Extruder applied to powder coating production

Abstract

The utility model relates to the technical field of extruders, and discloses an extruder applied to powder coating production, which comprises an extruder main body, and two compression rollers are rotatably arranged in the extruder main body; the rotating shaft is fixedly arranged on one side of the pressing roller; the two scraping plates are arranged in the extruder main body in a sliding manner, are respectively positioned on two sides of the pressing rollers, and are respectively contacted with the two pressing rollers at the same time; the fluted disc is rotationally arranged on one side of the pressing roller and makes contact with the two scraping plates at the same time; according to the powder coating cleaning device, the rotating shaft is driven by the pressing roller to rotate, the scraping plate is driven by the pushing assembly to conduct scraping and sweeping cleaning on the surface of the pressing roller in a reciprocating mode, on one hand, residual powder coating on the surface of the pressing roller is cleaned through friction, and on the other hand, the scraping plate is driven by the pushing assembly to conduct scraping and sweeping cleaning on the surface of the pressing roller; on the other hand, the powder coating flowing to the two sides of the compression roller is pushed to the two sides away from the compression roller and is close to the center of the compression roller as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to extruder technical field especially application in powder coating production's extruder. BACKGROUND

[0002] As a new type of environmental protection type coating, powder coating has the advantages of small environmental pollution, low resource and energy consumption, low production cost and high production efficiency. In the production process of powder coating, pre-mixing, extrusion molding to form sheet material are usually included. The extruder is a key equipment in powder coating production, and its working principle is based on the key steps of feeding, conveying, compression and heating, plasticizing and mixing, and extrusion. The double-screw extruder is widely used in the production of plastic products due to its better mixing and plasticizing performance, exhaust performance and extrusion stability.

[0003] The existing double-screw extrusion tablet press has some technical problems in powder coating production. For example, when the powder coating falls between the two compression rollers, the two compression rollers roll inward at the same time to extrude it into a sheet. In use, it is found that the middle part of the two compression rollers often contacts the just-fallen and hot powder coating. The relatively hot powder coating does not adhere to the compression roller, resulting in a relatively smooth middle part without coating residue. The two sides of the compression roller extrude the powder coating that falls from the center of the compression roller, which is not very hot and adheres to the compression roller. Therefore, the two sides of the compression roller have a certain amount of powder coating residue compared to the center of the compression roller. After a long time of use, the staff needs to clean it, otherwise it will affect the normal use of the extruder, which is troublesome. Therefore, we propose an extruder applied to powder coating production. SUMMARY

[0004] The extruder applied to powder coating production improves the problem that the two sides of the compression roller have a certain amount of powder coating residue compared to the center of the compression roller in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an extruder applied to powder coating production, including extruder main part, two compression rollers are rotationally arranged in the extruder main part;

[0006] A rotating shaft is fixedly arranged on one side of the compression roller.

[0007] A scraper is slidingly arranged in the extruder main part and provided with two scrapers, which are respectively located on both sides of the compression roller and simultaneously contact the two compression rollers.

[0008] A toothed disc one is rotationally arranged on one side of the compression roller.

[0009] A pushing assembly is arranged at one end of the rotating shaft and in contact with the scraper.

[0010] In the above scheme, the rotating shaft is driven to rotate by the compression roller, and the scraper is driven to reciprocate on the surface of the compression roller by the pushing assembly.

[0011] As a further description of the above technical scheme: the pushing assembly comprises a rotating block, a sliding groove, a fixed column and a tension spring, the rotating block is fixedly arranged at one end of the rotating shaft, the sliding groove is arranged in the rotating block, the sliding groove is S-shaped and surrounds the rotating block once, and the sliding groove is open at both ends, the fixed column is slidably arranged on one side of the extruder body, one end of the fixed column is spherical and located in the sliding groove, the other end of the fixed column is fixedly connected with one side of the scraper, and the tension spring is arranged between the fixed column and the extruder body, and both ends of the tension spring are fixedly connected with the fixed column and the extruder body respectively.

[0012] In the above scheme, the fixed column is driven to slide along the sliding groove by the rotating block, and the scraper is driven to reciprocate on the surface of the compression roller.

[0013] As a further description of the above technical scheme: a telescopic rod is arranged between the fixed column and the extruder body, both ends of the telescopic rod are fixedly connected with the fixed column and the extruder body respectively, and the tension spring is sleeved outside the telescopic rod.

[0014] In the above scheme, the telescopic rod limits and guides the tension spring and the fixed column.

[0015] As a further description of the above technical scheme: two limiting shafts are fixedly arranged on one side of the extruder body, and the two limiting shafts pass through the two scrapers simultaneously.

[0016] In the above scheme, the limiting shafts limit and guide the scrapers.

[0017] As a further description of the above technical scheme: the tooth disc is rotatably arranged at the center of the limiting shaft, the scraper is fixedly provided with a rack on one side, and two racks are arranged, which correspond to the two scrapers respectively, the two racks are engaged with the tooth disc one simultaneously, and are located on both sides of the tooth disc one respectively.

[0018] In the above scheme, the tooth disc one is driven to rotate by the rack, thereby driving the other rack to rotate.

[0019] As a further description of the above technical scheme: the extruder body further comprises a hopper, the hopper contains powder coating, a central shaft is rotatably arranged in the hopper, a plurality of plates one are fixedly arranged outside the central shaft, some of the plates one are in contact with the inner surface of the hopper, a horizontal rod is fixedly arranged in the plate one, and the horizontal rod is located at the center of the hopper.

[0020] In the above scheme, the central shaft drives the plate one to rotate.

[0021] As the further description of the above technical scheme: one end of the compression roller is fixedly connected with a shaft one, a transmission belt wheel is fixedly arranged outside the shaft one, a shaft two is rotatably connected to one side of the extruder body, a transmission belt wheel is also fixedly arranged outside the shaft two, a transmission belt one is rotatably arranged between the two transmission belt wheels, and the transmission belt one is in contact with the two transmission belt wheels at the same time.

[0022] In the above scheme, the shaft one drives the transmission belt wheel to rotate, and then drives the transmission belt one to rotate, so as to drive the other transmission belt wheel to rotate, and then drive the shaft two to rotate.

[0023] As the further description of the above technical scheme: the shaft two is fixedly provided with a bevel gear disc outside, and the central shaft is also fixedly provided with a bevel gear disc outside, and the two bevel gear discs are meshed with each other.

[0024] In the above scheme, the shaft two is driven to rotate by the bevel gear disc, and then the central shaft is driven to rotate.

[0025] The utility model has the following beneficial effects:

[0026] 1、 in the utility model, the rotating shaft is driven to rotate by the compression roller, the scraper is reciprocatingly scraped and cleaned on the surface of the compression roller by the pushing assembly, on the one hand, the residual powder coating on the surface of the compression roller is rubbed and cleaned, on the other hand, the powder coating falling to the both sides of the compression roller is pushed to the both sides far away from the compression roller, and is as close to the center of the compression roller as possible, so that the coating can not be in contact with the both sides of the compression roller for a long time, and the coating is prevented from adhering to the compression roller as far as possible.

[0027] 2、 in the utility model, the shaft one is driven to rotate by the compression roller, the plate one in the hopper is driven to rotate by the transmission belt one and the bevel gear disc, on the one hand, the residual coating is physically cleaned by rubbing and contacting the inner wall of the hopper, on the other hand, the coating in the hopper is stirred, so that the coating can be prevented from being blocked and mixed more uniformly. ACCURACY OF DRAWINGS

[0028] Figure 1 A perspective view of an extruder applied to powder coating production is provided for the utility model;

[0029] Figure 2 The utility model Figure 1 Another aspect of the sectional structure schematic view is shown in the figure;

[0030] Figure 3 The utility model Figure 2 Another aspect of the sectional structure schematic view is shown in the figure;

[0031] Figure 4 The utility model Figure 3 Another aspect of the sectional structure schematic view is shown in the figure;

[0032] Figure 5 For the utility model Figure 4 The enlarged structure schematic view of A area in the middle;

[0033] Figure 6 For the utility model Figure 4 The enlarged structure schematic view of B area in the middle.

[0034] Figure 7 For the utility model Figure 4 The enlarged structure schematic view of C area in the middle;

[0035] Figure 8 For the utility model Figure 7 Another orientation cross section structure schematic view;

[0036] Figure 9 For the utility model Figure 8 Another orientation cross section structure schematic view;

[0037] Figure 10 For the utility model Figure 9 The enlarged structure schematic view of D area in the middle;

[0038] Figure 11 For the utility model Figure 9 The enlarged structure schematic view of E area in the middle;

[0039] Figure 12 For the utility model Figure 9 The enlarged structure schematic view of F area in the middle;

[0040] Legend:

[0041] 1, extruder main body, 2, compression roller, 3, rotating shaft, 4, scraper, 5, toothed disc one, 6, push assembly, 7, rotating block, 8, sliding slot, 9, fixed column, 10, tension spring, 11, telescopic rod, 12, limit shaft, 13, rack, 14, hopper, 15, center shaft, 16, board one, 17, shaft one, 18, transmission belt wheel, 19, shaft two, 20, transmission belt one, 21, bevel gear disc. Specific implementation

[0042] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0043] Refer to Figures 1 to 12The utility model provides an embodiment: a kind of extruder applied to powder coating production, including extruder main body 1, two compression rollers 2 are rotationally arranged in extruder main body 1;

[0044] Rotary shaft 3 is fixedly arranged at one side of compression roller 2;

[0045] Scraper 4 is slidably arranged in extruder main body 1, and is provided with two, respectively located at the two sides of compression roller 2, and respectively simultaneously with two compression rollers 2 contact;

[0046] Gear disc one 5 is rotationally arranged at one side of compression roller 2;

[0047] Pushing assembly 6 is arranged at one end of rotary shaft 3, and is in contact with scraper 4, rotary shaft 3 is rotated by compression roller 2, and scraper 4 is reciprocated on the surface of compression roller 2 by pushing assembly 6 to be scraped and cleaned.

[0048] Pushing assembly 6 includes rotating block 7, sliding slot 8, fixed column 9, tension spring 10, rotating block 7 is fixedly arranged at one end of rotary shaft 3, sliding slot 8 is opened in rotating block 7, sliding slot 8 is S-shaped and around rotating block 7 a circle, and the first and last are communicated, one side of extruder main body 1 is slidably provided with fixed column 9, one end of fixed column 9 is spherical and located in sliding slot 8, the other end of fixed column 9 is fixedly connected with one side of scraper 4, tension spring 10 is arranged between fixed column 9 and extruder main body 1, and both ends of tension spring 10 are fixedly connected with fixed column 9 and extruder main body 1.

[0049] Telescopic rod 11 is arranged between fixed column 9 and extruder main body 1, both ends of telescopic rod 11 are fixedly connected with fixed column 9 and extruder main body 1, and tension spring 10 is sleeved outside telescopic rod 11.

[0050] Two limit shafts 12 are fixedly arranged at one side of extruder main body 1, and two limit shafts 12 pass through two scrapers 4 simultaneously.

[0051] Gear disc one 5 is rotationally arranged at the center of limit shaft 12, rack 13 is fixedly arranged on one side of scraper 4, and is provided with two, respectively corresponding with two scrapers 4, two racks 13 are engaged with gear disc one 5 simultaneously, and are respectively located at the two sides of gear disc one 5.

[0052] Extruder main body 1 further includes funnel 14, powder coating is placed in funnel 14, central shaft 15 is rotationally arranged in funnel 14, plate one 16 is fixedly arranged outside central shaft 15, and is provided with multiple, wherein some plate one 16 is in contact with the inner surface of funnel 14, and horizontal rod is fixedly arranged in plate one 16, and horizontal rod is located at the center of funnel 14.

[0053] The one end of the compression roller 2 is fixedly connected with a shaft one 17, the shaft one 17 is externally fixedly provided with a transmission belt wheel 18, the one side of the extruder main body 1 is rotatably connected with a shaft two 19, the shaft two 19 is also externally fixedly provided with a transmission belt wheel 18, the transmission belt one 20 is rotatably arranged between the two transmission belt wheels 18, and the transmission belt one 20 is in contact with the two transmission belt wheels 18 at the same time.

[0054] The shaft two 19 is externally fixedly provided with a bevel gear disc 21, and the central shaft 15 is also externally fixedly provided with a bevel gear disc 21, and the two bevel gear discs 21 are in meshing engagement with each other.

[0055] Working principle: the extruder main body 1 is started through program control, which relates to software control and is prior art, after the extruder main body 1 is started, the two compression rollers 2 are simultaneously rolled inward to extrude the falling powder coating (powder coating feeding is prior art, and details are not described here), the compression roller 2 rotates to drive the rotating shaft 3 to rotate, and then drive the rotating block 7 to rotate, so as to drive the sliding groove 8 to rotate, the sliding groove 8 is S-shaped and one circle around the rotating block 7 and is connected at the head and tail, when the sliding groove 8 rotates, because the fixed column 9 is slidably arranged on the extruder main body 1, the fixed column 9 in the sliding groove 8 starts to slide along the shape of the sliding groove 8, because of the existence of the tension spring 10, the fixed column 9 has a tendency to slide towards the compression roller 2, the rotating block 7 rotates to drive the sliding groove 8 to rotate, and the sliding groove 8 makes the fixed column 9 slide away from the compression roller 2, when the fixed column 9 slides to the farthest place from the compression roller 2, that is, the place where the sliding groove 8 is connected at the head and tail, under the action of the tension spring 10, the fixed column 9 will slide to the compression roller 2 along the vertical segment of the sliding groove 8, and then it is circulated back and forth, because the vertical segment of the sliding groove 8 has enough width, and the rotating speed of the compression roller 2 is relatively slow, so the fixed column 9 has enough time to slide to the closest place from the compression roller 2 in the vertical segment of the sliding groove 8, as shown in the figure, that is, the moment when the fixed column 9 is limited to slide to the farthest place from the compression roller 2 by the sliding groove 8, the next second is that the tension spring 10 drives the fixed column 9 to slide to the closest place from the compression roller 2 along the vertical segment of the sliding groove 8, and then it is circulated back and forth. Figure 7 、 8 As shown in the figure, that is, the moment when the fixed column 9 is limited to slide to the farthest place from the compression roller 2 by the sliding groove 8, the next second is that the tension spring 10 drives the fixed column 9 to slide to the closest place from the compression roller 2 along the vertical segment of the sliding groove 8, and then it is circulated back and forth.

[0056] The rotating shaft 3 rotates to drive the rotating block 7 to rotate, and then drive the sliding groove 8 to rotate, so as to drive the fixed column 9 to slide back and forth, and then drive the scraper 4 to rub and scratch back and forth on the outer surface of the two compression rollers 2, the rubbing and scratching has two advantages, one is to rub and clean the residual powder coating on the surface of the compression roller 2, and the other is to push the powder coating flowing to the two sides of the compression roller 2 to the two sides away from the compression roller 2, as far as possible to be close to the center of the compression roller 2, so that the coating can not be in contact with the two sides of the compression roller 2 for a long time, and the coating is prevented from being adhered to the compression roller 2 in advance, the back and forth circulation has the advantage of rubbing and scratching on the two sides of the compression roller 2, and the cleaning effect is enhanced.

[0057] The scraping plate 4 on one side reciprocates and slides on the compression roller 2, drives the rack 13 to slide, thereby drives the gear disc 5 to rotate, and further drives the rack 13 on the other side to slide, thereby drives the scraping plate 4 on the other side to reciprocate and slide and rub against the compression roller 2, and the scraping plate 4 on the other side can also reciprocate and slide and rub against the compression roller 2, so that only one rotating block 7 is arranged on one side of the compression roller 2, and the scraping plate 4 on both sides can be driven to rub against the compression roller 2 synchronously and simultaneously in the same direction or in the opposite direction, and the compression roller 2 can be cleaned;

[0058] The compression roller 2 rotates, drives the shaft 17 to rotate, thereby drives the transmission belt wheel 18 to rotate, further drives the transmission belt 20 to rotate, thereby drives the transmission belt wheel 18 on the other side to rotate, further drives the shaft 19 to rotate, thereby drives the bevel gear disc 21 to rotate, further drives the other bevel gear disc 21 to rotate, thereby drives the center shaft 15 to rotate, further drives the plate 16 to rotate, the plate 16 is in contact with the inner wall of the funnel 14, and the residual powder coating on the inner wall of the funnel 14 is cleaned through frictional contact, and the plate 16 has a cross rod inside, the cross rod is located at the center of the funnel 14, when the plate 16 rotates, the cross rod also rotates, and the cross rod has the advantages of being capable of stirring the powder coating in the funnel 14, preventing the powder coating from being blocked in the funnel 14, and making different coatings mixed more uniformly.

[0059] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An extruder applied to powder coating production, comprising an extruder body (1), two compression rollers (2) are arranged in rotation in the extruder body (1), characterized in that, Also includes: Rotary shaft (3), the rotary shaft (3) is fixedly arranged in the one side of the compression roller (2); The scraper (4) is slidably arranged in the extruder body (1), and is provided with two, respectively located on both sides of the compression roller (2), and respectively simultaneously with two compression roller (2) is contacted; The gear disc one (5) is rotatably arranged on one side of the compression roller (2); The pushing assembly (6) is arranged on one end of the rotary shaft (3) and is in contact with the scraper (4), the rotary shaft (3) is rotated by the compression roller (2), and the scraper (4) is reciprocatingly scraped and cleaned on the surface of the compression roller (2) by the pushing assembly (6).

2. An extruder for use in the production of powder coatings according to claim 1, characterized in that: The pushing assembly (6) comprises a rotating block (7), a sliding groove (8), a fixed column (9) and a tension spring (10), the rotating block (7) is fixedly arranged on one end of the rotary shaft (3), the sliding groove (8) is formed in the rotating block (7), the sliding groove (8) is S-shaped and winds around the rotating block (7) one circle, and the first and the last are communicated, the fixed column (9) is slidably arranged on one side of the extruder body (1), one end of the fixed column (9) is spherical and located in the sliding groove (8), the other end of the fixed column (9) is fixedly connected with one side of the scraper (4), and the tension spring (10) is arranged between the fixed column (9) and the extruder body (1), both ends of the tension spring (10) are fixedly connected with the fixed column (9) and the extruder body (1) respectively.

3. An extruder for use in the production of powder coatings according to claim 2, characterized in that: The fixed column (9) and the extruder body (1) are provided with a telescopic rod (11), both ends of the telescopic rod (11) are fixedly connected with the fixed column (9) and the extruder body (1) respectively, and the tension spring (10) is sleeved outside the telescopic rod (11).

4. An extruder for use in the production of powder coatings according to claim 3, characterized in that: Two limiting shafts (12) are fixedly arranged on one side of the extruder body (1), and the two limiting shafts (12) pass through the two scrapers (4) simultaneously.

5. An extruder for use in the production of powder coatings according to claim 4, characterized in that: The gear disc one (5) is rotatably arranged at the center of the limiting shaft (12), the rack (13) is fixedly arranged on one side of the scraper (4), and is provided with two, which correspond to the two scrapers (4) respectively, the two racks (13) are engaged with the gear disc one (5) simultaneously, and are located on both sides of the gear disc one (5) respectively.

6. An extruder for use in the production of powder coatings according to claim 5, characterized in that: The extruder body (1) further comprises a funnel (14), the funnel (14) is placed with powder coating, the center shaft (15) is rotatably arranged in the funnel (14), the plate one (16) is fixedly arranged outside the center shaft (15), and a plurality of plate ones (16) are arranged, some of which are in contact with the inner surface of the funnel (14), the horizontal rod is fixedly arranged in the plate one (16), and the horizontal rod is located at the center of the funnel (14).

7. An extruder for use in the production of powder coatings according to claim 6, characterized in that: One end of the compression roller (2) is fixedly connected with the shaft one (17), the transmission belt wheel (18) is fixedly arranged outside the shaft one (17), the shaft two (19) is rotatably connected on one side of the extruder body (1), the transmission belt wheel (18) is also fixedly arranged outside the shaft two (19), the transmission belt one (20) is rotatably arranged between the two transmission belt wheels (18), and the transmission belt one (20) is in contact with the two transmission belt wheels (18) simultaneously.

8. An extruder for use in the production of powder coatings according to claim 7, characterized in that: The outer part of the shaft (19) is fixedly provided with a bevel gear disc (21), and the outer part of the central shaft (15) is also fixedly provided with a bevel gear disc (21), and the two bevel gear discs (21) are engaged with each other.

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