A sand supply mechanism for releasing metal sand used in chemical fiber production process

Abstract

The present invention discloses a sand supply mechanism for releasing metal sand used in a chemical fiber production process, which comprises a sand falling assembly and a discharger that cooperates with the sand falling assembly to realize discharge; the sand falling assembly comprises a metal sand carrying container and a metal sand feeder, the metal sand feeder comprises a metal sand feeding guide trough arranged below the discharge port of the metal sand carrying container, a vibrator arranged on the feeding side of the metal sand feeding guide trough, and left and right barrier plates respectively arranged on its discharge side and forming a directional flow-limiting gap for metal sand to pass through; the discharger comprises a sand receiving hopper arranged below the aforementioned discharge side, a discharge valve body connected to the sand receiving hopper and having a discharge through hole opened therein, and a discharge rotating shaft that can rotate relative to the discharge through hole and is used to close or conduct the discharge through hole; the sand supply mechanism can realize effective control of metal sand discharge, ensure the stability and controllability of the metal sand discharge weight, and the sand supply structure is simple and easy to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical fiber production, and in particular relates to a filter material used for filtering chemical fiber spinning melt in chemical fiber production, namely metal sand, and its packaging, and specifically relates to a sand supply mechanism for releasing metal sand used in the chemical fiber production process. Background Art

[0002] Metal sand, also known as metal filter sand, is currently considered to be the best choice for chemical fiber spinning melt filtration materials. Specifically, metal sand has the following advantages: 1. Due to its high degree of special shape, large specific surface area, and strong ability to filter impurities, it extends the service life of the component and greatly reduces production costs. The use of metal sand as filter material will extend the service life of the component by more than 3 times compared to conventional glass beads, sea sand, and corundum filter materials, and reduce the cost of using component-related auxiliary materials (filters, gaskets, etc.), component cleaning costs and manpower losses, as well as production capacity losses; 2. Reduce the spinning hair and breakage rate. The irregular concave and convex sharp characteristics of metal sand are unmatched by conventional filter materials. This sharp angle has a high hardness and is not easily deformed even under a pressure of 40MPA. During the filtration process, it can well puncture bubbles in the melt and block foreign matter and agglomerated particles, thereby improving the accuracy of filtration. degree; 3. The component pressure is stable, and the pressure rise process is slow and steady, avoiding production fluctuations and quality instability caused by unstable pressure. The metal sand will not change its shape with changes in melt pressure and temperature; 4. Improve the uniformity and spinnability of the melt. Metal sand is a good conductor of heat and can ensure that the temperature of the high-temperature melt in the component sand bin is uniform; 5. The chemical properties are stable and will not produce adverse reactions with polyester melt; 6. It is easy to use and does not require cleaning and drying like glass beads, sea sand, and corundum; 7. The pore size and porosity can be controlled, and it is resistant to thermal shock, high temperature and low temperature.

[0003] Therefore, using metal sand as a filter material plays a very important role in improving the quality of fibers and the efficiency of chemical fiber production! However, in actual operation, the metal sand used in the spinning assembly needs to be quantified each time. Conventionally, about 50-300g is used at a time. Depending on the process requirements, for example, 200g, 150g, etc. are currently used at a time. However, the error needs to be controlled within 3g. Too much or too little will have a significant impact on the process pressure, which may cause a significant difference in the filtration effect and affect the spinning quality. For weighing metal sand, the existing conventional operation is to manually load the metal sand into a measuring cup and then weigh it. However, this method is both time-consuming and labor-intensive and may have large deviations due to manual operation errors. At present, some people have proposed to use existing automatic discharging devices for quantitative discharging; for example, Chinese utility model patent CN205129633U discloses a precision sand supply system device, which includes a sand storage tank, a vibrating screen, a metering and propelling sand supply mechanism, a vibrator, a compressed air pipe and a nozzle. Its characteristics are that a vibrating screen is installed in the middle of the sand storage tank, a vibrator is installed on one side of the sand storage tank, a metering and propelling sand supply mechanism is installed at the outlet position of the lower end of the sand storage tank, the outlet position of the metering and propelling sand supply mechanism is connected to a plane wave vibration mechanism, the outlet of the plane wave vibration mechanism is equipped with a sand discharge pipe, one side of the sand discharge pipe outlet position is connected to a compressed air pipe, and the outlet end of the sand discharge pipe is equipped with a nozzle.

[0004] Another example is Chinese utility model patent CN206306535U, which discloses a weighing and discharging mechanism for a crumb cake machine. A weighing and discharging device is provided above a feeding hopper. A weighing sensor is provided on the top surface of the feeding hopper. A weighing support is fixedly provided on the upper surface of the weighing sensor. A discharging hopper is provided on the weighing support. The discharging hopper consists of two parts. The bottom can be opened or closed by a discharging cylinder. Above the feeding port of the discharging hopper is the material conveying end of a conveyor. The weighing sensor is connected to a weighing control system through a signal line. The weighing control system is controlled by an electric control box. The hydraulic system is composed of electrical control elements connected by lines and controlled by an integrated circuit in the electronic control box. The hydraulic system includes a downward pressure cylinder and a discharge cylinder; it also includes a baffle fixedly arranged on the side of the feeding push head, and the size of the baffle is such that it can block the outlet below the feeding hopper during the forward movement of the feeding push head. One end of the feeding push head is arranged next to the outlet below the feeding hopper, and the other end is pressed against the large end of the cam by spring contraction. The center of the arc of the large end of the cam is fixedly connected to a rotating shaft, and the rotating shaft is fixedly connected to the motor shaft of the motor. The motor is controlled by the electrical control element.

[0005] However, there are still some defects as follows: 1. The degree of automation is not high, and manual semi-automatic operation is still required; 2. Due to the special characteristics of metal sand, such as the heavy weight of single particles, it is easy to cause large quality deviations due to poor discharge control; 3. The structure is too complicated and not streamlined; and so on. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome one or more shortcomings in the existing technology and propose a new sand supply mechanism for releasing metal sand in the chemical fiber production process. The sand supply mechanism can effectively control the discharge of metal sand, ensure the stability and controllability of the metal sand discharge weight, and the sand supply structure is simple and easy to operate.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A sand supply mechanism for releasing metal sand in a chemical fiber production process, the sand supply mechanism comprising at least one set of sand shakeout components and a discharger that cooperates with the at least one set of sand shakeout components to discharge the material into a sand cup;

[0009] The shakeout assembly includes a metal sand carrying container, a metal sand feeder disposed below the metal sand carrying container, the metal sand feeder including a metal sand feeding chute disposed below the discharge port of the metal sand carrying container, a vibrator disposed at the bottom of the feeding side of the metal sand feeding chute, and left and right blocking plates respectively disposed on the discharge side of the metal sand feeding chute, the left and right blocking plates forming a directional flow-limiting gap for metal sand to pass through;

[0010] The discharger includes a sand receiving hopper arranged below the discharge side of the metal sand feeding guide trough, a discharge valve body connected to the discharge port of the sand receiving hopper and provided with a discharge hole inside, and a discharge rotating shaft that can rotate relative to the discharge hole and is used to close or open the discharge hole. The discharge rotating shaft is provided with a guide hole that cooperates with the discharge hole to achieve the connection of the discharge hole.

[0011] According to some preferred and specific aspects of the present invention, the blanking rotation axis passes through the blanking through hole, and an extension direction of the blanking rotation axis is perpendicular to an extension direction of the blanking through hole.

[0012] According to some preferred aspects of the present invention, the diameter of the blanking rotating shaft is larger than the diameter of the blanking through hole.

[0013] According to some preferred aspects of the present invention, the angle between the extension direction of the metal sand feeding guide trough and the horizontal direction is less than 5°.

[0014] According to some preferred aspects of the present invention, the left barrier piece includes a left barrier piece fixing portion fixed on the metal sand feeding guide trough, and a first bendable portion integrally formed with the left barrier piece fixing portion; the right barrier piece includes a right barrier piece fixing portion fixed on the metal sand feeding guide trough, and a second bendable portion integrally formed with the right barrier piece fixing portion; the first bendable portion and the second bendable portion constitute the directional flow limiting gap.

[0015] According to some preferred aspects of the present invention, the width of the directional flow-limiting gap gradually decreases from the feed side to the discharge side.

[0016] According to some preferred aspects of the present invention, the metal sand carrying container includes a straight barrel with a cylindrical upper portion and a funnel with a lower portion that is integrally formed with or fixedly connected to the straight barrel. A handle for hand grasping is provided on the outer wall of the straight barrel, and a discharge port of the funnel faces the metal sand feeding guide groove.

[0017] According to some preferred and specific aspects of the present invention, the metal sand carrying container further comprises an annular magnet detachably mounted on the discharge port of the funnel.

[0018] According to some specific and preferred aspects of the present invention, the sand supply mechanism further includes a cylindrical support barrel for supporting the metal sand carrying container, and the metal sand carrying container further includes a support connecting boss formed at the lower end of the straight barrel, and the metal sand carrying container is mounted on the cylindrical support barrel through the support connecting boss.

[0019] According to some specific and preferred aspects of the present invention, at least one opening is formed on the cylindrical support barrel, and the metal sand feeding guide groove passes through the opening.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] The present invention is based on the situation that the existing automatic discharging device is not suitable for the metal sand discharging of the present invention. Specifically, for metal sand, the discharging process is not controllable and the precision is insufficient, making it difficult to ensure the stability and controllability of the weight of the metal sand discharged each time, and the error is large; the specific sand supply mechanism provided by the present invention, through the combination of hierarchical multi-level control, can ensure that the weighing error each time is within ±3g or even almost error-free, thereby ensuring the spinning quality of the subsequent process, and is suitable for the automatic and controllable discharging of single metal sand with larger weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic diagram of the overall structure of a metal sand scale for chemical fiber production according to an embodiment of the present invention (one perspective);

[0024] Figure 2This is a schematic diagram of the overall structure of a metal sand scale for chemical fiber production according to an embodiment of the present invention (from another perspective);

[0025] Figure 3 A schematic top view (one viewing angle) of a metal sand scale assembly machine for chemical fiber production according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the coordination of the sand supply mechanism, sand cup, and weighing mechanism according to an embodiment of the present invention;

[0027] Figure 5 This is an overall schematic diagram of a sand supply mechanism according to an embodiment of the present invention being arranged on a base;

[0028] Figure 6 for Figure 5 A magnified schematic diagram of point A in the middle;

[0029] Figure 7 Schematic diagram of the cooperation between the metal sand carrying container and the cylindrical support barrel in the sand supply mechanism of an embodiment of the present invention;

[0030] Figure 8 This is a structural diagram of a discharger in a sand supply mechanism according to an embodiment of the present invention;

[0031] Figure 9 This is an overall schematic diagram of a cup supply mechanism according to an embodiment of the present invention disposed on a base;

[0032] Figure 10 for Figure 9 The schematic diagram after the shell is hidden;

[0033] Figure 11 for Figure 10 A magnified schematic diagram of point B in the middle;

[0034] Figure 12 This is a side view of the cup supply mechanism according to an embodiment of the present invention, with the outer shell hidden (only one cup storage bucket is shown);

[0035] Figure 13 Schematic diagram (viewed from bottom to top) of the sand cup barrier plate in the cup supply mechanism of an embodiment of the present invention closing or opening the sand cup drop opening on the cup storage support;

[0036] Figure 14 Schematic diagram of the cooperation between the falling and obstruction of the sand cup in the cup storage bucket in the cup supply mechanism of the embodiment of the present invention;

[0037] Figure 15 Schematic diagram of the cooperation between the sand cup carrier plate and the cam divider in the cup feeding mechanism according to an embodiment of the present invention;

[0038] Figure 16 Schematic diagram of the structure of the cup pushing assembly in the cup feeding mechanism according to an embodiment of the present invention and its coordination diagram for pushing the cup;

[0039] Figure 17 A side view of a push cup assembly and its positional relationship according to an embodiment of the present invention;

[0040] Figure 18 1. A schematic top view of a push cup of a push cup assembly according to an embodiment of the present invention;

[0041] Figure 19 This is a side view of a weighing mechanism provided on a base according to an embodiment of the present invention;

[0042] Figure 20 This is an enlarged schematic diagram of point C in 19;

[0043] Figure 21 This is a schematic structural diagram of a sand cup used in a metal sand weighing and loading machine for chemical fiber production according to an embodiment of the present invention;

[0044] Figure 22 It is a side view schematic diagram of the cooperation between the sand cup and the sand cup lifting platform in an embodiment of the present invention;

[0045] Among them, 1. base; 2. sand supply mechanism; 211. metal sand carrying container; 2111. straight barrel; 2112. funnel; 2113. annular magnet; 2114. supporting and connecting boss; 2115. handle; 2121. metal sand feeding guide; 2122. vibrator; 2123. left barrier; 21231. left barrier fixing portion; 21232. first bendable portion; 2124. right barrier; 21241. right barrier fixing portion; 21242. second bendable portion; 221. sand receiving hopper; 222. discharge valve body; 2221. discharge through hole; 223. discharge rotating shaft; 2231. guide hole; 224. discharge rotating shaft Rotating shaft drive component; 23. Cylindrical support barrel; 3. Cup supply mechanism; 31. Cup storage support; 311. Sand cup drop port; 32. Cup storage barrel; 331. Stopper; 332. Sand cup blocking plate; 3321. Rotating support body; 3322. Sand cup blocking plate; 3323. Sand cup blocking plate drive component; 3324. Sand cup blocking plate drive shaft; 34. Sand cup carrier; 341. Carrier body; 342. Mounting hole; 343. Sand cup support boss; 35. Cam divider; 351. Cam drive component; 36. Proximity switch; 37. Sand cup guide support plate; 38. Cup pusher assembly; 381. Cup pusher block; 382. Cup pusher drive component; 383. Cup pusher bracket; 39. Housing; 4. Weighing mechanism; 41. Sand cup lifting platform; 42. Weighing sensor; 43. Weighing sensor support platform; 44. Sand cup lifting drive component; 5. Sand cup; 51. Cup body; 52. Sand guide boss; 53. Groove; 6. Control system; 7. Sand cup tray; 8. Sand cup sand receiving area; 9. Feeding level measuring cup sensor. DETAILED DESCRIPTION

[0046] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise expressly specified or limited. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] The present invention will be further described below with reference to the accompanying drawings: Figures 1 to 22As shown, this example provides a metal sand weighing and loading machine for chemical fiber production, which includes a base 1 and a sand supply mechanism 2 arranged on the base 1 for releasing metal sand, a cup supply mechanism 3 for intermittently supplying a sand cup 5 carrying metal sand, and a weighing mechanism 4 for weighing the sand cup 5 and the total weight of the metal sand in the sand cup 5.

[0052] See also Figures 1 to 3 As shown in FIG, the overall schematic structure of the weighing machine in this example is given. In this example, the sand supply mechanism 2, the cup supply mechanism 3, and the weighing mechanism 4 (because the weighing mechanism 4 is below the sand supply mechanism 2 and hidden beside the cup supply mechanism 3, for the needs of coordination between the three and the need to simplify the structure, etc., are Figures 1 to 3 The weighing mechanism 4 is not visible in the overall schematic diagram and will be described in detail in other figures below) and is arranged on the base 1.

[0053] In this example, see Figures 4 to 8 As shown, the sand supply mechanism 2 in this example includes at least one set of sand falling components and a discharger that cooperates with the aforementioned at least one set of sand falling components to discharge the material into the sand cup 5;

[0054] The above-mentioned sand falling assembly includes a metal sand carrying container 211, a metal sand feeder arranged below the metal sand carrying container 211, and the metal sand feeder includes a metal sand feeding guide 2121 arranged below the discharge port of the metal sand carrying container 211, a vibrator 2122 (preferably a direct vibration vibrator) arranged at the bottom of the feeding side of the metal sand feeding guide 2121, and a left blocking piece 2123 and a right blocking piece 2124 respectively arranged on the discharge side of the metal sand feeding guide 2121. The left blocking piece 2123 and the right blocking piece 2124 form a directional flow-limiting gap for metal sand to pass through;

[0055] The above-mentioned discharger includes a sand receiving hopper 221 arranged below the directional flow limiting gap, a discharge valve body 222 which is connected to the discharge port of the sand receiving hopper 221 and has a discharge hole 2221 inside, and a discharge rotating shaft 223 which can rotate relative to the discharge hole 2221 and is used to close or conduct the discharge hole 2221. The discharge rotating shaft 223 is provided with a guide hole 2231 which cooperates with the discharge hole 2221 to achieve conduction of the discharge hole 2221.

[0056] See also Figure 4 or Figure 5 As shown, in this example, there are two groups of sand-falling assemblies and one group of dischargers. The discharge ports of the metal sand feeding guide troughs 2121 of the two groups of sand-falling assemblies are both arranged above the sand receiving hopper 221 of the discharger, so that the metal sand can flow directly into the sand receiving hopper 221 from the directional flow-limiting gap and downward through the discharge through hole 2221 into the sand cup 5.

[0057] Specifically, in this example, the angle between the extension direction of the metal sand feeding guide 2121 and the horizontal direction is less than 5°, so that the speed or amount of the metal sand flowing into the metal sand feeding guide 2121 and introduced into the sand receiving hopper 221 can be controlled. It is specifically configured to tilt the metal sand feeding guide 2121 downward toward the sand receiving hopper 221, but to control the tilt angle so that the metal sand moves toward the sand receiving hopper 221 as much as possible under the operation of the vibrator 2122, and then the discharge speed of the metal sand can be controlled by controlling the vibration frequency of the vibrator 2122, thereby further ensuring the discharge accuracy of the metal sand.

[0058] In this example, see Figure 6 As shown, the left barrier sheet 2123 includes a left barrier sheet fixing portion 21231 fixedly provided on the metal sand feeding guide groove 2121, and a first bendable portion 21232 integrally formed with the left barrier sheet fixing portion 21231. The right barrier sheet 2124 includes a right barrier sheet fixing portion 21241 fixedly provided on the metal sand feeding guide groove 2121, and a second bendable portion 21242 integrally formed with the right barrier sheet fixing portion 21241. The first bendable portion 21232 and the second bendable portion 21232 are The folded portion 21242 constitutes a directional flow-limiting gap. The setting of the first bendable portion 21232 and the second bendable portion 21242 can adjust the opening size of the discharge port, i.e., the directional flow-limiting gap, thereby controlling the discharge speed and making the discharge more uniform, thereby avoiding a large amount of metal sand falling into the sand receiving hopper 221 at a single time, resulting in excessive metal sand in the sand cup 5. Moreover, combined with the feeding method of the vibrator 2122, the uniformity and controllability of the metal sand feeding are well achieved.

[0059] In this example, see Figure 6 As shown, the width of the directional flow-limiting gap gradually decreases from the feeding side to the discharging side; if it is set in the opposite direction, on the one hand, the metal sand may accumulate in the gap formed between the bending portion (i.e., the first bendable portion 21232 and / or the second bendable portion 21242) and the metal sand feeding guide groove 2121; on the other hand, the bending portion may be deformed by the impact of the metal sand during operation, thereby losing the function of controlling the flow of the metal sand.

[0060] In this example, see Figure 1 、 Figure 4 、 Figure 5 and Figure 7As shown, the metal sand carrying container 211 includes a straight barrel 2111 with a cylindrical upper portion, a funnel 2112 with a lower portion being integrally formed with or fixedly connected to the straight barrel 2111, an annular magnet 2113 detachably mounted on the discharge port of the funnel 2112, and a supporting connection boss 2114 formed on the lower end of the straight barrel 2111. A handle 2115 for hand grasping is provided on the outer wall of the straight barrel 2111. The discharge port of the funnel 2112 faces the metal sand feeding guide groove 2121. This arrangement makes it easy to pick up and place, thereby facilitating the addition of metal sand and achieving stable placement. The sand supply mechanism 2 also includes a cylindrical supporting barrel 23 for supporting the metal sand carrying container 211. The metal sand carrying container 211 is mounted on the cylindrical supporting barrel 23 through the supporting connection boss 2114. At least one opening is formed on the cylindrical supporting barrel 23, and the metal sand feeding guide groove 2121 passes through one opening.

[0061] Specifically, the annular magnet 2113 in this example can be placed on the discharge port of the funnel 2112 when the metal sand carrying container 211 is picked up and metal sand is added, and the metal sand can be sealed in the metal sand carrying container 211 by magnetic force; and when the metal sand carrying container 211 is placed on the cylindrical support barrel 23 and the material is discharged, it can be taken out manually (for example, it can be operated through other openings on the cylindrical support barrel 23), and the metal sand can flow out from the inside under the action of gravity; at the same time, in this example, the discharge port of the funnel 2112 is close to the bottom of the metal sand feeding guide groove 2121 and a certain gap is reserved for the metal sand to flow out. The size of this gap is such that when the vibrator 2122 is not working, the metal sand can automatically block the discharge port when it is stationary, and when the vibrator 2122 is working, the existing metal sand can continue to be discharged after it moves away.

[0062] In this example, see Figure 6 and Figure 8As shown, the blanking rotating shaft 223 passes through the blanking through hole 2221, and the extension direction of the blanking rotating shaft 223 is perpendicular to the extension direction of the blanking through hole 2221, and the diameter of the blanking rotating shaft 223 is larger than the diameter of the blanking through hole 2221; the above-mentioned setting method is to make the blanking rotating shaft 223 rotate under the drive of the blanking rotating shaft driving component 224224 and realize the conduction and closing of the blanking through hole 2221 during the rotation, and a guide hole 2231 is provided on the blanking rotating shaft 223, that is, when the blanking rotating shaft 223 is rotated to the point where the guide hole 2231 coincides with the blanking through hole 2221, the purpose of blanking is achieved, and when the blanking rotating shaft 223 is rotated to other positions, for example, when the guide hole 2231 and the blanking through hole 2221 half coincide, the blanking is achieved. The speed slows down significantly. When the unloading rotating shaft 223 continues to rotate and rotates until the guide hole 2231 is completely offset from the unloading through hole 2221, the purpose of closing the unloading through hole 2221 is achieved. This setting combines the vibrator 2122 to vibrate the unloading and the left barrier plate 2123 and the right barrier plate 2124 to control the unloading. It is an organic combination of at least three controls of the unloading speed, uniformity and controllability. It realizes that the sand supply mechanism 2 can stop the feeding in a timely and accurate manner based on the signal given by the weighing mechanism 4 during the process of releasing the metal sand, thereby ensuring that the weight of the metal sand in the sand cup 5 meets expectations. The weighing machine in this example can achieve an error of the weight of the metal sand in each sand cup 5 within ±3g, thereby ultimately ensuring the stability and excellence of the spinning quality.

[0063] In this example, see Figures 9 to 18 As shown, the cup supply mechanism 3 includes a cup storage support 31 with a sand cup drop opening 311, a cup storage bucket 32 arranged on the cup storage support 31 and connected to the sand cup drop opening 311, a limit assembly for allowing or preventing the sand cup 5 in the cup storage bucket 32 from falling, a sand cup carrying plate 34 rotatably arranged below the sand cup drop opening 311 and performing intermittent indexing motion, and a cam divider 35 for driving the sand cup carrying plate 34 to move; wherein the limit assembly includes a limiter 331 arranged on one side of the cup storage bucket 32 and used to make the second sand cup counted from bottom to top in the cup storage bucket 32 tend to remain fixed, a sand cup blocking plate 332 cooperating with the sand cup drop opening 311 to allow or prevent the first sand cup counted from bottom to top in the cup storage bucket 32 from falling, and the sand cup blocking plate 332 is rotatably arranged below the cup storage support 31.

[0064] In this example, if Figure 9 As shown, the portion below the cup storage support 31 of the cup supply mechanism 3 is almost surrounded by the housing 39 to prevent external debris from affecting the operation of various components.

[0065] Specifically, see Figure 9 or Figure 10 As shown, the cup storage barrel 32 has 5; see Figure 13As shown, the sand cup blocking plate 332 includes a rotating support body 3321 and a plurality of sand cup blocking plates 3322 fixedly connected to or integrally formed with the rotating support body 3321. The sand cup drop opening 311 and the sand cup blocking plates 3322 have a number corresponding to the number of the cup storage barrels 32, and the sand cup receiving portion 8 is arranged at a corresponding position in the cup supply mechanism 3. For details, see Figure 13 As shown in the matching diagram, when the sand cup blocking plate 332 is rotated, the sand cup blocking plate 3322 is turned to coincide with the sand cup drop opening 311 (as shown in FIG. Figure 13 When the sand cup baffle 3322 and the sand cup drop port 311 are completed (as shown in the left figure), the sand cup 5 is blocked and falls; Figure 13 As shown in the right figure), the sand cup 5 can be allowed to fall onto the sand cup carrier plate 34, and then the cam driving component 351 (which can be a stepping motor, etc.) drives the cam divider 35 (using six stations to achieve intermittent indexing operation) to move. The movement of the cam divider 35 can drive the sand cup carrier plate 34 to perform intermittent indexing movement, that is, it rotates a certain angle each time. This angle can make a sand cup close to the sand cup receiving position 8 rotate to the sand cup receiving position 8 for sand receiving operation. After several sand receiving operations, 5 times in this example, it is detected that there is no sand cup 5 on the sand cup carrier plate 34, and the next cup dropping action is performed.

[0066] In this example, the stopper 331 is a cylinder. Figures 11 to 12 As shown, the cylinder is arranged on one side of the cup storage barrel 32 and tends to press the second sand cup against the inner wall of the cup storage barrel 32; the cup supply mechanism 3 also includes a proximity switch arranged at the lower part of the cup storage barrel 32 and used to detect whether there is a sand cup 5 at the bottom position in the cup storage barrel 32.

[0067] Furthermore, in this example, see Figure 14 The diagram of the sand cup 5 falling and being blocked in the cup storage barrel 32 is shown. When the sand cup blocking plate 332 is turned open and the sand cup 5 is allowed to fall, the first sand cup (i.e. Figure 14 The "No. 1 cup" in the middle can fall, and the second sand cup (that is, the "No. Figure 14 During this process, the "No. 2 cup" will be pressed against the inner wall of the cup storage barrel 32 by the limiter 331 and tend to remain fixed. After the cup dropping operation is completed, the proximity switch 36 detects that there is no sand cup 5 at the bottom position of the cup storage barrel 32, and then the limiter 331, i.e., the cylinder, releases the "No. 2 cup" and makes it fall to the position of the "No. 1 cup". The sand cup 5 above moves down one position in turn, and then waits for the next cup dropping operation, and the cycle continues.

[0068] In this example, see Figures 10 to 12 、 Figure 15As shown, the sand cup carrier plate 34 includes a carrier plate body 341, a mounting hole 342 formed in the middle of the carrier plate body 341, and a plurality of sand cup support bosses 343 formed on the peripheral side of the carrier plate body 341. The mounting hole 342 cooperates with the cam divider 35. The cup supply mechanism 3 also includes a plurality of sand cup guide support plates 37 arranged on the carrier plate body 341 and arranged on both sides of the sand cup support boss 343. The sand cup guide support plates 37 can make the sand cup 5 fall accurately onto the sand cup support boss 343 to avoid skewing and affecting the operation of the mechanism.

[0069] See also Figures 16 to 18 As shown, the cup supply mechanism 3 also includes a cup pushing assembly 38, which includes a cup pushing block 381 disposed between the sand cup carrying plate 34 and the cup storage support 31 and used to push the sand cup 5 to move, and a cup pushing driving component 382 used to drive the cup pushing block 381 to move in the horizontal direction. The purpose is to enable the sand cup 5 to automatically be pushed into the sand cup tray 7 after carrying a set amount of metal sand. After a certain amount of sand cups 5 are placed, a new sand cup tray 7 can be replaced. For details, see Figure 16 As shown, the sand cup tray 7 in this example is tilted upward from left to right, so that the sand cup 5 can slide to a lower place after being pushed to the edge of the sand cup tray 7, and then the cup pushing block 381 does not need to have a long length, and the sand cup 5 after carrying a certain amount of metal sand can be automatically collected in the sand cup tray 7.

[0070] Also, in this case, see Figure 16 As shown, the cup feeding mechanism 3 also includes a discharge position cup measuring sensor 9, which is arranged together with the cup pushing assembly 38 for detecting whether there is a sand cup 5 at the discharge position. Only when the discharge position cup measuring sensor 9 detects the presence of a sand cup 5 at the discharge position will the material be discharged. If the sand cup 5 is not detected, the sand cup supporting plate 34 will be driven to rotate a certain angle (or one working position). If it is detected, the material is discharged. If it is still not detected, the rotation will continue. After rotating for about one circle, if the sand cup 5 is still not detected, the proximity switch 36 is used to detect whether there is a sand cup 5 at the above-mentioned "cup No. 1" position. If so, the cup dropping operation will be performed.

[0071] Specifically, see Figure 18 As shown, the side of the cup pushing block 381 used to push the sand cup 5 is V-shaped as a whole, and the opening of one side of the V-shape faces the sand cup 5. This arrangement can ensure that the sand cup 5 can be pushed in a direction without being deflected or tilted in the circumferential direction.

[0072] See also Figures 19 to 20As shown, the weighing mechanism 4 in this example includes a sand cup lifting platform 41, a weighing sensor 42, a weighing sensor supporting platform 43, and a sand cup lifting driving component 44, which are arranged in sequence from top to bottom below the discharge valve body 222. The sand cup lifting platform 41 is pressed on the weighing sensor 42, and the weighing sensor 42 is pressed on the weighing sensor supporting platform 43. The weighing sensor supporting platform 43 is connected to the output end of the sand cup lifting driving component 44.

[0073] Specifically, the weighing mechanism 4 in this example is when the sand cup 5 is moved to the material discharge position (i.e. Figure 13 After the sand cup receives the sand 8 as shown, the sand cup lifting drive component 44 works to lift the weighing sensor support platform 43, thereby driving the weighing sensor 42 and the sand cup lifting platform 41 to move upward, and lift the sand cup 5. After lifting, the sand supply mechanism 2 above, specifically the direct discharge valve body 222, the discharge through hole 2221 and the guide hole 2231 of the discharge rotating shaft 223 are rotated to coincide, and then the material is discharged, and the vibrator 2122 also starts working almost synchronously; when the weight of the metal sand in the sand cup 5 reaches the set value, the discharge is stopped, and then the sand cup lifting drive component 44 slowly resets, that is, drives the sand cup 5 to reset, and finally the sand cup 5 carrying the metal sand can be pushed into the sand cup tray 7.

[0074] In this example, see Figure 20 As shown, the upper end surface of the sand cup lifting platform 41 is convex upward in the middle.

[0075] In this example, see Figures 21 to 22 As shown, the metal sand weighing machine also includes a sand cup 5, including a cup body 51 and a sand guide boss 52 arranged in the middle of the bottom inside the cup body 51 and extending in the up and down directions. The bottom outside the cup body 51 is formed with an upwardly concave groove 53, and the groove 53 is adapted to the protrusion of the sand cup lifting platform 41, thereby ensuring that it always remains stable during the lifting process; wherein, the setting of the sand guide boss 52 can make the metal sand placed in the sand cup 5 be dispersed around the sand cup 5 during the discharge process, rather than being accumulated in the middle to form a conical sand pile, resulting in the occurrence of undesirable situations such as overflowing from the sand cup 5.

[0076] In this example, the metal sand weighing machine for chemical fiber production also includes a control system 6, which is communicated with the vibrator 2122, the unloading rotating shaft drive component 224, the sand cup blocking disk drive component 3323, the limiter 331 (cylinder), the cam drive component 351, the proximity switch 36, the push cup drive component 382, the sand cup lifting drive component 44, the weighing sensor 42, the unloading level measuring cup sensor 9, etc., so as to realize terminal control.

[0077] In summary, the present invention is based on the situation that the existing automatic discharging device is not suitable for the metal sand discharging of the present invention. Specifically, for metal sand, the discharging process is not controllable and the precision is insufficient, and it is difficult to ensure the stability and controllability of the weight of each metal sand discharge, and the error is large; the specific sand supply mechanism provided by the present invention, through the combination of hierarchical multi-level control, can ensure that the weighing error each time is within ±3g or even almost error-free, thereby ensuring the spinning quality of the subsequent process, and is suitable for the automatic and controllable discharging of single metal sand with larger weight.

[0078] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A sand supply mechanism for releasing metal sand used in a chemical fiber production process, characterized in that: The sand supply mechanism includes at least one set of sand shaking components and a discharger that cooperates with the at least one set of sand shaking components to discharge the material into the sand cup; The shakeout assembly includes a metal sand carrying container, a metal sand feeder disposed below the metal sand carrying container, the metal sand feeder including a metal sand feeding chute disposed below the discharge port of the metal sand carrying container, a vibrator disposed at the bottom of the feeding side of the metal sand feeding chute, and left and right blocking plates respectively disposed on the discharge side of the metal sand feeding chute, the left and right blocking plates forming a directional flow-limiting gap for metal sand to pass through; The metal sand carrying container includes a cylindrical straight barrel at the top, a funnel at the bottom that is integrally formed with or fixedly connected to the straight barrel, and a ring magnet detachably mounted on a discharge port of the funnel, wherein the discharge port of the funnel faces the metal sand feeding guide groove; When adding metal sand to the metal sand carrying container, the annular magnet is sleeved on the discharge port of the funnel, and when the metal sand carrying container is discharged, the annular magnet is removed from the discharge port of the funnel; The discharge port of the funnel is close to the bottom of the metal sand feeding guide trough and a certain gap is reserved for the metal sand to flow out. The size of the gap satisfies the following conditions: when the vibrator is not working and the metal sand is stationary, the discharge port can be automatically blocked; when the vibrator is working, the existing metal sand can be moved away and the discharge can continue; The discharger includes a sand receiving hopper arranged below the discharge side of the metal sand feeding guide trough, a discharge valve body connected to the discharge port of the sand receiving hopper and having a discharge hole formed therein, a discharge rotating shaft capable of rotating relative to the discharge hole and used to close or open the discharge hole, and a guide hole formed on the discharge rotating shaft to cooperate with the discharge hole to achieve the discharge hole being open; The blanking rotating shaft passes through the blanking through hole, the extending direction of the blanking rotating shaft is perpendicular to the extending direction of the blanking through hole, and the diameter of the blanking rotating shaft is larger than the diameter of the blanking through hole; The angle between the extension direction of the metal sand feeding guide groove and the horizontal direction is less than 5°, and the metal sand feeding guide groove is inclined downward toward the sand receiving hopper.

2. The sand supply mechanism for releasing metal sand in the chemical fiber production process according to claim 1, characterized in that: The left barrier piece includes a left barrier piece fixing portion fixed on the metal sand feeding guide trough, and a first bendable portion integrally formed with the left barrier piece fixing portion; the right barrier piece includes a right barrier piece fixing portion fixed on the metal sand feeding guide trough, and a second bendable portion integrally formed with the right barrier piece fixing portion; the first bendable portion and the second bendable portion constitute the directional flow limiting gap.

3. The sand supply mechanism for releasing metal sand in the chemical fiber production process according to claim 2, characterized in that: The width of the directional flow-limiting gap gradually decreases from the feeding side to the discharging side.

4. The sand supply mechanism for releasing metal sand in the chemical fiber production process according to claim 1, characterized in that: A handle for hand gripping is provided on the outer wall of the straight barrel.

5. The sand supply mechanism for releasing metal sand in the chemical fiber production process according to claim 1, characterized in that: The sand supply mechanism further includes a cylindrical support barrel for supporting the metal sand carrying container. The metal sand carrying container further includes a support connection boss formed at the lower end of the straight barrel. The metal sand carrying container is mounted on the cylindrical support barrel via the support connection boss.

6. The sand supply mechanism for releasing metal sand used in the chemical fiber production process according to claim 5, characterized in that: At least one opening is formed on the cylindrical support barrel, and the metal sand feeding guide groove passes through the opening.

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