Raw material mixing equipment for plastic building template production
By using a graded cutting mechanism and a plane particle size switching mechanism in the raw material mixing equipment for plastic building formwork production, the problem of plate defects caused by different melting times of raw material particles of different sizes is solved, efficient and uniform raw material mixing is achieved, and processing speed and finished product quality is improved.
Patent Information
- Application Number
- CN202420601373.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-03-26
AI Technical Summary
During the preparation of plastic sheets, the melting time of raw material particles of different sizes is different, resulting in some materials not being completely melted, causing plate defects and increasing processing time.
A raw material mixing equipment for the production of plastic building formwork was designed, and the graded cutting mechanism and a plane particle size switching mechanism were used to adjust the filter hole diameter by leveling the shaft and compensation parts to achieve separation and uniform mixing of raw materials of different particle sizes.
The processing speed is improved, the melting is not uniform, the finished product quality of the board is enhanced, and the normal rotation of the stirring structure is not hindered, and the appearance of crushing powder is avoided.
Smart Images
Figure CN222768748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a raw material mixing device for plates, in particular to a raw material mixing device for producing plastic building templates. Background Art
[0002] Plastic sheet is a sheet made of plastic as raw material. It is not a pure substance, but a mixture of many materials. Among them, high molecular polymer (or synthetic resin) is the main component of plastic. In addition, in order to improve the performance of plastic, various auxiliary materials such as fillers, plasticizers, lubricants, stabilizers, colorants, etc. must be added to the polymer to become a plastic with good performance.
[0003] In the preparation stage of plastic sheets, the raw materials need to be added together and mixed evenly, and then quantitatively fed and melt-extruded to obtain the corresponding shape of the plastic sheet. In this process, the uniformity of the mixture directly determines whether each area of the sheet meets the standards after forming. Users have found the following problems in the production of plastic sheets: different materials of different sizes melt at different times. If particles of different sizes are processed in the same batch, some materials may not be completely melted, resulting in an incomplete reaction, which makes it easy for defects to appear in some parts of the sheet. The only way is to increase the processing time, and increasing the processing time is likely to extend the duration of a single processing. Utility Model Content
[0004] The utility model provides a raw material mixing device for producing plastic building templates, which can effectively solve the above problems.
[0005] The utility model is achieved in this way:
[0006] A raw material mixing device for producing plastic building formwork, comprising a filling hopper for loading raw material particles, the bottom of the filling hopper is connected to a screw feeder, the screw feeder is arranged in a mixing box, a mixing structure is arranged on the side of the mixing box, and the raw material mixing device also includes:
[0007] A planar particle size switching mechanism, wherein an arc-shaped filter screen is arranged inside the mixing box, and a plurality of filter holes are opened on the arc-shaped filter screen. The planar particle size switching mechanism comprises a leveling structure arranged below the arc-shaped filter screen, and the leveling structure is driven by a driving structure. When the driving structure is enabled, the leveling structure is pushed up to be flush with the filter holes, thereby reducing the diameter of the filter holes. When the driving structure is closed, the leveling structure slides down and increases the diameter of the filter holes.
[0008] As a further improvement, the leveling structure includes a leveling shaft flush with the top surface of the filter hole, and a compensation piece is slidably sleeved on the leveling shaft. The compensation piece is connected to a driving structure. When the driving structure is activated, the compensation piece is pushed up to be flush with the leveling shaft, thereby reducing the diameter of the filter hole. When the driving structure is closed, the compensation piece slides down and increases the diameter of the filter hole.
[0009] As a further improvement, the compensation part includes a hollow sleeve fixed to the bottom of the mixing box, a compensation sleeve is slidably installed on the inner side of the hollow sleeve, and the compensation sleeve is movably fitted to the outer side of the leveling shaft. When the driving structure applies pressure to the hollow sleeve, the compensation sleeve is lifted up to be flush with the leveling shaft.
[0010] As a further improvement, the leveling shaft and the compensation sleeve are both concave arc structures.
[0011] As a further improvement, the driving structure comprises a hydraulic system for supplying oil, and the hydraulic system is connected to the hollow sleeve through a plurality of conduits.
[0012] The beneficial effects of the utility model are:
[0013] During the stirring stage, since the size of the raw material particles has not been screened, the large and small particles are mixed together, which can easily cause the very small particles to be melted all at once, while the large particles need to be melted continuously, and the melting period often needs to be controlled to the longest time period to avoid uneven melting, which greatly delays the processing. Therefore, the utility model sets a planar particle size switching mechanism on the basis of the graded feeding mechanism. In the initial stage, the leveling shaft and the compensation piece are both in the pushed-out state. At this time, the filter hole is small, allowing small particles to fall, so that the small particles in the raw material particles are separated first. This batch of separated particles is due to the particles. The particle size is small, so a short-time processing method can be used to increase the processing speed during melting. After continuous stirring and no small particles of raw materials are left, the compensating member is lowered to enlarge the aperture of the filter hole, so that raw materials of other particle sizes can be separated. By separating particles of different sizes, not only the overall processing speed is improved, but also the phenomenon of uneven melting can be avoided. Compared with the existing double-layer mesh plate to control the feeding particles, the leveling shaft and the compensating member will not hinder the normal rotation of the stirring structure, and there is no stratification phenomenon. It is not easy for the stirring structure to shear the particles, and the appearance of broken powder can be avoided while mixing.
[0014] In order to avoid the leveling shaft and the compensation piece from squeezing the particles and the stirring structure when they are at the filter hole position, thereby causing a large number of particles to be excessively sheared and wasted, the leveling shaft and the compensation sleeve of the utility model are both concave arc structures, which are flush with the bending angle of the entire arc filter. The particles either fall directly along the filter holes or continue to be carried away by the stirring structure and will not be crushed between the planar particle size switching mechanism and the stirring structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a construction plastic plate manufacturing device.
[0017] Figure 2 The utility model is a front view structural schematic diagram of a construction plastic plate manufacturing device.
[0018] Figure 3 The utility model is a schematic diagram of the top view of a construction plastic plate manufacturing device.
[0019] Figure 4 This utility model Figure 3 Cross-section view at AA in the middle.
[0020] Figure 5 The utility model is a structural schematic diagram of a graded material discharging mechanism.
[0021] Figure 6 It is a structural schematic diagram of the cooperation between a stirring box and a planar particle size switching mechanism of the utility model.
[0022] Figure 7 It is a structural schematic diagram of a planar particle size switching mechanism of the utility model.
[0023] Figure 8 This utility model Figure 7 Top view of the .
[0024] Fig. 9 This utility model Figure 8 Cross-section view at the middle BB. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0026] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0027] Reference Figures 1 to 9As shown, a raw material mixing device for producing plastic building templates includes a filling hopper 10 for loading raw material particles, the bottom of the filling hopper 10 is connected to a screw feeder 20, the screw feeder 20 is arranged in a mixing box 30, and a mixing structure 40 is arranged on the side of the mixing box 30. The raw material mixing device also includes: a graded unloading mechanism 50, the discharge port of the screw feeder 20 is provided with a timer, and the graded unloading mechanism 50 includes a movable component 501 arranged on the top of the mixing box 30. The top of the movable component 501 is fixedly connected to a material holding chamber 51, and a height control structure 52 is arranged on the side wall of the material holding chamber 51. A loading hopper 53 that can move up and down along the inner wall of the material holding chamber 51 is arranged on the inner side of the height control structure 52. An extension seat 54 is arranged above the movable component 501, and a gantry 55 is locked to the top of the extension seat 54. A material ejecting member 56 is hingedly installed on the gantry 55. When the timer detects that the screw feeder 20 has input a corresponding amount of the first raw material, the height control structure 54 is driven to move. 2 The loading hopper 53 is lowered to be flush with the discharge port of the screw feeder 20, and the first raw material is input into the loading hopper 53 and the material chamber 51. After the first raw material is fully fed, the second raw material is input through the screw feeder 20. When the first raw material needs to be replenished, the movable component 501 is driven away from the screw feeder 20, so that the lifting member 56 drives the material chamber 51 to turn sideways and gradually move the loading hopper 53 upward; the plane particle size switching mechanism 60, the interior of the mixing box 30 is provided with an arc filter 31, and the arc filter 31 is provided with a A plurality of filter holes, the planar particle size switching mechanism 60 includes a leveling structure 61 arranged below the arc filter 31, the leveling structure 61 includes a leveling shaft 611 flush with the top surface of the filter hole, a compensating member 612 is slidably sleeved on the leveling shaft 611, the compensating member 612 is connected to a driving structure 62, when the driving structure 62 is enabled, the compensating member 612 is pushed up to be flush with the leveling shaft 611, thereby reducing the diameter of the filter hole, and when the driving structure 62 is closed, the compensating member 612 slides down and increases the diameter of the filter hole.
[0028] In this embodiment, the stirring structure 40 is a rotating shaft with an arc-shaped rotating plate. The arc-shaped rotating handle stirs the particles to rotate and mix when rotating. The particulate matter consists of two parts: synthetic resin and filler. For ease of understanding, the synthetic resin is the feed material of the first section, and the filler is the feed material of the second section.
[0029] The timer at the discharge port of the screw feeder 20 will start timing during the feeding stage of the screw feeder 20. Since the output power of the screw feeder 20 is fixed, the feeding amount is also fixed, so the feeding amount can be calculated by its working time, so that the graded unloading mechanism 50 is started after a part of the first-stage feeding material is loaded. The specific feeding amount can be set, for example, after half of the first-stage material has entered, or after one-third has entered. The control principle of the timer is existing technology and will not be repeated here.
[0030] In a conventional feeding mechanism for plastic particles, one material is often transported to the mixing box first and then the other material is transported to mix the two materials evenly. However, this causes a large amount of the first-stage input material to sink to the bottom. Although it will be stirred, the material ratio of the first half will still be higher than the set amount. If workers are asked to feed the materials in steps, it will be more troublesome. In this regard, the utility model adds a graded feeding mechanism 50, which can allow the height control structure 52 to drive the loading hopper 53 to move down to the position of the spiral feeder 20 after the first stage of raw material particles are input for a preset amount of time. After storing half of the first stage of particles, the loading hopper 53 is reset, and then the worker can directly feed the second stage of materials. After half of the second stage of materials are fed, the loading hopper 53 is reloaded. Repeat the above operation. At this time, half of the first section material and half of the second section material exist in the mixing box 30. After stirring for a period of time, the lifting member 56 is retracted to tilt the entire loading hopper 53, so that the loading hopper 53 pushes open the gate plate that restrains it and then slides down into the mixing box 30. This can not only avoid the phenomenon of sinking to the bottom of the material when it is fed all at once, but also prevent the large difference in the proportion of different materials in the quantitative feeding stage. At the same time, it can reduce the number of times workers feed materials and lower the operating threshold of workers. Even workers with a short hands-on time can easily operate the equipment. The specific mixing time can also be set according to the set feeding amount. For example, when feeding half of the material, it needs to be stirred for 45 to 60 minutes, and when feeding one-third of the material, it only needs to be stirred for 25 to 30 minutes.
[0031] When the loading hopper 53 is not in use, it cannot interfere with the normal operation of the screw feeder 20. Therefore, the utility model sets a height control structure 52 at the outer side of the material storage chamber 51, and the height control structure 52 includes an adjusting motor 521 arranged on the outer side of the material storage chamber 51. A straight groove is opened on the outer side of the material storage chamber 51, and a linkage rod 522 is fixedly connected to the adjusting motor 521. One end of the linkage rod 522 is sleeved on the output end of the adjusting motor 521, and the other end of the linkage rod 522 passes through the straight groove and is connected to the loading hopper 53. When the loading hopper 53 is not in use, the loading hopper 53 is pulled up by the adjusting motor 521 via the linkage rod 522 and pulled to a specified position, that is, it stops after not interfering with the position of the screw feeder 20, so that it can be moved as needed.
[0032] After half of the first-stage material and half of the second-stage material are stored in the mixing box 30 and mixed for a period of time, it is necessary to introduce the other half of the first-stage material and half of the second-stage material from the material storage chamber 51 into the mixing box 30. Therefore, the utility model adds a material lifting member 56, and the material lifting member 56 includes a first connecting seat 561 locked to the top of the material storage chamber 51, and a second connecting seat 562 locked to the bottom of the gantry 55. A direction adjusting member 563 is arranged between the first connecting seat 561 and the second connecting seat 562. When the direction adjusting member 563 is retracted, the material storage chamber 51 is moved to the mixing box 30. As well as the tilting of the loading hopper 53, both ends of the lifting member 56 are arranged as hinged connecting seats, so as to be able to adapt to the position change and angle change of the material chamber 51. When the material chamber 51 needs to unload materials, the material chamber 51 can be tilted by retracting the adjusting member 563, so that the particles in the material chamber 51 pour down into the mixing box 30, wherein the material chamber 51 is provided with a gate plate (not shown in the figure) away from the screw feeder 20, and the gate plate and the material chamber 51 are in a hinged state, which closes the material chamber 51 under normal conditions, and will be pushed open by the descending particles after the material chamber 51 is tilted.
[0033] In order to prevent the particles from leaking out after being input into the loading hopper 53 by the screw feeder 20, a sealing baffle 531 is provided on the side of the loading hopper 53 close to the screw feeder 20. The height of the sealing baffle 531 is higher than the edge of the loading hopper 53, so that the particles can be tightly confined inside the loading hopper 53. Preferably, the distance between the sealing baffle 531 and the inner side wall of the top surface of the material holding chamber 51 is 12 to 25 cm, with a certain degree of flexibility to avoid completely closing the feed opening.
[0034] However, when the material lifting member 56 tilts the material storage chamber 51, the material loading hopper 53 is likely to collide with the screw feeder 20. Therefore, the present invention further provides a movable assembly 501 on the basis of the material lifting member 56, the material loading hopper 53, and the material storage chamber 51. The movable assembly 501 includes a guide rail 5011 locked on the top of the mixing box 30, and an active sliding seat 5012 and a driven sliding seat 5013 are slidably mounted on the guide rail 5011. The active sliding seat 5012 is connected to one side of the bottom of the material storage chamber 51 through a hinge 5014, and the driven sliding seat 5013 is connected to the other side of the bottom of the material storage chamber 51 through a straight rod 5015. On the other hand, when the material lifting member 56 moves upward, the driven sliding seat 5013 disengages from the guide rail 5011, and the material containing chamber 51 tilts downward. The movable component 501 can drive the loading hopper 53 and the material containing chamber 51 to make a certain displacement in the horizontal direction, thereby avoiding the position that interferes with the spiral feeder 20. At the same time, because of the hinge 5014 and the driven sliding seat 5013, the rotation of the material lifting member 56 is not affected. The driven sliding seat 5013 is only attached to the guide rail 5011 and driven. Therefore, when the loading hopper 53 and the material containing chamber 51 rotate along the hinge 5014, the driven sliding seat 5013 can be disengaged from the guide rail 5011.
[0035] During the stirring stage, since the size of the raw material particles has not been screened, the large and small particles are mixed together, which can easily cause very small particles to be melted all at once, while large particles need to be melted continuously, and often the melting period needs to be controlled to the longest time period to avoid uneven melting, which greatly delays the processing. Therefore, the utility model is provided with a planar particle size switching mechanism 60 on the basis of the graded feeding mechanism 50. In the initial stage, the leveling shaft 611 and the compensating member 612 are both in the pushed-out state. At this time, the filter hole is small, allowing small particles to fall, so that the small particles in the raw material particles are separated first. This batch of separated particles has a large particle size. The size of the raw materials is relatively small, so a short-time processing method can be used to increase the processing speed during melting. After continuous stirring and no small particles of raw materials are left, the compensation member 612 is lowered to enlarge the aperture of the filter hole, thereby separating raw materials of other particle sizes. By separating particles of different sizes, not only the overall processing speed is improved, but also the phenomenon of uneven melting can be avoided. Compared with the existing double-layer mesh plate to control the discharge of particles, the leveling shaft 611 and the compensation member 612 will not hinder the normal rotation of the stirring structure 40, and there is no stratification phenomenon. It is not easy for the stirring structure 40 to shear the particles, and the appearance of broken powder can be avoided while mixing.
[0036] Specifically, the compensation member 612 includes a hollow sleeve 6121 fixed to the bottom of the mixing box 30, and a compensation sleeve 6122 is slidably installed on the inner side of the hollow sleeve 6121. The compensation sleeve 6122 is movably fitted on the outer side of the leveling shaft 611. When the driving structure 62 applies pressure to the hollow sleeve 6121, the compensation sleeve 6122 is lifted up to be flush with the leveling shaft 611. In this embodiment, the leveling shaft 611 is completely fixed, and the aperture of the filter hole is adjusted only by moving the compensation sleeve 6122 up and down. In other embodiments, the position of the leveling shaft 611 can also be adjusted to achieve the effect of adjusting a variety of particle sizes.
[0037] It should be noted that the mixing in this embodiment is only applicable to the mixing of solid particles, and is not applicable to an environment with liquids, otherwise the liquids will directly leak out from the filter holes, which is not conducive to mixing and stirring.
[0038] In order to prevent the leveling shaft 611 and the compensation piece 612 from squeezing the particles and the stirring structure 40 when they are at the filter hole position, thereby causing a large number of particles to be excessively sheared and wasted, the leveling shaft 611 and the compensation sleeve 6122 of the utility model are both concave arc structures, which are flush with the bending angle of the entire arc filter 31. The particles either fall directly along the filter holes or continue to be carried away by the stirring structure 40 and will not be crushed between the planar particle size switching mechanism 60 and the stirring structure 40.
[0039] In order to facilitate unified control, the driving structure 62 includes a hydraulic system for oil supply, and the hydraulic system is connected to the hollow sleeve 6121 through a plurality of conduits 621. Since the positions of the leveling shaft 611 and the compensation member 612 are different, the lengths of the conduits 621 are actually different, thereby ensuring that the movement accuracy of the hollow sleeve 6121 meets the requirements.
[0040] Another embodiment of the present invention further provides a method for manufacturing a plastic sheet for construction, using the above-mentioned equipment for manufacturing a plastic sheet for construction, comprising the following steps:
[0041] S1, pouring high molecular polymer and other fillers into the filling hopper 10 in different orders, conveying them to the grading unloading mechanism 50 on the mixing box 30 through the screw feeder 20 for material separation, and the raw material particles after material separation enter the mixing box 30 for mixing;
[0042] S2. Pass the stirred particles into a quantitative feeder and set the discharging parameters of the quantitative feeder so that the weight of each discharge is the same;
[0043] S3, the quantitative raw material particles are input into the extruder, and the plastic sheets of the required shape are extruded after melting and heating;
[0044] S4, cutting the edges of the formed plastic sheet into a sheet shape with neat edges and in the right size;
[0045] S5. The cut sheets are fed into a flattening machine for flattening to obtain flat finished plastic sheets that meet the size.
[0046] Furthermore, the S1 specifically includes:
[0047] S11, first pour the polymer particles into the filling hopper 10, and gradually transport them into the mixing box 30 through the screw feeder 20. After the timer calculates the set time of transportation, the height control structure 52 slides down to allow the loading hopper 53 to carry the remaining polymer particles, until the remaining polymer particles are input into the loading hopper 53, and then pour other fillers, and repeat the above operation;
[0048] S12, the mixed particles in the mixing box 30 are stirred by the stirring structure 40, and the raw material particles with small particle size will directly fall through the gap between the leveling shaft 611, the compensation piece 612 and the filter hole, and the small particles in the polymer particles and other fillers are filtered out, so that the small particles in the raw material particles enter the quantitative feeder first;
[0049] S13, after the stirring is continued for a set time, the driving structure 62 is started to drive the compensating member 612 downward to expand the caliber of the filter hole so that the particles of other sizes can be fully stirred and mixed before being input into the next step.
[0050] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A raw material mixing equipment for producing plastic building formwork, characterized in that: The invention comprises a filling hopper (10) for loading raw material particles, the bottom of the filling hopper (10) is connected to a screw feeder (20), the screw feeder (20) is arranged in a mixing box (30), and a mixing structure (40) is arranged on the side of the mixing box (30), and the raw material mixing equipment also comprises: A planar particle size switching mechanism (60), wherein an arc-shaped filter screen (31) is disposed inside the mixing box (30), and a plurality of filter holes are formed on the arc-shaped filter screen (31). The planar particle size switching mechanism (60) comprises a leveling structure (61) disposed below the arc-shaped filter screen (31), and the leveling structure (61) is driven by a driving structure (62). When the driving structure (62) is activated, the leveling structure (61) is pushed up to be flush with the filter holes, thereby reducing the diameter of the filter holes. When the driving structure (62) is closed, the leveling structure (61) slides down and increases the diameter of the filter holes.
2. A raw material mixing equipment for producing plastic building formwork according to claim 1, characterized in that: The leveling structure (61) comprises a leveling shaft (611) flush with the top surface of the filter hole, a compensating member (612) is slidably sleeved on the leveling shaft (611), and the compensating member (612) is connected to a driving structure (62). When the driving structure (62) is activated, the compensating member (612) is pushed up to be flush with the leveling shaft (611), thereby reducing the diameter of the filter hole; when the driving structure (62) is closed, the compensating member (612) slides down and increases the diameter of the filter hole.
3. A raw material mixing equipment for producing plastic building formwork according to claim 2, characterized in that: The compensating member (612) comprises a hollow sleeve (6121) fixed to the inner bottom of the mixing box (30), a compensating sleeve (6122) is slidably mounted on the inner side of the hollow sleeve (6121), the compensating sleeve (6122) is movably fitted to the outer side of the leveling shaft (611), and the driving structure (62) lifts the compensating sleeve (6122) until it is flush with the leveling shaft (611) when applying pressure to the hollow sleeve (6121).
4. A raw material mixing equipment for producing plastic building formwork according to claim 3, characterized in that: The leveling shaft (611) and the compensation sleeve (6122) are both concave arc-shaped structures.
5. The raw material mixing equipment for producing plastic building formwork according to claim 1, characterized in that: The driving structure (62) includes a hydraulic system for supplying oil, and the hydraulic system is connected to the hollow sleeve (6121) through a plurality of conduits (621).