24) and two groups of material guide pipes (27) and the conical bayonet (28) move horizontally inside the through slot.

5. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: A limiting groove is provided on one side inside the fixing groove (33) and the mounting groove (71), and a limiting block is provided on the inner side of the limiting groove, and the limiting block is respectively connected to the internal threaded tube (34) and the internal threaded sleeve block (72). A through opening is provided on one side of the fixing groove (33) and the mounting groove (71), and the internal threaded tube (34) and the internal threaded sleeve block (72) extend out of the through opening and are installed with a mounting frame (41) and an infrared detector (75).

6. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: Arc guide plates are provided at both ends of the rotating bin (51), the cam (42) contacts and cooperates with the arc guide plates, the rotating bin (51) rotates and cooperates on the inner side of the mounting frame (41), and the rotating bin (51) and the weighing slot (54) are both transparent structures.

7. A polyvinyl chloride resin powder quantitative feeding device according to claim 1, characterized in that: A cleaning brush is provided at the end of the scraper (56), and the scraper (56) is in contact with the inner wall of the weighing tank (54).

8. A polyvinyl chloride resin powder quantitative feeding device according to claim 2, characterized in that: A feeding port is provided on one side of the feeding pipe (62), and a sealing plate is provided on the outer side of the feeding port. The feeding pipe (62) and the fixing groove (33) are connected to each other.

9. A polyvinyl chloride resin powder quantitative feeding device according to claim 2, characterized in that: An electric gate valve is provided at the top of the material guide cylinder (61), and a conical material discharge pipe is connected to the end of the bottom of the material guide cylinder (61), and the conical material discharge pipe is snap-fitted with the conical material guide port (52).

10. A polyvinyl chloride resin powder quantitative feeding device according to claim 3, characterized in that: A pointer is provided on one side of the infrared detector (75), and the pointer corresponds to the scale plate (74). The infrared emission port of the infrared detector (75) passes through the interior of the rotating bin (51) and corresponds to the weighing slot (54).

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