Hopper and cloth spreading machine including the same

Abstract

This invention provides a hopper and a fabric spreading machine including the hopper. The hopper comprises a first base and a second base positioned opposite each other on the worktable of the fabric spreading machine. The hopper body is suspended on the worktable via the first and second bases. The hopper body has an openable bottom plate structure, on which a weighing area for acquiring the weight information of the fabric roll is provided. The fabric spreading machine controller determines whether feeding is required based on the fabric roll weight information. If so, it outputs a feeding control command when the fabric roll does not have a core, and outputs a bottom plate opening / closing control command and a feeding control command when the fabric roll has a core. The feeding mechanism feeds the next fabric roll into the hopper body according to the feeding control command. The fabric spreading machine includes a worktable, a controller, and the aforementioned hopper. According to this invention, mechanized feeding of the fabric spreading machine and timely automated replenishment in case of material shortage can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of fabric spreading machine feeding, and more specifically, relates to a hopper and a fabric spreading machine including the hopper. Background Technology

[0002] In related technologies, one type of fabric spreading machine uses a linear reciprocating spreading method to lay the fabric from a fabric roll on its worktable in a layered and stacked manner for the next cutting process. Specifically, this type of fabric spreading machine also includes a hopper, a fabric conveying mechanism, and a fabric pressing mechanism that can move linearly on the worktable simultaneously. The hopper is used to hold the fabric roll, and the fabric in the fabric roll in the hopper is laid flat after being conveyed by the fabric conveying mechanism and pressed by the fabric pressing mechanism. However, the above-mentioned fabric spreading machine has the following two main problems in use:

[0003] First, when feeding materials, the fabric rolls need to be placed into the hopper manually. On the one hand, the hopper is set on the workbench and has a certain height, and the feeding port of the hopper is relatively high. On the other hand, the fabric rolls are usually quite heavy. Based on these two factors, the above-mentioned manual feeding method is not only time-consuming and labor-intensive, but also prone to safety hazards.

[0004] Second, if no one is on duty during the fabric laying operation, the fabric roll cannot be replenished to the hopper in time after the fabric roll is unwound, which will cause the fabric laying machine to run in an unloaded state. This will not only affect the overall progress of the fabric laying operation, but also shorten the service life of the fabric laying machine. Summary of the Invention

[0005] In view of this, the present invention provides a hopper and a fabric spreading machine including the hopper.

[0006] According to a first aspect of the invention, a hopper is provided for use in a fabric spreading machine, the fabric spreading machine including a worktable and a controller;

[0007] The hopper includes:

[0008] The first base and the second base are arranged opposite to each other on the worktable;

[0009] The hopper body is suspended on the workbench via the first base and the second base. The hopper body has an openable and closable bottom plate structure. A weighing area for acquiring the weight information of the fabric roll is provided on the bottom plate structure. The controller is used to determine whether feeding is required based on the acquired weight information. If so, it outputs a feeding control command when the fabric roll does not have a shaft core. When the fabric roll has a shaft core, it outputs a bottom plate opening and closing control command and a feeding control command to open and close the bottom plate structure once.

[0010] The feeding mechanism is used to feed the next roll of fabric into the hopper body according to the feeding control command.

[0011] Optionally, the hopper body also has:

[0012] The first end plate and the second end plate are opposite to each other, with the first end plate erected on the first base and the second end plate erected on the second base;

[0013] The first side fence and the second side fence are respectively, each of which includes at least two railings that are horizontally set and at different heights through the first end plate and the second end plate.

[0014] Optionally, the base plate structure includes:

[0015] The first support rod and the second support rod are both fixed between the first end plate and the second end plate or both fixed between the first base and the second base. Both are parallel to either railing and are respectively close to the lowest railing in the first side railing and the lowest railing in the second side railing.

[0016] A first sub-base plate and a second sub-base plate, the first sub-base plate being arranged along and hinged to the first support rod, and the second sub-base plate being arranged along and hinged to the second support rod. When the base plate structure is in a closed state, the first sub-base plate and the second sub-base plate form a downwardly extending V-shaped base plate, and the weighing area is located in the inner angle area of ​​the V-shaped base plate.

[0017] Optionally, a continuous first round rod is provided on the side of the first sub-base plate away from the first support rod, and a continuous second round rod is provided on the side of the second sub-base plate away from the second support rod.

[0018] At least one first pressure sensor is provided on the first round rod, and at least one second pressure sensor is provided on the second round rod. The at least one first pressure sensor and the at least one second pressure sensor together define the weighing area.

[0019] Optionally, the hopper further includes:

[0020] First opening and closing execution mechanism and second opening and closing execution mechanism;

[0021] The first opening and closing actuator includes a first connecting rod and a first telescopic rod. The lower side of the first support rod is connected to the fixed end of the first telescopic rod through the vertically arranged first connecting rod. The movable end of the first telescopic rod is hinged to the outer bottom surface of the first sub-base plate.

[0022] The second opening and closing actuator includes a second connecting rod and a second telescopic rod. The lower side of the second support rod is connected to the fixed end of the second telescopic rod through a vertically arranged second connecting rod. The movable end of the second telescopic rod is hinged to the outer bottom surface of the second sub-base plate.

[0023] Both the first telescopic rod and the second telescopic rod are controlled by the controller.

[0024] Optionally, the hopper further includes:

[0025] A shaft core collecting groove, the first end of which is connected to the first base, and the second end of which is connected to the second base, wherein the opening of the bottom plate structure in the open state is located above the groove opening of the shaft core collecting groove.

[0026] Optionally, a shaft core outlet communicating with the shaft core collection groove may be provided on the first base and / or the second base.

[0027] Optionally, the feeding mechanism includes a first robotic arm and a second robotic arm with identical structures;

[0028] The first robotic arm includes a robotic arm having at least one robotic arm joint and an end effector disposed on the free end of the robotic arm, wherein both the robotic arm joint and the end effector are controlled by the controller;

[0029] The fixed end of the robotic arm in the first robotic arm and the fixed end of the robotic arm in the second robotic arm are respectively disposed on the first end plate and the second end plate.

[0030] According to a second aspect of the present invention, a fabric spreading machine is provided, the fabric spreading machine comprising a worktable, a controller, and any of the aforementioned hoppers.

[0031] Optionally, the first base and the second base are configured to slide on the worktable;

[0032] The fabric spreading machine also includes a fabric conveying mechanism and a fabric pressing mechanism that are sequentially distributed downstream of the hopper;

[0033] The fabric conveying mechanism includes:

[0034] The third base and the fourth base are disposed opposite to each other on the worktable and are configured to slide on the worktable;

[0035] The fabric conveying roller assembly is suspended on the worktable via the third base and the fourth base;

[0036] The fabric pressing mechanism includes:

[0037] The fifth base and the sixth base are disposed opposite to each other on the worktable and are configured to slide on the worktable;

[0038] The pressing rod, whose two ends are connected to the fifth base and the sixth base respectively, is used to press the fabric flowing through it.

[0039] The beneficial effects of this invention are as follows:

[0040] The hopper of this invention includes a first base, a second base, a hopper body, and a feeding mechanism. Specifically, the first base and the second base are disposed opposite to each other on the worktable of the fabric spreading machine; the hopper body is suspended on the worktable of the fabric spreading machine via the first base and the second base, and the hopper body has an openable bottom plate structure. A weighing area for acquiring the weight information of the fabric roll is provided on the bottom plate structure. The controller of the fabric spreading machine determines whether feeding is required based on the acquired weight information of the fabric roll. If feeding is required, a feeding control command is output when the fabric roll does not have a shaft core, and a bottom plate opening / closing control command and a feeding control command are output sequentially when the fabric roll has a shaft core; the feeding mechanism is used to feed the next fabric roll into the hopper body according to the feeding control command.

[0041] For a fabric spreading machine using the hopper of the present invention, its controller pre-obtains information on whether the fabric roll has a core and the weight information of the core when the fabric roll has a core. During the operation of the fabric spreading machine, the controller obtains the weight information of the fabric roll in real time through the weighing area on the bottom plate structure. If the fabric roll does not have a core, a feeding control command is output when the weight of the fabric roll is 0 or close to 0, so as to control the feeding mechanism to feed the next fabric roll into the hopper body. If the fabric roll has a core, when the weight of the fabric roll is equal to the weight of the core or is about to be reduced to the weight of the core, a bottom plate opening and closing control command and a feeding control command are output. The bottom plate structure of the hopper body opens and closes once according to the received bottom plate opening and closing control command, so that the core flows out of the hopper body and returns to its closed state. The feeding mechanism feeds the hopper body according to the received feeding control command.

[0042] As can be seen from the above, on the one hand, the hopper of the present invention, equipped with a feeding mechanism, can achieve mechanized feeding under the control of the fabric spreading machine controller. Compared with the manual feeding method in related technologies, the mechanized feeding method not only saves labor and time costs, but also has higher safety, which is conducive to safe production. On the other hand, the hopper of the present invention has a weighing area, and the fabric spreading machine controller can obtain the fabric roll weight information in real time based on the weighing area, and then realize automatic material replenishment after the unwinding is completed based on the feeding mechanism. This effectively solves the problem in related technologies where the fabric spreading machine cannot automatically replenish material in time after the unwinding is completed, which affects the operation progress and equipment service life.

[0043] The fabric spreading machine of the present invention and the aforementioned hopper belong to the same general inventive concept and have at least the same beneficial effects as the aforementioned hopper, which will not be elaborated here.

[0044] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0045] The present invention can be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to denote the same or similar parts.

[0046] Figure 1 A schematic diagram of the hopper structure according to an embodiment of the present invention is shown;

[0047] Figure 2 A schematic diagram showing the hinged connection between the first sub-base plate and the first support rod according to an embodiment of the present invention is shown;

[0048] Figure 3 A schematic diagram of the layout of the weighing area on the V-shaped base plate according to an embodiment of the present invention is shown;

[0049] Figure 4 A schematic diagram showing the relative positional relationship between the core collecting groove and the first and second bases according to an embodiment of the present invention is provided.

[0050] Figure 5 A schematic diagram of a fabric spreading machine according to an embodiment of the present invention is shown. Detailed Implementation

[0051] To enable those skilled in the art to more fully understand the technical solutions of the present invention, exemplary embodiments of the present invention will be described more comprehensively and in detail below with reference to the accompanying drawings. Obviously, the one or more embodiments of the present invention described below are merely one or more specific ways to implement the technical solutions of the present invention, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solutions of the present invention, and should not be limited to the embodiments described exemplary. Based on one or more embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0052] Example: Figure 1 A schematic diagram of the hopper structure according to an embodiment of the present invention is shown, wherein the first opening and closing actuator, the second opening and closing actuator, and the parts of the bottom plate structure other than the first support rod and the second support rod are not shown; Figure 2A schematic diagram showing the hinged connection between the first sub-base plate and the first support rod according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the layout of the weighing area on the V-shaped base plate according to an embodiment of the present invention is shown; Figure 4 A schematic diagram showing the relative positional relationship between the core collecting groove and the first and second bases according to an embodiment of the present invention is provided.

[0053] Reference Figures 1-4 The hopper of this invention is applied to a fabric spreading machine, which includes a worktable and a controller;

[0054] The hopper in this embodiment of the invention includes:

[0055] The first base 100 and the second base 200 are arranged opposite to each other on the worktable;

[0056] The hopper body 300 is mounted on the workbench via a first base 100 and a second base 200. The hopper body 300 has an openable bottom plate structure 310. A weighing area for acquiring the weight information of the fabric roll is provided on the bottom plate structure 310. The controller is used to determine whether feeding is required based on the acquired weight information of the fabric roll. If so, it outputs a feeding control command when the fabric roll does not have a shaft core, and outputs a bottom plate opening and closing control command and a feeding control command when the fabric roll has a shaft core.

[0057] The feeding mechanism 400 is used to feed the next roll of fabric into the hopper body 300 according to the feeding control command.

[0058] Specifically, in this embodiment of the invention, the controller determines the remaining amount of the fabric roll based on the fabric roll weight information. When the fabric roll in the hopper body 300 is a fabric roll without a core, the controller of the spreading machine can output a feeding control command when the fabric roll weight is 0, or when the fabric roll weight is close to 0, i.e., when the fabric roll weight is M. The value of M is set manually. This setting is to minimize the time interval between the completion of unwinding the current fabric roll and the completion of feeding the next fabric roll, based on the premise that there is only one fabric roll in the hopper body 300. When the fabric roll in the hopper body 300 is a fabric roll with a core, the controller of the spreading machine can output a bottom plate opening and closing control command and a feeding control command when the fabric roll weight is equal to the core weight, or when the fabric roll weight is about to decrease to the core weight, i.e., when the difference between the fabric roll weight and the core weight is N, the controller outputs a bottom plate opening and closing control command and a feeding control command. The value of N in the plate opening / closing control command and the feeding control command is set manually. This setting is to minimize the time interval between the completion of unwinding the current fabric roll and the completion of feeding the next fabric roll, assuming there is only one fabric roll in the hopper body 300. In addition, the output times of the plate opening / closing control command and the feeding control command can be the same. This is because the time it takes for the plate structure 310 to open and close once is less than the time it takes for the feeding mechanism 400 to perform one feeding task. In practical applications, the output interval of the plate opening / closing control command and the feeding control command can be reasonably determined based on the time it takes for the plate structure 310 to open and close once and the time it takes for the feeding mechanism 400 to perform one feeding task, as long as the plate structure 310 has completed one opening / closing when the feeding mechanism 400 is about to perform the feeding action.

[0059] Furthermore, in this embodiment of the invention, the hopper body 300 also has:

[0060] The first end plate 320 and the second end plate 330 are respectively erected on the first base 100 and the second end plate 330 is erected on the second base 200.

[0061] The first side fence 340 and the second side fence 350 are respectively, each including three railings that are horizontally set at different heights by means of the first end plate 320 and the second end plate 330.

[0062] Specifically, in this embodiment of the invention, the hopper body 300 is an inverted trapezoidal structure, with the top of the inverted trapezoidal structure open to form a feeding port. The first end plate 320 and the second end plate 330 correspond to the two end faces of the inverted trapezoidal structure, respectively. The first side railing 340 and the second side railing 350 correspond to the two sides of the inverted trapezoidal structure, respectively. The bottom plate structure 310 corresponds to the bottom surface of the inverted trapezoidal structure located at the bottom.

[0063] Specifically, in this embodiment of the invention, both the first side fence 340 and the second side fence 350 are composed of multiple railings, which are elongated cylindrical bars. This arrangement reduces the friction between the railings and the fabric roll. Simultaneously, the fabric in the fabric roll flows out of the hopper body 300 after passing over at least one railing in the second side fence 350.

[0064] Furthermore, in this embodiment of the invention, the base plate structure 310 includes:

[0065] The first support rod 311 and the second support rod 312 are both fixed between the first base 100 and the second base 200. Both are parallel to any railing and are respectively close to the lowest railing in the first side railing 340 and the lowest railing in the second side railing 350.

[0066] The first sub-base plate 313 and the second sub-base plate 314 are arranged along and hinged to the first support rod 311, and the second sub-base plate 314 is arranged along and hinged to the second support rod 312. When the base plate structure 310 is in a closed state, the first sub-base plate 313 and the second sub-base plate 314 form a downwardly extending V-shaped base plate, and the weighing area is set in the inner angle area of ​​the V-shaped base plate.

[0067] Specifically, in this embodiment of the invention, the first end of the first support rod 311 is fixed at one upper end point of the inner side surface of the first base 100, the second end of the first support rod 311 is fixed at one upper end point of the inner side surface of the second base 200, the first end of the second support rod 312 is fixed at another upper end point of the inner side surface of the first base 100, and the second end of the second support rod 312 is fixed at another upper end point of the inner side surface of the second base 200. The first support rod 311 and the second support rod 312 are in the same horizontal plane.

[0068] Specifically, in this embodiment of the invention, the first support rod 311 is hinged to the first sub-base plate 313 via two hinge shafts disposed thereon, and the second support rod 312 is similarly hinged to the second sub-base plate 314 via two hinge shafts disposed thereon.

[0069] Furthermore, in this embodiment of the invention, a continuous first round rod 315 is provided on the side of the first sub-base plate 313 away from the first support rod 311, and a continuous second round rod 316 is provided on the side of the second sub-base plate 314 away from the second support rod 312.

[0070] A first pressure sensor 317 is provided on the first round rod 315, and a second pressure sensor 318 is provided on the second round rod 316. The first pressure sensor 317 and the second pressure sensor 318 together define the weighing area.

[0071] Specifically, in this embodiment of the invention, the V-shaped base plate formed by the first sub-base plate 313, the first round rod 315, the second round rod 316, and the second sub-base plate 314 has an included angle greater than 90 degrees and a wavy bottom. The first round rod 315 and the second round rod 316 correspondingly form a wavy structure to reduce the friction between themselves and the fabric roll. The first pressure sensor 317 and the second pressure sensor 318 are both implemented using patch-type pressure sensors. The first pressure sensor 317 is located in the middle of the first round rod 315 and faces upward, and the second pressure sensor 318 is located in the middle of the second round rod 316 and faces upward. The first pressure sensor 317 and the second pressure sensor 318 are arranged opposite to each other. The area jointly defined by the first pressure sensor 317 and the second pressure sensor 318 is the weighing area. The controller of the fabric spreading machine obtains the weight information of the fabric roll based on the pressure data output by the first pressure sensor 317 and the second pressure sensor 318. In practical applications, the number of first pressure sensors and second pressure sensors can be appropriately increased. That is, multiple first pressure sensors are set on the first circular rod 315, and multiple second pressure sensors are set on the second circular rod 316. The multiple first pressure sensors are equally spaced on the first circular rod 315, and the multiple second pressure sensors are equally spaced on the second circular rod 316. Each first pressure sensor has a corresponding second pressure sensor.

[0072] Specifically, in this embodiment of the invention, the number of the first round rod 315 and the second round rod 316 is not limited to one. For example, a first round rod can be horizontally arranged outside the first round rod 315, and a second round rod can be horizontally arranged outside the second round rod 316. Correspondingly, the width of the first sub-base plate 313 and the second sub-base plate 314 needs to be reduced. This arrangement increases the width of the wavy area of ​​the V-shaped base plate. Based on this, pressure sensors can be correspondingly arranged on the added first and second round rods to obtain a wider weighing area, thereby improving the weighing accuracy.

[0073] Furthermore, the hopper in this embodiment of the invention also includes a first opening and closing actuator and a second opening and closing actuator 500;

[0074] The first opening and closing actuator includes a first connecting rod and a first telescopic rod. The lower side of the first support rod 311 is connected to the fixed end of the first telescopic rod through the vertically arranged first connecting rod. The movable end of the first telescopic rod is hinged to the outer bottom surface of the first sub-base plate 313.

[0075] The second opening and closing actuator 500 includes a second connecting rod 510 and a second telescopic rod 520. The lower side of the second support rod 312 is connected to the fixed end of the second telescopic rod 520 through the vertically arranged second connecting rod 510. The movable end of the second telescopic rod 520 is hinged to the outer bottom surface of the second sub-base plate 314.

[0076] Both the first telescopic rod and the second telescopic rod 520 are controlled by the controller.

[0077] Furthermore, the hopper in this embodiment of the invention also includes:

[0078] The shaft core collecting groove 600 has a first end connected to the first base 100 and a second end connected to the second base 200. The opening of the base plate structure 310, which is in the open state, is located above the groove opening of the shaft core collecting groove 600.

[0079] Furthermore, in this embodiment of the invention, the first base 100 is provided with a shaft core outlet 110 that communicates with the shaft core collection groove 600.

[0080] Specifically, in this embodiment of the invention, in response to the base plate opening and closing control command output by the controller, both the first telescopic rod and the second telescopic rod 520 change from an extended state to a retracted state, thereby driving the first sub-base plate 313 and the second sub-base plate 314 to rotate accordingly, and thus causing the base plate structure 310 to change from a closed state to an open state. When the base plate structure 310 is open, the shaft core falls into the shaft core collection groove 600 through the opening of the base plate structure 310. Next, both the first telescopic rod and the second telescopic rod 520 change from a retracted state to an extended state, thereby driving the first sub-base plate 313 and the second sub-base plate 314 to rotate accordingly, and thus causing the base plate structure 310 to change from an open state to a closed state, waiting for feeding. The shaft core can be taken out from the shaft core collection groove 600 through the shaft core take-out outlet 110. In this embodiment of the invention, only the shaft core take-out outlet is provided on the first base 100. Optionally, another shaft core take-out outlet can also be provided on the second base 200.

[0081] Furthermore, in this embodiment of the invention, the feeding mechanism 400 includes a first robotic arm 410 and a second robotic arm with identical structures;

[0082] The first robotic arm 410 includes a robotic arm 412 with a robotic arm joint 411 and an end effector disposed on the free end of the robotic arm 412. Both the robotic arm joint 411 and the end effector are controlled by a controller.

[0083] The fixed end of the robotic arm 412 in the first robotic arm 410 and the fixed end of the robotic arm in the second robotic arm are respectively disposed on the first end plate 320 and the second end plate 330.

[0084] Specifically, in this embodiment of the invention, the end effector is implemented using a mechanical claw structure, which includes a first gripping part 413 and a second gripping part. Both the first gripping part 413 and the second gripping part are movably mounted on the end of the robotic arm 412 via a mechanical claw pivot 414. The robotic arm joint 411 is also implemented using a pivot structure. Both the mechanical claw pivot 414 and the robotic arm joint 411 are implemented using electric pivots controlled by a controller. When the controller of the fabric spreading machine outputs a feeding control command, the first robotic arm 410 and the second robotic arm cooperate to grab the next roll of fabric and place it into the hopper body 300.

[0085] Accordingly, based on the hopper proposed in the embodiments of the present invention, the embodiments of the present invention also propose a fabric spreading machine.

[0086] Figure 5 A schematic diagram of the fabric spreading machine according to an embodiment of the present invention is shown. (Refer to...) Figure 5 The fabric spreading machine of this invention includes a worktable 700, a controller, the aforementioned hopper, and a fabric conveying mechanism 800 and a fabric pressing mechanism 900 sequentially distributed downstream of the hopper.

[0087] The first base 100 and the second base 200 are configured to slide on the worktable 700;

[0088] The fabric conveying mechanism 800 includes:

[0089] The third base 810 and the fourth base 820 are disposed opposite to each other on the worktable 700 and are configured to slide on the worktable 700;

[0090] The fabric conveying roller assembly 830 is mounted on the worktable 700 via the third base 810 and the fourth base 820;

[0091] The fabric pressing mechanism 900 includes:

[0092] The fifth base 910 and the sixth base 920 are disposed opposite to each other on the worktable 700 and are configured to slide on the worktable 700;

[0093] The pressing rod 930 is connected at both ends to the fifth base 910 and the sixth base 920 respectively, and is used to press the fabric flowing through it.

[0094] Specifically, in this embodiment of the invention, the third base 810 is simultaneously fixedly connected to the first base 100 and the fifth base 910, and the fourth base 820 is simultaneously fixedly connected to the second base 200 and the sixth base 920. With this configuration, the hopper, the fabric conveying mechanism 800, and the fabric pressing mechanism 900 can slide linearly back and forth along the length of the worktable 700 as a whole structure. Furthermore, during the linear back and forth sliding of the hopper, the fabric conveying mechanism 800, and the fabric pressing mechanism 900 as a whole structure along the length of the worktable 700, the fabric conveying roller assembly 830 and the fabric pressing rod 930 perform corresponding operations to lay the fabric in the fabric roll on the worktable 700 in a flat and stacked manner.

[0095] While one or more embodiments of the present invention have been described above, those skilled in the art will recognize that the present invention can be implemented in any other form without departing from its spirit and scope. Therefore, the embodiments described above are illustrative and not restrictive, and many modifications and substitutions will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A hopper for use in a fabric spreading machine, the fabric spreading machine comprising a worktable and a controller, characterized in that, The hopper includes: The first base and the second base are arranged opposite to each other on the worktable; The hopper body is suspended on the workbench via a first base and a second base. The hopper body has an openable bottom plate structure with a weighing area for acquiring the weight information of fabric rolls. The controller pre-acquires information on whether the fabric roll has a core and the weight of the core when it does. The controller determines whether feeding is required based on the acquired weight information. If the fabric roll does not have a core, a feeding control command is output when the fabric roll weight is 0 or close to 0, controlling the feeding mechanism to feed the next fabric roll into the hopper body. If the fabric roll has a core, a bottom plate opening / closing control command and a feeding control command are output when the fabric roll weight equals or is about to decrease to the core weight. The bottom plate structure of the hopper body opens and closes once according to the received bottom plate opening / closing control command, allowing the core to flow out of the hopper body and returning to its closed state. The feeding mechanism feeds the hopper body according to the received feeding control command. A feeding mechanism is used to feed the next roll of fabric into the hopper body according to the feeding control command; The hopper body also has: The first end plate and the second end plate are opposite to each other, with the first end plate erected on the first base and the second end plate erected on the second base; The first side fence and the second side fence are opposite to each other. The first side fence and the second side fence each include at least two railings that are horizontally set and at different heights through the first end plate and the second end plate. The base plate structure includes: The first support rod and the second support rod are both fixed between the first end plate and the second end plate or both fixed between the first base and the second base. Both are parallel to either railing and are respectively close to the lowest railing in the first side railing and the lowest railing in the second side railing. A first sub-base plate and a second sub-base plate, the first sub-base plate being arranged along and hinged to the first support rod, and the second sub-base plate being arranged along and hinged to the second support rod. When the base plate structure is in a closed state, the first sub-base plate and the second sub-base plate form a downwardly extending V-shaped base plate, and the weighing area is located in the inner angle area of ​​the V-shaped base plate.

2. The hopper according to claim 1, characterized in that, A continuous first round rod is provided on the side of the first sub-base plate away from the first support rod, and a continuous second round rod is provided on the side of the second sub-base plate away from the second support rod. At least one first pressure sensor is provided on the first round rod, and at least one second pressure sensor is provided on the second round rod. The at least one first pressure sensor and the at least one second pressure sensor together define the weighing area.

3. The hopper according to claim 1, characterized in that, It also includes a first opening and closing actuator and a second opening and closing actuator; The first opening and closing actuator includes a first connecting rod and a first telescopic rod. The lower side of the first support rod is connected to the fixed end of the first telescopic rod through the vertically arranged first connecting rod. The movable end of the first telescopic rod is hinged to the outer bottom surface of the first sub-base plate. The second opening and closing actuator includes a second connecting rod and a second telescopic rod. The lower side of the second support rod is connected to the fixed end of the second telescopic rod through a vertically arranged second connecting rod. The movable end of the second telescopic rod is hinged to the outer bottom surface of the second sub-base plate. Both the first telescopic rod and the second telescopic rod are controlled by the controller.

4. The hopper according to claim 1, characterized in that, Also includes: A shaft core collecting groove, the first end of which is connected to the first base, and the second end of which is connected to the second base, wherein the opening of the bottom plate structure in the open state is located above the groove opening of the shaft core collecting groove.

5. The hopper according to claim 4, characterized in that, A shaft core outlet is provided on the first base and / or the second base, which is connected to the shaft core collection groove.

6. The hopper according to any one of claims 1-5, characterized in that, The feeding mechanism includes a first robotic arm and a second robotic arm with identical structures; The first robotic arm includes a robotic arm having at least one robotic arm joint and an end effector disposed on the free end of the robotic arm, wherein both the robotic arm joint and the end effector are controlled by the controller; The fixed end of the robotic arm in the first robotic arm and the fixed end of the robotic arm in the second robotic arm are respectively disposed on the first end plate and the second end plate.

7. A fabric spreading machine, comprising a worktable and a controller, characterized in that, It also includes the hopper as described in any one of claims 1-6.

8. The fabric spreading machine according to claim 7, characterized in that, The first base and the second base are configured to slide on the worktable; The fabric spreading machine also includes a fabric conveying mechanism and a fabric pressing mechanism that are sequentially distributed downstream of the hopper; The fabric conveying mechanism includes: The third base and the fourth base are disposed opposite to each other on the worktable and are configured to slide on the worktable; The fabric conveying roller assembly is suspended on the worktable via the third base and the fourth base; The fabric pressing mechanism includes: The fifth base and the sixth base are disposed opposite to each other on the worktable and are configured to slide on the worktable; The pressing rod, whose two ends are connected to the fifth base and the sixth base respectively, is used to press the fabric flowing through it.

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