Material conveying device

Abstract

The utility model provides a material conveying device. The material conveying device comprises a material box, a conveying belt, a spiral roller and a driving assembly. The material box is suitable for receiving materials, a bottom plate is arranged at the bottom of the material box, and a discharging port extending in the width direction is formed in one end of the bottom plate. The conveying belt is arranged below the discharging port of the material box and suitable for conveying materials conveyed through the discharging port. The spiral roller is movably installed in the material box in the width direction and suitable for conveying materials to a discharging port in the length direction. The driving assembly is suitable for driving the spiral roller to reciprocate in the material box in the width direction of the material box and conveying the materials in the material box to the discharging opening in the length direction at the same time, and the materials are prevented from being stacked in the material box.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial board processing, and more specifically, to a material conveying device. Background Art

[0002] Particleboard is a kind of man-made board made by cutting various branches, small-diameter wood, fast-growing wood, straw, etc. into sheets or blocks of certain specifications, drying them, mixing them with glue, hardener, waterproofing agent, etc., and pressing them under a certain temperature and pressure.

[0003] The flakes or blocks are stored in a silo as intermediate materials for producing particleboards, so that in subsequent processes, the intermediate materials in the silo are transported to a production line through a conveyor belt to prepare particleboards.

[0004] In the process of supplying the intermediate materials in the silo to the conveyor belt, since the size of the hopper near the discharge port of the silo is gradually reduced and the friction between the intermediate materials is large, the intermediate materials can easily fall in large quantities below the discharge port during the discharge process from the silo to form compacted solids, forming a "bridging phenomenon". Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a material conveying device, which can prevent the material from forming a bridge in the material box.

[0006] One aspect of the embodiment of the utility model provides a material conveying device, including a material box, a conveyor belt, a spiral roller and a drive assembly. The material box is suitable for receiving materials, the bottom of the material box is provided with a bottom plate, and one end of the bottom plate is provided with a discharge port extending in the width direction; the conveyor belt is arranged below the discharge port of the material box, and is suitable for conveying the material conveyed through the discharge port; the spiral roller is movably installed in the material box in the width direction, and is suitable for conveying the material to the discharge port in the length direction; the drive assembly is suitable for driving the spiral roller to reciprocate in the material box along the width direction of the material box, and at the same time conveying the material in the material box to the discharge port in the length direction, so as to avoid the accumulation of the material in the material box.

[0007] According to an embodiment of the utility model, a movable cavity parallel to the bottom surface of the material box is provided on the side wall in the width direction of the material box. The driving assembly includes a translation part and a rotary motor. The translation part is installed on the material box, and includes a translation motor and a translation unit. The translation unit is transmission-connected to the translation motor, and is suitable for reciprocating in the movable cavity under the drive of the translation motor to drive the spiral roller to translate in the material box. The rotary motor is installed on the translation unit and transmission-connected to the spiral roller, and is suitable for driving the spiral roller to rotate, and follows the movement of the translation unit to transport the material from the material box to the discharge port.

[0008] According to an embodiment of the utility model, the translation unit includes a lead screw and a moving block. The lead screw is installed near the moving cavity of the material box and extends in the width direction, and is suitable for rotating under the drive of the translation motor. The moving block is sleeved on the lead screw and is configured to translate along the axial direction of the lead screw under the rotation of the lead screw; wherein the rotating motor is installed on the moving block to follow the translation of the moving block in the width direction, and the end of the spiral roller passes through the moving block and is transmission-connected to the rotating motor.

[0009] According to an embodiment of the utility model, the driving assembly includes two translation units, which are respectively connected to the two ends of the spiral roller. The driving assembly also includes a transmission roller, which is transmission-connected between the two translation units and is suitable for synchronizing the movement of the two translation units.

[0010] According to an embodiment of the utility model, the driving assembly further comprises a transmission belt and a plurality of bevel gears. The plurality of bevel gears are meshingly connected to both ends of the transmission roller, and are adapted to transmit the power provided by the translation motor to the two lead screws through the transmission belt and the transmission roller, so that the two lead screws rotate synchronously.

[0011] According to an embodiment of the utility model, the material is wood chips formed by shaving wood.

[0012] According to an embodiment of the utility model, the material conveying device also includes a silo, which includes a funnel-shaped discharge port for storing the material; wherein the material box is arranged below the discharge port, and the spiral roller conveys the material from the discharge port to the discharge port to prevent the material from being deposited at the discharge port.

[0013] According to an embodiment of the utility model, the material conveying device also includes a tank chain connected between the rotating motor and the material box, which is suitable for preventing the cable from being entangled and broken during the translation of the rotating motor.

[0014] According to an embodiment of the utility model, the material conveying device further comprises a dustproof plate installed on the moving cavity and adapted to confine the dust in the material box within the material box.

[0015] According to an embodiment of the utility model, the material box also includes a slide rail, which is arranged on the side wall of the material box parallel to the movable cavity; wherein the rotating motor can be slidably installed on the slide rail to support part of the weight of the rotating motor through the slide rail.

[0016] According to the material conveying device of the embodiment of the utility model, a driving component is set to drive the spiral roller to reciprocate in the material box along the width direction of the material box, and at the same time, the material in the material box is conveyed to the discharge port in the length direction, so that the material is prevented from accumulating in the material box and the formation of "bridging phenomenon", so that the material can be continuously and smoothly conveyed from the material box to the conveyor belt, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0018] Figure 1 A perspective view schematically showing a material conveying device according to an embodiment of the utility model; and

[0019] Figure 2 The figure schematically shows a top view of a material conveying device according to an embodiment of the present utility model.

[0020] [Description of Reference Numerals]

[0021] 1-Material box;

[0022] 11-discharging port;

[0023] 12- bottom plate;

[0024] 2-Conveyor belt;

[0025] 3- spiral roller;

[0026] 31- roller shaft;

[0027] 32- spiral blade;

[0028] 4-Drive assembly;

[0029] 41- translation part;

[0030] 411-translation motor;

[0031] 412-translation unit;

[0032] 4121-screw;

[0033] 4122-Move Block;

[0034] 42-rotating motor;

[0035] 43-transmission roller;

[0036] 431-support block;

[0037] 44- transmission belt;

[0038] 45-bevel gear;

[0039] 5- Silo;

[0040] 51-feeding port; and

[0041] 52- Unloading space. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. However, the utility model can be implemented in different forms and should not be interpreted as being limited to the embodiments presented here. On the contrary, providing these embodiments will make the utility model thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, for clarity, the sizes and relative sizes of layers and regions may be exaggerated, and the same reference numerals represent the same elements throughout.

[0043] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0044] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0045] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0046] In order to facilitate those skilled in the art to understand the technical solution of the present utility model, the following technical terms are explained.

[0047] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0048] It should be noted that in order to facilitate those skilled in the art to better understand the technical solution of the present utility model, Figure 1 The proportions, directions and sizes of the various components are appropriately adjusted to increase the three-dimensional effect. For example, the width of the conveyor belt 2 is reduced to a certain extent as it extends in the transmission direction. This is only for visual effect and does not limit or change its size.

[0049] Figure 1 The figure schematically shows a perspective view of a material conveying device according to an embodiment of the utility model. Figure 2 The figure schematically shows a top view of a material conveying device according to an embodiment of the present utility model.

[0050] One aspect of the present invention provides a material conveying device, such as Figure 1 and Figure 2 As shown, it includes a material box 1, a conveyor belt 2, a spiral roller 3 and a drive assembly 4. The material box 1 is suitable for receiving materials. The bottom of the material box 1 is provided with a bottom plate 12, and one end of the bottom plate 12 is provided with a Figure 1 The conveyor belt 2 is arranged below the discharge port 11 of the material box 1 and is suitable for conveying the material conveyed through the discharge port 11. The spiral roller 3 is movably installed in the material box 1 in the width direction and is suitable for conveying the material to the discharge port 11 in the length direction. The driving component 4 is suitable for driving the spiral roller 3 to reciprocate in the width direction of the material box 1 and convey the material in the material box 1 to the discharge port 11 in the length direction to avoid the accumulation of the material in the material box 1.

[0051] According to the material conveying device of the embodiment of the utility model, a driving component 4 is set to drive the spiral roller 3 to reciprocate in the material box 1 along the width direction of the material box 1, and at the same time, the material in the material box 1 is conveyed to the discharge port 11 in the length direction, and the material in the material box 1 is conveyed to the discharge port 11, so that the accumulation of materials in the material box 1 and the formation of "bridging phenomenon" are avoided, so that the material can be continuously and smoothly conveyed from the material box 1 to the conveyor belt 2, thereby improving production efficiency.

[0052] According to the embodiments of the present utility model, Figure 1 As shown, the width direction is the direction indicated by the X-axis, the length direction is the direction indicated by the Y-axis, and the height direction is the direction indicated by the Z-axis.

[0053] According to an embodiment of the utility model, the material is a sheet-shaped or block-shaped small wood chip or wood block formed by shaving wood.

[0054] According to an embodiment of the utility model, the material conveying device further comprises a silo 5, which comprises a funnel-shaped discharge port 51 for storing materials. The material box 1 is arranged below the discharge port 51, and the spiral roller 3 conveys the materials from the discharge port 51 to the discharge port 11 to prevent the materials from being deposited at the discharge port 51.

[0055] According to the embodiments of the present utility model, Figure 1 As shown, a material discharge space 52 is set between the bottom of the silo 5 and the base of the silo 5, and the discharge port 11 is funnel-shaped and installed in the discharge space, with the large end connected to the silo 5 and the small end installed on the material box 1. Furthermore, the width of the discharge port 11 is consistent with the width and thickness of the material box 1, so that the material falls into the material box 1. The material box 1 is installed in the discharge space and along the length direction ( Figure 1 The transmission belt 44 extends outward in the direction indicated by the Y-axis in the middle of the material box 1, and is installed below the discharge port 51 of the material box 1 to receive and transmit the material from the discharge port 51.

[0056] According to the embodiment of the utility model, a plurality of discharge spaces can be sequentially arranged in the width direction between the bottom of the silo 5 and the silo foundation (for example, a building foundation or a support frame), and a discharge port 11 is installed in each discharge space, and a material box 1, a spiral roller 3 and a driving assembly 4 are correspondingly arranged below each discharge port 11, and a discharge port 51 of each material box 1 is arranged above the conveyor belt 2 to convey the material through the same conveyor belt 2. It can be understood that a corresponding conveyor belt 2 can be arranged at the discharge port 51 of each material box 1.

[0057] According to an embodiment of the utility model, the material conveying device further comprises a plurality of cover plates which are detachably mounted on the top of the box body to form a cover body of the box body. By providing a plurality of cover plates, on the one hand, materials are prevented from being removed from the top of the box body, and on the other hand, daily maintenance is also facilitated.

[0058] According to the embodiment of the present utility model, the transmission belt 44 can be an electronic belt scale to measure the total amount of conveyed materials.

[0059] According to an embodiment of the utility model, a moving cavity parallel to the bottom surface of the material box 1 is provided on the side wall in the width direction of the material box 1. The driving assembly 4 includes a translation part 41 and a rotating motor 42. The translation part 41 is installed on the material box 1, and includes a translation motor 411 and a translation unit 412. The translation unit 412 is transmission-connected with the translation motor 411, and is suitable for reciprocating in the moving cavity under the drive of the translation motor 411 to drive the spiral roller 3 to translate in the material box 1. The rotating motor 42 is installed on the translation unit 412 and is transmission-connected with the spiral roller 3, and is suitable for driving the spiral roller 3 to rotate, and follows the movement of the translation unit 412 to transport the material from the material box 1 to the discharge port 11.

[0060] According to an embodiment of the utility model, the translation unit 412 includes a lead screw 4121 and a moving block 4122. The lead screw 4121 is installed near the moving cavity of the material box 1 and extends in the width direction, and is suitable for rotating under the drive of the translation motor 411. The moving block 4122 is sleeved on the lead screw 4121 and is configured to translate along the axial direction of the lead screw 4121 under the rotation of the lead screw 4121; wherein the rotating motor 42 is installed on the moving block 4122 to follow the moving block 4122 to translate in the width direction, and the end of the spiral roller 3 passes through the moving block 4122 and is transmission-connected to the rotating motor 42.

[0061] According to an embodiment of the present utility model, the lead screw 4121 can be installed in the material box 1.

[0062] In another replaceable embodiment, the lead screw 4121 is installed outside the material box 1, the spiral roller 3 passes through the moving cavity and is installed on the moving block 4122, and the material conveying device also includes a dustproof plate installed on the moving cavity, which is suitable for limiting the dust in the material box 1 in the material box 1 to prevent the dust in the material box 1 from entering the lead screw 4121 and causing the lead screw 4121 to be blocked. Figure 1 As shown, a protective cover can be further provided on the periphery of the lead screw 4121, and the protective cover is installed on the material box 1. Furthermore, a sliding cavity parallel to the moving cavity is provided on the side wall of the protective cover, and the output end of the rotating motor 42 is rotatably installed on the moving block 4122 through the sliding cavity.

[0063] According to an embodiment of the present invention, the dustproof plate is made of a flexible wear-resistant material, such as a tetrafluoroethylene plate.

[0064] According to an embodiment of the utility model, a rotating bearing may be provided on the moving block 4122, and the roller shaft of the spiral roller 3 passes through the rotating bearing and is transmission-connected to the rotating motor 42, so that the spiral roller 3 can rotate while translating.

[0065] According to the embodiment of the utility model, two distance sensors can also be arranged on the side wall of the material box 1, so that when the spiral roller 3 moves close to the inner wall of the material box 1, the lead screw 4121 stops rotating and starts to move in the opposite direction. It can be understood that the moving speed of the moving block 4122 and the length of the moving cavity driven by the translation motor 411 can also be used to determine the current position of the spiral roller 3 in the width direction by the running time of the translation motor 411.

[0066] It is understandable that the above-mentioned logical judgments and operations only require simple logic circuits to be implemented, such as a single-chip microcomputer, a CPU, etc., and there is no need to design or develop corresponding software for them. Those skilled in the art can understand, implement and reproduce them after reading the above-mentioned technical solution, and no excessive elaboration is given here.

[0067] According to the embodiments of the present utility model, Figure 2 As shown, the driving assembly 4 includes two translation units 412, which are respectively connected to the two ends of the spiral roller 3. The driving assembly 4 also includes a transmission roller 43, which is transmission-connected between the two translation units 412 and is suitable for synchronizing the movement of the two translation units 412.

[0068] According to an embodiment of the present invention, a plurality of support blocks 431 are arranged at intervals in the axial direction of the transmission roller 43 to prevent the transmission roller 43 from bending in the axial direction.

[0069] In an illustrative embodiment, the number of the support blocks 431 may include any one of 1, 3, 5, 6, 8, etc.

[0070] According to an embodiment of the utility model, the driving assembly 4 further includes a transmission belt 44 and a plurality of bevel gears 45. The plurality of bevel gears 45 are meshedly connected to both ends of the transmission roller 43, and are adapted to transmit the power provided by the translation motor 411 to the two lead screws 4121 through the transmission belt 44 and the transmission roller 43, so that the two lead screws rotate synchronously, so as to ensure that the axis of the spiral roller is always perpendicular to the width direction.

[0071] In an exemplary embodiment, the plurality of bevel gears 45 are 45° bevel gears 45 .

[0072] In an illustrative embodiment, three 45° bevel gears 45 are meshed to form a first transmission unit, and the three connecting ends of the three bevel gears 45 respectively form the first input end and two first output ends of the first transmission unit, and the translation motor 411 drives the first input end through the transmission belt 44, and the two first output ends are respectively connected to one end of the transmission roller 43 and one of the lead screws 4121, so as to transmit the power transmitted by the belt to the transmission roller 43 and one of the lead screws 4121. Two 45° bevel gears 45 are meshed to form a second transmission unit, and the two connecting ends of the two bevel gears 45 respectively form the second input end and the second output end of the second transmission unit, and the second input end is connected to the other end of the transmission roller 43, and the second output end is connected to another lead screw 4121, so as to transmit the power transmitted by the transmission roller 43 to another lead screw 4121, so as to make the two lead screws 4121 rotate synchronously. It can be understood that the sizes of the bevel gears 45 of the first transmission unit and the second transmission unit can be the same or partially the same, so as to make the two lead screws 4121 rotate synchronously.

[0073] In some exemplary embodiments, a multi-directional reducer may be used to replace the multiple bevel gears 45. For example, a three-directional reducer may be used as the first transmission unit, and a right-angle reducer may be used as the second transmission unit.

[0074] According to an embodiment of the utility model, the material conveying device further comprises a tank chain, which is connected between the rotating motor and the material box 1 and is suitable for preventing the cable from being entangled and broken during the translation of the rotating motor 42 .

[0075] According to the embodiment of the utility model, the tank chain, also known as a drag chain, is a wire and cable protection drag chain (Cablecarrier), a device used to restrain cables or wires to facilitate their rotation and movement. The tank chain is composed of a large number of unit links, and the links can rotate freely.

[0076] According to an embodiment of the utility model, the material box 1 further comprises a slide rail, which is arranged on the side wall of the material box 1 in parallel with the moving cavity. The rotating motor 42 is slidably mounted on the slide rail to support part of the weight of the rotating motor 42 through the slide rail.

[0077] In an illustrative embodiment, a slide rail may be disposed below the moving cavity, and a sliding block is mounted on the rotating motor 42 for supporting the rotating motor 42 and cooperating with the slide rail.

[0078] According to an embodiment of the utility model, a spirally wound spiral blade is arranged on the roller shaft of the spiral roller 3, and the angle between the spiral blade and the axis of the roller shaft can be an acute angle.

[0079] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of various elements and methods are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0080] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the present invention, and the shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention.

[0081] Unless otherwise indicated, the numerical parameters in this specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained by the content of the utility model. Specifically, all numbers used in the specification and claims to express the content of the composition, reaction conditions, etc. should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression is to include changes in some embodiments of ±10%, in some embodiments of ±5%, in some embodiments of ±1%, and in some embodiments of ±0.5% by a specific number.

[0082] The ordinal numbers used in the specification and claims, such as "first", "second", "third", etc., to modify the corresponding elements, do not themselves mean that the elements have any ordinal numbers, nor do they represent the order of one element and another element, or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0083] In addition, unless the steps are specifically described or must occur in sequence, the order of the above steps is not limited to the above list, and can be changed or rearranged according to the required design. And the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0084] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material conveying device, characterized in that: include: A material box, suitable for receiving materials, wherein a bottom plate is provided at the bottom of the material box, and a discharge port extending in a width direction is provided at one end of the bottom plate; A conveyor belt, arranged below the discharge port of the material box, suitable for conveying the material conveyed through the discharge port; A spiral roller is movably installed in the material box in the width direction and is suitable for conveying the material to the discharge port in the length direction; as well as The driving assembly is suitable for driving the spiral roller to reciprocate in the material box along the width direction of the material box while conveying the material in the material box to the discharge port in the length direction to avoid the material from piling up in the material box.

2. The material conveying device according to claim 1, characterized in that: A moving cavity parallel to the bottom surface of the material box is provided on the side wall in the width direction of the material box; The drive assembly comprises: The translation part is installed on the material box and includes: Translation motor; and A translation unit, drivingly connected to the translation motor, adapted to reciprocate in the moving cavity under the drive of the translation motor, so as to drive the spiral roller to translate in the material box; and The rotating motor is installed on the translation unit and is transmission-connected with the spiral roller. The rotating motor is suitable for driving the spiral roller to rotate and follow the movement of the translation unit to transport the material from the material box to the discharge port.

3. The material conveying device according to claim 2, characterized in that: The translation unit comprises: a lead screw, mounted near the moving cavity of the material box and extending in the width direction, adapted to rotate under the drive of the translation motor; and A moving block, sleeved on the lead screw, and configured to translate along the axis direction of the lead screw under the rotation of the lead screw; The rotating motor is installed on the moving block to follow the moving block to translate in the width direction, and the end of the spiral roller passes through the moving block and is transmission-connected to the rotating motor.

4. The material conveying device according to claim 3, characterized in that: The driving assembly includes two translation units, which are respectively connected to two ends of the spiral roller, and the driving assembly also includes: The transmission roller is transmission-connected between the two translation units and is suitable for synchronizing the movement of the two translation units.

5. The material conveying device according to claim 4, characterized in that: The drive assembly also includes: Drive belts; and A plurality of bevel gears are meshedly connected to the two ends of the transmission roller and are suitable for transmitting the power provided by the translation motor to the two lead screws through the transmission belt, so that the two lead screws rotate synchronously.

6. The material conveying device according to claim 1, characterized in that: The material is wood chips formed by shaving wood.

7. The material conveying device according to claim 6, characterized in that: Also includes: A silo, including a funnel-shaped discharge port, for storing the material; Wherein, the material box is arranged below the material discharge port, and the spiral roller transports the material from the material discharge port to the material discharge port to prevent the material from being deposited at the material discharge port.

8. The material conveying device according to claim 2, characterized in that: Also includes: The tank chain is connected between the rotating motor and the material box, and is suitable for preventing the cable from being entangled and broken during the translation of the rotating motor.

9. The material conveying device according to claim 2, characterized in that: Also includes: A dustproof plate is installed on the moving cavity and is suitable for confining dust in the material box within the material box.

10. The material conveying device according to claim 9, characterized in that: The feed box also includes: A slide rail, arranged on a side wall of the material box in parallel with the moving cavity; Wherein, the rotating motor is slidably mounted on the slide rail so as to support part of the weight of the rotating motor through the slide rail.

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