Material collecting device and melt index instrument

Abstract

The utility model provides a material collecting device and a melt index instrument. The material collecting device comprises a mounting base, a connecting piece, a material receiving rotating disc and a protective cover. The connecting piece is installed on the installation base and can rotate relative to the installation base. A plurality of material cavities are formed in the upper side of the material receiving rotary disc, and the material receiving rotary disc is in lap joint with the connecting piece. The upper end of the shield is provided with a feeding port, and the lower end of the shield is provided with a discharging port. The material receiving rotary disc is configured to rotate along with the connecting piece so that one material cavity can rotate to be aligned with the discharging opening. According to the technical scheme, the material collecting device can be installed on a machine body of the melt index instrument for use, samples fall down from the discharging port after falling into the feeding port of the protective cover, the samples rotate to the material cavity through the material receiving rotary disc to be aligned with the discharging port, the samples falling down from the discharging port of the protective cover can fall into the material cavity, and therefore the samples can be collected conveniently. Therefore, the purpose of collecting samples is achieved. Due to the fact that the material receiving rotary disc is in lap joint with the connecting piece, the material receiving rotary disc can be conveniently separated from the connecting piece, and the material receiving rotary disc can be detached.

Description

Technical Field

[0001] This application relates to the field of melt indexers, and more particularly, to a material collection device and a melt indexer. Background Art

[0002] When using a melt indexer to obtain a sample, the sample falls from its discharge port. Since the sample has a high temperature when it falls from the discharge port, a receiving turntable needs to be arranged below the discharge port to collect the sample, and then the receiving turntable is removed to transfer the sample.

[0003] In practice, multiple sets of different samples may be required. Therefore, during the process of obtaining samples, the receiving turntable needs to be rotated so that different sets of samples fall on different areas of the receiving turntable. This also brings the problem that it is difficult to remove the receiving turntable. Summary of the Utility Model

[0004] The purpose of this application is to provide a material collection device and a melt indexer, which facilitate the disassembly of the receiving turntable.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a material collection device, including a mounting base, a connecting member, a receiving turntable, and a protective cover. The connecting member is installed on the mounting base and can rotate relative to the mounting base. A plurality of material cavities are arranged on the upper side of the receiving turntable, and the receiving turntable is lapped on the connecting member. The protective cover is arranged above the receiving turntable, and the upper end of the protective cover is the feed port and the lower end is the discharge port. The receiving turntable is configured to rotate with the connecting member so that one of the material cavities rotates to align with the discharge port.

[0007] The material collection device provided in the above technical solution can be installed on the body of the melt indexer for use. After the sample falls into the feed port of the protective cover and then falls from the discharge port, by rotating the receiving turntable until the material cavity aligns with the discharge port, the sample falling from the discharge port of the protective cover can fall into the material cavity, thereby achieving the purpose of collecting the sample. Since the receiving turntable and the connecting member are lapped, it is convenient to separate the receiving turntable from the connecting member to disassemble the receiving turntable.

[0008] In some alternative embodiments, a groove is arranged on the lower surface of the receiving turntable, and the connecting member has a protrusion that cooperates with the groove; the groove and the protrusion cooperate so that the receiving turntable can rotate with the connecting member.

[0009] In the above technical solution, by the cooperation of the groove on the lower surface of the receiving turntable and the protrusion of the connecting member, it is convenient for the connecting member to drive the receiving turntable to rotate.

[0010] In some alternative embodiments, the groove includes a first strip-shaped groove and a second strip-shaped groove located in the same plane; the connecting member includes a first rib and a second rib; the first rib is fitted and connected within the first strip-shaped groove, and the second rib is fitted and connected within the second strip-shaped groove.

[0011] In the above technical solution, the groove includes a first strip-shaped groove and a second strip-shaped groove, and the first rib and the second rib in the connecting member are respectively fitted with the first groove and the second groove, which can make the contact surface between the connecting member and the material receiving turntable larger, so as to better drive the material receiving turntable to rotate.

[0012] In some alternative embodiments, the mounting base includes a mounting plate and a first bending portion and a second bending portion connected to the mounting plate. The first bending portion and the second bending portion are both provided with fixing holes for detachably fixing the mounting base to the machine body through fixing members.

[0013] In some alternative embodiments, the free ends of the first bending portion and the second bending portion are both arranged parallel to the mounting plate, and the fixing holes are threaded through holes; the axis of the fixing holes is perpendicular to the mounting plate; in the direction perpendicular to the mounting plate, the projection of the fixing holes is located on the mounting plate.

[0014] In the above technical solution, the mounting base can be fixed to the machine body by clamping the machine body with the free ends of the first bending portion, the second bending portion and the mounting plate, and then screwing a set screw into the fixing hole.

[0015] In some alternative embodiments, the mounting base is connected with a turntable, and the rotating portion of the turntable is connected with the connecting member to drive the connecting member to rotate.

[0016] In the above technical solution, the connecting member is driven to rotate by the turntable, which is convenient for controlling the rotation process.

[0017] In some alternative embodiments, a bracket is further included. The bottom of the bracket is mounted on the mounting base, the top of the bracket protrudes upward, and the shield is lapped on the top of the bracket; the vertical distance between the discharge port and the material receiving turntable is 0 to 15 mm.

[0018] In the above technical solution, the vertical distance between the discharge port and the material receiving turntable is 0 to 15 mm, which can facilitate the sample to fall into the material cavity of the material receiving turntable from the discharge port. The shield is arranged on the top of the bracket in a lapping manner, which can facilitate the disassembly of the shield and then the disassembly of the material receiving turntable.

[0019] In some alternative embodiments, the bracket includes two struts. Each strut includes a horizontal section, and the horizontal sections of the two struts are arranged in parallel. Two opposite sides of the shield lap on the horizontal sections under the action of gravity.

[0020] In the above technical solution, two opposite sides of the shield lap on the horizontal sections under the action of gravity, which can achieve a good supporting effect on the shield.

[0021] In some alternative embodiments, a Teflon layer is provided on the inner wall of the shield; the shield is a metal structural member.

[0022] In the above technical solution, the Teflon layer provided on the inner wall of the shield has the characteristics of high temperature resistance, smooth surface, and low material activity. It can withstand the high temperature of the sample, facilitate the falling of the sample, and does not react with the sample. Since the shield is a metal structural member, it can quickly transfer the heat from the sample and continue to transfer the heat to the surrounding environment.

[0023] In a second aspect, an embodiment of the present application provides a melt indexer, which includes a machine body and the material collection device provided in the first aspect; the installation base is connected to the machine body, the machine body has a blanking port, and the feeding port is aligned with the blanking port. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the machine body of the melt indexer;

[0026] Figure 2 It is a schematic diagram of the melt indexer provided by the embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of the material collection device provided by the embodiment of the present application;

[0028] Figure 4 It is a structural diagram of the receiving turntable provided by the embodiment of the present application from the first perspective;

[0029] Figure 5 It is a structural diagram of the receiving turntable provided by the embodiment of the present application from the second perspective;

[0030] Figure 6 It is a structural diagram of the shield provided by the embodiment of the present application from the first perspective;

[0031] Figure 7 Structural diagram of the shield provided by the embodiment of the present application from the second perspective;

[0032] Figure 8 Structural diagram of the mounting base provided by the embodiment of the present application from the first perspective;

[0033] Figure 9 Structural diagram of the mounting base provided by the embodiment of the present application from the second perspective;

[0034] Figure 10 Structural diagram of the connecting piece provided by the embodiment of the present application;

[0035] Figure 11 Structural diagram of the support rod provided by the embodiment of the present application.

[0036] Icons: 100 - body; 200 - material collection device; 210 - mounting base; 211 - mounting plate; 212 - first bending part; 213 - second bending part; 214 - fixing hole; 220 - connecting piece; 221 - first rib; 222 - second rib; 230 - receiving turntable; 231 - material cavity; 232 - first strip-shaped groove; 233 - second strip-shaped groove; 240 - shield; 241 - feeding port; 242 - discharging port; 243 - flange; 250 - turntable; 260 - support rod; 261 - horizontal section; 262 - vertical section. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0039] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present application. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0041] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] The present application provides a melt indexer, as Figures 1 to 3 shown, including a body 100 and a material collection device 200 installed on the body 100 for collecting the samples provided by the body 100.

[0044] The body 100 has a blanking port, and the samples provided by the body 100 fall from the blanking port. The material collection device 200 includes a shield 240 and a receiving turntable 230 provided below the shield 240. As Figure 6 shown in Figure 7 the shield 240 has a feed port 241 at the upper end and a discharge port 242 at the lower end. As Figure 4 shown in Figure 3The direction indicated by the arrow in the figure passes through the shield 240). It is not difficult to understand that both the feed inlet 241 and the discharge outlet 242 of the shield 240 are annular structures, and a channel connecting the feed inlet 241 and the discharge outlet 242 is formed inside the shield 240; among them, the feed inlet 241 and the discharge outlet 242 can be circular annular structures, rectangular annular structures, or other shapes.

[0045] As Figure 7 shown in Figure 8 the figure, the material collection device 200 further includes a mounting base 210. The mounting base 210 is connected to the frame, and both the shield 240 and the receiving turntable 230 are carried on the mounting base 210. The receiving turntable 230 is rotatably arranged so that the material cavities 231 at different positions on the receiving turntable 230 are aligned with the discharge outlet 242 of the shield 240. In some embodiments, the receiving turntable 230 includes a housing with an open upper side, and a plurality of partitions evenly distributed along the circumference are arranged inside the housing. The space formed between two adjacent partitions is the material cavity 231 for accommodating samples.

[0046] In some embodiments, in order to facilitate the disassembly of the receiving turntable 230, the mounting base 210 is connected with a connecting member 220. The connecting member 220 can rotate relative to the mounting base 210; the receiving turntable 230 is lapped on the connecting member 220, and during the rotation of the connecting member 220, the receiving turntable 230 rotates together with the connecting member 220. Herein, the receiving turntable 230 being lapped on the connecting member 220 means that the receiving turntable 230 remains in contact with the connecting member 220 under the action of gravity, and there is no connection between the connecting member 220 and the receiving turntable 230 through the connecting member 220. Therefore, it is not difficult to understand that when it is necessary to transfer the receiving turntable 230 to detect the sample, only the receiving turntable 230 needs to be picked up from the connecting member 220, which is convenient to operate. Further, after the receiving turntable 230 is lapped on the connecting member 220, a certain gap can be formed between the receiving turntable 230 and the mounting base 210 to avoid the contact between the receiving turntable 230 and the mounting base 210, thereby reducing the resistance of the receiving turntable 230 to rotate.

[0047] In order to achieve the rotation of the receiving turntable 230 together with the connecting member 220, in some embodiments, as Figure 5As shown, a groove is provided on the lower surface of the material receiving turntable 230, and the connecting member 220 has a protruding portion that cooperates with the groove. Through the cooperation between the protruding portion and the groove, the overlap between the material receiving turntable 230 and the connecting member 220 is realized, so that the material receiving turntable 230 can move together with the connecting member 220. Among them, the cooperation between the protruding portion and the groove includes clearance fit and transition fit, and can also include interference fit. It is not difficult to understand that the cross-section of the protruding portion is a non-circular cross-section, which can specifically be a square, an ellipse, etc. Among them, the cross-section is a cross-section perpendicular to the rotation axis of the connecting member 220. Preferably, the rotation axis of the connecting member 220 passes through the protruding portion, so that when the connecting member 220 drives the material receiving turntable 230 to rotate, the force on the connecting member 220 is more balanced.

[0048] In some embodiments, such as Figure 5 As shown, the groove on the lower surface of the material receiving turntable 230 includes a first strip-shaped groove 232 and a second strip-shaped groove 233 located on the same plane; as Figure 10 As shown, the protruding portion of the connecting member 220 includes a first convex strip 221 and a second convex strip 222. The first convex strip 221 is fitted and connected in the first strip-shaped groove 232, and the second convex strip 222 is fitted and connected in the second strip-shaped groove 233. It is not difficult to understand that the convex strip is a strip-shaped structure, which can increase the contact area between the connecting member 220 and the material receiving turntable 230, and when the connecting member 220 drives the material receiving turntable 230 to rotate, the lever arm of the acting force of the connecting member 220 on the material receiving turntable 230 is larger, so that the connecting member 220 can more easily drive the material receiving turntable 230 to rotate. In Figure 10 In the shown embodiment, the first convex strip 221 and the second convex strip 222 in the connecting member 220 intersect, so that the connecting member 220 forms a cross-shaped structure. The number of strip-shaped grooves and convex strips is not limited in this application. In other embodiments, the number of grooves on the lower surface of the material receiving turntable 230 can also be three, four, five, etc.

[0049] In some other embodiments, it can also be that a protrusion is provided on the lower surface of the connecting turntable and a groove is provided on the connecting member 220. It is not difficult to understand that the method of providing the protrusion on the lower surface of the material receiving turntable 230 can make the material receiving turntable 230 be placed on other planes more stably.

[0050] In addition to the method of realizing the rotation of the material receiving turntable 230 together with the connecting member 220 through the mutually cooperating groove and protrusion structures, in some embodiments, the material receiving turntable 230 can also rotate together with the connecting member 220 through the friction force between the material receiving turntable 230 and the connecting member 220. For example, the surfaces of the connecting turntable and the connecting member 220 in contact with each other are both rough surfaces. However, the method of realizing the rotation of the material receiving turntable 230 together with the connecting member 220 through the mutually cooperating groove and protrusion structures can more precisely control the rotation position of the material receiving turntable 230.

[0051] Further, as Figure 2 shown, a turntable 250 is further provided on the mounting base 210. The rotating part of the turntable 250 is connected to the connecting member 220 to drive the connecting member 220 to rotate. Among them, the turntable 250 can adopt existing devices such as an existing hollow rotary platform, or can also adopt devices such as a motor, as long as it has a fixed part and a rotating part that can rotate relative to each other; the fixed part in the turntable 250 is connected to the mounting base 210, and the rotating part drives the connecting member 220 to rotate. By adopting an existing device such as a hollow rotary platform to drive the connecting member 220 to rotate, the rotation process can be better controlled. For example, the rotation speed, rotation angle, etc. of the connecting member 220 can be better controlled, so that the receiving turntable 230 can switch the material cavities 231 at different positions to align with the discharge port 242 of the shield 240 according to preset requirements.

[0052] Of course, in some embodiments, the connecting member 220 can also be only rotatably connected to the mounting base 210. After the receiving turntable 230 is lapped on the connecting member 220, the operator can rotate the receiving turntable 230 so that the material cavity 231 of the receiving turntable 230 rotates to a position corresponding to the discharge port 242 of the shield 240. In this embodiment, the connecting member 220 and the receiving turntable 230 can also be positioned by the cooperation of a groove and a protrusion, effectively avoiding the situation that the receiving turntable 230 is displaced during rotation.

[0053] Those skilled in the art should not have difficulty understanding in combination with the content of this application that the sample falls into the material cavity 231 of the receiving turntable 230 under the action of gravity. The receiving turntable 230 rotates in a horizontal plane, and the rotation axis of the receiving turntable 230 and the rotation axis of the connecting member 220 should be nearly parallel to the vertical direction.

[0054] In some embodiments, in order to make the sample fall more accurately into the corresponding material cavity 231, the distance between the discharge port 242 of the shield 240 and the receiving turntable 230 in the vertical direction is 0 to 15 mm. Specifically, it can be 1 mm, 5 mm, 10 mm, and 15 mm, etc. Within this distance range, the gap between the discharge port 242 of the shield 240 and the receiving turntable 230 is small, and it is difficult for the sample to pass through the gap between the discharge port 242 and the receiving turntable 230, thus ensuring that the sample falls more accurately into the corresponding material cavity 231.

[0055] Further, in an embodiment where the distance between the discharge port 242 of the shield 240 and the receiving turntable 230 is small, the shield 240 is also arranged in a lapping manner to facilitate the disassembly of the shield 240, and then the receiving turntable 230 can be disassembled. In some embodiments, the mounting base 210 is connected with a bracket, and the top of the bracket protrudes upward. The shield 240 is lapped on the top of the bracket. It is not difficult to understand that the top of the bracket protrudes upward, so that the top of the bracket has a certain distance from the mounting base 210, enabling the bracket to be supported above the mounting base 210.

[0056] Further, the bracket includes two independent struts 260, as Figure 11 shown. The strut 260 includes a horizontal section 261 and a vertical section 262 which are connected to each other. One end of the vertical section 262 is connected to the mounting base 210, and the other end protrudes upward so that the horizontal section 261 is at a higher position. The shield 240 is lapped on the horizontal sections 261 of the two struts 260. Further, the horizontal sections 261 of the two struts 260 are arranged in parallel. The two opposite sides of the shield 240 are lapped on a horizontal section 261 under the action of gravity respectively. It is not difficult to understand that the two struts 260 support the shield 240 from the two opposite sides of the shield 240, making the shield 240 can be supported more stably. In some other embodiments, the two struts 260 included in the bracket can be connected to each other, and the bracket can also be other forms of integral structures, as long as the shield 240 can be lapped on the bracket. In Figure 11 the shown embodiment, the strut 260 is L-shaped. Again Figure 6 and Figure 7 in the shown embodiment, a flange 243 protruding outward toward the feed port 241 is provided at the upper end of the shield 240. The flanges 243 located on the two opposite sides of the shield 240 are lapped on the horizontal sections 261 of the struts 260.

[0057] In some embodiments, the shield 240 is a metal structural member. The excellent heat conduction performance of the metal can not only quickly transfer the heat from the material, but also continue to transfer the heat to the surrounding environment. When the sample contacts the shield 240 made of metal material, the heat of the sample can be quickly taken away, without setting up existing devices such as fans for heat dissipation, reducing the vibration brought to the material collection device 200, and enabling the sample to fall into the preset material cavity 231 more accurately. Further, a Teflon layer can be provided on the inner wall of the shield 240. Herein, the inner wall of the shield 240 is the wall body in contact with the channel connecting the discharge port 242 and the feed port 241. The Teflon layer can be a Teflon tape adhered to the inner wall of the shield 240, or a coating provided on the inner wall of the shield 240 by means of spraying or deposition. Teflon has excellent heat resistance, corrosion resistance and a low friction coefficient, ensuring that the material can slide more easily.

[0058] In some embodiments of the present application, the mounting base 210 is mounted on the protruding part of the body 100. The mounting base 210 includes a mounting plate 211, a first bending part 212 and a second bending part 213 connected to the mounting plate 211. Among them, the mounting plate 211 serves to support other structures in the material collection device 200. For example, structures such as brackets can be mounted on the mounting plate 211. The first bending part 212 and the second bending part 213 connected to the mounting plate 211 form a structure that can cooperate with the body 100, thereby realizing the connection with the body 100. In Figure 9 In the shown embodiment, the mounting plate 211 is a plate-like structural member with an approximate square shape, and the first bending part 212 and the second bending part 213 are respectively connected to two adjacent sides of the mounting plate 211. Further, fixing holes 214 can be provided in the first bending part 212 and the second bending part 213, and fixing members are arranged in the fixing holes 214 to realize the fixation with the body 100.

[0059] Such as Figure 8 As shown, in some embodiments, both the first bending part 212 and the second bending part 213 are L-shaped structural members. Both the first bending part 212 and the second bending part 213 include a connecting end and a free end. Among them, the connecting end is connected to the mounting plate 211, and the free ends are arranged parallel to the mounting plate 211. The space between the mounting plate 211 and the free ends is used to accommodate the protruding structure of the body 100. That is, the mounting plate 211 and the free ends are respectively located on the upper and lower sides of the protruding structure of the body 100. Then, the mounting base 210 and the protruding structure of the body 100 are fixed by the fixing members arranged in the fixing holes 214. Further, the fixing holes 214 are threaded through holes, the axes of the fixing holes 214 are perpendicular to the mounting plate 211, and the fixing members arranged in the fixing holes 214 are set screws. By tightening the set screws against the body 100 located between the free end and the mounting plate 211, the mounting base 210 can be fixed to the body 100. Further, in the direction perpendicular to the mounting plate 211, the projection of the fixing hole 214 is located on the mounting plate 211.

[0060] The method for obtaining samples using the melt indexer provided in the embodiments of the present application is as follows: Set the rotation interval time of the material receiving turntable 230 according to the cutting time set by the melt indexer; for example, when the melt indexer is set under a 5 kg weight pressure, a group of samples is cut every 30 s, and a total of 10 groups of samples are cut; then the turntable 250 can also be set to drive the material receiving turntable 230 to rotate once every 30 s, and the rotation angle each time is related to the number of material cavities 231. For example, in the embodiment where the number of material cavities 231 is 12, the rotation angle of the material receiving turntable 230 each time is 30°; the samples cut by the melt indexer each time will slide down along the inner wall of the shield 240 into the material cavity 231 of the material receiving turntable 230. At the same time, before the next cutting, the material receiving turntable 230 will complete the rotation, rotate away the chamber that has collected the samples, and another new chamber without samples will be realigned with the discharge port 242 of the shield 240 to wait for the samples to fall.

[0061] The material collection device 200 provided in the present application occupies a small area and has a relatively light overall weight. There is no need to install complex electrical and mechanical devices, and only a small turntable 250 is required to realize the transformation of the electrical part, with a relatively low cost. It can be installed in cooperation with the melt indexer without interference, and the size and height of the design structure can also be changed according to the structure of different melt indexers for adaptation; for example, change the shape of the feed port 241 of the shield 240 to avoid the cutter for cutting samples in the machine body 100.

[0062] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A material collecting device, characterized in that: include: Install the base, A connecting piece installed on the mounting base, the connecting piece can rotate relative to the mounting base, and a material receiving turntable overlapped on the connecting piece, wherein a plurality of material cavities are arranged on the upper side of the material receiving turntable, A shield is arranged above the receiving turntable, wherein the upper end of the shield is a feed inlet and the lower end is a discharge outlet. The material receiving turntable is configured to rotate with the connecting member so that one of the material cavities rotates to align with the material discharge port.

2. The material collecting device according to claim 1, characterized in that: The lower surface of the material receiving turntable is provided with a groove, and the connecting piece has a protrusion matched with the groove; the groove and the protrusion are matched so that the material receiving turntable can rotate with the connecting piece.

3. The material collecting device according to claim 2, characterized in that: The groove includes a first strip groove and a second strip groove located in the same plane; the connecting member includes a first convex strip and a second convex strip; the first convex strip is connected in cooperation with the first strip groove, and the second convex strip is connected in cooperation with the second strip groove.

4. The material collecting device according to claim 1, characterized in that: The mounting base includes a mounting plate and a first bending portion and a second bending portion connected to the mounting plate. The first bending portion and the second bending portion are both provided with fixing holes for detachably fixing the mounting base to the machine body through fixing members.

5. The material collecting device according to claim 4, characterized in that: The free end of the first bending portion and the free end of the second bending portion are both arranged parallel to the mounting plate, and the fixing hole is a threaded through hole; the axis of the fixing hole is perpendicular to the mounting plate; in the direction perpendicular to the mounting plate, the projection of the fixing hole is located on the mounting plate.

6. The material collecting device according to claim 1, characterized in that: The mounting base is connected to a turntable, and a rotating portion of the turntable is connected to the connecting member to drive the connecting member to rotate.

7. The material collecting device according to any one of claims 1 to 6, characterized in that: It also includes a bracket, the bottom of which is installed on the mounting base, the top of which protrudes upward, and the shield overlaps the top of the bracket; the vertical distance between the discharge port and the receiving turntable is 0 to 15 mm.

8. The material collecting device according to claim 7, characterized in that: The support comprises two support rods, each of which comprises a horizontal section. The horizontal sections of the two support rods are arranged in parallel, and two opposite sides of the shield are overlapped on the horizontal sections under the action of gravity.

9. The material collecting device according to claim 7, characterized in that: The inner wall of the shield is provided with a Teflon layer; the shield is a metal structural part.

10. A melt indexer, characterized in that: It comprises a machine body and the material collecting device as described in any one of claims 1 to 9; the mounting base is connected to the machine body, the machine body has a material drop opening, and the feed opening is aligned with the material drop opening.

Images