Automatic packaging and densifying device and method for nitrocotton products

Abstract

The invention provides an automatic packaging and densifying device and method for nitrocotton products. The automatic packaging and densifying device for the nitrocotton products comprises a temporary storage bin, a material distributing mechanism, a feeding mechanism, a material receiving and initial weighing mechanism, an air hammer compacting mechanism, a fine feeding station and a material barrel conveyor which are sequentially arranged from top to bottom. In the production process, a packaging barrel enters the conveyor, and the whole process is completed through material receiving, primary weighing, air hammer densification, fine feeding and fine weighing. According to the automatic packaging and densifying device for the nitrocotton product, man-machine isolation is achieved, and the labor cost of workers and the operation risk are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of nitrocellulose production, and particularly relates to an automatic packaging and densifying device and method for nitrocellulose products. BACKGROUND

[0002] The nitrocellulose product has the characteristics of flocculent and sheet-shaped products, poor uniformity, small bulk density, about 0.15 g / cm3, flammable solid, easy to burn in the presence of sparks, high temperature, static electricity, etc. The sheet-shaped nitrocellulose contains about 35% water, has powder and dust in the production process, and has certain viscosity, and the filling density is unstable. In the existing nitrocellulose production process, the product receiving and packaging is a fire-related dangerous operation post, and is manually operated, which requires a large number of personnel in a dangerous and harmful operation site, and does not realize man-machine isolation, so the labor cost of personnel is high, and the operation risk is large. Therefore, an automatic packaging method and device for nitrocellulose are needed. SUMMARY

[0003] In view of the deficiencies of the current product receiving and packaging of nitrocellulose, an automatic packaging and densifying device and method for nitrocellulose products are provided, which adopts a material bin buffer, a powder mechanism, a linear vibration conveyor, a weighing system, etc., realizes automatic production of key links such as automatic receiving and packaging, weighing and densifying of products, realizes man-machine isolation, and has the characteristics of reducing labor cost and operation risk of personnel.

[0004] In the first aspect, the application provides an automatic packaging and densifying device for nitrocellulose products, which comprises, from top to bottom, a buffer bin, a material distribution mechanism, a material feeding mechanism, a receiving and preliminary weighing mechanism, a pneumatic hammer compaction mechanism, a fine material feeding station, and a material bucket conveyor;

[0005] The buffer bin supplies material to the material distribution mechanism as needed;

[0006] The material distribution mechanism comprises a material distribution valve and two material distribution grooves, and the switching action of the material distribution valve guides the material of the buffer bin to be respectively conveyed to the two material distribution grooves;

[0007] The material feeding mechanism comprises a linear vibration conveyor corresponding to the two material distribution grooves, and the linear vibration conveyor is respectively connected with a coarse material discharge channel and a fine material discharge channel, and the bottom of the coarse material discharge channel and the fine material discharge channel is respectively provided with a first linear vibration conveyor and a second linear vibration conveyor;

[0008] The material bucket conveyor is used for conveying a receiving material bucket containing material;

[0009] The material receiving and initial weighing system comprises a homogenizing device and a first weighing module arranged below the material receiving barrel, the material receiving barrel receives material from the outlet of the coarse discharging channel by the barrel conveyor, the material receiving barrel is initially weighed by the first weighing module when it is in line and dynamically, and stops receiving material when the set weight is reached, while the homogenizing device homogenizes the material in the material receiving barrel.

[0010] The air hammer compaction mechanism is used to compact the material in the material receiving barrel that has completed homogenization and initial weighing and is delivered to the compaction station.

[0011] The fine feeding station comprises a second weighing module for fine weighing of the material receiving barrel after compaction, the material receiving barrel receives material from the outlet of the fine discharging channel by the barrel conveyor, and precise feeding is achieved.

[0012] In some embodiments, a pair of vibration arch-breaking devices are installed on the outer wall of the buffer bin to vibrate the bin and shake off the adhered material.

[0013] In some embodiments, the switching action of the material distribution valve guides the material in the buffer bin to be delivered to two material distribution grooves, specifically comprising a first cylinder, a first connecting rod, and a material distribution plate, the first cylinder drives the first connecting rod to swing the material distribution plate to achieve material distribution, the material distribution plate is fixed on a swing shaft, the swing shaft is driven by the first connecting rod, and the swing shaft is arranged at a middle position of the two material distribution grooves. A visual window is arranged, the surface finish of the material distribution mechanism is high, and a circular arc transition, movable part hard friction prevention, or soft connection design is adopted.

[0014] In some embodiments, the homogenizing device comprises an eccentric rotating base arranged at the bottom of the material receiving barrel, and a second cylinder, the second cylinder lifts the material receiving barrel, a second connecting rod driven by a rubber wheel cylinder clamps the material receiving barrel, a pneumatic motor drives a synchronous wheel and then drives the rubber wheel to rotate, thereby rotating the material receiving barrel to homogenize the material.

[0015] In some embodiments, the air hammer compaction mechanism comprises a densification air hammer, the densification air hammer comprises a third cylinder, a pressing plate is arranged at the end of the third cylinder, and an inclined surface and a polishing surface are arranged above the pressing plate.

[0016] In some embodiments, dust covers are designed at the outlets of the coarse discharging channel and the fine discharging channel.

[0017] In some embodiments, the fine discharging channel realizes precise discharging by setting the vibration frequency of the second linear vibration driver and the discharging time.

[0018] In a second aspect, the application further provides an automatic packaging and densification method for nitrocellulose products, comprising the following steps:

[0019] The material is dropped to the distribution chute through the buffer bin, and the distribution is realized by swinging the distribution plate fixed on the swing shaft through the first cylinder driving the first connecting rod;

[0020] The material is distributed into the coarse discharge channel and the fine discharge channel through the distribution chute, wherein the coarse discharge channel is provided with the first linear vibration conveyor, and the material is dropped to the receiving barrel through the vibration of the first linear vibration driver;

[0021] The receiving barrel is received by the discharge opening of the coarse discharge channel through the barrel conveyor, the drum of the barrel conveyor stops running, the second cylinder lifts the receiving barrel, the second connecting rod driven by the rubber-coated wheel cylinder clamps the receiving barrel, the synchronous wheel driven by the pneumatic motor drives the rubber-coated wheel to rotate, thereby driving the receiving barrel to rotate, and the material is dropped to the receiving barrel through the feeding mechanism, and the initial weighing is performed in cooperation with the first weighing module, the set weight is less than the packaging weight, the feeding is stopped when the set weight is reached, and the receiving barrel is conveyed to the compaction station through the initial barrel conveyor;

[0022] The third cylinder end installs the pressing plate, and the compaction and densification work is performed according to the program set pressure, lifting speed and compaction and densification times, and after completion, the receiving barrel is automatically conveyed to the next station through the barrel conveyor;

[0023] The fine feeding station is provided with the second linear vibration conveyor, and the material is dropped to the receiving barrel through the vibration of the second linear vibration driver in cooperation with the second weighing module, and the feeding is stopped when the packaging weight is reached.

[0024] The automatic packaging and densification device and method for nitrocellulose products provided by the application comprises, from top to bottom, a buffer bin, a distribution mechanism, a feeding mechanism, a receiving and initial weighing mechanism, a pneumatic hammer compaction mechanism, a fine feeding station and a barrel conveyor. In the production process, the packaging barrel enters the conveyor, and the whole process is completed through receiving and initial weighing, pneumatic hammer densification, fine feeding and fine weighing. The application realizes automatic production of key links such as product packaging, automatic receiving, weighing and compaction and densification, and sets a vibration arch breaking device according to the characteristics of nitrocellulose products having certain viscosity and producing dust in the production process, prevents material adhesion, and also sets a dust cover to prevent excessive dust, solves the problem of high risk of personnel operation in a dangerous operation site, and reduces labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1The application discloses a product receiving and densifying device.

[0026] Figure 2 The application discloses a product receiving and densifying device. Figure 1 Front view

[0027] Figure 3 The application discloses a product receiving and densifying device. Figure 2 A view of the application

[0028] Figure 4 The application discloses a product receiving and densifying device. Figure 2 B view of the application

[0029] Figure 5 The application discloses a product receiving and densifying device.

[0030] Figure 6 The application discloses a product receiving and densifying device.

[0031] In the figure: 1-buffering bin, 2-vibration arch breaking device (pneumatic), 3-distributing valve, 4-distributing groove, 41-coarse discharging channel, 42-fine discharging channel, 51-first linear vibration conveyor, 52-second linear vibration conveyor, 6-dust cover, 7-densifying air hammer, 8-receiving barrel, 9-barrel conveyor, 10-conveying roller, 11-pneumatic motor, 12-first weighing module, 13-second air cylinder, 14-roller motor, 15-third air cylinder. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the application clearer, specific embodiments of the application are further described below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are only used to help understand the application and do not constitute a limitation on the application.

[0033] Example one

[0034] As shown in the figure, it is a schematic view of a product automatic packaging and densifying device for nitrocellulose provided by the embodiment of the application. Figure 1

[0035] The embodiment provides a product automatic packaging and densifying device for nitrocellulose, which comprises, from top to bottom, a buffering bin, a distributing mechanism, a feeding mechanism, a receiving and initial weighing mechanism, an air hammer compaction mechanism, a fine feeding station and a barrel conveyor.

[0036] The buffering bin supplies materials to the distributing mechanism according to needs, and a pair of vibration arch breaking devices are installed on the outer wall of the buffering bin, so that the materials are vibrated and dropped by vibrating the bin.

[0037] ​The material distribution mechanism comprises a material distribution valve and two material distribution grooves, and the switching action of the material distribution valve guides the material in the buffer bin to be respectively transported to the two material distribution grooves, and specifically comprises a first cylinder, a first connecting rod, and a material distribution plate, the first cylinder drives the first connecting rod to drive the material distribution plate to swing to realize material distribution, the material distribution plate is fixed on a swing shaft, the swing shaft is driven by the first connecting rod, and the swing shaft is arranged at a middle position of the two material distribution grooves;

[0038] The feeding mechanism comprises a linear vibration conveyor corresponding to two material distribution grooves, and the two material distribution grooves are respectively communicated with a coarse discharging channel and a fine discharging channel, the bottom of the coarse discharging channel is provided with a first linear vibration conveyor, and the bottom of the fine discharging channel is provided with a second linear vibration conveyor; a dust cover is designed at the discharging port of the coarse discharging channel and the discharging port of the fine discharging channel; the fine discharging channel realizes accurate discharging by setting the vibration frequency of the second linear vibration driver and the discharging time; when the first and second linear vibration drivers stop running, feeding can be immediately stopped, and millisecond level can be achieved;

[0039] The material bucket conveyor is used for conveying the material receiving bucket, and the material bucket conveyor is a roller type conveyor, the roller is driven by a chain wheel, and a speed reducer drives.

[0040] The material receiving and initial weighing system, as shown in Figure 5 , comprises a homogenizing device and a first weighing module arranged below the material receiving bucket, the material receiving bucket receives material at the discharging port of the coarse discharging channel by the material bucket conveyor, the material receiving bucket is initially weighed by the first weighing module in an online dynamic manner when receiving material, stops receiving material after reaching the set weight, and the homogenizing device operates to homogenize the material in the material receiving bucket; the homogenizing device comprises an eccentric rotating base arranged at the bottom of the material receiving bucket and a second cylinder, the second cylinder lifts the material receiving bucket, a second connecting rod is driven by a rubber-coated wheel cylinder to clamp the material receiving bucket, a pneumatic motor drives a synchronous wheel and then drives the rubber-coated wheel to rotate, thereby driving the material receiving bucket to rotate and homogenize the material, eliminating the situation that the material in the material receiving bucket is piled up at the top when feeding, making the material more uniform and ensuring the loading amount; the initial weighing is online dynamic weighing, stops feeding after reaching the set weight, and automatically transports the material cylinder to the next station; the eccentric rotating base is additionally arranged at the bottom of the material receiving bucket, uniformly distributes the material in the bucket during the material receiving process, prevents the material from being piled up at the top, and ensures that the filling is not loose; the material receiving bucket rotates on the eccentric rotating base; the eccentric rotating base is directly connected to the second cylinder, the material receiving bucket is lifted when receiving material and does not contact the material bucket conveyor, the material receiving bucket is on the rotating base when weighing the received material, and the rubber-coated wheel moves the material receiving bucket to the conveying roller on the side when the operation is completed; after the material receiving bucket completes the material receiving by rotating, the rubber-coated wheel cylinder connected to the second connecting rod drives the rubber-coated wheel to loosen the clamped material receiving bucket, the second cylinder lowers the material receiving bucket again, the bottom of the material receiving bucket contacts the conveying roller, and the material receiving bucket is sent out by the material bucket conveyor.

[0041] The air hammer compaction mechanism, as shown in Figure 6The air hammer compaction mechanism includes a densification air hammer, and the densification air hammer includes a third air cylinder, an end of the third air cylinder is provided with a pressing plate, and the pressing plate is provided with an inclined surface and a polishing surface above the inclined surface to prevent material from being hung or stacked; the pressure and lifting speed of the third air cylinder are adjustable, the action of the third air cylinder is controlled by a PLC program, the compaction and densification times can be set by parameters, and the compaction and densification are completed, and then the material receiving barrel is automatically transported to the next station.

[0042] The fine feeding station includes a second weighing module, is used for fine weighing of the material receiving barrel after compaction, the material receiving barrel is received by the material receiving barrel conveyor from the air hammer compaction mechanism to a discharge port of a fine discharging channel, the fine discharging channel can realize discharging by setting parameters such as vibrator frequency and discharging time, and realizes accurate feeding by cooperating with the second weighing module.

[0043] Embodiment two

[0044] The embodiment provides an automatic packaging and densification method for nitrocellulose products, and includes the following steps:

[0045] The material is dropped into the distribution chute through the buffer bin, and the distribution is realized by swinging the distribution plate fixed on the swinging shaft through the first cylinder driving the first connecting rod.

[0046] The material is divided into a coarse discharging channel and a fine discharging channel through the distribution chute, the coarse discharging channel is provided with a first linear vibration conveyor, and the material is dropped into the material receiving barrel through vibration of the first linear vibration driver.

[0047] The material receiving barrel is received by the material receiving barrel conveyor to a discharge port of the coarse discharging channel, the roller of the material receiving barrel conveyor stops running, the second cylinder lifts the material receiving barrel, the rubber wheel is clamped to hold the material receiving barrel through the second connecting rod driven by the rubber wheel cylinder, the synchronous wheel is driven to rotate the rubber wheel by the pneumatic motor, so as to drive the material receiving barrel to rotate, and the material is dropped into the material receiving barrel through the feeding mechanism, the first weighing module is cooperated to perform initial weighing, the weight is set to be less than the packaging weight, the feeding is stopped when the set weight is reached, and the material receiving barrel is transported to the compaction station by the material receiving barrel conveyor.

[0048] The third cylinder is provided with a pressing plate at an end thereof, compaction and densification are performed according to the set pressure, lifting speed and compaction and densification times, and the material receiving barrel is automatically transported to the next station by the material receiving barrel conveyor after the compaction and densification are completed.

[0049] The material receiving barrel reaches the fine feeding station, the fine discharging channel is provided with a second linear vibration conveyor, the second weighing module is cooperated, vibration of the second linear vibration driver is performed, the material is dropped into the material receiving barrel, and the feeding is stopped when the packaging weight is reached.

[0050] The coarse feeding speed is fast, and the fine feeding speed is slow, which is mainly set by adjusting the motor frequency of the first and second linear vibration drivers, so as to guarantee the packaging time rhythm.

[0051] The automatic packaging and densification method for nitrocellulose products realizes automation, realizes man-machine isolation, and improves the product automatic packaging production efficiency and the production process safety level.

[0052] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic packaging and densification device for nitrocellulose products, characterized in that, It includes, in order from top to bottom, a buffer silo, a material distribution mechanism, a feeding mechanism, a receiving and initial weighing mechanism, a pneumatic hammer compaction mechanism, a fine feeding station, and a material bucket conveyor; The buffer silo supplies materials to the material distribution mechanism as needed. The material distribution mechanism includes a material distribution valve and two material distribution troughs. The switching action of the material distribution valve guides the material in the buffer silo to be conveyed to the two material distribution troughs respectively. The feeding mechanism includes a linear vibrating conveyor with two corresponding material distribution troughs, namely a coarse feeding channel and a fine feeding channel. The bottom of the coarse feeding channel and the fine feeding channel are respectively connected to a first linear vibrating conveyor and a second linear vibrating conveyor. The material bucket conveyor is used to transport receiving buckets that contain materials; The receiving and initial weighing system includes a homogenizing device and a first weighing module located below the receiving hopper. The receiving hopper is delivered to the outlet of the coarse feeding channel by the hopper conveyor. When the receiving hopper receives material, the first weighing module performs initial weighing online and dynamically. The receiving stops after the set weight is reached. At the same time, the homogenizing device homogenizes the material in the receiving hopper. The air hammer compaction mechanism is used to compact the material in the receiving bucket that has been homogenized and initially weighed and delivered to the compaction station. The precision feeding station includes a second weighing module for precisely weighing the receiving bucket after the material has been compacted. The receiving bucket is delivered by the material bucket conveyor to the outlet of the precision feeding channel to receive the material, thereby achieving precise feeding.

2. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, It also includes a pair of vibrating arch-breaking devices installed on the outer wall of the buffer silo to vibrate the silo and shake off the sticky materials.

3. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, The switching action of the distribution valve guides the material in the buffer hopper to be conveyed to the two distribution troughs respectively. Specifically, it includes: a first cylinder, a first connecting rod, and a distribution plate. The first cylinder drives the first connecting rod to drive the distribution plate to swing and realize the distribution. The distribution plate is fixed on the swing shaft. The swing shaft is driven by the first connecting rod and is located in the middle position of the two distribution troughs.

4. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, The homogenizing device includes an eccentric rotating base at the bottom of the receiving hopper and a second cylinder. The eccentric rotating base is connected to the second cylinder. The second cylinder lifts the receiving hopper, and at the same time, the rubber-coated wheel cylinder drives the second connecting rod to drive the rubber-coated wheel to clamp the receiving hopper. The pneumatic motor drives the synchronous wheel and then drives the rubber-coated wheel to rotate, thereby driving the receiving hopper to rotate and homogenize the material.

5. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, The air hammer compaction mechanism includes a densifying air hammer, which includes a third cylinder. A pressure plate is installed at the end of the third cylinder, and the upper surface of the pressure plate is inclined and polished.

6. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, Dust covers are designed at the outlets of the coarse feeding channel and the fine feeding channel.

7. The automatic packaging and densification device for nitrocellulose products according to claim 1, characterized in that, The precision feeding channel achieves precise feeding by setting the vibration frequency and feeding time of the second linear vibration driver.

8. An automatic packaging and densification method for nitrocellulose products, using the automatic packaging and densification device for nitrocellulose products according to any one of claims 1-7, characterized in that, Includes the following steps: Material is distributed by falling from the buffer hopper into the distribution trough, and the first cylinder drives the first connecting rod to swing the distribution plate fixed on the swing shaft to achieve material distribution. Feeding: The material is divided into two paths, the coarse feeding channel and the fine feeding channel, through the material distribution trough. The coarse feeding channel is equipped with the first linear vibrating conveyor, which vibrates through the first linear vibrating driver to make the material fall into the receiving bucket. Initial weighing of the receiving material: The receiving bucket is delivered to the outlet of the coarse feeding channel by the bucket conveyor. The rollers of the bucket conveyor stop running, the second cylinder lifts the receiving bucket, and at the same time, the second cylinder drives the second connecting rod to drive the rubber-coated wheel to clamp the receiving bucket. The pneumatic motor drives the synchronous wheel and then drives the rubber-coated wheel to rotate, thereby driving the receiving bucket to rotate. At the same time, the material falls into the receiving bucket through the feeding mechanism. Initial weighing is performed in conjunction with the first weighing module. The set weight is less than the packaging weight. After the set weight is reached, feeding stops, and the bucket conveyor transports the receiving bucket to the compaction station. Compaction and densification: A pressure plate is installed at the end of the third cylinder. The compaction and densification work is carried out according to the pressure, lifting speed and compaction and densification number set in the program. After completion, the receiving bucket is automatically transported to the next station by the bucket conveyor. For fine feeding, after the receiving hopper arrives at the fine feeding station, the fine feeding channel is equipped with a second linear vibrating conveyor, which works in conjunction with the second weighing module. The material falls into the receiving hopper through the vibration of the second linear vibrating driver, and feeding stops after the packaging weight is reached.

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