Equipment for automatically stripping outer bag after isostatic pressing of neodymium iron boron blank

Abstract

The invention discloses an automatic outer bag stripping device after neodymium iron boron blank isostatic pressing, and belongs to the technical field of neodymium iron boron manufacturing. The automatic outer bag stripping device comprises a workbench, a conveying mechanism is arranged on the workbench, and the conveying mechanism comprises two symmetrically-arranged first conveying belts and a second conveying belt located between the two first conveying belts; the conveying directions of the second conveying belt and the first conveying belt are opposite, a plurality of baffles surrounding the first conveying belt are fixedly arranged on the first conveying belt at equal intervals, sliding plates are elastically and slidably arranged on the two sides of the conveying mechanism correspondingly, and one ends of the sliding plates extend to the positions above the conveying mechanism to be provided with inclined edges. A neodymium iron boron product is conveyed to extrude the inclined edge so that the sliding plate can slide in the direction close to the support, the sliding plate is elastically and slidably connected with a first hot air spray pipe on the inclined edge side, and the sliding plate is elastically and slidably connected with a second hot air spray pipe on the side away from the support. Outer bags on the three sides of the neodymium iron boron product are cut through the hot air spraying pipes, the outer bags are pulled to be separated from the neodymium iron boron product through friction force, and the stripping efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of NdFeB manufacturing, and in particular relates to a device for automatically peeling the outer bag of NdFeB rough pieces after isostatic pressing. Background Art

[0002] The manufacturing process of sintered NdFeB includes batching, smelting, hydrogen crushing, air flow grinding, forming, isostatic pressing, oil stripping, sintering and post-processing. Oil stripping is to remove the packaging of the product after isostatic pressing to facilitate sintering.

[0003] In the prior art, Chinese patent publication number CN115502397B discloses an automatic outer bag stripping device for NdFeB blanks after isostatic pressing. The outer bag of NdFeB is stripped by positioning - puncturing and inserting the bag - blowing air - cutting the bag - pulling the bag. However, the efficiency of stripping a single outer bag is not as high as manual stripping. Moreover, since the outer bag is generally attached to the NdFeB magnet, puncturing and blowing air to expand the outer bag for the purpose of bag cutting can easily cause scratches on the surface of the NdFeB magnet. In addition, the yield rate of the outer bag expanded by blowing air is low.

[0004] Therefore, it is necessary to propose an automatic outer bag stripping device for NdFeB blanks after isostatic pressing to solve the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an automatic outer bag stripping device for NdFeB blanks after isostatic pressing, which is used to solve the problem in the prior art that the bag insertion and blowing cannot ensure the expansion of the outer bag and has low efficiency.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: The present invention provides an automatic outer bag stripping device for NdFeB rough pieces after isostatic pressing, comprising a workbench, wherein at least one group of conveying mechanisms are arranged side by side on the workbench, wherein the conveying mechanism comprises two symmetrically arranged first conveyor belts and a second conveyor belt located between the two first conveyor belts, wherein the conveying direction of the second conveyor belt is opposite to the conveying direction of the first conveyor belt, and the first conveyor belt is evenly spaced and provided with a plurality of baffles fixedly connected to the first conveyor belt, and the plurality of baffles are arranged around the first conveyor belt, wherein the workbench is fixedly provided with brackets on both sides of the conveying mechanism, and the brackets are provided with a plurality of cutting assemblies side by side along the conveying direction, wherein the cutting assembly comprises a slide plate slidably arranged on the bracket, a first spring is fixedly connected between the slide plate and the bracket, and an inclined edge is provided at one end of the slide plate extending to the top of the conveying mechanism, and the NdFeB product is conveyed to squeeze the inclined edge so that the slide plate can slide in a direction close to the bracket, the slide plate is elastically slidably connected to a first hot air nozzle on the inclined edge side, and the slide plate is elastically slidably connected to a second hot air nozzle on the side away from the bracket.

[0007] Furthermore, the slide plate is provided with a first slide groove on the inclined side, the first hot air nozzle is slidably connected in the first slide groove, and a second spring is fixedly connected between the first hot air nozzle and the inner wall of the first slide groove. The slide plate is provided with a second slide groove on the side away from the bracket, the second hot air nozzle is slidably connected in the second slide groove, and a third spring is fixedly connected between the second hot air nozzle and the inner wall of the second slide groove.

[0008] Furthermore, the first hot air nozzle and the second hot air nozzle have the same structure. The first hot air nozzle includes a sleeve slidably arranged in a first slide groove, the second spring is fixedly arranged between the sleeve and the first slide groove, the sleeve is connected to the hot air spraying equipment through a pipeline, a baffle is provided in the sleeve for limited sliding, a fourth spring is fixedly connected between the baffle and the inner wall of the sleeve, a valve ball is movably arranged between the baffle and the air outlet of the sleeve, and the valve ball and the neodymium iron boron product are pressed against each other to squeeze the baffle so that an annular air outlet gap is formed between the valve ball and the air outlet of the sleeve.

[0009] Furthermore, a limit plate fixedly connected to the workbench is provided in the middle of the first conveyor belt along the conveying direction, and a conveying space for conveying NdFeB products is formed between the limit plates on the two first conveyor belts. The distance between two adjacent first baffles is greater than the length of the NdFeB product, the height of the limit plate is less than the height of the NdFeB product, and the slide is located above the limit plate.

[0010] Furthermore, a cutting blade is fixedly provided on the side of the sleeve close to the NdFeB product.

[0011] Furthermore, a plurality of friction strips are arranged on the second conveyor belt at equal intervals and surround the second conveyor belt.

[0012] Furthermore, the friction strip is arranged obliquely along the conveying direction of the second conveyor belt.

[0013] Furthermore, a third conveyor belt is provided on the bracket and is located between the two first conveyor belts. The structure of the third conveyor belt is consistent with that of the second conveyor belt, and the distance between the third conveyor belt and the second conveyor belt is consistent with the height of the NdFeB product.

[0014] Furthermore, a collection box for collecting outer bags is fixedly installed at the bottom of the workbench and is located below the conveying mechanism.

[0015] The beneficial effects of the present invention are: The present invention uses a hot air nozzle to cut the outer bags on three sides of the NdFeB product, and the reverse transmission of the second conveyor belt pulls the cut outer bags to separate from the NdFeB product, avoiding the separate operations of positioning - puncturing the bag - blowing - cutting the bag - pulling the bag, thereby improving the stripping efficiency. The hot air nozzle softens the outer bag and the friction force pulls the outer bag, thereby avoiding damage to the surface of the NdFeB product caused by puncturing the bag or cutting.

[0016] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration: Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A top cross-sectional view of the overall structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the cooperation between the cutting assembly and the NdFeB product according to an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the cutting assembly according to an embodiment of the present invention.

[0018] The markings in the accompanying drawings are as follows: workbench 1, bracket 101, collection box 102, first conveyor belt 2, limit plate 201, baffle 202, second conveyor belt 3, friction strip 301, neodymium iron boron product 4, cutting assembly 5, slide plate 501, first spring 502, inclined edge 503, first slide 504, first hot air nozzle 505, second spring 506, second slide 507, second hot air nozzle 508, third spring 509, sleeve 510, baffle 511, fourth spring 512, valve ball 513, cutting blade 514, third conveyor belt 6. DETAILED DESCRIPTION

[0019] like Figures 1 to 4As shown, the present invention provides an automatic outer bag stripping device for NdFeB rough pieces after isostatic pressing, comprising: a workbench 1, at least one group of conveying mechanisms arranged side by side on the workbench 1, the conveying mechanism comprising two symmetrically arranged first conveyor belts 2 and a second conveyor belt 3 located between the two first conveyor belts 2, the conveying direction of the second conveyor belt 3 being opposite to that of the first conveyor belt 2, a limit plate 201 fixedly connected to the workbench 1 is provided in the middle of the first conveyor belt 2 along the conveying direction, a plurality of baffles 202 fixedly connected to the first conveyor belt 2 are arranged at equal intervals on the first conveyor belt 2, the plurality of baffles 202 are arranged around the first conveyor belt 2, a conveying space for conveying NdFeB products 4 is formed between the limit plates 201 on the two first conveyor belts 2, the distance between two adjacent first baffles 202 is greater than the length of the NdFeB product 4, the height of the limit plates 201 is less than the height of the NdFeB product 4, brackets 101 are fixedly provided on both sides of the conveying space on the workbench 1, and brackets 101 are arranged side by side along the conveying direction on the bracket 101 There are multiple cutting components 5, and the cutting components 5 include a slide 501 slidably arranged on the bracket 101. The slide 501 is located above the limit plate 201 to avoid the limit plate 201. A first spring 502 is fixedly connected between the slide 501 and the bracket 101. One end of the slide 501 extends into the conveying space and is provided with an inclined edge 503. When conveying the NdFeB product 4 to squeeze the inclined edge 503, the slide 501 can slide in the direction close to the bracket 101 and compress the first spring 502. A first slide groove 504 is provided on the plate 501 on the side of the inclined edge 503, and a first hot air nozzle 505 is slidably provided in the first slide groove 504, and a second spring 506 is fixedly connected between the first hot air nozzle 505 and the inner wall of the first slide groove 504. The slide plate 401 is provided with a second slide groove 507 on the side away from the bracket 101, and a second hot air nozzle 508 is slidably provided in the second slide groove 507, and a third spring 509 is fixedly connected between the second hot air nozzle 508 and the inner wall of the second slide groove 507.

[0020] In this solution, the conveying mechanism is provided with conveying equipment on both sides of the opposite sides along the conveying direction, wherein the NdFeB product 4 is conveyed to the conveying mechanism by the conveying equipment located on the front side of the conveying mechanism, so that the NdFeB product 4 is located between the limit plates 201 on the two first conveyor belts 2, and the baffle 202 can be rotated to the rear side of the NdFeB product 4 along the conveying direction through the transmission of the first conveyor belt 2, and then the baffle 202 pushes the NdFeB product 4 to be conveyed. During the conveying process of the NdFeB product 4, when it abuts against the inclined edge 503 of the slide plate 501, the first hot air nozzle 504 is arranged near the middle of the front side of the NdFeB product 4, and hot air is ejected by the first hot air nozzle 504 to soften or melt the outer bag of the front wall. During the conveying process of the NdFeB product 4, the inclined edge 503 of the slide plate 501 is squeezed to make the slide plate 501 move towards the direction close to the bracket 101. Move and squeeze the first hot air nozzle 505 so that the first hot air nozzle 505 can cut horizontally along the front side of the NdFeB product 4. When the NdFeB product 4 squeezes the slide plate 501 until the slide plate 501 is away from the side of the bracket 101 and is against the side of the NdFeB product 4, hot air is sprayed through the second hot air nozzle 508 to soften or melt the outer bag of the side wall of the NdFeB product 4, so that the NdFeB product 4 can pass through the cutting component 5 to cut the outer bag on the front, left and right sides. During the transmission of the NdFeB product 4, due to the reverse transmission of the second conveyor belt 3, the friction force can pull the cut outer bag of the NdFeB product 4 to separate the outer bag from the NdFeB product 4. The conveying mechanism conveys the NdFeB product 4 to the conveying equipment located at the rear side of the conveying mechanism, and the outer bag falls between the two. The NdFeB product 4 after the outer bag is stripped is continued to be conveyed by the conveying equipment. Among them, the distance between two adjacent first baffles 202 is greater than the length of the NdFeB product 4, so that when the NdFeB product 4 does not collide with the baffle 202, the reverse transmission of the second conveyor belt 3 can make the baffle 202 and the NdFeB product 4 collide, so as to avoid the friction force affecting the pulling of the outer bag due to the reverse transmission of the second conveyor belt 3 when the NdFeB product 4 is transmitted.

[0021] This solution uses a hot air nozzle to cut the outer bags on three sides of the NdFeB product 4, and the reverse transmission of the second conveyor belt 3 pulls the cut outer bags to separate from the NdFeB product 4, avoiding the separate operations of positioning - puncturing the bag - blowing - cutting the bag - pulling the bag, improving the stripping efficiency, and softening the outer bag with the hot air nozzle and pulling the outer bag with friction, avoiding damage to the surface of the NdFeB product 4 caused by puncturing the bag or cutting.

[0022] In one embodiment of the present invention, the first hot air nozzle 504 has the same structure as the second hot air nozzle 408. The first hot air nozzle 504 includes a sleeve 510 slidably arranged in the first slide groove 504, and the second spring 506 is fixedly arranged between the sleeve 510 and the first slide groove 504. The sleeve 510 is connected to a hot air spraying device (not shown in the figure) through a pipeline. A baffle 511 is slidingly arranged in the sleeve 510, and a fourth spring 512 is fixedly connected between the baffle 511 and the inner wall of the sleeve 510. A valve ball 513 is movably arranged between the baffle 511 and the air outlet of the sleeve 510. The valve ball 513 and the neodymium iron boron product 4 can squeeze the baffle 511 to form an annular air outlet gap between the valve ball 513 and the air outlet of the sleeve 510.

[0023] In this solution, when the valve ball 513 contacts the NdFeB product 4, the valve ball 513, under the action of the fourth spring 512, is pressed against the air outlet of the sleeve 510 and closes the air outlet setting, so that the hot air ejected by the hot air spraying equipment cannot be ejected from the air outlet of the sleeve 510. At this time, a pressure relief valve can be set on the pipeline to ensure the pressure balance inside the sleeve 510. This is a conventional technical means in this field and will not be repeated here. When the valve ball 513 is pressed against the NdFeB product 4, the transmission of the NdFeB product 4 will squeeze the valve ball 513, so that the hot air in the sleeve 510 can be ejected from the annular air outlet gap to soften or melt the outer bag. Since the valve ball 513 is pressed against the NdFeB product 4, during the movement of the slide 501, the outer bag is cut by the rolling of the valve ball 513, thereby improving the separation effect of the outer bag and the NdFeB product 4.

[0024] In one embodiment of the present invention, a cutting blade 514 is fixedly provided on the side of the sleeve 510 close to the NdFeB product 4 .

[0025] In this solution, when the valve ball 513 abuts against the NdFeB product 4, there is a gap between the cutting blade 514 and the surface of the NdFeB product 4, so only the outer bag can be cut. Since the softened outer bag will become wrinkled, which is convenient for cutting by the cutting blade 514, this solution sets the cutting blade 514 on the sleeve 510 to avoid contact between the cutting blade 514 and the NdFeB product 4, so as to avoid scratching the NdFeB product 4.

[0026] In one embodiment of the present invention, friction strips 301 are arranged on the second conveyor belt 3 at equal intervals and surround the second conveyor belt 3. The friction strips 301 are arranged obliquely along the conveying direction of the second conveyor belt 3 to increase the friction between the friction strips 301 and the NdFeB products 4, thereby improving the separation effect between the outer bag and the NdFeB products 4.

[0027] In one embodiment of the present invention, a third conveyor belt 6 is provided on the bracket 101 and is located between the two first conveyor belts 2. The structure of the third conveyor belt 6 is consistent with that of the second conveyor belt 3, and the distance between the third conveyor belt 6 and the second conveyor belt 3 is consistent with the height of the neodymium iron boron product 4.

[0028] In this solution, the outer bag on the bottom wall of the NdFeB product 4 is pulled by the second conveyor belt 3, and the outer bag on the top wall of the NdFeB product 4 is pulled by the third conveyor belt 6 to improve the separation effect of the outer bag and the NdFeB product 4.

[0029] In one embodiment of the present invention, a collecting box 102 located below the conveying mechanism is fixedly installed on the bottom of the workbench 1, and the collecting box 102 is used to collect the outer bags.

[0030] In this solution, the outer bag can be conveyed by the second conveyor belt 3 to the front side of the conveyor mechanism and fall down, and can also be conveyed by the first conveyor belt 2 to the rear side of the conveyor mechanism and fall down.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A device for automatically peeling the outer bag of NdFeB blanks after isostatic pressing, including a workbench, characterized by: At least one group of conveying mechanisms is arranged side by side on the workbench, and the conveying mechanism includes two symmetrically arranged first conveyor belts and a second conveyor belt located between the two first conveyor belts. The conveying direction of the second conveyor belt is opposite to the conveying direction of the first conveyor belt. A plurality of baffles fixedly connected to the first conveyor belt are arranged at equal intervals on the first conveyor belt, and a plurality of baffles are arranged around the first conveyor belt. Brackets are fixedly arranged on both sides of the conveying mechanism on the workbench, and a plurality of cutting components are arranged side by side on the bracket along the conveying direction. The cutting component includes a slide plate slidably arranged on the bracket, and a first spring is fixedly connected between the slide plate and the bracket. One end of the slide plate extends to the top of the conveying mechanism and is provided with an inclined edge. The conveying of NdFeB products to extrude the inclined edge can make the slide plate slide in the direction close to the bracket. The slide plate is elastically slidably connected to the first hot air nozzle on the inclined edge side, and the slide plate is elastically slidably connected to the second hot air nozzle on the side away from the bracket.

2. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 1 is characterized by: The slide is provided with a first slide groove on the inclined side, the first hot air nozzle is slidably connected in the first slide groove, and a second spring is fixedly connected between the first hot air nozzle and the inner wall of the first slide groove. The slide is provided with a second slide groove on the side away from the bracket, the second hot air nozzle is slidably connected in the second slide groove, and a third spring is fixedly connected between the second hot air nozzle and the inner wall of the second slide groove.

3. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 2 is characterized by: The first hot air nozzle and the second hot air nozzle have the same structure. The first hot air nozzle includes a sleeve slidably arranged in a first slide groove, the second spring is fixedly arranged between the sleeve and the first slide groove, the sleeve is connected to the hot air spraying equipment through a pipeline, a baffle is provided in the sleeve for limiting sliding, a fourth spring is fixedly connected between the baffle and the inner wall of the sleeve, a valve ball is movably arranged between the baffle and the air outlet of the sleeve, and the valve ball and the neodymium iron boron product are pressed against each other to squeeze the baffle so that an annular air outlet gap is formed between the valve ball and the air outlet of the sleeve.

4. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 3 is characterized by: A limit plate fixedly connected to the workbench is provided in the middle of the first conveyor belt along the conveying direction, and a conveying space for conveying NdFeB products is formed between the limit plates on the two first conveyor belts. The distance between two adjacent first baffles is greater than the length of the NdFeB product, the height of the limit plate is less than the height of the NdFeB product, and the slide is located above the limit plate.

5. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 4 is characterized in that: A cutting blade is fixedly provided on the side of the sleeve close to the NdFeB product.

6. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 1 is characterized by: The second conveyor belt is provided with a plurality of friction strips arranged around the second conveyor belt at equal intervals.

7. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 6 is characterized in that: The friction strips are arranged obliquely along the conveying direction of the second conveyor belt.

8. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 7 is characterized in that: The bracket is provided with a third conveyor belt located between the two first conveyor belts. The structure of the third conveyor belt is consistent with that of the second conveyor belt. The distance between the third conveyor belt and the second conveyor belt is consistent with the height of the NdFeB product.

9. The automatic outer bag stripping equipment for NdFeB blanks after isostatic pressing according to claim 1 is characterized in that: A collection box for collecting outer bags is fixedly installed at the bottom of the workbench and is located below the conveying mechanism.

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